Tips fitting Clutch Rubber Smarties

Moderator: minetymenace

Forum rules
Please write in easy English so everybody understand.
Post Reply
User avatar
gunnag
>740
>740
Posts: 757
Joined: Fri Oct 01, 2004 9:32 am
Location: farnham surrey
Has thanked: 0
Been thanked: 1 time
Flag: Great Britain

Tips fitting Clutch Rubber Smarties

Post by gunnag » Tue Apr 28, 2009 6:59 pm

Ive just had a quick attempt at fitting some new rubber smarties to my B44 clutch hub.

Despite lubricating the rubbers with liquid soap, I found it really hard to get two rubbers adjacent to the spider. The rupert ratio book suggests a firm thumb will push them in but IM finding this virtually impossible!

Any tips on getting them in would be appreciated :smile:

baz
>240
>240
Posts: 246
Joined: Mon Jul 10, 2006 7:17 pm
Location: ESSEX
Has thanked: 2 times
Been thanked: 0
Flag: England

Re: Tips fitting Clutch Rubber Smarties

Post by baz » Tue Apr 28, 2009 7:21 pm

the way i do it is i took an old clutch centre ground 2 flats on it so i could clamp it in my vice i then put the clutch hub on it so only the spider was held,then i got a spare clutch plate and welded a bar to it then i put the tool on the clutch hub and pulled it one way place 4 smarties in then the other way for the other 4 its very easy this way and is worth making a tool because you may be seeing those smarties again! i think i saw an old BSA factory film on youtube where they were doing this on a automatic set up regards baz

User avatar
Mark Cook
>1400
>1400
Posts: 4770
Joined: Fri Sep 10, 2004 8:45 pm
Location: CCM Britain HQ Goldthorpe South Yorkshire
Has thanked: 4 times
Been thanked: 1 time
Flag: England
Contact:

Re: Tips fitting Clutch Rubber Smarties

Post by Mark Cook » Tue Apr 28, 2009 8:38 pm

I just stick all 4 of one side in, then weadle in the little buggers dry with a large blunt screwdriver one by one.

Mark
CCM Britain motorcycles and spares manufactured exclusively by PES

+44 (0) 1709 894192
http://www.ccm-britain.co.uk (online shopping experiance)

Mr Mike
>880
>880
Posts: 889
Joined: Tue Feb 28, 2006 4:14 am
Location: North Carolina, US
Has thanked: 0
Been thanked: 1 time
Flag: United States of America

Re: Tips fitting Clutch Rubber Smarties

Post by Mr Mike » Wed Apr 29, 2009 2:28 am

A guy told he he squeezes them in a pair of vice grips and then freezes them. The go in easy while still frozen. Never tried it myself.

Mr Mike

TomH
>280
>280
Posts: 289
Joined: Mon Apr 11, 2005 10:03 am
Location: Cambridge England
Has thanked: 0
Been thanked: 0

Re: Tips fitting Clutch Rubber Smarties

Post by TomH » Wed Apr 29, 2009 7:16 am

I put the 4 easy ones in first. Then I compressed the remaining ones in an adjustable spanner (the large jawed right-angle type) until their width was just less than the gap to go into; lined them up, put a screwdriver in the jaws behind them and pushed them in. A little lubrication helps too. :mrgreen:

HTH

Tom

ripellett
>80
>80
Posts: 84
Joined: Mon Oct 03, 2005 7:21 pm
Location: Sussex UK
Has thanked: 0
Been thanked: 0
Flag: England

Re: Tips fitting Clutch Rubber Smarties

Post by ripellett » Wed Apr 29, 2009 8:35 am

I pretty much do what Baz says.
My tool is the clutch locking tool, made of one friction and one plain plate welded or bolted together, with an 18" bar welded or bolted to it.
I have an old clutch hub welded to an old mainshaft which goes in the vice.
If your gearbox is apart you can fix your hub to your mainshaft with the woodruff, nut and washers and if you have allloy jaws in your vice you shouldn't damage anything. You still need at least one plain clutch plate but as has been said these tools are likely to get used again.
I don't use any lubricant.
Hope that helps
Roy in England

