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Guys, thanx a lot for your answers. Just to specify more what I meant - polypropylen seems to work when you deal with some levels of sweat. But in the moment you let accidentally some water in, let's say through neck seal, the water gets transported through polypro on the body and makes wet a quite large area and makes you cold. When the quantities on water are higher it seems that the transport function to outer layers just doesn't work as well as it works on pure Thinsulate which basically immediatelly takes the water away from your skin. Secondly the important for me is to have a recomendation from you what you use as a additional layer of insulation when just the Thinsulate is not enough. I'm talking about a dives in temp between 4-6C and duration of 2+hours. Certainly I use argon, but I'm still cold on deco. Best regards Jozef Gliviak Slovakia -----Original Message----- From: Sean T. Stevenson [mailto:ststev@un*.co*] Sent: 5. septembra 2001 16:42 To: Gliviak, Jozef; techdiver@aquanaut.com Subject: Re: Polypropylen underwear Josef, how wet was it? The polypropylene is recommended, not so much as additional insulative layering, but rather to provide a thin layer immediately adjacent to your skin that will take the sweat. This way, you wash the polypro and don't need to clean the Thinsulate as often, so it lasts longer. (Less laundering maintains maximum loft in the Thinsulate fibers, as well as its hydrophobic qualities). If you are not warm enough, you can add argon to the suit with additional weight to compensate. The benefit of any additional insulative layering will probably not outweigh the disadvantage in loss of dexterity. The other option is of course, electric heat, using the Gorix type material. I think both DUI and Typhoon offer suits like this, which are thin enough not to be a problem, but then you have the additional expense, as well as having to deal with the battery pack. Hope this helps. -Sean On Tue, 4 Sep 2001 15:59:48 +0100, Gliviak, Jozef wrote: >Guys, from various sources an underwear from polypropylene was recomended to >me as the right choice for dry suit bottom layer to be worn (e.g. under >thinsulate). According the information I've got it should transport water >(sweat) from your skin to upper layers. > >I tried it and was a bit disapointed. May be it works well in open air but >in closed enviroment when it was a bit wet it actually transported water >under thinsulate and made more body surface wet and cold. What's your >experience with this type of underwear? > >During those 4C dives which additional insulation do you use when yout >Thinsulate is not sufficient? > >Best regards > > Jozef Gliviak > Slovakia -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'. -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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