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Neil,
I would agree 3 wheelers can be well done or poorly done but that goes for 4 wheeled cars also as we have plenty of them on the road these days to prove it! You seem to think 3 wheelers have inherent compromised stability. I would agree with this in the respect of a front wheeled 3 wheeler but not so for a single rear wheel. I still disagree on the rolling resistance point but we can agree to disagree.
So we are not that much different in our views really I just place priority a little different but we have the same components.
For me it would look like this:
#1. Total vehicle weight
#2. Aero
#3. Rolling resistance
#4. Drivetrain Efficiency
All of these components matter but weight effects it the most in my opinion. Once you have completed your build its hard to take weight off. So its better to design for weight reduction from the very start. Aero can be tweaked with a finished vehicle but why not incorporate it from the get go.
Good points though Neil I am enjoying our discussion,
GreenHornet :-)
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