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Tim Hawthorne (tim_hawthorne) - BPL Premium Member

My Locale Southwest
About Me Backpacker, hiker and climber has lived in and traveled to many parts of the world as an engineer.
CityTucson
StateArizona
CountryUSA

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All Forum Posts by Tim Hawthorne

Showing 1 - 10 of 14 | Page: 1 2
 

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Comments on Stephenson 2C tent review
Nice Article so far. I have been using the 2R and 2X for more than 25 years and they are still in good nick. I like the 2R and 2X better because of the additional space. I have camped in several ...

In Editor's Roundtable » Stephenson 2C Tent Review - Part 1
November 27, 4:11pm

Re: More than Radiation is going on.
This may be controversial but I agree with David Thomas's analysis of the foil placed on top of insulation. It works because it stops convection heat loss, conduction heat loss and, for a huma...

In Editor's Roundtable » Torso Simulator to test Heat Loss in Outdoor Gear – Radiation
June 27, 11:11am

Re: Re: Does condensation effect the reflection of radiation?
"There are two conditions: No foil - under a clear sky, this should be what happens when I “cowboy camp” with no tent Foil - placed on top of the insulation. Since the foil has an emissi...

In Editor's Roundtable » Torso Simulator to test Heat Loss in Outdoor Gear – Radiation
June 26, 4:02pm

Re: Re: Re: Torso Simulator to test Heat Loss in Outdoor Gear – Radiation
I have two Stephenson tents. The one with the radiant liner is going on 30 years old and has been used more than a hundred times. The barrier is more of an oxidized aluminum color like aluminum pa...

In Editor's Roundtable » Torso Simulator to test Heat Loss in Outdoor Gear – Radiation
June 26, 11:50am

Re: Torso Simulator to test Heat Loss in Outdoor Gear – Radiation
Very interesting article. I go back to the statement by Mammot, "Radiation is a very small part of our heat loss (despite the myths put about by sellers of space blankets)". If one holds...

In Editor's Roundtable » Torso Simulator to test Heat Loss in Outdoor Gear – Radiation
June 26, 10:53am

Re: Mountain SuperUltraLight Backpacking – Going SUL in the Mountains with Adequate Shelter, Insulation, and Rain Protection. Part 2A: Selecting the Lightest, Most Functional Gear - Backpack, Shelter, Sleeping Bag, Sleeping Pad
I often use a dual bivy bag made by Exped that weighs 13 oz.. I set it up with a stick or trekking pole to give good ventilation for one as a shelter. It also provides rain/wind protection, a biv...

In Editor's Roundtable » Mountain SuperUltraLight Backpacking – Going SUL in the Mountains with Adequate Shelter, Insulation, and Rain Protection. Part 2A: Selecting the Lightest, Most Functional Gear - Backpack, Shelter, Sleeping Bag, Sleeping Pad
May 15, 10:47am

Re: Re: Re: Re: Impact of Wind on Insulation Loft
It was my intent to keep part 1 fairly simple and basic and not overwhelm the first readers. You all make good points. Thanks. Please keep them coming so I might be able to address them in a pa...

In Editor's Roundtable » Impact of Wind on Insulation Loft
February 28, 1:57pm

Re: Re: Impact of Wind on Insulation Loft
I would like to add a comment for clarity to the article. All insulation is composed of solid materials that are touching each other that are conductors of heat (such as down fibers). Between th...

In Editor's Roundtable » Impact of Wind on Insulation Loft
February 27, 10:11pm

Re: Re: Impact of Wind on Insulation Loft
I agree that our methodology assumed a steady state wind condition that would not represent gusty winds. However, it represents the peak of wind gusts and some people who have been in very strong ...

In Editor's Roundtable » Impact of Wind on Insulation Loft
February 27, 3:58pm

Have you tried the Exped Dual Bivy
John did you ever try the dual bivy concept? I live in the SW and like the Exped concept. In the SW most rainstorms don't last a long time like in other parts of the US. When it does rain, I...

In GEAR » Two-person Bivy
November 28, 11:08am

All Reader Reviews by Tim Hawthorne

Showing 1 - 1 of 1 | Page: 1
 

Review

Category

Exped Bivy Duo
Well made and thoughtout bivy/poncho & shelter can save 3 to 5 lbs. For short rains pull over yourself and backpack and everything is inside poncho. Make camp while inside. Stake down the two arm ...

In Shelters - Bivy Sacks
November 29, 12:06pm