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I can. Rather than gripping the knob, keep your hand open place it =
against the side of the knob. move it swiftly and the knob (if =
sufficiently greased/cared for) will turn. Allowing for the knob to be =
5cm in diameter (visualised in my head - I don't have a cylinder to =
hand), this gives a circumference of 15.71cm (2DP). My hand from base of =
palm to fingertip is 17cm, and I have small hands.=20

I didn't want to get involved in this thread, but I have been doing =
linear regressions for my dissertation for the past 6 hours, and I am =
beginning to get standard errors larger than coefficients, which is =
generally not good when hoping for significant results! I needed to take =
it out on someone. It's 5:02am and my usual target (my flatmate) is =
asleep and I can't be arsed waking him up to verbally abuse him. Sorry =
in advance, but I now feel better, and I suppose that's all that matters

Safe Diving,

Chris

It takes a big man to cry, but it takes a bigger man to laugh at that =
man.


  ----- Original Message -----=20
  From: David E. Smith=20
  To: Phi Le ; adrian scothern ; George Irvine ; techdiver-aquanaut.com =
; Chris Tibble=20
  Sent: Saturday, April 14, 2001 4:41 AM
  Subject: RE: Isolating Manifold Question


  I would like to personally thank Phi Lee for being so smart as to =
catch
  the "subtle" difference between 2 half turns and 1 full turn.  I =
realize that
  I as a mere mortal can not turn a valve behind my head a complete =
revolution
  without dislocating my wrist.  Apparently he can.  Thank you for =
posting
  yet another useful message in the never ending "concentrate on the
  minutia instead of the content post" mentality.

  Also, not related to Phi's post,  It seems to me that the how one =
would want
  a manifold isolator positioned for mixing gas is COMPLETELY separate =
from the
  discussion of how you would want to position it for diving.  If you =
are not
  intelligent to be able to position an isolator for mixing gas, you =
probably shouldn't
  be mixing in the first place!

  dsmith218@ho*.co*
  ICQ# 25409809

  Moderation is for the poor, and the healthy...of which I am neither. - =
Polver
   =20

  -----Original Message-----
  From: Phi Le [mailto:phi@sk*.be*]
  Sent: Friday, April 13, 2001 9:15 AM
  To: adrian scothern; George Irvine; techdiver-aquanaut.com; Chris =
Tibble
  Subject: RE: Isolating Manifold Question


  Adrian,

  Do you think it would work with 1 full turn, or must it be *exactly* 2 =
half turns ?

  -Phi
    -----Original Message-----
    From: adrian scothern [mailto:ady@no*.fs*.co*.uk*]
    Sent: Friday, April 13, 2001 12:38 PM
    To: adrian scothern; George Irvine; techdiver-aquanaut.com; Chris =
Tibble
    Subject: Re: Isolating Manifold Question





      Well, i've been diving with the ISO two half turns , since having =
a twin set!, and proberley 3/4 OF Europe dive's The BullShit Paranoia =
Way, I'm Sorry that i've No Idea about Diving OH DEMI GOD OF THE =
UNDERWATER WORLD =20

      -- Original Message -----=20
        From: George Irvine=20
        To: adrian scothern ; Chris Tibble ; techdiver-aquanaut.com=20
        Sent: Friday, April 13, 2001 11:19 AM
        Subject: Re: Isolating Manifold Question


        And what bullshit paranoia do you attribute the "two half turns =
"  to? This is the kind of mindless crap that gets people killed. I will =
say right here and now that you can come up with no reason to do =
something that stupid that makes any sense what so ever. Give it a try.


