Originally Posted by
noimagination
(Note: it's true that you're constantly "accelerating" even when you're riding at a constant rate of speed in the sense that you are counteracting the effects of air resistance and friction, but if that type of "acceleration" is affected by bike weight at all, the effect is small.)
Just to clarify for anyone interested in real physics, this is NOT “accelerating” in any meaningful sense. You are applying a force opposing air resistance and friction, but at a constant speed the net force and therefore acceleration is zero.