Clutch Slipping =[

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v1nn13
Posts: 26
Joined: Sat Dec 17, 2011 6:26 pm
My Bike: ZXR400 H1
Location: Ashford, Kent

Clutch Slipping =[

Post by v1nn13 » Wed May 29, 2013 7:05 pm

Hi guys, having a slippery problem with my clutch since replacing the friction plates and springs on my H1. When i took off the cover first of all, it was a complete mess! steels stacked and washers on the springs =/. So i removed all plates and put the new frictions in, alternating between steels and frictions, starting with friction and ending with friction on the off-set tang (soaked these in oil overnight). I also found i had to use one old friction to fill the clutch basket :smt017. This meant i now have 7 frictions and 6 steels (Is this the correct amount?) i then put the springs back on with just the original washers and torqued them up...only problem is, she now slips :smt010
I have replaced the oil with 10w/40 motorcycle oil with a new filter, as it was overdue and found this could be the cause, but still she slips.
Steel plates are not warped and measure on the vernier at 1.6 mm, which upon research, appear to be the steel plates from the J1 model if im correct? All springs are brand new EBC heavy duty and are well within tolerance.
Just double checking if i need to replace the steels for the 2.3mm ones in order to cure cure the problem?
Also i have a mate with a spare clutch assembly from an L9, will the basket from the L fit my bike? and are the steels the same on the L as the H?

Many Thanks
Vinnie

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v1nn13
Posts: 26
Joined: Sat Dec 17, 2011 6:26 pm
My Bike: ZXR400 H1
Location: Ashford, Kent

Re: Clutch Slipping =[

Post by v1nn13 » Wed May 29, 2013 7:08 pm

Don't know whether she has the J clutch as it would appear that's where these steels came from. Just a bit stuck on what to do at the moment, any help would be appreciated
Last edited by v1nn13 on Tue Oct 15, 2013 6:04 am, edited 1 time in total.

adamm1704
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Re: Clutch Slipping =[

Post by adamm1704 » Thu May 30, 2013 1:08 am

Have you used fully synthetic oil? if so that can cause clutch slip.

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v1nn13
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Joined: Sat Dec 17, 2011 6:26 pm
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Re: Clutch Slipping =[

Post by v1nn13 » Thu May 30, 2013 9:03 am

Nope used semi

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banner001
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Re: Clutch Slipping =[

Post by banner001 » Thu May 30, 2013 9:19 am

if your steels are 1.6mm each, then 5x1.6 = 8mm, your steels should be 2.3mm, so 5x2.3=11.5mm; 11.5mm - 8mm is the amount you are missing from your stack height which is 3.5mm, and with 1 friction plate being ~2.9mm this is why you are needing the extra friction plate to get close to a proper stack height, get brand new proper steels (they are cheap enough from cradley's) and reassemble everything, torque the springs (i think its fairly low, 12Nm off the top of my head) and see if its better now...it should be :D
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v1nn13
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Joined: Sat Dec 17, 2011 6:26 pm
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Re: Clutch Slipping =[

Post by v1nn13 » Thu May 30, 2013 11:26 am

I see what your saying by I've had to use a sixth steel also to account for the extra thickness. I calculated the unsprung stack height for 6x1.6+7x2.9 being +1mm more than the 5x2.3+6x2.9? So wouldn't that have the opposite effect?

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v1nn13
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Re: Clutch Slipping =[

Post by v1nn13 » Tue Oct 15, 2013 6:01 am

Late reply,
got the proper plates... all back together works a treat :excited

Cheers

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