          ----- Original Message -----=20
          From: adrian scothern=20
          To: Chris Tibble ; techdiver-aquanaut.com=20
          Sent: Thursday, April 12, 2001 7:04 PM
          Subject: Re: Isolating Manifold Question


          I have the ISO two half turn's on, and I think the key is to , =
Know your kit inside out, I've sat in the dark , in full kit for over 30 =
hours ,every new bit of kit , i go through the same process, and Do know =
my current config  Insideout , the wife finds this highly amusing =
if/when she walks in . same goe's for inwater training dives .

          ady

            ----- Original Message -----=20
            From: Chris Tibble=20
            To: techdiver@aquanaut.com=20
            Sent: Thursday, April 12, 2001 6:28 PM
            Subject: Isolating Manifold Question


            Just a quickie. I'm just about to buy my first twinset with =
a manifold. I've dived twins before, independents because of fiscal =
reasons (I'm a poor student!) What I need to know is this. Some of the =
people I have talked to who dive manis only open their iso knob about =
1/2 a turn, whilst others open it all the way. Thinking about it I can =
see advantages and disadvantages to both:

            All the way
            Adv:         No risk of turning wrong way

            Disadv:     May get stuck if turned on all way
                            Have to turn it 3 turns (or whatever)

            Part way
            Adv:        V fast way of isolating

            Disadv:    Can turn it the wrong way=20
                           Not having it open all the way may limit =
equalisation across the manifold.

            Now any or all of this may be unmitigated rubbish, but it's =
just what I was thinking about last night.

            Any comments/suggestions as to how best to do it?

            As this is my first post, go easy on me - I'm still =
learning!

            Many thanks,

            Chris


            --
            It takes a big man to cry, but it takes a bigger man to =
laugh at that man.




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<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>I can. Rather than gripping the knob, =
keep your=20
hand open place it against the side of the knob. move it swiftly and the =
knob=20
(if sufficiently greased/cared for) will turn. Allowing for the knob to =
be 5cm=20
in diameter (visualised in my head - I don't have a cylinder to hand), =
this=20
gives a circumference of 15.71cm (2DP). My hand from base of palm to =
fingertip=20
is 17cm, and I have small hands. </FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>I didn't want to get involved in this =
thread, but I=20
have been doing linear regressions for my dissertation for the past 6 =
hours, and=20
I am beginning to get standard errors larger than coefficients, which is =

generally not good when hoping for significant results</FONT><FONT =
face=3DArial=20
size=3D2>! I needed to take it out on someone. It's 5:02am and my usual =
target (my=20
flatmate) is asleep and I can't be arsed waking him up to verbally abuse =
him.=20
Sorry in advance, but I now feel better, and I suppose that's all that=20
matters</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Safe Diving,</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV>Chris</DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>It takes a big man to cry, but it takes =
a bigger=20
man to laugh at that man.<BR></FONT><BR></DIV>
<BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
  <DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
  <DIV=20
  style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
  <A title=3Ddsmith218@ho*.co* href=3D"mailto:dsmith218@ho*.co*">David =
E.=20
  Smith</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A
title=3Dphi@sk*.be*=20
  href=3D"mailto:phi@sk*.be*">Phi Le</A> ; <A =
title=3Dady@no*.fs*.co*.uk*=20
  href=3D"mailto:ady@no*.fs*.co*.uk*">adrian scothern</A> ; <A=20
  title=3Dkirvine@sa*.ne* href=3D"mailto:kirvine@sa*.ne*">George =
Irvine</A> ;=20
  <A title=3Dtechdiver@aquanaut.com=20
  href=3D"mailto:techdiver@aquanaut.com">techdiver-aquanaut.com</A> ; <A =

  title=3Dchris.tibble@bt*.co*=20
  href=3D"mailto:chris.tibble@bt*.co*">Chris Tibble</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Saturday, April 14,
2001 =
4:41=20
  AM</DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> RE: Isolating
Manifold =

