Noisy Bottom Bracket Road Bike

There are multiple components that can contribute to a clicking or grinding sound in your drive train in addition to the bottom bracket including the chain the pedals the derailleur and the rear hub. A worn out bottom bracket will have looseness experienced as a clunk clunk clunk clunk as one foot then the other applies power. Bottom bracket bearings worn out or misadjusted.

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Sometimes even when a bike is new from the factory the bb isn t tight and it creaks.

Noisy bottom bracket road bike. Remove both arms and check both cups for tightness. Most bike frames use a threaded bottom bracket shell. Cannondale developed the bb30 bottom bracket in 2006 as an open standard. Bottom bracket noise creaks clunking clicking coming from the bottom bracket while cycling may indicate a serious problem.

Going through all of the points that simon mentions in this video should solve the majority. There are many standards in the road cycling world but none that causes more ire than pressfit. A creaking bottom bracket is one of the most common complaints heard by shop mechanics from customers who bring their machine in for a service but the noises you hear emanating from the bike can. The bottom bracket may not be properly secured into the frame.

That said the symptoms you describe seem to indicate a problem with the pedal bearings or the bottom bracket. Meet your bottom bracket. Remember bottom bracket squeaks have nothing to do with the age of the bike. If the bearing cups or retaining lockring are not tight there may be movement between the internal and external threads.

Chainrings bottom brackets pedals cleats and even your mech hanger can be the cause of your problem. It used a larger 30mm axle which allowed bigger bearings and a bigger bottom bracket shell providing extra stiffness and lower weight. Or the retaining rings or cups may be loose in the frame see next item. A cup and cone bottom bracket may only need adjustment.

Often you will feel the cluck as you pedal and before you you may.