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Crazy Wobble in higher speed turns
- Galactica
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77KZ1000
76 KZ900
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- mjg15
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Money well spent.
'80 Z750fx
'81 KZ550A
'81 GPz550's, Too many!
'82 KZ1000R
'82 GPz750
'90 ZR550
Project photo album: s163.photobucket.com/albums/t289/mg15_ph...GPz-ZR550%20project/
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- 650ed
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Hagon
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
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- mjg15
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'80 Z750fx
'81 KZ550A
'81 GPz550's, Too many!
'82 KZ1000R
'82 GPz750
'90 ZR550
Project photo album: s163.photobucket.com/albums/t289/mg15_ph...GPz-ZR550%20project/
s163.photobucket.com/albums/t289/mg15_ph...current=DSC01286.jpg
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- greychur
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mjg15,
I will definitely bump up my tire pressures. What do you guys recommend? The sticker on the bike and the FSM say 28 ft and 32 rr. Max shown on side walls is 42.
Bridgestone recommend 36 front and 38 rear if my conversion is correct.
[ www.bridgestone.co.uk/bfe/tyreSelectorCo...step=4&country=Great Britain&hiddenCountry=Great Britain&hiddenMake=Kawasaki&hiddenModel=Z900&hiddenModelYear=&hiddenSite=Bridgestone United Kingdom&locale=en_GB]
Paul
1978 Z650C2. Marshall 4 into 1. Newtronic ignition. Otherwise stock(ish).
1979 KZ1000ST. Harris 4 into 1. Dyna S.
Hampshire, England
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- 650ed
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1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
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- Galactica
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Those Hagons look really sweet. I realize now that I've been running my tire pressures WAAAAY too low. After pondering all of the input on this thread I really looked at my tires. The rear is worn with a very wide flat section. I think that when I have the bike really heeled over at high speed it slips off of the shoulder of the flat section causing the bike to wobble and chop. Much like bad rear shocks might feel.
Having said that I'll get a new rear tire and bump up my pressures to 36 and 38. If that doesn't help then I'll look at new shocks. Those Hagons are on my list.
Ross
77KZ1000
76 KZ900
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- mjg15
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Here's a pic of the Hagon's on my bike:
Not to hijack .....but that's a sweet 650. Original or restored ?
'80 Z750fx
'81 KZ550A
'81 GPz550's, Too many!
'82 KZ1000R
'82 GPz750
'90 ZR550
Project photo album: s163.photobucket.com/albums/t289/mg15_ph...GPz-ZR550%20project/
s163.photobucket.com/albums/t289/mg15_ph...current=DSC01286.jpg
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- 650ed
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1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
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- Kawickrice
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Ed,
Those Hagons look really sweet. I realize now that I've been running my tire pressures WAAAAY too low. After pondering all of the input on this thread I really looked at my tires. The rear is worn with a very wide flat section. I think that when I have the bike really heeled over at high speed it slips off of the shoulder of the flat section causing the bike to wobble and chop. Much like bad rear shocks might feel.
Having said that I'll get a new rear tire and bump up my pressures to 36 and 38. If that doesn't help then I'll look at new shocks. Those Hagons are on my list.
Ross
When you get some new rubber read the tire itself for the recommended psi. The tire supercedes the manual. All tires are different so this is tire inflation 101.
Here is a set of piggyback shocks I picked up on ebay. They are totally rebuild able and I like the ride
73 Kawasaki Z1
07 HD CVO Ultra Classic
82 Suzuki GS 1100
74 Yamaha RD 350 (My two stroke toy)
77 Kawasaki KZ 650B-1 (My putt around bike)
80 Indian Moped (My American Iron)
1
Long Gone
75 Suzuki GT550
74 GT 380
79 RD 400 Daytona Special
72 Honda CL 175
74 Honda QA 50
Tampa FL
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- 650ed
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When you get some new rubber read the tire itself for the recommended psi. The tire supercedes the manual.
Take another look because this is not true. I have used many tire brands and never saw a recommended PSI. Stamped in the tire you will see the tires rated "Maximum Load" and the pressure that MUST be used at the MAXIMUM load. Very few, if any, bikers are riding around at maximum load as that would be in the 1200 to 1400 pound range when you add the 2 tires' maximum loads together. At normal loads pumping the tires up to maximum pressure will not give the best performance as the tires will be hard as rocks. The best pressure for a given situation depends on the weight of the bike, rider, accessories, and passenger (if any); the tire brand and model; and the riding conditions and style. I start with the pressure specified on the bike (you really don't want to run less than this) and add a one or two PSI at a time to see if performance is better or worse. Generally, I don't need to go more than 2 PSI above the bikes spec before performance starts to drop. Keep in mind, this is for me @ 200 lb., no accessories, and usually no passenger. Ed
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
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- TexasKZ
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Here is what the Bridgestone website has to say about tire pressures--- (emphasis added by me)
TIRE INFLATION
Always keep the motorcycle manufacturer's recommended air pressure in both tires. This is an important requirement for tire safety and mileage. Your motorcycle owner’s manual will tell you the recommended cold inflation pressure. On some motorcycles, the recommended front and rear tire pressures will be different. The pressures stamped on the sidewall of the tire are only for maximum loads. On some occasions, these pressures will also be the manufacturers recommended settings as well.
Riding on tires with too little air pressure is dangerous. The tires will build excessive heat. This can cause a sudden tire failure that could lead to serious personal injury or death.
UNDERINFLATION MAY ALSO:
Damage the tire leading to tire failure
Adversely affect vehicle cornering
Reduce tire life
Increase fuel consumption
Fatigue cracking
Riding on tires with too much air can be dangerous. The tires are more likely to be cut, punctured, or broken by sudden impact. Serious personal injury or death could result. Do not exceed the pressure indicated on the tire sidewall. Consult your owner’s manual for the recommended inflation and other tire none.
Never inflate a tire unless it is secured to the motorcycle or a tire-mounting machine. Inflating an unsecured tire is dangerous. If it bursts, it could be hurled into the air with explosive force resulting in serious personal injury or death.
Kawickrice wrote:
Galactica wrote:
Max is load is 507lb @ 42 psi cold front, 633lb @ 42 psi rear cold.
I,ve been running at 28-30 front and 32-34 rear. The FSM says 28 front and 32 rear.
Why are you not following the manufactures recommended air pressure? Is there a reason you are running 12 to 14 psi lower than the tire manufacture recommends. That is possibly the root to the cupping which is probably the root to the wobble.
The factory shop manual is for OEM tires and the technology has changed since then. Always follow the manufacture recommendation for any tire.
1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough
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