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Big Rig
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« on: December 04, 2018, 05:54:09 PM » |
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Had a holiday parade this past weekend...night parade, lots of lights on the bike...looked awesome....not pictures...
any way, bike would engage but clutch level movement to engage was minimal...
Thoughts???
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Cracker Jack
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« Reply #1 on: December 04, 2018, 06:11:16 PM » |
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I think it was probably a CHRISTMAS parade.  |
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98valk
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« Reply #2 on: December 04, 2018, 06:40:51 PM » |
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Had a holiday parade this past weekend...night parade, lots of lights on the bike...looked awesome....not pictures...
any way, bike would engage but clutch level movement to engage was minimal...
Thoughts???
clutch damper plate is going out. rivets have failed sounds like. |
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1998 Std/Tourer, 2007 DR200SE, 1981 CB900C 10speed
1973 Duster 340 4-speed rare A/C, 2001 F250 4x4 7.3L, 6sp
"Our Constitution was made only for a Moral and Religious people. It is wholly inadequate to the goverment of any other."
John Adams 10/11/1798
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ridingron
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« Reply #3 on: December 09, 2018, 11:18:58 AM » |
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Clutch fluid overheated?
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Jruby38
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« Reply #4 on: December 09, 2018, 11:54:42 AM » |
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I didn't know the clutch fluid can overheat. How? And how do you prevent it.
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The emperor has no clothes
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« Reply #5 on: December 09, 2018, 01:17:19 PM » |
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I didn't know the clutch fluid can overheat. How? And how do you prevent it.
I can't imagine any situation where it could happen. With brakes yes, they can build a lot of heat in the pads which could get transferred to the fluid. With the clutch the only heat would be coming off the engine. |
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WintrSol
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« Reply #6 on: December 09, 2018, 01:19:52 PM » |
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I didn't know the clutch fluid can overheat. How? And how do you prevent it.
Clutch/brake fluid has an upper temperature limit, based on the DOT number; it represents the boiling point. That number drops as it soaks up water from the air, which is why it should be replaced every year or two. Because of where it is, the fluid in the clutch slave gets pretty hot and, if it is old and water-logged, can fail as the engine heats up. Use DOT4, and change it regularly, and that should not happen. |
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98 Honda Valkyrie GL1500CT Tourer
Photo of my FIL Jack, in honor of his WWII service
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RWhitehouse
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« Reply #7 on: December 09, 2018, 01:59:22 PM » |
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Hot fluid or air causes the opposite effect, need more travel to accomplish the same thing. So the clutch wouldn't release until the lever is almost to the bar, and re-engages almost immediately. Normal engine temperature is far below where brake fluid would start having problems,and being the slave is way on the back away from the cylinders, heat is not a concern.
Its possible the master or slave needs rebuilt. Check for leaks at the slave. Open the clutch master cover and look for air bubbles as you work the lever. If you see bubbles as you pull the lever, the master needs to be rebuilt as it's sucking air.
If both check out I'd be inclined to agree with the damper plate going out.
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WintrSol
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« Reply #8 on: December 09, 2018, 07:30:28 PM » |
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From the OP bike would engage but clutch level movement to engage was minimal... , which I took to mean the lever was nearly touching the grip when the clutch engaged. Air or overheated fluid would do this. OTOH, if he actually meant the clutch engaged (bike began moving) just before the lever was fully released, that's a different problem; this can be caused by a blocked vent between the MC and reservoir, causing pressure to build up as the fluid expands in the heat. A lot of misunderstanding between what it means to engage a clutch, on a lot of motorcycle forums. |
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98 Honda Valkyrie GL1500CT Tourer
Photo of my FIL Jack, in honor of his WWII service
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Big Rig
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« Reply #9 on: December 10, 2018, 06:01:51 AM » |
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Pulling clutch lever, minimal movement, typically sweet spot is mid to 3/4 full pull. Now engagement happens at about 1/10th pull. No slippage in clutch, just engagement
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WintrSol
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« Reply #10 on: December 10, 2018, 07:59:34 AM » |
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Pulling clutch lever, minimal movement, typically sweet spot is mid to 3/4 full pull. Now engagement happens at about 1/10th pull. No slippage in clutch, just engagement
So, if it returned to normal after the bike cooled down, then it is likely the blocked pressure relief hole between the reservoir and MC; if it stayed that way, then you have other problems in the clutch itself. |
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98 Honda Valkyrie GL1500CT Tourer
Photo of my FIL Jack, in honor of his WWII service
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