chapmanruss wrote:The Speed Increaser doubles the speed but I would wonder if it could handle 20,000 RPM output. I still have my Speed Increaser but I am reluctant to try. I guess slowly increasing the speed to test it out would be the best way to try.
This setup would also allow for under-table horizontal routing.
The speed increaser is limited to 10K rpm. While it might work at some point above that you may also expect it to fail a lot sooner. Going to 20K rpm will most certainly kill it quickly.
Keep in mind smaller bits can run upwards of 30K rpm larger bits will require much slower rpm. How ever slow on routers can still be in the 12K range, still faster then the shopsmith.
I don't do too much with the shopsmith as a router, in my opinion get a real router for most projects and you will be glad you did. While you can use the shopsmith as a router you have to work a lot slower to make up for the lack of rpm.
I feel powerpro would have been better off with a slower bottom end and slower top end. Maybe 100 rpm to 8K rpm but that is not what they decided to do.