Hey, rickhigginshtbr (an alias if I ever heard one)
If I'm reading your last post correctly, your CVT (continuously variable transmission) isn't working properly. I just took a closer look at your picture, and I think there are indeed two variable (Reeves) pulleys. The motor should not move when you move the speed control arm. Instead, it pulls both the middle sets of pulleys forward. This works against the springs in the center sections of the pulleys, forcing the motor belt deeper into the groove of the back Reeves pulley, which in turn forces the middle belt higher in its groove, which forces the middle belt deeper into the forward Reeves pulley, and the spindle belt higher in its groove in the forward Reeves pulley. That gives the higest speed, since the motor drives the smallest diameter.
Moving the speed control back to the slowest position allows the springs in the Reeves pulleys to take over, moving the center section back to where the motor is driving the largest diameter. Since there is a reciprocal relationship between the diameters, the overall distance between the motor and spindle doesn't change. Neither does the distance between the two Reeves pulleys-you can see they're tied together by the adjuster strut. All that changes is the position of the Reeves pulley pair between the motor and spindle.
Lock down the motor and try the VariSlo again. Unless they're frozen, you'll see the centers of the Reeves pulleys move up and down as you move the speed control. If they don't move, you've got some teardown/clean/lube to do
.
Clearly, that's too much work for you. Just set it out on the driveway and I'll get U-Ship to come pick it up and end your nightmare!
Somewhere in here - probably Fabrication - there's a long and fascinating thread on machining new CVT pulleys for a Bridgeport mill.
edit: Oops, now that I think about it, it's a bandsaw - a big Powermatic, maybe. Couldn't find it with a quick search.
Here it is!!: Building a new Do-All band saw variable drive
by: a_pmech
At least I got the forum right on the first guess - it is in Fabrication and Techniques.