Further to my clutch issues can anyone confirm the number of plain steel and friction plates there should be in my clutch please
I have stripped the clutch and found there to be 4 friction plates and 5 plain steel
I looked at the parts book for 1948 ES2 and the exploded diagram shows 5 friction and 6 plain steel but the parts price listing for items Q14 plain steel plates states 5 and for Q15 friction plates 5 also.
E.M.Franks gives the numbers as 6 plain steel and 5 friction in his book too.
Logic dictates that with an empty hub the first plate has to be plain steel to butt against the friction inserts in the sprocket/cage and the last plate must also be plain steel to run against the outer dished plate therefore there has to be one more plain than friction.
There seems to be room in the hub for one more friction and plain plate on my bike so I'm guessing mine is missing one of each? and there should be 6 plain and 5 friction.
Many thanks
Graham
The possibility is that any…
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Number of plates
Whilst I don't have an answer to the question of how many plates, just be aware that the more plates you have, the greater the lift required to separate them.
Not very helpful, but it can be a balancing act - less plates = less risk of clutch drag, but more prone to slipping under full load. Stronger springs can help this but will mean heavier clutch action
more plates = more risk of drag and ability to find neutral at a standstill, but shouldn't give slip issues.
So, was it slipping before your stripping it down? If not, then if it were me I'd keep the same number of plates that you currently have.
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Thanks George, I think I'll…
Thanks George, I think I'll stick to 4 friction and 5 plain.
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The possibility is that any replacement plates will be a different thickness to OE plates . I would fit as many as possible that will allow full lift and not exceed the basket depth. But its a guess !!