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Date: Tue, 20 Jun 2000 19:17:27 -0400
From: Al Marvelli <ajmarve@ba*.ne*>
To: David Blundell <daveblundell@op*.co*.au*>
CC: Techdiver Mailing List <techdiver@aquanaut.com>
Subject: Re: Weights
show me where i said to use a weight belt in an overhead environment. You cant
because i
didnt.

Of course you want non ditchable weight in a cave.

reading is fundamental you know.

Al Marvelli

David Blundell wrote:

> Al,
>
> You make some valid points.
>
> But  (aside from diving sidemounts)  what if you want to negotiate a
restriction under
> water that requires you to remove your gear so you can squeeze through then
continue
> your dive.  Whilst like I said I prefer to wear side mounts for this but at
the same
> time it is not unreasonable to backmount such a dive.  Also if the
restriction was to
> narrow for large side mount tanks to squeeze through safely, then maybe you
may need
> to push one tank through in front of you first.  Such a situation would
require you to
> be confident that you were negative when such gear/tank is removed.
>
> Granted on most diving situations, you don't have to take your gear off, but
there are
> some such situations, then you don't want to be positive when you do
underwater.  it
> my be a rare situation that you have to take your gear off, but do you stick
your head
> in the sand and say that it would never happen.  I hate wearing weight belts,
but my
> suit and thick thermals are positive, that I could wave at the shuttle if i
let go at
> depth.  Therefore I prefer to have some weight around my waist, in some dives.
>
> Also I guess that if you need extra weight, and you mount it in between your
tanks, I
> won't be busting my ring lifting your tanks out of the boat like we do in
Victoria.
>
> Some times you have to me flexible.
>
> Regards
>
> Dave.
>
> Al Marvelli wrote:
>
> > What i find interesting is that everybody seems to think the exact second
you lose
> > your weights you will immediately rocket to the surface. In neo you suit is
> > crushed and you have to swim up a little to get it going. Otherwise water
is 800
> > times denser than air and you have a few seconds to react, unless you are
stoned
> > to the bone on air.
> >
> > The other funny thing is that people cant seem to differentiate between
overhead
> > or cave and open water rigs, one is negative for a reason < cave to keep
you off
> > the roof, where you can get trapped or in deco anything away from the
surface
> > where you will fizzle to death> and one is not <open water you may need
to GO UP>
> > If you have been playing along here you should know the difference; George
has
> > been quite clear over the years with this one.
> >
> > The only place you take your rig off is in the pool infront of students, or
on the
> > surface, where weights dont matter.
> >
> > Al Marvelli
> >
> > Jim Cobb wrote:
> >
> > > Hey, Johnny I don't know what kind of diving you are doing "down under"
but
> > > the kind of diving we do up here, if you get to the point that you have to
> > > take your rig off during the dive, you are pretty much fucked, screwed,
> > > blued and tattooed, weightbelt or no.
> > >
> > > Is it just me or does this not seem rather obvious to the rest of the
list?
> > >
> > > Please refrain from further posts until you know what the fuck you are
> > > talking about.
> > >
> > >    Jim
> > >  -------------------------------------------------------------------
> > >  Learn About Trimix at http://www.cisatlantic.com/trimix/
> > >
> > > > From: "John McMillan" <mcmillan_knit@on*.ne*.au*>
> > > > Reply-To: "John McMillan" <mcmillan_knit@on*.ne*.au*>
> > > > Date: Fri, 16 Jun 2000 21:30:13 +1000
> > > > To: "Techdiver Mailing List" <techdiver@aquanaut.com>
