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Carbon detonaton

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Old 01-01-09, 10:44 AM
  #1  
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Carbon detonaton

my derailer cage....

Just sayin'
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Old 01-01-09, 10:46 AM
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Derailleur cages are only warrantied to 1,000,000 feet of vertical. After that even the alloy ones explode!
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Old 01-01-09, 10:49 AM
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What do you mean by "detonation"?

(And please folks -- spare me the atomic bom pics.)
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Old 01-01-09, 10:52 AM
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Serves you right for riding Campy. Wait, doesn't that new DA 7900 have a CF rear derailleur cage too?
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Old 01-01-09, 11:07 AM
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I'm not sure what happened. On phone getting ride home. Will do postmortem when I get home
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Old 01-01-09, 11:08 AM
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I have red old man
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Old 01-01-09, 11:16 AM
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Originally Posted by umd
I have red old man
There you go.
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Old 01-01-09, 11:17 AM
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Originally Posted by umd
I have red old man
When this occurred, did you exclaim 'God Sram It!'?
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Old 01-01-09, 11:20 AM
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Originally Posted by umd
I have red old man
Shoulda stuck to rival

Did something get caught in your RD or did you have a stiff link in your chain?

These could have done something. Hopefully you'll have a successful postmortem at home!
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Old 01-01-09, 11:24 AM
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Wait a second- your cage exploded, you're on the phone getting a ride home, and you thought you'd log onto BF to chat about it? Did you pick up some Juju Fruit first?
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Old 01-01-09, 11:25 AM
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Stop calling me 'old man' dammit.
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Old 01-01-09, 11:26 AM
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Originally Posted by ninjaman
Wait a second- your cage exploded, you're on the phone getting a ride home, and you thought you'd log onto BF to chat about it? Did you pick up some Juju Fruit first?
Juju fruit? I posted to BF while I was waiting for my ride. Thanks jmechy for picking me up
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Old 01-01-09, 11:27 AM
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Originally Posted by ninjaman
Wait a second- your cage exploded, you're on the phone getting a ride home, and you thought you'd log onto BF to chat about it? Did you pick up some Juju Fruit first?
"These pretzels are making me thirsty"
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Old 01-01-09, 11:29 AM
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Oh, it's from an old Seinfeld episode- Elaine's boyfriend has an accident and ends up in the hospital, she stops for Juju Fruit on the way to the hospital.
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Old 01-01-09, 11:29 AM
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Juju fruit! That sucks your cage exploded.. pics later yes?
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Old 01-01-09, 11:31 AM
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Is your chain alright? It seems th few times I've left home without a chaintool are the only times I've ever needed one on the road.
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Old 01-01-09, 11:39 AM
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Old 01-01-09, 11:51 AM
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Originally Posted by umd
Sweet mother of God is that a dirty chain.

Even my MTB chain isn't that dirty, and I ride it on pea gravel rails-to-trails paths, and cinder covered roads.

Not saying this would have prevented it, but take your bike to the local Do It Yourself car wash, stand above and behind your bike, and powerwash (with hot water) your cassette and chain.
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Old 01-01-09, 11:57 AM
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Nice gloves. I've got those, too.

Dunno what to say about your RD.
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Old 01-01-09, 12:01 PM
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Originally Posted by Duke of Kent
Sweet mother of God is that a dirty chain.

Even my MTB chain isn't that dirty, and I ride it on pea gravel rails-to-trails paths, and cinder covered roads.

Not saying this would have prevented it, but take your bike to the local Do It Yourself car wash, stand above and behind your bike, and powerwash (with hot water) your cassette and chain.
I just cleaned it the over the weekend, but between 120 miles yesterday and 15 miles on wet roads today, it gets dirty fast.
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Old 01-01-09, 12:11 PM
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I don't know the order of events and what caused this yet, but these are the facts as I know them:

1) The cage is broken in half
2) The rod that holds the cage onto the parallelogram is broken
3) The spring in the parallelogram is broken
4) The hanger is bent
5) Some spokes are bent
6) the chain has no kinks and all links rotate freely
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Old 01-01-09, 12:13 PM
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Originally Posted by umd
I just cleaned it the over the weekend, but between 120 miles yesterday and 15 miles on wet roads today, it gets dirty fast.
Sorry to veer off topic, but perhaps you should try a different chain lube -- I'd suggest this:

https://www.rocklube.com/products_detail_gold.html
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Old 01-01-09, 12:14 PM
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You know, you may be one of the only riders outside of the pro peloton that has put that many miles on a sram RD. Your RD may have seen more miles than the vast majority of those ever made.
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Old 01-01-09, 12:16 PM
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2009 is gonna be a rough year for you.
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Old 01-01-09, 12:39 PM
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Sounds like something got caught up in it. Especially if you weren't shifting at the time. If not then something on the derail broke/let go causing the cage to move into the wheel causing the broken cage, bent spokes, bent hanger, etc.
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