clunking sound from crankarm or crankset

fairweather1978

Apologies in advance if this one has been answered/discussed elsewhere.

I occasionally hear a 'clunking' sound from either the crankarm or crankset on the chain ring side of the bike. The clunking seems to coincide with going up hills or starting off from traffic lights in a high (ish) gear; it never happens when cruising along.

Does anyone have any thoughts as to what might be causing this? The bike is a bit middle aged nowadays - a ridgeback genesis hybrid that i bought second hand around ten years ago.

Any advice would be much appreciated.

cooldad

Loose crank? If so will be fubared very soon.

fairweather1978

thanks. would be a shame to be in possesion of a fubared bike especially if i am astride it when the fubaring begins. For the sake of clarity, if you have a moment, would you suggest getting it into the bikeshop ASAP?

cooldad

Fubared - farked up beyond all reasonable repair. Check if the crank is a bit loose on the taper.
Or take it into a bike shop.

fairweather1978

Ta

p.s. give into 'smilies'. its for the best. :-)

cooldad

Nope.
Once the crank loosens a bit (if that's what's wrong) it will destroy the arm very quickly. Assuming it's square taper should just need a tighten - a 17?or 18? or so socket.

fairweather1978

Thanks for the replies. It is in the bike shop and it is fubared.