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Rear Derailleur Hanger Snapped on Trek 5200 OCLV US Postal

Sea.JockySea.Jocky Posts: 11
edited December 2014 in Workshop
Hello All,

I have just been given a Trek 5200 OCLV Carbon 120 bike, however the rear derailleur hanger has snapped, is there any way to fix this other than having a specialist remove the whole part from the frame and replace with a new one?

Or can I buy a rear derailleur hanger to fix on to this somehow..I don't see how I can though

Photo Below

.. Is it worth it, or do I pass on this opportunity?

Thanks in advance for your hep

Posts

  • arlowoodarlowood Posts: 2,527
    I built up a 2002 5200 frame about a year ago and from recollection the rear dropouts/mech hanger are pre-formed alloy units that appear to be bonded into the seat and chain stays.

    14866261305_36b5d4df1a_b.jpg

    16068669076_3ce14c7b8e_b.jpg

    Doubt if they could be easily removed to effect a replacement (even if one existed). I also doubt that it would be an easy job to create a mech fixing point by modifying the damaged dropout/hanger unit.

    However these are only my opinions. Might be worth contacting one of the carbon frame repair specialists to see if they can suggest a way round the problem. Can't imagine it's going to be cheap though
  • Thanks, you are completely correct, looks like my only option will be to take it to a carbon specialist. Starting to debate whether this is worth the trouble or not
  • Yeah Im not sure how well these will fit and if they will cause the width to increase which in turn messes the derailleur up.

    What are peoples opinions on a Axle Mounted Rear Deraillier...?
  • arlowoodarlowood Posts: 2,527
    Salsa wrote:


    Reading the blurb suggests that it is more of a "sticking plaster" to get you out of trouble if your hanger breaks on a long ride. Suggests that it will get "most of your gears back" which is probably not what the OP is looking for.

    Good emergency spare to carry though
  • so is an axle mounted derailleur an option?
  • arlowoodarlowood Posts: 2,527
    Sea.Jocky wrote:
    so is an axle mounted derailleur an option?

    Could be an option but the ones I've seen with a quick Google seem to be directed at the MTB community.

    http://www.bike-discount.de/en/buy/shim ... tAodijYAWA


    Still if it means you can get the frame rideable then maybe it's a compromise worth considering.

    A more radical approach might be to re-engineer the rear drop-out to accept a bolt-on claw type adapter as described in this link

    http://www.yellowjersey.org/rlfix.html

    Not sure how feasible that would be but it might be worth considering as a last resort.

    If you've got a local friendly frame builder, light engineering company, classic car restorer or similar - I'm sure they could offer up a few suggestions
  • Monty DogMonty Dog Posts: 20,614
    Wouldn't recommend trying to unbond the bust drop out and replacing it unless you have access to a frame jig and you'll probably need to remove the chainstay too. Also, chances of being able to find a drop out are pretty slim given the age of the frame. Getting someone to machine-up a suitable replacement could be costly if you don't have someone friendly. The Problem Solver hanger is probably the best compromise, unless you fancy a fixed-gear conversion?
    Make mine an Italian, with Campagnolo on the side..
  • Had same problem. LBS sent frame to Trek and they replaced hanger. Total cost with shipping $70.00.
  • SalsaSalsa Posts: 753
    This was what I was trying to think of when I posted the emergency hanger>
    http://www.sjscycles.co.uk/dropout-save ... prod26492/
    I'm sure I used one of these on a bike a few years back and it worked fine. Drill out the hanger hole and insert that.
  • Thanks for all of your comments, i have decided this is going to be too much to repair, and with using a universal hanger i would loose some gears, i also didn't want to turn this into a fixie, So I am going to sell!
    I have no idea how much it is worth though...everything is there except a front wheel, of which the back is a bontrager race lite. Unfortunately i cannot upload any pictures due to file size
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