I was servicing Patrick's CT200U-EX after our 20 mile ride yesterday and found the chain tensioner is badly scored by the chain. None of my bikes have this device and the bike has 50 mile total on it. I did notice this last Monday after our ride but it was nowhere near as bad as this is. I see no reason for this to happen as the bearing is free to turn and the chain rides flat on the pulley. The chain is still new and has no wear that can be seen or felt. The device has only slight end-to-end play.
Any ideas? Crap part? Get rid of it?
Any ideas? Crap part? Get rid of it?