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Buell Forum » 1125R Superbike Board » Archive through October 21, 2017 » Clutch slipping over 7300 RPM « Previous Next »

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Pipeguy
Posted on Monday, June 19, 2017 - 03:18 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I have a new to me 2010 and just started to notice seems clutch starting to slip in 4-6 gears over 7300RPM.

Bike has a slight weep from clutch side (typ at the Puck). and am I am planning to do a
Click to view larger image and other views
X2086-1AM Buell Hydraulic Clutch Piston amp Cylinder Kit.

Is there a better choice or aftermarket alternative?
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Duanelr
Posted on Monday, June 19, 2017 - 03:54 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Yep, Oberon.
If it's more expensive, it's because it is an entire assembly, like a pre-assembled kit. It's very nice.
http://www.oberon-performance.co.uk/acatalog/Buell _Clutch_Slave_Cylinders.html
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Pwillikers
Posted on Monday, June 19, 2017 - 03:55 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Yes. Erik Buell Racing has an improved kit. They may have some left over that they are selling off. I suggest you call and ask.

https://www.erikbuellracing.com/contact
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Joe7bros
Posted on Monday, June 19, 2017 - 07:08 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

But I doubt that is causing the clutch to slip; leaking piston would make it difficult to shift, especially downshift at speed and 1st gear at a stop.
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Froggy
Posted on Monday, June 19, 2017 - 07:46 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

All the kits mentioned above will do the trick, I got the x2086.1am kit on my 08 and the EBR kit on 09. Since you are in Canada, the Oberon kit is likely easier to source than the EBR or Buell kits.

https://bluestreakracing.ca/buell-clutch-slave-cyl inders.html
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Nuts4mc
Posted on Monday, June 19, 2017 - 09:39 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

like Joe7 sez...the leaking slave cylinder won't make it slip...
Barnett makes a kit for the 1125
a) don't use the springs included in the kit...they are very stiff...just replace the "stock" springs
b) soak the plates overnight before you install
c) pay attention to the order of the steel plates...I believe the first one to go in (or last one to come out) is different from the other plates (which are all alike)
HTH
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Pipeguy
Posted on Monday, July 24, 2017 - 04:57 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

OK so I got the barnett clutches and soaked them. Put them in and they slipped like crazy. Took them out cleaned them put them back in and they slipped.

WTF

Its a dry clutch or a wet clutch?

Old ones were toast that i took out.

I am confused at the end of my rope here.

(Message edited by pipeguy on July 24, 2017)
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Stevel
Posted on Tuesday, July 25, 2017 - 03:35 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

The problem is simple. For some reason you do not have sufficient clamping force on the clutch plates. Either the springs are insufficient or there is something inhibiting the travel of the release mechanism. The latter being the most likely cause.
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Nuts4mc
Posted on Wednesday, July 26, 2017 - 10:34 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

a) how tight is the "spherical nut"?...it fastens to the clutch "pull rod"....if you make that "nut" too tight it will constantly pull the end plate and the clutch pack will not clamp tight... even though you have released the clutch lever.
b) if you changed out the hydraulic slave cylinder (Oberon/EBR/HD)...did you align the outer cylinder with the tiny "tab" in the outer casting...if you missed that alignment (it's easy to miss)...the slave cylinder is too far "in" and you have compensated the lack of "stack up/travel" by tightening the spherical nut too tight.
like Stevel sez...something is stopping the full travel of the clutch pull rod and the clutch pack is not clamping with the correct force...
here is a youtube video on the slave cylinder R&R...hope this helps

https://www.youtube.com/watch?v=NCEetGIc9ks
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