QR Carbonaero (or variant); blackwell time bandit; Argos.

How much time you think you will save by changing forks?.....

The main attribute for a fork paired with an H3 is a wide fork crown. The spokes of the H3 create notable turbulence as they pass through the fork blades and "clog" the slot. The result is significant energy going into shear forces. This only really matters at the top of the fork, since all forks widen toward the hub, but the H3 spokes stay the same width.

The Blackwell/Oval forks that have slots to adjust pressure between the blades would also be good choices.

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ECMGN Therapy Silicon Valley:
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Check out Oval's R900 slotted carbon road fork. The slotted design seems to suck out turbulence. It's a stiff fork though.

Do you have the data for this?

Nick_Barkley wrote:

Do you have the data for this?

Trying to dig it up. We first noticed this when the wheels that tested the fastest in the tunnel weren't necessarily the fastest when tested on a bike (this is early '90s, so it's all 0deg. yaw). There were wheels like the Zipp3000 that were actually worse than a training wheel once in the fork. Some really old steel forks actually tested quite well due to the wide crown used for braising lessening the fork leg/spoke interference.


Surprisingly, here is a CFD simulation that claims little difference between forks for a H3: http://www.acusim.com/..._1237_081611_web.pdf .
It's CFD, not tunnel, but interesting none the less (Zipp now does most of it's design via CFD, and uses tunnel to validate...the software's gotten to that point).

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ECMGN Therapy Silicon Valley:
Depression, Neurocognitive problems, Dementias (Testing and Evaluation), Trauma and PTSD, Traumatic Brain Injury (TBI)

Thanks for posting this. I wonder what an updated Trispoke with a toroidal rim profile and updated blades could do. Even having a similar performance to the top of the line wheels now would be nice if that meant no valve extenders.

Toroidal is the old busted man =)
It probably IS toroidal.

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Kat Hunter reports on the San Dimas Stage Race from inside the GC winning team
Aeroweenie.com -Compendium of Aero Data and Knowledge
Freelance sports & outdoors writer Kathryn Hunter

Isn't the Hed3 rim shape more of a deep V? What I meant was more Firecrest-esque or shapes similar to the the Hed Stinger, Bontrager D3, Enve Smart rims.

I'd say it splits the diference between a deep V and toroidal. Its not a sharp V like the first get zipps or lightweights.

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Styrrell

source: http://www.acusim.com/...2010-1431_MNGodo.pdf

From Zipp:





From: Bontrager




From Flo:

It'd also be fun to see what a trispoke could do updated not only with a more toroidal design, but with a 23mm rim.

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The point is, ladies and gentleman, that speed, for lack of a better word, is good. Speed is right, Speed works. Speed clarifies, cuts through, and captures the essence of the evolutionary spirit.

At the very least the widest point on a H3 tubular is narrower than the widest point of the carbon rim. The curve of the carbon rim also looks more gradual, but I can't be sure of that.

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Styrrell

I run a H3 Deep on the rear, which has a Jet 90 section bonded on to it. The effect this has is to widen the overall profile. I'm not sure what the effect of this is - some bright spark might be able to say - but the 22mm tyre that I run on it (R4 aero) seems to blend in perfectly with the shape. If I put the same tyre on my standard H3 rear then the tyre is clearly wider, so the Deep version does have a different overall profile (even though the tyre bed and rim are the same).

The fastest rims (at higher yaw) seem to be even wider than 23mm.

At their widest points, yes, but I was just referring to the tire bead portion.

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The point is, ladies and gentleman, that speed, for lack of a better word, is good. Speed is right, Speed works. Speed clarifies, cuts through, and captures the essence of the evolutionary spirit.

Hed Stinger 9: 28mm

Zipp Firecrest 808: 26.53mm

Bontrager Aeolus 9 D3: 27mm

I'm almost positive I've seen multiple times the old Felt Carbon Fork was one of the best with a trispoke.
But yes, an Argos/Time Bandit / QR would probably be quite good too. Maybe the old PD fork as well.

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My Blog - http://leegoocrap.blogspot.com

That H3 rendering is not much of an approximation of the actual rim profile.

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Andy Tetmeyer (I work at HED)

Is that tire width next to the wheel title in the table?

Yeah, under closer inspection the Hed 3 rim looks closer to the "Early toroidal rim"

So many shapes!

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Kat Hunter reports on the San Dimas Stage Race from inside the GC winning team
Aeroweenie.com -Compendium of Aero Data and Knowledge
Freelance sports & outdoors writer Kathryn Hunter

Yes