Posted by: adventuresofgreg | June 27, 2008

Lousy day

Why is it that when ever I make some solid plans, things just get all messed up?

I created a draft for a press release for the 24 hour record attempt – It is still a work in progress, but you can check it out here if you like:

http://www.adventuresofgreg.com/24hour.html

Then I made plans for a long training day today (Thursday) on the water with the boat gathering some really solid speed/watts averages over about 5 hours. This is what I need as my final sort of confirmation that breaking Carter’s 242 km distance record is even remotely possible for me.

I’m not sure I mentioned this before, but I found some spring steel to use as a flexible propeller shaft, but it was 1/4″ rather than my 3/8″ stainless shaft. I had to get my machinist wizard to whip me up some new couplers to mount the shaft onto the gear box, and to mount my 3/8″ bore prop and hardware onto the other end of the new 1/4″ shaft. I picked up the new parts from Manny yesterday and installed them along with a new 55 tooth chain ring and new Dura-ace chain. Of course, the new chain ring meant adding a link to the chain which meant moving the gear box back to tension the chain, but I didn’t think twice about it and assumed everything would be great.

This is the new extended coupler between the gear box and the new 1/4″ spring steel shaft. We shortened the length of spring steel shaft being curved by starting the shaft at the water level.

Wrong. (loud buzzer inserted here!). I drove 45 minutes to Ghost lake today prepared to spend the day out there and right away the prop started smashing into the hull. DAM! When I adjusted the gear box position, I had inadvertently reduced the shaft angle and now at 150 watts (about 83 rpm with my new gear ratios), my razor sharp prop starts to slice through the thin carbon hull. Basically, two knives spinning at 400 rpm.

I stopped in time to save the hull from being cut open and messed around with the chain length and gear box angle to fix it lake-side. I was able to lower the prop so it didn’t hit the hull when I spun-up by lengthening the chain. The chain was floppy and derailed continuously, but I did get a couple of out and back runs in at my target 150 watts. My speed was disappointingly slow – I think just over 11 km/hr – that sucks! I was expecting an additional .2 km / hr speed GAIN. The reason is that I was speaking to George from Mitrpak about the preload on the gear box. He had run some tests and determined that I should back-off the lock nuts and remove the seals. I did, and instantly REMOVED the 5 watts it took to spin the gear box! This is really new news, as an 5 additional watts is now magically ADDED to my power which according to the calculator, should result in an additional 1.5 to 2 tenths of a km/hr speed gain. For free! I have no idea why I wasn’t seeing anything close to what I was expecting for speed, so I packed everything up and drove the 45 minutes back home. It was getting windy as freaking usual, so that could be one reason for the lack-luster speeds.

Back into the shop yet again. I decided the best way to isolate the gear box angle from the chain tension is to add a spring loaded chain guide. Luckily I had a Surely chain guide that I was able to fit onto the frame. It actually works really well. I can adjust my gear box angle, or swap the 12 tooth gear for a 13 tooth and not have to add or remove links from the chain.

This is the new spring loaded chain guide. It seems to work great.

The plan is to test this at Elbow tomorrow morning first thing before the wicked wind starts to roar. I have two shafts ready to test – the free, strutless shaft and a version with the old strut. I’m trying to get everything set so I can focus on planning the 24 hour event and my training. I expected that I was there – done. Ready to move on. This is very frustrating. I’m also trying to get everything set for a long testing day at upper Kananaskis lake on Saturday with my friend Chris Comfort.

ah well, if this was easy everyone would do it. Actually, no. I think they would all rather be doing something else. Non-stop pedalling for 24 hour straight isn’t exactly a luxury cruise.

Along with the larger chain ring, I also lowered my seat ever further. This meant cutting out a section of the aluminum frame and shortening it. This position is now EXACTLY like the M5. I want to be sure that 100% of my M5 training applies to the HPB record.


I also changed the steering –
this works WAY better and I guess it was one thing that happened today


Posted by: adventuresofgreg | June 23, 2008

An honest look at my chances

I sat down with the last 5 years of my SRM power data from training, the speed test results from 3 different lakes with V11G and a calculator and tried to come up with a realistic prediction of what my chances are to beat Carter Johnson’s 242 km flat water kayaking 24 hour distance record. I needed to consider what the weather conditions would likely be during the attempt, what my realistic power output capabilities are, and the differences between the surveyed course and my actual track.

My prediction is that I will cover between 242 km and 256 km. It will be CLOSE, and it will probably be the toughest physical challenge I have ever attempted.

When I set the 24 hour human powered vehicle distance record of 1042 km in 2006, we were able to accurately predict my potential distance before the event by testing Critical Power streamliner on the track at various power outputs using the SRM. I knew from training and previous 24 hour record attempts, that I was capable of finishing a 24 hour event with an AVERAGE power output of between 110 and 115 watts. This finishing average seems low, but it INCLUDES zeros logged from brief periods when I was not pedalling, and pit stops. My actual average when turning the pedals around was between 150 and 160 watts.

Predicting my distance based on real average power output is basic physics. If we know what the total amount of energy that is put into the system (watts of power), the drag coefficient, and rolling resistance of the vehicle, air density and other environmental factors, then we can fairly accurately predict distance covered.

I can do exactly the same thing with V11G and the 24 hour human powered boat distance record. If you look at the speed graph above, you will see that the curve isn’t perfectly linear meaning that using an overall average power output shouldn’t result in the same average speed that using ACTUAL fluctuating power values would. But in this case, it does.

For example, If I pedalled at 150 watts of power for the first 12 hours, according to the graph, I would average 11.7 km / hr, and if I pedalled at 100 watts for the last 12 hours, I would average 10.1 km / hr resulting in a total 24 hour average speed of 10.9 km / hr and 125 watts of total average power. Looking at the graph, we see that my average speed for 125 watts of power is exactly 10.9 km / hr, so the graph data is fairly linear at power levels that I would normally be operating at for a 24 hour effort.

