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Comparing m90 to Pertex
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Richard Nisley
(richard295) - M

Locale: San Francisco Bay Area
Re: Re: Re: Impetus v. other stuff & argon on 07/22/2013 18:40:48 MDT Print View

Tanner,

You said in part, "...I am just interested in relative breat... how much air can be sucked through the materials."

What application(s) are you designing for where abrasion resistance, HH, and DWR robustness are not also factors in your decision process?

Edited by richard295 on 07/22/2013 18:41:30 MDT.

Tanner M
(Tan68)
Re: Re: Re: Re: Re: Impetus - maybe this Q is more simple on 07/22/2013 19:56:13 MDT Print View

I use the 'lamprey' test, myself :^)
I was just looking for a relative test so more/less is good enough.
Thanks for the note.

Tanner M
(Tan68)
Re: Re: Re: Re: Impetus v. other stuff & argon on 07/22/2013 20:04:32 MDT Print View

I am looking at these for shell or liner for a quilt.
I sleep in a tent. The tent doesn't get much air flow.

My thought was to have more permeable material on top/shell and less breathable for the liner. May not matter much but I figured it couldn't hurt. For this reason, relative results were good enough.

This would be a down quilt I will not intentionally use around freezing.

PS - For instance, I figure it would be a best practice to not use the less permeable M50 as a shell with more permeable Nobul liner. Maybe M50 as both shell and liner while Nobul would be a better match with M90 shell. etc.

It is likely I am just thinking too much.

In any case, I have lumped both Nobul products together. This is probably not a correct thing. I understand v2 is more down resistant so I take it to be less breathable. Seems to be a trend of inverse relationship.. maybe.

I am probably better off to just worry about performance with down then weight and then cost.

Edited by Tan68 on 07/22/2013 20:16:15 MDT.