Balancing wheels on the bike

[Bibio]

i can't tell you any scientific explanation as i'm not a guru. but they do work. i have resisted telling people as i knew i would get 'its a load of bull' yada yada.

ok so its not the cheapest way of doing it as it works out to about £2 a wheel but the convenience outweighs. i suppose if i was a tight wad i could re-use them.

i found this on youtube which sorta explains the effect.

http://www.youtube.com/watch?v=eq263...eature=related

Originally Posted by yorkie_chris

That's a car wheel though

That's what I said!

Originally Posted by yorkie_chris

dynamic balancing (2 plane or more) lets you balance any "rocking" imbalance which static balance doesn't show.

I know!



Narrow bike wheels are not as likely to suffer from that type of imbalance, at least not to the extent it causes the rider a problem.

Originally Posted by yorkie_chris

What's to make them collect at the light spot? I can't think of any physical reason.

I'm not going to hurt my brain trying to figure out the physics of it. But if you spun a shaft with two rotor blades on it, and there is enough friction between the blade and the shaft for them to start spinning too, but they are still free to rotate on the shaft.

Then and put an equal weight on one end of each rotor blade, and spun the shaft, would the blades not start to spin on the shaft in equilibrium with the two weights staying opposite each other? It's the least resistance way for them to spin.

Are these balancing weights not just doing the same? They are free to move so they naturally find the place in the wheel and come to rest where they need to move the least?