Clutch Slip

[Liono]

Probably a bit of a daft question, but what exactly is clutch slip? Not as in slipping the clutch when moving slowly, but as in "I was accelerating away and the clutch started to slip"?

[Villers]

My RS125 needed new clutch plates when I got it, it would slip under accelleration. You would feel the bike begin to lose steam but the revs would start going ape shit and then if they bit the bike would surge a bit! HTH.
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RS125 > CBR6 > SV650S > ZX636R > GSX1300RZ Hayabusa > 06 RSVR Mille > SV1000S > Street Triple 765 RS

[tatters]

caused by:

worn clutch plates
ill adjusted clutch cable
fully synfectic engine oil (can happen on some bikes, or on bike using replacement EBC clutch plates)



a clutch kit is about £40 which would include 6-7 friction plates and possibly replacement springs (not really needed). changing the plates on most jap bikes is quite easy with a bit of common sense.
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Past:NRG50,AF1125(x2),NSR125RR,ZZR250,CX500,VFR400,KR1S,ZZR600(x2),CB400N,YZF1000(x2),KH125,Z200,FX400R,CBR954RR(x2)GPZ500S,GT550,VFR750F(x2),RD350N,XR650R,CBR600F,CB250,KDX250,YZF750R,CRM250,400EXC,KLR650,TTR600RE,DR350S,R100GSPD,RGV250,VMAX1200,DL650,KZ750 Present:G650XC,C12,CRF450X,1190ADV

[pipnet11]

Without trying to be cocky, its when your clutch slips. Feels strange when it happens, which on classic bikes is quite often. In gear, open throttle, revs go up but your speed doesnt, or not as much as the engine anyway. Basically its when the clutch can not handle the amount of power/torque that the engine is trying to put through it.
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[nick.h]

Is it like when the bike slips out of gear?

Because i think this is what happening to my bike.

It happens every time i go out on it, i'll be riding along, in forth say, and then the revs will go apeshit, ill pull in the clutch, then select the gear and it will be fine again.

It did while i was slowly riding behind a rs125, he thought i wanted to race him

Nick
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[Italjet MM5A] ll [Rieju RS1 Evolution] ll [Suzuki GS500e] ll [Suzuki GSX600F] ll [Honda CG125] ll [Pug Elyseo 125] ll [Yamaha YZF750R] ll [Yamaha Thunderace] ll [Yamaha R6] ll [Triumph 955i] ll [Hayabusa RZK3] ll [Suzuki RGV250] ll

[Villers]

Could be a possibility mate but it would do it under load in every gear if your clutch was on its way out!
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RS125 > CBR6 > SV650S > ZX636R > GSX1300RZ Hayabusa > 06 RSVR Mille > SV1000S > Street Triple 765 RS

[Liono]

[Wave2k]

my bike is doing it atm
give it a handfull and at 10,000rpm it slips and shoots to the redline
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Ducati 1299 Panigale
2009 Corvette C6 z51
RS125->CBR400->RXS100->GSXR750K2->Ducati749S->CBR600RR5->TL1000R->DRz400->RSVR1000->Honda VTR SP1->CBR400->GSXR1000K6->Honda H100->CBR600RR3->Ducati1299

[White Noise]

mine is doing it, i think!
newish clutch so i think that the cable needs adjusting!
WN
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[Kickstart]

Hi

As above. Tends to happen more in the high gears, up hill, full throttle, etc.

If it is doing it in a particular gear it tends to suggest something else.

All the best

Keith
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[Davo]

I found out the clutch was slipping on the busa, when I decided to show some Merc AMG that he couldn't out accelerate a busa, the clutch slipped then bit, producing a rather spectacular wheelie.

One way I test for clutch slipping is to trundle along slowly, put it into third then crack the throttle fully open (be sure to cover the rear brake in case it does the above)

[Dom_]

Mine does it like mad when cold.

[Visitor Q]

[Davo]

[Visitor Q]

[stinkwheel]

[mchaggis]

You can get the effect by maladjusting your clutch so it never properly quite engages fully. It's fine until you get to a hill or unless you accelerate vaguely enthusiastically. I could explain it in technical detail if you want, but I can't be arsed.

It's not exactly a hard concept to grasp anyway, mainly just to do with the clamping force and the coefficients of static and dynamic friction. Other factors are the amount of torque you're applying to the clutch, the difference between engine and wheel speeds, the amount of meat left on the plates, and the adjustment mechanism.

Are hydraulic clutches self-adjusting? I'd have thought so.
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[Suzuki]

[tatters]

[Suzuki]