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Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

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Old 11-03-05, 11:13 PM   #1
pklove
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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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Old 11-03-05, 11:15 PM   #2
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that, and they have Deeep Vs on them.

I actually have no clue....
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Old 11-03-05, 11:18 PM   #3
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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.
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Old 11-03-05, 11:25 PM   #4
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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.
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Old 11-03-05, 11:28 PM   #5
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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.
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Old 11-03-05, 11:29 PM   #6
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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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Old 11-04-05, 12:36 AM   #7
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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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Old 11-04-05, 12:47 AM   #8
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haha, wa...ay too many variables for me to think that test has any credibility.
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Old 11-04-05, 05:50 AM   #9
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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.
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Old 11-04-05, 08:11 AM   #10
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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.



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Old 11-04-05, 08:33 AM   #11
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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.
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Old 11-04-05, 02:59 PM   #12
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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.
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Old 11-04-05, 05:35 PM   #13
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I heard 52.3.
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Old 11-04-05, 07:31 PM   #14
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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.
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Old 11-04-05, 08:34 PM   #15
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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.
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Old 11-04-05, 09:49 PM   #16
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Quote:
Originally Posted by bostontrevor
I heard 52.3.
700
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