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From: <kirvine@sa*.ne*>
Date: Wed, 08 Dec 1999 10:31:51 -0500
To: x32767@bo*.qu*.co*
CC: Richard Sherington <rs@da*.co*.uk*>, techdiver@aquanaut.com
Subject: Re: WKPP videos
I play in a band ( drums). As such, I listen to every kind of music
there is, and Megadeath, desptite the name and such, contains some
serious talent. I picked all of the music othe than what Steve Irving
picked out for WKPP , and Rat picked out for some of the wreck diving
stuff.

I'm having trouble growing up, but my kids like me.

Green_Manelishi wrote:
> 
> George,
> 
> I am curious ... who picked Megadeth?
> 
> Suggestion to sky-divers: if you are planning a video perhaps "High
> Speed Dirt" (Megadeth: Countdown to Extinction) would be a good intro
> :-)
> 
> G_M
> kirvine@sa*.ne* wrote:
> >
> > Rich- the Halcyon has a small bellows insides a large bellows. The
> > travel of the bellows is a function of how big a breath you take. That
> > in turn determines how far the small bellows travels, and the small
> > bellows has the discharge valve. Big breath gives a big discharge. The
> > "ratio" is the raitio of the size of one to the other, and then there is
> > a mechanism that works off of pressure that shrinks the small bellows to
> > make it discharge less gas the deeper you go. The net effect is to
> > basicly give you your surface air consumption rate AT depth - meaning
> > that at any depth you will use the same amount of gas as if you were on
> > the surface.
> >
> > Yes, this is a "waste of gas" relative to a fully closed rebreather, and
> > by way of comparison, a Cis Lunar will ratio at about 40:1 relative to
> > about 10:1 for a Halcyon.
> >
> > This is not the issue - the issue is electronic vs manual. If I do a
> > dive with my rb vs Richie Pyle with his Cis, and we both have 80 cu ft
> > drive bottles at 300 feet, Pyle will use 1/4 of his while I use up all
> > of mine. However, that is enough gas to do a 10,000 foot dive each way,
> > and when the two machines have a problem, we will both need adequate
> > bailout, so again, a "mute" point. We all saw at Wakulla that the Cis
> > Lunar divers could not get as far as I went on open circuit,let alone on
> > the Halcyon,  so there must be something oprating here - it is a trade
> > off of playing with the rebreather ( a fun techie occupation) vs using a
> > tool that is right for the job, the simple Halcyon.
> >
> > I personally will not subject myself to an electronic rebreahter while
> > diving - I would rather pay attention to the diving and not the rb. You
> > know when the halcyon is not working because either you can not breathe,
> > or it will not add gas.
> >
> > The vidoes are available of of the EE web site, and the music in the
> > beginning of DIR II is Megadeath. They played Sunday night at a club
> > near my house here in town. The song you liked is called " A Tout Le
> > Monde".
> >
> > Richard Sherington wrote:
> > >
> > > I have been trying in vain to get in contact with Graeme Davison to get
hold
> > > of a few videos especially the rebreather one.  The inspiration is the
"best
> > > thing since sliced bread" in England and everyone says the halcyon is
JUST a
> > > semi-closed unit and wastes gas!!   I understand the principle of how the
> > > unit works but would like to understand more about how it actually does
it,
> > > i.e. how the bellows vary the exhalation ratio. Yes I did read the fall
> > > edition of Immersed.
> > >
> > > I saw the DIR II video the other day and it looks as though you have
changed
> > > the way you rig the stage bottles i.e. tying them off at the neck.  Is
this
> > > a new way you have found that works better than the diagram put on the net
> > > by Sean Stevenson?
> > >
> > > Lastly, what is the music at the beginning of the DIR II video? I like it
> > > but don't recognise it.
> > >
> > > Cheers
> > >
> > > Richard
> >
> > --
> > Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'.
> > Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.


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