Author Topic: BSA clutch basket is out of line  (Read 162 times)

Offline barry2

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BSA clutch basket is out of line
« on: 25.03. 2020 02:50 »
Hi mates
I hope I can ask this question as it is similar to my 1954 Road Rocket,  I have just bought a 1955 BSA CB500 Goldstar, the clutch / chain wheel basket is out of line ,  it is a floating type, the clutch inserts were pushed in (or out) allowing the c/ wheel to go too far in, this would happen if the pressure plate/s  was bearing on the basket and pushing it, can't really see anything except the basket is fairly worn where the plain plates contact , any idea if this would cause it----all the best and Stay safe Barry 
WA

Online JulianS

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Re: BSA clutch basket is out of line
« Reply #1 on: 25.03. 2020 10:09 »
It is possible to mismatch parts.

The 1956 models A7 A10 B31 and B33 had a different primary drive line to the earlier standard models and all the Gold Stars.

For 1956 non Gold Stars had the chainline about 1/8 inch further out to allow sufficient space for the tin rear chaincase to clear the gearbox. This was achieved using a different clutch sleeve and different cush drive bearing.

Offline barry2

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Re: BSA clutch basket is out of line
« Reply #2 on: 26.03. 2020 07:15 »
Hi Julian
Thanks for that, I pushed the inserts back to near normal and the c/wheel was near enough in line, Went to order a puller off ebay for 6 spring clutch, but my external thread ( on sleeve?) is 30 mm ( 1 3/16") 26 tpi, but ones on ebay are 1 1/4",, what do think of that? all the best----Barry
WA

Offline barry2

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Re: BSA clutch basket is out of line
« Reply #3 on: 29.03. 2020 08:23 »
Hi Mates
RE;; out of line ,, the last plain plate was worn in a bit on the splines shoulder,, thinking of putting shim of around 30-40 thou'  on the spline area  to make up for it, what do you think?
Barry
WA