bump

 

The short of it is yes it may work fine but chances are no.

The linkage position and arc travel is important for the leverage ratio(constantly changing). The linkage is a method of making a linear spring progressive because the amount of force transmitted to the shock changes through the travel. Each linkage setup is a little different and the ratios depend on the angles of everything as well as lengths(swingarm, pivot to pivot and so on).

If you kept everything the same, angle of all the links, angle of the swing arm, angle and location of the shock then in theory it should work in the same manner but even a small change can make a big difference.

 

IMO, one of the safest and best ways to do a rear end swap is to use a donor swingarm of similar dimensions and modify it with new brackets to fit the original shock.

To swap a new swingarm for the 25-year-old one on my RZ500, I chose an '07 R6 model. So that the frame can remain stock, the R6 pivot tube was cut down, and spacers were made to retain the smaller RZ500 pivot bolt.

Since the shock on the RZ500 is underslung, the original shock hole in the R6 swingarm was sealed up. Then, brackets were fabricated and welded to the bottom, so that the RZ500 shock and linkage could be used.

If I ever want to put the bike back to stock, the R6 swingarm just needs to be removed, and all of the stock pieces can go back on.

Hope this example helps.

 

I am swapping the stock unit from an FZR to a SSSA from a VFR. The VFR swinger is WAY heavy and too wide. It's going to take serious effort to line it up. I am going through with it only because I have a professional helping me with the work. I would not suggest taking the leap unless either you, or someone you know has a clue what's going on. Modifying geometry and suspension on a frame can be dangerous if you make bad choices.

Oh, and the bike is not being built for racing, so I am not very concerned. If you plan to use it for track, racing, drag racing, etc.... Don't do it unless a professional fabricator gives you the nod.

 

Oh, and the bike is not being built for racing, so I am not very concerned. If you plan to use it for track, racing, drag racing, etc.... Don't do it unless a professional fabricator gives you the nod.

I would go even further to say - if the bike will be used for ANY type of racing - don't use a SSSA. SSSAs are good for show competition, but bad for track competition. Basically they are just heavier and less stable than conventional swingarms.

IMO, the only good SSSA is an OEM setup that came with the bike, and even then, it's not as good as a well-designed standard swingarm.

 

cheers guys that was what i was thinking.
im not to keen on a swap that is going to screw up any thing up. im not going to push this thing any where near to its limits but i want to know its going to behave its self when i am on it. if i can find a swing with close dimentions to mine that i can mod then all good but till then i think i will stick with stock.

Any thing that efffects the handeling of my bike in a negative way has no place on my bike.

 

BTW

im not talking sssa. to tell you the truth i dont ilke them. im talking more like the r6 one above.

and can any one tell me if they know of any other bikes with the shock set to the left???

 

its not that common but there are definately some factory racers with sssa. bmw and ducati i think. how many of us are at the level of pro competition where the bikes performance isnt keeping up with our skillset? i like the fast easy tirechanges more than the sacrifice of a couple pounds that i dont miss the difference. but you are right about the weight i guess. i just cant feel the difference