User avatar
gunnag
>740
>740
Posts: 757
Joined: Fri Oct 01, 2004 9:32 am
Location: farnham surrey
Has thanked: 0
Been thanked: 1 time
Flag: Great Britain

Re: Tips fitting Clutch Rubber Smarties

Post by gunnag » Wed Apr 29, 2009 12:03 pm

Cheers guys, lots of usefull suggestions :grin:

Actually, I was thinking about the freezing suggestion and think it might work. I guess you would have to compress the rubber in a clamp, freeze it while still clamped then while still frozen remove from clamp and pop it in the hub. I guess the rubber would hold its compressed shape until it thaws?

User avatar
Mark Cook
>1400
>1400
Posts: 4770
Joined: Fri Sep 10, 2004 8:45 pm
Location: CCM Britain HQ Goldthorpe South Yorkshire
Has thanked: 4 times
Been thanked: 1 time
Flag: England
Contact:

Re: Tips fitting Clutch Rubber Smarties

Post by Mark Cook » Wed Apr 29, 2009 2:32 pm

I'm shocked, it's really not that hard to do. I remember thinking it was first time around. By the time you do a few they almost fall in. Any one local to me that is struggling with them, I'd happily demo for them.

One thing to make sure about is that you don't use the ones that disolve in oil.

Mark
CCM Britain motorcycles and spares manufactured exclusively by PES

+44 (0) 1709 894192
http://www.ccm-britain.co.uk (online shopping experiance)

ripellett
>80
>80
Posts: 84
Joined: Mon Oct 03, 2005 7:21 pm
Location: Sussex UK
Has thanked: 0
Been thanked: 0
Flag: England

Re: Tips fitting Clutch Rubber Smarties

Post by ripellett » Wed Apr 29, 2009 4:07 pm

Mark,
'then WEADLE in the little buggers dry with a large blunt screwdriver'
Interesting that you use the Old English word that is both the noun for a beggar and the verb to beg. Strange how old words hang on in different parts of the country.
The more usual 'Wheedle' meaning to coax or cajole, is obviously derived from your usage especially as both versions implied an underlying dishonesty.
I've only ever encountered 'Weadle' because I read a lot of old books, yes even older than BSA manuals!
What chance some of our friends from overseas understanding us?
But back on topic:
I was shown the method I described by an ex Meriden worker a long time ago, when the rubbers came in two sizes, 4 large and 4 small. They completely filled the space available and compressed only very slightly under great pressure. I have heard it suggested that they effectively locked the centre solid and the 'chocolate buttons' were introduced to leave space to allow the rubber to actually deform under pressure and truly act as a shock absorber.
I agree with you they are relatively easy to fit.
Now I' m off to try and dissolve my rubbers in oil.
Roy in England

User avatar
minetymenace
Gerry1
Gerry1
Posts: 7430
Joined: Wed May 26, 2004 1:00 am
Location: On the edge of Salisbury Plain, England
Has thanked: 14 times
Been thanked: 50 times
Flag: England
Contact:

Re: Tips fitting Clutch Rubber Smarties

Post by minetymenace » Wed Apr 29, 2009 4:31 pm

“then WEADLE in the little buggers dry with a large blunt screwdriver'”
Interesting that you use the Old Pogle word that is both the noun for a small insect that eats rubber and the verb to relieve oneself. Strange how backward the inbred inhabitants of the outer reaches of Her Magisties Kingdom appear, but the modern spin is that they are quaint.
The more usual 'Wheedle' meaning to attempt to start a BSA single, is obviously derived from the typical usage:
“Them theres a wheedling ‘is Beesa”
Especially as both versions implied a rustic (or maybe rusty) double entendre for taking a leak (akin to scrumping apples (taking a leek :???: )) or attempting to start an old motorbike.
Seriously Chris, “weadles” are alive and kicking down in Wessex and I like to think the tone implies less scruples rather than less honesty.

