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Discussion Starter · #1 ·
so i was going up a little uphill and and all of the sudden my rear wheel locks up.

when i looked back, my rear derailleur is on my spokes of the wheels. :mad:

checked it more and saw the chain link came of one post and this caused the lock up on the chain in the bottom ring on the derailleur.

damage:

tiagra rear derailleur
the hanger
chain :mad5:
and maybe some spokes

:(
 

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Baltic Scum
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Sounds like it might be time to a. start using the 6 month free tune up from the shop and b. stop shifting under load?
 

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And get a spoke-protector, if you don't have one already. Your local bike-shop should have those for cheap.
 

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I feel your pain. :(

Back in the days I was still riding a freewheel, I broke my rear axle by pounding the pedals standing up on an extremely short but uber-steep section of road. The wheel immediately started kissing the stays, stopped me on a dime.

Still, nothing went into the wheels, and nothing ended up getting hurt other than the axle (well, maybe the skewer got bent), so you definitely outdo me there.
.
 

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Well at least it's an excuse to upgrade your rear dr.
 

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road bike resurrector
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jd3 said:
Well at least it's an excuse to upgrade your rear dr.
+1

I remember doing a wheelie on one of my custom builds and snapping the chain with the front wheel still in the air. one of 9 lives lost that day.
 

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seeborough said:
Sounds like it might be time to a. start using the 6 month free tune up from the shop and b. stop shifting under load?


how do you know he/she was shifting under load?
 

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Been there done that.

At least in my case it was "only" spokes, but several were cut as clean as I could do with wire cutters.

I had changed from a 11-23 to a 11-27 for an event and didn't bother to check the limit screws. But at least I took a test ride, had the problem, and was able to ride the event on another wheel.
 

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FatTireFred said:
how do you know he/she was shifting under load?
A combination of maladjusted equipment and user error while riding uphill seem like reasonable assumptions.

Even Shimano products don't break while "JRA'.
 

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Discussion Starter · #10 ·
thanks for the info peeps.

it just sucks this has to happen early when the temperature just turned good.
 

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Careful reading.

seeborough said:
A combination of maladjusted equipment and user error while riding uphill seem like reasonable assumptions.

Even Shimano products don't break while "JRA'.
Not sure if a sideplate coming off the chain rivet and jamming into the derailleur cage could be blamed on "maladjusted equipment and user error." This happens, and often with the exact consequences the OP described.
 

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panget said:
thanks for the info peeps.

it just sucks this has to happen early when the temperature just turned good.
If it's any consolation, I ran over a branch on my MTB, it flipped up in what can only be described as a once in a lifetime shot and jammed my derailleur into the spokes...

Trashed derailleur, busted wheel.
 

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Baltic Scum
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checked it more and saw the chain link came of one post and this caused the lock up on the chain in the bottom ring on the derailleur.

I'm really not sure which one of us is jumping to conclusions.:confused:
 

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seeborough said:
checked it more and saw the chain link came of one post and this caused the lock up on the chain in the bottom ring on the derailleur.

I'm really not sure which one of us is jumping to conclusions.:confused:
Well, if I would wrap my derailleur into my spokes and then find the chain with an off-rivet chain sideplate jammed into my derailleur cage, I would also conclude that the sideplate came loose first, the jam happend second and the rest of the mayhem occured third. It's just highly unlikely for something on a bike to rip a chain sideplate off its rivet.
 

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Discussion Starter · #16 ·
yes it could be worst but for me, $500 was alot of money for a bike and now i have to spend more to get replacement parts and get some tools. :(

and yes, i know most of you guys have like $1k plus bikes.
 

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Discussion Starter · #17 ·
so i bought an ultegra gs rear derailleur. now i need to buy a chain but im looking for a reliable one that will work with three gears up front and 9 gears in the back.

i searched for the model (KMC Z9000) that came with my bike and saw someone that went through the same problem as i did when the link came off and locked the rear derailleur and dragged it up.

any suggestion for a new chain?
 

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panget said:
so i bought an ultegra gs rear derailleur. now i need to buy a chain but im looking for a reliable one that will work with three gears up front and 9 gears in the back.

i searched for the model (KMC Z9000) that came with my bike and saw someone that went through the same problem as i did when the link came off and locked the rear derailleur and dragged it up.

any suggestion for a new chain?
I use SRAM chains and have never had a problem. They have a master link that is very easy to use once you get the hang of it. I've also used Shimano chains and they are just fine too. I prefer SRAM but can't say I've ever noticed a functional difference.
 

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panget said:
yes it could be worst but for me, $500 was alot of money for a bike and now i have to spend more to get replacement parts and get some tools. :(

and yes, i know most of you guys have like $1k plus bikes.
Sorry for your bad day.

I remember what it was like to pay $800 for a bike and think it was a lot...at the time it was. And now that I'm back in school, I'm poor again, so costly repairs to my bike still hurt.
That Ultegra der will serve you well.

Here's hoping you're back on the road again real soon.
 
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