By Dominic Lazzaretto
This is my first (and maybe only) mini-review. I’m calling it a mini-review because I’m trying to keep myself to 500 words or less. I’m fairly certain I’ll fail miserably, but let’s give it a go anyway (this part doesn’t count in the 500 words, by the way).And….go!Rocket Science Sports has applied its hyper-technical approach to designing a water bottle. The result is a water bottle with dimples similar to those on a golf ball. The idea is that the specific size, shape, and spacing of the dimples reduces drag. Now, we were originally told that smooth things have less drag than rough things. It turns out that this isn’t quite correct. Dimpled round things apparently have less overall drag than smooth round things. See the bottom of this review for a more scientific discussion of the whole dimple thing.
Nowhere in their advertising does RSS tell you how much of an advantage the reduced drag is, but I’d have to figure that it’s a small number (smaller than say the difference between my current weight and the five pounds around my midsection that should be leg muscle).OK, so you’ve got dimples. Now what? Well, near as I can tell, the most important thing in a water bottle is still how well it holds water. I’ve had far too many bottles that leaked when placed on their sides, dripped when you were drinking, and let water come out of the sides of the nozzle instead of the center of it. If you can’t drink out of it, you’d be better off saving even more drag by not having a water bottle at all.(Are you nervous? I’m at 227 words already)
Dimpled Water Bottle
Rocket Science Sports(www.rocketsciencesports.com)
A very functional little water bottle. It would be nicer if it came in a larger size.
So how does the RSS Water Bottle fare? Quite well, actually. In the five months I’ve used it, it hasn’t leaked, dripped, or clogged. When it sits on its side in my car, there is never a wet spot left behind. When I drink from it, the liquids come out in a steady, even stream through the center of the nozzle.
Once again, Al Davis would love this color combo.
The screw cap goes on a bit lopsided…
…but eventually snaps into place nicely.
GOT DIMPLES™ Technology
(excerpted from the rocketsciencesports.com website) What separates our water bottle from the rest is its unique aerodynamic design - modeled after the golf ball to minimize drag while cycling. The majority of drag associated with water bottles results from the separation of airflow causing what's known as pressure drag. Air flowing past a traditional smooth exterior water bottle separates quickly resulting in a high pressure drag.However, with our dimpled water bottle, airflow separation is delayed. This results in a smaller airflow separation region when compared to traditional water bottle designs. The dimples actually add more kinetic energy to the airflow forcing it to remain attached longer - ultimately reducing pressure drag.
A Note on the Author: Dominic Lazzaretto has completed twelve triathlons (kind of near the front of the age grouper pack) and has competed in dozens of road running races, mountain bike races, and road cycling events. He is one of the official gear reviewers for BeginnerTriathlete.com.