  Question</DIV>
  <DIV><BR></DIV>
  <DIV><FONT face=3DTahoma color=3D#0000ff><SPAN =
class=3D480533203-14042001>I would=20
  like to personally thank Phi Lee for being so smart as to=20
  catch</SPAN></FONT></DIV>
  <DIV><FONT face=3DTahoma color=3D#0000ff><SPAN =
class=3D480533203-14042001>the=20
  "subtle" difference between 2 half turns and 1 full turn.  I =
realize=20
  that</SPAN></FONT></DIV>
  <DIV><FONT face=3DTahoma color=3D#0000ff><SPAN =
class=3D480533203-14042001>I as a=20
  mere mortal can not turn a valve behind my head a complete=20
  revolution</SPAN></FONT></DIV>
  <DIV><FONT face=3DTahoma color=3D#0000ff><SPAN =
class=3D480533203-14042001>without=20
  dislocating my wrist.  Apparently he can.  Thank you for=20
  posting</SPAN></FONT></DIV>
  <DIV><FONT face=3DTahoma color=3D#0000ff><SPAN =
class=3D480533203-14042001>yet=20
  another useful message in the never ending "concentrate on=20
  the</SPAN></FONT></DIV>
  <DIV><FONT face=3DTahoma color=3D#0000ff><SPAN =
class=3D480533203-14042001>minutia=20
  instead of the content post" mentality.</SPAN></FONT></DIV>
  <DIV><FONT face=3DTahoma color=3D#0000ff><SPAN=20
  class=3D480533203-14042001></SPAN></FONT> </DIV>
  <DIV><FONT face=3DTahoma color=3D#0000ff><SPAN =
class=3D480533203-14042001>Also, not=20
  related to Phi's post,  It seems to me that the how one would=20
  want</SPAN></FONT></DIV>
  <DIV><FONT face=3DTahoma color=3D#0000ff><SPAN =
class=3D480533203-14042001>a manifold=20
  isolator positioned for mixing gas is </SPAN></FONT><FONT =
face=3DTahoma=20
  color=3D#0000ff><SPAN class=3D480533203-14042001>COMPLETELY separate =
from=20
  the</SPAN></FONT></DIV>
  <DIV><FONT face=3DTahoma color=3D#0000ff><SPAN =
class=3D480533203-14042001>discussion=20
  of how you would want to position it for diving.  If you are=20
  not</SPAN></FONT></DIV>
  <DIV><FONT face=3DTahoma color=3D#0000ff><SPAN=20
  class=3D480533203-14042001>intelligent to be able to position an =
isolator for=20
  mixing gas, you probably shouldn't</SPAN></FONT></DIV>
  <DIV><FONT face=3DTahoma color=3D#0000ff><SPAN =
class=3D480533203-14042001>be mixing=20
  in the first place!</SPAN></FONT></DIV>
  <DIV> </DIV>
  <P><FONT size=3D4><FONT face=3D"Lucida Handwriting"=20
  color=3D#808000>dsmith218@ho*.co*<BR></FONT><FONT face=3DTahoma=20
  color=3D#000080>ICQ# 25409809</FONT></FONT></P>
  <P><FONT face=3D"Monotype Corsiva" color=3D#ff0000 size=3D4>Moderation =
is for the=20
  poor, and the healthy...of which I am neither. - Polver<BR>  =
</FONT></P>
  <DIV class=3DOutlookMessageHeader dir=3Dltr align=3Dleft><FONT =
face=3DTahoma=20
  size=3D2>-----Original Message-----<BR><B>From:</B> Phi Le=20
  [mailto:phi@sk*.be*]<BR><B>Sent:</B> Friday, April 13, 2001 9:15=20
  AM<BR><B>To:</B> adrian scothern; George Irvine; =
techdiver-aquanaut.com; Chris=20
  Tibble<BR><B>Subject:</B> RE: Isolating Manifold =
Question<BR><BR></FONT></DIV>
  <DIV><FONT face=3DArial color=3D#0000ff size=3D2><SPAN=20
  class=3D530011313-13042001>Adrian,</SPAN></FONT></DIV>
  <DIV><FONT face=3DArial color=3D#0000ff size=3D2><SPAN=20
  class=3D530011313-13042001></SPAN></FONT> </DIV>
  <DIV><FONT face=3DArial color=3D#0000ff size=3D2><SPAN =
class=3D530011313-13042001>Do=20
  you think it would work with 1 full turn, or must it be *exactly* =
2 half=20
  turns ?</SPAN></FONT></DIV>
  <DIV><FONT face=3DArial color=3D#0000ff size=3D2><SPAN=20
  class=3D530011313-13042001></SPAN></FONT> </DIV>
  <DIV><FONT face=3DArial color=3D#0000ff size=3D2><SPAN=20
  class=3D530011313-13042001>-Phi</SPAN></FONT></DIV>
  <BLOCKQUOTE style=3D"MARGIN-RIGHT: 0px">
    <DIV class=3DOutlookMessageHeader dir=3Dltr align=3Dleft><FONT =
face=3DTahoma=20
    size=3D2>-----Original Message-----<BR><B>From:</B> adrian
scothern=20
    [mailto:ady@no*.fs*.co*.uk*]<BR><B>Sent:</B> Friday, April 13, =
2001=20
    12:38 PM<BR><B>To:</B> adrian scothern; George Irvine;=20
    techdiver-aquanaut.com; Chris Tibble<BR><B>Subject:</B> Re: =
Isolating=20
    Manifold Question<BR><BR></DIV></FONT>
    <BLOCKQUOTE=20
    style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
      <DIV style=3D"FONT: 10pt arial"> </DIV>
      <DIV><BR></DIV>
      <DIV><STRONG><FONT face=3DArial size=3D2>Well, i've been diving =
with the ISO=20
      two half turns , since having a twin set!, and proberley 3/4 =
OF=20
      Europe dive's The BullShit Paranoia Way, I'm Sorry that i've =
No Idea=20
      about Diving OH DEMI GOD OF THE UNDERWATER WORLD =20
      </FONT></STRONG></DIV>
      <DIV> </DIV>
      <DIV>-- Original Message ----- </DIV>
      <BLOCKQUOTE=20
      style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
        <DIV=20
        style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
        <A title=3Dkirvine@sa*.ne* =
href=3D"mailto:kirvine@sa*.ne*">George=20
        Irvine</A> </DIV>
        <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A=20
        title=3Dady@no*.fs*.co*.uk*=20
        href=3D"mailto:ady@no*.fs*.co*.uk*">adrian scothern</A> ; =
<A=20
        title=3Dchris.tibble@bt*.co*=20
