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Re: new clutch options

thanks for all the info, i will call Les and see what he has in order to keep it original but i like the idea of the Triumph set up
what is the rough cost for the complete Triumph set up Ian....ps im in Canada near Vancouver :)

email (option): taybrig@shaw.ca

Re: new clutch options

why do you remove 2 plates Ron, doesnt it affect slipage?

email (option): taybrig@shaw.ca

Re: new clutch options

Some pattern fibre plates are thicker than the originals so a full stack (8)leaves insufficient space in the clutch basket for them to separate completely when the clutch lever is pulled in..Removing two plates (one steel and one fibre) restores the overall height to within limits and allows the clutch to operate correctly. It doesn't affect grip...The fibre plates should be .093" thick when new...

It can also help with a clutch that has standard plates fitted but has wear in the various components leading to a loss of lift/misalignment resulting in poor separation of the plates...Ian

email (option): ian@wright52.plus.com

Re: new clutch options

What are the "6 spring haters" think of the pre war 6 spring clutch? Does all these bad words apply to the pre war one too? I have to decide whether restore my M22 original clutch or convert.

email (option): kalle.tikas{ät}gmail.com

Re: new clutch options

In my opinion your M22 should have the original clutch...

Actually I think the 6 spring clutch is in basics a sound design, with the chainwheel incorporated within the clutchplate pack which gives a solid unit when the spring pressure is on and has a good way to adjust springpressure and square lifting, it is only too light and cheaply made.

The single spring is in my eyes the opposite, strongly made but in basics a poor design, it is not a solid unit when the spring pressure is on, the chainwheel/basket 'rocks' around the solid clutchplate pack, this results in relatively quick wear of the outer clutchplate lips as they will hammer against the basket in both directions every time the powerline is reversed. The greater the play the harder the hammering.

Additionally no way to adjust the springpressure or rectify uneven lifting....:slightly_frowning_face:

Cheers, Michiel :relaxed:

Re: new clutch options

kevin
why do you remove 2 plates Ron, doesnt it affect slipage?
Kevin the friction plates in both my clutches are standard thickness and both clutches are in reasonable order. But it suits me fine to leave two plates out to give a much lighter clutch with more separation in the basket. As I said, both my engines are more powerful than standard and I've never experienced any clutch slip. Ron

email (option): ronpier@talk21.com

Re: new clutch options

['it is only too light and cheaply made...']

Well, that pretty much says it about the six spring clutch...It is poorly made and not typical of BSA products of the period..

There is also a tendency for the spring studs to break away from the centre, the double 'captive ball bearing rings' are weak and the material of the clutch centre is too thin and therefore only bears on a short length of the clutch sleeve spline resulting in premature wear of that part..The original cork basket inserts are also prone to falling out and are awkward to replace... I have also found that if you do have to take one off for any reason it is always a battle to set it up again...

It's not a case of being an irrational '6 spring hater', simply a recognition of the fact it isn't a very good clutch...Why bother to deal with all these issues when the better Triumph clutch is readily available?...

The fact is you can't see the clutch inside the primary covers so originality just for the sake of it on an important working part of the bike is rather pointless...Jelly batteries and solid state regulators don't seem to cause a problem in this regard, what's the difference?.... Ian

email (option): ian@wright52.plus.com

Re: new clutch options

In the past i installed the 15 spring clutch from thb support in holland.
It is very easy to mount and it can even run in oil as the plates are kevlar....and the clutch is much lighter to operate.

Re: new clutch options

http://thb-support.nl/webshop/product_info.php?products_id=37

Re: new clutch options

Hi, does this kit you buy in the Netherlands need no modification? Is it possible to dismantle the old clutch and mount it?
It seems to me an excellent and lasting solution

email (option): bongiovanni1988@libero.it

Re: new clutch options

Hi Ron

replacing the plates ect with origin unknown do you have to replace the clutch rod ?

is it the case you need a longer rod when omitting 2 plates ?

Re: new clutch options

Kidderminster Motorcycles supply the complete 4 spring clutch with adapter to fit M20.
I will be going that route.

Re: new clutch options

Roy, so long ago I can't remember about the length of the rods. If I replaced them at the time, I would have made a 1/4" length of silver steel into the desired length before hardening and tempering. A friend of mine is complaining that his clutch is heavy, so I'll be assisting him with it......Maybe the cable just needs oiling....Otherwise we'll probably remove two plates and I'll see if we need to shorten the push rod? Ron

email (option): ronpier@talk21.com

Re: new clutch options

Thanks Ron

would you know if the surflex italian made plates are any good ? reading through some post most of the plates on the market seem to be from india and of poor quality .

I also need a spring ( single spring ) again i prefer a quality one

Re: new clutch options

I would first phone Les at Russell Motors. Best times to try= Tue-Thur 10-4

Ron

email (option): ronpier@talk21.com

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