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Based on my with George, I have now ordered to Apeks DS4 first stages with the new much smaller TX100 second stages (G500 size). Georges statement that swivels are not needed and that 3/8" is sufficient are sound (As are your arguments as well). The reason I believe the the 1/2" is probably used is for very cold water to reduce the speed of the air, and therefore the thermal loss, but that's probably just theorectical anyhow. The DS4 is the same as the US4 but dry sealed. I dive in absolute shit, cold, murky, salt water with vis often less tha 50 cm. If you see an unsealed first stage here after a seasons use, it's almost eaten away and has so much crap encrusted on it, you're amased it moves at all. Like I said, the TX100 breathes like a dream and doesn't have a swivel, but does have the 1/2" hose, so I'll try the DS4's and if they work OK then I'll continue to use them, otherwise I'll just go back to the TX100. No way am I going to use the Scubapro crap except as a bail out, or for holiday diving. For my Ice diving, I still say you can't beat SPIRO ARCTIC diagphram, and oil filled, tested to -70c and still not frozen, no that's an Ice rig. All the best and keep up the good work Ray Blaker -----Original Message----- From: Kevin Connell <kevin@nw*.co*> To: Raymond G. Blaker <frogman@wo*.nl*> Cc: techdiver@aquanaut.com <techdiver@aquanaut.com> Date: 17 March 2000 22:02 Subject: Re: Helium penetrates neoprene ??? >the 1/2" hose is a gimmick. You couldn't possibly out-breath a 3/8" hose. > >At 05:29 PM 3/16/2000 +0100, you wrote: >>OK, I use an APEKS TX 100 as my primary reg, this uses a 1/2" hose but >>breathes like a dream (It's also a diaphram system), why should I go back to >>something like Scubapro with it's 3/8"hose. The only problem I have is that >>the 1/2" hose tends to float up, but a couple of little lead rings soon stop >>this. Comments please >> >>Regards >> >>Ray Blaker >> >>-----Original Message----- >>From: Trey <trey@ne*.co*> >>To: Simon Murray <simonm@ho*.co*.za*> >>Cc: Tech Diver <techdiver@aquanaut.com>; Lovan <LovanC@Tr*.co*.za*> >>Date: 15 March 2000 20:18 >>Subject: Re: Helium penetrates neoprene ??? >> >> >> >Simon, could you get this stroke to subscribe to techdiver - we have not >> >had anyone to fry in weeks. >> > >> >The best chance for neopreme to hold to any degree at all is the >> >commercial grade G231 stuff that has nitrogen bubbles in it >> >intentionally in the manufacturing process. This mateial will compress >> >less than non-bubbled neompreme, and will rebound exceptionally well, >> >but still has a massive buoyancy swing. Only somebody who does not know >> >any better dives a neopreme dryuit of any kind. >> > >> >We use the G231 nmaterial for our hoods so that they do not stay crushed >> >and rebound at deco to keep us warm. >> > >> >The problem is diving is that you have an expensive , upscale sprot that >> >is taught by roofers and insects who are dumber than mushrooms and can't >> >get anything right. I saw an explanation of oxtox on the GUE list that >> >some guy got from one of the other agencies ( he threw it out for our >> >amusement) that was cause for Baker Acting whomever told it to him. What >> >amazes me is that the smart people believe the cockroaches and then go >> >so far as to repeat the slathering moronity that is taught to them by >> >the dive industry savants. >> > >> >This is yet one more example. What you ar "missing" , Simon, is just how >> >freaking stupid the dive "educators" really are. Good thing we have >> >these lists, or we'd all be Tai Chi breathing and taking deep air >> >classes in bondage wings , steel tanks with wetsuits, hemlets, square >> >lights, skin diving fins, neopreme drysuits, fucked up manifolds, tec >> >bs's, slobwinders, impropperly marked bottles, stroke gear configs, >> >stuffed hoses, Poseiden second stages, high speeed inflators, 1/2 inch >> >port regs, etc, etc. >> > >> >Simon Murray wrote: >> >> >> >> I had a conversation with a long term hardened stroke over the weekend >> >> and he told me that his non-crushed neoprene dry suit does not change >> >> its buoyancy characteristics as he goes deeper because the helium that >> >> he uses to inflate it penetrates the neoprene and stops it from >> >> crushing. >> >> >> >> Sounds like one of the best stroke stories I have ever heard, or am I >> >> completely missing something ? >> >> >> >> Regards, >> >> >> >> Simon Murray >> > >> > >> >-- >> >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'. > > >---------------------------------- > Kevin Connell <kevin@nw*.co*> > > NW Labor Systems, Inc > http://www.nwls.com > > Res tantum valet quantum vendi potest. > (A thing is only worth what someone else > is willing to pay for it) > >---------------------------------- > > -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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