vibration issues !!!!!! - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 21 (permalink) Old 03-14-2007, 09:02 PM Thread Starter
 
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vibration issues !!!!!!

OK, here we go, my bike is running well, went 3 hours today, 2.5 yesterday. i have noticed some vibration, in handgrips, in my mustang seat, and feet, nothinmg drastic, but i really think it would bother me on a long ride, say 200+ miles. i have read about handlebar weights? better grips?re-balance tires? new tires? by the way my bike is a "96, 6700 miles, dunlop qualifier tires in good shape, stock grips, and as stated, a mustang seat, standard foot pegs, I have to do something, my hands do not like the vibes !! i have and am still learning a lot on this site, thanks in advance to all, please any and all comments, suggestions are welcome, if you reccomend tires , please name brand and size, same with grips. my girl friends "93 vulcan is identical, except for spitfire tires, front and rear, her bike has 8300 miles and less vibes than mine?
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post #2 of 21 (permalink) Old 03-14-2007, 09:12 PM
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I would assume you are not the original owner?? If not, it may be that the bike sat in unfavorable conditions and the rubber gromets in the engine balancer have hardened up and are allowing the balancer to shift position as the gear rotates. Is the bike making any clacking or banging noises in time to engine RPM? This is also an indicator as are metal shavings in the oil.
Do the vibrations go in time to the engine RPM?
Dianna posted a pic in the maintenance section of the gallery on what a broken balancer can do. Fortunately, it is repairable, even the damage shown in the picture was fixed with a combination of JB Weld and Redneck engineering. Beavis was the person this actually happened to and his website has the series of pictures on how he fixed it. I dont' have the link handy but someone here will.
Hope this helps and don't get discouraged.

Jim W
93 VN 750 "Ursula"
Moved R/R 08Sep06
R/R rewire 17Feb07
New R/R, Installed 14Jun08
New Stator installed 10 Jun08
Maintenance Free Battery 12Jan08
21480 Miles
VROC #8542
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post #3 of 21 (permalink) Old 03-14-2007, 09:24 PM Thread Starter
 
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I am not the original owner, The rubber mounts may well indeed be "hard". the bike makes no unusual noises at all, the vibes are not in any rythm at all. the vibes are slight but constant, maybe a little more pronounced at higher rpms and higher speeds
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post #4 of 21 (permalink) Old 03-14-2007, 09:27 PM
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Check to see how tight the motor mount bolts and the like are. It could just be that they are loose and are transmitting the vibes through the frame. That's much less drastic than the balancer gear.

Jim W
93 VN 750 "Ursula"
Moved R/R 08Sep06
R/R rewire 17Feb07
New R/R, Installed 14Jun08
New Stator installed 10 Jun08
Maintenance Free Battery 12Jan08
21480 Miles
VROC #8542
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post #5 of 21 (permalink) Old 03-14-2007, 09:32 PM Thread Starter
 
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OK, thanks, I'll check them out
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post #6 of 21 (permalink) Old 03-14-2007, 10:14 PM
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You could add Ride on to the tires, It will also protect against flats and balance the tires.

Chad Falstad "Hawk"
Vroc #17649
2011 HD Ultra Classic "angel"
2001 Nomad 1500 Sold March 2012
2001 VN 750 "Sold June with 2008 with 21,000""Serinity"
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post #7 of 21 (permalink) Old 03-14-2007, 10:19 PM
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One reasonably inexpensive fix would be The Kury Iso grips. They do a lot to tone down the handlebar vibrations.
http://www.customdynamics.com/motorc...ETRIC_CRUISERS

You want the ones for 7/8" (6180) bars and the Goldwing ones are a bit longer to give you more hand room

Dianna
Conway, AR
Patriot Guard Rider
2000 VN750 Sere (Serendipity)
1990 GL1500 (Ole Blue)
1986 VN750 EVie (project bike, heavy custom)
VROC # 11628 / 25000-H
ARVROC # 12 Coordinator and Crowd Control
OKVROC # 18 (H)
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post #8 of 21 (permalink) Old 03-15-2007, 06:02 AM Thread Starter
 
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is it possible to use the new grips and the bar weights?
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post #9 of 21 (permalink) Old 03-15-2007, 02:20 PM
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I feel like I'm more sensitive to vibration than my buds, especially with dirt bikes. I tried the liquid bar snake on my VN and didn't think it helped much. I also have the kury grips but my thumb still goes numb sometimes. Learning to relax my grip has helped a lot. Not saying that this is all you need - since you've been able to compare 2 bikes and find that yours vibrates noticeably more than the other.

The idea about checking the engine mounts is good. I also wanted to suggest that you check your plugs. Getting your bike jetted as close to perfect as possible will minimize the vibration. Perhaps you're running a bit lean due to the colder weather?

Good luck, Mark
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post #10 of 21 (permalink) Old 03-15-2007, 03:33 PM
 
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Try this?

I have custom pipes, actually high quality chrome pickup truck tailpipes on mine. The vibration is more than factory but the owner before me put on some nice pretty thick foamy grips. I love them ! In combination of the grips and my Joe Rocket gel palm gloves I really don't have any issue with vibrations.

My .02
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