To estimate my total average power output capability over 24 hours, I used two SRM data files: the first 12 hours from the 2006 HPV 24 hour record (the SRM battery died after 12 hours), and confirmation data from a 14 hour, 400 km training ride from Calgary to Jasper in 2006.

My averages for the first 12 hours at the HPV record on the race track in Eureka, California was 120 watts and 568 km total distance (49 km / hr average speed). Since I finished with a total distance of 1047 km, I calculated that my second half average power would have been 110 watts resulting in a total overall finishing average of 115 watts for the entire 24 hours. I believe that with an additional 2 years of training under my belt, I am now capable of finishing with an average of 120 watts.

You will note that there are two curves on the plot: “ideal conditions” and “5 to 10 km of wind”. In a perfect world I would attempt the record on a PERFECTLY windless day, but I am not really sure that actually exists. In reality, if I luck out and get a very good weather day, there will still be some wind and it will peak by late afternoon.

So, using the speed curve graph and my power output capabilities, here are some worse case to best case scenario predictions:

  • #1. Worse case: 10 kph winds all day, poor average power
  • Power: 100 watts
  • Average speed: 10 km / hr
  • Total distance: 240 km
  • GPS vs actual course (-1.3%): 236.8 km (5.2 km under the record)
  • #2. Medium case: 10 kph winds for half the day, moderate average power
  • Power: 110 watts
  • Average speed windless half: 10.7 km / hr
  • Average speed windy half: 10.3 km / hr
  • Total distance: 252 km
  • GPS vs actual course (-1.3%): 248.7 km (6.7 km over the record)
  • #3. Good case: 10 kph winds for half the day, good average power
  • Power: 115 watts
  • Average speed windless half: 10.8 km / hr
  • Average speed windy half: 10.5 km / hr
  • Total distance: 255.6 km
  • GPS vs actual course (-1.3%): 252.2 km (10.2 km over the record)
  • #4. Very good case: 10 kph winds for half the day, best average power
  • Power: 120 watts
  • Average speed windless half: 11.1 km / hr
  • Average speed windy half: 10.7 km / hr
  • Total distance: 261.6 km
  • GPS vs actual course (-1.3%): 258.2 km (16.2 km over the record)
  • #4. Best case: windless day, best average power
  • Power: 120 watts
  • Average speed: 11.1 km / hr
  • Total distance: 266.4 km
  • GPS vs actual course (-1.3%): 262.9 km (20.9 km over the record)

What I need to do to confirm these predictions is to spend about 5 hours straight going around a large lake in good weather conditions at my planned power output of 150 to 160 watts and record my resulting average speed. The objective would be to allow my overall average power to drop down to 120 watts, and then observe the total distance covered in the 5 hour test ride.

——————————–

No matter how good you are or think you are, there is always someone waiting around the corner who can show you how much you really suck.

Orlando Borini – 24 hour road bike distance record holder 869.5 km

In the pursuit of what is possible using human power and all of the technology available to me, I can’t help but wonder what the true limits are – that is, if we combined an athlete with world-class power with my human powered vehicle technology.

The current 24 hour road bike distance record is owned by Italian Orlando Borini. He cycled his time trial bike an unfathomable 869.5 km in 24 hours around an airport road in Italy in 2007. I calculated that Orlando would have had to output an average of 200 watts of power to average 36 km / hr for the entire 24 hour race.

To put that into perspective for you, I averaged the same 36 km / hr on my time trial bike at Ironman Arizona (flat course) and averaged exactly 200 watts and finished the 180 km bike route in almost exactly 5 hours. That put me second in my age group and I finished the day in 4th place. Big whoop. Orlando Borino did the same thing I did for 24 hours instead of 5 !!! In my defence, I am 47 years old and have never taken performance enhancing drugs, nor have I ever trained or competed as a professional cyclist.

Out of curiosity, I did an analysis of my current fitness level and I found that I am right about in the middle between an “average healthy person” and a “world class athlete”.

First, I took my power tests and compared my watts/kg of body weight to the ‘power profile’ table and found that I have been as high as 4.2 watts/kg for the 20 minute test which puts me at the bottom of Cat 1 level cyclist. Not quite at the pro level, but pretty far from an untrained athlete.

Power Profile


Greg’s power test data
Then I searched the Internet for more data on human endurance and found two graphs which confirm where I fit into the human power world using my 20 minute power profile, my 24 hour average power output, and Orlando’s world class 24 hour power. The graph below shows my data inserted right about in the middle between a healthy human and and world class athlete. I added the top line which shows power for 24 hours.


Human power graph #1


Human power graph #2

Posted by: adventuresofgreg | June 19, 2008

360 km day!

I talked my friend Bryon Howard into joining me for a 310 km Highwood loop ultra training ride and he actually said yes! Bryon is training for Ironman Canada. A 300+ km training ride is probably a bit excessive for Ironman training, but Bryon had never done a ride that long, so he was into the challenge.

I needed to extend the day, so I woke up at 6:00 am and did two hours of cycling inside on the mag trainer before we started the big ride.


Flat #1


Flat #2

The day started out with Bryon getting TWO flats – the first on the front tire and the second on the rear tire – BEFORE we even got to the end of my driveway!

Other than the flats, the trip was great! We finally took off by 9:45 am and made it home by 10:15 pm. 12.5 hours and 310 km + my 50 km inside ride for a grand total of 14.5 hours and about 360 km.


Bryon checking his crackberry in Black Diamond

Almost home as the sun starts to set

My buddy Greg Bradley met us on the home stretch


Bryon and Greg B

Almost home!

Highwood loop – the award winning, critically acclaimed movie

Posted by: adventuresofgreg | June 17, 2008

Strutless bizarreness

I went out to a new lake today and the test results were enlightening. I think I can narrow down the speed difference between what we measure at Elbow lake and both Glenmore reservoir and today’s Ghost lake to a preferential current flowing through Elbow lake.

I’ll explain: At Elbow, I noticed that my average speed doing a counter clockwise loop around the lake was 11.7 and my speed doing a clockwise loop was 11.1 (km per hour). I assumed this was due to some natural left hand turn tendency of the boat that I was fighting when turning right.

