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post #1 of 21 (permalink) Old 06-05-2017, 09:37 AM Thread Starter
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wobble question

My bike is developing a wobble, especially noticeable on sweeping corners, the more aggressive, the more aggressive it'll wobble. If I lean the bike at all, and hit a bump, it'll wobble too, just something I've noticed recently. Sometimes I'll notice a faint wobble going down a straight road, but this is rare and could be the road. I've got over 60k on the bike and this has begun over the past 1-2k miles. I'm wondering about the rear swingarm bushings and curious what the signs of wear are? When I took off the caps for the swingarm, the right side had debris, looked more like shavings, and the left had more of what looked like normal grime.

Being I have 60k on the bike, I plan on replacing the bearings on the next tire change.

TIA!

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post #2 of 21 (permalink) Old 06-05-2017, 09:56 AM
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It could be lots of things. The first thing I would look at is the tires. How worn, are they properly balanced and inflated? Then the wheel bearings, check for wear. My experience is 60k about does it for front wheel bearings, I would change them anyway if they have never been done. CBR Bearings is the place to get them as they sell only US or Japanese bearings, no Chinese. Rear wheel bearings last way longer, usually.
Then check your steering head bearings. They are probably OK but jack up the front end and check for any play or roughness.
Shavings under the cap on the R. swingarm bearings? Yep, it needs replacing. I would go ahead and do both sides and would not ride the bike until everything has been fixed.
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post #3 of 21 (permalink) Old 06-05-2017, 10:32 AM
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Check the tires first. Make sure the tire PSI is correct first and then check for tire wear or cupping. In most cases the front tire is the cause of wobble so ride down the road and run up to 55 mph then take your hands off the handlebars and see what happens as you slow down. If the handlebars start to wobble around 40 or 45 mph then it's a good chance the front tire is worn out. Also jack the bike up and spin the wheels forward and backward if you hear a clicking sound when spinning the wheel backwards then the bearings are going bad. While the bike is jacked up disconnect the clutch cable at the clutch lever and bezel and do the swing test, if the front end passes the swing test according to the manual specs then you're good, if not then you need to tighten up the steering head bearing. It's a good idea to grease the steering head bearing before doing the swing test.
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post #4 of 21 (permalink) Old 06-05-2017, 01:14 PM Thread Starter
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Quote:
Originally Posted by jcarruth View Post
It could be lots of things. The first thing I would look at is the tires. How worn, are they properly balanced and inflated? Then the wheel bearings, check for wear. My experience is 60k about does it for front wheel bearings, I would change them anyway if they have never been done. CBR Bearings is the place to get them as they sell only US or Japanese bearings, no Chinese. Rear wheel bearings last way longer, usually.
Then check your steering head bearings. They are probably OK but jack up the front end and check for any play or roughness.
Shavings under the cap on the R. swingarm bearings? Yep, it needs replacing. I would go ahead and do both sides and would not ride the bike until everything has been fixed.
Tires are about 70% worn, and I have new tires ready to put on. Been running Avon's front and rear with 42/48 for pressure. Using this as a guide. Avon Motorcycle Tyres North America Tire Pressure Guidelines

I plan on checking my head bearing as well, but this does not feel like a head bearing wobble. I can ride no hands most often, but not all the time. Depends on weight, speed and road. Slower speeds tend to wobble more than higher speed.

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post #5 of 21 (permalink) Old 06-05-2017, 02:22 PM
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Tires-wheel bearings- motor mounts.

If you have the new tires, then mount them and check the wheel bearings at the same time. Badly cleated tires can give the rider a bit of an unstable feel in a sweeping turn. As the cleat edges grab and slip.

After that you would want to look at the motor mounts. There is threads here that shows what to look for. https://www.roadglide.org/26-engine-r...alignment.html


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post #6 of 21 (permalink) Old 06-05-2017, 04:21 PM Thread Starter
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Tires-wheel bearings- motor mounts.

If you have the new tires, then mount them and check the wheel bearings at the same time. Badly cleated tires can give the ridder a bit of an unstable feel in a sweeping turn. As the cleat edges grab and slip.

After that you would want to look at the motor mounts. There is threads here that shows what to look for. https://www.roadglide.org/26-engine-r...alignment.html
Thanks for the info!!!

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post #7 of 21 (permalink) Old 06-05-2017, 07:34 PM Thread Starter
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Here's a pic of the right swingarm bushing I mentioned earlier.
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post #8 of 21 (permalink) Old 06-05-2017, 07:41 PM
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Originally Posted by ksarauer View Post
Here's a pic of the right swingarm bushing I mentioned earlier.
That's a motor mount. And it's prolly worn out, but hard to say with just that look. See what the right front one looks like.


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post #9 of 21 (permalink) Old 06-05-2017, 07:50 PM Thread Starter
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The front right. It's clean/ shiny where the wear spot is on the mount
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post #10 of 21 (permalink) Old 06-05-2017, 08:22 PM
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That one is not centered, so it's time to think about some new ones.

Can't say if it's the cause of your issue, vibration seems to be the most common complaint. But if the rear ones are letting the power-train shift left and right, it would cause a wobble under side loading.


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