Pulley size

[eddiebunyan 24]

Got a friend of mine with a 75 C-100 8spd.He wants to know if he puts a pulley that is half the diameter as the original,on the transaxle and a shorter belt,will it go twice as fast or at least faster??Anyone ever try that?

[daveoman1966 3,762]

This link will answer your Q.   Clik the BELT-PULLEY-SPEED hi-lite.  https://www.blocklayer.com/pulley-belteng.aspx

[Ed Kennell 38,687]

Yes, reducing the pulley diameter by 1/2 will double the ground speed.    Be aware the belt guard supports the belt allowing the belt to declutch.  With a smaller pulley, the belt may not be supported properly causing the belt to continue turning resulting in gear shifting problems.

 

Edited April 22, 2018 by Ed Kennell