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  1. #1
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    Best profile wheel for racing (hills/flatish)

    Any suggestions for wheel profile for racing hills?

    I am guessing a lightweight tubular 20-38mm depth, maybe 23 or 25c?!

    What about for flatish racing courses?

    50mm or 60mm deep clincher?

    Would 80mm be too much?
    Last edited by Greatwhite7; 3 Weeks Ago at 08:45 PM.

  2. #2
    CX'er
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    Generally you do lower depth and lightweight for climb races and deeper for flat races. 40-60mm seems to be the average for people that only want one set of carbon aero wheels.

    80mm isn't too much if it's not windy.

    23 vs 25 depends on your weight and your preferences but 25mm is becoming the new standard.

    I'm very much not a fan of carbon clinchers for extended descents. Truthfully, I prefer aluminum rims for hilly races. If you have disc brakes then overheating isn't a concern and run carbon all you like.

    There are a lot of threads on the topic so if you do a search you should come up with a lot of content.

  3. #3
    changingleaf
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    I like the Boyd 28mm tubular carbon rim for a lightweight wheelset.

    I like the Enve 7.8 SES for an aero flatter course wheelset.

    Don't forget the importance of quality hubs!

  4. #4
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    Quote Originally Posted by bikerector View Post
    Generally you do lower depth and lightweight for climb races and deeper for flat races. 40-60mm seems to be the average for people that only want one set of carbon aero wheels.

    80mm isn't too much if it's not windy.
    Good to know, thanks.
    Our hills here are not that long, I dont think overheating will be that much of an issue.

  5. #5
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    Quote Originally Posted by changingleaf View Post
    Don't forget the importance of quality hubs!
    I am going to try chinese wheels from reputable dealers.
    They use Novatec or Powerway hubs.
    Are they ok?

  6. #6
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    I have a set of Chinese 60 clinchers with Novatech ultralight hubs. Many miles no problems and smooth operation. The freehub was quite loud at first replacing the lube with a good oil reduced the noise.

  7. #7
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    Quote Originally Posted by A3ro_AF View Post
    The freehub was quite loud at first replacing the lube with a good oil reduced the noise.
    Where does the lube go?

    As far as I knew hubs had grease in the bearings, but no idea where the lube is.

  8. #8
    Forever a Student
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    Quote Originally Posted by Greatwhite7 View Post
    Where does the lube go?

    As far as I knew hubs had grease in the bearings, but no idea where the lube is.
    When you coast, the pedals don't move. But when you pedal, the hub engages and the drivetrain goes.

    That mechanism that allows you to coast is where the oil/grease/lube goes.

    It's usually a system of spring loaded pawls and a ratchet ring.

    So to re-lube, you have to pull off the freehub (the cassette) and clean out the lube in there and add new stuff.

    use a torque wrench

  9. #9
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    IME the manufacturer plays a rather large role in this. Without saying my opinion on the brand I have found some wheels at 70mm handle the same winds better than other wheels at 50mm. In a super broad sense I've found 50-ishmm can handle any wind about as good as anything. Once deeper than that some wheels get super twitchy while others remain very stable.

  10. #10
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    Quote Originally Posted by MMsRepBike View Post
    .

    So to re-lube, you have to pull off the freehub (the cassette) and clean out the lube in there and add new stuff.
    Thanks for that, will try it when they arrive.

  11. #11
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    Quote Originally Posted by woodys737 View Post
    In a super broad sense I've found 50-ishmm can handle any wind about as good as anything. Once deeper than that some wheels get super twitchy while others remain very stable.
    I ordered a pair of 50mm from a place in China.

    Sapim spokes, Novatec hub, 1487g for the set, and only about $650AU delivered.
    If they are good I might buy some lower profile for hills and maybe deeper for time trials.

    I am not super serious, so am going with 2-3 sets of chinese cheaper wheels over 1 set of Zipps or other.

    Should be good to see how they perform.

    Thanks for the help.

  12. #12
    'brifter' is a lame word.
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    It's not just how deep the section of the rim is. It's all about the shape. Companies like Zipp and Enve spend a lot of time in the wind tunnel and end up being able to make rims that are deep but handle in cross wind like a shallower rim. That said Zipp recommended the 303 for our girls for every race except flat criteriums. For those races we had a couple pair of 454 NSW that I'd use for the fastest girls. They did use 808/disc for pretty much all but the windiest time trials.

    I kinda doubt that the chinese rim makers spend any time in a wind tunnel w/ anyone that would know what to do w/ the information they did collect. Hopefully the shape is a decent enough copy of something that does work so they perform well.
    I work for some bike racers
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  13. #13
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    Quote Originally Posted by cxwrench View Post
    Hopefully the shape is a decent enough copy of something that does work so they perform well.
    I will test them in 2-3 weeks and report back.

    Close enough will do. I am not that serious anymore so $600 seems a better investment than $2000.
    Last edited by Greatwhite7; 3 Weeks Ago at 11:23 PM.

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