rbloem

My new Sirrus 2.0 has very slight clacking noise between certain gears. Drives me nuts as I am picky. Is this because the drive chain parts are not high end? Curious

MikeWMass

Not likely due to quality of parts; more likely due to adjustment.
If you bought it from a shop, I would take it back to them.
If not, you could try adjusting the barrel adjuster for the rear derailleur 1/4 turn one way or the other and see if that helps.

shelbyfv

Lube your chain. I'm usually good with factory "lube" for awhile on new chains. However, the bike I bought a couple of months ago was noisy from the start and benefited from an early lube.

Iride01 

Might be just out of adjustment. New bikes sometimes need adjusting soon after they leave the shop. That's one of the reasons most tell you to bring it back and let them look at it in a few months.

Did they explain how to use the trim on the shifter? You not only need to add trim when getting into a certain combo, but you also need to know when to remove it depending on what your next shift is after adding trim.

Chain lube does go a long way to eliminating some clicks. So try that and see. Chains start making noise long before they really need lube. But it does serve to remind you to lube them.

edit... Although 8 speed may not have trim. Don't know, but if you don't know for certain you should find out. I never had an 8 speed, so there is no point in me finding out.

mstateglfr 

Can your front shifter trim? It's a position between actually shifting the chain between rings.
The trim is a small movement that gives space when the chain is angled an on either extreme end of the cassette.

In general and historically, entry level shifters less frequently have trim positions.


...or it could be a small adjustment in the back if the shifting isn't perfect with your cassette. You should determine where the rubbing and noise is- on the cassette or chain rings.

veganbikes

It is probably a bike that needs adjustment, regular maintenance and lubrication. Yes it is a lower end drivetrain but if you keep it properly adjusted and lubricated it shouldn't be exceptionally noisy especially not on a more recently purchased bike.

Keep in mind this is the Road Cycling sub-forum not Mechanics or Hybrid Bicycles so this is not the best place for these questions.

mstateglfr 

Road bikes have chain rub noise just like hybrids. The exact same things will cause chain rub on either style of bike. Seems like as good a place as any to ask the question. You may say 'well mechanics forum is best', but historically that place is mostly a couple useful comments, multiple comments misunderstanding the issue, and a couple of condescending comments. The same result can be had right here- plenty of knowledge, misunderstanding, and snark.

veganbikes

You are correct in that but still good to know for the new folks.