Fork Shuddering? - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 11 (permalink) Old 05-11-2009, 02:31 AM Thread Starter
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Fork Shuddering?

Going down the highway on my recently purchased '94 Vulc I went to pass someone and was doing about 75-80 MPH and I started feeling this slow vibration coming up through the handlebars that got more intense as speed increased. I looked down at the front wheel and saw the whole assembly shuddering back and forth rapidly. once I slowed to about 65-70 the shuddering was much less pronounced.

I'm not sure if the Vulc is trying to tell me that I shouldn't be going that fast or if I have a serious problem that I need to have looked at.

Has anyone else experienced this?

I would like to emphasize that I'm not a reckless rider, I was only going that fast to get past a car that was driving erratically and I felt was a threat.
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post #2 of 11 (permalink) Old 05-11-2009, 02:42 AM
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Quote:
Originally Posted by VulcRider24 View Post
Going down the highway on my recently purchased '94 Vulc I went to pass someone and was doing about 75-80 MPH and I started feeling this slow vibration coming up through the handlebars that got more intense as speed increased. I looked down at the front wheel and saw the whole assembly shuddering back and forth rapidly. once I slowed to about 65-70 the shuddering was much less pronounced.

I'm not sure if the Vulc is trying to tell me that I shouldn't be going that fast or if I have a serious problem that I need to have looked at.

Has anyone else experienced this?

I would like to emphasize that I'm not a reckless rider, I was only going that fast to get past a car that was driving erratically and I felt was a threat.
Was the wheel shuddering back and forth or the fork assembly?


85 VN700 "Old Yella"

REBUILT ENGINE
CUSTOM PAINT
VANCE & HINES CRUZERS
EAR SHAVED AND RE-JETTED W/K&N'S
DUNLOP ELITE K591 FRONT & REAR
VOLTMETER
SYNTHETIC BRAKE FLUID
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post #3 of 11 (permalink) Old 05-11-2009, 02:44 AM Thread Starter
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The fork assembly was. It wasn't shuddering where the forks are connected to the frame, just down where the wheel and brake assembly are.
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post #4 of 11 (permalink) Old 05-11-2009, 02:48 AM
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You may have an out of round tire, or it may just need to be balanced.


85 VN700 "Old Yella"

REBUILT ENGINE
CUSTOM PAINT
VANCE & HINES CRUZERS
EAR SHAVED AND RE-JETTED W/K&N'S
DUNLOP ELITE K591 FRONT & REAR
VOLTMETER
SYNTHETIC BRAKE FLUID
SYNTHETIC OIL & GEAR LUBE
PLEXISTAR 2 WINDSHIELD
SPLINES LUBED
ACCT'S GREASED W/TOC SPRINGS
COASTERD
LEATHER SADDLE BAGS
LEATHER TOOL AND ROLL BAG
PICKUP COILS GAPPED AT .018"
NGK CAP, WIRES, IRIDUMS
BARNETT FRICTION PLATES & SPRINGS
CUSTOM GRIPS, MIRRORS, LEVERS
ORIGINAL STATOR & R/R 14.5v
DEKA MF AGM ETX15L

Best Auto/Moto Insurance | Motorcycle Protection Today | FREE Trade-In Quote
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post #5 of 11 (permalink) Old 05-11-2009, 02:59 AM Thread Starter
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Thats what I was thinking, is it as dangerous as it feels?
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post #6 of 11 (permalink) Old 05-11-2009, 03:03 AM
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It may not be dangerious but I would get it fixed ASAP.


85 VN700 "Old Yella"

REBUILT ENGINE
CUSTOM PAINT
VANCE & HINES CRUZERS
EAR SHAVED AND RE-JETTED W/K&N'S
DUNLOP ELITE K591 FRONT & REAR
VOLTMETER
SYNTHETIC BRAKE FLUID
SYNTHETIC OIL & GEAR LUBE
PLEXISTAR 2 WINDSHIELD
SPLINES LUBED
ACCT'S GREASED W/TOC SPRINGS
COASTERD
LEATHER SADDLE BAGS
LEATHER TOOL AND ROLL BAG
PICKUP COILS GAPPED AT .018"
NGK CAP, WIRES, IRIDUMS
BARNETT FRICTION PLATES & SPRINGS
CUSTOM GRIPS, MIRRORS, LEVERS
ORIGINAL STATOR & R/R 14.5v
DEKA MF AGM ETX15L

Best Auto/Moto Insurance | Motorcycle Protection Today | FREE Trade-In Quote
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post #7 of 11 (permalink) Old 05-11-2009, 10:57 AM
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Check and tighten every nut and bolt on your front end. My bro put his vintage gold wing in the ditch totaling it because the triple clamp bolts were loose. After that incident, I check and tighten every season.

DT

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post #8 of 11 (permalink) Old 05-11-2009, 01:00 PM Thread Starter
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Took her to a Kawasaki dealer and they told me both my tires were low! 12 in the front and 10 in the rear! I got a scolding from the mechanic and really learned my lesson. The tires "looked" fine so I didn't bother checking the pressure. I'm definitely checking that more often. I took it on the highway and the shuddering was much less noticeable but I looked down and could still see the forks shuddering a little bit but that was at a much higher speed.

Thanks for the help guys
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post #9 of 11 (permalink) Old 05-11-2009, 02:16 PM
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Check the balance on the front tire.

02 honda sabre 1100
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post #10 of 11 (permalink) Old 05-11-2009, 08:41 PM
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Buy an air gauge, and check the tire pressure often. (Look them over often as well for damage.) I have several/many gauges, if you can't swing one, let me know and we'll call it and early x-mas gift...
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