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Old 02-16-2017, 05:36 AM   #11 (permalink)
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What a poor value. You don't even get teardrop sleeves for the stems.

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Old 02-16-2017, 01:52 PM   #12 (permalink)
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It looks similar to my wheel pant fer Dark Aero!
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Old 02-16-2017, 05:09 PM   #13 (permalink)
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Of course, the bicycle racing aerodynamic obsessives have been using them for some time now. Aerodynamic Applications LLC - AEROcap Presta Race (BICYCLE), Includes 2 caps, **sale $6.99** (reg. $

https://cdn.thingiverse.com/renders/...w_featured.jpg

https://www.reynoldscycling.com/shop...ory&p_item=743

http://www.performanceplusconnection.com/Item/AAMC_2

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Old 02-17-2017, 10:31 PM   #14 (permalink)
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That Reynolds plug is different; it fits into a deep-section rim like so, with a valve extender sticking out of it:



The sheer ridiculousness of these caps lies in the fact that their drag reduction, if any, will be so infinitesimally small as to be not worth even the $6.99. There are far easier ways to save significant wattage on a bike, and far more effective ways to streamline a car.

Also, I've been racing bikes for more than a decade, and I've never seen anyone using these.
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Old 02-19-2017, 12:10 AM   #15 (permalink)
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A simple recumbent will cut their drag in half.
Why not just do the obvious ?
And as far as the caps for the car ?...a complete waste, since they are within a pocket of turbulent air !
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Old 03-03-2017, 10:54 PM   #16 (permalink)
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There is an interesting article in the FAQ section on the Mercedes B class air fences.
Looks like it's a skirt to funnel air away from the wheel arch.
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Old 03-04-2017, 12:47 PM   #17 (permalink)
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I'll make my own that includes the stem and test them on my TT bike.
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Old 03-23-2017, 07:35 AM   #18 (permalink)
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Quote:
Originally Posted by teoman View Post
7 usd. Wonder how long it will take for your return of investment.
LOL...no less than 10 years I guess
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Old 03-23-2017, 07:42 AM   #19 (permalink)
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Maybe at the mileage I drive, even more years for regular folks.
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Old 03-23-2017, 04:19 PM   #20 (permalink)
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Quote:
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7 usd. Wonder how long it will take for your return of investment.
If you can draw it from a Swiss million euro bank account with negative interest rate, it would even work towards that while parked.

I'd be happy to do that, if that would make me have such an account

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