> > > > Subject: Re: Weights
> > > >
> > > > I read a lot of crap in the many posts that have been presented over the
> > > > last few days regarding weighting. Most of the suggestions have been
down
> > > > right bloody dangerous, stupid, and idiotic. Hey guys what happened to
> > > > keeping it simple. We should weight ourselves with out tanks harness etc
> > > > attached, just negative. if we are still negative with the tanks and
harness
> > > > etc on then we are correctly weighted. Using the traditional weight
belt is
> > > > the most effective way of doing this. Have a bloody good think about
why you
> > > > should be weighted this way before you make any comments. The guys that
want
> > > > to wear tank weights etc all over the place have a think about buoyancy
> > > > control if you have to take your gear off in water at depth. If and
when the
> > > > shit hits the fan and you have to do this with weights all over your
gear
> > > > "good luck".
> > > >
> > > > Hoo Roo
> > > > Johnny Mack
> > > > Down Under
> > > >
> > > >
> > > > ----- Original Message -----
> > > > From: John Walker <techdive@ea*.ne*>
> > > > To: <techdiver@aquanaut.com>
> > > > Sent: Friday, June 16, 2000 10:11 AM
> > > > Subject: Re: Weights
> > > >
> > > >
> > > >> Hell Cobber they give me a sore back.  I'd bet Mike Black (you know,
> > > > the
> > > >> guy that doesn't dive) would consider this a Type 2 DCS hit.
> > > >>
> > > >> Dr. John Walker
> > > >>
> > > >>
> > > >>
> > > >> ----- Original Message -----
> > > >> From: Jim Cobb <cobber@ma*.ci*.co*>
> > > >> To: Al Marvelli <ajmarve@ba*.ne*>; Paul Braunbehrens
> > > >> <Bakalite@ba*.co*>
> > > >> Cc: <techdiver@aquanaut.com>
> > > >> Sent: Wednesday, June 14, 2000 9:02 AM
> > > >> Subject: Re: Weights
> > > >>
> > > >>
> > > >>> Weight belt for wetsuits. Weight belt fucks up the airflow in your
> > > > drysuit
> > > >>> and is a failure point. I hate weight belts.
> > > >>>
> > > >>> Jim
> > > >>> -------------------------------------------------------------------
> > > >>> Learn About Trimix at http://www.cisatlantic.com/trimix/
> > > >>>
> > > >>>> From: Al Marvelli <ajmarve@ba*.ne*>
> > > >>>> Date: Tue, 13 Jun 2000 03:24:40 -0400
> > > >>>> To: Paul Braunbehrens <Bakalite@ba*.co*>
> > > >>>> Cc: techdiver@aquanaut.com
> > > >>>> Subject: Re: Weights
> > > >>>>
> > > >>>> I dont mean to flame Paul personally but I have to ask some simple
> > > >> questions
> > > >>>> here.
> > > >>>>
> > > >>>> Why is the weight belt not ideal? its cheap, easy to learn, and found
> > > >>>> everywhere.
> > > >>>>
> > > >>>> The belt gives you a built in failure indicator< if you are paying
> > > >> attnetion
> > > >>>> you can feel it slip, and thats easy to correct on your own> and if
> > > > its
> > > >>>> under you crotch stap has a built in anti ditch safety.
> > > >>>>
> > > >>>> and also
> > > >>>>
> > > >>>> what is the facination with non ditchable weight?
> > > >>>>
> > > >>>> especially on a rig that is limited to no stop diving by definition??
> > > >>>>
> > > >>>> I can understand its significance on a deco dive, but you all do
> > > > realize
> > > >>>> that if your worst fears come true and you undergo a buoyant ascent ,
> > > >> you
> > > >>>> are merely performing skills practice?? That evey agency has blow and
> > > > go
> > > >> as
> > > >>>> its last resort for ndl diving?
> > > >>>>
> > > >>>> have any of you removed your weights during a dive? what was the
> > > > result?
> > > >> I
> > > >>>> had my belt off three times in front of the class i was helping with
> > > >> tonite,
> > > >>>> no problem with an al 80 with an al plate and a 1/4 suit  in 12 ft of
> > > >> water,
> > > >>>> i had plenty of time to dump the bc and remain with my weight belt
> > > > with
> > > >> just