Q. What chance some of our friends from overseas understanding us?
A. Two chances, rock all and none!!

Are "Smarties" international?
There is no evidence to support the notion that life is serious.
Abyssinian Wire-Haired Tripehounds Gnash.

ripellett
>80
>80
Posts: 84
Joined: Mon Oct 03, 2005 7:21 pm
Location: Sussex UK
Has thanked: 0
Been thanked: 0
Flag: England

Re: Tips fitting Clutch Rubber Smarties

Post by ripellett » Wed Apr 29, 2009 6:09 pm

Minty,
You seem to have confused me with my little brother Chris.
I'm the good looking intelligent one.
If weadles are alive and kicking in Wessex perhaps Chris could do with some.
Last time I spoke to him he had been 'Wheedling' and bent his kickstarter!
Smarties? Liqourice M&M's.
You've gotta larf.
Roy in England (not in Scotland)

User avatar
rhino
<1100
<1100
Posts: 1103
Joined: Tue Nov 11, 2008 8:40 am
Location: lancashire
Has thanked: 0
Been thanked: 0

Re: Tips fitting Clutch Rubber Smarties

Post by rhino » Thu Apr 30, 2009 2:56 am

<017 :laugh :laugh :laugh

User avatar
steve m
>1400
>1400
Posts: 2390
Joined: Sun May 06, 2007 3:22 am
Location: melbourne, australia
Has thanked: 0
Been thanked: 1 time

Re: Tips fitting Clutch Rubber Smarties

Post by steve m » Thu Apr 30, 2009 9:42 am

to mis-quote mark twain.
" two great counties, separated only by a common language". or some such twaddle, or is that tweedle, got to go, i'm bustin' for a piddle...in my own canoe, of course.

steve

User avatar
minetymenace
Gerry1
Gerry1
Posts: 7430
Joined: Wed May 26, 2004 1:00 am
Location: On the edge of Salisbury Plain, England
Has thanked: 14 times
Been thanked: 50 times
Flag: England
Contact:

Re: Tips fitting Clutch Rubber Smarties

Post by minetymenace » Thu Apr 30, 2009 11:46 am

Chris/Roy, sorry!
There is no evidence to support the notion that life is serious.
Abyssinian Wire-Haired Tripehounds Gnash.

User avatar
gunnag
>740
>740
Posts: 757
Joined: Fri Oct 01, 2004 9:32 am
Location: farnham surrey
Has thanked: 0
Been thanked: 1 time
Flag: Great Britain

Re: Tips fitting Clutch Rubber Smarties

Post by gunnag » Thu Apr 30, 2009 8:42 pm

Well I had a go at weedling in the little buggers in and either I havnt got the technique right or my rubbers are especially hard :(

I then tried the freezing technique. Using an old vice, I compressed 4 rubbers really tight and then placed the vice & rubbers in the freezer for an hour.

On removing the rubbers from the freezer all rubbers stay compressed while still frozen and can be fitted in the clutch instantly :ban

User avatar
Chris Pellett
>1000
>1000
Posts: 1061
Joined: Mon Oct 11, 2004 4:18 pm
Location: Sussex
Has thanked: 1 time
Been thanked: 0
Flag: Great Britain
Contact:

Weedle Bar

Post by Chris Pellett » Fri May 01, 2009 8:48 pm

DSCN7746.JPG
My Clutch locking tool: Twice as long as Roy's; only requires two fingers effort!
Chris

User avatar
steve m
>1400
>1400
Posts: 2390
Joined: Sun May 06, 2007 3:22 am
Location: melbourne, australia
Has thanked: 0
Been thanked: 1 time

Re: Tips fitting Clutch Rubber Smarties

Post by steve m » Sat May 02, 2009 12:57 am

now THAT's what i call a weedle bar.
next time i go a'weedlin' i'll know exactly what my equipement should look like. ;-) :grin: :thumb .
thanks chris.

steve

Norman_John
>160
>160
Posts: 165
Joined: Tue Jul 08, 2008 5:16 pm
Location: Nottingham, England
Has thanked: 0
Been thanked: 0
Flag: England

Re: Tips fitting Clutch Rubber Smarties

Post by Norman_John » Sat Mar 20, 2010 7:55 pm

Hi there,
Has anyone thought of using or has actually used a liquid cast silicone / rubber / neoprene for the shock-absorber?

