That’s because you’re not about to start moonlighting as:
dj DD - techno/electronic music god spinning tunes with undertones of metal
In the AH2 I’ll be the second coming of Daft Punk
I’m tempted to buy one and race my $500 bike in just a speedo.
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We really need a laugh button thing!! 
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In my case tweaking my position saved me 12 watts and the RP Wingdream saved another 9 (compared to the Smith Jetstream I have been using). This would roughly mean 8 minutes faster over an Ironman. I’m so glad the Aerohead 2 was the slowest helmet for me!
It was really great doing all the aero testing, very informative and money well spent!
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Draft Punk
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This is where optimising aerodynamics becomes tricky. Everything can get caught in a loop of chicken or the egg.
Maybe the Aerohead 2 could be faster for you in a different position. Maybe one helmet work well with short reach, maybe another with long reach. Maybe it is also effected by stack, width, clothing, bottle placement, … the list is never ending. Repeating the testing in a different order could lead to different outcomes.
Sounds like you have got in a good place though. Now to put it to good use 
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Thanks! Mallorca 70.3 in two weeks, so let’s see how the changes work out there.
And I concur, this was nothing more than a first iteration of finding improvement with which I’m happy. I know this is not the one and only perfect position for me, which also makes the process more fun.
100% agreed and this is why aero optimization is an iterative process, not a “one and done”.
You get in a decent fit, you do an aero session to dial fit and make equipment choices, you ride in training with the occasional ‘aero training ride’, you race, you analyze the race from an aero perspective and you adjust. Then you repeat.
@Maca944 after your race, send me your file, I’ll see if we can extract insight.
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From the Fusion Sportswear IG channel (FUSION on Instagram: "Extraordinary testing at the wind tunnel yesterday with @jonasvingegaard and @teamvisma_leaseabike 🐝🌪️") it became clear to me that the AH2 has been designed for one person: Jonas Vingegaard. The way the helmet blends in with his shoulders is just scarry.
I confuse him and Jonas
You both have the video 
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This helmet is a godsend for those who need to wear prescription glasses during bike. There is so much space and air inside, I can wear my RX w/o any headache, nausea etc… Compared to other helmet option for Rx, either Evade or any aero road, WD is such a no brainer.
I think this helmet is becoming the “if you aren’t going to test, this is a safe bet” helmet
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I used mine for the first time today. I am not sure how fast it is because I have not done any comparisons yet and it rained for half of my ride today but it is very comfortable. A lot more comfortable than the Wing and slightly better than the Tempor. The visor is great.
I could see the front of it but it didn’t really impact my view and I have a pretty low front position.
I am very happy with it. I will be doing a little bit of testing against the Wing just for fun but I will be racing with it just based on comfort and visibility
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IMO that would need a lot more testing vs the Mistral. But it’s certainly up there.
Ya, I’ve tested the Mistral a few times. It does well, but never the best. (3 pros)
Beat by the Tempor twice and the Ekoi once. 2 tunnel tests, 1 road test.
Of course this is all very individual, and also shows the top helmets are not way ahead of each other.
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AH2 was designed for tight and low. For those TTer with good positions, this can be a winner. If your head is up above your shoulders, it was not designed for that. We have been seeing this for awhile, the Mistral, preforms best when you are looking down and the top of the helmet is facing forward. The trend is, we are seeing products that are designed for different positions, body types and speeds. One size does not fit all.
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@desert_dude and @marcag
I have done some field testing with my new WD this weekend and have found something interesting. I have tested it against my old LG P-09 that has consistently been fastest for me. Better than the Aerohead and the Kask Mistral.
When I tested this weekend I did several passes each at 200w, 230w and 260w. The interesting thing was that at 200w the P-09 was faster than the WD, at 230w they were the same and at 260w the WD was faster. Is this something you see often in testing? Any thoughts on why? Since I now own both; how can I exploit this information? Any further testing I should do to confirm which is best or possibly other optimizations I can try?
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Interesting
What speeds were you going at those 3 different wattages?
What did your protocol look like ?
Were you using a sensor ?
I was testing two elements: new tri-suit and new helmet
Testing protocol:
-Measuiring segment out and back, ca. 90 seconds each way, straight and flat. No traffic.
-Each set-up run three times out and back; 200w, 230w and 260w
- Old suit + old helmet
- Old suit + new helmet
- New suit + new helmet
- New suit + old helmet
-This all took about one hour. Ideally, I should have re-run the first set-up at the end to verify that conditions had not changed.
Result:
-New suit better than the old suit by a clear margin. Average 9 watts saved.
-New helmet faster than old helmet at 42-43 kph (3-4 watts), but slower than old helmet at 39-40 kph (3-4 watts).
Testing with no aero sensor and there is a decent error margin for each run. However, each set-up 1-4 are well behaved and the three points plot on a straight line. Note that the slope of the P-09 lines (orange) are different than the slope of the WingDream lines (green). In hindsight it would be nice to have a point at 300w for each set to see if the gap grows proportionally.
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