Thread: testing with ohm meter

Im interestes in learning how to rewind the arms, any basic suggestions for someone who's never done it before ? Also "balance" an arm ???

Quote: Originally Posted by WesJY does anyone know how to test the ohm on tyco 440x2 armature? Wes It's essentially the same principle, it's just that the poles are so much tinier. You will notice there's 3 of them, just do it the same way you would with a pancake arm, just find something REALLY steady to hold it with.

Getting accurate readings on an arm is not as easy as it sounds. Keep in mind that in order to get accurate readings, you will need something more than the garden variety Radio Shack DMM. You need something that will measure 0.1 ohms with at least some degree of accuracy.

If there is a build up of oxidation, oil, etc. it could prevent an accurate reading. A clean arm is a happy arm. nd

I just flip an old chasis over and put the arm (upside down) in the arm hole of the upside down Chasis, holds them pretty good. I check them the way Marty31 does, on the soder of the pole, to many fluctuations when you check on the face. use a basic Ohm meter, fancy AutoRanging meters have been stumped (in my exp.). Like Marty, I have some arms that are in the 20's, and they rip with stock mags, they are dogs with JL Mags, I think...

Quote: Originally Posted by tjd241 If there is a build up of oxidation, oil, etc. it could prevent an accurate reading. A clean arm is a happy arm. nd Dats how ya do it. 1-2-3 go! Nuther Daves little picture sez it all.

I'm in the camp of the "magnet/arm combination is important". I've got a few gold wire/red tip arms that don't "ohm out" as anything special yet they scream pretty nicely with the magnets they're mated with. Got lucky on those.

Quote: Originally Posted by Ligier Runner I'm in the camp of the "magnet/arm combination is important". I've got a few gold wire/red tip arms that don't "ohm out" as anything special yet they scream pretty nicely with the magnets they're mated with. Got lucky on those. I have to agree, I dont think OHMing an arm is the most important thing, some of mine that OHM different from pole to...

Testing the balance of an arm is just as important as checking for low ohm's.

Testing the balance of an arm is just as important as checking for low ohm's.