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colnago, carbon Broken crank, picture 2.(9 posts)

colnago, carbon Broken crank, picture 2.MGS
Apr 12, 2003 4:21 PM
The back side of the broken crank.

Anyone seen this with Campy???
how did you do that!the bull
Apr 12, 2003 6:16 PM
What does it have to do with campy?
How much do you way?nmthe bull
Apr 12, 2003 6:18 PM
Weight is 172 and .....MGS
Apr 12, 2003 8:33 PM
I weigh 172 and was climbing hard up a hill, but not so aggressively that a crank should fail.

The reason I asked about Campy is that the Colnago bottom bracket is the only other carbon crank that is Campy compatible. It is made to fit the Campy spindle,using Campy chainrings, and having a configuration to duplicate the Campy system. The question was raised as I need to replace the crank, and have no desire to have this problem twice. So I am considering replacing the crank with a Campy Carbon crank.

Thus, the question, is this a problem inherent in all carbon type cranks, including Campy, or am I just an unlucky SOB and should follow my instincts and stick to Colnago for frames but use major component manufacturers for cranks.
I got a campy carbon crank.the bull
Apr 13, 2003 3:33 AM
Not enough miles to say how it will hold up.I do however like them so far.I describe the ride as "energy wands".How many mile do you think you put on those cranks?I have never seen anything like that.My first thought was "what kind of truck hit you"!After looking at yours I see how there is a seam.Is that some kind of foam or plastic in the inside?
re: colnago, carbon Broken crank, picture 2.divve
Apr 12, 2003 10:23 PM
Looks like there are two halves bonded together? If that's the case, the crank most likely began to become un-bonded around the pedal insert area, leaving twisting forces to do the rest. I'd like to think it was a fluke...but who knows......
re: colnago, carbon Broken crank, picture 2.desmo
Apr 13, 2003 9:43 AM
from the picture it looks like the steel insert that holds the pedal was not bonded well to the inside half of the arm. or the two halfs were just not bonded well together. I could see how that pedal insert would want to pull down and away from the inside half and split it apart.
re: colnago, carbon Broken crank, picture 2.morency
Apr 14, 2003 9:16 AM
you didn't hit the road with your pedal while cornering a while back?
re: colnago, carbon Broken crank, picture 2.NEIL
Apr 14, 2003 9:22 AM
And you paid how much for the cool factor of these cranks?