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  1. #51
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    Actually, I found the compression washer. It looks different than the other ones. So I think I'm all good.

    Refer to the following photos:

    1) BB NDS w washer installed. It was already "pressed" in.
    2) BB w washer removed
    3) Compression washer
    4) Drive Side spacing between crank arm and BB, 2.5mm. This actually makes sense...I had a Shimano BB in there and it came installed w/ a 2.5mm washer. It's just strange that the GXP crank "floats" on the DS, but I understand now how it's secured on the NDS.

    Ah...This floating gap allows the use of a chain guide w/o affecting chain line. Genius!
    Attached Thumbnails Attached Thumbnails Sram gxp 73mm bottom bracket h question...-img_3663.jpg  

    Sram gxp 73mm bottom bracket h question...-img_3662.jpg  

    Sram gxp 73mm bottom bracket h question...-img_3661.jpg  

    Sram gxp 73mm bottom bracket h question...-img_3664.jpg  

    Last edited by nsxtc; 07-14-2013 at 07:17 AM.

  2. #52
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    if a threaded sram GXP needs chainline adjustment towards the right (away from the bb), how is this accomplished?

    i understand that putting spacers on the NDS bb shell adjust the chainline inboard (towards the bb)

  3. #53
    Trail Tire TV on blogger
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    Quote Originally Posted by spyghost View Post
    if a threaded sram GXP needs chainline adjustment towards the right (away from the bb), how is this accomplished?

    i understand that putting spacers on the NDS bb shell adjust the chainline inboard (towards the bb)
    don't put a spacer behind the bb cup... if that's not enough there there is likely an issue with you frame
    Going to try and bring Trail Tire TV back. go take a look... http://trailtiretv.blogspot.com/

  4. #54
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    Sram gxp 73mm bottom bracket h question...

    Quote Originally Posted by thomllama View Post
    don't put a spacer behind the bb cup... if that's not enough there there is likely an issue with you frame
    If putting a spacer in a 73mm threaded gxp is not possible, then i also cannot put a bb bash guard? Frame doesn't have iscg.

    What's the resulting chainline for a NW 1x spideless x9 and x7?

  5. #55
    Trail Tire TV on blogger
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    yes,.. there is room on the drive side... the Non drive side does all your adjustments and holding of the crankset...

    newer (2010 and later I believe) GXP BB cups are set slightly smaller on the drive side to comp for the room needed for BB mounted accessories

    there always needs to be a slight space between the Drive side cup/bearing and the spider.. (thou the now have a way washer there to lightly push and keep the seal from moving out.)
    Going to try and bring Trail Tire TV back. go take a look... http://trailtiretv.blogspot.com/

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