Hi,
I have a large wattage uniquely sized (round) resistor that needs to be rebuilt. I know that it is 180 ohms center tapped, and it's unubtanium and made to fit in a tight area. I removed some if the covering with a wire wheel and the wire is indeed broken in several places.
Does anyone know where I can find replacement wire and what kind of coating us on this thing? I believe its 300 watts.
Thanks,
Jeff
I have a large wattage uniquely sized (round) resistor that needs to be rebuilt. I know that it is 180 ohms center tapped, and it's unubtanium and made to fit in a tight area. I removed some if the covering with a wire wheel and the wire is indeed broken in several places.
Does anyone know where I can find replacement wire and what kind of coating us on this thing? I believe its 300 watts.
Thanks,
Jeff
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that looks like a vitreous enamel resistor, Ohmite are a maker though no circular ones now apart from Rheostats.
I think this will be nichrome wire (nickel chromium resistance wire)
alan
I think this will be nichrome wire (nickel chromium resistance wire)
alan
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Buy another 180-200 ohm and unwind it...you will not be able to re-use the wire on the one you have...or at least half of it.
Then find a pottery class and ask if you can enamel and fire your repaired resistor.
🙂
Then find a pottery class and ask if you can enamel and fire your repaired resistor.
🙂
Thanks for the advice, the coating seems to not be hard. I took a wire wheel and it seemed to come right off. I was thinking about trying to silver solder a piece of toaster wire between the couple of turns and see how close it was.
Some thoughts:
It almost looks like the element part of a rheostat, like they removed the wiper assembly.
What does it do? Is there a compelling reason a replacement could not be mounted remotely with three wires run to this space?
It almost looks like the element part of a rheostat, like they removed the wiper assembly.
What does it do? Is there a compelling reason a replacement could not be mounted remotely with three wires run to this space?
If you have the capability to do that then it is a good idea...you could still use wire from another wirewound resistor...it may match the size better.
I ran slot cars for a few years.
We wound our own controller resistors.
I used car exhaust sealer for as a very heat resistant adhesive. Never had a failure.
We wound our own controller resistors.
I used car exhaust sealer for as a very heat resistant adhesive. Never had a failure.
It's actually for my wife's kitchenaid mixer. I am going to run to the surplus store tomorrow and see if there is a resistor that it can use to scavenge the wire from.
I had a hard time getting her to let me paint it candy apple red, now it has to look and work like new!
I had a hard time getting her to let me paint it candy apple red, now it has to look and work like new!
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