Skipping second biggest rear cog

lotus49

My fairly new Giant Defy 3 has started skipping the second biggest rear cog in both directions. Apart from that, everything else appears to work perfectly.

Can anyone tell me what can cause thsi please?

cycleclinic

Cable tension, chain wear, sprocket wear. It is probably cable tension.

Good guide [url=herehttp://www.parktool.com/blog/repair-help]herehttp://www.parktool.com/blog/repair-help[/url]

lotus49

thecycleclinic wrote:

Cable tension, chain wear, sprocket wear. It is probably cable tension.

Good guide [url=herehttp://www.parktool.com/blog/repair-help]herehttp://www.parktool.com/blog/repair-help[/url]

The bike is very new and I have been careful to clean and lubricate the chain and cassette so it can't be wear. I have only just got back from work so it's a bit late to be fiddling with my cables but I'll have a look at it tomorrow - thanks.

craker

I've had this before and realised later I'd over-adjusted the rear mech by a whole gear, so the easy gear was 2nd and a redundant click in top (barely noticable). Thing is I then adjusted the top stop so that I could get gear 1 and it does give a (slightly rattley) set of gears 1-3-4-5-6-7-8-9-9. Try readjusting the gears from scratch baring this in mind.