front derailleur chatter

[shouldbeinbed]

<snip> now only chatters when both cog and chain ring at each extreme but won't be doing that anyway when riding. <snip>

IMO you've gone too far silencing it, chatter at the opposite ends (not just extremes) is your chain begging for mercy, becoming more likely to give out under load; your tender parts don't want that to happen; and having its useful life shortened

Cross chain chatter isn't necessarily a bad thing, it is the bikes way of audibly letting you know that you've been concentrating too hard on other things and not the essential good gear discipline riding a double front chainring requires, even when the pedalling feels comfortable.

Consider it a warning alarm, not a nuiscance to be eradicated totally.

 

[bigup]

thanks, i thought any chatter from the chain was not good for it and reduce its life!

the bike went into lbs yesterday, hopefully should be sorted by tomorrow

thanks all for your advise

 

[shouldbeinbed]

thanks, i thought any chatter from the chain was not good for it and reduce its life!

bang on, so don't mask it by generous adjustment, silence it properly by riding in the right gear combo.

 

[Tanis8472]

I took my giant back to the shop as it was dropping the chain and was shown the chatter by the guy resetting the gears . He said it was normal and to give another half a click to move the derailer over . Was he telling me porkies ? It seems to work .

If you mean the chain dropping off the front chainring, then yes, the adjustment should stop it dropping off.
BTW, dont run large/large and small/small together.

 

[bigup]

Well got the bike back today from Rick Greens in Handforth, great turnaround (next day)

went around the block and all seems perfect again

 

[Tanis8472]

God to hear

 

[windolene]

Hi all

I have a giant defy 4 compact. I understand how to position the front derailleur correctly and have got the low limit fine, no rubbing no matter where I am when on the little ring.

Only thing I can't figure - the high limit screw seems to be very loose in the thread when in the little ring, and when I switch out to the big ring and attempt to correct the high limit, the screw obviously has no effect.

So I screwed the high limit right in so its not loose in the thread, and started from scratch - setting the low limit first - but doing this creates such tension I then can't shift into the big ring. So that hasn't sorted it either. Any suggestions?

Cheers

 

[GmanUK65]

By reading the above it tells me that gearing is set up wrong (just got bike yesterday so it has LBS settings). I take it that if I am in the big cog at the front and have loud chain chatter while using the two smallest cogs at the back there is something wrong?

 

[GmanUK65]

I remember about 10 years ago when I had a mountain bike where my rear cassette gears were indexed, and my front derailleur was not indexed so the front derailleur could be tweaked to minimize chain chatter - pity I cannot do this with my road bike