I have an old(70"s or 80"s) craftsman table saw(it was given to me and told it ran fine).Heavy cast iron top, direct drive 11.5 amp. The motor won't start on it's own. It hums and sometimes tries to turn left and sometimes right. If I spin the blade it will run slowly and get hot. If I get it spinning enough it will pick up speed and finally kick into high speed. Once there it runs good and cuts fine. It is not a capcitor start. The switch box has a switch and a relay inside. The relay has 3 terminals. 1 on the bottom and 2 on the top. The motor has 3 wires. 1 black,1 white and 1 red. It is wired,black from power cord to the switch, black jumper from switch to single connector on relay, white directly to white from motor, black and red from motor to the 2 other relay termials. The relay shuts the saw down if tipped. The rotor has no exposed windings. It looks like a smooth barrel. I can find any switches inside the motor. Motor seems to have 2 different windings inside. I'm running this saw in a detached garage with 14 guage wire running to the plug. It is not a dedicated circuit. Although my belt drive capacitor start saw runs perfect on the same plug. Any help will be appreciated. Thanks.