NFields

So I did it today...somehow managed to lose the chain. Off of a properly set up front der that limited this event from happening. So, as bonehead mistake #2, I rerrailed while riding only to find a bent chain link. Stop, assess, remove chain, call for ride home. I get home, apply new chain, look closely and find two slivers missing from the chainstay. Next question...I am not the original frame owner and warranty doesn't apply to my mistakes anyway. Who out here in this world can repair my bike damage?

Thanks,
NFields

doco

check the Calfee(Calphee?) website, if it's fixable, they will be able to do it

humble_biker

how deep are the gouges? It is probably no big deal.

NFields

2 gouges about a dimed size each, and at least 3 layers are visible in depth. It appears something metallic underneath these layers are visible. I wonder if Specialized uses a metal BB undercarriage on the Tarmac's beneath the carbon fiber?

Thanks,
NFields

kmart

I took a Specialized Roubaix for a test ride last week at a LBS and noticed that it had a plastic hook thing clamped under the front der, sticking out towards the smallest chainring. Looks like it was meant to catch the chain if it ever flew off. Nifty.

humble_biker

That is an anti-chain suck device. Designed to keep your chain from becoming wedged between inner ring and stay. (Forgive my memory but I think it is either a Gary Fisher or Tom Ritchey idea).
NFields: I would bet the carbon is wrapped around an alloy lug the has two protuberances for the chain stays. The only production frame I know of off hand that has no lugs in it is the Scott Addict.
Take it to get it checked out but it is fine I bet.

jimmythefly

Not to be too picky, but I'd like to clarify:
The specialized thingy is what I've seen called a chain watcher, or Deda makes one called a dog fang. It is not an anti-chainsuck device. What it does is keep you from dropping the chain towards the frame and having it wedge betweed seat tube and small chainring.

Chain suck happens when as you pedal forward, the chain near the bottom of your chainrings is pulled upwards (rather than running free towards the rear derailleur), then it gets wedged into the 'ring/frame area, or sometimes gets wedged against the backside of your front derailleur. Chainsuck can be caused by a dropped chain, but can also be caused by extreme mud, bent chainring teeth, chain wedged between two 'rings, and other conditions. A chain watcher does not necessarily prevent this, though it can help. An anti-chainsuck device is mounted under the BB/chainstay area, and sits right next to the chainrings to deflect any stuck chain from travelling with the chainring up and into trouble.

humble_biker

my bad. I see now he says under the front derailleur not under chain stay...

NFields

Humble. I went to the LBS to have the chainstay inspected and they swear that Specialized does not use any metal for support in the BB and chainstay areas. I for one do not know either. Those in the know advised the damage was not in the structural area as being on the side instead of the load carrying area on top/bottom. They advised to "keep an eye on it and don't be afraid to ride it". hmmmm, Craig Calfee quoted $115 for repair and 10 day turn-around. I'll probably go that route. I do feel better knowing it can be repaired now.

Thanks,
NFields

humble_biker

That's good news either way. I bet you forget it's even there in about three rides.