Clutch adjustment at the lever

  • daveo
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28 Jun 2020 17:30 - 28 Jun 2020 20:25 #829256 by daveo
Clutch adjustment at the lever was created by daveo
Only took me twenty years to try this.

Been riding a few hundred miles with all free play adjusted out of the clutch cable.
Previously, I maintained 3mm +/- free play per FSM, and the lever would constantly vibrate, wiggle and shake while riding.

Now just that tiny amount of lever movement disengages the clutch for smooth-precise shifts, with no slippage under hard acceleration.

It is such a joy to ride...


:woohoo:

1982 KZ1100-A2

Last edit: 28 Jun 2020 20:25 by daveo.

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29 Jun 2020 06:19 - 29 Jun 2020 06:19 #829280 by martin_csr
Replied by martin_csr on topic Clutch adjustment at the lever
Doesn't the free play relieve stress on the inner cable to reduce the chances of the cable end breaking off?
Last edit: 29 Jun 2020 06:19 by martin_csr.
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29 Jun 2020 09:02 - 29 Jun 2020 09:05 #829294 by daveo
Replied by daveo on topic Clutch adjustment at the lever
No eBay APP ID and/or Cert ID defined in Kunena configurationNo eBay APP ID and/or Cert ID defined in Kunena configuration

martin_csr wrote: Doesn't the free play relieve stress on the inner cable to reduce the chances of the cable end breaking off?



The tension is relatively light with the lever resting against the perch stop. The lever seems to activate the clutch more smoothly adjusted this way, though the reach is further from the grip.

Am considering elbow shaped levers to shorten the reach:




1982 KZ1100-A2

Last edit: 29 Jun 2020 09:05 by daveo.
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29 Jun 2020 09:09 #829296 by Mikaw
Replied by Mikaw on topic Clutch adjustment at the lever
No eBay APP ID and/or Cert ID defined in Kunena configurationHere’s a set...


1976 KZ 900 A4 kzrider.com/forum/11-projects/613548-1976-kz-900-a4
1976 KZ 900 B1 LTD
1978 KZ 1000 B2 LTD
1980 KZ 750 E1
Kowledge Speaks, But Wisdom Listens.
Jimi Hendrix.
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29 Jun 2020 09:22 #829298 by daveo
Replied by daveo on topic Clutch adjustment at the lever

Mikaw wrote: Here’s a set...



The brake lever end has to be identical where it fits the master cylinder housing...

:)

1982 KZ1100-A2

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29 Jun 2020 09:23 - 29 Jun 2020 09:24 #829299 by zed1015
Replied by zed1015 on topic Clutch adjustment at the lever

martin_csr wrote: Doesn't the free play relieve stress on the inner cable to reduce the chances of the cable end breaking off?

The cold free play of a cable clutch is mainly to allow for heat expansion of the clutch push rod etc
If set too tight the expanding rod and other components can result in zero or negative clearance causing clutch slip.

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Last edit: 29 Jun 2020 09:24 by zed1015.
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29 Jun 2020 09:33 #829302 by daveo
Replied by daveo on topic Clutch adjustment at the lever

zed1015 wrote:

martin_csr wrote: Doesn't the free play relieve stress on the inner cable to reduce the chances of the cable end breaking off?

The cold free play is to allow for heat expansion of the clutch push rod etc
If set too tight the expanding rod and other components can result in zero or negative clearance causing clutch slip.


The noted engagement can be felt after the lever is pulled back about a quarter inch while underway. The actual clutch engagement portion of lever movement is a fraction beyond that.

:cheer:

1982 KZ1100-A2

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29 Jun 2020 09:57 #829306 by martin_csr
Replied by martin_csr on topic Clutch adjustment at the lever
By zed1015: The cold free play of a cable clutch is mainly to allow for heat expansion of the clutch push rod etc
If set too tight the expanding rod and other components can result in zero or negative clearance causing clutch slip.


Thanks. I was thinking the vibrations caused by riding would stress the end of the cable.

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29 Jun 2020 11:45 #829332 by Rick H.
Replied by Rick H. on topic Clutch adjustment at the lever
If the OP has the lever set to where there is just no free play when cold, as the bike heats up the free play will increase. Depending on the make and material the inner and outer cable are made of, this increase could be substantial or not too bad. On my KZ-1000 with new OEM cables the heat expansion is very noticeable and moves the friction point much closer to the grip. When the bike cools off the friction point moves outward.

Rick H.

Rick H.

1977 Kawasaki KZ-1000A1
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