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sprockets and chains

  • Thread starter Thread starter dtkid
  • Start date Start date
D

dtkid

Guest
Is it true that one should always change the sprockets whenever changing the chain (and vice versa). I'm building an 80' GS750L that I will ride only on rainy and/or winter days---so I'll probably never have the bike over about 60mph. However, something ain't right with either- one of the sprockets or the chain (or with my luck, both). As the back wheel is turned the chain gets tighter, then looser, then tighter, etc. Any thoughts? I would of course like to get this beauty done and still have some money for gas. Being an educator for the state of Kentucky pays less than being an aluminum can collector.

Much Thanks from the Mountains: dtkid
 
Replacing both sprockets and the chain at the same time will give you the most miles from all three parts and probably be the most economical in the long run. Guys on a budget will just slap on a cheap chain and ride knowing that their new chain will probably only last half as long (6k miles or so?). Some guys will go thru 2 or 3 chains per set of sprockets. Inspect your sprockets, worn ones will not have symmetrical teeth and look more like an artist's rendition of ocean waves. There should also be a flat spot on the tip of each tooth, not a point.

The tighter/looser syndrome is evidence of a stretched/worn chain. If you compare a new chain to your old one you will probably be able to see the difference in the length of the links.

Having said that, there are stories of riders on a budget at umgweb.com who have kept cutting links out of their "knackered" chains and/or worn their sprockets down so far that the chain was jumping links and acting like a belt drive! I prefer to have teeth on my sprockets, thanks all the same...
 
Sounds like the chain is stretched. It doesn't stretch evenly. That's why it's tight, then loose. If you must, adjust the chain so the tightest part has about an inch and a half of play on the bottom.

I've been slamming on different chains for a number of years. If you spend the extra money on an expensive chain, it will last longer and not stretch as fast.

I've gone about 20,000 miles that way, but kept it well lubed. I'm gonna get new sprockets soon, so I don't die. This is getting scary. 8O

-istp
 
Not only is a quality chain the way to go, do the same with sprockets. I've had brand new chain and sprockets act the same as yours. The last time I did a 520 conversion using a Regina gold o-ring chain with Vortex sprockets. The chain has never rolled smoother. I haven't had to adjust it once in the year since.
 
Keep in mind that this can (to some degree) be a completely normal occurance, even with brand new sprockets and chain. It should however be quite minor, and not something you would notice too much- unless your chain is adjusted too tight.
 
Thanks for sharing the knowledge folks.

Much Appreciation from the Mountains: david
 
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