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I have been using the Apex TX50 for some years now and have made hundreds of dives with it in cold water and never had a freflow. The Scubapro on the other hand is useless for cold water diving , at least the G-250 and R-190 the D-400 seems to work a little better. The problem with the Scubapro is largely the1 stage but if combined with a good cold water 1 stage like the Poseidon they work pretty OK. It is a pity that Scubapro haven't come up with a better 1 stage when they have such great 2 stages i haven't got any experience with the new 1 stages though maybe they are better. Mares regs are also pretty good for cold water, i have some friends that use them with succes. I am using the AGA ffm for shallow salvage work and have found it quite prone to freacing, have had several freeflows with it. The Poseidon also works fine but when it does start to freeflow it is very violent and goes quick. The Poseidon might also fail to add during a freezeup witch is not very good and the enviromental kit for the 1 stage is not a great design.. Randy Sullivan wrote: > All of the reg failures that have seen have been second stage freezing. On > examination post dive, the second stage is full of ice and the intermediate > pressure is at the set psi. If the psi had gone up this would suggest 1st > stage failure. I haven't seen one of these. > > I like the conshelf because it works. It may be helped out because of the > metal 2nd stage that doesn't insulate the reg. I now that's thin, but the > reg still works all the time. As for the Odin I haven't had it under the > ice but the last cold water trail, 40* F in river with10 knot current, > working it extremely hard, performed as it should. > > This past spring a buddy and I were diving the St. Mary's river 2 or 3 times > a week. It was fun to watch the submerged ice coming out of the generating > station. The idea caught on and we would bring divers for their 2 minute > dive that end with the free flow. I don't remember any of the models but > the dacors wouldn't make it to the water and the sherwoods would last long > enough to get you wet. The funny thing is that these divers with the poor > equipment still use it. I use rule # 1 all the time now, but unfortunately > the one local dive shops still actively promote dacor & Sherwood. This does > limit the amount of dive buddies in the area. These dives, would by this > listserv, would be considered rec. dives > > Technically speaking divers up hear use mostly Odins(75%) or Scuba Pro. I > see the odd cyclone and one guy uses Mares. I have not seen a Poseidon > fail. On the other hand I have seen the SP free flow, not all the time but > often enough to remember. The SP free flows have all been in the summer and > start at depth. They usually start to fail at 150' to 180' on the way down. > This is real scary because when you think about it, that reg was at 80*F 2 > minutes ago. > > Just my $0.02 on cold water regs, since this is almost all the diving that I > do. > > Randy Sullivan > Sault Ste. Marie, Ont > sulteck@ic*.ne* > -----Original Message----- > From: Sean T. Stevenson <ststev@un*.co*> > To: Randy Sullivan <sulteck@ic*.ne*>; techdiver@aquanaut.com > <techdiver@aquanaut.com> > Date: Saturday, January 10, 1998 9:01 PM > Subject: Re: ICE dives aren't Cave dives > > >Good points, but I think we're going off on a bit of a tangent. For > commercial or SAR work, we can > >use bandmasks, helmets, comms, hot water suits, surface supply and as many > people as we need > >topside. This thread started (I think) adressing only recreational type > ice diving on SCUBA. For > >this type of diving, FFM's are a bad idea as you stated because of their > tendency to freeflow. I > >have to question your assessment of regulator failures in your post. > Nearly all of the failures I > >have observed originate in the second stage, and I use SP MK 20's as firsts > with no problems. > >Dacor is crap, but one of the Sherwood models (maximus, I think) has a > proven track record with the > >US antarctic diving program. > > > >-Sean > > -- > 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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