Author Topic: Cleaning dynamo commutator  (Read 533 times)

Offline a101960

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Cleaning dynamo commutator
« on: 22.05. 2017 10:52 »
I thought that I would do a spot of dynamo maintenance. I remember reading once that lighter fluid is ideal for cleaning the commutator. Before I rush out and buy some is that right? Or should I use something else, and if so what should I use?

Online Greybeard

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Re: Cleaning dynamo commutator
« Reply #1 on: 22.05. 2017 11:41 »
I thought that I would do a spot of dynamo maintenance. I remember reading once that lighter fluid is ideal for cleaning the commutator. Before I rush out and buy some is that right? Or should I use something else, and if so what should I use?
Greybeard stands well back..."Ok, kick her over"  >:D

Offline muskrat

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Re: Cleaning dynamo commutator
« Reply #2 on: 22.05. 2017 13:12 »
G'day John.
I use 100% alcohol (brotherinlaw makes moonshine). If Ive drunk used it all I use electrical contact cleaner https://www.crcindustries.com.au/products/cleaners/co-contact-cleaner
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Offline coater87

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Re: Cleaning dynamo commutator
« Reply #3 on: 23.05. 2017 06:18 »
 Whatever you use, make sure the fumes had time to dissipate  *eek*

 Way back I watched a 250 h.p. DC motor burn off ethyl acitate fumes from someone using it to clean out brush dust instead of an air wond.

 Probably only burned about 15 seconds, but there were 4 sets of dirty knickers watching it happen. Good thing the brush covers were off, or it may have been worse.

 All I can think is solvent pooled up in the bottom of the motor case and didn't have time to evaporate and fume off before it was started.

 Lee

 
Central Wisconsin in the U.S.

Online Black Sheep

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Re: Cleaning dynamo commutator
« Reply #4 on: 23.05. 2017 06:45 »
I use a skoosh of electrical contact cleaner and a clean rag. Works a treat. You would almost think it was designed for the job.
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Online Triton Thrasher

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Re: Cleaning dynamo commutator
« Reply #5 on: 23.05. 2017 09:24 »
Some contact cleaners are just a way of marking up the price of alcohol.

Offline a101960

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Re: Cleaning dynamo commutator
« Reply #6 on: 23.05. 2017 09:30 »
Thanks for your replies chaps. Contact cleaner it is then.