fairly deep scratch what to do

[drumpayne]

I only just got my new Quantum 3 and rode it twice. On the way home i was riding and changed down from the big cog at the front and chain came off. I was on a realy skinny strech of road and i panicked and tryed to unclip my feet but i ened up pushing the crank around and the chain got pushed right up between the frame and the cogs.

I finally got off the bike and i found a nasty scratch that from my limited knowledge looks like it goes right down to the carbon.

I just dont know what to do.

ive got a few pics, but im a new member and i am not allowed to post yet. If someone else could post them that would be great. Email me on markpayne@netcall.com.au if you could help put the pics up. Thanks

Any Advice?

[damhooligan]

It's hard to see, but this is the picture.

[Richard.L]

First off: if you have the time go to the LBS and show them the scratch and see what they say.

ouch is it really that deep? or is the pic just making it look worse?

[ScottyL]

.... wow

Ouch that'll hurt in the mornin....

Sorry to hear about your misfortune...

[drumpayne]

Thanks for putting the pic up.

Um... It doesn't actually puncture or scratch the carbon. But there could be a slight dint in the carbon.

The picture makes it look a bit worse.

I have taken it down to the bike shop and they have got it till the mechanic comes in tomorrow to have a better look. The sales guy said he didn't think it looked too bad but he said he has not too much idea about that stuff.

Because its a 2010model hopefully they'll be able to get a hold of some same colour paint easy enough. I just hope it isn't screwed. Id be so dirty at myself.

[wombatK]

Id be so dirty at myself.

So had you been fiddling with the derailleur adjustment limit screws ?

The chain should not fall off like this on a properly adjusted derailleur.

Ordinarily, the adjustment would be the responsibility of the LBS selling you the bike. And it should be their responsibility and cost to make good the damage resulting from it's maladjustment that you didn't cause.

Cheers

[drumpayne]

I wouldnt even know what a derailer limit screw is.

I had only had the bike two days and as far as i knew it had been fully set up new before i bought it.

But somehow i dont think that the bike shop would be up for that.

[Mulger bill]

There's two philips head screws on top of the mech, they prevent the derailleur moving too far in either direction when set up correctly.

Shaun

[Old and Rusty]

I wouldnt even know what a derailer limit screw is.

I had only had the bike two days and as far as i knew it had been fully set up new before i bought it.

But somehow i dont think that the bike shop would be up for that.

As a matter of Duty of Care and I would think a requirement of their liability insurance they would do a pre-delivery check of the bike even if it was factory assembled. I would ask the bike shop the question as to why the chain would drop with a correctly adjusted derailer and who is responsible. A carbon bike isn't cheap and you have every right to expect it to be correctly assembled and adjusted when you picked it up.
I would think Fair Trading would see it that way too.

[wombatK]

I wouldnt even know what a derailer limit screw is.

I suspected as much !

I had only had the bike two days and as far as i knew it had been fully set up new before i bought it.

But somehow i dont think that the bike shop would be up for that.

On what you've told us, it was not adjusted correctly and your State's Dept of Fair Trading will back you if it should come to that. A bike with maladjusted derailleurs is not fit for the purpose you bought it for, and is not fit for sale. In NSW you would be entitled to a replacement frame (not just a repaired frame).

Ask the question OldnRustry suggests, and be wary of any filibustering like blaming misoperation or user abuse. Hopefully, you will not have any such trouble.

If you put your location (suburb, state) in your user profile, forumites from the relevant state can give you more specific advice.

Cheers

[toolonglegs]

I have chains drop off the inner ring sometimes...it happens even with everything perfectly adjusted.
Thats why so many people run those little chain catcher thingies these days...even on bikes set up by 100 year old Belg mechanics.

[Mulger bill]

My 'Dale has an thin alloy plate bonded to the chainstay for just that reason...

[drumpayne]

thanks for all the advice. Very helpful. I am most likely going to hear from the guys at the shop today. I was working all day yesterday and my little brother took it down to the shop for me, and i think they were already trying to pull that it was my fault that the chain had come off for some reason like being in the wrong gear on the back.

Will keep the thread updated when i find out whats happening when they call me back.

[jacks1071]

thanks for all the advice. Very helpful. I am most likely going to hear from the guys at the shop today. I was working all day yesterday and my little brother took it down to the shop for me, and i think they were already trying to pull that it was my fault that the chain had come off for some reason like being in the wrong gear on the back.

Will keep the thread updated when i find out whats happening when they call me back.

Seal it up with some clear nail polish and maybe put a lizard skin chain cover over it. You can drop the chain even when FD is properly adjusted. Get the shop to check it but I doubt you've cracked the frame - you've just taken a good chip out of the paint I would say (cosmetic).

[MiG]

My 'Dale has an thin alloy plate bonded to the chainstay for just that reason...

As an engineer and a tightarse I am very impressed by that. Far too many products are poorly designed with no consideration of real world usage and damage tolerance.

[Missy24]

My 'Dale has an thin alloy plate bonded to the chainstay for just that reason...

As an engineer and a tightarse I am very impressed by that. Far too many products are poorly designed with no consideration of real world usage and damage tolerance.

Um it aint bonded (bonded would insinuate more than glue right), I would say its stuck till it comes off... trust me, I got the Cannondale up from Shaun and mine came off, its glued.

[Mulger bill]

Ahhh OK, mine looked pretty solid when I had the cranks out last Friday.

Live and learn...

Shaun

[MiG]

Um it aint bonded (bonded would insinuate more than glue right), I would say its stuck till it comes off... trust me, I got the Cannondale up from Shaun and mine came off, its glued.

Bonding somewhat implies a high quality glue job capable of taking stress but it is basically gluing, so yes and no.

[Missy24]

Um it aint bonded (bonded would insinuate more than glue right), I would say its stuck till it comes off... trust me, I got the Cannondale up from Shaun and mine came off, its glued.

Bonding somewhat implies a high quality glue job capable of taking stress but it is basically gluing, so yes and no.

cool, good to know

[Old and Rusty]

Polyurethane is great for bonding, Sika have some excellent products for bonding just about anything starting with truck and bus bodies. If the plate jumps off then Sikaflex is a good option to put it back on permanently.

[drumpayne]

Hi all,

talked to the guys at the shop and they are somehow working out getting a new frame off avanti because it looks like the frame has another manufacturing problem that was going to cause issues in the near future.

Im stoked.

But ill wait to see if it all happens...