Serotta Rear Derailleur Bolt

[pjmsj21]

The rear derailleur on my Serotta Concours broke off of the hanger when I had a close encounter with a deer and crashed. The bolt that attaches the RD broke and the hanger appears to be undamaged.

Is there a spec for this bolt and if so any suggestions on where to find one?

TIA

Pat

[Columbus SLX]

Hi pat - what kind of derailleur is it? Post a photo if you’re not sure.
Even if the hanger looks okay it’s probably a little bit out of alignment now. Any bike shop will have the hanger alignment tool to get it back in line.
You’re okay after the crash I hope!

[Peter P.]

That's unusual for the derailleur mounting bolt to break. Is it aluminum?

[oldpotatoe]

The rear derailleur on my Serotta Concours broke off of the hanger when I had a close encounter with a deer and crashed. The bolt that attaches the RD broke and the hanger appears to be undamaged.

Is there a spec for this bolt and if so any suggestions on where to find one?

TIA

Pat

It's a 10by1 threaded bolt but a replacement depends on the rear der type/manufacturer/model..Is it Campag? I have a bunch of these bolts.

[pjmsj21]

Peter,

It will be a Campy rear DR.....not sure of whether it will be Athena or Chorus but will be a 2011-14 vintage.

[pjmsj21]

Hi pat - what kind of derailleur is it? Post a photo if you’re not sure.
Even if the hanger looks okay it’s probably a little bit out of alignment now. Any bike shop will have the hanger alignment tool to get it back in line.
You’re okay after the crash I hope!

Hi...thanks attached a couple of pics of the damaged DR. As to damage to me: fractured pelvis in four locations, a shoulder injury and an ankle that was the size of a grapefruit. Trashed my helmet as well but not its contents.

[oldpotatoe]

Hi...thanks attached a couple of pics of the damaged DR. As to damage to me: fractured pelvis in four locations, a shoulder injury and an ankle that was the size of a grapefruit. Trashed my helmet as well but not its contents.

Sorry, don't have that one..unique with '11s' rear ders...I'll check with Campag, NA..

[m_sasso]

Sound like the bike repair should be the least of your concerns currently, take care of yourself and we hope you heal up quickly.

[parallelfish]

As to damage to me: fractured pelvis in four locations, a shoulder injury and an ankle that was the size of a grapefruit. Trashed my helmet as well but not its contents.

Yikes! Hope you are healing well. Deer are so dangerous! I have had way too many near collisions with these unpredictable creatures.

[pjmsj21]

Sorry, don't have that one..unique with '11s' rear ders...I'll check with Campag, NA..


Peter thanks.....will look forward to hearing what you find out.....the joys of dealing with an older Campy system.

[oldpotatoe]

Peter thanks.....will look forward to hearing what you find out.....the joys of dealing with an older Campy system.

PM sent

[chismog]

Peter thanks.....will look forward to hearing what you find out.....the joys of dealing with an older Campy system.

:eek: I'm still on Campy 10s for most of my bikes! I prob will be as long as the parts are available and not cost prohibitive.... guess I'm personally part of that "older Campy system" now. :rolleyes: