Folding Kickstart Dome Nut Size/Thread Form

Information relating to the Matchless G80 or AJS Model 18 500cc Heavyweight.
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Location: BERKSHIRE UK

Folding Kickstart Dome Nut Size/Thread Form

Postby Iron Head » Sun Mar 31, 2019 12:39 am

Hi can anyone advise on the above for a ‘54 G80CS. The dome nut threads are worn and I didn’t half bruise my leg tonight when the folding arm separated from the shaft! Only consolation was that I got the bike running after a 50 odd year slumber and all sounds good.

Iron Head

Member
Posts: 85
Joined: Sun Jan 24, 2016 7:19 pm
Location: BERKSHIRE UK

Re: Folding Kickstart Dome Nut Size/Thread Form

Postby Iron Head » Mon Apr 08, 2019 12:17 pm

Just for completeness on this post, seems a 3/8” UNF dome nut (a la Commando) does the trick. I also shimmed the bore of the folding arm and got a nice fit. Whole thing feels much more robust now.

Iron Head

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