Power strips have a 15 Amp circuit breaker. The 1 1/8 HP motor requires 18-20 Amps when first starting. If an extension cord is used, it must be 12 ga and no longer than 25 ft. An longer needs heavier cable. You really need a dedicated 20 Amp circuit for the Shopsmith. When quiting for the day, you can move the speed control to SLOW to reduce the starting load for the next days use.
When you flip the switch, does the motor hum. If not, then you have a switch or power problem. I find I have to use 20 AMP or higher rated switch for the Shopsmith. The 15 Amp rated switch can fail over time.
If the motor hums but not starting, then it is the start winding relay contact points or the capacitor that needs to be checked. You will need to remove the motor from the Shopsmith to do those checks.
Ron309753 wrote:I inherited a Shopsmith (SN: 309753) from my Father-in-Law. It had been sitting my garage for 18 months when I decided to clean the garage. I knew it wasn't working so I decided to check it out to see if I could get it to go. The problem turned out to be the power switch. I got a new one at the Home Depot, but they only had one in stock and the packaging had beem stapled back together. I hate it when they do that. I also had to repair the speed control. I have everthing back together now, but I am having a problem. The motor will quit at any speed and not want to turn back on. I have to flick the switch numerous times to get it go. I checked the motor and it wan't hot, and when I tried it this morning with a cold motor it did the same thing. Since the quill and auxillary spindles turn freely, and nothing seems to be binding up, I am thinking that I have an electrical problem, not a mechanical one. I also noticed that when I had it plugged in to power strip, it would trip the power strip circuit breaker every time I turned it on. I was wondering if there is some kind of transformer or something on the motor that is faulty, or if I have a bad switch (someone's reject), or if the motor is pulling too many amps.