Just an update for you Roger.
The surplus 2hp DC motor and that controller run great together.
Just wired it up last night. I mounted the controller board and all the switches inside a PC power supply case, fit just fine. Wow is this gonna be great. My grinder isn't here yet :grumpy: so I can't attest to the power, but using friction I couldn't slow it down even at slow speed.
RE the open motor: Bruce Evans has one he's been using for 3 years. Sure, a closed motor would be better, but if HE can get by with it I'm sure I can.
BTW before you buy your AC motor and pulleys here's what I think are the advantages:
Complete smooth speed control from 0-3600
Double shaft motor means I can mount a buffer wheel or disc on the other side and have a variable speed 2hp buffer
and the one thing I really wanted --- reversable
Total package price? $230
Oh yeah, one other thing I'm probably going to do. Now that I have the controller, and the motors are only $40, I'll probably get another motor for a horizontal sanding disk.
Hope that information helps your decision process.
Steve
The surplus 2hp DC motor and that controller run great together.
Just wired it up last night. I mounted the controller board and all the switches inside a PC power supply case, fit just fine. Wow is this gonna be great. My grinder isn't here yet :grumpy: so I can't attest to the power, but using friction I couldn't slow it down even at slow speed.
RE the open motor: Bruce Evans has one he's been using for 3 years. Sure, a closed motor would be better, but if HE can get by with it I'm sure I can.
BTW before you buy your AC motor and pulleys here's what I think are the advantages:
Complete smooth speed control from 0-3600
Double shaft motor means I can mount a buffer wheel or disc on the other side and have a variable speed 2hp buffer
and the one thing I really wanted --- reversable
Total package price? $230
Oh yeah, one other thing I'm probably going to do. Now that I have the controller, and the motors are only $40, I'll probably get another motor for a horizontal sanding disk.
Hope that information helps your decision process.
Steve