I think you may be able to get a great result with a liquid as it will fill the whole hub cavity unlike the smarties. Also if you use a liquid, you can slightly offset the spider and create a thicker cushion section on the drive side where there is more need than on the over-run side.

I'd like to hear your ideas, and your stories of successes and failures!

Cheers
John

User avatar
b50root
Site Admin
Site Admin
Posts: 3314
Joined: Mon May 24, 2004 12:44 pm
Location: Malmö Scania Sweden
Has thanked: 64 times
Been thanked: 10 times
Flag: Scania Sweden
Contact:

Re: Tips fitting Clutch Rubber Smarties

Post by b50root » Sat Mar 20, 2010 8:25 pm

Hi John. I have also have that thought before but I was thinking Liquied Urethane.

I don´t belive in Neoprene ( to soft )
Rubber has to stand oil.

Rickard
nebrer on EBAY
nebrer at skype ( http://www.skype.com )

beat
>1400
>1400
Posts: 5540
Joined: Sun Jun 04, 2006 5:33 pm
Location: Switzerland
Has thanked: 0
Been thanked: 28 times
Flag: Switzerland

Re: Tips fitting Clutch Rubber Smarties

Post by beat » Sat Mar 20, 2010 9:02 pm

Norman_John wrote:thicker cushion section on the drive side where there is more need than on the over-run side.
wrong I say.
the force to the gearbox and primary drive is bigger from the rearwheel side then from the crankshaft side.
ore - has ever anyone shered of the wodroff key on the mainshaft wheilst speeding up the bike ?

for myself, I have brocken them always by shifting one ( ore two ) gear down by just touching the cluch a bit " short " :oops:

beat <213

Mr Mike
>880
>880
Posts: 889
Joined: Tue Feb 28, 2006 4:14 am
Location: North Carolina, US
Has thanked: 0
Been thanked: 1 time
Flag: United States of America

Re: Tips fitting Clutch Rubber Smarties

Post by Mr Mike » Mon Mar 22, 2010 1:43 am

I think Beat may be onto something here. Consider for a momeent how fast the the engine gets to higher rpms when you down shift. Then consider how fast the it happens when accelerating. Of course if you you use the clutch very hard on up shifting you might approach the same forces as a down shift.

On the other hand I have never stripped a woodruff key on the clutch.

Mr. Mike

User avatar
b50root
Site Admin
Site Admin
Posts: 3314
Joined: Mon May 24, 2004 12:44 pm
Location: Malmö Scania Sweden
Has thanked: 64 times
Been thanked: 10 times
Flag: Scania Sweden
Contact:

Re: Tips fitting Clutch Rubber Smarties

Post by b50root » Mon Mar 22, 2010 8:06 am

Think you wrong there.

If you compare the time 0 - 100 kmh with full throttle
or 100 - 0 with motor braking you will see that the power is much more on the acceleration.

Rickard
nebrer on EBAY
nebrer at skype ( http://www.skype.com )

beat
>1400
>1400
Posts: 5540
Joined: Sun Jun 04, 2006 5:33 pm
Location: Switzerland
Has thanked: 0
Been thanked: 28 times
Flag: Switzerland

