I have some materials on-hand and I’m considering using them to make a synthetic quilt. Before I start construction, I have a few questions:
1.) Which temperature rating do you think is more accurate for this quilt?
2.) From a weight perspective, is it worth trying to replace a 15 degree down mummy bag weighing ~2lbs. 15oz. by making a quilt from the materials below? I would probably need to use more then two layers of insulation to reach 15 degrees.
3.) If the answer to #2 is no, perhaps this quilt could be used as my warm weather quilt. Or, the materials could be used to make an insulated jacket and pants.
Shell: Thru-hiker.com 1.1 oz Nylon Ripstop 1st Quality
2 layers of Thru-hiker.com Climashield Combat
Per layer: 3.7 oz/sq yd. loft =.9 ” nominal. clo=.78/oz.
Total CLO: 3.7 * 0.78 * 2 layers = 5.77
EXPECTED TEMPERATURE RATING
100 – ( 40 * T )
100 - (40 * 1.8) = 28 degrees F
In this formula, the letter “T” represents the thickness, in inches, of that part of the quilt or bag covering you. Source: page 22 at http://www.rayjardine.com/ray-way/Quilt-Kit/index.htm or page 82 of Trail Life by Ray Jardine.
“Thirty-two degrees F, or 0 degrees C, you’d need a CLO value of 6.”
Based on that CLO information, the temperature rating for this quilt would be slightly above 32 degrees F.
Thanks for your help,