Sub 700g Crankset w/bb 1x9- Mtbr.com
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  1. #1
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    Sub 700g Crankset w/bb 1x9

    Hey Guys,

    Can I get some recommendations for a sub 700g crankset w/bb and chain ring 1x9 and under $400.

    Working on resurrecting an old build. I'm currently running the Kcnc xc2, but have had troubles finding sprockets. I want to run a 38t.

    BB 68/73

    Thanks for your help!
    Z

  2. #2
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    An XTR crankset would be sub 700g with a light weight ring.

  3. #3
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    Looking at the ethirteen xc crank. Comes in at 595 w/BB. Can find a 38t chainring under 100g easy. Any comments?

  4. #4
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    Quote Originally Posted by zburt View Post
    Looking at the ethirteen xc crank. Comes in at 595 w/BB. Can find a 38t chainring under 100g easy. Any comments?

    https://www.sicklines.com/gallery/sh...racket/cat/529
    Last edited by COLINx86; 07-26-2011 at 07:06 PM.

  5. #5
    "They Call Me Bone'z"
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    extralite... 502g with BB
    RAH!

  6. #6
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    Cannondale Hollowgram SL with a single ring would be damn light too, of course using the Zipp bb30 to standard kit.

  7. #7
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    He said under $400.

  8. #8
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    Buy an XTR crank and sell the rings brand new on ebay. You should be able to get more than $100 for them. Take this money and buy a single ring of whatever tooth size you want. Should come in around 670-690 grams(ish) for less than $400.

    Just a guess on the weight from what I can remember in my head though. Don't quote me on it.

  9. #9
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    I'm looking at the e.thriteen xc single crank set myself, the weight listed on an online retailer is 665g with BB, price is great at $250 or so, and I'll throw my 34t Race Face single speed ring on it and be about 700 grams total.

    Any reason not to use the e.thirteen single for a 1x10 with an MRP BB mounted guide?
    Hardrock 29er, Niner EMD9, Cannondale F29, Camber Expert, 650b Nickel all gone.
    2014 Giant Anthem 27.5 here.

  10. #10
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    Quote Originally Posted by madsedan View Post
    I'm looking at the e.thriteen xc single crank set myself, the weight listed on an online retailer is 665g with BB, price is great at $250 or so, and I'll throw my 34t Race Face single speed ring on it and be about 700 grams total.

    Any reason not to use the e.thirteen single for a 1x10 with an MRP BB mounted guide?
    BB seals seem crappy: click here.

  11. #11
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    Well it sounds like it may be hit or miss with the bearing caps but that you'll know when you install it if there is a problem and they'll fix the issue, thats also from several months ago so they may have made a change to the caps.
    I will probably still give them a try, they fit my needs in all respects.
    Hardrock 29er, Niner EMD9, Cannondale F29, Camber Expert, 650b Nickel all gone.
    2014 Giant Anthem 27.5 here.

  12. #12
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    year and a half on my e-thirteen single and like it a lot. Stiff and good wearing. Yes, the bb cap can be a problem. Had a few times in rainy conditions that grime got underneath and made a terrible crunching noise. No damage and a quick wash before the race cured it.

  13. #13
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    I weighed my race face duec XC crank arms at 550 grams which is only 13 grams more then my m970 XTR arms at 537 grams. The duec XC is a pretty cheap and good option, you can buy em new for really cheap, and they come in a variety of colors.

    add 90-100 grams for a light BB and you have a good cheap lightweight setup.

  14. #14
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    Looking hard at the Xtr m970! U guys are pushing me in the right directions Thanks!

  15. #15
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    Hey Madsedan, If you get the ethirteen can you through them on a scale and post it. I know someone already posted a pic, but I would like a 2nd oppinion! lol Going to probably buy a set of cranks next in a few weeks.

  16. #16
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    Quote Originally Posted by amillmtb View Post
    Cannondale Hollowgram SL with a single ring would be damn light too, of course using the Zipp bb30 to standard kit.
    Zipp makes a kit to convert a BB30 crank for use with std BB shells? I'd love some more info on this.

  17. #17
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    Will do!
    Hardrock 29er, Niner EMD9, Cannondale F29, Camber Expert, 650b Nickel all gone.
    2014 Giant Anthem 27.5 here.

  18. #18
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    heres your 38t....
    http://www.google.com/search?q=Xtr+m...w=1229&bih=868

    just installed the KCNC crank in mine... love it (setup as 1x9 w/ 36t) running it with FSA bash guard and LOPES chain guide.... the red lines show where i had to shave the guides to clear the bash guard... very minor filing...
    Attached Thumbnails Attached Thumbnails Sub 700g Crankset w/bb 1x9-mrp-lopes.jpg  


  19. #19
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    Very nice! Total weight with gaurds and all? I have the Kcnc on my current xc race bike.

  20. #20
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    Quote Originally Posted by zburt View Post
    Very nice! Total weight with gaurds and all? I have the Kcnc on my current xc race bike.
    wish i could tell ya.... didnt weigh it.... but just by holding this crank and my old FSA CARBON TEAM ISSUE crank in my hands there was a huge difference in weight... im betting couple hundred grams worth of difference easy .... plus the FSA was 175mm and the KCNC is 172mm... the KCNC seems to pedal easier ... the chain guide i took off was way heavier also....the lopes guide came in at 115g (advertised at 104g)...

  21. #21
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    Quote Originally Posted by Durga View Post
    Zipp makes a kit to convert a BB30 crank for use with std BB shells? I'd love some more info on this.
    You can use the Zipp, e13, Rotor, THM or any bearing cups that house bearings with an internal diameter of 30mm to adapt bb30 cranks to standard BSA bottom bracket shells. There will always be some additional tinkering required though or it just may not work. Examples; Cannondale Hollowgram requires a 122mm or longer spindle and some machining done it to remove the lip. Specialized MTB crankset needs some custom spacers made. Specialized road crankset just won't fit as the spindle isn't long enough.

    You can buy the complete modified Cannondale Hollowgram bottom bracket/spindle from Dr. Cannondale in Germany http://www.cannondale-parts.de/epage...Products/KP094

  22. #22
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    So could someone use the Zipp, e13, Rotor, or THM cups to convert ANY BB30 crankset? Say even an FSA Crankset?

    Thanks.

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