Author Topic: Clutch problem C11g  (Read 331 times)

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Offline stecer

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Clutch problem C11g
« on: October 28, 2020, 08:35:46 pm »
Hi,
I have attached a picture showing my C11g clutch. If I wind in the bolts any further then the plates seem to lock down and will not lift when activating the clutch. Can I leave them this far out?
It makes no difference if I remove the spacers on the threads...

Any help or advice?

Online camman3

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Re: Clutch problem C11g
« Reply #1 on: October 28, 2020, 09:03:56 pm »
Have you got correct springs?
How many plates have you got in clutch?
And how long are the spacers?
The nuts need to tighten down on to spacers otherwise the clutch will snatch
Graham
1957 C12
In sunny (sometimes) Christchurch, Dorset, UK

Offline stecer

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Re: Clutch problem C11g
« Reply #2 on: October 28, 2020, 10:44:36 pm »
Thank you for your message:
I have these plates:
2 Plain plates (0.63" and 0.94" thick)
2 new friction plates (0.148 +0.144)
1 outer plate.

The three springs :
OD 0.666"
Length 1.525", 1.522" & 1.544"

The spacers are newly made on the lathe and are 0.946" long each.

The three bolts measure 0.855", 0.846" & 0.784".
The three cups measure 1.319", 1.319" & 1.322".

The clutch pushrod measure 11+2/8th inches

I hope this might throw some light on the matter?

thanks for reading this...

Steve

Online timsdad

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Re: Clutch problem C11g
« Reply #3 on: October 29, 2020, 07:37:40 am »
It looks to me, from the gap at the top, that something isn't seating properly. The nuts need to thread on the studs far enough to be secure, at least a touch more than the width of the stud, and washers can be added to the spacers so the nuts can be tightened fully down.

Maybe the push rod is too long.


Ray
Just a motorcyclist.

Online ianinglis

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Re: Clutch problem C11g
« Reply #4 on: October 29, 2020, 08:56:41 am »
the spacers are a little short in my opinion - the original length is 1"
try a little bit longer at first you can always shorten them to suit - i would start with 1 + 1/16" or about 27mm
and check the rod length!



ian
BSA C10L 1956 - JFO 588
BSA C10L 1954 - MVE 107
RM6 RALEIGH RUNABOUT
ENFIELD DIESEL KUBOTA OC 95
BSA M21 RIGID RKN 816
CBF 1000
AUSTIN BIG 7

Online camman3

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Re: Clutch problem C11g
« Reply #5 on: October 29, 2020, 09:36:14 am »
Do all the plates slide freely in slots, including, and most importantly, the top pressure plate, and I presume you have put the thicker plain plate in first?
Graham
1957 C12
In sunny (sometimes) Christchurch, Dorset, UK

Online chaterlea25

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Re: Clutch problem C11g
« Reply #6 on: October 29, 2020, 08:39:17 pm »
Hi stecer,
Is the pressure plate sitting onto the inner drum ? I can see what looks like a gap in your photo?
From memory it will only fit onto the inner drum splines and line up with the spring studs in one position ????

John


Offline stecer

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Re: Clutch problem C11g
« Reply #7 on: October 30, 2020, 09:58:12 pm »
Many thanks for taking time to respond.
I have checked that everything now slides ok and that the thicker plate is correctly positioned. I think it will work ok but will see if it will respond well when I get to kick it over. I may have to revisit the length of the spacers and pushrod if there are problems.

Steve