Slipper clutch

There seems to be more and more members appearing that are racing the ZXR400 so i've created a special section just for you to show off results, discuss meets etc etc.

Moderator: Moderators

Post Reply
kermit the frog
Posts: 142
Joined: Wed Mar 19, 2008 8:00 pm
My Bike: zxr400 L9

Slipper clutch

Post by kermit the frog »

ive heard a rumour that the zxr400 has a very basic slipper clutch, is this thrue?

also does anybody now how to get a zxr400 or any bike backing into a corner?
never give up!
User avatar
Ballsout Racing
L-plate hell
L-plate hell
Posts: 386
Joined: Sun Nov 07, 2004 11:04 am
My Bike: tomos moped
Location: Most race circuits ;-)

Re: Slipper clutch

Post by Ballsout Racing »

I have heard that they are, but, I've never heard of anyone in the racing world that has actually got one set up to work. I've had my clutch slipping on the power and yet it does not work as a slipper clutch. When you read this: http://homepage.ntlworld.com/webzxr/zxr750r/, that tells you how to 'tune' it to work, you'll understand why I said what I did and am not sure at all that they actually are a slipper clutch in the 400 :smt002

As for backing it in, I would suggest that you've got a lot more to learn before you try doing that, you'll end up on your arrse for sure. But, brake very hard so that the rear tyre is hovering/sliding over the tarmac, then start turning the bike (as a matter of fact, doing that will show you how obviously you are countersteering :smt002 ), the back will start coming around, then ease off the brakes to controll it. Or/and use some rear brake to get the same effect. Good Luck :smt002 , I would suggest trying it in an empty car park, and take some spare levers with you :smt002 Oh, and it'll be a lot more difficult doing it from 100+mph into a, say, 60mph corner and carry a decent corner speed, doing it all smoothly, and not come off :smt002

One final point, Why? you gain nothing, the only thing that it may help with is to make yourself wider going into a corner so that anyone behind you won't so easily be able to sail past you into the corner :smt002 , although I do admit it looks good :smt003
kermit the frog
Posts: 142
Joined: Wed Mar 19, 2008 8:00 pm
My Bike: zxr400 L9

Re: Slipper clutch

Post by kermit the frog »

yeh i do agree, i have very,very much more to learn, i just wondered how to do it thats all, i wont try it on the road!!
never give up!
zimm
zxr400 oc member
zxr400 oc member
Posts: 2320
Joined: Tue Oct 10, 2006 12:32 am
My Bike: ZXR400-M4, ZX4, ZX6R.
Location: Herefordshire

Re: Slipper clutch

Post by zimm »

Ballsout Racing wrote:I have heard that they are, but, I've never heard of anyone in the racing world that has actually got one set up to work. I've had my clutch slipping on the power and yet it does not work as a slipper clutch. When you read this: http://homepage.ntlworld.com/webzxr/zxr750r/, that tells you how to 'tune' it to work, you'll understand why I said what I did and am not sure at all that they actually are a slipper clutch in the 400 :smt002
they do work, but need time consuming fiddling and the random factor..

had an L engine (they were only fitted to L's) in an H2, and that worked so well that you couldn't bumpstart the bike at all, but it didnt slip under power one bit. The stock clutch in my L4 was ostensibly the same, but set so tight the back would chatter and lock all over the place.
rover220
zxr400 oc member
zxr400 oc member
Posts: 613
Joined: Sun Oct 21, 2007 12:24 pm
My Bike: zx7r p6
Location: Stafford

Re: Slipper clutch

Post by rover220 »

zimm wrote:
had an L engine (they were only fitted to L's) in an H2, and that worked so well that you couldn't bumpstart the bike at all, but it didnt slip under power one bit. The stock clutch in my L4 was ostensibly the same, but set so tight the back would chatter and lock all over the place.
it does indeed chatter all over the place yeah and likes to lock too. :smt003
Image
d00ner
Posts: 30
Joined: Tue Jun 10, 2008 12:12 pm

Re: Slipper clutch

Post by d00ner »

n00b question here.. what is a 'slipper' clutch ? as opposed to a normal one?
the graveyard: honda h100(red) gilera dna 50(yellow) kawasaki kx125 (green) honda crf 450(black) x-sport(orange)
User avatar
RedexRobB
Site Admin
Site Admin
Posts: 7212
Joined: Fri Aug 30, 2002 7:37 pm
My Bike: ZXR400L3
Location: Ipswich, Suffolk

Re: Slipper clutch

Post by RedexRobB »

a slipper clutch prevents rear wheel lockups when you downshift to the next gear, it does this by allowing the plates to slip when off the throttle but not allowing when accelerating.
kermit the frog
Posts: 142
Joined: Wed Mar 19, 2008 8:00 pm
My Bike: zxr400 L9

Re: Slipper clutch

Post by kermit the frog »

does the L9 have one?
never give up!
User avatar
masterofinsanity
Site Admin
Site Admin
Posts: 8111
Joined: Thu Aug 29, 2002 12:36 am
My Bike: Aprilia Tuono Fighter
Location: England
Contact:

Re: Slipper clutch

Post by masterofinsanity »

well i know mine aint got one after locking up in the wet this morning. ontheloo
Don't forget people there is more to the zxr400 than this forum... check out www.zxrworld.co.uk also.
kermit the frog
Posts: 142
Joined: Wed Mar 19, 2008 8:00 pm
My Bike: zxr400 L9

Re: Slipper clutch

Post by kermit the frog »

you dont make it sound pleasant
never give up!
User avatar
noelb
Posts: 61
Joined: Tue Oct 16, 2007 1:02 pm
My Bike: ZXR4H , H'Berg , BMW R12S
Location: Oirelannnnddd!, D'middle'o'

Re: Slipper clutch

Post by noelb »

Did you have to buy the thinner plates to set it up or is there an easier way - thinking of getting an L one for my H race bike.....

Noel B.
User avatar
masterofinsanity
Site Admin
Site Admin
Posts: 8111
Joined: Thu Aug 29, 2002 12:36 am
My Bike: Aprilia Tuono Fighter
Location: England
Contact:

Re: Slipper clutch

Post by masterofinsanity »

Don't forget people there is more to the zxr400 than this forum... check out www.zxrworld.co.uk also.
User avatar
ray66ross
Posts: 8
Joined: Sat Jul 05, 2008 11:04 am
My Bike: ZXR400L-race Street3-road

Re: Slipper clutch

Post by ray66ross »

zimm wrote:
Ballsout Racing wrote:I have heard that they are, but, I've never heard of anyone in the racing world that has actually got one set up to work. I've had my clutch slipping on the power and yet it does not work as a slipper clutch. When you read this: http://homepage.ntlworld.com/webzxr/zxr750r/, that tells you how to 'tune' it to work, you'll understand why I said what I did and am not sure at all that they actually are a slipper clutch in the 400 :smt002
they do work, but need time consuming fiddling and the random factor..

had an L engine (they were only fitted to L's) in an H2, and that worked so well that you couldn't bumpstart the bike at all, but it didnt slip under power one bit. The stock clutch in my L4 was ostensibly the same, but set so tight the back would chatter and lock all over the place.
Hello mate - Have been busy racing as much as poss this year - all East fortunr events, Knockhill, and even managed a Croft - what a track!!!!

During all this managed to drop a valve ay East fortune, new engine purchased off fleebay, it has a slipper clutch , but i think the stack is too high for it to work as a slipper , do you know of anyone who can tell me the best height of stack of plates for racing?
Fatspanner #66
Post Reply