ass end movement?

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12 Jun 2012 10:23 #528468 by fizzer_$tfighter
ass end movement? was created by fizzer_$tfighter
Ok so when I'm at hwy speed I get a lot of jumping around?
Im guessing input error or suspension

I have a 130 rear tyre. And what seems to be stock rear suspension

82 KZ 1000 J Model

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12 Jun 2012 10:40 #528479 by TexasKZ
Replied by TexasKZ on topic ass end movement?
If you mean there is a lot of vertical movement, then it is likely bad shocks. If they are still the factory units,then there is a 99.9% chance that they are needing replacement.

If the movement is horizontal, it could be bad shocks, improperly adjusted shocks, bad swingarm bearings/bushings, bad steering stem bearings, a bad tire, or improper tire inflation.........

1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough
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12 Jun 2012 10:54 #528482 by fizzer_$tfighter
Replied by fizzer_$tfighter on topic ass end movement?
Yeah I feel like its horizontal movement.

Ill try checking the steering stem and swing arm bushings first.
I think the tie is good on inflation, maybe bad balance?

I thought maybe it was just such a thin tyre,but nobody else has had the problem from that...
Is there a ”easy” swap to put a wider wheel on?

A far as suspension, I bought the bike with the suspension stiff as sin.
The PO was a much larger then myself.
I knocked the back down 2 or 3 from all the way up.

Could there be too much/little air in the forks causing it?

82 KZ 1000 J Model

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12 Jun 2012 11:02 #528483 by Medina
Replied by Medina on topic ass end movement?

fizzer_$tfighter wrote:
Ill try checking the steering stem and swing arm bushings first.
I think the tie is good on inflation, maybe bad balance?

Is there a ”easy” swap to put a wider wheel on?


I knocked the back down 2 or 3 from all the way up.

Could there be too much/little air in the forks causing it?


yes, absolutely check the correct steering stem adjustment.
thinking tire inflation is correct is.......not, check it. go to manufactures website and follow their guidelines. I screwed with the pressure on mine for days. Finally ironed out all the bugs...I think...in my KZ, smooth ride now

do not put on a bigger tire than is mentioned in the manual. period.

yes, certainly, check the fork air, and DO IT the right way, or risk blowing out those seals.

Spend an hour reading here, and you'll find I had the same problems and the journey I took to fix it. Its likely something very very simple, or a combination of things.

1981 KZ1100 Vetter "Luminous Navy Blue" DAMN YOU COLOR CODES!
Medina, Oh
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www.kzrider.com/forum/10-new-members/469298-from-ohio
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12 Jun 2012 11:46 #528494 by trianglelaguna
Replied by trianglelaguna on topic ass end movement?
tire prssure correct

good /better rear shocks

avon tires

and enjoy

1976 KZ900
2003 ZX12R
2007 FZ1000
2004 ninja 250R for wife
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12 Jun 2012 12:02 #528500 by fizzer_$tfighter
Replied by fizzer_$tfighter on topic ass end movement?
I ”think” means the last time I checked (last week) it was correct.
And I didn't say tire, I said wheel.
Im looking to getting a wider rear ”wheel” so I can put a bigger tire on.
This is my cruising bike, I want it to look good, not worried about setting record lap times in the twisties.

As far as ”correct” steering stem adjustment, what are you referring to?
I meant checking that it was greased and tight.

The air in the forks is a real bitch because I haven't found a good hand pump with gauge. I just have my soccer ball pump and a tire pressure gauge.

And what avon tires you use?

82 KZ 1000 J Model

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12 Jun 2012 12:04 #528501 by Street Fighter LTD
Replied by Street Fighter LTD on topic ass end movement?
Assume Nothing,

Check Everything !!!!!


Original owner 78 1000 LTD
Mr Turbo Race Kit, MTC 1075 Turbo pistons by PitStop Performance , Falicon Ultra Lite Super Crank, APE everything. Les Holt @ PDM's Billet Goodies . Frame by Chuck Kurzawa @ Logghe Chassis . Deep sump 5qt oil pan. RIP Bill Hahn
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