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Buell Forum » Knowledge Vault (tech, parts, apparel, & accessories topics) » Chassis » Suspension - Forks, Isolators, Shocks, and Swingarm » M2 Isolators « Previous Next »

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Big_jim59
Posted on Tuesday, June 12, 2018 - 12:26 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

At the risk of plowing old ground I wanted to post about my experience replacing the front a rear isolators on my 2002 M2 Cyclone.

What lead me to do it was a pronounced vibration felt through the foot pegs. On inspection I found the front iso was torn. The rear looked OK but the right side star bolt was not pulled up tight against the isolator. The washer could be rocked back and forth with a full 1/32" of play. I had to check that out.

It took the better part of a day to get the isolatores out and back in the rear. I took it really slow since I didn't want to mess anything up. It would have gone much better if I had not tried to put the right side iso in the left side. It will not work and is very frustrating. I did buy a 5/8" - 18 bolt and a tap for and was able to clean up the threads in the isolator mounts (they were buggered up) and I used the long bolt to check them for depth. One of the reasons I took the rear isos out was to find out why one of the bolts was not tight.

I got the back end done last night but had to wait until this morning to get the back wheel on. The rear fender (huger) is mounted on well nuts. on the left side the screw is obscured by the frame. I went to the hardware store and got a longer 1/4" 20 screw and a nyloc nut and ran the screw in from the back and put a nut on the front. In a way the Buell feels a bit like a prototype bike. There are some rough edges.

After that the front was relatively easy. It did require bruit strength to bust the mounting bolts lose. It was made more difficult by the fact that there is no room for a ratchet or cheater bar and very little room to turn a wrench at all. Fortunately I have a set of extra long box end combination wrenches in SAE sizes. Even at that I have a very sore hand.

The front rubber idolator was torn but was far from failing. The new one is made better. I know that a lot of Buell riders post and say that changing the isolators didn't make any difference or that it made the vibration worse. I can tell that it really made things much better. The mirrors are almost useable above three grand now. The serious feet tickling is gone too.

I may have made one error in installing the front mount. When I removed the old mount these was a heavy washer or spacer between the mount and the engine bracket. The installation guide didn't mention this but I reinstalled it. It has been bugging me a little.
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Big_jim59
Posted on Tuesday, June 12, 2018 - 12:42 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

This is my mounting rig.


It looks stupid but it works!
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Buellpete
Posted on Monday, March 22, 2021 - 10:12 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

hey everyone,my top mount was r/s on my cyclone so i came up with a chassis to cab isolation mount of a toyota landcruiser was nearly identical even the boltholes were the same result zero cost bit of time and no more vibration.
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Buellpete
Posted on Monday, March 22, 2021 - 10:24 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

i own a 2000 cyclone have had numerous rear shock rebuilds [broke one shaft] and replaced shock twice.good replacement shockies are a bit $$$$$ in Australia,has anyone seen a dual shock setup that worked and looked alright?thanks.
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Screamer
Posted on Thursday, May 13, 2021 - 11:08 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

BigJim,
Using the washer is fine. Research on rear isolator failures showed that one of contributors was a lack of isolator compression. Floating tolerances and excessive spread caused by improper use of the installation tool, could cause an isolator failure because it needs to be compressed somewhat in order to survive. At one time, a program kit included two washers with a pair of isolators.
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