squirrley rear end

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03 May 2013 10:17 #585417 by flying dutchman
squirrley rear end was created by flying dutchman
hey guys. 79 kz-1000-ltd. rear end feels squirrley under hard braking in a straight line. anybody have any ideas on what causes this?

flyingdutchman
79 kz-1000 ltd left to me by my best friend!!
it came in four boxes, frame and engine
i look much better with my helmet on, its full face.

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03 May 2013 12:24 #585433 by kzz1king
Replied by kzz1king on topic squirrley rear end
Not sure if you are referring to bike in pics but mine did that with loose and broke spokes! Could be wheel bearing too. Wheel cocked in arm.
Wayne
74 Z1 1075, 29 smoothbores, owned and ridden since 1976
Home built KZ1000 turbo setup

www.kzrider.com/forum/11-projects/532476...s-budget-turbo-build

www.kzrider.com/forum/11-projects/532489-74-z-makeover
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03 May 2013 13:16 - 03 May 2013 13:17 #585438 by 650ed
Replied by 650ed on topic squirrley rear end
What tires; tire sizes; and air pressures are you using and how old are they? (Not Dunlops I hope) Ed
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
Last edit: 03 May 2013 13:17 by 650ed.

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03 May 2013 13:31 #585440 by MTH76
Replied by MTH76 on topic squirrley rear end
If you have a center stand, put your bike on it and check your swing arm for any side to side movement.
Also check the wheel while it is raised off of the ground.
This is not a good feeling to have.
Good Luck!
1976 KZ900 1075 head ported,over-sized intake valves shim under bucket Z-4 cam motion cams 34mm RS carbs back cut trans GS1000 swing arm with 3.5" Sun rim MotoGPwerks stainless steel pipe
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03 May 2013 19:13 #585492 by flying dutchman
Replied by flying dutchman on topic squirrley rear end
avon-cobras, 130/90-16. everything on back seems tight, measured and tire runs true. scratching my head.


flying dutchman
79 kz-1000 ltd left to me by my best friend!!
it came in four boxes, frame and engine
i look much better with my helmet on, its full face.

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03 May 2013 19:35 #585497 by MFolks
Replied by MFolks on topic squirrley rear end
Axle tight? Chain adjusters with same tension? Torque link tight? Bearings in good shape?
1982 GPZ1100 B2
General Dynamics/Convair 1983-1993
GLCM BGM-109 Tomahawk, AGM-129A Advanced Cruise Missile (ACM)
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03 May 2013 19:38 #585498 by 650ed
Replied by 650ed on topic squirrley rear end
Are you applying enough front brake on hard stops? Some guys (not saying this is you) are reluctant to really lay on the front brake during hard stops even on good, dry asphalt. If the rear brake is used as the primary stopper it will break free rather easily as the bike's weight shifts to the front forks. I believe the braking ratio is something like 80% front 20% rear for quickest stops. Ed
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
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15 May 2013 22:23 #587619 by havakaw
Replied by havakaw on topic squirrley rear end
Quit driving so damn fast!!! :woohoo: Check the tire pressure,make sure it's up to spec.
'80 KZ 750 LTD-H
'82 KZ 1100 A-2 Shafty (ex-bagger)

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