Author Topic: Chain and sprockets  (Read 185 times)

Offline Mosin

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Chain and sprockets
« on: 15.07. 2024 18:03 »
So, my final drive chain and sprockets were looking a bit past their best so I decided it was time for a new set. This is a job which I have done hundreds of times on various bikes, but never on the A before. I expected it to take a couple of hours to swap them out.

Well I have just finished my second full day on the job and the bike is still not rideable. Surely BSA did not design a bike which required so much work just to do what should be routine maintenance? Or am I missing a secret hatch or something which allows access to the gearbox sprocket without having to dismantle and remove the whole primary side and clutch? (never mind the the several hours it took to get the seized clutch hub off).

Actually, if there is a much easier way, don't tell me. I am not sure that I want to know!
1960 A7 Shooting Star
1959 D3 Bantam
1994 Triumph Trident 900

North West England

Online RichardL

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Re: Chain and sprockets
« Reply #1 on: 15.07. 2024 18:38 »
Nope. Whole primary has to come apart. Just did it myself to check the slack-tight chain problem.

Richard L.

Online muskrat

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Re: Chain and sprockets
« Reply #2 on: 15.07. 2024 20:47 »
G'day Mosin.
Lucky you don't have a plunger A7/10, the whole motor/gearbox has to come out and split.
On my HD the swingarm has to come off as well!
Cheers
'51 A7 plunger, '57 A7SS racer now a A10CR, '78 XT500, '83 CB1100F, 88 HD FXST, 2000 CBR929RR ex Honda Australia Superbike .
Australia
Muskys Plunger A7