We also assumed that the average speed would be slightly higher when moving in a straight line. At yesterdays Glenmore test and today’s Ghost Lake test, this was NOT the case – it was slower in a straight line. We figured that must be due to less drag while turning left and started looking into issues like the strut possibly not aligned and acting like a rudder, recalculating the amount of rudder required of offset the side thrust, and looking at the hull itself.

I repeated a short, 1/2 km loop in both directions today at Ghost lake and was very surprised to measure the same average speed in both directions which was 11.5 kph. This pointed to a current at Elbow being the issue. My average speed over BOTH directions at Elbow just happens to be 11.4 kph – very close to my average today. If we add .1 kph for the smaller flexible shaft to the 11.4 Elbow speed, both speeds are exactly the same.

Elbow valley lake is fed by a small river flowing into the West end. There is a levy that runs under a bridge at the south west side of the lake. The direction of water flow would be from the river then south then south across the lake over the levy. A counter clockwise loop would be taking advantage of this flow whereas a clockwise loop would be fighting the current for at least 1/2 of the loop. There is PLENTY of water flowing right now, as the spring melt is happening. The water level in Glenmore and Ghost lake is very low in preparation for the spring melt from the mountains. Stefan tells me it is creating all kinds of strange eddies and currents. Not the most ideal testing conditions.

This Elbow current result is good news and bad news. The bad news is that my REAL average 150 watt speed is 11.5 kph, not 11.8 like I thought. This could be worth as much as 7 km over 24 hours if I could maintain an ending average of 150 watts (which would not happen). More likely, the difference is probably worth 4 to 5 km over 24 hours. The good news is we found the problem and it isn’t anything I can do anything about.

This is bizarre: During today’s trouble shooting session at Ghost, I wanted to eliminate the prop strut as the cause of the problems so I just took it off. That’s right – there was NO strut holding the prop to the boat – just the shaft. The prop was dangling off the end of an unsupported shaft coupled to my gear box.

The two-blade pusher prop is self-stabilizing meaning that each blade corrects it’s attitude when the other blade slips due to changes in the angle of attack (or something like that – I’m regurgitating what Rick told me). I may not be explaining it correctly, but I understand what is happening. This means that the prop will simply start pushing against the shaft and find a horizontal attitude on it’s own.

And it works! There was no perceptible difference in feel when I removed the strut, and there was a .1 kph increase is speed due to removing the drag of the strut. Very strange. If you saw it you would laugh and think it is a joke.

This is the strutless prop. No joke! It works!

A nano-second after tripping the shutter for this photo,
a gust of wind came up and blew the boat off the stand
into the water busting my rudder in the process!

Speed data:

date lake power watts wind kph waves rudder prop loop size km loop dir hull floats other SPEED kph
06/05/08 elbow 150 5 ripples big thin .5 counter taped norm
11.1
06/09/08 elbow 150 calm flat big thin .5 counter painted norm
11.2
06/09/08 elbow 150 calm flat small thin .5 counter painted norm
11.7
06/09/08 elbow 150 calm flat small thick .5 counter painted norm
11.7
06/09/08 elbow 150 calm flat small thin .5 counter painted norm prop strut pulled into hull with cord 11.6
06/09/08 elbow 150 calm flat none thin .5 counter painted norm
11.8
06/09/08 elbow 150 calm flat small thin .5 clock painted norm
11.1
06/09/08 elbow 150 10 ripply small thin .5 counter painted norm
11.5
06/12/08 elbow 150 20 waves big thin .5 counter painted norm
11.0
06/09/08 elbow 150 20 waves big thick .5 counter painted norm
10.9
06/09/08 elbow 150 20 waves small thick .5 counter painted norm
11.3
06/09/08 elbow 150 20 waves small thin .5 counter painted skimmers rods 10
06/09/08 elbow 150 20 waves small thin .5 counter painted skimmers no rods 10.2
06/16/08
elbow
150
calm
flat
small
thin
.5
counter
painted
norm
flex shaft & freehub
11.9
06/16/08 elbow 150 calm flat small thin .5 counter painted norm flex shaft & freehub 11.8
06/16/08 elbow 150 calm flat small thin .5 counter painted norm flex shaft & freehub 11.8
06/16/08 elbow 100
calm
flat
small
thin
.5
counter
painted
norm
flex shaft & freehub 10.3
06/16/08 elbow 200 calm flat small thin .5 counter painted norm flex shaft & freehub 13.2
06/16/08 Glenmore
150
calm flat small thin 2
out&back
painted
norm
flex shaft & freehub 11.1
06/16/08 Glenmore 150 calm flat small thin 2.6
out&back
painted norm flex shaft & freehub 11.1
06/16/08 Glenmore 150 calm flat small thin 1.35
counter
painted norm flex shaft & freehub 10.9
06/16/08 Glenmore 150 10
ripply
none
thin
.84
counter
painted
norm
flex shaft & freehub 11.6
06/16/08 Glenmore 150 10 ripply big
thin
.8
counter
painted
norm
flex shaft & freehub 11.1
06/17/08 Ghost
150
5
ripply
small
thin
.8
out&back
painted
norm
flex shaft & freehub 11.6/11.2 = 11.4
06/17/08 Ghost 150 5 ripply small thin .52 counter painted norm flex shaft & freehub 11.5
06/17/08 Ghost 150 5 ripply small thin .56 clock painted norm flex shaft & freehub 11.6
06/17/08 Ghost 150 10 ripply small thick 1 out&back painted norm flex shaft & freehub 11.7/11.2 = 11.4
06/17/08 Ghost 150 10 ripply small thick .7 out&back painted norm flex shaft & freehub. NO PROP STRUT
11.8/11.2 = 11.5
Observations
1. Every 5 kph of wind equates to .1 kph decrease in speed
2. Big rudder is .6 kph slower than small rudder. Small rudder is .1 kph slower than no rudder
3. Right hand turns dramatically slow the boat down.
4. Paint vs packing tape was worth a speed increase of .1 kph
5. Elliminating the prop strut is worth an additional .1 kph in speed.
6. Counter clockwise loops at Elbow Valley lake are worth an additional .2 to .3 kph average speed due to current (??? need to verify)

Posted by: adventuresofgreg | June 16, 2008

New confusing speed data

Posted by: adventuresofgreg | June 16, 2008

Grizzlies and a freeprop

Our climb up the Highwood

———————–

Great training day on Friday with Dennis from Boulder CO and his friend Danfa from San Diego. We drove out to the start of highway 40, about 40 km east of Banff and cycled south about 150 km up and down the pass which is still closed to traffic until Sunday. It was a good, hard ride – they are both fairly experienced and capable cyclists and I was challenged to keep up with them climbing the pass. We saw mountain goats, big horn sheep and two Grizzlies.