Re: Tips fitting Clutch Rubber Smarties

Post by beat » Mon Mar 22, 2010 9:03 pm

b50root wrote:Think you wrong there
in my opinion, it is not the ascelerating nor the descelerating of the engine that counts, -it is the peack wich comes up by a fast " load change ".
in MX, the fastest load changes are done by doing a jump, wheilst in the hihgt, close trottle and reving the engine down, then , when the rear wheel comes to the ground the flywheel works as a breack-mass and the highest peack for the damper is on.
same effect by shifting gears down on road use. you can do it in the way as the black stripe on the bitumen indicates a very high peack, - and this in every gear !
can you do black stripes with your B50 by shifting gears up :?: if yes, how many horspower your engine counts :?: :shock: :shock: :shock:
beat <213

User avatar
b50root
Site Admin
Site Admin
Posts: 3314
Joined: Mon May 24, 2004 12:44 pm
Location: Malmö Scania Sweden
Has thanked: 64 times
Been thanked: 10 times
Flag: Scania Sweden
Contact:

Re: Tips fitting Clutch Rubber Smarties

Post by b50root » Mon Mar 22, 2010 9:46 pm

beat wrote:the fastest load changes are done by doing a jump
Yes you are probably right there. The problem for me is that I don´t think MX, just road driving .

Rickard
nebrer on EBAY
nebrer at skype ( http://www.skype.com )

User avatar
Mark Cook
>1400
>1400
Posts: 4770
Joined: Fri Sep 10, 2004 8:45 pm
Location: CCM Britain HQ Goldthorpe South Yorkshire
Has thanked: 4 times
Been thanked: 1 time
Flag: England
Contact:

Re: Tips fitting Clutch Rubber Smarties

Post by Mark Cook » Mon Mar 22, 2010 10:10 pm

I've been selling nitrile cush rubbers that we have custom made just for us, for many years now. These have a much higher oil resistance than the ones you can get from every other source. I'm puzzeled that I've never had a clutch hub back for a rebuild. They can't last for ever :?: :?: A little off topic, you don't get any cush rubber problems with the PES clutch ;-)

Mark
CCM Britain motorcycles and spares manufactured exclusively by PES

+44 (0) 1709 894192
http://www.ccm-britain.co.uk (online shopping experiance)

beat
>1400
>1400
Posts: 5540
Joined: Sun Jun 04, 2006 5:33 pm
Location: Switzerland
Has thanked: 0
Been thanked: 28 times
Flag: Switzerland

Re: Tips fitting Clutch Rubber Smarties

Post by beat » Tue Mar 23, 2010 8:44 pm

many years ago, my father has produced and sold the own made wheels and dumpers.
this was for engines with around 750 cc and around 70Hp. evan there, we had to realise as the bigger load is coming to the rubbers from the rear wheel side then from the engine side !
just counting the time, there it is in reverse : mostly is a load on the rubbers from the engine side, yes, - but the bigger peacks are from the rear wheel.
beat
( will see to find some pictures of the ones we made around 1973 )

User avatar
roadplough
<1100
<1100
Posts: 1191
Joined: Sat Nov 27, 2004 12:25 am
Location: Noosa, Australia
Has thanked: 0
Been thanked: 2 times

Re: Tips fitting Clutch Rubber Smarties

Post by roadplough » Wed Mar 24, 2010 3:31 am

Would it be the engine or the back wheel that could do this?

Image

After cleaning up the drum I'm pretty sure I replaced the broken spider tabs (for the photo) the way they were when I discovered this mess while attending to a gearbox problem. I'd no idea there was anything wrong with the cush 'till I noticed the pins were loose and the face plate was nearly adrift.
A set of Mark's buttons, 4 are ok but what remains of the other 4 can be seen spread about in granular form. The disintegrated buttons were squashed behind the broken tabs. Twaddley amazing.
Also the photo doesn't show the crack right through the width of the drum in one of the grooves.
The tab stubs are worn on both edges where they've been hitting the rounded bits, hard to say which direction cops the most abuse.
<215

User avatar
minetymenace
Gerry1
Gerry1
Posts: 7430
Joined: Wed May 26, 2004 1:00 am
Location: On the edge of Salisbury Plain, England
Has thanked: 14 times
Been thanked: 50 times
Flag: England
Contact:

Re: Tips fitting Clutch Rubber Smarties

Post by minetymenace » Wed Mar 24, 2010 4:29 pm

Roadie, from the way the lugs have sheared off, I'd say the back wheel driving the engine when they broke...
There is no evidence to support the notion that life is serious.
Abyssinian Wire-Haired Tripehounds Gnash.

