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  1. #1
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    Cannondale crankset weights

    I cannot find weights on Cannondale's crank sets. Does anyone know the weight of:
    Si, BB30, 36/26 CNC Rings
    Hollowgram Si, BB30, 36/26
    Hollowgram SiSL, BB30, 36/26

    I'm considering a light weight hardtail with 2x crank set.

    Thanks!

  2. #2
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    Do a google image search. Unless we know the BCD and exact ring combo (brand) that you're using, it will be hard to find those exact weights. But, you should be able to get pretty close; you can see the 39/26 XX spider by itself, plus the weights of arms, etc. here.

    https://www.google.com/search?q=cann...ih=617#imgrc=_
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  3. #3
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    There's been a few generations of Cdale crank arms. Current weights are:

    Si: not able to find good info, but they are standard forged like old Shimano and lower end forged crank arms, so expect heavy
    Hollowgram Si: 165 per arm
    Hollowgram SiSL2: 125 per arm

    In the past there was an SISL (not 2) that split the difference at 140ish.
    The Si Hollowgram uses a once piece forging process so a little heavier whereas the SISL2 uses the clamshell technique for ultimate machining out of material for weight. tThe Next Sls look to be about 154 so the SISL2s can be significantly lighter and the Si Hollowgrams are real close. Still the best aluminum crank arms on the market for weight.
    You can use Raceface spindles and bottom brackets for your required build. Weights regarding chainrings, etc. just depend on your choices. If you are going to go 2x, just go with a standard Cannondale spider and choose rings that fit according to weight or features.
    Good news is even if you choose the SI Hollowgram you are saving almost exaclty 100 grams on the crank arms alone vs Shimano XTR and you can use pretty much any spider,ring combo you choose.

  4. #4
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    Quote Originally Posted by rumblytumbly View Post
    Good news is even if you choose the SI Hollowgram you are saving almost exaclty 100 grams on the crank arms alone vs Shimano XTR and you can use pretty much any spider,ring combo you choose.
    Where did you get this number? Just wondering since the XTR includes the spindle and spider
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  5. #5
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    Here's a picture of a set of mine with a triple ring spider and a 1x, 36t ring. 170mm arms, spinder, crank bolts. These are older SiSLs. The SISL2s are lighter.

    Here are some XTRs.

    https://goo.gl/images/FvwmNp

    Sent from my XT1585 using Tapatalk
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  6. #6
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    Quote Originally Posted by TwoTone View Post
    Where did you get this number? Just wondering since the XTR includes the spindle and spider
    Just based on a google image search of the LH XTR crank arm.

  7. #7
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    That's an xtr double in that image.

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