Swapping Chaincases

Information relating to the Matchless G80 or AJS Model 18 500cc Heavyweight.
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Joker_Bones
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Re: Swapping Chaincases

Post by Joker_Bones »

No... The photo is low res, zoom in... the dynamo sprocket is tucked right into the inner case.
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Joker_Bones
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Joined: Sat Apr 27, 2013 3:51 pm
Location: DORSET UK

Re: Swapping Chaincases

Post by Joker_Bones »

This was a few years ago.... Your post made me think and remember what the issues were.
The bike came with the alloy cases fitted. The crankcase looks as if it should have a steel case fitted, but doesn't have a dated engine number, so I don't know its year.
The issue was... The boss on the back of the inner case was too thick to allow the front sprocket to be fitted correctly. A thicker spacer (a piece of sawn off tube) had been fitted behind the sprocket so that it did not foul the inner case.
This meant it was out of alignment with the clutch sprocket.
I had to machine and recess the boss to move the case inward to allow the front sprocket to line up with clutch sprocket.
56G80S
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Re: Swapping Chaincases

Post by 56G80S »

Interesting post. I zoomed in but like Clive can't see how the dynamo shaft would fit through and line up. Having said that, with a high capacity battery, LEDs and a magneto having a dynamo at all may be unnecessary depending on one's proposed usage?

JohnnyB
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