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This goal of this experiment is to identify:
Links to Containers:
Genuine Joe: http://amzn.to/2zgDiuJ
Stanley Classic: http://amzn.to/2ziOhUE
Ozark Trail: http://amzn.to/2zmMxf5
These containers are large enough to store at least 8 cups of coffee. We have two:
These containers vary in size, but all are designed to allow one to use as portable cups from which to drink hot or cold liquids. There are four in this test:
These containers serve as controls in the experiment. We have two controls:
Initial Heat Loss
Since all containers started at room temperature and the water started at boiling, the water will immediately transfer some heat to the vessel as soon as the water comes into contact with the surface. The first data point in the chart, measured at 2:20 PM, reflects this initial heat loss. It does include a very small time lapse – just enough necessary to get all the containers topped off with boiling water and temperatures measured.
Gradual Heat Loss
I measured the temperature of the water every half hour for three and a half hours. During this time, a clear pattern emerged. The large containers (Genuine Joe and Stanley Classic), which have the best storage volume to non-insulated surface area ratio, did the best.
The second group was the vacuum insulated cup group (Yeti, Ozark Trail, Starbucks). This group of containers all did quite well, and roughly equal to each other.
The third group consist of just the Tervis. It is insulted, but not as well as the vaccum insulated models. The graph reflects this.
The control groups cooled the quickest, with the Hardee’s cup maintaining slightly higher temperatures throughout the test. This is expected since it is sort of insulated.
Final Heat Loss
After 3.5 hours, I only took two more readings. The first of these was at 7:50 PM, and the final was the next morning at 6:40 AM. While the test was not surprising in any way, the final reading at 6:40 AM made it abundantly clear which container is the best.
The device that kept the water hottest for the longest period of time was the Stanley Classic Vacuum Bottle. I have had this thermos for over twenty years, and I know it will last and can handle some abuse.
The best container for drinking directly out of is the Ozark Trail. It performed about the same as the Yeti and the Starbucks, but cost about a third of the other two.
I’d also like to give an honorable mention to the Tervis. It did not perform as well as the vacuum insulated models in this test, but in my experience, it works well. Plus, it is the only drinking container that is made in the USA.
The Garmin eTrex 20 is an entry level GPS unit designed to meet the basic location tracking needs of the average hiker. It is small, lightweight, and reliable. I have had this unit long enough that I don't remember when I purchased it, but I know I used in when I took my family to Yellowstone National Park in 2013.
Primary Use Case
The eTrex 20 has a number of features. However, the feature set I use is very focused on situational awareness on the trail. With that in mind, I'll start by describing my standard use case, and then go into some of the other features.
When I get to the trailhead, I go through a series of steps to orient myself and prepare for the navigation task. The standard day hike use case goes something like this:
Garmin has built a rugged device that has withstood numerous falls to the ground. I did manage to scratch the screen when it slid across some gravel on a hill, but even that was minor. The integrated rubber around the edges of the device provide drop protection and also make it easy to grip, even with a wet or cold hand.
Buttons on the sides of the device offer a convenient way to provide input. There is a navigation stick on the front of the device that enables you to scroll through the icons. A USB port on the back provides the ability to retrieve data using a PC or a Mac. The port is protected by a rubber cover that keeps out dirt and grime.
I typically only use this device to keep track of where I am and how far I have gone. However, the eTrex 20 provides a feature set far beyond my standard use. Major features include:
I've had my eTrex 20 for at least four years. I've taken it on a variety of hiking adventures. It has consistently performed well for my needs. I imagine the eTrex 20x is even better. If you'd like to learn more, click here to see the Garmin eTrex 20x on amazon.com or visit the garmin website at www.garmin.com.