G12 Clutch identification and spares

Information relating to the Matchless G12 or AJS Model 31 650cc twin
Posts: 8
Joined: Sun Aug 26, 2018 8:07 pm
Location: Germany

Re: G12 Clutch identification and spares

Postby LeYves23 » Sat Sep 01, 2018 10:48 pm

So the story continues...
My plan for today was to follow Spriddlers tip (thanks for that) and adjust the clutch close beyond the slipping point. Pulling the clutch was just to hard, so I had to take care of this.

But out of curiosity, I had to take the clutch apart. And here is what I found.


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A wild mix of different types of clutch blades, with marks of corrosion and some deep dents. Seams like someone tried to grind away the rust. Making dents in the blades. Which left only about 60% and on some blades only 30% of even touching surface. The pictures where taken after I had tried to sand them on an even survace, which I gave up, realizing the dents where to deep.

After I had the taken it apart and had a good look at the blades, it was pritty clear to me which article numbers in the Spares Catalogue must be the right ones. So I ordered a hole new set.

Qty Part No. Description

4x 043191 AMC STEEL CLUTCH PLATE EXT EAR
4x 043192 CLUTCH PLATE;DOUBLE SIDED AMC
1x 043193 PLATE FRICTION SINGLE SIDED

Fortunately, the Springs still had the original length, as subscribed in the Workshop Manual.

I am pritty shure, that with the new plates, I will have a good gripping clutch without needing to tighten dow the Springs as much as I did before...

Member
Posts: 149
Joined: Tue Oct 24, 2017 11:05 am
Location: DEVON UK

Re: G12 Clutch identification and spares

Postby MalcW » Mon Sep 03, 2018 8:25 am

LeYves23 wrote:P.S. Although pulling the clutch is some hard work now. Is that normal ?


Hi again

As others have said, get the clutch cable as well routed and smooth as possible, and check the cable adjustment. If you are used to a modern bike the clutch on these will feel notably heavier in comparison though. Glad to hear you've been able to get out for a ride now.

Cheers,

Malc

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