Bicycle Mechanics - Skipping Chain

I have an full Ultegra derailler/shifter system on my Cannondale R1000. The bike is brand new. I have ridden it 135 miles. The chain is skipping whenever I put a lot of force into my pedaling. When hill climbing in steep terrain this is a real problem. Does anyone know a way to fix this?

Thanks,

Ron

try lubing the cassette and pulley

Take it back to the shop you bought it at and have them adjust it.
No sense doing-it-yourself if the bike is brand new.

Check for a frozen link-- do this by slowly pedaling the chain through several revolutions and observing it through the idler pulley. Hard shifts can kink or twist the chain so that one or two links won't flex properly. Easily solved with two vice grips.

Dave

Check for a frozen link-- do this by slowly pedaling the chain through several revolutions and observing it through the idler pulley. Hard shifts can kink or twist the chain so that one or two links won't flex properly. Easily solved with two vice grips.

Dave This is the most likely culprit, given the age of the bike.

try lubing the cassette and pulleywrong

I have the same problem. Just put another new chain on. I'll look for the poor flexing link.

Thanks

Hi,

Thanks for all the help. It looks like a bad chain may be the problem. I will check it out and head for LBS. The bike is under warranty for a year and the Ultegra system for two yeas.

Ron

Hi,

Thanks for all the help. It looks like a bad chain may be the problem. I will check it out and head for LBS. The bike is under warranty for a year and the Ultegra system for two yeas.

Ron

It's not necessarily a 'bad' chain, a particularly hard shift is all it takes to kink the chain laterally as it moves up or (more likely) down the cogs. Once you flex it back it's good as new.

Dave

wrong
Well my chain was skipping near the pulley and alittle ProLink on the pulley and a dab on each link solved the problem

Well my chain was skipping near the pulley and alittle ProLink on the pulley and a dab on each link solved the problem
That ain't the same as 'lubing the casette' is it?

Nothing wrong with adding a few drops on the cassette to smooth out the sides.

Hi,

I appreciate the help. I have been checking for a frozen link but I can’t find one. I cleaned everything, I did have sand on the chain from a ride to the New Hampshire coast. I re-lubed with a silicone spray and adjusted the front derailler a little. I took the bike out for a ride and I got a flat. I live on an unpaved road and a rock did in the Hutchinson Reflex tires that came with the bike. I ordered new tires (Vredestein Fortezza Road) and tubes from biketiresdirect.com.

My LBS will be open tomorrow and if I have the time I will take it there for a check. I still want to know how to fix things for myself as the LBS is not always near. I do a lot of riding far from home and need to be able to take care of things myself.

Thanks,

Ron

Nothing wrong with adding a few drops on the cassette to smooth out the sides.Bull.Nothing like creating a dirt magnet.Lube is your friend,but only if you put it in the right place.

Thanks for all the help. I cleaned the chain and derailleurs and checked each link to make sure everything was flexing. I took the bike out for a ride and everything was fine. I than took it back to my LBS for a check. The technician there said the cables stretch on new bikes and have to be adjusted after a few miles of riding. I had put on 150 miles and she said that was way to many before needing an adjustment. Anyway she adjusted the derailleurs and cables and the bike is ridding flawlessly.

Ron

Bull.Nothing like creating a dirt magnet.Lube is your friend,but only if you put it in the right place.

Agree. There's no need to lube cassette's (or chainrings). A clean, lubed chain will naturally deposit lube on any wear points.