What exactly causes a clutch to be glazed?
12-16-2003, 02:00 AM
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What exactly causes a clutch to be glazed?
With a new clutch, is it driving in high RPM's or dumping the clutch at high RPM's that's gonna glaze a new clutch?
12-16-2003, 02:06 PM
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Re: What exactly causes a clutch to be glazed? (Stock@$$GSR)
when a clutch is glazed it means that the frictional material on it has been heated to a point where it is smooth. Launching would more likely do this than driving at high RPM
12-16-2003, 02:27 PM
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Re: What exactly causes a clutch to be glazed? (boondockgtr)
i hope you're right, because after my engine rebuild, i'm gonna have a new clutch and flywheel. Within the first 20-30 miles, i'm going to have my car tuned on a dyno, so I'm hoping that reving the car into the high RPM's won't glaze my clutch.
Anyone else have any opinions or experiences on this? Thanks for the reply's
Anyone else have any opinions or experiences on this? Thanks for the reply's
12-16-2003, 03:05 PM
#5
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Re: What exactly causes a clutch to be glazed? (Stock@$$GSR)
I waited all day to see if someone else would kick in, not many so here goes (for an organic clutch material) ....
The glazing is coming from slipping at temperature. You start to liquify (a bit) the binder in the disk at temperature. That binder comes to the surface of the disk and get smeared around... where it resolidifes and gets "polished" by the flywheel and pressure plate. The end result is a glazed organic disk.
If taken to an extreme you can also change the microstructrue of the steel, and change its coefficient of friction...typically in the wrong direction.
Slipping at low temperatures will result in wear. The "glazing" phenomena is not directly an RPM issue. Its about how much energy is dumped into the thermal mass of the flywheel and pressure plate, that results in a temperature increase being maintained in the organic material. This is somewhat proportional to the differential speed of the input and output and the torque being transmitted.
Perhaps others will have a better description, or have specific experience with your setup and will share it. Hope this helps you some.
The glazing is coming from slipping at temperature. You start to liquify (a bit) the binder in the disk at temperature. That binder comes to the surface of the disk and get smeared around... where it resolidifes and gets "polished" by the flywheel and pressure plate. The end result is a glazed organic disk.
If taken to an extreme you can also change the microstructrue of the steel, and change its coefficient of friction...typically in the wrong direction.
Slipping at low temperatures will result in wear. The "glazing" phenomena is not directly an RPM issue. Its about how much energy is dumped into the thermal mass of the flywheel and pressure plate, that results in a temperature increase being maintained in the organic material. This is somewhat proportional to the differential speed of the input and output and the torque being transmitted.
Perhaps others will have a better description, or have specific experience with your setup and will share it. Hope this helps you some.
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