Dennis and Dafna as we climb the Highwood pass

There is still plenty of snow at the top


Mama grizzly bear and her cub at the side of the road

—————————————-

The problem with using the 3/8 stainless rod as a flexible shaft for the pro is that it will eventually fail. Rick calculated the stresses for a number of different materials and I think in order for a fail-safe stainless shaft it would need to be something like 10 feet long. The alternative is to use 2011 T8 aluminum or spring steel. We can’t get the 2011 aluminum anywhere and I found 1/4 inch spring steel from a flexible drill shaft manufacturer and purchased some from them.

It’s 1/4″ OD rather than 3/8″, so none of the couplers that Manny machined for me will work, so I just welded a 3/8″ stainless length to the end where the prop hardware slides onto. I would plan to ask Manny to machine some nice parts for me, but I wanted to make sure that the spring steel shaft would work first (the length, depth, feel, etc).

I wanted to see what riding with a free wheel would be like so I cut apart this old Shimano freehub that I had and coupled it to the shaft. Now the ride should be more like a road bike than a fixed gear and I should be able to coast a bit without having the stopped prop add so much extra drag. Again, Manny can machine some nice parts for me to mount the freehub, but I wanted to make sure that this freeprop was something that is worth even adding – not sure about that yet – I need to give it a try.


Posted by: adventuresofgreg | June 12, 2008

More tests

I was visited by Dennis and his friend Dafna from Boulder, CO and San Diego respectively. Dennis has been following my progress for a while and was interested in meeting me. Dafna is a member of the Dewalt cycling team. They were passing through Calgary and stopped in to meet me, so I seized the opportunity and dragged them out to the lake to help me through another round of tests.

Since the weather was not as crappy as it’s been lately (rather than high wind, cold and rain we have high wind and cold), the test for today would be to see if the thicker prop doesn’t start to stall when powering into a headwind. After Manny finished milling the prop, he finished it smooth and ended up removing about a mill too much of aluminum from the mid section of the airfoil on the prop. According to the prop data, if it is 1 mil too thin, then it will stall very quickly if if exposed to higher RPM’s. The new prop that I wanted to test today is an extra prop with some small flaws on it that hasn’t been polished smooth, and is still 3 mils thick.

It made no difference to my average speed at 150 watts around my circular course, and the wind was REALLY blowing hard.

I compiled all of my speed data including today’s results into a table which I will start keeping:

date lake power watts wind kph waves rudder prop loop size km loop dir hull floats other SPEED kph
06/05/08 elbow 150 5 ripples big thin .5 counter taped norm
11.1
06/09/08 elbow 150 calm flat big thin .5 counter painted norm
11.2
06/09/08 elbow 150 calm flat small thin .5 counter painted norm
11.7
06/09/08 elbow 150 calm flat small thick .5 counter painted norm
11.7
06/09/08 elbow 150 calm flat small thin .5 counter painted norm prop strut pulled into hull with cord 11.6
06/09/08 elbow 150 calm flat none thin .5 counter painted norm
11.8
06/09/08 elbow 150 calm flat small thin .5 clock painted norm
11.1
06/09/08 elbow 150 10 ripply small thin .5 counter painted norm
11.5
06/12/08 elbow 150 20 waves big thin .5 counter painted norm
11.0
06/09/08 elbow 150 20 waves big thick .5 counter painted norm
10.9
06/09/08 elbow 150 20 waves small thick .5 counter painted norm
11.3
06/09/08 elbow 150 20 waves small thin .5 counter painted skimmers rods 10
06/09/08 elbow 150 20 waves small thin .5 counter painted skimmers no rods 10.2
06/16/08
elbow
150
calm
flat
small
thin
.5
counter
painted
norm
flex shaft & freehub
11.9
06/16/08 elbow 150 calm flat small thin .5 counter painted norm flex shaft & freehub 11.8
06/16/08 elbow 150 calm flat small thin .5 counter painted norm flex shaft & freehub 11.8
16/16/08 elbow 100
calm
flat
small
thin
.5
counter
painted
norm
flex shaft & freehub 10.3
16/16/08 elbow 200 calm flat small thin .5 counter painted norm flex shaft & freehub 13.2
16/16/08 Glenmore
150
calm flat small thin 2
out&back
painted
norm
flex shaft & freehub 11.1
16/16/08 Glenmore 150 calm flat small thin 2.6
out&back
painted norm flex shaft & freehub 11.1
16/16/08 Glenmore 150 calm flat small thin 1.35
counter
painted norm flex shaft & freehub 10.9
16/16/08 Glenmore 150 10
ripply
none
thin
.84
counter
painted
norm
flex shaft & freehub 11.6
16/16/08 Glenmore 150 10 ripply big
thin
.8
counter
painted
norm
flex shaft & freehub 11.1
Observations
1. Every 5 kph of wind equates to .1 kph decrease in speed
2. Big rudder is .6 kph slower than small rudder. Small rudder is .1 kph slower than no rudder
3. Right hand turns dramatically slow the boat down.
4. Paint vs packing tape was worth a speed increase of .1 kph

The other test we did was an idea from Warren Beauchamp who suggested that planing skimmers rather than displacement hull floats might be more efficient. He sent me instructions for building the skimmers that he made for his Necky kayak HPB. They are simply two strips of 1″ thick Styrofoam. I was worried that they wouldn’t provide enough buoyancy, so I added some pool noodle foam to the ends of the arms, but thin foam skimmers provided more than enough bouyancy without the pool noodles. I positioned the skimmers to just sit slightly above the water with the tails pushing down slightly to just below the water line. The tails were pushed down using two fiberglass tent poles.

