- Joined
- Apr 8, 2013
- Messages
- 1,982
The next item on my to do list is to install a VFD on my RF30 knock off mill. In the You tube videos I've watched on the subject the stepped pulleys were replaced with single pulleys. I don't really get this. I can understand that the idea of the VFD is to make belt changes unnecessary but the step pulley arrangement does increase the speed range available even with the VFD and as far as I can tell, doesn't do any harm. My mill currently has a speed range of 120 to 2500 rpm. Leaving the stock pulleys along with the VFD I could easily get 30 to 5000 rpm on my machine without stressing the motor. Why would I spend money to lose that capability? Why not just pick a middle of the road belt and leave it there while keeping other speed options open? Is there a down side?