Quote:
Originally Posted by cfguy2000
It seems to me that the effects of wind drag would be more dramatic on a vehicle trying to go uphill. I think extremely slow in a lower gear would give the engine a better mechanical advantage, but you would have to go pretty slow.
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I can see no reason why aerodynamic drag would be more severe just because one is going up hill.
Mechanical advantage does not imply better use of energy (efficiency). On what principle of physics would going as slow as possible up a hill be the most efficient?
As far as I know, the only significant downside to driving fast is aero drag (assuming an engine at optimal rpm and throttle setting).