Bent RD hanger or jockey wheel?

kingofthetailwind
kingofthetailwind Posts: 575
edited July 2013 in Workshop
On the way home last night the chain jammed in the RD of my 80's Viking Vision. I took the chain off and fitted it again, but it's not running through the lower jockey wheel smoothly now:

http://youtu.be/xHribz5Oc78

9358692763_55e70b2924.jpg

Have I bent the Derailleur hanger? Or the lower jockey wheel> The clunking noise in the video seems to be from the lower wheel. The teeth seem to hitting the outside of each chain link, and then jumping back in again.

Comments

  • Wirral_paul
    Wirral_paul Posts: 2,476
    That cage looks like it is bent - especially the inner plate. Do the two jockey wheels line up perfectly with each other??
  • kingofthetailwind
    kingofthetailwind Posts: 575
    No they look like they're a bit out of alignment?
  • kingofthetailwind
    kingofthetailwind Posts: 575
    So is this a mechanic job, or a brute force and ignorance job to try and align it myself?
  • keef66
    keef66 Posts: 13,123
    As a matter of personal pride I'd be trying the brute force and ignorance option first.

    And keep in mind that the mech hanger might be bent as well...
  • Wirral_paul
    Wirral_paul Posts: 2,476
    Brute force with two adjustable spanners across the jockey wheel pivot points to line them back up should held. I'd unbolt the mech from the hanger first though - as if the hanger isnt bent already, it may get bent when you straighten the mech. Little bit at a time with the bending - and worth covering the aluminium with some tape of a cloth to help prevent marks from the spanners.
  • kingofthetailwind
    kingofthetailwind Posts: 575
    OK cheers, I'll have a go. I've half a mind to convert this to SS, so if I mess it up I'll have a back up option!

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