Does this look like a misaligned rear hanger?

timbob67
timbob67 Posts: 30
edited May 2015 in Workshop
Brand new Genesis Equilibrium 30 (Campagnolo Athena). Chain rub noises coming from the rear when in the big ring and the higher gears on the cassette. This picture shows the situation in top gear (50x11), you can see the chain rubbing on the inside of the jockey wheel cage.

My (inexperienced) verdict is that the hanger is misaligned and looks like it needs a tweak inwards at the front - any thoughts?

Click to enlarge:

4ooNcB.jpg

Comments

  • blackpoolkev
    blackpoolkev Posts: 474
    Gear hanger problems are nearly always as a result of the bike falling onto the drive side. Even a gentle fall caused by a gust of wind toppling a parked bike can throw things out.
  • keezx
    keezx Posts: 1,322
    Impossible to judge by that picture, we need one shot from behind with cage+ cogs.
  • timbob67
    timbob67 Posts: 30
    Keezx wrote:
    Impossible to judge by that picture, we need one shot from behind with cage+ cogs.

    From behind the cage and dogs it's hard to tell - I've not managed to get a picture that with everything in focus that needs to be. It looks to me like the two jockey wheels are not in line with the cogs on the cassette.

    My point is that I'm pretty sure the chain should not be rubbing on the cage. I've aligned the photo with the cage straight, and you can see the chain veers off to the side to make its way to the large chain wheel.
  • svetty
    svetty Posts: 1,904
    Never ideal to determine hanger alignment by eye - you'll only pick up crude problems. Small alignment issues need an alignment tool. They're cheap and will save you in the long run :)
    FFS! Harden up and grow a pair :D
  • crankycrank
    crankycrank Posts: 1,830
    Svetty wrote:
    Never ideal to determine hanger alignment by eye - you'll only pick up crude problems. Small alignment issues need an alignment tool. They're cheap and will save you in the long run :)
    +1. Nearly impossible to detect small misalignments. It should be fairly inexpensive to have a shop check it but getting the tool is a wise investment if you plan on doing this cycling thing for more than several years.
  • timbob67
    timbob67 Posts: 30
    crankycrank wrote:
    Svetty wrote:
    Never ideal to determine hanger alignment by eye - you'll only pick up crude problems. Small alignment issues need an alignment tool. They're cheap and will save you in the long run :)
    +1. Nearly impossible to detect small misalignments. It should be fairly inexpensive to have a shop check it but getting the tool is a wise investment if you plan on doing this cycling thing for more than several years.

    Thanks chaps - I've picked up the Park Tools tool, and had a play. The hanger was out - over half an inch difference (out at the front). Sorted now :)

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