Burman sleeve gear play

Information relating to the Matchless G80 or AJS Model 18 500cc Heavyweight.
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Red Gauntlet
Member
Posts: 173
Joined: Wed Aug 19, 2020 11:22 am
Location: Dorset UK

Burman sleeve gear play

Post by Red Gauntlet »

My Main shaft has about 12 thou play (0.3mm) up and down/ side to side, so the sleeve gear bushes are worn, however I cannot find a maximum limit for the wear, accepting this is an oil grease mix box then is this within tolerance or way out?
Mick D
Posts: 2886
Joined: Mon Mar 24, 2014 5:44 pm
Location: Aberdeenshire

Re: Burman sleeve gear play

Post by Mick D »

Hi

When I re-bushed my sleeve gear I was advised to allow 0.003" - 0.005" clearance i if yours isn't leaking or noisy I'd be tempted to 'suck it and see'

Regards Mick
Andy51
Member
Posts: 742
Joined: Thu Mar 31, 2005 1:00 am
Location: BERKS UK

Re: Burman sleeve gear play

Post by Andy51 »

Phil Irving says in Tuning for Speed that ideally you should aim for 2 thou play, but up to 6 thou is acceptable. However, the book was aimed at racers so I'm sure a bit more wouldn't hurt on a roadster that will probably do less than 1,000 miles per year at under 60mph - I tend to agree with Mick. Andy
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