I want wind tunnel data.

That's gotta save what, half a watt?

Everything saves 2 minutes over a 40k TT...

I wonder if that'll fit in the valve well of a Hed3...

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Some are born to move the world to live their fantasies...

https://triomultisport.com/
http://www.mjolnircycles.com/

From the website:


How much more top speed can I potentially get?
Depending upon conditions, wheel configuration, vehicle speed limiting devices, vehicle speed and other factors you could experience up to 0.02 MPH higher top speed at 150 MPH. At extreme high speeds of 200 MPH and above, it is possible you could achieve up to 0.03 MPH higher top speed depending on configuration

That is hilarious.

If that is real they are geniuses because sadly, instead of working to become better cyclists, people will purchase them to try to buy speed.

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"Just don’t abandon everything you’ve ever learned because of something someone said on the internet." - Eric McGinnis

Well, they don't quote watts, but in "In straight line wind tunnel testing (called onset flow), AEROcaps reduced the drag force by about 30% compared to round valve caps."

Of course, they don't really say there that traditional round valve caps are responsible for a negligible amount of drag anyway ... but a bit further down, they go into more detail: "you could experience up to 0.02 MPH higher top speed at 150 MPH."

So, scaling down for typical bike speeds, that would probably be something like 0.0006 mph at 25 mph. Or roughly 0.0795348 seconds over 40 km. I think we can safely round that to approximately 0 seconds over your typical 40 km time trial.


And that's the best case scenario.

At the least they could have made an airfoil fairing for the entire valve stem, ala TorHans' straw mast. That might have netted us a second at least over 40k.

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The plural of anecdote is not data. :-)
- Andrew Coggan

I know, this is confusing me why they did not.

I bought this and my FTP went up 5% overnight

Why did I bother trying to measure drag more accurately, when I just needed these things?!

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Developing aero, fit and other fun stuff at Red is Faster

Prediction: this will be normal/regular equipment in 5 years. :D

No, but I can see a market for a simpler valve that doesn't need to stick proud of the rim to use. A miniature air hose type attachment, with the NR valve inside.

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Developing aero, fit and other fun stuff at Red is Faster