Originally Posted by
Dave Horne
My present bike is 3 kg lighter than my previous bike.
I notice that I accelerate faster, my overall speed is greater, and I can bike longer distances easier.
Comparing apples with apples, you can throw a lighter apple further with less effort.
Do we really need to have such a long thread on this?
In addition to the points cplager made, I have to tell you that - unless you are EXTREMELY weak or are hurling Mutant Fruit - you'll throw a heavier apple further. (It will have a smaller surface area relative to mass and therefore air resistance will have a less rapid effect - this is why you can throw a coconut further than a raspberry.)
Also: you don't "notice" that you are accelerating faster. What you mean is that you THINK you are accelerating faster. There's a decent article by Keith Bontrager on subjective impressions on speed and acceleration in testing bicycles and motorbikes; Bontrager's experience is that even experienced professionals usually got this wrong.