O.k.,
I've got the swingarm ( 86 750) back on, correctly I think ( LOL). when I wiggle the arm from side to side, tight as a drum. When I move the swingarm up and down by hand, I,ve got about 1/4" movent. No movement seen at the shock absorber mounting points, just at what appears to be the middle of the shock lever. Is there supposed to be any movement? I'm pretty sure the cam is oriented correctly. Could the shock lever bearing be shot? Any help or thoughts would be great. http://www.gixxer.com/forums/images/graemlins/punk.gif

That's weird. When you move the swingarm up and down by hand, do you mean you have the bike on a swingarm stand and you're pulling up on the rear of the swingarm near the chain adjusters?

You did remember to reinstall the three spacers inside the swingarm itself, right? There are two short spacers and one long spacer.

Can you post some close-up pix of each side of the pivot linkage?

there is slack in those rear ends, that is why that eccentric system was never used again...

I just wanna see a pic so he can point to where the movement is located. It may just be the eccentric cam spinning slightly. I don't like the eccentric pivot linkage either, honestly.

I installed an 1100 pivot linkage on my 750 yesterday, it raised the rear of the bike about 2 inches. Should speed up the steering nicely. http://www.gixxer.com/forums/images/graemlins/wink.gif

Yes,
The bike was supported under the engine, when grabbing the end of the arm, it moves up @ 1/4". When the bike is on the ground ( wheel, shock) if I pull up on the rear of the bike, same movement. It looks like it is happening right in the center of the lever. Thats why I wasn't sure if the lever bearing might be junk. So, you say these units have play? http://www.gixxer.com/forums/images/graemlins/dunno.gif

I'm guessing the movement you see is nothing more than the cam spinning slightly like it's designed. It rotates in the middle while the two ends of the linkage are bolted to the frame and shock. Simple but odd.

I had a talk with a suspension tuner about this ancient linkage recently. He said this linkage actually works pretty good, but it's not sealed so there's no way to keep crud out of it (this pivot linkage was also used on Suzuki dirtbikes in the '80s....I bet those guys had to remove/clean/lube the linkage after every ride!). And of course it's difficult to customize the ride height, unlike dogbone linkages.

Thanks,
I had a buddy of mine look at the lever while I was " bouncing" the rear up and down. He said there is movement, but, nothing that should be to bad. Oh well, I guess once it's back on the road it'll let me know!! LOL http://www.gixxer.com/forums/images/graemlins/punk.gif

i think if i remember correctly my 86 1100 did the same thing
never made a dif. on the road couldnt tell
id say run it http://www.gixxer.com/forums/images/graemlins/smile.gif