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Help with clo value for Mammut's insulation
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 whitenoise . (whitenoise) - F Help with clo value for Mammut's insulation on 12/06/2012 15:47:12 MST Alright clo value experts, help me deduce my response from Mammut. I like their Rime Pro jacket, but had never heard of their Ajungilak insulation before (it has 100g of it evenly throughout their jacket). Sent a query to Mammut and here is the response:"Thermal Transmittance of Textile Materials (ASTM D1518--2003)Test ResultIntrinsic thermal resistance (Clo) : 2.488 (100gr/m2)"How would this break down in terms of warmth compared to Primaloft One, Sport, etc?Thanks!
 jerry adams (retiredjerry) - MLife Locale: Oregon and Washington Re: Help with clo value for Mammut's insulation on 12/06/2012 16:25:03 MST Apex is spec'd at 0.82 clo/oz/square yard so you'de need 3 ounce/square yard to equal 2.488 cloPrimaloft Sport is 0.79 so 3.15 ounce/square yardPrimaloft One is 0.92 so 2.7 ounce/square yard
 whitenoise . (whitenoise) - F Thanks... check my math on 12/06/2012 16:57:05 MST Thanks for the response. I don't know if my math is correct...100g = 3.527oz1 square yard = 0.836 square meters3.527 * 0.836 = 2.943 / 2.94 = 1.021.02 * 0.82Ajungilak clo/oz/yard = 0.836Is that accurate? Making Mammut's proprietary insulation just a little warmer than Apex? Or approximately 91% as warm as PL1?
 jerry adams (retiredjerry) - MLife Locale: Oregon and Washington Re: Thanks... check my math on 12/06/2012 17:29:07 MST My math agrees with yours - 0.84 clo/oz/yd2 : )I don't know why we don't all use grams, meters, and m2K/W - it would be much easierI bet that the variation from sample to sample is bigger than the variation between average Mammut, Apex, or Sport. One is a little better but it's so fragile - requires more quilting which may actually eliminate any advantage.