Gs1100 swing arm swap (pics)

[bradshaw106]

[/IMG]Ok guys, I'm in the process of installing a gs swing arm on my tracker project. I have researched the heck out of it and found some info but not much on the black art of swing arm swapping. I havnt finished the swap yet but figured I would post some pics of where Im at. Also there wasn't much info some I'm figuring it out as I go and any advice on how this could done easier is welcomed. I took a bunch of measurements of the new swinger but left them in the garage, will post them later
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[bradshaw106]

The swing arm is about a inch too wide at the pivot point. So I have decided to modify both the frame and swing arm. One reason is the the swing arm is machined on the inside of the pivot tube to receive the bearings but only so deep. Their is about a 1/4" you can press the bearings deeper. So I took about a 1/4" from each side. In the pics below you can see a before and after I ground. The machining on the outside of the tube is where the dust seal sits and will need to be redone .
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[bradshaw106]

Now I need to grind the frame are about a 1/2". What I'm not sure about is how to go about grinding the frame so it's square and swing arm remains centered in the frame....?
One idea I have is to completely grind the factory spacers off. Then use the lathe to make spacers to center the swing arm?? What you think?
Here is a pic of the bike it is going on
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[bradshaw106]

Ok have a few measurements.. Keep in mind that I took these with a tape measure
Pivot width 8 11/16"
Pivot to end of axle travel 22"
Id width ( no chain adjusters). 10 3/8"

I got the swing arm to fit it's just sitting there but gives you an idea on how it will look.
I'm quite surprised on how only 2" length made quite the change in how it looks.... Could be just me tho?
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[hmusket]

Good to see you got the swing arm sorted out. Definitely worth the trouble to get those wheels to work out. Going to need to get some longer shocks. There must have been an easier way to get the battery box out besides cutting the frame Kidding aside, what's your plan for that part of the frame?

 

[bradshaw106]

I have another seat hope bent up. But I'm going to wait to fit it until I get the running gear all situated
I really like the wheels, the bike is going to be black withe gold wheels. Ought to look pretty sweet

 

[pregrid]

I REALLY like the way this is going.

 

[azman857]

I agree. I'm gonna keep an eye on this build. Those wheels and forks look hot on that frame.

 

[pregrid]

I agree. I'm gonna keep an eye on this build. Those wheels and forks look hot on that frame.

yeah, and it ain't your run-o-the-mill chopper/bobber/cafe/tracker deal (not that there's anything wrong with that)

 

[Wizard of Smiles]

hows this moving along?

 

[MacMcMacmac]

I keep wondering what happened to all those poor old GS1100's....

That swingarm will take up to a 180 tire btw. You would have to rig up the proper sprocket offset though.

 

[bradshaw106]

It's going slow... I got a virago I have been tinkering on. Trying to get the chain alignment right was a pain! Had to build a offset sprocket and machine down the Cush drive....

 

[80brat]

I know this is a old post, but would like to see and read more about

 

[80brat]

Anybody got info about this, a link pics anything will help thanks

 

[jagalloway]

i would love to see more info on these swingarm swaps. sounds interesting