It's a Consew 225, with the stock clutch motor. I put a 1" pulley on the motor and a 10" pulley on the machine. It gets the machine down to 175 rpms from my calcs. Which is definatly slow enough (for anyone else searching for this), but would like to get it even slower. 10" is about the limit for my table, there is very little rubbing on the table from the belt, which I had to grind the table down about 1/4" to eliminate the rubbing.
I'm thinking a servo motor is the way to go, just wasn't planning on spending that much, but it's looking like it might be worth it.
The 10" pulley does allow me to sew by hand just taking the belt off and spinning the wheel with my finger. I don't mind doing this for small passes, but anything longer then about 24" and you start to feel it.
Thanks for the input!