Hello, I am trying to help out my father in law who is a home builder and avid woodworker. He has a Rigid table saw that is around 12 years old. It is set up for 120v and has a direct drive motor though I am not sure of the HP. I believe the rpms are around 3400. His complaint is that it lacks power when ripping anything of any size. He is getting ready to run a bunch of Red Oak and is thinking about buying another saw. Is there anything that he can do to improve the performance of the saw he has? Will changing it over to 240v help. He is under the impression that he needs more rpms but from what I am reading that will reduce torque and possibly make it rip worse. Any Ideas and advice would be appreciated. Thank you in advance.