Matt21
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| posted on 18/5/17 at 08:36 PM |
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CBR900 clutch
I'm having a little trouble lately with my clutch.
It's ok 95% of the time with just me in the car, but if there's a passenger it slips a fair bit!
It's currently either got standard plates and heavy duty springs, or EBC SRC plates and heavy duty springs (I cant remember which I put in!)
Has anyone tried any other clutches with success?
I'm looking at the EBC SRK kit that comes with kevlar friction plates and heavier springs. ~£95
Other option is just to go for a 2-stage lock-up clutch ~£250
Does anyone have experience with the lock-up clutches? I get the impression they're pretty hard going on the clutch basket, ie, gouging into the
alloy? or do they not 'dig in' as I think they will?
any suggestions?
Instagram: @matt211988
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My YouTube
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mark chandler
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| posted on 18/5/17 at 09:13 PM |
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My car has a lock up clutch, only needed if you get it to over 175 BHP, it's designed for the torque of the engine so it really should not
matter so i suspect you have something else amiss.
The fingers push on the back of the plate, it does not need a lot of weight to hold 200hp with standard springs.
£250, then add a 1" spacer and extend the rod, it will end up being nearer £400.
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ReMan
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| posted on 18/5/17 at 09:16 PM |
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I'm I recall std plates are as good as anything with uprated springs. my experience has been ok, but they don't last forever in a car
www.plusnine.co.uk
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motorcycle_mayhem
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| posted on 18/5/17 at 09:34 PM |
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Lock-up clutches (GSXR750 engine in my case) have not had a detrimental affect on the basket. The clutch inner sleeve gets a hard life, notches, and
then the clutch gets a bit grabby, but no more so than without the lock up.
Clutches are consumables, it doesn't take much (worn/glazed friction plates, warped/burnt steels, old compressed springs, etc.) before things
slip.
Kevlar plates have a lower coefficient of friction than the originals, so the springs must be superb for them to work. My experience with some springs
is that they aren't rated at what the manufacturers say they are. Measure your springs (length and gauge), test them, measure the compression in
the basket and see what comes out as the strongest. New plates will increase the pack height too, all good things.
I would recommend Barnett springs and standard OE friction plates and steels.
As for the lockup, yep, it works for me. Issue is releasing it, pushrod stresses are phenomenal when the engine is pushing the counterweights. Release
gear needs to be in very good condition to cope.
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olimarler
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| posted on 19/5/17 at 07:42 AM |
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Hi, got an older cbr1000f in mine.
Good high quality oil and standard plates updated springs do the job perfectly.
I'd go that direction :-)
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Matt21
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| posted on 19/5/17 at 09:43 PM |
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What oil would you recommend?
I think it's motul 5100 10w40 I have in at the moment
Instagram: @matt211988
Photobucket
My YouTube
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olimarler
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| posted on 20/5/17 at 06:08 AM |
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quote:
Originally posted by Matt21
What oil would you recommend?
I think it's motul 5100 10w40 I have in at the moment
http://www.opieoils.co.uk/p-812-silkolene-pro-4-10w-40-xp-ester-full-synthetic-4t-bike-engine-oil.aspx
Think it was this one they recommend
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mark chandler
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| posted on 20/5/17 at 06:41 AM |
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I run mine on Halfords semi synthetic bike oil, just change it every year, when I blew the gearbox so had to strip down the mains all looked perfect
even after turbo beating the he'll out of it.
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