Treadmill motor on Shoptask 3in 1 lathe

I was given a Sears' Lifestyler 1400 treadmill. I wanted to get lower speeds from the lathe. I previously install the low speed idle pulley set on my Shoptask. However it is not very easy to change back and forth. I replaced the lathe motor with the direct current motor and controls from the thread I was able to use one of the idle pulleys on the DC motor. The pulleys with the bronze bushing removed, has a 5/8 inch bore and key way, the same sizes as the DC motor. I only needed to buy a setscrew for the pulley. Two of the treadmill motor mounts holes line up with the AC lathe motor mounting plate. A DPDT toggle switch is added to the control panel to reverse the spindle. The order on the webpage left to right: Overview, motor, pulley and front of motor and modifies control panel. The speed indicator reads in tenth of mile and is controlled by a magnet pickup. I am looking into a conversion formula and mounting the magnet someplace on the spindle for RPM readout. Pictures are on my WebPages at