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Doubt about clutch

Started by GAS, October 13, 2009, 08:36:56 PM

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GAS

Hello!

I'd like to know if what is happening with my GS is normal, because I think it should be different:

1- When in center stand and Neutral position the rear whell will not spin (So far so good).
2- When I put 1st or 2nd or any gear and HOLD the clutch lever all the way, the rear wheel spins (about one spin per second on 1st gear), what is strange TO ME.
3- When I release the clutch lever the rear wheel spins a lot faster, which I obviously think normal.

In a car (stick transmission) I know item 2 shouldn't occur so with the clutch pedal down the wheel should not spin, but thinking in all the oil and friction plates inside a bike gearbox maybe it is normal, I really don't know how a bike gearbox really works. Any light?

Tks!

jeremy_nash

that is happening due to the oil between the clutch disks.  there is a little residual drag even when the clutch is pulled in.  it doesn't happen on a car, because they have a dry clutch
gsxr shock
katana FE
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150-70-17 pilot road rear
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DoD#i

Stop abusing your bike. I class putting it in gear on the centerstand with the engine running under that heading. Among other things it eats the hell out of the chain buffer. Stop. Next thing you'll be doing it trying to clean the chain with a rag while the engine runs, and that's been proven to be a bad thing for your fingers.

It's a wet clutch. You get hydraulic coupling.

Does the damn thing work when you ride it, off the centerstand? Then it's fine.

Stop abusing it.
1990 GS500EL - with moderately-ugly paintjob.
1982 XJ650LJ -  off the road for slow repairs
AGATT - All Gear All The Time
"Ride a motorcycle.  Save Gas, Oil, Rubber, Steel, Aluminum, Parking Spaces, The Environment, and Money.  Plus, you get to wear all the leather you want!"
(from DoD#296)

GAS

Quote from: DoD#i on October 13, 2009, 08:50:47 PM
Stop abusing your bike. I class putting it in gear on the centerstand with the engine running under that heading. Among other things it eats the hell out of the chain buffer. Stop. Next thing you'll be doing it trying to clean the chain with a rag while the engine runs, and that's been proven to be a bad thing for your fingers.

It's a wet clutch. You get hydraulic coupling.

Does the damn thing work when you ride it, off the centerstand? Then it's fine.

Stop abusing it.

Wow! I just put it in gear on the centerstand to see how much it was dragging. I've felt it before, while riding and I wanted to see what was happening so I could ask somebody if it's normal.

The damn thing works just fine off the centerstand, but I wouldn't like to have to premature change a clutch for a new one,  if this dragging wasn't supposed to happen.


gregvhen

uh yea I think DoD#i comment was alittle un called for.  Hes all  >:(

But about the wheel spinning, like jeremey said, its cause its a wet clutch and it happens on all bikes. even the big police bikes! :D  we have a few at my tech school. theyre pretty fun to mess around with the lights.   Oh but I hope Im not abusing the bike when I do that!  :o

the mole

Yeah, its normal, don't worry. Only bikes that don't do it are ones with dry clutches, like twin BMWs and Guzzis. You'll notice it more when the motor is cold, as the thick cold oil has more drag. That's why the first time you put it in gear after a cold start it clunks. Also why you shouldn't start it in gear when its cold, the starter has to work too hard.

BaltimoreGS

It's not just the wet clutch.  If you have a manual transmission Toyota on a lift with the engine running in neutral the front wheels will spin a little bit.  Nothing to worry about on your bike as long as your clutch cable is properly adjusted.

-Jessie

ohgood

Quote from: BaltimoreGS on October 22, 2009, 06:00:16 PM
It's not just the wet clutch.  If you have a manual transmission Toyota on a lift with the engine running in neutral the front wheels will spin a little bit.  Nothing to worry about on your bike as long as your clutch cable is properly adjusted.

-Jessie

+1 trucks with standard transmissions (and some front wheel drive cars) will spin the wheels wwhile in neutral. or with the clutch depressed. bearings are great, but not perfect, and most have 100,000 miles on them... so they transfer 1/billionth of the torque to the wheels.

your gs is fine, on other fronts :)


tt_four: "and believe me, BMW motorcycles are 50% metal, rubber and plastic, and 50% useless

gregvhen

ohgood, i always forget to ask you, what camera did you use and what lens for your signature pic?

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