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Gwilym Inspector
Joined: 04 Oct 2007 Posts: 139 Location: Tadley,Hants.
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Posted: Mon Sep 29, 2008 7:21 pm Post subject: clutch worn |
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I think my clutch is on the way out (9500 miles,is that normal?) so looking for a replacement.
Is it worth going for the polini one,i see PM sell them?
Any idea on the cost of a standard one and best place to get one from?
Thanks for any help |
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GWGTS250ie Site Admin
Joined: 19 May 2007 Posts: 980 Location: Swimming with Endorphins !!
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Posted: Mon Sep 29, 2008 8:12 pm Post subject: |
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has anone tryed these from pm ,and do they make any difference to speed _________________ The Instigator ,
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AIRMECH Inspector
Joined: 05 Jan 2008 Posts: 260
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Posted: Mon Sep 29, 2008 9:09 pm Post subject: |
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Got one fitted in my GT,no difference,but cheaper than a std clutch,only difference is it doesn`t have a coolng fan on it |
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monty9120 Guvernor
Joined: 15 Nov 2007 Posts: 861 Location: North London
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Posted: Tue Sep 30, 2008 12:30 am Post subject: |
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AIRMECH wrote: | Got one fitted in my GT,no difference,but cheaper than a std clutch,only difference is it doesn`t have a coolng fan on it |
What you mean this one
_________________
GILERA NEXUS 500
DANGER HIGH VOLTAGE!!!!!
NORWICH BROADSMEN SC |
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smudger Guvernor
Joined: 07 Oct 2007 Posts: 1066 Location: The Wirral; the bit of land between the Mersey and the Dee
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Posted: Tue Sep 30, 2008 5:59 am Post subject: |
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I haven't seen too many aftermarket parts that seem to offer big improvements.
I currently have a J Costa variator which has added a bit of zip 0-40ish but lost some 50-80, so I'm going back to the original this weekend when I get a new belt.
PM exhaust is great for looks and noise though _________________
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martin68 Sargeant
Joined: 09 Jun 2008 Posts: 91 Location: saltash, cornwall
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Posted: Tue Sep 30, 2008 6:15 am Post subject: |
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My experience of messing with the clutch is that you gain no extra performance but can alter the characteristics of take off dramaticially i.e by altering spring tension you will require more rpm for the clutch to bite, great on a tuned 2-stroke for scary take-off. I expect some aftermarket clutchs will reduce friction loss or have slightly altered pulley angles but doubt they offer much in the way of performance gain. |
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CheekyThomas Guvernor
Joined: 18 May 2007 Posts: 1374
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Posted: Tue Sep 30, 2008 2:15 pm Post subject: |
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Its suprising to see one be worn that quickly... normally they will do double that.. are you sure it doesnt just need a service
Performance clutches offer a upgrade in friction material, but this is also means shorter life for the clutch drum, some offer adjustable spring pressure which allows you to decide at what RPM the clutch engages at and some claim improved responce from the fact they are lighter so spin quicker...
You wont see a speed increase unless yours is slipping though so dont expect miracles from one.... |
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Gwilym Inspector
Joined: 04 Oct 2007 Posts: 139 Location: Tadley,Hants.
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Posted: Tue Sep 30, 2008 4:47 pm Post subject: |
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CheekyThomas wrote: | Its suprising to see one be worn that quickly... normally they will do double that.. are you sure it doesnt just need a service |
Be nice if its that
What does that involve? |
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CheekyThomas Guvernor
Joined: 18 May 2007 Posts: 1374
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Posted: Tue Sep 30, 2008 5:28 pm Post subject: |
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Take it off, and blow it over with compressed air, youll find lots of dust comes out, then deglaze the friction shoes and if you have some, give them a spray with a solvent cleaner like brake cleaner... make sure you also clean out the clutch drum and deglaze that as well!...
If its over 2 years old you should also regrease the twisting pivots on the torque drive pulley, but its more involved as involves stripping the clutch unit down....
Youll find if you just do the first bit, it makes a hell of a difference... the build up of friction shoe dust that sticks to the clutch actually acts as a lubricant and over time generates slipping and juddering... |
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Gwilym Inspector
Joined: 04 Oct 2007 Posts: 139 Location: Tadley,Hants.
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Posted: Mon Oct 06, 2008 8:30 pm Post subject: |
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Thanks Cheeky,cleaned the clutch up and problem solved |
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CheekyThomas Guvernor
Joined: 18 May 2007 Posts: 1374
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Posted: Mon Oct 06, 2008 8:42 pm Post subject: |
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Thought it might do... autos love a clutch clean |
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Blackpool Paul Guvernor
Joined: 28 May 2007 Posts: 531 Location: Blackpool
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Posted: Sun Oct 26, 2008 11:04 pm Post subject: |
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Took my GTS in as it was starting to judder on launch, it was ready for its 3rd service, its done just over 8000mls, there not a bad set locally, and let me watch with a mug of tea too! replaced the belt £44 cleaned the clutch, and de glazed it, the variator and rollers were just showing signs of wear, but didnt have replacements, so they went back in after a bit of cleaning, {green colour} changed the air filter, oil filter and oil, I didnt think that was bad for £150, still could have done without spending it just now. Any comments CT? Id be interested in any price comparisons. _________________ GTS250 its the future!!! A club wi owt a name sc. Bamberbridge. |
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CheekyThomas Guvernor
Joined: 18 May 2007 Posts: 1374
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Posted: Mon Oct 27, 2008 8:11 pm Post subject: |
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Yeah its a decent enough price, we do fixed price services on the 250s at £159 for the big one with belt, rollers, guides, filters, fluids and valve clearances etc.. includes everything apart from tyres. |
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