• 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.

'78 GS750 Chain and sprocket question

  • Thread starter Thread starter Kyle M.
  • Start date Start date
K

Kyle M.

Guest
I am in the market for a new chain and sprocket set. I know I need a 630 chain, but does it have to be O-ringed?

Another question, how many teeth are there on the front sprocket? Should I step down a tooth?

Where is a good place to buy from?

Thanks
 
Yes, you want an o-ring or x-ring chain. Non o-ring/x-ring chains wear out a LOT faster than their o-ring/x-ring counterparts.

Stock gearing on your bike is 15 teeth front, 41 rear. http://www.jtsprockets.com/52.0.html?&L=0&sel_uid=4962&p=

If you drop a tooth on the front sprocket, you'll get better acceleration but less top end speed. Vice versa on adding a tooth to the front Cruising RPM will be higher/lower too. Adding/subtracting one tooth to the front is about the same as adding/subtracting three to the rear.

Z1 Enterprises has great prices and service. You can get all the parts you need here: http://www.z1enterprises.com/catalog.aspx?pid=GS750EC-1978-MP0
 
Last edited:
By all means buy an o ring chain. I bought a non o ring chain, and had to adjust it every week. Wore it out in a year of riding, about 5000 miles. I replaced it with a o ring chain and have put about 12,000 miles on it, and should get at least that many more. I have not had to adjust it much, about once every 2500 miles or so I tweek the adjustment a little.

Greg
 
On the links you posted I saw whee it said 630 to 530 conversion for the sprockets, does this mean with these sprokets I can run a 530 chain? I have a new one sitting in my shop....that would be nice.
 
Yeah, you can go with a 530 conversion. 530 sprockets and chains are cheaper and easier to find than 630 and the chains are a bit lighter. You'll want to go with a 17 front, 47 rear tooth sprocket to if you want to keep your gearing ratio stock and the sprocket diameters the same as your old 630 sprockets (so the chain won't drag on the swingarm).
 
Last edited:
Your web links helped with my question on sprokets. Thanks! I have another question. Do you know if a 1980 gs550 can be lowered and how?
 
80GS1000 said:
Yeah, you can go with a 530 conversion. 530 sprockets and chains are cheaper and easier to find than 630 and the chains are a bit lighter. You'll want to go with a 17 front, 47 rear tooth sprocket to if you want to keep your gearing ratio stock and the sprocket diameters the same as your old 630 sprockets (so the chain won't drag on the swingarm).
Click to expand...

Thanks 80GS1000! I didn't know any better, and back in March had a new 630 chain and two new sprockets with the stock gear ratio put on, and the bike ran great for a while. The chain the shop put on was a non o ring type and after about 4,000 miles, I'm due for a new chain already, so am going to go with the 530 conversion x-ring type. Also thanks for the note on keeping gearing ratio's the same.
 
You must log in or register to reply here.
Back
Top