> > > >>>> a little effort. Are we all just not paying attention?
> > > >>>>
> > > >>>> worried about buckle failure? wear two.
> > > >>>>
> > > >>>> We are not even going to get into the pony bottle, but fyi my
> > > >> understanding
> > > >>>> of hogarthian means ultra minimal as in no reserve gas, even in
> > > >> overhead.
> > > >>>> and of course the bottle is unnecessary for anything, you can either
> > > >> blow
> > > >>>> and go or you cant and if you cant you need a real redundant system,
> > > > not
> > > >> 13
> > > >>>> freaking cu ft. This w/e i was forced to dive off the bow b/c the
> > > >> customers
> > > >>>> used up all the rack space with their pony bottles filled with nitrox
> > > >> too
> > > >>>> hot for the bottom< typical, they have all been hosed and regard
dir
> > > > as
> > > >>>> internet bs>and then i had to endure the shop owners bitching about
my
> > > >>>> doubles being too much gear for the dives< which they were, but i
> > > > needed
> > > >>>> them empty and gas costs money so i aint freaking wasting it>so i am
> > > >> ready
> > > >>>> for all comers on this pony bullshit.
> > > >>>>
> > > >>>> You dont need a pony bottle unless you are solo diving without a
plan.
> > > >>>>
> > > >>>> Think it through people.
> > > >>>>
> > > >>>> Al Marvelli
> > > >>>>
> > > >>>> PS if those two quarry guys dont send me snail addresses ill never be
> > > >> able
> > > >>>> to mail them schedules and since i lost my inbox i dont havetheir e
> > > >>>> addresses, so get back to me fellas.
> > > >>>>
> > > >>>> Paul Braunbehrens wrote:
> > > >>>>
> > > >>>>> OK, I went through tons of archives last night, trying to get to the
> > > >>>>> bottom of this.  First, let me tell you my setup.  I'm diving a
> > > >>>>> backplate and wings, with a drysuit, and (for now) a single tank and
> > > >>>>> a pony bottle.  Leaving enough air in my suit so I can still move
and
> > > >>>>> do a safety stop at the end of a dive, I need 17 pounds on my belt
(I
> > > >>>>> dive in cold water).
> > > >>>>>
> > > >>>>> Right now this weight is on my weight belt, which is ok but not
> > > > ideal.
> > > >>>>>
> > > >>>>> Perusing the archives, it seems the consensus is to make a V weight
> > > >>>>> for at least some of this.  Let's say it will weigh about 9 Pounds.
> > > >>>>> This still leaves 8 pounds.  I could then either leave that on my
> > > >>>>> weight belt, or I could put it in the Halcyon weight pouches.  I
> > > >>>>> assume that when I go to doubles I won't need most of it anymore?
> > > >>>>> Also, DiveRite sells a "trim weight" that will fit between the bolts
> > > >>>>> on the backplate.  I was thinking of this as an option.
> > > >>>>>
> > > >>>>> Also, I read a lot of posts saying the canister light is 6 pounds
> > > >>>>> negative (or thereabouts).  Mine is 1.5 pounds negative, which means
> > > >>>>> I have to account for that weight somewhere.
> > > >>>>>
> > > >>>>> One post I read which made a lot of sense, said that you should have
> > > >>>>> about 5 or 6 pounds of ditchable weight (if any).  When you ditch
> > > >>>>> your weight you don't want to become so positive as to end up in
> > > >>>>> lunar orbit.
> > > >>>>>
> > > >>>>> I would like to get as close to hogarthian as possible before moving
> > > >>>>> to doubles, so any help is appreciated.  I'm even moving my canister
> > > >>>>> back on my harness (I had it upside down and attached to the
> > > >>>>> backplate, but I find that it has a tendency to sit on the wiring
> > > >>>>> connection...not good).
> > > >>>>>
> > > >>>>> Cheers,
> > > >>>>>
> > > >>>>> --
> > > >>>>> Paul Braunbehrens mailto:Bakalite@ba*.co*
> > > >>>>> http://www.daw-mac.com Mailing list for digital audio on the mac
> > > >>>>> --
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