ANOTHER broken crank (carbon one this time...)

In article <[email hidden]>, [email hidden] says...

Quoted message said:

Just about everybody's seen broken cranks or pictures of such:

pardo.netFAIL 001.htmlOpen ↗

How about a picture of a broken COLNAGO carbon crank:

serotta.comattachment.phpOpen ↗

&postid=6286

Quoted message said:

When you consider this crank has a list price of something like $950 (its on sale now for only $650
- hurry!), all I can say is OUCH....

It's probably out of warranty too.
--------------
Alex

Alex Rodriguez <[email hidden]> wrote in message news:<[email hidden]>...

Quoted message said:

In article <[email hidden]>, [email hidden] says...

Quoted message said:

Just about everybody's seen broken cranks or pictures of such:

pardo.netFAIL 001.htmlOpen ↗

How about a picture of a broken COLNAGO carbon crank:

serotta.comattachment.phpOpen ↗

&postid=6286

Quoted message said:

When you consider this crank has a list price of something like $950 (its on sale now for only
$650 - hurry!), all I can say is OUCH....

It's probably out of warranty too.
--------------

Actually, it appears that the broken Colnago crank was warrantied, and the guy got his money back
and bought Campy carbon cranks, here the text:

"Refund given, Campy purchased I sent the cranks back to the shop that sold them. They took them to
trialtir which apparently told them they had never seen a failure like this.

I was given the option of a new Colnago crank with a "new design", or a full refund. They did not
explain why a "new design" was necessary if there was no problem being reported with the cranks.

Needless to say, having had a catastrophic failure, I opted to exchange them for Campy Carbon, which
were at the time, equally priced.

I have never heard of a Campy Carbon failure.

The cranks do look like they are a "clamshell" design around a foam core, with superficial layering
to bond the clamshell together.

All in all, not a great design. One wonders how a bike maker like Colnago would accept such a
design, knowing their experience with carbon monocoque frames.

The caveat here is probably stick to cranks made by component manufacturers, and not by frame makers
who puchase other brands and put their sticker on them."

I guess he's never seen these photos:

shimano: atmosp.physics.utoronto.cacrank.htmOpen ↗

campy: campyonly.comretrobike.htmlOpen ↗

FSA: sheldonbrown.comfsabb.htmlOpen ↗

and of course, the "famous" wheelsmith collection:

pardo.netFAIL 001.htmlOpen ↗

as Ric Hjertberg states:

"Campag cranks were the vast majority of failures because they saw the really serious miles. Victims
were sure not to stray from Campag for fear of even worse experiences. The more of their cranks you
broke the more you recommended to others like yourself to use nothing else."