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A free flow with a FFM blows the expanding (very cold) gas straight on your lips in an already very cold enviroment. If you decide to make a normal safe ascent with any kind of a safety stop (we dive at high altitude) then your in for a very miserable ride, if deco is required then your SOL. In my case this was only a 70' OW dive so no spare mask was taken. Kind of blows the whole warmer face idea away doesn't it?! At 01:25 PM 1/14/98 -0500, Walton, Dave S (SAIC) wrote: >Could you explain the source of the frosted lips? I thought FFM's would >be warmer in cold water. > >Execuse me if I'm being a bit dense today... > >Dave Walton > > >> ---------- >> From: Jeremy Downs[SMTP:dcrco@jp*.ne*] >> Sent: Wednesday, January 14, 1998 11:59 AM >> To: ststev@un*.co* >> Cc: techdiver@aquanaut.com >> Subject: Re: ice diving >> >> Like others, I found this out first hand. It really sucks, my lips >> were >> frost chapped for a week. I filed it in the "well, that was money well >> spent" box along with the other stroke gear I squandered my money on >> during >> the learning process. >> >> That was the last time I used it. >> >> I might pull it out for a heavy O2 exposure on deco one day but until >> then >> it stays dry. >> >> >>The use of AGA's or other full face masks for ice diving is >> >contraindicated on SCUBA except for SAR >> >>or other working dives. Statistically, the low temperatures >> >encountered while ice diving >> >>frequently cause freeflows in FFM's, and this risk need only be >> taken >> >> -- >> 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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