Thoughts on GS with GSXR Rear

[Maulerman]

I recently bought an 82 GS1100 that the previous owner had grafted a GSXR rear swingarm and wheel but did not finish. All I really need to finish is a chain and a front sprocket(5/8" or 7/8" outboard).

It seems that I will run into interference with two frame tubes running in that area. I thought to convert to 530 chain to help but I don't think that is enough to gain the needed clearance.

I am considering milling the rear brake locating arm about 1/4" to 3/8" inch and adding a spacer the same thickness to the left side of the wheel to move the wheel over and hence move the back sprocket as well. I think this might work.

Has anybody done this before and do you have any thoughts?

Thanks,
Maulerman

[posplayr]

you woudl need a few more details; what rear wheel, what brake hanger,what swing arm.

usual setup is a 17x5.5" GSXR rear wheel with GS sprocker carrier and 5/8" offset sprocket (no need to machine teh sprocker carrier but go to a thin 520 chain). The spacers would be different due to the GSXR swinger.

Stock and bandit are more common.

Search for Katman posts on all of these conversions.

[salty_monk]

There is one 1000 with a GSXR rear end on here (1085, big cams etc) that runs a 520 chain to gain necessary clearance...

Not all chains are equal - for example when I researched 520 chains go from 19mm to 26mm - 530 chains go from about 22mm to 27mm. Depends on the chain itself.

You could also relieve the frame & get a plate or something welded back in - you have to be careful to build back in same or more strength than the stocker.

[Maulerman]

Follow up

I have determined that the swingarm is from an 88 model GSXR/J bike. I think the wheel is also an 88. The sprocket carrier is the original GS because it is six bolt vs. 5 bolt of an 88 GSXR. I don't know about the brake arm. I did some research and it looks like 520 chain alone might help me avoid frame issues.

I appreciate your input on this issue, I am anxious to get it on the road.

Maulerman

[ozgs]

Not sure of the dimensions, but I think some people have used the gs500 sprocket carrier to gain clearance.

[srinne]

If anyone has the demensions, I would greatly appreciate it too. I know the gs1000 sprocket carrier (cush drive system?) is thinner than the 94 gsxr carrier. I just posted a picture of this on my 'what cush with swingarm swap' thread.

Also, using a non-oring chain will give you a little more clearance.

[Jason the terminator]

If it is an 88 you can do a 530 chain with a 3/8 offset sprocket. The 88 wheels can only take a 5 lug carrier. 88 rear wheel is 18"x4.50" what size does the wheel say on it?