silverboy

Hi all,

I just saw a thread by RonCT on the benefits of rotational weight vs static and the equivalent of BHP gain.

In summary his findings were:

for every 1 lb saved from your wheel = 5 lb saved in static weight. And for every 120 lbs saved in static weight = 17 BHP gain.

Anyway, I just did a bit of investigating and this link sort of shows that for every 1 lb saved from your wheel = 10 lbs saved in static weight.

http://www.the-welters.com/racing/rotational.html

Being a avid road cyclist I know the first hand benefits of a lighter wheelset on a bike and it's huge.

Anyway, just wanted to share and find out other opinions from the rest of the crew on the discrepancy above.

Peace.

LehmanZ06

I think it's nowhere near that much.

Maybe 1 lb on wheel = 2 to 3 lbs at most.

The reason it's so noticeable on the bike is because you have NO horsepower.....like 1/3 of a hp for a limited duration.

Salespunk

Funny, I have always heard 8 lbs so right in the middle of the other two. It really depends on how far the weight is from the center of rotation. There is not going to be an exact number that you can rely on.

SpeedGeek

It also depends a lot on which gear you're in. The effect is much greater in lower gears than higher.