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What else feels like clutch slip??

  • Thread starter Thread starter Anonymous
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Anonymous

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I have replaced both sets of plates and added a new clutch cable. I thought I could not get the clutch cable adjusted because it still felt like it was slipping. However, I have had a professional look at it and he made some minor adjustments and said the cable was perfect. I still have no power. Gs750 doing 70 mph in 5th gear at 7000 rpms. The engine sounds tight. What should I look for next??
 
Did you replace the clutch springs? They could be weak and not putting enough pressure on the plates. Did you soak your new fiber plates in oil before installation?
 
It can, but how about the things I mentioned? Even with friction additives you would think the clutch would perform better than it is. Most slip occurs under hard acceleration. Under constant throttle it should grab unless something is wrong.
 
20w50 regular castrol motor oil, new heavy duty springs, soaked the fiber plates in oil over night, very lightly sanded the new metal plates with 100 grit sand paper then wiped clean. Even the mechanic I took it to as the last resort was a bit stumped .
 
I was hoping someone might say you know there is a 100 mile break in time and then it will start to grab wish ,,,,wish!!!! :wink: :wink:
 
Possibly dumb question, but are you sure the tach is reading right?
 
Maybe the 750's are like the 1100's. There are two different thicknesses of clutch plates. In I think it was "82" the 1100 4 valve engines increased the # of plates. I'm thinking they made the plates thinner so they would fit in the same space as the earlier models. If your 750 plates aren't the correct thickness, that could cause a problem.
 
My tach is reading right, at least from the sound of it, it is screaming at 8500, I thought about plate thickness too, I did order the sets (fiber and metal) that were listed as fitting my specific year and model. I did keep the old plates (metal) but if I tried to add it where would I ??? I start with a fiber and end with a fiber, could you end with metal??? I probably sound stupid but can I put an extra metal together with the last metal and then end with a fiber??? :oops:
 
watching post carefully.. as I have some clutch slipage on my 83 750e
but havent replaced clutch yet...
one other thing I noted as a similariaty is the castrol oil... I used regular castrol as well (though I think I used 10/40)
please let me know if you do an oil change and it changes things...

Mitch
 
As a final stand I was going to go down to a 10w 40 oil as on the case. I know that may sound like a witch hunt, and the 20w 50 is probably fine, but after this I am thinking it is a basket issue . Could something in the basket be worn and causing the slipping or the gears around it???
 
Sparks you gonna stick to regular oil or switch to a "motor-cycle" oil?

Mitch
 
i've always used 20w50 Castrol in all my bikes, only time clutch slipped was when I put some Slick 50 in with it. Drained it out, went back with Castrol 20w50 and all was well again. I really don't remember how the extra plates were installed, but I think they did come up with metal to metal at one end.
 
What about the springs, that Billy asked about?

Chances are slim to none that oil is causing this. Castrol 20/50 and 10/40 are used by many on these boards.
 
springs are brand new, and I am not going to motorcycle oil as I don't think that will solve anything. I feel it really has to be another issue at this point but it is causing the clutch to slip on me or at least gives all the common symptoms of clutch slippage.
 
The last time I replaced a clutch (this summer) I had a similar problem. After I put it all back together following all torque specs, I hopped on the bike and went for a ride only to have the clutch slip exactly like the old one, which was visibly worn out. I started thinking what you're thinking... what else could it be??? Well I tore it all back down the next day only to find that the threads on one of the pressure plate bolts was galled up, giving me a false torque reading and keeping the clutch springs from doing their job. I cleaned up the threads and put it all back together and voila, new clutch grip.

This may or may not be your problem but it's worth a look.

I firmly believe in using motorcycle oil in motorcycles, some people have had good luck with car oils getting along with their clutch plates but I've personally seen clutch slip fixed just by switching to motorcycle oil from car oil. I don't think it's your problem now because your clutch is brand new but it will be cheap insurance down the road if you're going to keep the bike.
 
sparks said:
springs are brand new, and I am not going to motorcycle oil as I don't think that will solve anything. I feel it really has to be another issue at this point but it is causing the clutch to slip on me or at least gives all the common symptoms of clutch slippage.
Click to expand...

You're sure you not riding one of the hairiest 750's around and spinning that back wheel, right? 8O :lol: :lol:
 
Man I wish that was the issue!! I replaced the bolts on the pressure plate as per a suggestion on here when I first tore into the clutch. They were a bitch to get in , which is why I question if it would even be possible to add a plate if I needed to. Funny you spend $1000 dollars on a bike and put another $800 into it and still it needs more. It's like I married another wife and this one lives in my garage (my last bastion of hope).
 
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