Jay,
Thanks for putting that together and posting that. I have looked for but not been able to find how that exact setup works. I have seen a later setup that uses two intermediate pulleys between the motor and the quill but I have not find any documentation of it.
I glad that you were able...
There must be plenty of these DP's available because I have one too. I am pricing components to slow mine down but have not compromised on price vs cool factor yet. What do you have envisioned for $30?