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  1. #1
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    29er XC Carbon Race Wheels Lightest Yet

    I just completed a high performance light weight XC race wheelset for a customer: ENVE Twenty9 XC tubeless clincher rims, Sapim CX-Ray spokes, Extralite Hyper hubs. Total rotating weight: 1,280g





    Edited to get both front and rear wheel pics showing
    Last edited by 4slomo; 05-16-2011 at 09:43 PM.
    Hey everybody, ride my wheels! They ride good, real good.
    I'm a wheel builder. SRLPE Wheel Works. Send me a PM.

  2. #2
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    for a Sulky? Wheelchair?

    - Joel
    Cycling is Serious Business.

  3. #3
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    Neither you nor I first realized that I inadvertently had the front wheel shown twice, so I edited the OP to show both front and rear wheels as originally intended.

    These are full on XC race wheels, but also strong enough for training and everyday XC riding.
    Hey everybody, ride my wheels! They ride good, real good.
    I'm a wheel builder. SRLPE Wheel Works. Send me a PM.

  4. #4
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    1280 for a 29er wheelset is quite impressive! Have you had a chance to ride them yet? Have you felt any flex issues with the radial lacing NDS on the rear wheel?
    Check out www.zencyclery.com for fully customizable, handbuilt wheels.

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  5. #5
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    Impressive build.

    What is the rider weight? Intended for races/training in what part of the country? How do they feel on the trail?

    Its all in the details!
    "Biking lets you come alive both in body and spirit- the bike disappears and you feel as if you're suspended in midair"GKlein

  6. #6
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    wow. nice.
    the only radial lacing i see is on the DS of the front. radial lacing is also stiffer than cross patterns (shorter spokes).
    Quote Originally Posted by pvd
    Time to stop believing the hype and start doing some science.
    29er Tire Weight Database

  7. #7
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    Yes, the front is radial drive side, and X3 non-drive side. The rear is X3 both sides. The racer is 165 pounds and and will be racing/training/riding in the Phoenix area. ENVE convinced me that 28 spoke wheels front and rear would be more than adequate for him. I don't feel any lateral deflection when deflecting the wheels by hand, they are totally solid feeling. I'll report on his riding impressions once he get a few rides in on them and gets back to me.
    Hey everybody, ride my wheels! They ride good, real good.
    I'm a wheel builder. SRLPE Wheel Works. Send me a PM.

  8. #8
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    sweet wheels there! a real indication of what is possible... how did the angle of the spokes work out with the rim molding?...my understanding is that enve dont recommend more than 2 cross due to interference of the rim and spoke at different angles so was going the other way and using radial ok?

  9. #9
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    The spokes are at the edges of the rim spoke holes, being laced X3 and radial (front DS) in this build. I didn't notice any binding of the nipples during tensioning and truing, maybe due to the beveled nipple ends. All of the EDGE/ENVE rims I've examined had the nipple seats set at 90 degrees in the rims. This hub design uses straight pull spokes, this defines the crossing angles for the spokes, and I wasn't interested in deflecting the spokes out of the hub spoke interface for this build. All that said, I have great respect for ENVE engineering and usually conform with their specifications.

    Quote Originally Posted by dRjOn
    sweet wheels there! a real indication of what is possible... how did the angle of the spokes work out with the rim molding?...my understanding is that enve dont recommend more than 2 cross due to interference of the rim and spoke at different angles so was going the other way and using radial ok?
    Hey everybody, ride my wheels! They ride good, real good.
    I'm a wheel builder. SRLPE Wheel Works. Send me a PM.

  10. #10
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    interesting! thanks,,,

  11. #11
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    Nice!

    I'm having an ENVE 29er UST AM wheelset built up- 20mm thru front & 150mm rear. I'll post up once I receive it.
    Tire Design & Development Engineer. The opinions expressed in this forum are solely my own.

