1955 primary chain case

Information relating to the Matchless G3 or AJS Model 16 350cc Heavyweight
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Tazmantic
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1955 primary chain case

Post by Tazmantic »

Hi all dose it look like this is all intact apart from what I presume is a bracket missing off the back and where this bracket should attach too?

Cheers
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Reynard24
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Re: 1955 primary chain case

Post by Reynard24 »

There is a strip that bolts to that bracket and also under the battery carrier - your battery carrier should have a countersunk hole in it for that purpose.
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Rob Harknett
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Re: 1955 primary chain case

Post by Rob Harknett »

It looks like the lug has broken off your chain case, that this bracket that bolts on it to the battery carrier.
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Tazmantic
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Re: 1955 primary chain case

Post by Tazmantic »

Thanks again guys mine hasn’t got a battery carrier as no Dynamo so I will fabricate something to suite now I know, any ideas how wide the spacer is between the engine mounting plate and the back of the chain case?

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Rob Harknett
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Re: 1955 primary chain case

Post by Rob Harknett »

Don't forget the 3 screws that hold the inner case to the crank case are a special type of screw with a looking washer.
Tazmantic
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Re: 1955 primary chain case

Post by Tazmantic »

Rob Harknett wrote: Thu Sep 16, 2021 7:48 pm Don't forget the 3 screws that hold the inner case to the crank case are a special type of screw with a looking washer.

There were 3 screws holding it on when I bought it but they didn’t look special can you elaborate please 🤦???
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Rob Harknett
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Re: 1955 primary chain case

Post by Rob Harknett »

They are featured in your bikes parts lists close by the bracket you were not aware of. I don't think you have a parts list.
The screws are 1/2 long 0 BA thread. the locking washers hold them in. I was following a mate one day and saw a lot of black smoke coming from his rear wheel he was lucky not to come off. His screws had come out, breaking both chains locking the wheel up. His dynamo armature was also bent. I think he had dome head slotted screws, and no locking washers..
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Tazmantic
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Re: 1955 primary chain case

Post by Tazmantic »

Great thanks, the bolts look like that but the washers definitely don’t so thank you again 👍
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56G80S
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Re: 1955 primary chain case

Post by 56G80S »

I use loctite on these as well as the locking washers.

Johnny B
Tazmantic
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Re: 1955 primary chain case

Post by Tazmantic »

56G80S wrote: Sun Sep 19, 2021 8:28 pm I use loctite on these as well as the locking washers.

Johnny B
👍 I will be doing the same
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