Author Topic: Clutch plates  (Read 480 times)

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Offline Crashtestdummy

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Clutch plates
« on: December 26, 2018, 04:26:34 pm »
Hi guys ii hope you all had a great Christmas, here is another in a long list of questions, can you still get replacement clutch plates for the c11? Also how difficult is it to rebuild and get gearbox parts for a three speed?
Thank you all,
Andy

Online Owen

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Re: Clutch plates
« Reply #1 on: December 26, 2018, 04:37:32 pm »
You can get the clutch plates re-corked and new sureflex plain plates easily. Bob metson is the man for re-corking. Look in the usefull contacts.
1940 C12 (350cc)
1945 C10 & C11
1953 C10 & C11
Anyone want a B20 in need of a lot of tlc

Offline Crashtestdummy

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Re: Clutch plates
« Reply #2 on: December 26, 2018, 04:48:35 pm »
Great thank you only one thread suggested he has sold the business.

Offline C11Andy

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Re: Clutch plates
« Reply #3 on: December 26, 2018, 05:01:08 pm »
He has
1953 C11
1958 Ariel NH
1959 T100A

Offline C11Andy

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Re: Clutch plates
« Reply #4 on: December 26, 2018, 05:06:09 pm »
See my post under Clutch in Useful links and contacts section, gives name and address of person who took over the business. Did a good job of my chain wheel.  Andy
1953 C11
1958 Ariel NH
1959 T100A

Online Owen

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Re: Clutch plates
« Reply #5 on: December 26, 2018, 05:13:34 pm »
I believe Bob has bought it back
1940 C12 (350cc)
1945 C10 & C11
1953 C10 & C11
Anyone want a B20 in need of a lot of tlc

Online camman3

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Re: Clutch plates
« Reply #6 on: December 26, 2018, 05:16:52 pm »
Draganfly have them in stock......probably sureflex.
Graham
1957 C12
In sunny (sometimes) Christchurch, Dorset, UK

Offline C11Andy

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Re: Clutch plates
« Reply #7 on: December 26, 2018, 05:43:31 pm »
Bob bought the business back from the first person he sold it too then sold it again.
1953 C11
1958 Ariel NH
1959 T100A

Offline Brillandy

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Re: Clutch plates
« Reply #8 on: December 26, 2018, 05:50:35 pm »
Why not have a go at doing it yourself?
It's not difficult and it will give you something to do instead of watching all that rubbish on TV!   ;D
There's a guide on how to here: https://bsac10c11c12.co.uk/smf/technical-tips/clutch-plate-re-cork/

Andy
56 C10L
60 Nuffield DM4

Offline C11Andy

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Re: Clutch plates
« Reply #9 on: December 26, 2018, 06:06:26 pm »
To be honest I wouldn't bother re corking the ordinary plates, I would buy the surflex ones. With a chain wheel, however as in my case, you have no choice.
Andy
1953 C11
1958 Ariel NH
1959 T100A

Offline Ginge

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Re: Clutch plates
« Reply #10 on: December 27, 2018, 06:22:42 am »
Rebuilding a three speed box is no big drama.  The bearings are standard bearings available from any reputable bearing supplier.  Keep the old ones and use the reference numbers off them for modern equivalents.

You may need to find a sympathetic soul with a lathe to make you some shims to space everything out so the gears engage nicely.  See Draganfly for replacement gears but only for anything really badly worn.  If the gear teeth are worn through the hardening I'd replace them.  Otherwise roll with what is already inside.  You won't be racing it will you?

Plan on replacing a kick start spring, gaskets and possibly the pawls and quadrant.  Also the bronze bushes.  They can be bought or made.

Once done it will see the bike out.  Worth doing once and worth doing well.
Ginge.

Offline timsdad

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Re: Clutch plates
« Reply #11 on: December 27, 2018, 07:27:51 am »
The parts that are very hard to find, and which wear the most, are the side-ways, dog-tooth ratchet gears for the kick start. If it were mine, Andy, I'd just re-use everything that's not broken or absolutely shagged out because these old gearboxes are so robust.

Old bearings rarely suffer from wear, but the output gear on the main shaft may need replacing if noisy, and lots of replacement stuff is crap. Often, new kick start springs are rubbish compared with a seventy-year-old original one so, apart from seals, gaskets, rubber bump-stop and output bearing, I get anything I may need from a gearbox that's been broken for spares. All the information and advice you need is in the original Owners' Instruction Manual, Haycraft or Pitman Book and I'm sure it's also reprinted in the relevant Technical section here.

Works for me!

Ray
Just a motorcyclist.

Online griff

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Re: Clutch plates
« Reply #12 on: December 27, 2018, 07:53:03 am »
For my C12 I bought new clutch plates from India. Good quality, work well and cost less than buying new corks . Delivery was less than a week. Yes found them on Fleabay...    :o   Griff
Ride safely and no pinchmarks on the seat.
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Offline MilitaryRon

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Re: Clutch plates
« Reply #13 on: December 29, 2018, 07:54:23 pm »
I just phoned the people who have taken over the re-corking business. She quoted me £21 each for the three Triumph plates that I asked about. That took the wind out of my sails. I think Bob charged me £7 a plate for my last job. I'll speak to Drags on Wed as they have them listed under the old part number for £9 each inc vat.  Ron

Online Owen

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Re: Clutch plates
« Reply #14 on: December 29, 2018, 10:08:14 pm »
I believe the drag clutch plates are the bonded type not the original cork.
1940 C12 (350cc)
1945 C10 & C11
1953 C10 & C11
Anyone want a B20 in need of a lot of tlc