Results 1 to 6 of 6
  1. #1
    Senior Member
    Join Date
    Jun 2009
    Location
    Northeast Georgia
    Hammock
    DIY Gathered
    Tarp
    DIY Diamond
    Insulation
    DIY Down
    Suspension
    Webbing/Whoopie
    Posts
    464
    Images
    10

    Down overstuff diminishing return question.

    Assuming the same coverage, which should be warmer?

    2.5" loft with 25% overstuff. Or

    3.0" loft with 10% overstuff.

    Or am I flailing at gnats?


    Jbo

  2. #2
    Senior Member BillyBob58's Avatar
    Join Date
    Jan 2007
    Location
    Tupelo, MS
    Posts
    11,108
    Images
    489
    Quote Originally Posted by jbo_c View Post
    Assuming the same coverage, which should be warmer?

    2.5" loft with 25% overstuff. Or

    3.0" loft with 10% overstuff.

    Or am I flailing at gnats?


    Jbo
    What is the definition of overstuff? Is it something like: adding down to the point that the nylon puffs up higher than the baffles by some X %? I don't really know. But if it is something like that, then 25% overstuff with max loft of 2.5" is still less loft than 3", even if the latter only has 10% overstuff. So you still have more loft, thus more warmth. Now I don't know if there is some other advantage to overstuff, other than just trying to gain some more loft past the baffles?

    I have oft heard than somewhat denser down, with all other things (loft, baffles etc) being equal, is a bit warmer. IOW, 3" worth of more densely packed baffles will be somewhat warmer than 3" worth of less densely packed chambers. But I think if you are comparing 3" to 2.5", the 3" will be warmer regardless of density.

    Anyone know for sure?

  3. #3
    Senior Member
    Join Date
    Jun 2009
    Location
    Northeast Georgia
    Hammock
    DIY Gathered
    Tarp
    DIY Diamond
    Insulation
    DIY Down
    Suspension
    Webbing/Whoopie
    Posts
    464
    Images
    10
    That's why I ask. I posed a question elsewhere of whether there was value in overstuffing and got several responses indicating that some overstuff was better than higher loft in some instances.

    Overstuff = more than exactly enough down to fill the cubic volume of the item

    I'm starting an UQ and trying to decide which of the stated options to go with.

    Thanks for the response.

    Jbo

  4. #4
    Senior Member Knotty's Avatar
    Join Date
    Mar 2009
    Location
    Denville, NJ, USA
    Hammock
    DIY Stretch-Side
    Tarp
    DIY Cat Cut Hex
    Insulation
    Phoenix and Nest
    Suspension
    cinch buckles
    Posts
    4,377
    Images
    227
    I vote for 3" with 10% overstuff. Seems like most overstuff quilts offered don't go past 15%, so the 2.5" with 25% overstuff probably has diminishing returns.
    Knotty
    "Don't speak unless it improves the silence." -proverb
    DIY Gathered End Hammock
    DIY Stretch-Side Hammock
    Stretch-Side "Knotty Mod"
    DIY Bugnet

  5. #5
    Senior Member wildcrafter's Avatar
    Join Date
    Jul 2010
    Location
    the mean street of irons mi
    Hammock
    diy wildcrafter
    Tarp
    UGQ preproduction
    Insulation
    UGQ all the way
    Suspension
    whoopie
    Posts
    586
    Images
    11
    it was my impression that the reason for overstuff was because of loss of down loft after repeated compression and uncompression.

  6. #6
    Senior Member
    Join Date
    Dec 2009
    Location
    Md
    Posts
    5,221
    For all whom are inclined here is a thread (with links to other threads) on this very subject http://www.backpackinglight.com/cgi-...189&startat=60

    For you to gain all of the information you must read all of the posts and the previous post links to understand the wealth of information they have given!

    Hope this helps!!!
    "yesterday is history, tomorrow is a mystery, but today is a gift---thats why its called a present" - Master Oogway
    It's always best if your an early riser!

  • + New Posts
  • Similar Threads

    1. Zeppelin Overstuff Question
      By Shootin2ool in forum UGQ Outdoor Equipment
      Replies: 1
      Last Post: 11-04-2014, 15:54
    2. IX--point of diminishing return?
      By FLScouthanger in forum Bottom Insulation
      Replies: 1
      Last Post: 01-03-2013, 19:59
    3. overstuff question
      By flair4040 in forum Bottom Insulation
      Replies: 18
      Last Post: 11-10-2011, 22:32
    4. Too Much Loft; Diminishing Returns?
      By Trooper in forum Under Quilts
      Replies: 15
      Last Post: 01-17-2011, 20:48
    5. Overstuff question
      By Mike210 in forum Do-It-Yourself (DIY)
      Replies: 13
      Last Post: 01-12-2011, 06:53

    Tags for this Thread

    Bookmarks

    Posting Permissions

    • You may not post new threads
    • You may not post replies
    • You may not post attachments
    • You may not edit your posts
    •