Whats the different between 172mm and 180mm pulleys
you can find a lot on this subject by using the search function. you will also find a naive table showing a supposed relation between pulley dia and HP increase

about two years ago the question was deeply discussed and the consensus, at that time, was for a pulley close to 170mm as the best option .
...today it's moving forward
btw,
Last edited by has123; Apr 7, 2010 at 03:33 PM.







