No Clutch travel B52 Gear Box

AJSBSA · Post by **AJSBSA** » Mon Sep 18, 2000 9:56 pm

I have very little travel on my clutch and I have to have the clutch cable adjuster right out to get the little I have.
I believe it is worn cam plates that is the problem should the 3 indents be round or should they be tear shaped like mine?
If they should be round does any body have source for new ones or can they be repaired?
I believe the part numbers are G-33-3, G-32-2 they are not listed in the Jampot Spares catalogue.

TommoT · Post by **TommoT** » Thu Sep 21, 2000 12:04 am

They are round/circular from new. If your tear shape extends to the whole travel of the cam plates this could be a problem. Maybe a repair can be done by building up with weld, but it has to be costly if you cannot do it yourself. Replacement items must be sought through the usual channels, Spares Scheme (they may have some, even if not listed) or the specialist dealers in second hand spares. If you can find slightly larger balls this might cure the problem for a while, haven't tried it though.

Safe riding
Tom

Jordan Princic. · Post by **Jordan Princic.** » Mon Sep 25, 2000 3:07 am

I've seen both round and tear-shaped. It's the effective lift that's important. Do you have correct hand lever? Try one with more travel, which is related to the distance between the fulcrum screw and the cable nipple.
Also check for bent clutch pushrod, missing or wrong parts (pushrod length), and free play adjustment.

AJSBSA · Post by **AJSBSA** » Mon Oct 02, 2000 9:54 pm

Thanks to you and Tom for the advice I have now replaced the cam plates (Russel Motors had some) and it is much better.
The distance between centres on my levers is 7/8 of an inch is this correct? as I still have to change into first while moving before coming to a stop.

TommoT · Post by **TommoT** » Mon Oct 02, 2000 11:39 pm

Ok Stephen this is where your real problem lies. The distance on my lever is 1-1/8"! So you're missing about 2/8 of leverage!

Correct this and you'll be riding a smooth clutch!

Tom

RogerNorman · Post by **RogerNorman** » Sun Oct 08, 2000 10:45 pm

Tom. sorry your wrong. The correct levers have the pivot centres at 7/8th inch. The extra travel of 1 inch (or greater) levers makes the clutch far heavier. Check that you have the correct plain steel plates. If you have bonded friction plates (rather than loose cork inserts as the originals) you will need the thinner plates. Unfortunatly these are prone to overheating if badly adjusted and will in time almost act like a diaphragm clutch if you are not careful. Get the adjustment correct - screw adjusters on the drum 4 turns out from fully in, then adjust for even running. then run the centre adjuster against the push rod and turn back half a turn. Tighten the lock nut without the centre adjuster moving (a plug spanner fits well here) and only then connect the clutch cable back to the gearbox. Adjust the cable so that there is about 1/8th to 1/4 inch free travel at the lever. If you can run to a nylon lined clutch cable this will also make a big difference. Venhill Engineering at Dorking Surrey will make you one up if you send them the old cable with fittings as a pattern for about £15.

TommoT · Post by **TommoT** » Mon Oct 09, 2000 9:30 pm

Thanks for clearing that up. I have had the problem with the whole friction/steel plate assembly being too wide. Thinner steel plates solved the problem, so I guess I'll have to look out for the overheating problem you describe! However I don't understand how the extra leverage can cause heavy action, guess I'll try that out with a correct lever to feel the difference. Clutch action is light enough though.

Thanks again!

Safe riding
Tom

AJSBSA · Post by **AJSBSA** » Sun Oct 15, 2000 5:37 pm

I tried a new lever (1-1/8 between centres) and yes it did make dramatic difference!
I my gearbox must think it has died and gone to heaven, silent changes are the order of the day.
But it has made the lever much harder to use and I may have to purchase a nylon lined cable before my left hand wears out.
Thanks everybody

silverarrow · Post by **silverarrow** » Tue Oct 17, 2000 9:44 am

I purchased a clutch cable some years ago that had a grease nipple about 6" (150cm) from the lever and all i do is give a pump with grease once a year. This has revolutionised the clutch operation.

Les