Profile Aero bottle versus rear water bottle

I love my Profile design AeroDrink. I like being able to hydrate and stay fully aero. I read recently that the straw causes a surprising amount of wind resistance.

Curious to thoughts between this setup and versus using a hydrotail or regular mounted water bottle but coming out of aero position to get a drink.

Sitting up and reaching for a rear mounted bottle probably costs you more time than having the straw sticking up. Plus it helps you remember to drink more often, which for me is a good thing.

Yeah but sitting up is only a momentary thing. The straw is there all the time.

I’d love to see it quantified how much resistance the straw causes. Didn’t John Cobb once determine that the bottles behind the seat were one of the worst aerodynamic choices you could make? I believe he also determined that the front-mounted profiel bottle itself was actually an aerodynamic improvement over no bottle, but I might recall that incorrectly. Those two factors might make the cost of the straw negligible. But I haven’t seen any numbers.

The “technologistas” are going to disagree, but check out the pic below. Straw and race number flapping in the wind, not to mention a hydrotail and about 3 pounds of duct tape. And he averaged 26mph for 112 miles. So I think you’ll be ok.

http://i44.tinypic.com/2ewcdjp.jpg

IF he was on a cervelo his average would of been 30+
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Didn’t John Cobb once determine that the bottles behind the seat were one of the worst aerodynamic choices you could make?

John actually designed a new rear bottle carrier, which I’ve got…the Quick Draw. Take a look, as it’s very nice and they have windtunnel video on the ISM site to show the flow…

Where is the quick draw? I don’t see it on the CobbCycling web site.

Found the Nathan Thermal Quickdraw water bottle. Is this what you were talking about?

The Quick Draw:
http://www.ismseat.com/products_quickdraw.htm
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ISM site…

Great product!