[massiveattack]

Just wondering if any of the more expereinced riders can help me isolate a problem that I just noticed on bike today, after a ride.

The gear and chain started making scratching sounds towards the end of the loop. And I was wondering if the sprokets or 'shifter' may have either bent or moved slightly off line.

I flipped the bike and took a closer look and didnt see anything that was apparent.


Anyone else with a 04 that had this problem?



Any ideas - before I take it into a shop to check out.


Thanks in Advance!

 

[mward]

You're going to have to be a bit more descriptive than that.

 

[skink]

My specialised P2 started making scratchy/grindy noises, and turns out the front derailluer was rubbing on the chain. Even my lbs just gave up on it, and told me to deal with the noise.

 

[RiDE]

My specialised P2 started making scratchy/grindy noises, and turns out the front derailluer was rubbing on the chain. Even my lbs just gave up on it, and told me to deal with the noise.

They didn't bother adjusting the limit screws?

 

[skink]

I sat there and watched the owner play with it for a half an our, going up and down through the gears, trying to get it to stop. Didn't work, and he finally gave up. I don't blame him!


-skink

 

[TheSherpa]

I sat there and watched the owner play with it for a half an our, going up and down through the gears, trying to get it to stop. Didn't work, and he finally gave up. I don't blame him!

-skink

Sounds like you need a new LBS.

-TS

 

[skink]

Sounds like you need a new LBS.

-TS

My long-time boyfriend works there, and I know all the guys- Guess I'm stuck....

 

[TheSherpa]

My long-time boyfriend works there, and I know all the guys- Guess I'm stuck....

If you fly me out to Santa Cruz i'll come fix it for free. Your LBS is doing something wrong because if they tinkered enough it wouldnt always rub.

-TS

 

[beeristasty]

It sounds like cable stretch

It is a new bike, right? Cable stretch happens.

A simple twist of the barrel adjusters should do it. If that doesn't do it then there is probably too much slack in your cable. Also check your derailleur's anchor bolt to make sure your shifter cable hasn't crept through.

 

[pimpbot]

Cable Stretch....

It is a new bike, right? Cable stretch happens.

A simple twist of the barrel adjusters should do it. If that doesn't do it then there is probably too much slack in your cable. Also check your derailleur's anchor bolt to make sure your shifter cable hasn't crept through.

... isn't terribly accurate. It's more like the cable housing 'settled' and compacted a bit. Just like chain strech isn't the plates getting longer, it's the pins wearing out into a football shaped profile.

Yeah, get a new LBS if they can't figure this out. This should be an every day occurrance, that is, unless this is caused by pivot point slop throwing something out of alignment.

 

[beeristasty]

I could be wrong, but

cable housing shouldn't "shrink" per se. All the cables I've seen are braided. So over time, if you pull on both ends of a braided cable it will tighten like a knot, creating slack that wasn't there before.

I do agree that if a bike shop's owner can't find or fix the problem, you should find another bike shop. There really isn't anything complicated about finding what is wrong with something so mechanically simple.

So unless you clipped your derailleur on something while riding or wrecking, it is LBS shopping time. Or you could learn how to wrench yourself. Save money and time on tune-ups and upgrades by DIY. As they say, there's no time like the present.