At 05:40  25/10/00 , Jeff Swann wrote:
>Dear Guys,
>I do not think you need to do deep air any more to do trimix.
>Legally, I would take it up with the guys teaching.
>Does the TDI Extended Range Course still involve an air dive to 55m?
>That was the most dangerous dive I ever did!!
>I am Cave and Advanced Trimix certified.
>Jeff the Darwinian.
>----- Original Message -----
>From: Jens Schamberger <schambrg@ch*.us*.ed*.au*>
>To: Steven Bliim <Steven.Bliim@mc*.co*.au*>
>Cc: Jeff Swann (E-mail) <jiswann@au*.ga*.ne*>
>Sent: Wednesday, October 25, 2000 12:15 PM
>Subject: Re: Air as a travel gas ?

I asked Richard Nicholls about this Jeff. Apparently 
40 metres is the max required depth for the technical 
safe-air(?!) and extended range courses. 60 metres on 
the trimix course, but you're on mix then. 

There isn't a GUE-trained DIR instructor in Sydney, 
but Richard will teach Hogarthian, and DIR - as well 
as we can work it out here (probably pretty well, come 
to think of it) without being exposed directly to the 
source.

rgds billyw




> > Steven
> >
> > I was told by Billy who is on the tec-list and lives in Northern Sydney
> > that,
> > if I  want an intelligent instructor, I should check out
> > Richard Nicholls at Dive Centre Manly. 02 9977 4355.
> > He's the one most of us DIR divers in Sydney recommend
> > and he will do the course DIR if I want to. I did not speak
> > to him about DIR yet. But I gave him a ring and he seems to
> > be quite a sensible guy. I still have to do nitrox and deep-air
> > courese first, I do not mind it. It is just surprises me that in
> > order to get rid of deep air I have to prove that I can dive deep
> > air. Not really logical.
> > So I will slowley drift towards mixed gases.
> >
> > Bye, Jens.
> >
> >
> > >
> > > Jens
> > >
> > > As a matter of interest who is the instructor in Manly who does DIR?
> > >
> > > Steve Bliim
> > >
> > > -----Original Message-----
> > > From: Jens Schamberger [mailto:schambrg@ch*.us*.ed*.au*]
> > > Sent: Wednesday, 18 October 2000 21:24
> > > To:
> > > Cc: techdiver@aquanaut.com
> > > Subject: Re: Air as a travel gas ?
> > >
> > > Hi Jeff,
> > >
> > > > The thought was to switch from air to trimix at 55m and feel the
> > > difference.
> > > > Although quite dangerous as we would all agree, it highlighted the
> > > difference.
> > >
> > > It will highlight the difference :-)
> > >
> > > > I don't know if TDI still promotes this.
> > > > Jens, you would need to speak to Richard Taylor.
> > >
> > > I allready got in contact with an instructor in Manly,
> > > who was recommented by one of the list members.
> > > I was just concerned about that "travel gas" issue, it
> > > got me confused.
> > >
> > > > A mate of mine did the TDI normoxic trimix course in Sydney recently,
>he
> > > > uses twin independents, and I think both back tanks had mix.
> > >
> > > The guy in Manly seems to do it DIR if want that.
> > > Sounds like a good idea to me.
> > > >From the recent discussions on the list I know that DIR
> > > is actually much more than just gear. It is also about right
> > > judgement and decissions. Seams very resonable to me.
> > >
> > > > If you have any reason to come up to Darwin, let us know.
> > >
> > > Thanks. I may come at the end of the year, when I need holidays :-)
> > >
> > > Thanks, Jens.
> > >
> > >
> > > --
> > > Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'.
> > > Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
> >
>
>--
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