• Required reading for all forum users!!!

    Welcome!
    Register to access the full functionality of the GSResources forum. Until you register and activate your account you will not have full forum access, nor will you be able to post or reply to messages.

    A note to new registrants...
    All new forum registrations must be activated via email before you have full access to the forum.

    A Special Note about Email accounts!
    DO NOT SIGN UP USING hotmail, outlook, gmx, sbcglobal, att, bellsouth or email.com. They delete our forum signup emails.

    A note to old forum members...
    I receive numerous requests from people who can no longer log in because their accounts were deleted. As mentioned in the forum FAQ, user accounts are deleted if you haven't logged in for the past 6 months. If you can't log in, then create a new forum account. If you don't get an error message, then check your email account for an activation message. If you get a message stating that the email address is already in use, then your account still exists so follow the instructions in the forum FAQ for resetting your password.

    Have you forgotten your password or have a new email address? Then read the forum FAQ for details on how to reset it.

    Any email requests for "can't log in anymore" problems or "lost my password" problems will be deleted. Read the forum FAQ and follow the instructions there - that's what we have one for...

  • Returning Visitors

    If you are a returning visitor who never received your confirmation email, then odds are your email provider is blockinig emails from our server. The only thing that can be done to get around this is you will have to try creating another forum account using an email address from another domain.

    If you are a returning visitor to the forum and can't log in using your old forum name and password but used to be able to then chances are your account is deleted. Purges of the databases are done regularly. You will have to create a new forum account and you should be all set.

1100 Swingarm mod for underslung gsxr caliper

niclpnut

niclpnut

Forum Mentor
Past Site Supporter
what's the procedure for mounting the caliper stay bar on the stock 1100 swingarm for underslung gsxr rear caliper?

Is there a stock gsxr torque arm long enough to reach the engine mounts?

If anyone has pics/measurements of the orientation I'd greatly appreciate it.

Nic
 
Last edited:
It is possible to keep the underslung caliper as a floater by anchoring the torque arm to the bottom rear engine mount bolt.
Ideally you'd weld an extra bracket to the frame and use a longer bolt passing through a bracket each side of the torque arm so the mount is in double shear.
 
Just done it on a customer bike.
GSXR 750 18 inch rear, bandit disc, GSXR 750 J caliper, hanger and torque arm. Onto a longer bottom rear engine bolt with an extra bracket welded to frame as previoiusly recommended. Spacers made to suit.

Fits like it was designed that way. This would work with a 17 inch rear too.
This one was on an original GS1000 arm but it would fit the 1100 alloy arm just as well.

The owner may post pics when it's done...
 
if you mount the break caliper to the engiene mounts then when the swing arm moves ither the caliper or the caliper stay arm will break from the tension between them
 
Reaper0001 said:
if you mount the break caliper to the engiene mounts then when the swing arm moves ither the caliper or the caliper stay arm will break from the tension between them
Click to expand...

Not if they are using the floating style caliper bracket that a lot of gsxr's used.
 
kingofvenus said:
Not if they are using the floating style caliper bracket that a lot of gsxr's used.
Click to expand...

Even if the caliper floats, the length and angle of the swingarm and brake stay is important - the stay should be exactly parallel to, and the same length (axle to pivot) as the swingarm. The two should create a parallelogram. If not, the rear suspension will lock up when you apply the brake.

At least, that's always been my understanding.
 
I would think it should be attached to the swingarm only. Unless the rear is rigid.
 
that was my understanding but alot of people seem to be mounting the stay bar to a frame/centerstand bolt hole location.
 
I would think if its attached to the frame it would restrict suspension movement while braking
 
Oh dear, the misconceptions here....

The caliper hanger (GSXR) has a bush in it which lets it pivot on the axle as the suspension moves...The front end of the torque arm has a ball joint which again allows movement.
While a parallelogram linkage is ideal, a non parallel setup works just as well - and does not lock up the rear suspension while braking - or introduce strange torque reactions.
I'm aware of non parallel rear suspension geometry on race cars, used for pro or anti squat, IMO the loadings put into a non parallel brake linkage are pretty low and any angular variation caused by suspension movement while braking is unnoticeable....

Been there, running that on more than one bike....
 
ALL 1st gen gsxr's came factory with the brake torque arm mounted to the frame .....
and a floating caliper mount ...
 
You must log in or register to reply here.
Back
Top