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Can this be done?

ForbseyForbsey Posts: 65
edited June 2010 in MTB workshop & tech
I want to know if anyone has fitted a SRAM XX chainset and run a Dura-ace 9 speed chain with an XTR 9 speed rear cassette. I want to use the XTR shifters but will need a SRAM front Mech and a bottom bracket adapter.

Just seeing if i can just swap my XTR front chainset for a SRAM XX one with minimal change to the rest of the bike.
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Posts

  • stu8975stu8975 Posts: 1,334
    Any reason for the change?...if it's to go 2x9, convert your xtr (well, if it's a 970 version), will come out bit lighter than the xx, which is about the same weight as the 970 triple.
  • nicklousenicklouse Posts: 50,675 Lives Here
    well it seems that the XX front mech appears to be only compatible with the XX shifter.

    i too would just change the rings on the cranks.
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  • njee20njee20 Posts: 9,613
    Yes you should be fine, Dave Collins is running that set up, although you may need to run Grip Shift to get the best shifting, XX front mechs pull different amounts of cable.
  • ForbseyForbsey Posts: 65
    Thanks for that guys. I am at the point of having to change the XTR front chainset and was wondering about going for the XX on the front. I know someone who is going to try it out soon so will get some feedback from them.

    Not sure if I want to run gripshift. Used to run them but much prefer the trigger shifters. The price of XTR and XX is so expensive now but things wear out so when it comes time to replace them you don't want to make a mistake.
    Follow me on twitter: @OnOneScott

    http://scottforbesracing.tumblr.com

    National Masters XC Champion 2009. Masters Series Champ 2010. Broke my neck at the start of 2011.

    The now famous Travel Bike http://bit.ly/gc4Tn8
  • stu8975stu8975 Posts: 1,334
    New XTR isn't far away...heard the details will be disclosed to the public around end of June start of July and available around Sept/Oct. You could convert your XTR to 2 ring for about £60-£70 if it's the rings that are worn out.
  • ForbseyForbsey Posts: 65
    If anyone is interested. I have now fitted a SRAM XX chainset (42-29) to my anthem but am running Shimano XTR rear block with a dura ace 9 speed chain. I have had to replace the front mech with an XX one but have left the front shifter as an XTR.

    It works really well. The XTR shifter only has to make one shift and this can be adjusted with end stops and cable tension. The pull on the XX front mech is the perfect amount and shifts lovely.

    I had to put a Chris King BB adapter in to take the new XX spindle but apart from that nothing else has changed.

    So now I have a double chainring chainset with the 158Q factor running on XTR 9 speed and so when going from big to big there is minimal chain displacement.

    Very happy with how this has worked out. My XTR chainset had worn out and was going to need replacing but for a little extra I have managed to have a fully functioning double chainring front end.

    :lol::lol:
    Follow me on twitter: @OnOneScott

    http://scottforbesracing.tumblr.com

    National Masters XC Champion 2009. Masters Series Champ 2010. Broke my neck at the start of 2011.

    The now famous Travel Bike http://bit.ly/gc4Tn8
  • stu8975stu8975 Posts: 1,334
    Still would of just converted the XTR for considerably less money..apart from the q-factor, you haven't gained anything over a conversion.
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