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Buell Forum » Old School Buell » Archive through July 21, 2012 » First signs of isolator failure? « Previous Next »

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Randy_spann
Posted on Friday, July 06, 2012 - 10:17 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I'm noticing a new vibration! M2 2000, if I pull in the clutch at speed and let the engine idle, the vibration goes away. Anyone know how to properly check the isolators?
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Jramsey
Posted on Friday, July 06, 2012 - 10:29 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Look for tears or separation on the bottom side where it goes through the frame.
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Eshardball
Posted on Friday, July 06, 2012 - 11:01 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Fronts or rears will shows cracks. On my S1, when the back ones tore, it felt like someone was hitting my footpegs with a shovel on every bump. Didn't feel anything when the front was starting to tear but found it early and changed it before something bad happened
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Randy_spann
Posted on Friday, July 06, 2012 - 11:07 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thanks for the input guys!
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Jim2
Posted on Friday, July 06, 2012 - 02:41 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

For the rear iso's. Remove your frame plugs over the frame holes if you have them. Look straight into the frame hole and see where the isolator mounting bolt sits in relation to the frame hole. On a new set of iso's the mounting bolt will reside in the lower rear quadrant of the frame hole (below horizontal center line and towards the rear of the bike in relation to the vertical center line).

When the iso's wear out they will start to separate and sag. With worn iso's the mounting bolt will appear in the upper rear quadrant (at or above center line in relation to the horizontal center of the frame hole).
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Roderick
Posted on Saturday, October 20, 2012 - 11:29 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

On a new set of iso's the mounting bolt will reside in the lower rear quadrant of the frame hole (below horizontal center line and towards the rear of the bike in relation to the vertical center line
My S1 is about 11k miles. It was a couple weeks ago where one day I got serious vibrations through both foot pegs. I thought it was because of the broken eyelet on the SS2R's front bracket and the can's shaking was producing the vibes.

Today, the SS2R is cleaned, repacked, and front bracket repaired. Exhaust sounds much smoother and deeper. But the vibrations remains. I checked the locations of the rear iso bolts and they are as stated. It is the left peg with the most vibes.

Any else I could check? I guess it is possible that the isos could fail with the bolts staying at the expected locations.
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Buellistic
Posted on Sunday, October 21, 2012 - 12:58 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

What is a SS2R ???
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Roderick
Posted on Sunday, October 21, 2012 - 05:16 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

What is a SS2R ???
The exhaust can. Vance/Hines.

I thought when it was hanging just by the rear mount and the header clamp, it shook enough to transmit to the pegs. Now that it is repaired and fully secured, I do not think there are any vibrations at all (?) and can I rule out the can as the source of those vibrations? If yes, then it has to be the isolators.
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