i dug my tourer out from underneath a thick layer of dust and set about tuning it up for spring only to remember it had a really annoying problem with the drivechain.
whenever i backpedal something won't reverse fast enough and the chain ends up getting sucked downwards on top and the derailleur gets pulled forward. the chain isn't thrown off and normal forward cyclin doesn't seem to be affected.
i have replaced both the chain and the freehub body to no avail and am feeling stumped.
set up is eight speed shimano, LX hub, deore chainset, sram pc 830 chain 9 speed XT derailleur front and rear (reverse rise)
two further thoughts are the chain rings are worn out which doesn't seem to be the case and the rear derailleur wheel pulleys are clogged somehow. of course one of the small pulley screw heads has stripped on me
any thoughts appreciated.