Hello Bassthumper, thank you for the insight regarding the motor and it's RPM with different pulleys. I have two 4" 3 groove pulleys I planned to use with the Leeson motor, but if I will not be able to use the Leeson to achieve the lower speeds, I will replace this motor with the appropriate RPM Leeson motor with the same footprint. The bearings I am using in the tracking and contact wheelos are the NTN high friction .500 ID bearings.
I also apologize for not supplying the link to the Mobi-Dick belt grinder I am using as a base for my own grinders. This configuration will work very well for my application. I have not found any plans for the Mobi-Dick, but I am only using it as a guide and have made several modifications on my own grinders.
MOBI-DICK belt grinder link:
http://www.youtube.com/watch?v=lRUCHNZMwuQ