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Magneto drive chain size and no. of links

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anybody know off the top of their head what size and no. of links the magneto chain should have for 29' Model 18.....thanks in advance

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hello,

 

I don’t know the exact details of what your engine requires but maybe Mr. Norman at Racing Vincent can shed some light. He offers this chain for the later pre-war single.

https://racingnorton.co.uk/epages/4c675e64-813f-4c0a-8926-87a680c962a0.mobile/en_GB/?ObjectPath=/Shops/4c675e64-813f-4c0a-8926-87a680c962a0/Products/%220802+3709%22&Locale=en_GB

I assume your engine has the forward, horizontally mounted chain.  Are the sprockets still there?  Let him know the number of teeth too if so.

Good Luck

-Pat

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There are chain length calculators on the web.  But the input values might be inconvenient since the ones most easily found are for bicycles with 1/2" pitch. I suspect that's what you have anyway.

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You could contact the Chainman or other motorcycle chain suppliers as they may have a record of what you require

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... for me - always helpful and will probably know what you want already.

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If anybody needs these for the Dominator engines

Camshaft Chain, (D12/961)     p/n  17806  &  067689

0.375 x 0.25 x 0.225  – 38 links

 

Distributor / Magneto Chain    p/n 18257  &  067705

0.375 x 0.25 x 0.155  - 42 links

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Hi Dave....I am working my way through all the possibilities. The chances are that the chain dimensions will be one of those two.....just a different length. Does this Model 18 have the Magneto sticking out the front?

In which case it may be 0.375 x 0.25 x 0.155 x 52 links.....this needs confirming

 


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