Does anyone know much about square taper cranks?
I use a shorted square taper on my TT bike and noticed the drivechain seemed to be making tonnes of noise.
I deduced that the noise was coming from a small side to side movement in the chain causing rubbing on the sprocket above the one the chain was currently sitting.
The side to side movement was due to the chainring moving very very slightly from side to side, which seems to be the crank/spider not the bb.
I understand ST is old tech, but I like the narrow factor it gives me ~130mm, and nothing on the current market comes close to that.
I don't know if this noise costs me anything in terms of watts, but wondering if anyone knew of a fix? I've tried all 4 positions of the chainset.
Maybe I could shim the chainring?
Also I can remove the noise by pushing slightly on the rear mech cage to reduce tension of the lower chain as it goes to the front ring.
I use a shorted square taper on my TT bike and noticed the drivechain seemed to be making tonnes of noise.
I deduced that the noise was coming from a small side to side movement in the chain causing rubbing on the sprocket above the one the chain was currently sitting.
The side to side movement was due to the chainring moving very very slightly from side to side, which seems to be the crank/spider not the bb.
I understand ST is old tech, but I like the narrow factor it gives me ~130mm, and nothing on the current market comes close to that.
I don't know if this noise costs me anything in terms of watts, but wondering if anyone knew of a fix? I've tried all 4 positions of the chainset.
Maybe I could shim the chainring?
Also I can remove the noise by pushing slightly on the rear mech cage to reduce tension of the lower chain as it goes to the front ring.