At first they felt really nice – way lighter than the floats for sure. But the tips kept digging down into the water and I thought they were going to snap in half. We pulled the boat out and used duct tape to pull the skimmer tips back – it looked like what Santa would ride if he ever ditched his sled and went the human powered boat route. This worked very well, and I could get up to speed without any issues. My speed was pretty slow though – about 10 kph for the loop rather than 11.3 and I noticed that the tails were really dragging down into the water. We removed the tent poles and went for another run. This time the speed was 10.2 – not much better and probably not worth pursuing any further.

In this photo you can see the fiberglass tent poles
pushing the tails of the skimmers down into the water.

Overall, because of the high winds today my speeds were about .4 kph slower than when it was calm. Over 24 hours that would add up to about 9.6 km if I were able to maintain 150 watts for the entire 24 hours which wouldn’t happen. Also, the winds typically start up in the afternoon and die down after 6:00 pm. If it was very windy for 8 hours of the 24 hour day, and I lost an average of .3 kph, I would loose a total of only 2.4 km. That’s not as bad as I thought it would be.

Because I’ve done two wind tests, I can estimate that for every 5 kph of wind at 150 watts of power, it costs me .1 kph

Dennis going for a spin
Posted by: adventuresofgreg | June 12, 2008

happy with where I am at right now

I've been a bit stressed out recently – probably a combination of many various things. My son is leaving us this summer for Duke University and it is going to be really hard to see him go. Helen is swamped with her new job as the race director for the Calgary Marathon which is only about a month away, and she's working her brains out. I think the biggest stress for me lately has been the agonisingly slow progress of the PedalTheOcean project. I would make faster progress if I sat with my chair facing the wall and spent a few hours smashing my head against it.

However, right now I am feeling very happy. It took some thought as to exactly why, and I think I have made some valuable insights:

1. I need to have a worthy goal underway. It must be challenging and it must involve a physical component that requires demanding physical training. The challenge must be difficult, and it is OK if it is impossible. It is also very important that the challenge require plenty of CREATIVITY. Trying something that hasn't been done before, or finding new ways to solve problems.

2. I need to have more than one worthy goal underway at the same time. I am a huge believer in focus, but I also see tremendous value in balancing a couple of different projects at the same time for the simple reason that at least one project is always running smoothly when the another might not be. When I was running my companies way back in the early 90's, I could stay very motivated in pursuit of my challenges if at least one of my ideas, ventures, companies, or projects was working out the way I envisioned. Small successes always provided the fuel that kept me plugging away at the day to day, mundane stuff.

3. I need to structure an environment where failure is a viable option. I believe in sticking to a plan and accomplishing my goals, but I believe it is very unproductive to continue to invest time, money and resources into a project with diminishing returns – or something that has turned into major UN-FUN. Serious challenges always involve periods of agony, stress and disheartening failures. I am NOT advocating giving up at all! It's just sometimes when everything is going against you, you need to take a step back, pause for a while and reconsider the whole concept. The reason it's all 'going against' you is probably your own fault. Stop, step back and re-think your approach.

4. I need to structure an environment that is conducive to allowing me to focus what I am good at, and for others to contribute their expertise to the project. I get very frustrated when I feel like I have to do something that I don't want to do, or feel like I am incapable of producing the level of quality required.

I'm sort of at insight #3 and #4 right now with PedalTheOcean. Not that I am any where near quitting, but I do need to take a step back from the project for a while, and do some serious thinking about what exactly I want to achieve from it. I need to contemplate how to restructure the project environment to best take advantage of what value I can bring to the table, and structure an organization that works and makes me happy and confident that we can achieve the end goal.

With PTO right now, I feel like I am pushing a 2 ton piano up a steep hill. Every time I stop pushing, the piano rolls right back on top of me. The moment anything abut PTO exits my immediate consciousness, everything grinds to a screeching halt. These days I am constantly on the phone or emailing to keep things moving along. Push, push, push, push, push all the time. It's really frustrating and becoming very un-fun in a big way. Everything from getting the naval architect to finish the final drawings to finding a boat builder to resolving my support boat issues to getting help with equipment purchases. If I'm not actually doing it, NOTHING gets done. And unfortunately, the project is way too big for me to do everything.

I need to find a way to structure this project in a way that involves a TEAM approach – not just the one-man-band. I can't do everything myself, and I am sick and tired of begging, pleading, bitching, harassing, etc. This is not a safe way to set an ocean crossing speed record.

I also realize that finding a support/safety boat is NOT going to be easy! I am faced with probably having to buy my own boat and manage crewing it myself, and I don't have the financial resources or expertise for that. Sailing across the Atlantic in a yacht is an expedition in and of itself! It was always my objective to find a corporate sponsor to help offset costs like support, and so far I have only been able to raise a few thousand dollars from small companies and individuals who are interested in what I am trying to accomplish. I have also received plenty of sponsorships in the form of gear and supplies, but this is only a very tiny portion of what I need to pull this off, and finding those gear sponsors is very time consuming.

I am totally psyched about Ocean WiTHiN which is mostly Rick Willoughby's design. I think it is a really promising concept and we have come so far with the WiTHiN prototype – testing, sea trials, training and learning. This is going to be one VERY cool machine, and I think the technology developed as part of this project can be applied to many areas to improve energy efficiency. As an example of what Ocea WiTHiN should be capable of, in April during my second sea trials with WiTHiN prototype, in only 4 hours I managed to journey 35 km directly West into the Pacific off of the Tofino BC coast, and 35 km back again. If I had been going one-way, in 8 hours I would have traveled 70 km due West and probably well over 100 km that day, and that was against the prevailing currents and weather. This is not intended to diminish in any way the challenge my friend Roz Savage has on her hands, but a few days ago, she was on day TWELVE of her California to Hawaii rowing expedition and she was about 100 miles from the coast. Yes, Roz was and is currently battling some pretty fierce winds and sea conditions, and she has to spend most of her time these days locked in the cabin waiting for better weather rather than rowing. Roz is an inspiration to me, but these behemouth, ocean rowing boats are just not the most efficient way to travel across an ocean on human power. Ocean WiTHiN is not only far more efficient and faster, but it is designed to continue to make way in adverse weather. If you try to do so on the open, exposed deck of a rowing boat, you are risking your life. The caviot, of course, is this has yet to be proven, but I firmly believe that I am on the right track.