        href=3D"mailto:chris.tibble@bt*.co*">Chris Tibble</A> ; =
<A=20
        title=3Dtechdiver@aquanaut.com=20
        =
href=3D"mailto:techdiver@aquanaut.com">techdiver-aquanaut.com</A> </DIV>
        <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Friday, April 13,
=
2001 11:19=20
        AM</DIV>
        <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> Re: Isolating =
Manifold=20
        Question</DIV>
        <DIV><BR></DIV>
        <DIV><FONT size=3D4>And what bullshit paranoia do you attribute =
the "two=20
        half turns "  to? This is the kind of mindless crap that =
gets=20
        people killed. I will say right here and now that you can come =
up with=20
        no reason to do something that stupid that makes any sense what =
so ever.=20
        Give it a try.</FONT></DIV>
        <DIV> </DIV>
        <DIV> </DIV>
        <BLOCKQUOTE=20
        style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: =
5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
          <DIV style=3D"FONT: 10pt arial">----- Original Message ----- =
</DIV>
          <DIV=20
          style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
          <A title=3Dady@no*.fs*.co*.uk*=20
          href=3D"mailto:ady@no*.fs*.co*.uk*">adrian scothern</A> =
</DIV>
          <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A=20
          title=3Dchris.tibble@bt*.co*=20
          href=3D"mailto:chris.tibble@bt*.co*">Chris Tibble</A> ; =
<A=20
          title=3Dtechdiver@aquanaut.com=20
          =
href=3D"mailto:techdiver@aquanaut.com">techdiver-aquanaut.com</A> </DIV>
          <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Thursday, April
=
12, 2001=20
          7:04 PM</DIV>
          <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> Re:
Isolating =
Manifold=20
          Question</DIV>
          <DIV><BR></DIV>
          <DIV><FONT face=3DArial size=3D2>I have the ISO two half =
turn's on,=20
          and I think the key is to , <STRONG>Know your kit inside =
out</STRONG>,=20
          I've sat in the dark , in full kit for over 30 hours ,every =
new bit of=20
          kit , i go through the same process, and Do know =
my current=20
          config  Insideout , the wife finds this highly =
amusing=20
          if/when she walks in . same goe's for inwater training dives=20
          .</FONT></DIV>
          <DIV> </DIV>
          <DIV><FONT face=3DArial size=3D2>ady</FONT></DIV>
          <DIV> </DIV>
          <BLOCKQUOTE=20
          style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: =
5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
            <DIV style=3D"FONT: 10pt arial">----- Original Message ----- =
</DIV>
            <DIV=20
            style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
            <A title=3Dchris.tibble@bt*.co*=20
            href=3D"mailto:chris.tibble@bt*.co*">Chris Tibble</A> =
</DIV>
            <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A=20
            title=3Dtechdiver@aquanaut.com=20
            =
href=3D"mailto:techdiver@aquanaut.com">techdiver@aquanaut.com</A>=20
            </DIV>
            <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Thursday,
April =
12, 2001=20
            6:28 PM</DIV>
            <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> Isolating =
Manifold=20
            Question</DIV>
            <DIV><BR></DIV>
            <DIV><FONT face=3DArial size=3D2>Just a quickie. I'm just =
about to buy=20
            my first twinset with a manifold. I've dived twins before,=20
            independents because of fiscal reasons (I'm a poor student!) =
What I=20
            need to know is this. Some of the people I have talked to =
who dive=20
            manis only open their iso knob about 1/2 a turn, whilst =
others open=20
            it all the way. Thinking about it I can see advantages and=20
            disadvantages to both:</FONT></DIV>
            <DIV><FONT face=3DArial size=3D2></FONT> </DIV>
            <DIV><FONT face=3DArial size=3D2>All the
way</FONT></DIV>
            <DIV><FONT face=3DArial size=3D2>Adv:    =20
                No risk of turning wrong way</FONT></DIV>
            <DIV><FONT face=3DArial size=3D2></FONT> </DIV>
            <DIV><FONT face=3DArial size=3D2>Disadv:     =
May get=20
            stuck if turned on all way</FONT></DIV>
            <DIV><FONT face=3DArial size=3D2>    =
   =20
                    Have to turn it 3 =
turns (or=20
            whatever)</FONT></DIV>
            <DIV><FONT face=3DArial size=3D2></FONT> </DIV>
            <DIV><FONT face=3DArial size=3D2>Part way</FONT></DIV>
            <DIV><FONT face=3DArial size=3D2>Adv:   =20
                V fast way of isolating</FONT></DIV>
            <DIV><FONT face=3DArial size=3D2></FONT> </DIV>
            <DIV><FONT face=3DArial size=3D2>Disadv:    =
Can turn it=20
            the wrong way </FONT></DIV>
            <DIV><FONT face=3DArial=20
            =
size=3D2>          &nbs=
p;    Not=20
            having it open all the way may limit equalisation across the =

