2012 103 clutch slippage

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Jul 20, 2019 | 12:46 PM

#31

jt metal

Thread Starter

Road Warrior

Joined: Jun 2014

Posts: 1,297

Likes: 57

From: N. IL

Quote:

Originally Posted by hattitude

I've never done it through the derby cover, I always took off the outer primary... but...

In the install pics for Fuelmoto's AIM / Custom Variable Pressure Clutch, it looks like it could be done... You could always try it and if it doesn't work then just drain the primary fluid and pull the cover.....

Looks very doable. I don't mind giving the s.e. spring a shot. I just didn't want to waste a $40 primary gasket, just to do it all over again in a other week.
I'll scope it out & get back to you guys!

Jul 20, 2019 | 07:07 PM

#32

ORradtech

Outstanding HDF Member

Joined: May 2015

Posts: 2,172

Likes: 377

From: Georgia

Quote:

Originally Posted by jt metal

If that primary gasket is new it should be reusable. I have successfully reused them before.

Jul 21, 2019 | 12:34 AM

#33

IKnowNot

Road Master

Joined: May 2012

Posts: 773

Likes: 124

From: Between purgatory and retirement

Quote:

Originally Posted by jt metal

... With the first gear being the lowest gear. It is multiplying the torque output from the motor at a much higher rate for n the following gears...

The HP and Torque from the motor to the clutch should be constant at any given RPM or gear; the trans, which is on the other side of the clutch, is what is multiplying the torque to the wheel. The forces which are working against the trans side of the clutch can vary with speed. However, there is a slight difference in the efficiency of the straight cut first gear vs. the helical gears, but should not be felt.

You said you have a PV, so if you really want to know, run a log which includes the RPM, Throttle position, and vehicle speed through a hard pull of all the gears. You should be able to spot any clutch slippage and I bet you”ll find if it is happening in first gear, it is happening in others.

Just basing this on this thread, but it seems that the OP is seeking Validation for prior choices and current conclusions rather then an actual solution.

Poor choices in the past and a very aggressive riding style have lead to the OP’s problems, and now he/she is looking for a cheep way out. (Indicated by not wanting to replace that primary gasket and just go in through the derby cover … wait, the OP has never used that term, … wasn’t the inspection cover … never mind, but I wish my bike had an inspection cover so I didn’t have to replace the primary gasket when I wanted to check and adjust the manual chain adjuster I put on.)

My personal take on a solution? (take it for what it is worth)

Pull the primary cover off, check the chain and tensioner, check the primary bearing, replace the clutch plates and install the SE spring the OP already has (which you may not like the pull on), and for the way the you ride the bike, add a variable pressure clutch (the AIM or similar) to avoid problems like this and wining about clutch pull in the future.

… Until the crank twists???

IMHO.
.