Shadow Rear Mech - Chainsuck Hell
Spent the last few weeks trying to sort out problems with chainsuck after an hour or so's riding in summer conditions (occasional puddles and a little mud). Chainrings were a couple of years old so changed em which helped. Old chain was only 0.5% worn but changed it anyway. Still the same problem. Better but but was still getting problem when dropping from middle to granny ring. Shortened chain to be 1 full link less than the various guidelines but problem persisted. Only sorted the problem when I changed my newish Shadow rear mech for a "regular" model. My assumption is that the shadow is not capable of taking up chain slack quick enough to take up chain tension following a downshift because it only has a single tensioning spring rather than the usual two. I hope this helps other people with their choice of deraillure !