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by allan.walker
Wed Sep 02, 2020 8:08 am
Forum: Four stroke
Topic: Engine Shock Absorber
Replies: 11
Views: 594

Re: Engine Shock Absorber

Thanks for the clarification, David.
by allan.walker
Tue Sep 01, 2020 8:10 am
Forum: Four stroke
Topic: Engine Shock Absorber
Replies: 11
Views: 594

Re: Engine Shock Absorber

Beg to differ Will - I'm running a 23-tooth on a 500 and it's very well suited to back roads 'cos the engine has plenty of low-down (and mid-range) 'oomph' (the only reason I can think of for even dropping to a 22-tooth is because of a 9:1 piston and HS camshaft and needing easy 80+mph on motorways...
by allan.walker
Mon Aug 31, 2020 9:51 am
Forum: Four stroke
Topic: Mk1 Sq 4 BLOWING HEAD GASKET
Replies: 23
Views: 1081

Re: Mk1 Sq 4 BLOWING HEAD GASKET

I have read on other motorcycle forums that helicoils can be unreliable in stressed situations (such as in a casting made of a soft grade of aluminium alloy.) The most frequent recommendation for stripped threads in such conditions is to use 'Time-Sert' inserts. Apparently, they have a much deeper a...
by allan.walker
Sat Aug 01, 2020 9:21 am
Forum: Four stroke
Topic: Mk1 Sq 4 BLOWING HEAD GASKET
Replies: 23
Views: 1081

Re: Mk1 Sq 4 BLOWING HEAD GASKET

I sympathise with the problem you are having! The only point I would make is that you said "I have put a straight edge across the mating surfaces and they both appear to be nice and flat. " If there is another leak at the same spot, with new gaskets and correctly torqued studs, it does mak...
by allan.walker
Wed Jul 22, 2020 8:21 am
Forum: Four stroke
Topic: Square Four/Huntmaster clutch maladies
Replies: 27
Views: 767

Re: Square Four/Huntmaster clutch maladies

I think there may still be a problem with the studs loose in their holes ..... to allow a proper tight fit of the securing nut.....or . Could you explain your concern about the loose studs, please? I think that it will make fitting the springs and nuts potentially a bit fiddly, but what other probl...
by allan.walker
Tue Jul 21, 2020 8:00 am
Forum: Four stroke
Topic: Square Four/Huntmaster clutch maladies
Replies: 27
Views: 767

Re: Square Four/Huntmaster clutch maladies

Eero.Korhonen wrote:Those rods are very soft, I think they are graded 4.6.

Yes, so I have ordered the correct ones with 'heads' that sit behind the clutch centre.
by allan.walker
Tue Jul 21, 2020 7:59 am
Forum: Four stroke
Topic: Square Four/Huntmaster clutch maladies
Replies: 27
Views: 767

Re: Square Four/Huntmaster clutch maladies

Thanks for looking into this, John. It's helpful to know that the centre is definitely Matchless. Regarding oil on the clutch, so far, the clutch has stayed dry in the 600 miles or so I have ridden the bike. Having said that, I was reading about the dished alloy flinger-plates sold by the Club which...
by allan.walker
Mon Jul 20, 2020 9:31 am
Forum: Four stroke
Topic: Square Four/Huntmaster clutch maladies
Replies: 27
Views: 767

Re: Square Four/Huntmaster clutch maladies

Eero.Korhonen wrote:I think those studs in the pictures were made from 6 mm threaded rod.


You are right, Eero. Strangely enough, though, the one that broke-off has a plain unthreaded portion at its base, so I assume that may be an original one.
by allan.walker
Mon Jul 20, 2020 9:29 am
Forum: Four stroke
Topic: Square Four/Huntmaster clutch maladies
Replies: 27
Views: 767

Re: Square Four/Huntmaster clutch maladies

john.whiting wrote:If the clutch is the standard small diameter Matchless one ,with the normal complement of plates ,I would expect it to give trouble with a S4.....


Maybe so, John. I suppose we're all in uncharted waters with this one....I'll just suck it and see!
by allan.walker
Sat Jul 18, 2020 5:24 pm
Forum: Four stroke
Topic: Square Four/Huntmaster clutch maladies
Replies: 27
Views: 767

Re: Square Four/Huntmaster clutch maladies

Thank you for sharing the pictures Allan, it’s a great bike and the conversion “looks right”. It would have made a great article for the Cheval. The only part I am not keen on is the early tank. This particular one is Indian, of course, but it is pretty good. It's just that the junction between the...

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