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Thread: aero rims

  1. #1
    Super Member pklove's Avatar
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    aero rims

    Why are deep v's the most raved about rims? There seem to be 3 choices for aero rims that seem reasonable, but it seems everyone flocks to the v's and I really don't see what the extreme differences are.

    I'm not knocking deep v's. I just don't see the big difference besides the color offerings. Is that it?

    alex da-28s
    sun swifts
    deep v's

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    Senior Member thenathanator's Avatar
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    that, and they have Deeep Vs on them.

    I actually have no clue....
    Yes, I can ride it.
    No, it doesn't hurt.
    No, someone didn't steal the other wheel.
    No, I can't do a wheelie.

    Being a unicyclist can suck sometimes.

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    Skidmaster teadoggg's Avatar
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    i'm pretty sure the aforementioned rims aren't aero. they are strong though, which is one of the main appeals.

    i think the most shallow "deep" section rim there is is that provides an aerodynamic advantage is the cxp30.

  4. #4
    Me talk pretty one day. eyefloater's Avatar
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    Also add:
    mavic cxp33s

    Re: Deep V's:

    Colour Options: they come in a ton of different colors (silver, white, black, red, yellow, green, gold, pink, etc.)
    Drilling Options: 36 / 32 / 28 / custom, or none if you want to arrange custom drilling yourself.
    Strength: take a box rim (no spokes) and press - it'll flex. Try the same w/ any V rim.
    Price: Deep V's used to be cheap before they really caught on. Now they're more expensive, but still affordable.
    Aero Benefits: Placebo, unless you're maintaining 30Mph plus.

    Hipster Appeal: Take any of the structural benefits listed above and toss them out the window. Then go obsessive compulsive with the aesthetic options and you have your answer.

  5. #5
    Retrogrouch in Training bostontrevor's Avatar
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    Actually, my understanding is that all of those low-profile aero rims are too shallow to be useful at all. The arbitrary number I've heard tossed about is 28mm deep-section to actually realize any benefits.

    I have no evidence of the veracity of that statement.

    edit: hmm.. it looks like the aero section of the deep-v is close to 28, so maybe it meets the above hearsay standard. Whatever.

  6. #6
    Fear the banana YellowFixedGear's Avatar
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    I like them because
    1) They wont **** you on cost.
    2) They hold up well for city riding.
    3) the colors..

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    The shallow v's work just as well as those that are deep, I have tested that theory on my own and have found that shallow rims makes a difference. A friend of mine has deep v's and him and I both took off at the same time coasting down the crest hwy. I had Open Pro rims as we coasted down the hwy he just pulled away from to 100 feet ahead of me easily. We then repeated the same thing this time I had Velocity Aerodead rims laced with radial lacing. We stayed at the same speed pretty much. What a difference.

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    haha, wa...ay too many variables for me to think that test has any credibility.

  9. #9
    Senior Member mattface's Avatar
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    Quote Originally Posted by rmwun54
    The shallow v's work just as well as those that are deep, I have tested that theory on my own and have found that shallow rims makes a difference. A friend of mine has deep v's and him and I both took off at the same time coasting down the crest hwy. I had Open Pro rims as we coasted down the hwy he just pulled away from to 100 feet ahead of me easily. We then repeated the same thing this time I had Velocity Aerodead rims laced with radial lacing. We stayed at the same speed pretty much. What a difference.
    Put some more air in your tires. Friction from soft tires will make a more marked difference than wind resistance.Tire width as well.

  10. #10
    Frankly, Mr. Shankly absntr's Avatar
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    From what I have read, a rim has to be at least 35mm deep to provide some, if at all any, aero benefit. It's really pretty neglible at that size. However, I do feel the wheel in a crosswind more with deep V's.

    The Campy Atlanta's and Shamals, and the FIR Super Rialto's were all at least or above 35mm deep.

    If you really want some of the aero benefit, you should look at Zipp rims.




  11. #11
    Senior Member IchbinJay's Avatar
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    I blame fixedgeargallery.net for the current Velocity rim trend. If gets ya riding though, I don't see the harm.
    For the best riding south of Boston:
    South Shore Outdoors

  12. #12
    cab horn
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    Quote Originally Posted by bostontrevor
    Actually, my understanding is that all of those low-profile aero rims are too shallow to be useful at all. The arbitrary number I've heard tossed about is 28mm deep-section to actually realize any benefits.

    I have no evidence of the veracity of that statement.

    edit: hmm.. it looks like the aero section of the deep-v is close to 28, so maybe it meets the above hearsay standard. Whatever.
    Its closer to 35-40mm.

  13. #13
    Retrogrouch in Training bostontrevor's Avatar
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    I heard 52.3.

  14. #14
    blacksheep the blemish
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    Quote Originally Posted by rmwun54
    The shallow v's work just as well as those that are deep, I have tested that theory on my own and have found that shallow rims makes a difference. A friend of mine has deep v's and him and I both took off at the same time coasting down the crest hwy. I had Open Pro rims as we coasted down the hwy he just pulled away from to 100 feet ahead of me easily. We then repeated the same thing this time I had Velocity Aerodead rims laced with radial lacing. We stayed at the same speed pretty much. What a difference.
    You should try and submit that experiment to Science, I'm sure they'd agree.

  15. #15
    information sponge
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    I like Deep-V's 'cuz they're cheap, especially the MTB version, they come in snazzy colors, and I think they're about the toughest thing out for the money. Also, you can just barely still use a regular presta valve (with a PV adaptor). I don't like Alex products at all, and I've not used the Sun rims. I wouldn't be opposed to the Sun rims, but the Velocity rims have held up so well for me that I'd rather just stick with 'em.
    Philosophy and feelings don't change the laws of physics

  16. #16
    Senior Member eddiebrannan's Avatar
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    Quote Originally Posted by bostontrevor
    I heard 52.3.
    700

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