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Author Topic: Dommie gear urgent question  (Read 4137 times)

Offline seasong

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Dommie gear urgent question
« on: May 04, 2010, 05:02:33 PM »
Hallo there,
the dynamo fibre gear wheel of my 1957 model 77 has worn out, as I can't find replacement I've had one machined on a lathe, as it has been done in alluminium my doubt now is: was it in fibre for electrical conduction matters? Any help will be greatly appreciated!
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Offline 33d6

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Re: Dommie gear urgent question
« Reply #1 on: May 06, 2010, 12:56:18 AM »
No it wasn't done for electrical conduction matters but rather for quietness and cheap to make.
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Offline Revband

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Re: Dommie gear urgent question
« Reply #2 on: May 06, 2010, 02:53:15 PM »
Yes the "fibre" gear was made in a mold using cotton waste and resin, very cheap to produce.

There are certain magnetos which need an insulated gear but very few still exist.
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Offline seasong

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Re: Dommie gear urgent question
« Reply #3 on: May 08, 2010, 09:34:24 PM »
to 33d6 & Revband: I really appreciate your usefull advises, I'll mount safety the alluminium one then; many many thanks from an entusiast from Italy! :-*
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