GSXR USD fork tuning/adjustments

[tyler1150]

Guys,

Now that I have my gsxr inverted front end installed onmy 1150, I see that I have more fork travel than I wanted. I was expecting them to be to short.

Does anyone know how they can be adjusted with internal stops or some other "magic". It was simple on the stock forks with the lowering tubes from schnitz.

Any help would be greatly appreciated

 

[joe.d]

what front end did you use

 

[tyler1150]

I used a set from a 92 gsxr 1100.

 

[Anonymous]

Now that I have my gsxr inverted front end installed onmy 1150, I see that I have more fork travel than I wanted. I was expecting them to be to short.

They are shorter than your stock forks. What were you looking for and what are you doing with it? It is possible to add internal stop tubes to limit travel, but why do you want to?

Mark

 

[Anonymous]

I'm a little confused as to what you are asking, since nobody would seemingly want to decrease their fork travel. If it's bottoming out then you'll need to increase the preload untill it stiffens up. If it's still bottoming then you'll want to lower the fork tubes in the triples until you clear up enough space.

Other than that I don't understand what the problem is :? Maybe you really just need to set your sag properly :?:

 

[Billy Ricks]

The reason your bike seems to be taller now is the 1150 had a 16" and now you have a 17" wheel. Do as Mookie suggests and get the preload set up properly to start with. Start by adjusting the sag, that's how much the bike squats with your weight on it. It's the difference between the length of the fork fully extended and wheel off the ground, and the length with the both wheels on the ground and your weight in the seat. If you want a firm ride shoot for 1" of sag. If you want a more supple ride start with about 1 1/2".

You have adjusters on the top of each fork to change the preload to get the sag how you want it. Inside the preload adjuster you will see a slotted adjuster, that's for rebound damping. There is another adjuster at the bottom of each fork, it's for compression damping. You don't want to use any more damping than it takes to keep the suspension under control. You have to let the spring do its job and at the same time keep it from going crazy. Usually the more you turn the adjuster clock-wise the more damping you get. Start with your settings maybe 40% above the lightest setting. If you have say 12 clicks of adjustment start at about 5.

If the bike still feels too tall you can always raise the tubes in the triple clamps. It will quicken the steering though so do it in small increments.

You should also get the sag at the rear setup to match the front.

 

[Addy Leung]

May I ask the feeling of that 92 GSXR 1100 forks on Old GS? it is 29.5" long from alxe to top and it is the thicker fork outer tube one of GSXR, 52mm-top & 56-bottom of the triple tree, with 41mm inner tube.

 

[Addy Leung]

Hi tyler1150,
Hope you would share some information( performance and handling) about this fork on GS1100, because I am also going to install it on my GS1100 which I collected sometime before. Therefore, I would have the above informations of it for others' reference.
Hope it would not be a bad choice for me. Addy

 

[tyler1150]

Guys, appreciate the input. Sorry for the delay in responding

My delima was due to the increase in wheel diameter (16" to 17") and a very low profile rear tire(used to mock up). My desired low rider stance was not being realized. (Thanks Billy!)

After adjusting thesag andgetting new rear rubber, I am where I want to be. (Thanks Billy and Mookie)

Addy: The performance is like night and day! After installing the 92 1100 forks and riding around the block, it cured my desire for a newer bike.
One of my riding buddyshas an 82 gs1100e with a very radical setup. Basically a pro street bike that he can stand a 100 or so mile ride. He made limiters (tubes) and installed them in a set of 94 1100 forks. Even his radical setup while very quick and twitchy handled better than my 1150 with a stock front end. Will be glad to give additional details.