what is a gear called that will free wheel

[diver]

Im trying to search out a sprocket that will free wheel when power is off. I want to put one on my etec motor if there is such a thing. Do any of you guys know what its called so i can seach for one
thanks again

 

[vanilla ice]

A one way bearing might work but you will probably need a spacer to get the OD and ID right for the shaft and sprocket. The ones I've seen come in standardized sizes, like 1/2" ID and 3/4" OD, etc. I'm unsure on max power and tolerances needed.

 

[TylerDurden]

http://en.wikipedia.org/wiki/Sprag

 

[diver]

aw sprag is what i needed to know. thanks again guys