primary roller diameter?

[SRXtreme]

Does anybody know how much roller diameter effects rpm? For example say .5 will change rpm by "x" amount.....................SRXtreme

 

[s10mike]

on my sled going from a 16mm to a 14.5mm dropped my ingagment from 38-3900rpms to 33-3400rpms

 

[yamahamark]

How much does inner diameter affect rpm like going from 9mm to 8mm?

 

[Throttle Junkie35]

How much does inner diameter affect rpm like going from 9mm to 8mm?

You mean the roller pin size??

 

[yamahamark]

Yes I mean the roller pin size.
The rollers in my 97 are a little wore and I bought some 88r rollers dirt cheap and was wondering how much it would change. Rollers are the same outer but different pin sizes.

 

[mrviper700]

the inner axle size has zero bearing on rpm change, it was changed for better durability. The outer diameter is what changes the rpm and weight force.

 

[SRXtreme]

on my sled going from a 16mm to a 14.5mm dropped my ingagment from 38-3900rpms to 33-3400rpms

Thanks, I will try some 15.6 and see what it does for me..................SRXtreme