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Motorcycle Discussions => British Bikes => Topic started by: seasong on May 04, 2010, 05:02:33 PM

Title: Dommie gear urgent question
Post by: seasong 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!
Title: Re: Dommie gear urgent question
Post by: 33d6 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.
Title: Re: Dommie gear urgent question
Post by: Revband 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.
Title: Re: Dommie gear urgent question
Post by: seasong 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! :-*