School me on the GSXR rear wheel mod

[wakdady]

I've done a fair bit of searching but i still havent figured this out...
I want to do a 17" rear wheel swap on my '90 FJ. I don't have access to machining stuff and i'd rather not pay a shop for anything.
I was reading the GSXR wheel requires no machining and would work best for me.... BUT you lose the centerstand. Is it possible to retain the centerstand on any type of swap without having to machine anything?
that is the question.

thanks!

[Travis398]

    "Carsick" has the GSXR wheel on his bike, and i am pretty sure he has a center stand and didn't have to machine anything.

[Travis398]

also you could read the last GSXR wheel swap thread http://www.fjowners.com/index.php?topic=2694.0

and check the files section

[wakdady]

Thanks Travis!
That write-up is the one I intend on following for doing the swap, only it mentions to weld the brake torsion arm if you want to retain the centerstand. This, I cannot do because I have no welding equipment.
I am gathering the parts though, with the use of ebay and CL.

[FJmonkey]

I am doing the GSXR rear wheel mod, at least I had better do it. I pulled the trigger and a rear wheel is now in my garage (Simi_Ed, I blame you for the motivation on going 17", thanks). My budget is low and time is hard to find for completing the mod but I have made the commitment. I have not looked at the linkage location needed for the rear caliper but I think you might want to avoid using the center stand mounts. I suspect that I will be mounting a bracket to the rear swing arm to secure the rear caliper. This way rear braking is not affected during rear suspension movement. I also want to avoid welding so I will find a solution before I can Kookaloo with a 17" rear. let us know what you do for a solution to help us with moditis out.

[Travis398]

i thought it was possible to extend the center stand bolt and bolt it onto that.

I "assume" if you use a regular bolt you may need a bushing around it for the stand.

post up some pix as you get going  

[carsick]

My centerstand is retained with no modification. One last time (until the next time), the GSX-R brake arm will bolt to the frame using a longer bolt through the lower hole in the RH footpeg. Take out the Allen head bolt and run a 70mm long 8x1.25mm bolt (remember to buy a lock nut or castellated nut while you're there) through in it's place from the outside and secure the rod end with a lock nut inside the frame. Do try to get at least an 8.8 rated bolt, higher being better since this is mounted in single shear. Drill for a cotter pin if you're not in a hurry to get to the rally like me. I was concerned about the caliper ending up somewhere other than 6 o'clock, but it's straight down.  I notice no difference in braking behavior from the swingarm mounted stock design, but I'm also not keen on hard rear braking in a corner. I should probably take a pic since folks keep asking...
Doug

[Travis398]

please do

[Travis398]

ian.z9 posted this in http://www.fjowners.com/index.php?topic=2713.0

[wakdady]

this is a stupid question and i'm running on little sleep so maybe it's that but...
does that rear brake arm move up and down with the swingarm when it's bolted to the frame where the center stand is?
OMG, I posted this and looked at the next thread and it was this exact question! lol

[wakdady]

wait, doesnt someone around here have a rear caliper with a hanger? so they dont need the arm at all?
sorry, i'm new to all this and there is soo much scattered information.

[FJmonkey]

this is a stupid question and i'm running on little sleep so maybe it's that but...
does that rear brake arm move up and down with the swingarm when it's bolted to the frame where the center stand is?
OMG, I posted this and looked at the next thread and it was this exact question! lol

That depends on if it is connected to (or very near) the pivot point of the swing arm. If it not then it does not pivot the same as the rear swing arm. The amount of pivot is in question...If you don't really use the rear brake then it is simply not an issue. In fact if you don't use the rear brake then you don't need the rear brake assembly and could save some weight. If you use the brake in corners then it might be an issue if the corners are a little bumpy. Too much rear brake in any corner is a recipe for a rear wheel wash out. So, how much of a racer are you? Connect the link to the rear swing arm, or some other place neat the pivot point. Your decision is dependent on whether you think the minor inputs/changes from swing arm movement will affect your riding enjoyment. Its all good till your Kookaloo is adversely affected.

[billwest]

My method allows me to retain center stand.  Not that I want to, because the thing scrapes the ground when cornering.

I used a mix of Suzuki GSXR1100, GSXR750 and GSX750F parts.

No machining, no welding.

Bill.

[Travis398]

OMG, I posted this and looked at the next thread and it was this exact question! lol

there is soo much scattered information.

now you know why.

[andyb]

Ideally one of you guys who's done it could write up a how-to on it...