Originally Posted by
RubeRad
Also I somebody else (maybe you?) said before something about, sure there are micro-accelerations every pedal stroke, and sure, lighter bikes will micro-accelerate easier and heavier bikes will take more effort to micro-accelerate, but heavier bikes (+loads) maintain more momentum through while pushing through the same air resistance, so heavier bikes need less micro-acceleration....
That was me who brought it up, and I theorized that his feeling that it was harder would be due to accumulated fatigue from heavier power strokes, along with the other accelerations.
It could be that just having a different power stroke is fatiguing in itself, if you have trained extensively and are used to different mechanics. On a long flat time trial I suspect it would be beneficial to have heavy wheels, for the reason you mention.