I have so much more to learn and I am really looking forward to gaining more ocean experience and training. I am also really excited about the challenge of crossing the Atlantic ocean in less than 40 days, and I think we can do it. But, I realize that I cannot do this myself and I do need help. I need to take a break from the project and do some serious thinking about how I can structure it in a way that makes it a REAL team effort. Pursuing some major corporate sponsorship funding is probably that place I will have to start, and maybe I should follow in the footsteps of Pete Bethune from Earthrace who hired a CEO – Fiona Clark. I like that idea.

For now, I am VERY happy just focusing on the 24 hour human powered boat distance record attempt. I have a boat (Rick Willoughby's V11 design) that I believe is probably the fastest boat powered by a human (for distances longer than a few km). The challenge is VERY daunting! I need to beat a world-class kayaker by the name of Carter Johnson who owns the current record of 242 km in 24 hours. He is a beast and this is going to be TOUGH.

I am happy now because V11G is very close to design specification speed, and very close to fast enough to perhaps challenge Carters record. I am at the fine-tuning phase, and I have a very accurate testing protocol where I feel confident that I can measure very small changes in efficiency due to experimental modifications to the boat. This is fun because it invites some creativity on my part.

  • What effect does waxing the hull have on the speed?
  • How about lighter outriggers?
  • Would Styrofoam planing skimmers be faster than the outrigger floats?
  • What effect would different shaft materials have on speed? (spring steel, aluminum)
  • Can I maintain a faster average in windy conditions if I added a fairing?

With my pre-set loop course, GPS and SRM power meter, I can answer all of these questions and continue to fine-tune the boat into world record speed territory. This is the fun part! Plus, I know how hard this challenge is and that really lights a fire under this aging butt regarding my training.

It looks like the weather is going to break tomorrow, so I will head back to the lake for more testing. I made a couple of skimmers to replace the outrigger floats. The weather looks very good for Friday, so I am planning a fast 100 miler training ride on the M5.

Have a great day and a fantastic weekend!

Cheers,
greg

—————–
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Pedal The Ocean: http://www.pedaltheocean.com

Posted by: adventuresofgreg | June 9, 2008

Rudder envy

I made a new rudder designed to keep the boat tracking straight. It is ridiculously tiny. The photo below does not do it justice. It’s 1″ wide, and it works like a charm. I found it very easy to make slow, gradual turns and keep the boat tracking in a straight line. Without any rudder at all, it wants to turn left, so this small little wonder works very well.

I also had the hull finished and painted. It is WAY smoother, and contrary to most of the advice I have been getting, is NOT responsible for any appreciable speed gains! I really don’t think that at these speeds, surface finish is all that important.

The good news is that we are now very close to design specs for speed!

I found that the only way to get accurate speed/power data was by doing large GPS speed averaged loops around the perimeter of the lake. They are VERY accurate. I was able to repeat the same configuration more than once and get the exact same average down to .1 kph. I use an SRM power meter connected to the cranks, so I am able to output a constant power level and record my average speed over a set course with a GPS. Repeating this with small changes to the boat allow me to quantify the effect those changes have.

Here are the results of today’s testing:

  • thin prop, large rudder, left hand loop, 150 watts, no paint on hull, packing tape on hull (test from last week) = 11.1 kph
  • thin prop, large rudder, left hand loop, 150 watts, painted hull = 11.2 kph
  • thin prop, tiny rudder, left hand loop, 150 watts, painted hull = 11.7 kph
  • thicker prop, tiny rudder, left hand loop, 150 watts, painted hull = 11.7 kph
  • thin prop, tiny rudder, left hand loop, 150 watts, painted hull, prop strut pulled close to the hull by a cord ( I wanted to see what would happen if we moved the prop closer to the hull) = 11.6 kph
  • thin prop, NO rudder at all, left hand loop, 150 watts, painted hull, = 11.8 kph
  • (I had to stop and start the GPS 2 times to paddle correct course, but I don’t think it mattered)
  • thin prop, tiny rudder, RIGHT hand loop (counter to the way the boat naturally wants to steer), 150 watts, painted hull, = 11.1 kph (I had to use the dip steer rudder a couple of times to stay on course, but I still think this was slower because it went against the natural turn of the hull/prop)
  • thin prop, tiny rudder, left hand loop, 150 watts, painted hull, windy (small ripples on water) = 11.5 kph

The tiny little rudder worked very well for keeping a straight line, doing a gradual turn around the lake or for correcting my heading, but was useless for doing any kind of turns. I rigged up my old large rudder up with a spring and pull cord and hung it off the stern for when I needed to do big turns and it worked, but nowhere near as good as when that large rudder is under the hull turning in the rudder tube. I don’t have a photo of it – I’ll take one next time.

For general touring around and training, the large rudder in the rudder tube works fine. For the record attempt, and testing where I will steer around a large, gradual, round course, the small rudder works fine and I don’t even need the dipping rudder.

Pulling the prop strut in tight to the hull using a cord did not do anything to correct the direction of thrust. In fact, I took a close look at the thrust direction when spinning the prop while held back to the dock and the thrust is very straight – I don’t think that is the problem. I believe it is due to the thrust being at the side rather than right down the middle, and the cost of putting the thrust in the center would probably cost more than the couple of watts it probably costs now.
To summarize, the paint and body work added some weight because I had to add one washer to lift the outriggers, but the paint made it only .1 kph faster than packing tape, and the packing tape improvement over the unpainted hull wasn’t quantified in the loop test, but the straight-line tests showed no difference. The small rudder compared to my large rudder is worth .6 kph (that’s huge), and a bit of wind (maybe 10 kph) was worth a reduction of .2 kph. The wind effect could also be fairly significant because average wind speeds typically reach highs of 15 to 20 kph during mid afternoon around Calgary.


