Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums - Reply to Topic
Wheels, Suspension and Brakes
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Thread: Shake, in the Bars/Forks Reply to Thread
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  Topic Review (Newest First)
06-16-2013 12:55 AM
wmsonta Thanks Spock, I hate bad news.

Any play would have been apparent before the front shocks compress. I never let the clutch out that far. Just enough to use the motor to take the play out.
06-16-2013 12:45 AM
Spockster Mine just compresses the front forks then the front starts wheel hopping and sliding the front tire. I lunged it several times to the back of the stall and didn't see anything other than that.

It's not shaking like it was before I changed the tire. There may be a very slight shimmy once in a while, but it also seems to coincide with bad roads.
06-15-2013 11:35 PM
Originally Posted by Spockster View Post
watching for movement in the neck bearings?
This is almost impossible to do. The weight of the cycle is multiplied by the front rake.

a good friend bought a mid '80's GW, it developed an intermittent shake so severe you had to stop at all costs. I explained what it had to be, he said he had no distinguishable steering head play. He was afraid to ride it. Weeks later, I visited. The bike would move 3+ inches w/the front tire stationary.
06-15-2013 11:11 PM
Spockster wm, are you talking about watching for movement in the neck bearings? Because that's what I'll try when I pull it in the garage in a minute.

The new oversized front tire is working great, didn't get to look at the speedo vs. GPS.

06-15-2013 03:23 PM
wmsonta Spock, I would like you to do the following. At standstill, put the bike in first, clamp down on the front brake. Ease the clutch out a number of times while watching the front tire contact. Have your but off the seat, if the body of the bike moves AT ALL I would not ride it at speed.

Anything else you will have some control over.
06-15-2013 04:57 AM
Spockster Yep, when I bought it, the tubes were uneven and both were too high in the clamps. Still not perfect, might need more hands. It's a whole lot better, but with no hands, I'm still leaning over the right side to keep it going straight. At least the left hand isn't cramping now from constant counter-steering, like it was.
06-15-2013 03:15 AM
Originally Posted by FoolAmI View Post
I didn't know you could align the front tire. Maybe youíre leaning a tiny bit to one side. With my scoliosis I know my upper body leans a bit to one side which can make my slightly offside weight make the bike ease to the right if Iím just sitting relaxed.
Yeah, the tubes can allow the front wheel to twist one direction or another if they are loose. Also, if the tubes are not level in the triple, it could cause mis-alignment.
06-15-2013 02:36 AM
Spencer1 I didn't know you could align the front tire. Maybe you’re leaning a tiny bit to one side. With my scoliosis I know my upper body leans a bit to one side which can make my slightly offside weight make the bike ease to the right if I’m just sitting relaxed.
06-15-2013 12:15 AM
Spockster Mounted the tire and rode 60 miles. The shake is gone with the old tire, it looked a tiny bit deformed after I got it off. It does have some very slight play in the neck if you pull the forks forward, the wheel was arrow straight.

Just need to get the alignment right, still biased left a bit.

Nice ride today, ran great, great gas mileage and power, handles pretty good even with bad alignment.

06-14-2013 12:17 PM
Spockster Ok, thanks guys, headed out to change the tire and I'll check all these items. I do have the Ride-On to put in the tire, it's working fine for the rear, didn't even notice anything on the first couple of miles.

Bent rim is a possibility since it hit some way with the front, didn't look for that or the runout.
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