I think we've all owned a tool or two that seems to be Satan spawn! I had a belt sander once that had a habit of getting too much wood off too fast. The damb thing would practically rip your arms off on contact. Bought a more expensive one that has always worked great. I think the original had too much rpms like yours! Mine was a hand belt sander. In the mid west I hear they actually have sander races!:HMMM::D