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Thankyou everyone! Great information. I think I've got enough of a handle now to move forward. I talked it over with Vlad (a mad Russian Academy of Sciences scientist/friend) who has set up lots of

What is a "motor heater"? Why is a heater needed in a situation where the motor tends to overload thermally?

“So maybe 1 second before the control circuit cuts the power. Is that too long a time to wait?” You need two time delays. The first disables the stall protection until the motor gets up to speed.

"You COULD however use a 555 Timer, configured as a one shot, triggered by your sensor, feeding a solid state relay." A switch and timer will work. It will need to be reset at some point. It will not

"So maybe 1 second before the control circuit cuts the power. Is that too long a time to wait?" There is an additional consideration. How long does the motor take to come up to a speed above your

A three-phase motor overload will not properly protect a single-phase motor if you use only one pole. The overload units are calibrated for current in all three poles. You can use it if you daisy

Chris wrote “I have yet to purchase a 4x6 bandsaw (harbor freight) and all this talk about overheating and burning up motors is making me question if I should buy one.” Do you LIKE hacksawing

John Wrote "Most of these small motor only have a thermal switch embedded in the motor windings. If the windings get too hot the switch opens the circuit to the motor. The problem with the thermal

Agree that NEMA motor starters, bought new, have gotten absurdly expensive. Even the little toggle-switch style. But they are pretty easily scrounged. (You have to expect to buy heaters to suit the

"is there any way that a 'NEMA motor starter with properly selected heater ' can be retrofitted to our 1/3 or 1/2 HP motors? " Yes, you can buy a brand new Nema size 00 Motor starter for single phase

John, ??? ??? ??? I hate to sound like a broken record here, but the simple time delay fuse solution can be a very effective method of providing motor overload protection for motors that

If all you need is to cut off below a certain rotation speed, you could use a simple LM555 circuit driving a relay.? You would want to use a tiny bit of dual edge detection so no matter if the sensor

This seems to be getting a bit off topic (well the one we hijacked it too, of motor protection, anyway). Jerry is looking for something to protect the motor against stalls, detect broken blades and

I bought a blade at Lowes for my saw , it's a Bosch , don't remember the teeth count but it's eatin everything I throw at it nicely . think it was @ $13.00 ??? ??? animal

For what it is worth, I have had a Harbor Freight 4x6 for about 3 years. I have cut a lot of steel, brass and aluminum with no problems at all. I'm still on the original blade. I run it on the slowest

second thing to do is open the gear box & check for oil . these are things to do with any 4x6 ya buy ??? ??? animal

One thing I'd be sure of, when you receive it verify that the arm goes straight up and down.? Occasionaly they'll ship one where the hinge holes are off.? This is VERY hard to fix by yourself, best

the saws are pretty ok , but like anything from HF "if it plugs in yer gonna have problems at sometime " motors are pretty easy to come by ??? ??? animal

I have a Buffalo that is 37 years old and has sawn tons of material. Using Lennox Bi-M metal blades it still cuts fast and true. It still has the original motor which says it is 3/4HP on the label but

Don't let it worry you . I did burn up a motor on mine , but it was my own fault . One should no more leave a saw cutting unattended than one should walk away from a lathe making a cut . I knew my