Wobble

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Wobble

Post  justin.ryan.ludwig on Mon Jun 29, 2009 1:29 am

Ok not that I would ever go above the posted speed limit but if theoretically I were to do such a thing I might get a front end wobble at about 90-95 MPH running on a 205-60-16 General Altimax HP and Metzler Me 880 150-80-17. Any suggestions on what to check. Also I am running 3oz of Dynabeads in the rear and 2 up front. Thanks in advance for the help.
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Re: Wobble

Post  twin1300 on Mon Jun 29, 2009 3:20 am

Rear worn shock bushings? (check to make sure the bolt is in the center of the shock eyelet) If you have a windshield on it, remove it and go see if the wobble is still there? That's two of quite a few things it could be. Don't worry, guys with motorcycle tires on there bikes have the same issue...all of a sudden the wobble shows up!


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Re: Wobble

Post  horseman8m on Mon Jun 29, 2009 3:59 pm

twin1300 wrote:Rear worn shock bushings? (check to make sure the bolt is in the center of the shock eyelet) If you have a windshield on it, remove it and go see if the wobble is still there? That's two of quite a few things it could be. Don't worry, guys with motorcycle tires on there bikes have the same issue...all of a sudden the wobble shows up!


..........................bobby

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+1 those two are top on the list. here is one that I just heard about as, I was reading a post on another board about a front end wobble (without a car tire involved) and he found out that his front wheel bearings were worn . He had a new front tire replaced every 8K to 10k miles . It was A 2005 1800 and he had used a torque wrench every time to tighten the axle .
so you never know when a bearing is going to ware out.
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Re: Wobble

Post  twin1300 on Mon Jun 29, 2009 4:26 pm

Worn front axle bearing will do this also, even with a motorcycle tires!


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Re: Wobble

Post  cerooth on Mon Jun 29, 2009 4:41 pm

Can't forget about worn stearing head bearings either
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Re: Wobble

Post  justin.ryan.ludwig on Mon Jun 29, 2009 9:10 pm

Are these issues likely to appear with only 7,000 miles?
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Re: Wobble

Post  twin1300 on Mon Jun 29, 2009 9:27 pm

justin.ryan.ludwig wrote:Are these issues likely to appear with only 7,000 miles?

That's about how long it took to completely wear the shock bushings to nothing!


....................bobby


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Re: Wobble

Post  nodakbassmaster on Mon Jun 29, 2009 10:12 pm

rubber bushings weren't good for very long...

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Re: Wobble

Post  horseman8m on Mon Jun 29, 2009 10:46 pm

justin.ryan.ludwig wrote:Are these issues likely to appear with only 7,000 miles?

I have never had a wobble, after i adjusted my windshield and I have 11k miles on her and over 5k on the CT. I have to admit pushing the speed limit ( Never Over Laughing ) and everything has been smooth. I replaced my shock bushings with nylon bushings when they wore out but didn't have a wobble with that ether.
good luck
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Re: Wobble

Post  justin.ryan.ludwig on Thu Jul 02, 2009 11:28 am

so how do I tell if the bushings are bad and how much of PITA are they to replace?
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Re: Wobble

Post  twin1300 on Thu Jul 02, 2009 1:55 pm

justin.ryan.ludwig wrote:so how do I tell if the bushings are bad and how much of PITA are they to replace?

Just look at the shock mounts and see if the washer and bolts are in the middle of the shock eyelet? If it is out of center toward the top or more shock eyelet showing on the bottom. They are gone!

Just take time and a vise. You really need the vise to press the nylon replacement bushings in. And of course you will need a persuader to get the shocks back on the studs....hehehehe


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Re: Wobble

Post  horseman8m on Thu Jul 02, 2009 2:56 pm

When i put my nylon bushings in my shocks I used a "C" clamp to press them in.
I found out some facts for you , rubber bushings have a crush pressure of 750 pounds per sq in.
High density polyethylene "HDPE" bushings have a crush pressure of 1,200 pounds per sq in.
Nylon bushings have a crush pressure of 16,000 pounds per sq in.
I went with the Nylon bushings.
P/N 6389K344
Nylon Bearing Sleeve, for 5/8" Shaft Dia, 7/8" OD, 3/4" Length, Packs of 5
$4.22 for a pack of 5
http://www.mcmaster.com/nav/enter.asp?partnum=6389K344&pagenum=1070

this photo shows the worn bushings and what they should look like.
http://www.rattlebars.com/cart/bushings.jpg

http://www.rattlebars.com/cart/bushings.html
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Re: Wobble

Post  justin.ryan.ludwig on Sat Jul 04, 2009 11:18 am

Thanks for all of the info. I will do some checking and if that is the problem I will probably do some cussing while fixing it. Thanks
Justin
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Re: Wobble

Post  daves1300s on Mon Jul 06, 2009 2:31 pm

I just was reading up on this because of changing out my stem bearings last week. I found one thread where the adjuster nut had just worked loose and changed the pre-load on the bearings. If all else fails just check to see if they are still adjusted properly. My 1300 had the lock nuts so loose I could turn them by hand when I took it apart. Just another thought.

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