Horrid rattling

[Pedalbob]

My Trek Domane with tiagra groupset rattles when in top gears,sounds worse on rougher roads. Any ideas please.I am reluctant to mess about with adustments to derailleur as changes gear nicely.Thanks.Bob

 

[gavroche]

Do you have internal cables? My Specialized Roubaix has and it rattles on rough ground due to cables I think.

 

[ColinJ]

Can you tell exactly where the rattle is coming from?

 

[Yellow Saddle]

This is really not something you'll solve by proxy. Look for it when you ride.

 

[ColinJ]

Water bottles ratting in their cages? That happens on one of my bikes at higher speeds on rough roads. (top gears = high speeds)

I had that happening yesterday with a 500 mL bottle in the front cage of my CAAD5. I normally use 750 mL bottles and they don't rattle. I bent the cage slighly and that eliminated the noise.

 

[Pedalbob]

Can you tell exactly where the rattle is coming from?

Im quite sure it's mechanical. Maybe micro shift needs adjustment. Not sure though.

 

[Pedalbob]

This is really not something you'll solve by proxy. Look for it when you ride.

Not easy when moving at warp factor 9 trying to dodge potholes and girls and boys in tin cans.

 

[Yellow Saddle]

Not easy when moving at warp factor 9 trying to dodge potholes and girls and boys in tin cans.

A damn side easier than trying to diagnose it from text.
Try warp factor 2 or 3 and a safe place to ride whilst looking down. Or is that too complicated?

 

[Pedalbob]

A damn side easier than trying to diagnose it from text.
Try warp factor 2 or 3 and a safe place to ride whilst looking down. Or is that too complicated?

Agreed.But no rattles below the two top gears.

 

[Pedalbob]

[QUOTE 4934653, member: 9609"]is your cassette nice and tight on the freehub, can you rattle that about with your fingers (don't try this whilst riding) ?[/QUOTE]
Is good. Bike has only done 500 miles.

 

[lpretro1]

If bike is new and has done only 500 miles then likely all that is needed is the cable tension wants adjusting - quite normal for a new bike to need this after a bedding in period. The bike shop0 u bought it from should have offered a post-sales check up for it.

 

[sight-pin]

It could be the chain bouncing hitting the deraileur, I've noticed it lately on mine when in the highest last two or three gears when on rough roads.
Not sure why that is though: Chain stretched or worn?

 

[Pedalbob]

If bike is new and has done only 500 miles then likely all that is needed is the cable tension wants adjusting - quite normal for a new bike to need this after a bedding in period. The bike shop0 u bought it from should have offered a post-sales check up for it.

Thanks . possibly right. Bike has had first service but will ask LBS for advice.

 

[deptfordmarmoset]

Can you produce the rattle when the bike's upside down or on a workstand? If you get the same rattle you can then eliminate any road buzz. You should then be able to gently turn the pedals and actually see whether the chain is running freely. My guess is that the outer limit on the dérailleur is slightly too close to the chain.

 

[Pedalbob]

Yes. But I will never turn a bike upside doown(velominati). Funds at present will not cover bike stand or service.