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Old 01-03-2008, 09:07 PM   #13 (permalink)
Lazarus
ECO-Evolution
 
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Join Date: Nov 2007
Location: Central Texas
Posts: 1,482

Iron Horse (retired) - '97 Iron horse Intrepid

Ninja - '08 Kawasaki 250R
90 day: 76.23 mpg (US)
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Quote:
Originally Posted by AndrewJ View Post
Ok, thats at least a good starting point, I was sure it had to be a road bike by the 17mph average speed, but hey, who knows, you could have been Lance Armstrong on a DH bike or something.

Anyway, if you're trying to get faster, keep in mind that the aerodynamics of bikes is a bit different than cars. Namely, the "tipping point" where aerodynamics become an important factor is around 20mph (or so I have heard from multiple sources)
It seems that once you pass 20mph on a bike, over 50% of your energy is going to combat aerodynamic drag, and it just goes up from there. I think the source for that tidbit is the League of American Bicyclists' "Road I" course, but I could be wrong.

So, the key to making a battery last longer might be aeromodding your bike. Look into time trial stuff for your bike. Most of it is expensive, and somewhat heavy, but an aerobar wouldn't cost much, and getting into a more aerodynamic tuck would be hugely helpful.
Good points. I've tried the aero bars and it a little to dangerous for city commuting. Quick access to brakes is a common reality, also control and visibility are a little marginal when dealing with cars and road debris. I've thought about a fairing of some sort like a motorcycle but I think the increase in drag would offset the aero benefits for a standard bicycle.
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