Is a bike of this vintage supposed to have friction material in the bottom of the basket? To clarify, the 1957 on clutches have lining material in the clutch basket, an extra plain plate and a different centre. Mixing components is not going to be immediately obvious. There's a description here: ht...

That's what I thought. Its well worth having a look at the basket & centre of this 'problem clutch', preferably with some pictures posted to the forum. I have to say that the cork clutch on my SQ4 is one of the nicest clutches I've had - no slip or drag, and very light once the cable is routed ...

...slacken off gearbox & swing it towards engine to allow removal of primary chain..... Just make sure you've loosened the secondary chain before doing this! Alternatively you might be able to slide the engine and clutch sprockets off together (leaving the chain joined and the clutch chainwheel...

dave.owen wrote:Chris, where do you live, maybe someone who is local could help

Dave - Just over the top of the Essex border in Suffolk - nearest big town is Haverhill

Go and do the setting off in first gear then opening the throttle bit again. Once the bike has experienced the "clutch slip", put your hand on the clutch dome. If it is clutch slip, the dome will be hot. If it is the sprocket and sliding member slipping, the clutch dome will be cold. Paul...

Gary

cheers - i am sure once I've conducted the test Paul suggested - i will move on to this and follow my nose - thanks for the rapid reply anyway

i am not really in a rush - just wanted to gauge it for my own time frames - thanks again to all

Paul - thanks i will do that next

Simon ? is this for me ?

Good Evening - new member to the forum - I purchased the bike that started the thread from John Lloyd last week -the issue still exists -- I am thinking the most likely issue is the sliding member and sprocket has gone the way Gary's (above thread) went - can I ask is this part once located from Dra...