Hammerschmidt on Helius AC- Mtbr.com
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  1. #1
    mtbr member
    Join Date
    Nov 2005

    Hammerschmidt on Helius AC

    Long time lurker coming out of the cupboard.

    I have this set up on my BB for the ISCG tabs

    Hammerschmidt on Helius AC-9218299132_16b9042e46_c.jpg

    I was hoping to fit a Hammerschmidt crank set to it however when I fit the backing plate it doesn't clear the adapter.
    Hammerschmidt on Helius AC-9215533681_ca45115135_c.jpg

    Hammerschmidt on Helius AC-9215550623_a3fc9f91ab_c.jpg

    Hammerschmidt on Helius AC-9218316608_92d9cf1182_c.jpg

    I would need to remove this..

    Hammerschmidt on Helius AC-9215528215_f1c0c0f302_c.jpg

    Any other options apart from not fitting it?

    Many Thanks


    found this on Nicolai site

    Almost all NICOLAI frames are available with adapters to mount Shift guides, Chain guards, or Hammerschmidt® internal gear cranks. For models where chain-guards are mandatory or where the use of Hammerschmidt® cranks makes sense we offer mounting adapters as a surcharge-free option. We offer 3 different kinds of adapters. The ISCG 03 and 05 type is fixed with a bolt between a weld-on part at the frame and the chain-guard. The slotted holes enable further positioning as the adjustability of chain-guards is often limited. The ISCG adapters are not compatible with Hammerschmidt. We offer a special weld-on adapter to mount the Hammerschmidt directly onto the frame. This weld-on Hammerschmidt adapter on the other hand is ISCG 03 compatible and can be used for chain-guards.

    Name:  99-iscg03-img_5007.jpg
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    Name:  99-iscg305-img_5006.jpg
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    so it would appear not!!
    Attached Thumbnails Attached Thumbnails Hammerschmidt on Helius AC-2013-07-05-16.53.49.jpg  

  2. #2
    mtbr member
    Join Date
    Sep 2008
    My Old AC had Hammerscmidt iscg, was completely different to the one shown.
    Is a fixed mount that has been faced as the hammerschmidt needs perfect alignment.


  3. #3
    mtbr member
    Join Date
    Nov 2005
    I have what I have, I'm looking for a possible work around to fit a HS.

    When I bought the frame I did ask if it had ISCG 05 tabs, which it does but I didn't envisage that it wouldn't be suitable for the HS, lesson learnt there.

    So anyone any idea's or suggestions other than buying a new frame?

  4. #4
    mtbr member
    Reputation: dipper's Avatar
    Join Date
    Jun 2005
    HS compatible tabs are a much stronger welded on affair. in theory those mounts above are not strong enough for the HS. im not entirely sure why but i guess its to do with the torque applied when in overdrive. although considering the HS itself is only held on by 3 small allen screws cant see why it would matter!

    flash bikes for flash gits

  5. #5
    mtbr member
    Join Date
    Nov 2005
    Update and thanks to Swavis from another forum , I'm now sorted.

    He made me this mount

    Fitted to the frame

    Many thanks Swavis

    and no thanks go to Nicolai for your non help, still awaiting an email reply...

  6. #6
    mtbr member
    Join Date
    Jul 2008
    Excellent job. I known the guys at Nicolai are very busy at the moment getting sorted for Eurobike. No excuse, but probably the case.
    Aka chainline...

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