TOPIC:

Street Fighter LTD wrote: ZED
What is the length of this arm compared to a stock arm ???

Dave

I think it's around 3 inches.

Dave wrote:

ZED

What is the length of this arm compared to a stock arm ???

The Yamaha XJR1300 length is 560 mm from pivot to wheel axle

www.sellifighter.de/technik/masse/masse.htm

Heres a GSXR600 arm on my KZ1000 CSR. I had a set of cleats made up and welded on the arm to keep the twin-shock set up. There was quite a difference in the pivot tube diameters so theres an insert in the swingerarm pivot to accept the original Z pivot pin. I cant remember if any spacers were needed (its been a while) but definately didnt need anything taken off at the pivot.
The rear footrest hangers had to go and I even had to grind a bit off the sides of the swingarm where it entered the frame, to stop it binding when the shocks compress and the arm lifts.
I also did something with the rubber chain protector as it didnt line up with the chain run but again,I cant remember exactly. (its all in the build thread).
Satin black powder coat and some stickers finished it all off nicely.

Kawasaki 636 , close to perfect fit.
Kawasaki zx7 does not fit. Too bad too it's a good looking beefier swingarm.

I am a little undecided if i go mono or twin shock this seasson!?!? Any suggestions???

twin shock just looks right on these old bikes.

Thank´s DoctoRot, so i will go the ZX1100 (GPZ1100 UT) engine and EFI swap first this season. All needed parts are ready to go.

Very interested in your efi swap. Keep us in the loop.

Will do.....

Not a Z but a saucy looking swingarm for sure. Turned up on the 'Butchered Classics' page.

chain adjuster is pretty trick!

I used the tried and true ZRX1100 swingarm. However, I upgraded to the 20mm swingarm through bolt. I used a reamer and and fit it precisely like they did back in the days of AMA racing, so there is no end play at all. I had to tap it into place like it should be....thanks DR. GAMMA! I read a recent article where one of the racer's, I think it Roberta Pieatra (?) said the bikes handle so poorly because the rear swingarm end play caused weaving and the slappers. He said they used to jam feeler gauges into the swingarm holes to take up the slack.

Turns out the ZRX1100 rear axel is the exact length and nut size as the GPZ1100 swingarm bolt. So I just turned one side down to be slightly tight for bolt side and bored and reamed the other frame side to slightly tight. Now I have to tap it in, no slop, and its a larger 20mm bolt.

577Nitro