Brake line length?

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14 Mar 2009 10:26 - 14 Mar 2009 10:27 #271872 by KYKZ1100
Brake line length? was created by KYKZ1100
The parts diagram for my 1981 KZ1100A1 shows the front brake lines as 580mm or 22.83 inches. I thought they looked a little long so when I installed SS lines, I made them 22" rather than 23". Now I'm wondering if I made a mistake. The lines seem long enough when the front wheel is off the ground, but are the forks at the bottom of their travel when the wheel is off the ground in a stationary position, or should I go to 23" lines? Here's what they look like now:

1981 KZ1100A1 Shaft
2007 BMW R1200R
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Last edit: 14 Mar 2009 10:27 by KYKZ1100. Reason: Add picture

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14 Mar 2009 15:30 - 14 Mar 2009 15:34 #271896 by Patton
Replied by Patton on topic Brake line length?
If front wheel will turn lock to lock with front wheel off the ground, and still allow some slight brakeline slack at each full lock position, am thinking existing line lengths are okay.

From the fitment shown in the pic, there's probably no difference in line slack from lock to lock, but would check to be sure.

Would concur that the front wheel doesn't drop any lower during riding than its position suspended off the ground.

Good Luck! :)

1973 Z1
KZ900 LTD
Last edit: 14 Mar 2009 15:34 by Patton.

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14 Mar 2009 15:47 #271898 by KYKZ1100
Replied by KYKZ1100 on topic Brake line length?
Patton,

Thanks. There's a splitter mounted to the front of the lower triple clamp that the lines to the front calipers come out of so there's no change in slack as the wheel is turned from side to side.

1981 KZ1100A1 Shaft
2007 BMW R1200R

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14 Mar 2009 16:08 #271904 by MFolks
Replied by MFolks on topic Brake line length?
If it was me I'd make them at least 2-3" longer. If the front suspension extends after going over a bump the lines you have now will be stressed and possibly break at the fittings.

1982 GPZ1100 B2
General Dynamics/Convair 1983-1993
GLCM BGM-109 Tomahawk, AGM-129A Advanced Cruise Missile (ACM)

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14 Mar 2009 16:11 #271906 by donthekawguy
Replied by donthekawguy on topic Brake line length?
They do look a little short but if they don't "max out" when the wheel is up you should be ok. Maybe pull on the wheel when it's up just to make sure.

Rathdrum Idaho
1971 Kawasaki g3ss
1972 Yamaha R5 350
1965 Suzuki Hillbilly
1964 Yamaha 125

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