Wanderer

I have oneon my Sirrus, a compact double, 34t, but it won't fit on my Crosstrail triple, 26t. Too close to the bottom bracket. Yes, I have dropped the chain in very bumpy areas. Darn it!

bbattle

Andy Schleck found it to be pretty harsh when he dropped a chain.

loimpact

Sigh....still breaks my heart to this day. Friggin' Contadork!!

Anywho.....another situation I've found not necessitating a catcher is on my Ultegra 6800, they've changed the trim feature to where the hop from large chaingring to small, keeps the chain on the outboard trim position first and then another click brings it inboard a smidge.

I can't imagine needing one for Ultegra 6800 and I'd assume the same applies for 105 5800 and DuraAce 9000 and perhaps others will follow suit, but definitely a smart move by Shimano.

BoSoxYacht

Please remind everyone what components he was using when it happened.

rpenmanparker 

You're tenacious!

Come on. Chain dropping has been around a lot longer than SRAM.

BoSoxYacht

Sure, but not everyone has problems with chain drop. If you have problems with it, a chain-catcher is a great idea. Me, I've never had any chain dropping issues, so I don't see myself ever using one.

velocity

I have a 2005 Six13 that has 6700 and that is the concern since its the original 3 tube carbon front triangle. I also have '13 Red groupo on the EVO which came with one as a braze on. Have not had the problem of chain drop -but like that it is there. (Could it be because its there?) I found that there is a trimming feature that is built into the profile of the Red front derailure that is supposed to stop chain noise do to the cross chaining gear selection. So no triming click like the Shimano does. History says that I have dropped a chain before on a Shimano. So I am going to go the way of safer than sorry. I am going K edge and keep the money in the states. Thanks for the feed back.
Got yur wheel
Velocity

MikeWMass

I use Shimano, dropped the chain once, bought this Third Eye Chain Watcher (021850000100) at CambriaBike.com now I don't worry. It is cheap, light, reliable and inconspicuous (at least on my bike). The dork disk comparison does not seem valid to me; the chain is much more closely controlled at the back, and there should not be a problem unless the adjustment is wrong or you catch something in the chain that gets pulled into the derailleur.

BoSoxYacht

It's ok if you don't think it's valid, but ask a few mechanics which one they see more often. I have seen far more rear wheels/rear derailleurs/frames thrashed due to poor adjustment or bent hangers than frames damaged from a dropped chain.

Jed19

I once saw the damage that could result from a dropped chain on a carbon frame. It wasn't pretty. The guy it happened to looked like he was about to cry. I have one on each of my three bikes. And to think all that grief could have been avoided with a $10 Dog Fang purchase.

Cheap, cheap insurance!

catonec 

Heres mine. $12 on ebay.

kingfishr

Some people, the really wild and crazy , living on the ragged edge types make it a point of laughing in the face of danger, and go without. I on the other hand have one on each of my bikes including the steel frames. But maybe I am doing something wrong, even after 15 years of 5000 miles per year my bikes still look like new. Makes it tough to find an excuse to buy a new bike...

rpenmanparker 

You are suffering from a rare but still quite well known mystical disorder, productus preservatus infinitus, I have a friend with the same malady. It is almost like the situation in The Picture of Dorian Grey". No one knows how folks like you can keep goods new looking that are known to rapidly deteriorate in the hands of normal people. Personally I suspect witchcraft, but I have always been that kind of guy. If you go up into your attic, you will find pictures of each of your bikes with you riding them that show their (and your) true condition, and trust me, it ain't pretty. You had better not crash one of those bikes, because if you do the spell will be broken, it and you both will immediately revert to your true state of decomposition.

Either that or you need to get a life outside of bike maintenance.

rpenmanparker 

Do I understand correctly that a braze-on front derailleur attached with an adapter clamp (so a two-piece clamp-on setup) is compatible with chain catchers made for braze-on front derailleur setups? The adapter clamp is essentially interchangeable with the braze-on fitting? Thanks anyone.

kingfishr

Maybe that's part of the problem, photography is my other hobby, and you always have to be ready for a photograph...

bbattle

Technical Q&A with Lennard Zinn: Why did Schleck's chain come off? - VeloNews.com

"...I propose that the reason this happened is unique to SRAM rear derailleurs.
Read more at https://velonews.competitor.com/2010/...D8Y8cH343KT.99 ...."

rpenmanparker 

Very nice stuff. I dabble in photography too, going back to the darkroom-in-the-spare-bathroom days. Just love my 13x19" photo printer. Good work there.

BoSoxYacht

so what's you're point?

One thing the article does point out as fact is that Schleck was using a chain catcher when he famously dropped his chain.

canam73

He posted an article that agreed with you.

Wtf is the matter with you?

BoSoxYacht

I know what the article says, but bbattle never said that he agreed with me, or Zinn's article. I asked him what his point is, not you.

WTF is the matter with you?

canam73

The is the PM function for private conversations. Otherwise you should refresh yourself with the definition of "forum".

BoSoxYacht

Thanks for your opinion. I'll be sure to keep that in mind.

bt

perhaps he shifted in the wrong part of the stroke.....

rpenmanparker 

Bump! Would someone comment about this please?

kingfishr

Since the chain catcher is attached via the screw that fastens the derailleur it seems like it should work. The other option is a clamp on chain catcher...