A
Amit
Guest
I've posted pictures here of my failed Dura-Ace crankarm.
http://www.atmosp.physics.utoronto.ca/people/amit/crank.htm
They simply "folded" when I stood to pedal. The arm bent until it hit the chainring pin. The bent
crankarm hit the chainstay and I didn't fall.
It sheared like a pop can (you can see it's hollow), but didn't separate into two pieces.
I can't see what caused the failure. You can see that the crankarm is buffed smooth where my shoe
occasionally touched it, perhaps that initiated a crack ?
Shimano decided not to replace the crankarm since it is older than the 3 yrs. they warranty Dura-Ace
parts for. I didn't pursue the matter further with them (also my frame is dented where the crankarm
struck - I didn't pursue this either).
I can take some better pictures if someone wants a closer look at the damage.
-Amit Ghosh
http://www.atmosp.physics.utoronto.ca/people/amit/crank.htm
They simply "folded" when I stood to pedal. The arm bent until it hit the chainring pin. The bent
crankarm hit the chainstay and I didn't fall.
It sheared like a pop can (you can see it's hollow), but didn't separate into two pieces.
I can't see what caused the failure. You can see that the crankarm is buffed smooth where my shoe
occasionally touched it, perhaps that initiated a crack ?
Shimano decided not to replace the crankarm since it is older than the 3 yrs. they warranty Dura-Ace
parts for. I didn't pursue the matter further with them (also my frame is dented where the crankarm
struck - I didn't pursue this either).
I can take some better pictures if someone wants a closer look at the damage.
-Amit Ghosh