User avatar
Mark Cook
>1400
>1400
Posts: 4770
Joined: Fri Sep 10, 2004 8:45 pm
Location: CCM Britain HQ Goldthorpe South Yorkshire
Has thanked: 4 times
Been thanked: 1 time
Flag: England
Contact:

Re: Tips fitting Clutch Rubber Smarties

Post by Mark Cook » Wed Mar 24, 2010 4:49 pm

I'm impressed Roady, at least they never went mushy.
CCM Britain motorcycles and spares manufactured exclusively by PES

+44 (0) 1709 894192
http://www.ccm-britain.co.uk (online shopping experiance)

beat
>1400
>1400
Posts: 5540
Joined: Sun Jun 04, 2006 5:33 pm
Location: Switzerland
Has thanked: 0
Been thanked: 28 times
Flag: Switzerland

Re: Tips fitting Clutch Rubber Smarties

Post by beat » Wed Mar 24, 2010 8:15 pm

a very impressing model it is !
for me, I can hardly beleve as the engine is such powerfull to do this.....
beat <017

User avatar
HPbyStan
>1400
>1400
Posts: 2897
Joined: Mon May 24, 2004 9:31 pm
Location: Janesville, Wi. USA
Has thanked: 1 time
Been thanked: 5 times
Flag: United States of America
Contact:

Re: Tips fitting Clutch Rubber Smarties

Post by HPbyStan » Thu Mar 25, 2010 7:45 am

Youse guys got me to wonderin.
Check out these ebay USA "gems"
#310110680470 '74 Aermacchi 175 40 hole rear hub. ( in '75 accountants redesigned it )
#350160143219 cush drive/brake/sprocket thingie.
#120254714120 shows the hub after the accountants had at it in '75 but also shows the rubber cush things.

Just a little "outside the box low buck thinkin"

User avatar
minetymenace
Gerry1
Gerry1
Posts: 7430
Joined: Wed May 26, 2004 1:00 am
Location: On the edge of Salisbury Plain, England
Has thanked: 14 times
Been thanked: 50 times
Flag: England
Contact:

Re: Tips fitting Clutch Rubber Smarties

Post by minetymenace » Thu Mar 25, 2010 1:26 pm

I know where you are comming from Stan, if you look half way down this page, you will see the rear hub Mark found for my beast. (I'll have to show you how to do links Stan!!)
There is no evidence to support the notion that life is serious.
Abyssinian Wire-Haired Tripehounds Gnash.

User avatar
HPbyStan
>1400
>1400
Posts: 2897
Joined: Mon May 24, 2004 9:31 pm
Location: Janesville, Wi. USA
Has thanked: 1 time
Been thanked: 5 times
Flag: United States of America
Contact:

Re: Tips fitting Clutch Rubber Smarties

Post by HPbyStan » Thu Mar 25, 2010 4:56 pm

minetymenace wrote:I know where you are comming from Stan, if you look half way down this page, you will see the rear hub Mark found for my beast. (I'll have to show you how to do links Stan!!)
Thanks Gerry, but showing me and teaching me may be two different things. It's a good thing I know "quite" a few things because I can't seem to learn another darn thing and at the rate I'm forgetting things,,,,,,,,,,,,,,ahhhh, don't remember where I was going with this.

