Long Stroke Dynamo Chain

[bikerjohndavies]

I know it is taking a long time to finish this project but I have just got round to fitting the dynamo drive sprockets and chain to my 1949 long stoke A7 and the chain seems to be to long. It would cause the sprocket on the dynamo to hit the casing. I have also tried a belt drive set up that I had spare from my A10 SR but that also is to long. I see that the 47-50 dynamo chain has a different part number to the short stroke A7 and A10s so can I assume that the long stroke had a shorter chain ? If so, does anynody know how many links it should be. Cheers, John

[beezermacc]

Not sure if this helps but the dynamo driven sprocket also changed with the later one 67-727 having 11 teeth. Presumably the earlier one had 10 teeth? Some of the earlier components were shared with the C10/11.

[bikerjohndavies]

Have found the answer to my own question. It seems that the long stroke dynamo chain (29-2199) is 48 links instead of 52.

[trevinoz]

I may be a bit confused but I think that the short E3H generator has a 13 tooth sprocket against the E3L with 11 teeth.
Consequently, bikes with the short generator had a longer chain.

 Trev.