Jarrett2

I've a 2014 Roubaix I bought in August 2014, about 10 months ago.

During the test ride, the chain dropped inside the small chain ring and chewed up the frame a little. The LBS adjusted the FD and said all was good. In the first month of riding it, it did the same thing again. Chewing up the frame a little more in that area again. I took it back to the LBS and they went through and replaced all the cabling saying it was bad from Specialized.

All was good for a while, then a couple of months ago, it dropped inside like that again during a ride. Chewing up the frame there a little more.

On this morning's ride, it happened yet again. It really got wedged in there this time and I wasn't sure if I was going to be getting it out.

In every case, I'm typically going up a hill when it happens. No other bike I've owned/ridden has done this.

I'm wondering at this point, if the areas where the chain eats into the carbon fiber has done some serious damage and if the frame can possibly be warrantied for that?

Has anyone heard of anything like that before?

Smokehouse

This is slightly off topic...kinda...but can you describe the gearing combo when doing this?

Are you already on the small ring? Are you making a transition from big to small up front? If you are on small up front, are you cross-chaining either way (all the way in our out on the rear cassette)?

All of that aside, I would definitely try to make a claim through your LBS with Specialized and see what happens...what's the worse that can happen? A swift "NO!"? I'd say go for it...no one want an expensive chewed up frame...especially not a brand new one.

datlas 

Doesn't the frame have a silver/metallic chain protector between the small chainring and chain stay to prevent damage??

therhodeo

SRAM'd

Smokehouse

My Tarmac does...and it's now pretty chewed up. Even with a K-Edge chain guard...I still managed to drop a chain big time on a foolish high speed downhill/uphill shift. Shifted from big ring to small ring without first pulling off of the 12 gear in the rear. POP! Crackle! Dropped that fella right quick and jammed it up nicely. Took some time getting it unstuck and it ate up the guard plate pretty well.

Oh well...that's what it is there for I guess.

rpenmanparker 

What do you think?

rpenmanparker 

Doesn't sound like it was installed properly. It is supposed to be so close to the ring that the chain simply cannot escape.

Smokehouse

It may be a problem with my crank and/or rings (running a 110 mid compact set). When I installed the K-edge, I can only get it so close to the inner chainring before it hits the bolts holding the crankset together (they're dome-top on the inside, not flush). This leaves a gap when the bolt and catcher are not in perfect alignment (during the rotation of the crank). With a bit of spinning, it's possible to suck the chain down around it, basically.

datlas 

I think it should, which would have solved the problem in the first place. What do YOU think??

Elvo

Use a chain catcher or adjust your limit screws properly

Jarrett2

Yep, its always when coming from the big to the little ring in front.

It does. It's all chewed up. Plus other areas where there are not protectors inside the chainrings.

seymour1910

Smokehouse

Like others have said...it may be the derailleur throw-limit causing the issue...if it does it all of the time. If not...make sure you aren't cross chained when you do this swap (big front + small rear and then shift to small front). This is what caused my chain to throw.

therhodeo

What groupset is it?

Jarrett2

105 - FSA crank

therhodeo

With an FSA crank like that you may look into a chain catcher.

Ridelots24

No.....

dtrain

...and a little touch-up paint. Spesh and the LBS will likely just point fingers at each other, but I guess you could try. Seems like 'wear and tear' unless you've done structural damage (which I doubt).

RollCNY

OP, you may already be doing this, but if you are planning to shift big to small ring while in a hill climb, do it while you are still mid-cassette. If you wait to be big-big before the dump, you increase your chances for the chain going off the inside. At least in my experience.

roadwarrior

He's riding Shimano 105. But nice try.

roadwarrior

Well, it's not a manufacturer's defect per se, but the shop injected themselves into the process by making that statement. If it a cosmetic issue that was a defect, like the paint chipped on its own that's one thing. But chain dropping is generally not going to fit the bill.

However, that statement pretty much puts the shop at the forefront to talk to Specialized about it. How far you get here...who knows?

Someone mentioned this...you might look into a dog tooth to help. Simple installation. I have one on my cross bike.

GlennR

D'oh

therhodeo

FSA crank isn't doesn't make it much of a different situation.

Jed19

OP, the very first mistake was buying a bike that "dropped the chain and chewed up the frame a little" on a test-ride. Now with that out of the way, have your LBS try to work with Specialized to see what they can do. My hunch is that it is the LBS that screwed up the installation and/or positioning of the chain catcher. I have been using them on all my bikes for a long time, and they have to be installed in a way that the chain won't have anywhere to go if it drops.

Good luck!

trailflow1

NO way will spesh warranty it. Its not their fault. It's your responsibility to adjust the FD properly. A chain catcher is extra added security but the chain can still get past them. The Sram 22 yaw derailleur is one of the worst for it as the downshift is ferocious. Those FD's come with a chain catcher. Most frames do not have enough frame protection for when this happens. Those metal plates are next to useless in most cases. You could try applying some helicopter tape around the area incase it happens again. Make sure your FD is adjusted as close to the chain as possible without rub when in the front small ring and largest back cog so it doesn't over shift and drop the chain.