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Clutch Spring question

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Old Dec 1, 2010 | 01:29 PM
  #11  
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What does VPC stand for?
 
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Old Dec 1, 2010 | 01:45 PM
  #12  
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Originally Posted by bbflhrs
What does VPC stand for?
variable pressure clutch; they will slip on a high rpm launch as they need rpms to grab.

http://www.aim-tamachi.com/home.php?cat=3
 
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Old Dec 1, 2010 | 02:02 PM
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Originally Posted by cyclonecutting
Thanks for the info. I am chasing a slipping clutch and thought about changing the spring to see if that would help.

I find it hard to believe the plates are worn out already, the bike only has 36K and most of that is highway miles. I have adjusted the clutch a couple of times now and it is not making much of a change. After some closer examination last night, I am now leaning towards the possibility that the clutch cable may be dragging. I am only noticing the slippage under full throttle between shifts in the upper gears. If I wait a few seconds after the shift and apply the throttle, it does not seem to slip.

I rode around 2-up this weekend and did not notice any slippage as well, of course when I am 2-up I ride a lot more conservative.

Anybody have any thoughts?
You are not using oil with friction modifiers in it are you?
 
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Old Dec 1, 2010 | 02:06 PM
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Originally Posted by easycruzer
You are not using oil with friction modifiers in it are you?
Good question; one I forgot to ask. What lubricant are you running in the primary?
 
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Old Dec 1, 2010 | 02:10 PM
  #15  
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Originally Posted by easycruzer
You are not using oil with friction modifiers in it are you?
Nope, just plain 20W-50 (at least the bottle was not marked as having friction modifiers).
 
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