Originally Posted by
plonz
What I can say for certain from my own experience with using multiple wheelsets on the same bike, is that a 500g weight savings has produced noticeably livelier acceleration. The guys I ride with all share this same experience.
Even using best case and rotating weight the provable effect is still negligible - perhaps .5%. I'm not arguing with your experience, merely saying that without a science based reason to validate it the only conclusion I can reach it that it's mostly psychological.