Quilt Baffles
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 Kirsty McPhail (bushgirl) - F Locale: Sydney Quilt Baffles on 02/22/2012 03:52:03 MST Hello all,I'm working on my first adventure into using down. I've bought the thru hiker kit and have read Roger Caffin's fabulous article. I'm a little confused over what is best for working out the baffle height. I'd like the overall loft to be 1.75 inches - so I was going to work out the weight of the down by using the length x width x height / fill power of the down and then add 10%. Question is, if I want an overall loft of 1.75 inches should I make my baffles this size or slightly smaller?Thanks Kirsty
 Hobbes W (Hobbesatronic) - F Locale: SoCal Quilt Baffles on 02/22/2012 08:29:38 MST I like the way Joe @ Zpacks describes how they calculate both baffle and (over) fill loft:900 Fill Power down means that one ounce of down should fill up to 900 cubic inches of space. Our 20 degree bag for example has a baffle height of 2.25", however it is filled with a calculated loft height of 2.925" (30% more than the baffle height) to account for any future loft loss. It will also have more than 2.25" loft between baffles. Our 30 degree bag has a baffle height of 1.5" but is filled with a calculated height of 1.95" (30% extra).ZpacksTim @ Enlightened also has a nice chart showing all his size dimensions & (over) fill options:Enlightened
 Brendan S (brendans) - MLife Locale: Fruita CO Re: Quilt Baffles on 02/22/2012 08:37:22 MST I usually cut the baffles to to the baffle height I want. Using up .25 or so on each side shortens them enough to manage the down well (I also usually overstuff ~20-30% over the caculated need). Edited by brendans on 02/22/2012 08:38:15 MST.
 Ivo Vanmontfort (Ivo) - MLife baffle height on 02/22/2012 08:43:02 MST The specs on enlightenedequiment can help youI think that 1,25 inch is a safe height (it depends a bit on the distance between the baffles and the % overfill)In my quilt , with a inch 1 baffle height, I measured 45 mm (about 1,75 inch) but in my case with a 100 percent overfill (400 gr down)In my (flemisch) blog you can see a few photos how I made the bafflesedit: I used a differential cut for the baffles!! Edited by Ivo on 02/22/2012 08:45:53 MST.
 jerry adams (retiredjerry) - MLife Locale: Oregon and Washington Re: Quilt Baffles on 02/22/2012 10:53:28 MST What about baffle width?I have this idea that if, for example, your baffles are 2 inches loft, then the baffle width should be 2 or 3 X - 4 or 6 inchesIf you're 1 inch loft, baffle width should be 2 or 3 inchesIf you're wider, then thin spots will develop where there's no downDoes anyone have experience with this?
 Ivo Vanmontfort (Ivo) - MLife baffle width on 02/22/2012 12:45:29 MST Jerry,my thoughts (For what it's worth.)you must not economize on the downoverstuffing avoids this problem partially.I copy from the manufacturers
 Kirsty McPhail (bushgirl) - F Locale: Sydney Quilt Baffles on 02/23/2012 00:11:16 MST Hi All - thanks for your help this is great. Ivo your quilt looks fantastic