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Note 44.200 MOUNT-L 200 of 517 CUPIDO::STRITAR "Andrej Stritar,IJS,(61)-371-321" 65 lines 21-SEP-1993 13:01 CUPIDO::STRITAR "Andrej Stritar,IJS,(61)-371-321" 65 lines 21-SEP-1993 13:01 -------------------------------------------------------------------------------- CC: Subj: Re: Ski Mountaineering Equipment Date: 20-Sep-1993 Posted-date: 20-Sep-1993 > > > Hey David (and the rest of the mountaineering gang), > > Since you have such an interest in equipment, I would like to ask you about > artificial sleeping bag fillings. What do you think about Hollofil, Liteloft > (from Thinsulate), Polarguard and Soft Bound? > > Thanx, > Gabor > I have talked with many climbers about bags and received all sorts of different opinions on down vs. synthetic. They agree that down is lighter, more compressible, lasts longer, but loses insulation power if wet, and is more expensive. According to many of these climbers certain factors make a down preferable and others a synthetic. If there is a good chance of getting the bag wet even from your own perspiration and you really need severe cold protection, use a synthetic. If you are conerned about the life of a synthetic bag, buy one with a lifetime guarantee. When it loses loft send it back. If weight or compressibility is more important than getting all the warmth out of a moist bag, buy a down one. Some of these climbers also said that since down bags compress easily, the R value on the bottom of the down bag gets quite low when compressed by body weight making it necessary for a good rest pad. I don't have any data to back this up but it makes sense. I personally use only synthetics because I often get too warm while sleeping and sweat excessively. I wake up soaking. This would scare me if I were in a down bag and were in a severe cold environment. I really like my The North Face Tangerine Dream (-30 degree) in this respect. It has a Coolmax liner which sucks moisture away from me. I don't feel soaking just steamy. The moisture just goes right through the bag and freezes on the outside. I just bang off the ice in the morning. If I try staying a bit cool while sleeping, I don't sleep well. If I get a little cold, I can forget sleeping altogether. My climbing partner, Alex, thinks I have a body temperature regulation problem. He is just the opposite. He sleeps well cold. He took a Kelty 25 degree bag (that is more like 40 degree because of loss of loft) to Ranier and slept in 4 degree weather. I would have died. He has sent that 25 degree bag back 3 times and they just send him another one. He says he will do it again soon. He has a Feathered Friend Eider (-30 degree) which he normally uses for anything below freezing. It is very light at 3.7 lbs. My TNF Tangerine Dream is 5.4 lbs. However, unless it's very cold, I don't take a rest pad, because my TNF bag provides plenty of bottom R value and cushioning. He takes a 1.1 lbs pad so his total weight is 4.8 lbs. Then the difference is only 0.6 lbs. I have the most fun though jumping up and down on my Lowe compression stuff sack trying to get my bag small enough to fit properly in my 7000 CI backpack. Alex just easily stuffs his Eider into its sack. Before I got the Lowe compression stuff sack, I used a The North Face sack, but I had to have Alex carry my bag in his 10000 CI backpack and I carried his bag. Willie Hunt
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