Federal Siren Motor

Poor Farmer 830 · Jul 29, 2011

I have a Federal Model 5 Siren, I recently tore it all apart and had the commutator turned on a lathe, the brushes and springs are both in great shape, i cleaned the insulators out in between each slat on the commutator, The siren works great I was just a little curious it seems to spark still at the brushes i read the manual and seated the brushes exactly like it explained but was curious if the sparking was natural or if there is something i could do before i put it back up on the fire house.

Anonymous-0 · Jul 29, 2011

It could be normal to have some sparks. Ever looked inside a drill or circular saw when it's running. You'll see sparks.

Absent Minded Farmer · Jul 29, 2011

If there's a little blue spark by the brushes, that's ok. Especially if they have to wear in a bit to match the contour of the commutator. It would be neat to see a photo of it when it's all done. I'd like to get a 7T one of these days.

Mike

teddy52food · Jul 29, 2011

The spark comes from the collapse of the magnetic field when it breaks the circuit.

Poor Farmer 830 · Jul 29, 2011

I will definitely post pictures of the siren once its done thanks for the input i figured it wasn't anything major but wanted to make sure before i mounted it back up on the fire house
Thanks Again

Federal Siren Motor

Poor Farmer 830

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Anonymous-0

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Absent Minded Farmer

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teddy52food

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Poor Farmer 830

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