• 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.

Standard Real Wheel Offset - GS 1000..., HELP!

  • Thread starter Thread starter Anonymous
  • Start date Start date
A

Anonymous

Guest
I race a GS 1000 in Vintage Period 3 Heavyweight in Canada. I am currently having a set of old 18" Dymags refurbished in England and I need some help with the rear setup, specifically what offset to spec for the sprocket to line up with the stock sprocket on the engine.

The engine is currently out of the frame and I have been using old Kawasaki wheels and swingarm with custom work done to fit the rotor. I bought the bike this way, and frankly, am not confident the wheel is perfectly centered so I don't trust the current offset measurements (my best reading off the rear tire mounted on the bike gives me 3 23/32" - just under 3 3/4" - centre of wheel to centre of sprocket).

I will be running an Avon AM23 150/70VB16, nonDOT racing compound, on the appropriate rim width, which will give me an Overall Width on the mounted tire of 5.9". THis will obviously require minimum clearance of 2.95" to the inside of the chain with an allowance for tire flex and some chain movement on the sprocket.

The current measurement will allow me to clear the tire comfortably, but I want to make sure that I will line up with the stock engine sprocket when the wheel is perfectly centered on the frame...., which brings us back to my question.

Can anyone tell me what the stock offset is for the rear wheel so that it lines up with the stock sprocket position (hint: can anyone measure their stock GS 1000, please). If it turns out to be approx 3.5" plus, then I should have no clearance problem and will simply spec the stock GS 1000 offset for the rear Dymag.

If it turns out to be less, then I will have to spec a minimum to clear the tire (any thoughts on what that would be???) and then adjust the sprocket on the engine to line up with the wheel sprocket.

Any help on this will be greatly appreciated as I don't have access to a stock GS 1000 engined bike (8 valve). THANX!!!

Tony.
 
I will try to remember to measure mine tomorrow.
Why are you having your wheels refurbished in England?
 
Thank you Paul!

Someone has suggested to me that it should be around 84-85mm, which would be approx. 3.4" centre of wheel to the inside mounting surface of the sprocket (not the centre of the teeth).

I would appreciate knowing what your measurement is.

The wheels are back in England to visit the mother ship from where they came..., Dymags are manufactured in England and they also offer a refurbishment/remanufacturing service.

Tony.
 
Yes I know that thery're made here, but I was wondering what they could do to refurbish them. They are cast magnesium & I was a bit puzzled what they do to them (or could do!)
I used to help a guy who raced in the British Touring Car Championship (BTCC), and modified the offset on his Dymags, but that was easy - just machine the mounting face where the wheel bolted to the hub. As long as you don't get the material too hot':roll:'':roll:'
 
Please forgive me, you would have obviously known they were English..., remember, I'm used to being here in the colonies...

They are checking the structural integrity of the magnesium, resealing the wheels (corrodes rapidly if not), powder coating, revising the cush drive to current specs as I don't believe they have some bits for the old model, and replacing the sprocket and the bearings to my specs. I'm sure that I could have had most of it done locally, but I prefer to have the original manufacturer deal with it, especially since its magnesium. Gives me more confidence.

Tony.
 
You must log in or register to reply here.
Back
Top