Why exclude rims narrower than 22mm? Do they, at that width, abruptly become so inefficient that they cannot be considered 'aero'?

Surely you have to include all non-box section rims, regards of width, to get the full picture?

Nice list. Thanks!

_________________
Current: Colnago CX Zero Di2 Disc, Cannondale F29 carbon3
Previous: Scott Plasma 3 premium, Parlee Z3SL, Parlee Z4, Argon18 E112, TREK TTX7.0, S-Works Transition, Pinarello F4:13

_________________
http://www.zencyclery.com

Any Chance the Kinlin XR-300 rim is built onto the Komponentix Aero wheelset tested here? they call the rim the Halo Mercury, but it has the same dimensions and claimed weight as the XR-300.

_________________
I write the weightweenies blog, hope you like it

My SwiftCarbon Ultravox

My Velocite Selene

Disclosure: I'm sponsored by Velocite, but I do give my honest opinion about them (I'm endorsed to race their bikes, not say nice things about them)

I don't think that deep narrow wheels are not more aero than box section, but they truly struggle standing up to today's wider wheels. This chart for instance shows a lot of the new wider wheels such as FC 808, Bontrager 7 D3, Mavic's new CXR and their CC80; as well as a Hed Jet 90(20mm brake track) with a 20mm tire.

http://www.slowtwitch.com/articles/imag ... raph_2.jpg

As you can see, the only place that the Jet 90 is competitive is at 0 degrees yaw; at 5 is close and from there out it really isn't with the pack except on the non-drive side it doesn't stall until later than some of the competition.

To give you an idea of how this all compares. I've seen data on the PX 101 rim, where its faster than the old 404 shape over a range of yaw from 0-20. Nowadays, we're seeing the 303 be quite a bit faster than the old 404.

So a well designed 44mm rim can be faster than a non-designed narrow 100mm rim.

Boy those D3's are slippery!

I wrote that post prior to the slow twitch test linked above. Interesting results!

One note also is that the Enve 6.7 clinchers data has also been published/updated on their website. I estimate they are similar to the Bontrager 7 clinchers (depending on tire).

Just saw the post on the Flo 30 wheels. Be interesting to put those head to head with the 3t accelero.

Cheers!

_________________
Toys-R-Us