            manifold.</FONT></DIV>
            <DIV><FONT face=3DArial size=3D2></FONT> </DIV>
            <DIV><FONT face=3DArial size=3D2>Now any or all of this may =
be=20
            unmitigated rubbish, but it's just what I was thinking about =
last=20
            night.</FONT></DIV>
            <DIV><FONT face=3DArial size=3D2></FONT> </DIV>
            <DIV><FONT face=3DArial size=3D2>Any comments/suggestions as =
to how best=20
            to do it?</FONT></DIV>
            <DIV><FONT face=3DArial size=3D2></FONT> </DIV>
            <DIV><FONT face=3DArial size=3D2>As this is my first post, =
go easy on me=20
            - I'm still learning!</FONT></DIV>
            <DIV><FONT face=3DArial size=3D2></FONT> </DIV>
            <DIV><FONT face=3DArial size=3D2>Many
thanks,</FONT></DIV>
            <DIV><FONT face=3DArial size=3D2></FONT> </DIV>
            <DIV><FONT face=3DArial size=3D2>Chris</FONT></DIV>
            <DIV><FONT face=3DArial size=3D2></FONT> </DIV>
            <DIV><FONT face=3DArial size=3D2></FONT> </DIV>
            <DIV><FONT face=3DArial size=3D2>--</FONT></DIV>
            <DIV><FONT face=3DArial size=3D2>It takes a big man to cry, =
but it takes=20
            a bigger man to laugh at that man.<BR></DIV>
            =
<DIV><BR></DIV></BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE></BLO
CKQUOTE></BLOC=
KQUOTE></BLOCKQUOTE></FONT></BODY></HTML>

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