(09-16-2012, 11:29 PM)Bill Wrote: Not too sure on this one but gonna take a shot. Your chain length maybe too long. Did you have the length of the chain changed after putting this Shimano Deore Derailler on? Who replaced your derailler? Before I go on Ill let you answer.
I was a actually a while back when the derailler was changed so I'm not sure if they changed the chain.
I did think that maybe the chain could be shortened, but when I put the gears into the 3-1 position, using the most chain, that also seemed to be at the other end of the maximum stretch of the derailleur!
I had it replaced at a bike repair shop which has not often come through for me. This was part of a major overhaul after a crash where I wrecked the original wheel and derailleur.
At that point I went through repair hell as they put on the wrong sized wheel and for a while every month a spoke would pop. I kept asking them if it was the wrong size and they insisted that it was ok. I went to another shop and they said the same thing. Finally I went to REI and demanded they give me the exact size (32mm width) I wanted, and they custom made me a wheel (they said there was nothing available off the shelf). That has worked great ever since.
But I also noticed that I seem to exert myself a lot more than other people on hills and also the chain was jumping when I was in say the 2-3 position and I exerted myself for speed. I made few turns on the rear cable adjustment and noticed it make a significant difference! But as I explored more I also noticed how the derailluer was riding up.
I went and looked at the original equipment for the Trek 7000 and I noticed the derailleur was much smaller. If you look at the picture, the arm with the two gears is very,very long. I'm not sure why that is or why the repair person picked that derailleur.
I am thinking of going back to REI...who did the work right...and asking them to replace the derailleur, but I was posting to see if anyone else things that model is absurdly sized and positioned to my bike!