  12. #12
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    Quote Originally Posted by 4slomo
    ...Total rotating weight: 1,280g...
    What is the weight including the axles? (they do not rotate) Do you count the freehub body as rotating (while pedaling) or non-rotating (coasting) weight?
    mtbtires.com
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  13. #13
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    Wow that is fkn light! I just picked up some Easton EC90 29ers and that set came in at 1440gms. Although I plan on using them everyday...
    C-DALE FLASH 29 Carbon 2 (19.6 lbs)
    C-DALE BB1

  14. #14
    LCW
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    1280??!! crazy light!!
    2011 Yeti 575 - 2015 Fox Float 36 RC2 160 / Fox Float X - 30.6 lbs

  15. #15
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    I use a non-rigorous definition of "rotating weight" as complete assembled hubs with freehub including axles (even though they don't rotate), spokes and nipples, and rims. I don't include variables such as rim tape, valve stems, QR skewers and etc. that you can add to wheels. This makes comparisons between wheel builds more straight forward.

    I think the most interesting thing is that this wheelset is both light weight and strong.

    Quote Originally Posted by shiggy
    What is the weight including the axles? (they do not rotate) Do you count the freehub body as rotating (while pedaling) or non-rotating (coasting) weight?
    Last edited by 4slomo; 05-17-2011 at 09:36 PM.
    Hey everybody, ride my wheels! They ride good, real good.
    I'm a wheel builder. SRLPE Wheel Works. Send me a PM.

  16. #16
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    What would be weight limit on these before needing to go with 32 spokes, for smooth XC
    Jboy

  17. #17
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    ENVE recommends 32 spoke mountain wheels for 165 pounds and up: http://www.envecomposites.com/manuals.aspx. I wouldn't push my luck with such expensive rims by using lower spoke counts if over 165 pounds.

    Quote Originally Posted by JBoy
    What would be weight limit on these before needing to go with 32 spokes, for smooth XC
    Hey everybody, ride my wheels! They ride good, real good.
    I'm a wheel builder. SRLPE Wheel Works. Send me a PM.

  18. #18
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    How many grams would the extra 8 spokes add?
    Jboy

  19. #19
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    Quote Originally Posted by JBoy
    How many grams would the extra 8 spokes add?
    CX Rays at that length are ~4.8g per, so 38.4g + ~2.5g in nipples, or about 41g total.
    that's ignoring any differences in the rim and/or hub.
    Quote Originally Posted by pvd
    Time to stop believing the hype and start doing some science.
    29er Tire Weight Database

  20. #20
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    I'm calculating an extra 42g for 8 spokes and nipples.

    Quote Originally Posted by JBoy
    How many grams would the extra 8 spokes add?
    Hey everybody, ride my wheels! They ride good, real good.
    I'm a wheel builder. SRLPE Wheel Works. Send me a PM.

  21. #21
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    Customer feedback on his wheelset: "In a word awesome. The maiden voyage was successful. The wheels are amazing. Very stiff and they track true. Thanks, again."
    Hey everybody, ride my wheels! They ride good, real good.
    I'm a wheel builder. SRLPE Wheel Works. Send me a PM.

  22. #22
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    Nice one. I built myself a set of those rims up, but with DT 240 hubs and CX rays, so they're a little heavier than that set... but DAMN are they a nice wheel to ride.

  23. #23
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    Tubeless setup?
    Do these rims need a rimstrip or is tape enough?

  24. #24
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    No rim strip, just the supplied tape, which is very simple to apply and has been trouble free for me.

  25. #25
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    ENVE XC Tubeless rim preparation

    I use several layers of a thin rim tape, to get a good airtight seal over the spoke nipple holes. Gorilla tape or equivalent is then used to build up the rim as necessary to get the tire bead to fit to the rim bead hook.

    No rim strip is needed, as previously mentioned.

    Quote Originally Posted by Dikkie View Post
    Tubeless setup?
    Do these rims need a rimstrip or is tape enough?
    Hey everybody, ride my wheels! They ride good, real good.
    I'm a wheel builder. SRLPE Wheel Works. Send me a PM.

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