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Rear derailleur snapped off (pics)

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Rear derailleur snapped off (pics)

Old 10-25-07, 04:12 AM
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pm63
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Rear derailleur snapped off (pics)

This is just great. School break starts, so lots of cycling is to be done. I take my bike out of the shed, start pedalling and suddenly *snap*, something breaks and my chain slips off, leaving me pedalling and not getting anywhere. I get off my bike, only to see my rear der. just hanging there.

The bike itself is a 200 piece of **** I bought when I didn't know better. The derailleur is a SRAM SX4.



The metal plate that attached the der to my frame has just snapped in half.



This pic illustrates best what has happened:



This is quite strange, because despite the low-endness of a SRAM SX4, its strange for a der. to just snap off after a few pedal strokes along flat asphalt.

I don't know what I'll do now. If I had the money I would buy a new bike faster than you can say "XTR" but I don't, so I'll have to just repair this one. If I can obtain the metal attachment plate as a spare part then that would be great, becaust the der. itself is not faulty, and apart from this has served me well. If I can't get the part then I will just get a new rear der., maybe LX or X7 level. What do you guys think?
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Old 10-25-07, 04:34 AM
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tarmenel
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Thats what its there for. You can replace it just need to find the correct manufacturer because they differ from each other. Shouldn't cost more than a can of soup.
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Old 10-25-07, 04:44 AM
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blue_neon
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Yep, that metal plate that just snapped in half is the hanger (its in their to protect the deraillure) Its designed to be bent, snapped and twisted like whats happened to yours.

The good news is it can be replaced for about $10 (or less!). I guess just take your bike down to the nearest bike shop and get them to fit a new one on....or you couldn't probably even do it yourself, just need a 5mm Allen Key.

.

Last edited by blue_neon; 10-25-07 at 04:50 AM.
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Old 10-25-07, 05:22 AM
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What model bike is it?
Mine are 50 freaking dollars. All for a very low end hardtail.
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Old 10-25-07, 07:26 AM
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Ya, no harm done to your deraileur there, just go down to your LBS and tell them what you need, and what company/model/year it is for.
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Old 10-25-07, 07:37 AM
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See if you can find yours here: http://derailleurhanger.com/
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Old 10-25-07, 08:43 AM
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I've had this happen several times. Especially in muddy races where the mud build up and the spokes can grab the der. and rip it off. I've bent them many times too. $20 and you are on your way again.
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Old 10-25-07, 12:39 PM
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Before it snapped, had you noticed any sloppiness in the shifting or even the derailleur throwing the chain into the spokes when shifting into the lowest (biggest) cog? Maybe the derailleur got knocked one too many times, weakening the hanger, which made it bound to snap given enough stress.

I doubt it had anything to do with the "low-endness" of the rear derailleur. No need to buy a whole new bike for a little repair. If you do want to buy a new bike, you should probably replace the hanger anyway to increase its value (the diference will probably be aboove the replacement cost).
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Old 10-25-07, 12:44 PM
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yeah, happened to me when i fell on my head practicing on a dh course. just buy a new one. it cost me $25.
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Old 10-26-07, 06:49 AM
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Ahh fantastic. Should easily be replaced. I'll take it back and get a new hanger Thanks everyone.

Originally Posted by JiveTurkey View Post
Before it snapped, had you noticed any sloppiness in the shifting or even the derailleur throwing the chain into the spokes when shifting into the lowest (biggest) cog? Maybe the derailleur got knocked one too many times, weakening the hanger, which made it bound to snap given enough stress.

I doubt it had anything to do with the "low-endness" of the rear derailleur. No need to buy a whole new bike for a little repair. If you do want to buy a new bike, you should probably replace the hanger anyway to increase its value (the diference will probably be aboove the replacement cost).
Nope, can't say there was anything sloppy about the derailleur before it broke off. Just completely spontaneous.
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Old 10-26-07, 09:51 AM
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Originally Posted by scelia View Post
See if you can find yours here: http://derailleurhanger.com/
Thanks for the link, found one for my bike there.
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