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Old 10-07-2008, 02:38 PM   #11
PhiSig1071
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I assume that with the extra plates and oil, wet clutches add more weight as well right?
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"Wet" Clutches are more consistent in operation and have a longer service life due to a more consistent operating temperature, however they have more tendency to slip due to the fluid they are in, thus they require more friction plates. This causes a greater parasitic loss through the clutch due to the resistance of the fluid and the increased mass of more plates. Dry clutches are pretty much the opposite, they are not as consistent and they don't last as long, but they cause less parasitic loss because of fewer plates and less rotating resistence.
Yep, sure do. Although the oil difference is minimal, and the weight doesn't have as much of an effect on handling as it does the parasitic loss in the drivetrain. Total weight difference is no more than a few lbs, if that.
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Old 10-07-2008, 03:11 PM   #12
BobTheBiker
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this is what I was wondering pretty much. thanks.
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Old 10-07-2008, 03:13 PM   #13
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No Problem!
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Old 10-07-2008, 03:45 PM   #14
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The problem with dry clutch is that they drag badly when they heat up. The advantage is that they engage positively.

So, for a race bike, dry clutch doesn't hurt, but for a street bike, dry clutch bites the big one.
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Old 10-07-2008, 05:06 PM   #15
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Good insight, Phi.
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Old 10-07-2008, 06:18 PM   #16
PhiSig1071
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Good insight, Phi.
Thanks!

I have to have some use for some of this knowledge! Otherwise I'm just a dork and a weirdo.
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Old 10-07-2008, 10:52 PM   #17
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Dry clutches sound like shit, but elitist folks with italian bikes like to think they sound nice.

I for one do not like a bike that idles with the sound of a can of nuts and bolts being shaken vigorously. Sounds retarded.
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Old 10-07-2008, 11:02 PM   #18
PhiSig1071
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Dry clutches sound like shit, but elitist folks with italian bikes like to think they sound nice.

I for one do not like a bike that idles with the sound of a can of nuts and bolts being shaken vigorously. Sounds retarded.


You should hear an OLD harley! They have open chain primaries, holy hell, it sounds like $50 worth of bolts in a paint-shaker!
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Old 10-08-2008, 12:32 AM   #19
BobTheBiker
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oh god I cant stand that dry clutch sound. I'd be tearing my bike apart for no reason at all thinking the motor is gonna throw rods or something every 5 mins.
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Old 10-08-2008, 03:28 AM   #20
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the funny thing is, the first time I ever heard a dry clutch was at Indy walk'n in with NtS and everyone... and I remember turning to NtS and being like... fuck... that bike sounds like SHIT...
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