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  1. #1
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    Reputation: rogrider's Avatar
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    New XT Crank install...help please....

    Just finished up installing my new XT 760 cranks on an 07 Stumpy HT. Pretty sure I did it right but can someone please confirm that you use 2 spacers on the chainring side and 1 on the non-drive side when assembling the bottom bracket cups ?

    Thanks fellas,
    Rog
    2005 Stumpy FSR Expert 120
    2007 Stumpy Comp HT

  2. #2
    mmm
    Reputation: timehoc's Avatar
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    Quote Originally Posted by rogrider
    Just finished up installing my new XT 760 cranks on an 07 Stumpy HT. Pretty sure I did it right but can someone please confirm that you use 2 spacers on the chainring side and 1 on the non-drive side when assembling the bottom bracket cups ?

    Thanks fellas,
    Rog

    As long as you have a standard clamp derailleur...you are correct. two spacers on the driveside.
    ↑ ↑ ↓ ↓ ← → ← → B A Select Start

  3. #3
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    Thanks Timehoc, It just looked like the chain line was a bit off. Guess its just the way it is.
    2005 Stumpy FSR Expert 120
    2007 Stumpy Comp HT

  4. #4
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    Sorry to hyjack this thread.

    but Im about to install the XT fcm 760 crank set to a 2005 enduro, Does the same spacer rule apply?.

    Thnaks

  5. #5
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    Quote Originally Posted by bainsey
    Sorry to hyjack this thread.

    but Im about to install the XT fcm 760 crank set to a 2005 enduro, Does the same spacer rule apply?.

    Thnaks
    I used 1 2.5mm spacer on the drive side, none on the non drive.

    wayne
    89 Univega HT -???-
    92 Specd SJ HT M2 -stolen-
    92 Specd SJ HT M2 -sold-
    94 Specd SJ HT M2 -sold-
    97 Klien Mantra -sold-
    01 Specd enduro FSR
    02 Specd enduro FSR -sold-
    04 Specd stumpjumper FSR
    05 Specd enduro FSR Sworks

  6. #6
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    Reputation: CSPRINGS's Avatar
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    New Outboard Bearing Cranks....

    ..all have a significantly different chainline. Current frames are designed for the standard chainline. I tried the new chainline on my Enduro, and it looked way off, so I bought the older XT cranks...perfect shifting, no chainsuck due to larger gap and poor chainline, kept original Q Factor.

    You can search for my rant on the new chainline...

    Peace

  7. #7
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    Heres how it works:
    If your bottom bracket tube (the tube that is part of the frame, aka BB shell) is 73mm wide, then you only need one spacer on the drive side. If your bottom bracket tube is 68mm wide, then you need two spacers on the drive side and one on the non-drive side.

    If you are using an E-type (BB mount) front derailleur, then that drive side spacer goes away and you install your front der. there.

    You can measure the tube width with any calipers, or maybe even a tape measure, then convert to MM by dividing the inch measurement by 25.4.

    thats it in a nut shell.
    I dont know what specialized's shell widths are, maybe someone can chime up.

  8. #8
    Vaginatarian
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    or, you can measure from the middle of your seat tube to the middle chainring, you're looking for 50mm

  9. #9
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    I used 1 spacer on the drive side and 2 on the non drive side on my 05 FSR Expert 120.
    This set up works great.

  10. #10
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    Quote Originally Posted by Long Tooth
    I used 1 spacer on the drive side and 2 on the non drive side on my 05 FSR Expert 120.
    This set up works great.
    I also did this on my 04 SJ FSR 100. It just seemed to be better...

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