K edge chain catcher fitting

focuz
focuz Posts: 150
edited June 2013 in Workshop
mech1_zps803c5a63.jpg
kedgee_zps68612d38.jpg
I was wondering whether the k edge double chain catcher is meant for my front deralier? as the silver piece of metal is a different shape than where it is meant to fit onto.

Comments

  • haf1zur
    haf1zur Posts: 124
    this may help

    http://www.youtube.com/watch?v=BSccQAz89ls
    http://www.facebook.com/BringBorisBikesToNewham
  • pholt89
    pholt89 Posts: 56
    I fitted one of these the other day and had the same problem with my mech clamp having a flat surface and the chain catcher having a curve one. I got around it by just carefully filing the curved edge of the silver part down until it was flat and then using a slightly longer bolt than the ones supplied.
    Seems to work fine.
  • focuz
    focuz Posts: 150
    Thanks for the help, i will do that. What did you fill it with?
  • flasher
    flasher Posts: 1,734
    If you look at images of a fitted Shimano front derailleur you'll see that the mount is curved.

    da09-frdllr.jpg

    By the looks of it you just need a flat washer.
  • sandyballs
    sandyballs Posts: 577
    I would not use a flat washer and just clamp straight on without the curved washer. Reason for this is if you check the mating surface it is serrated, these are to resist the pressure from the chain simply twisting the catcher across. I think a flat washer would not give the same grip on the washer to braze on surfaces. The serrations will leave marks on your braze on mount though.
  • edten
    edten Posts: 228
    If the surface you are fixing to is flat you could use a vibration washer. If I remember correctly a couple of Token chain catchers came with such washers.
    Vibration washer - see here...
    http://int.rsdelivers.com/product/rs/di ... 76875.aspx
  • pholt89
    pholt89 Posts: 56
    Sorry typo in my previous reply should have said filing not filling.
  • sungod
    sungod Posts: 17,413
    the curved spacer is optional

    if the front mounting face on the fd clamp is flat, you just mount the k edge direct with no spacer
    my bike - faster than god's and twice as shiny
  • focuz
    focuz Posts: 150
    hmmm :P , thanks for the advice guys :D, idk what option is the best. Might just bolt it on without the silver bit but it may move :L or filing it seems the best option imo.
  • flasher
    flasher Posts: 1,734
    Focuz wrote:
    hmmm :P , thanks for the advice guys :D, idk what option is the best. Might just bolt it on without the silver bit but it may move :L or filing it seems the best option imo.

    It wont move if tight, there's hardly any pressure from the chain, all it does is deflect the chain back onto the rings.
  • Bar Shaker
    Bar Shaker Posts: 2,313
    I fitted mine without the spacer. It has never moved.

    It blocks the chain before it gets a chance to come off, so the lateral load is very light.
    Boardman Elite SLR 9.2S
    Boardman FS Pro
  • focuz
    focuz Posts: 150
    Bar Shaker wrote:
    I fitted mine without the spacer. It has never moved.

    It blocks the chain before it gets a chance to come off, so the lateral load is very light.
    Ok will do that, thanks

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