- Joined
- Sep 28, 2013
- Messages
- 4,403
very neat, that's a beautiful old saw. Great idea to use a treadmill motor and I don't think you'll have any problem with swarf - none of the ones on my lathe did and there were whole drifts of swarf back there occasionally. One thing to consider though is a jack shaft to lower the speed of the saw drive wheel. Treadmill motors are way fast, so do some calculations to see what speeds you'll get with a single belt off the motor and what size pulley you'll need on the drive wheel. If that won't get you low enough, you'll need a jack shaft. Eg. on my lathe I have a 3:1 reduction from motor to countershaft, then 1:2, 1:1 and 3:1 ratios to the spindle pulley. That gets me a low low speed of 100rpm and a high speed higher than I'd want to run (3000rpm plus).