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  1. #1

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    Exclamation Temperature affect

    How will stacking quilts affect the temperature rating? A 0* and a 20* UQ stacked would have an approximate rating of?

  2. #2
    Bubba's Avatar
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    Can't give you an exact number. The 20* will certainly add a lot to the 0*. if the two are stacked in such a way that both of their lofts are not compressed in any way it should be toasty.
    Don't let life get in the way of living.

  3. #3
    breyman's Avatar
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    Quote Originally Posted by Bubba View Post
    Can't give you an exact number. The 20* will certainly add a lot to the 0*. if the two are stacked in such a way that both of their lofts are not compressed in any way it should be toasty.
    Agreed. I would think it'd bring you down to at least -15 or 20. As a note, LeighLo has a pretty good video on stacking underquilts. Check out this page, half way down, under Stacking UQs for Deep Winter:
    http://www.hammockquilts.com/apps/videos/
    Brian
    Denver, CO
    Father. Husband. Scoutmaster.

  4. #4
    Senior Member hangnout's Avatar
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    Quote Originally Posted by Old Man View Post
    How will stacking quilts affect the temperature rating? A 0* and a 20* UQ stacked would have an approximate rating of?
    This thread from WhiteBlaze gives a formula that Pan from JRB provided.

    Quote from thread linked above

    x - ((70 - y)/2) = z

    x = first bag (higher rated/lower degree)
    y = second bag (lower rated/higher degree)
    z = rating of doubled bags

    Extra set of parenthesis to make it crystal clear that the x is not divided by 2, just the 70-y part. I think you're correct about the order of operations implying that anyway, but the parenthesis makes it clearer for anyone who hasn't had math in a while!

  5. #5

    Join Date
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    Thanx

    The formula gives what i was looking for and approximate -25* winter camping insulation. time to head out its suppose to be -10* on Wed.

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