This is a cord we strapped to the rudder strut to pull it toward the hull. It didn’t change the left steering tendency, and slowed it down (probably due to the drag of the cord) by .1 km/hr


Greg Bradley going for a spin

Posted by: adventuresofgreg | June 6, 2008

PedalTheOcean is going on "PAUSE"

I am going to push the PAUSE button on PedalTheOcean for a little
while to let me catch my breath and figure out a way to get the
project re-organized in a way that works better for me. Because it's
not working right now – at least not in a way that makes me happy, or
in a way that I believe has the best chances of concluding with a safe
and successful human powered journey across the ocean.

I came to this conclusion AFTER writing this, which ended up being a
valuable therapeutic exercise. It forced me to really think about my
long term goals, short term goals and contemplate how to incorporate
stuff I enjoy doing into achieving those goals and attempting to
elliminate most of the stuff I really don't like.

If I could buy a fully tested, time-proven, completely equipped pedal
powered boat, ready for an ocean crossing in the Canary Islands,
complete with a support team ready to go, I would do it tomorrow and
go. What makes my human powered crossing different than simply
entering Woodvale's 2009 Atlantic Rowing Race, is that none of the
infastructure, or tested and proven pedal powered ocean capable boat
technology exists for what I am trying to do. I have to do it all
myself which is definately part of the challenge I set out for myself.
It's just that the infastructure I have set in place for accomplishing
this challenge isn't right for me or the project, and I really need to
take some time to figure out a way to make it work.

It's a huge job and it has to be done right. My life is on the line.
If I keep going the way I have been, I am afraid that I will take one
too many short-cuts and end up in trouble.

All of my previous and current projects aside from PTO are very much
solo efforts. PTO is way too big for that and I need to find a way to
make it a team effort. The one-man show can only get me so far and PTO
is too big to do it all on my own. The fact that a major corporate
sponsor has not yet materialized has alienated me further by pushed me
deeper into the solo zone.

To summarize, Pedal The Ocean really needs the backing of a TEAM. I'm
done with the solo approach. I need to take the time to figure out how
to structure this expedition in a way that provides every member of a
team some kind of suitable return for their time investment – weather
it is financial, fame and glory, exposure, experience, or what ever
they might be looking for.

If you are interested in reading more about how I came to this
conclusion, following is the expanded train of thought that lead me to
this decision. As always, your thoughts and comments are welcome (see
below for comment submission directions)
————————————————————–

I'm totally frustrated these days and to top it off, my ambition level
towards my various projects has reached an all-time, rock bottom low.
I have some ideas why and thought it would help me to lay it all down
in a blog post. One of the reasons I like to blog is it keeps me
focused on my goals and I find the act of writing to be a very
powerful way of forcing me to really think-through what I am trying to
accomplish. Step one in achieving a goal is to make a plan. Step 2 is
to FOLLOW the plan. Keeping a public journal is a really efficient way
to plan and stick to your plan.

I sat behind my desk for hours yesterday morning (heck, make that
EVERY morning for the last 2 weeks!) procrastinating regarding the
work I know I need to do on the 24 hour boat waiting patiently for me
the in shop. I just hate the thought of going into the shop now – I'm
frankly just totally sick of it. I find that when I'm in there working
away, all I can think of is the absolute fastest and painless route to
getting it done. It's a serious case of getitdoneitis. Unfortunately,
the fastest and easiest way to get something done isn't always the
right way. The satisfaction that I usually feel when creating
something with my hands is completely gone right now.

I am sure that part of my attitude toward my still nameless 24 hour
record attempt boat is the fact that I am 12% below my efficiency
benchmark required to make a serious attempt at Carter Johnsons 245
km, 24 hour kayaking distance record. I honestly feel that I will
solve the problem(s), but my attitude toward actually physically doing
the work required to test possible solutions would have me fired if I
was doing this for a living.

The fact that I have been dealing with a bit of an injury which has
really derailed my training for the 24 hour event isn't exactly
cranking-up the levels of enthusiasm either. The one aspect of
everything I am doing that I really do feel enthusiastic toward is my
training. So much so, that I have been resenting the other work that
often takes precident over my workouts.

This recent bad attitude virus I've come down with isn't limited to
the 24 hour record boat – unfortunately, it has really effected
progress on PedalTheOcean project. I'm not in the shop anymore with
that, as I have decided to farm out the construction of the human
powered boat that will take me across the Atlantic ocean. The problem
I'm having with PTO right now, is I am tired and worn out from
pushing, pushing, pushing all the time. When I'm not actually DOING
the work myself, I'm on the phone, or email trying to get it done and
more often than not, it's like pushing a 1000 pound piano up a hill –
the moment you stop, everything wants to go back the way it came.
Everything from the final boat design (not Rick – he's been
fantastic), to contracting a boat builder, to finding a sponsor, to
finding a support boat – everything immediately stalls the very
instant it exits my consciousness. I'm so tired of constantly pushing.
I feel like I just want to coast for a bit, or at least be able to
rely on some help from others in some way.

I'm not blaming anyone, as this is the sort of thing that naturally
happens when you are a one-man show – even when you are PAYING for it!
As an example, I sent about a half dozen request for bids to boat
builders for building the new Ocean WiTHiN, and not one builder was
interested. I have a sneaking suspition that I may need to build it
myself, and I REALLY do NOT want to commit to the kind of shop time
that is going to require! At least, not now. The final designs are
weeks – no, make that MONTHS overdue, volunteers who offered to help
with some aspect of the expedition inevitably lose interest and their
contribution slowly trickles to a stop. The thing is, I TOTALLY don't
blame any of them. If I was doing something for free, I would
eventually lose interest also.

