ultegra acting up
so i bought a new trek madone 4.7 about two months ago, and i've had some problems with the ultegra. whenever i start pedalling faster or putting more pressure on the pedals it starts making this weird grinding noise really loudly. does anyone know what that is or how i can fix it?
If you bought the bike from a dealer he should do the first tune up at no cost to you.
Is the noise caused by the chain rubbing the front derailleur?
they offer a 200 mile tune up and i already had that, and the front derailleur is fine
Is it possible that a brake pad is dragging on a rim?
Are the wheel axles fully seated in the dropouts? (Open and close the skewers with the bike upright and the wheels on the ground.)
Ya the brakes and wheels are all good
You could need a rear derailleur cable tension adjustment if the noise is the chain rubbing against an adjacent cog. +1 on taking it back to the dealer for a quick look.
Is it on the biggest rear cogs? I've noticed this on mine...there's like a RD chatter in the low gears...
That sounds like the "B-screw" is set too far out and the rear derailleur's upper pulley is rubbing on the cog teeth.
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