Back to the shop AGAIN!

Does anyone else have this problem? Turn the rear wheel and the chain is tight at one point and then loose the rest of way around. I've taken the bike to the shop twice (which I've noted in past threads) the chain and sprockets where changed the first time and the rear sprocket was changed again at the second trip to a different shop. The same problem exists, the chain and spockets are fine, what else could it be?

 

thanks for the reply, the chain has always been adjusted correctly. I've always been a stickler for keeping things perfect.

 

Overtight was my first thought too. It doesn't take long to really dork up a new chain by not adjusting properly, but it sounds like you're all over that.

I'd check your suspension sag too, and be sure that when the bike is loaded (as you usually ride it) that the chain tension is still okay and that you have the proper preload.

Edit with one more thought...... Make sure your ecentric adjuster is properly torqued. As you load and unload the rear, it may be moving on you. Long shot, I know.

 

every bike i've ever adjusted the chain on( and believe me i've done a few)has a tight spot at one point, it's the way that all chains wear, check the chain tension at the tight spot and adjust accordingly and all should be well, Even on a new chain the tight spot is usually established after about 100 miles.

 

Thank you...very good information. When I turn the rear wheel you can see the chain moves up and down. I don't think it's a hard spot in the chain, the chain is new (1 day) and it did the same thing with the old chain. The thing that bugs me is the mechanic told me it was now perfect, but in fact it is obvious that he spent some serious time getting the chain just right so I wouldn't notice that he didn't fix the problem. I'll take it back Friday just to see what he has to say about his lie.

 

Some brands of sprockets aren't known for being round. (and they are hard to truly check with measuring tools) Sounds like an out of round condition on 1 or both sprockets. Is the tight spot in the same location on the chain? Or, is it at various locations on the chain as the sprockets are turned? In industry, we try to not run a divide by 2 ratio as it is hard on chain life (24X48 on H-D's is a prime example. Kills chains cause the links run in the same teeth every time.)

Just food for thought.