User avatar
Mark Cook
>1400
>1400
Posts: 4770
Joined: Fri Sep 10, 2004 8:45 pm
Location: CCM Britain HQ Goldthorpe South Yorkshire
Has thanked: 4 times
Been thanked: 1 time
Flag: England
Contact:

Re: Tips fitting Clutch Rubber Smarties

Post by Mark Cook » Thu Mar 25, 2010 7:23 pm

Stan's first pic is the same as yours Gerry.
CCM Britain motorcycles and spares manufactured exclusively by PES

+44 (0) 1709 894192
http://www.ccm-britain.co.uk (online shopping experiance)

beat
>1400
>1400
Posts: 5540
Joined: Sun Jun 04, 2006 5:33 pm
Location: Switzerland
Has thanked: 0
Been thanked: 28 times
Flag: Switzerland

Re: Tips fitting Clutch Rubber Smarties

Post by beat » Thu Mar 25, 2010 9:03 pm

hi al,
a way to have a damper on the rear wheel was this:
Rad1.jpg
Magn. L rad mit Elast in Magn.
so the damper uses K*wasak* rubbers ,
Rad3.jpg
kawa 750 rubb.
NOTE : the rubbers are not outh of the centre of the press!
Rad4.jpg
rubbers centered in way of action
this lightweight stuff ( in Magnesium ) was used in sidecar MX and sidecar flattrack races.
the rubbers has shown, as the forces from the rearwheel are ad least as big as the ones from the engine side ! ( engine up to 90 HP ) yet, they have been evan bigger from rear !!
beat

Canberra
>1200
>1200
Posts: 1265
Joined: Fri Sep 03, 2004 11:45 am
Location: Canberra, Australia
Has thanked: 0
Been thanked: 9 times
Flag: Australia
Contact:

Re: Tips fitting Clutch Rubber Smarties

Post by Canberra » Wed Mar 31, 2010 9:52 am

Just spotted something.

For those of you with the P92 drawings take a look at the three spring clutch assembly and see which rubber is the biggest. That indicates where the biggest load is i.e. drive

John

Canberra
>1200
>1200
Posts: 1265
Joined: Fri Sep 03, 2004 11:45 am
Location: Canberra, Australia
Has thanked: 0
Been thanked: 9 times
Flag: Australia
Contact:

Re: Tips fitting Clutch Rubber Smarties

Post by Canberra » Wed May 26, 2010 12:21 pm

I purchased new retaining plate inner (I had a bad thread on one stud) and it came with 3 tapped holes and one drilled out. Probably a factory reject. I replaced the clutch centre and rubbers.

I put 4 rubbers in (2 opposing each side) singing that old english folk song "A Weadling I will Go" (I believe it was written some time ago by some wayward mintrel called Mark something or other) with lashings of soap and thought I would try to finish off with a flourish from the freezer. Put last 4 into a small vice, compressed them and popped in the freezer for half hour. Great - both methods work but second is better especially if you have forgotten the words of the folk song in frustration.

As a matter of interest the screws holding the inner and outer plates together are 2BA and not 1 BA in the 71 manual. I used 2 screws to tighten the plates and compress the rubbers sideways then fitted 2 rivets by drilling out the inner plate to suit with a rather hard drill, countersunk lightly, fitted the 2 rivets then removed the screws and did the same with the drills to put the remaining 2 rivets in.

I have a new clutch with clutch chainwheel and some new plates to go with it. I added an extra driving plate and the set up works very nicely with one of Marks pressure plates. I noticed I had to polish spring cups and slightly relieve the clutch centre where the 4 spring cups go as I found some resistance to movement. It works a treat now even with new springs it has a perfect sliding motion without straining my left hand.

John

User avatar
Mark Cook
>1400
>1400
Posts: 4770
Joined: Fri Sep 10, 2004 8:45 pm
Location: CCM Britain HQ Goldthorpe South Yorkshire
Has thanked: 4 times
Been thanked: 1 time
Flag: England
Contact:

Re: Tips fitting Clutch Rubber Smarties

Post by Mark Cook » Wed May 26, 2010 12:47 pm

Well done John. There is a section in the CCM manual about spending time with the clutch to get it just right, and commenting on the fact that it's well worth the effort.

Mark
CCM Britain motorcycles and spares manufactured exclusively by PES

+44 (0) 1709 894192
http://www.ccm-britain.co.uk (online shopping experiance)

Post Reply