Mounting motor under table?

[Rogue]

Just to prove how slowly my brain works... by 1/2 wide do you mean I need to accomodate a diameter of 1/2", or it will protrude 1/2"(+bit sticking out for setscrew) from the mount?

[Jonathan]

I meant the width of the timing belt should be at least 1/2". You can calculate it ... but that works fine for me so etc.

I would want the shaft to stick out as far as you can get it to as it depends on the pulley, where the setscrews are and the position of the other pulley.