broken derailleur hanger - 2011 crux

Replies to This Discussion

Permalink Reply by david taylor on October 22, 2013 at 2:26am

glad you posted, mine broke this weekend too! and it is a 2011 crux.

now i am 155 lbs, a middling cat 4 58 year old.  i am not powerful , why would the hanger break after 5 races and a few practice rides? no twigs or mud buildup.

now i have to rebuild my trashed derailleur and have a nice gouge in my frame.

are we talking defective parts?

• ▶ Reply

Permalink Reply by Seth Waite on October 22, 2013 at 3:44am

As frustrating as this is, my sense is no we are not talking defective parts.  Talking to people on the field the general thought was - better to break a removable hanger than bend / break a drop out.  But what do I know?  This was my 3 or 4th race ever, and (silly me) the maiden voyage of my crux.  I was asking for trouble with a mismatched (old/new) drive train.  which for the record was - campy 9 speed ergo shifters to campy derail - to sram 9 speed cassette and chain.

Really -- I suspect my cage was too tight to pass any debris and my jockey wheels were ancient.  It shifted pretty well .

Gotta rebuild.

• ▶ Reply

Permalink Reply by david taylor on October 22, 2013 at 5:09am

Ok
I'll back down....
Still would like to know what happened, I couldn't find much info about the mechanism by which the hanger breaks but no doubt better than broken chain stay.

Dave

• ▶ Reply

Permalink Reply by Craig MacIntyre on October 22, 2013 at 6:40pm

Think collar bone.  Designed to break so your ribs and back don't.  If the impact didn't break the collar bone you chance having your ribs driven through your lungs ... ick

While designed to break they shouldn't just break.  The thinking behind the hangers were designed this way as bike moved away from steel because you cannot cold set aluminum or carbon.  It has become standard now.

Just make sure that when you instal the new one you have the alignment checked or your shifting will never be right.  Most new bikes are not aligned properly and this contributes to both poor shifting and eventual early fatigue.

• ▶ Reply