• 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.

Sprocket and chain ?

  • Thread starter Thread starter Clone
  • Start date Start date
C

Clone

Guest
If I drop the rear sprocket to a 39, how many links am I going to have to remove from my chain? Does anyone know a formula for figuring this out?
Also, my new chain has a rivetted link that I MIG tacked, can I use any companies o-ring master link when I break the chain again?
 
Assuming youre going from a #630 stock 45 tooth rear sprocket to a #630 39 tooth sprocket, that is 6 links divided by an upper and lower chain run, so the answer should be three. Or, to think of it another way, the chain wraps 180 degrees of the rear sprocket, so the chain is engaged on 22 1/2 teeth on the 45 tooth sprocket and for 19 1/2 teeth on the 39 tooth sprocket. 22 1/2 minus 19 1/2 is three. ............... You will need to remove three links to complete the circle around both sprockets without moving the sprocket.

Up until recently, I used clip masterlinks with never any problem. In using one, be sure to use one for the type of chain you have. Meaning if you have an RK SO "O" ring chain, buy an RK SO. "O" ring link. Different manufacture masterlinks in some cases will not fit at all and in other cases, the sealing ring is not correct. Specifically, Tsubaki links will fit no other brand.
The answer then is no, order the specific masterlink for your brand and model of chain.

E.


Clone said:
If I drop the rear sprocket to a 39, how many links am I going to have to remove from my chain? Does anyone know a formula for figuring this out?
Also, my new chain has a rivetted link that I MIG tacked, can I use any companies o-ring master link when I break the chain again?
Click to expand...
 
Last edited:
Clone said:
If I drop the rear sprocket to a 39, how many links am I going to have to remove from my chain? Does anyone know a formula for figuring this out?
Also, my new chain has a rivetted link that I MIG tacked, can I use any companies o-ring master link when I break the chain again?
Click to expand...

Your 1983 GS750ED came with a 112 link 530 chain, with 14T/43T sprockets front and rear. I would estimate that you would have to go from 112 to 110 links. Chain lengths are always in even numbers. You should use the Sprocket Optimizer to do the calculation. The results are usually accurate if the input info is correct.

I would only use an O-ring master link from the same chain company.
 
If the current sprocket is 43 tooth, changing to a 39 would mean shortening the chain 2 links. It may be possible to set the rear axle rearward enough that you dont have to shorten the chain. Depends on how far forward it normally is as to whether you will have that much adjustment available.

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