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Author Topic: Pulsing clutch lever w/hydraulic clutch?  (Read 1910 times)

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TORKER07

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Pulsing clutch lever w/hydraulic clutch?
« on: February 23, 2008, 12:57:37 AM »

Does anyone have a pulsing sensation in the clutch lever when throttling up? It is more noticable on my scoot at low rpm's under load. My 2000 ultra with cable clutch didn't do this.
I was just wondering what could cause this. Any Ideas?


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grc

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Re: Pulsing clutch lever w/hydraulic clutch?
« Reply #1 on: February 23, 2008, 09:19:08 AM »

Does anyone have a pulsing sensation in the clutch lever when throttling up? It is more noticable on my scoot at low rpm's under load. My 2000 ultra with cable clutch didn't do this.
I was just wondering what could cause this. Any Ideas?


FLHTCUSE2
RHTD's
SERT
SE/AC
2nd set of head gaskets and first rear cyl replacement.
11,200 milz.

Possibly this is what Bert Baker of Baker Drivetrain refers to as "clutch lever walking" with a CruiseDrive trans. 
http://www.bakerdrivetrain.com/f6f/index.htm

Jerry
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Jerry - 2005 Cherry SEEG  -  Member # 1155

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lucky1

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Re: Pulsing clutch lever w/hydraulic clutch?
« Reply #2 on: February 23, 2008, 10:07:44 AM »

As the plates wear, hydraulic fluid is pushed back into the clutch master cylinder reservoir. At some point excess fluid has to be removed or it will dead head the circut. Same as taking all the slack out of a cable clutch.
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TORKER07

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Re: Pulsing clutch lever w/hydraulic clutch?
« Reply #3 on: February 24, 2008, 09:29:46 AM »

So would bleeding the system down be the simplest way to remove the excess?

I have also been thinking about changing the fluids over to silicone based to eliminate brake fluid and paint issues. Would this be a good idea and time for this?

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hdbrad03

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Re: Pulsing clutch lever w/hydraulic clutch?
« Reply #4 on: February 24, 2008, 09:48:48 AM »

If you have DOT 5 it is already Silicone based.
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grc

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Re: Pulsing clutch lever w/hydraulic clutch?
« Reply #5 on: February 24, 2008, 10:53:47 AM »

H-D changed from DOT 5 (silicone) to DOT 4 on the 2005 and later touring models, so you don't currently have silicone fluid in either your brakes or your clutch.  The advantages of silicone include a higher boiling point (not an issue with the clutch), it does not attract moisture, and of course the safety factor with your paint.  The disadvantages include difficulty in bleeding all the air out of the system and the higher cost.  IMHO, the DOT 4 fluid is the best compromise.

Jerry
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TORKER07

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Re: Pulsing clutch lever w/hydraulic clutch?
« Reply #6 on: February 24, 2008, 02:33:57 PM »

H-D changed from DOT 5 (silicone) to DOT 4 on the 2005 and later touring models, so you don't currently have silicone fluid in either your brakes or your clutch.  The advantages of silicone include a higher boiling point (not an issue with the clutch), it does not attract moisture, and of course the safety factor with your paint.  The disadvantages include difficulty in bleeding all the air out of the system and the higher cost.  IMHO, the DOT 4 fluid is the best compromise.

Jerry

Thanks Jerry, I think I'll just leave it alone, like the old saying goes "if it aint broke don't fix it".
I'm sure I'll have lots to work on later :huepfenjump3:

Tork
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SPIDERMAN

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Re: Pulsing clutch lever w/hydraulic clutch?
« Reply #7 on: February 24, 2008, 04:48:57 PM »

H-D changed from DOT 5 (silicone) to DOT 4 on the 2005 and later touring models, so you don't currently have silicone fluid in either your brakes or your clutch.  The advantages of silicone include a higher boiling point (not an issue with the clutch), it does not attract moisture, and of course the safety factor with your paint.  The disadvantages include difficulty in bleeding all the air out of the system and the higher cost.  IMHO, the DOT 4 fluid is the best compromise.

Jerry

Me and Beags can agree with Jerry here from experience. DOT 4 bleeds waaaaaaaaaaay easier than DOT 5.

B B
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