I have been thinking through an ultra-lightweight project and I think the aero has a much greater effect than you are implying here. In fact you can get substantial improvements over an unfaired chassis even at bicycle speeds. Just try riding your bike into a headwind for example.
Trying to figure out which body work is better is much much harder, and may require experimentation or very sophisticated CFD software. Its way beyond me at any rate. I figure if you can get 80% there by copying known successful designs, thats good enough for a low-budget project. The electrathon designs are proven, for example. Now for two-wheels, I think its very different. You can get in real trouble trying a so-called dustbin fairing. I'd probably go with a race fairing and close up the holes. Bikes just have terrible aerodynamics. try these calculators for a rough idea of the advantages http://www.geocities.com/hempev/EVCalculator.html?200629 http://www.evconvert.com/tools/evcalc/ http://www.kreuzotter.de/english/espeed.htm HTH John damon henry wrote: > It seems to me the changes should be proportional. ....
