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  1. #1
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    Wheels manufacturing conversion cassette - update

    Has anyone tried a conversion cassette on a handbuilt Dura Ace 7850 hub with Dura Ace 9000 11 speed shifters? The Wheels site says Campy only.
    Last edited by steelbikerider; 08-02-2016 at 02:50 PM.

  2. #2
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    Unless the Shimano hub is 11-speed compatible, it will not have sufficient freehub space to accommodate an 11-speed cassette, without interference at the hub flange and/or lockring end.

    There is an important dimensional difference between Shimano hubs and generic hubs with Shimano compatible freehubs.
    Last edited by bikerjulio; 06-14-2016 at 11:29 AM.
    We just don’t realize the most significant moments of our lives when they’re happening
    Back then I thought “well there'll be other days”
    I didn’t realize that was the only day
    https://www.youtube.com/watch?v=Y9yrupye7B0

    There's sometimes a buggy.
    How many drivers does a buggy have?
    One.
    So let's just say I'm drivin' this buggy...
    and if you fix your attitude you can ride along with me.
    http://www.youtube.com/watch?v=GekiIMh4ZkM

  3. #3
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    Quote Originally Posted by steelbikerider View Post
    Has anyone tried a conversion cassette on a handbuilt Dura Ace 7850 hub
    What exactly is a "hand built DA hub"? Did somebody CNC machine it for you?

  4. #4
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    Should read handbuilt wheel with standard spokes and HED rims as opposed to factory built with Shimano rims and straight pull spokes. Excel sports said it should work so I will post when I try it.

  5. #5
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    I never heard of a hub that can take straight or bent spokes, but I don't get around much.
    BANNED

  6. #6
    RoadBikeReview Member
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    It might have been better to ask Wheels. I find their description confusing

    11 SPEED SHIFTING


    Install 11 Shimano cogs on Shimano compatible freehub body for use with 11 speed Campagnolo shifters
    Reliable Shimano ramping for excellent shifting
    All wheelset-compatible with the exception of Shimano Dura Ace or Ultegra factory wheelsets (not hubs laced on standard rims), and Chris King.

    Installation
    as in WTH would the rims make any difference?

    It's Shimano hub dimensions that are the problem.
    We just don’t realize the most significant moments of our lives when they’re happening
    Back then I thought “well there'll be other days”
    I didn’t realize that was the only day
    https://www.youtube.com/watch?v=Y9yrupye7B0

    There's sometimes a buggy.
    How many drivers does a buggy have?
    One.
    So let's just say I'm drivin' this buggy...
    and if you fix your attitude you can ride along with me.
    http://www.youtube.com/watch?v=GekiIMh4ZkM

  7. #7
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    The factory built wheels with 7850 hubs use straight pull spokes and have a different flange configuration than the regular 7850 hubs. The 7850 hubs were a modification to the 7800 Dura Ace hub which only took DA cassettes. The 7850 uses the older DA freehub style which takes 8/9/10 speed. The Wheels website isn't clear as you pointed out and they haven't responded to my question.
    I guess I will have to try it out. A $150 cassette is still cheaper than more rear wheels.

  8. #8
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    This issue was discussed endlessly when Shimano came out with 11-speed (catching up with Campy again ).

    Seriously, if Shimano could have fitted 11 speeds on their 10-speed hubs, don't you think they would have done it?

    Google will help.
    We just don’t realize the most significant moments of our lives when they’re happening
    Back then I thought “well there'll be other days”
    I didn’t realize that was the only day
    https://www.youtube.com/watch?v=Y9yrupye7B0

    There's sometimes a buggy.
    How many drivers does a buggy have?
    One.
    So let's just say I'm drivin' this buggy...
    and if you fix your attitude you can ride along with me.
    http://www.youtube.com/watch?v=GekiIMh4ZkM

  9. #9
    Big is relative
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    I've used their conversion cassettes before, shifted just fine. No reason to believe they didn't do their homework on this as well.

    Campy 11 speed cassette conversion (11-27t)
    Retired sailor

  10. #10
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    @big, is your hub an actual Shimano branded 10-speed, or something else?

    Run 11-speed Campagnolo spacing on Shimano 8/9/10-speed compatible wheelsets.
    Once again, in hubs there is a critical difference between "Shimano" and "Shimano compatible".

    From Excel Sports description:

    Please note: this will not work on Chris King hubs or other aftermarket hubs with unusually high or low flanges. Also will not work on Shimano 10-speed only hubs or wheels.
    Wheels Manufacturing 11 Speed Cassette - Cassettes - Excel Sports
    Last edited by bikerjulio; 06-20-2016 at 01:56 AM.
    We just don’t realize the most significant moments of our lives when they’re happening
    Back then I thought “well there'll be other days”
    I didn’t realize that was the only day
    https://www.youtube.com/watch?v=Y9yrupye7B0

    There's sometimes a buggy.
    How many drivers does a buggy have?
    One.
    So let's just say I'm drivin' this buggy...
    and if you fix your attitude you can ride along with me.
    http://www.youtube.com/watch?v=GekiIMh4ZkM

  11. #11
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    Based on the Excel sports answer I received on the phone and this Converting Shimano 7900/7850 wheelsets to 11 speed (a guide) - Page 3 - Weight Weenies
    I will try it out in the next few weeks and let you know.

  12. #12
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    [QUOTE=bikerjulio;5040693]@big, is your hub an actual Shimano branded 10

    I ran their 10 speed campy spaced cassettes on a Phil Wood and a 7400 DA hub. They use 105 or Ultegra cogs with different spacers so they won't fit on a 10 speed specific (Dura Ace) hub that was made for a few years. That has to do with the splines on the freehub. A regular shimano 8-10 freehub will work with one of their hubs as long as there isn't interference with the hub flange.
    Retired sailor

  13. #13
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    Just finished installing DA 9000 on my bike including DA hubs. I had a pair of DA7850
    10-speed hubs laced to HED Belgiums that I wanted to use. Since the the Wheels Mfg. website said get Campy 11 speed on Shimano and Leonard Zinn said in Velonews that all 11-speeds (Campy, Shimano, SRAM) are compatible, I thought this should work. It does. The Wheels Accelerator 11 speed conversion cassette changed my DA 7850 10 speed hub to 11 speed. There is no need for any adjustment when switching wheels. I did use 2 of the included .3 mm spacers to get the spacing just right.

  14. #14
    Cpark
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    I had it done on 2 rear wheels about 2 years ago.
    I sent the wheels to Jeremy who used to own Alchemy, and he did it for me.
    Those hubs are awesome.

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