Author Topic: Comet 250 dynamo gear  (Read 467 times)

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Offline Parsnips

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Comet 250 dynamo gear
« on: 25 Sep 2020 at 08:56 »
Hello everyone,

I am working on my Comet 250 and have found that the intermediate dynamo drive gear that sits in a bearing in the timing cover is missing. It's the one that mates the the top gear in the pic.
Are these available from anywhere or can someone pass on the details in order to make one? A sketch or photo with principle dimensions would be of immense help.
Cheers,
Mark



Image orientation fixed - Dave, 26 Sep 2020
« Last Edit: 25 Sep 2020 at 18:51 by Dave »

Offline Doug

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Re: Comet 250 dynamo gear
« Reply #1 on: 25 Sep 2020 at 20:14 »
Mark,

Some pictures can be found in this post:

https://www.douglasmotorcycles.net/index.php?topic=6562.msg24596#msg24596

And drawings are here:

Clutch assembly
Magneto Gear
Cone
Spring
Ring Nut
Drive Gear
Drive Shaft & assembly

-Doug



[fix links.  25Sep20  -Doug]
« Last Edit: 25 Sep 2020 at 20:21 by Doug »

Offline Tazmantic

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Re: Comet 250 dynamo gear
« Reply #2 on: 25 Sep 2020 at 22:54 »
Hi looks like Doug beat me to it, I have one (tho I need 2) so if you need anymore info please ask but Id decided not to get one made as the dynamos I have are next to useless so might be worth checking it does charge before you spend out to get one made..

Cheers

Offline EW-Ron

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Re: Comet 250 dynamo gear
« Reply #3 on: 26 Sep 2020 at 00:20 »
Its also worth contemplating how much actual night time riding you are likely to do before spending big on such things.
A fully/regularly charged battery (at home) will go a fair way if you don't actually ride it at night.

And it all looks like its complete and functional, without the big spend if you don't need it ...

Offline Parsnips

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Re: Comet 250 dynamo gear
« Reply #4 on: 28 Sep 2020 at 07:58 »
Many thanks chaps,
I will use Doug's drawings to make the parts myself and get things back to as Mr Douglas intended.
I get more enjoyment and satisfaction faffing around (as my daughter says) making things than actually riding my bikes.

Thank again,
Mark

Offline Tazmantic

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Re: Comet 250 dynamo gear
« Reply #5 on: 28 Sep 2020 at 21:52 »
Well if you feel the urge to make 2 I might be interested at the right price  :) I could prob make the shaft but not the gear...

Offline Parsnips

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Re: Comet 250 dynamo gear
« Reply #6 on: 29 Sep 2020 at 08:08 »
Ok Taz,
I normally have to make a few to get it right  :)

Mark

 

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