Originally Posted by
Al1943
With the chain on the smallest cog and smallest chainring does the chain go slack? Maybe the chain is too long and/or stretched?
Al
No, the chain length is good.
Originally Posted by
Tom Velo Orange
there looks to be a little blip of metal in front of the rear derailleur mounting bolt. I don't think that should be there- it may need to be rotated or held in place as you thread the der into the frame.
...
The extra metal is a cam attached to derailleur complete with a spring mechanism and lock ring. I'm going with the theory this RD was originally off a bike w/o an integrated hanger and bolted on in a manner that secured the cam. Another clue is it turns out the bolt-on rear wheel is 27" and the front is 700c. Perhaps the previous owner damaged the rear wheel / RD.
I installed a different RD so the bike is up and running until I get a replacement 700c wheel.
Thanks all!