6.64oz Climashield-COMBAT Bivy Liner/Quilt –
I made this Quilt to be a Liner for my Pertex Quantum Bivy. I was worried that my Polarguard Delta Quilt/Tunic might not be warm enough for my Oct Hike. I have just the edges to run some home made Silk bias tape around and I am finished. The weight of this Quilt will be at or just a little over 7 ounces. This Quilt will slide into my Bivy first and then I will get in with the PG – Delta Quilt. That is if the temperature is below 55 degrees.
I need to do the Math on the Clo business yet. The CS-Combat Clo is a little more that the Clo for the PG-D. The weight of the insulation is about the same for both so I should end up with a total Clo a bit over 3 when I use them together.
Bivy laying on Climashield Combat as a pattern to cut the insulation.
Dying the Silk for the Quilt
Getting ready to cut the Silk.
Pinning the Silk to the insulation getting ready to sew.
New CS-Combat Quilt laying over the Bivy.
Richard Nisley
(richard295 – M) SUBJECT Re: Climashield – COMBAT – Quilt ON 09/28/2006 22:09:38 MDT POST REPLY
Bill-Your quilt liner will result in a total clo value up to .3 – .5 higher than the total of the two insulated items. This is a result of the air trapped between the liner and the quilt, assuming the girth of your bivy doesn’t compress the quilt / liner.
Even a silk liner sheet (.04 clo), without insulation, will provide this incremental air space insulation of .3 – .5 clo.
Edited by richard295 at 09/28/2006 22:12:36 MDT.
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Bill Fornshell
(bfornshell – M) SUBJECT Climashield – COMBAT – Quilt ON 09/28/2006 23:17:38 MDT POST REPLY
Some number to throw around.
The current Quilt weight is 7.0088 ounces.
This will go up a small amout when I sew the silk bias tape on the edges of the Quilt tomorrow. I have a bit of trimming to do yet and I may be able to hold the Quilt weight to 7 ounces.
The total sq yardage for the Quilt is 1.97 sq yards.
The weight of the Climashield Combat to cover that area is 4.85 ounces. This gives me an average sq yardage for the CS-Combat of 2.46. The 5 yard sample of CS-Combat had a extra thin layer sort of stuck on it. I thought about removing this to get closer to the 2 ounce per sq yard but it would not release easy. I just left it on and the weight came out higher. The good side of this is more insulation per sq yard and a warmer Quilt.
Clo: The clo for CS Combat is not released anywhere but I have been told it was higher the PG-Delta. To keep things simple I am using the PG-D clo of .68. The weight per sq yard of the CS-Combat is 2.46 times (PG-D clo) .68 to give me a number of 1.67. I know this is a low number but that is OK.
The clo number for my PG-Delta Quilt was 1.50.
Adding the clo for the 2 Quilts together gives me a total clo number of 3.17.
Taking Richard number of .3 I get an add-on number of .95. If I am doing this right I add that to the 3.17 and end up with a new total clo number of 4.12. I know this may be a “best case” number but with that high a number I should be good to somewhere below 40 (F) degrees.
Testing will give me a better answer to all this. I don’t expect it to be that cold next month while I am in Georgia but it might get down to around 45 (F) degrees. My plans are to go back up to Georgia in Dec 2006 or Jan – Feb 2007. I want to do a longer hike and more testing in some colder weather. I may as far north as the Smokies to find colder weather.
Edited by bfornshell at 09/28/2006 23:21:23 MDT.
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29 Sep 2006
I have finished my Climashield Combat – Bivy Liner/Quilt.
The final weight is 6.64 ounces. I trimmed it a bit to fit inside the Bivy better and the sq yardage came down to 1.77 sq yards.
I used it as a Quilt last night and slept under it. I wanted to see if it was big enough to use as a stand alone Quilt. It will be large enough and I was very warm under it.
I am about to sew a set of loops and hooks into my Bivy so I can connect the Liner to the inside of the Bivy.