When I was trading futures, I used to have a sign posted on the top of
my computer monitor that read "It's all my own fault!". I lived by
that, and still do (well, I try to anyhow). I know that I won't solve
anything by blaming someone else for my problems. I created the
problems myself by creating the environment that the problems grew in.
Robert Anthony said "When you blame others, you give up your power to
change."

I think one of the issues that contributes to my frustration of late
is that I've been feeling very issolated, and I'm tired of the one-man
show thing. My various projects are not a business, so I can't justify
hiring a staff, so I'm in it totally alone. I love the fact that all
you out are supporting me by following the blog and contributing your
input to my various trials and tribulations – that means SO much to
me. And, I do have many, many friends who have freely given of their
time and expertice just to be involved in what I am trying to
accomplish. This makes me feel somewhat justified, but sometimes it's
not enough. For the most part, the world will basically remain
unchanged weather I do or don't set a new distance record, qualify or
not for Kona again, or cross the Atlantic ocean by human power slower
or faster than a rower. I would love nothing more than to work with a
team – be part of a real community – who all share the same passion
for human power and what 'we' are trying to accomplish. That is why I
enjoy Ironman triathlon so much – I enjoy training with friends and to
be involved with a comminuty who all share the same basic goals
regarding making through one of the toughest races in the world.

When I think about what most I would like to be doing with my life
right now, what I envision is very symptomatic of how I am feeling
these days regarding the stress I'm under with PTO expedition
planning. I would THRILL at the prospect of doing RAAM! – The Race
Across America is a bike race across the continental US and the
thought of doing it someday gets my heart pounding like it used to
when I first concieved of the human powered Atlantic crossing.
Something else that revs me up is the thought of doing Ultraman – a 3
day stage ultra Ironman (10 km swim, 421 km bike, and DOUBLE
marathon!) I am looking forward to our vacations this summer – a
kayaking tour with friends on Vancouver Island and a possible bike,
kayak or sailing trip in North Carolina with Helen. I am really
looking forward to getting into my Ironman training again and getting
ready for Ironman Arizona in November where I will attempt to qualify
for Kona again. None of these activities involve anything to do with
my shop, begging someone else to do something for me for free or as
little money as I can talk them into, or dozens upon dozens of
unknowns that all will inevitably be learned the hard way. All of
these activities involve other people, and being physically active in
the great outdoors.

I'm also looking forward to training for and attempting to break
Carter Johnson's kayaking record assuming we find and fix the problems
with the boat (and my Achilles tendonitis). I have fond memories of
spending entire days on the lake training for last years attempt and I
am really looking forward to doing that again this year. But this time
around, I don't want to rush my training like I did last June. I am
really looking forward to exploring some of the mountain lakes with
kayaking friends this summer and possibly making an attempt at the
distance record late summer or early fall.

As I wrote in the first paragraph, I've decided to put PTO on the back
burner for a little while, and strategize a way to make the expedition
a team effort rather than a solo project. I think the best place to
start is with an introspective on what it is exactly that I want to
get out of the expedition, what it is that I enjoy doing, and what I'm
good at – that is, what aspects of managing the project am I able to
contribute the most.

What do I want out of Pedal The Ocean?

I think to start with, I need to take a closer look at one of my
long-term goals: To speak. I am passionate about sharing with others
the lessons that I have learned throughout my unique life. Public
speaking is something that I have always feared, but something that I
have recieved immense satisfaction from. In a way, this goal is an
extension of our KidPower school presentations, but greatly expanded
to encompass a wide audience range. My long term goal is to eventually
build up enough interesting and compelling accomplishments and
experiences to weave together a book and a powerful speaking program.
In following with my quest to "Conquer the world by human power",
pedaling across an ocean just seems like a pretty cool thing to do,
and would make for a very powerful base for a presentation.

As some of you may know, I spent many years researching a phenomenom
that all of you rely on in your daily lives to some extent, but few of
you would ever admit to actually 'believing' in. I'm talking about
anomalous cognition which is otherwise know as "intuitive
functioning". This is the basis of my belief in the true power of
HUMAN POWER in ALL of it's forms – mental and physical. You have the
power to accomplish ANYTHING you set your mind to and I think I have
amassed some pretty convincing evidence that this is goes way beyond
simply finishing a marathon run. Accomplishment of course, is more
than physical – there is a substantial MENTAL component involved. I
used soley my mind to break all the odds and make $150,000 in the
futures markets with an 80% trade success rate. Not only is this
success rate unheard of in the futures trading industry where over 90%
of all futures traders loose 100% of their capital, I did it without
ever even knowing what market I was trading – my trading decisions
were based on results from a computer application involving TONS of
statistics and dozens of hours of mentation, and trades were initiated
electronically without my knowledge of the details.

The intermediate term goals that need to be accomplished first are:

1. Human powered world records. This is where I employ cutting edge
technology combined with human power to set new benchmarks for human
power compared with what has been achieved in the past using
traditional means. I want to set records on land (Critical Power 24
hour – done), water (maybe this summer), and in the air (sometime in
the future).
2. Significant human powered distance achievements. This is where
PedalTheOcean comes in, as does possibly something like RAAM where I
would endevour to re-visit my original cross-Canada human powered
record attempt by competing in the RAAM recumbent division.

What do I want to do, what am I good at, what do I NOT want to do?

1. I want to train, I want to compete, I want to challenge myself both
mentally and physically. I like envisioning challenging new projects
and seeing them through. As an embassador for human power, I thrive on
the challenge of encouraging people to become active. With obesity
levels at an all time high, and health care costs rising through the
roof, one of the solutions is physical activity. My various projects
generate interest in what can be accomplished using human power. I
want to insipre others to follow my example and witness for themselves
the powerful effect being physically active can have on their lives.

2. Note that the above paragraph says nothing about shop work. I do
enjoy being in the shop when the work is being creative – when I am
prototyping a new idea or experimenting with some new concepts.

3. I also enjoy the management and leadership, but I think that
esspecially when it comes to PTO, I can't continue to do it all on my
own. I need help in this area.

CONCLUSION

I guess this is the conclusion I have arrived at after thinking this
through, and putting it all down in pixels.

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