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This is a multi-part message in MIME format. ------=_NextPart_000_00A3_01BE1C80.82012FA0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit I just finished my trimix diver and trimix instructor course. Boy it was hard week! But I got to use a lot of different gear, because I kept having to return the stuff I borrowed, then find someone else that would loan me gear so I could finish the course. Now that I've had an entire week to try a number of gear configurations, I'm pretty much an expert on gear configurations. I'm ready to buy 3 complete tech diving setups (one for myself, and two for students to use). So here's what I'm looking for: 1. Doubles: I'm looking for those really heavy humongous steel ones that hold lots of air (especially when overfilled). I'll also want some of those burst disks that won't blow, no matter how high the pressure goes (I think I can cut them myself from steel shim stock, but I'd rather buy them from someone who knows what they're doing). 2. Manifold: It's really hard to reach the valves, so I think a manifold of any kind is a bad idea. Instead I'm going to train my students to use independent tanks. Then if there's a freeflow you don't have to worry about shutting the reg down, just switch to the good one (if you're not already breathing it), and end the dive when you reach thirds. You also have protection from a manifold failure that dumps all of your air faster than you can shutdown a reg -- I've heard about this problem. I wish there were a way to make the left-hand tank have its valve stick out the left side and rotate counterclockwise -- any ideas? 3. Harness/BC I'll be looking for something like a standard ADV with lots of D rings added to it. I like soft cummerbunds and the ability to get out of the rig quickly by several different methods provided by multiple disconnects. Any ideas on how to add another bladder to one of these Tec BCs? I'll want two power inflators, O2 clean of course. 4. Regulators: For each rig, I'll need one reg with a right-handed second stage, and one with a left handed second stage, each with gauges. I'll need a two BC inflator hoses on each (a total of four - primary and backup BC, drysuit, and bag inflator/airtool). 5. Stage bottles: I've seen the DIR tape and I that think their way of attaching clips to the stage bottles is dangerous. That rope looks flimsy, and what if it comes untied or unravels in the water? I'm going to use steel stages, and weld clips directly to them. That way, the bottom clip can't slide around like they do when attached with hose clamps, and the top one can't slip off the tank valve. The clips should be the extra large gated snaps, because they're much easier to attach that the slide "dog" type snaps. I'm looking for steel 72s for this, O2 clean of course, with the green bumper stickers. 6. Stage Regs: Looking for just about anything. I'll color code them and put hose wraps on myself. On the high O2 one, I'll use either a little bag to cover it up or a piece of surgical tubing on the mouthpiece. I'll give the students ample opportunity to try several methods of coding the regs for easy identification. The high O2 mix will go on the right, and the lower will go on the right. That way, the student need only remember that the first mix will be the right tank at his left hand and at the 30 foot stop he should switch to the right tank near his right hand. Of course the left tank valve will turn counterclockwise with this orientation. 7. Lights: Helmet mounted lights, five of them. The primary will be in the center and of 50 watt power. There will be two wide beam lights and two narrow beam lights. All will burn at the same time. This is the best way, because if one fails, you're not in darkness trying to fumble for a light clipped to a tank D ring that's nearly impossible to reach anyway. 8. Mixes: I'll teach trimix using the poorman's 17% helium mix, but only to about 240 feet. This gives a narcosis depth of about 190. Since most people are good on air to about 220, that should be good. I'll give them a checkout dive on air to 220 first. That will tell me if they'll be ok on the poorman's mix at 240, and will give them an appreciation for the mix. We'll switch to air for deco at the first stop or at 180, whichever is shallower, then to EANx75 at 30 feet. I don't want to use EANx80 at 30 feet, because if the students have bad buoyancy control and drift down to 40, they might tox. I'll also be teaching an "expert" deep air course. It will be really cool. For safety, we'll train in the pool, simulating narcosis, by smoking reefer just before getting in the water. Then we'll do shallow open water dives, reducing the number of bong hits as we increase the depth. Before you know it, my students will be experts at diving to 270 on air, without drugs or alcohol, and to intermediate depths either way. Boy, my students are going to be the best! Sincerely, StrokeMe, Former Administrative Assistant Underwater Applications Corp ------=_NextPart_000_00A3_01BE1C80.82012FA0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD W3 HTML//EN"> <HTML> <HEAD> <META content=3D"text/html; charset=3Diso-8859-1" = http-equiv=3DContent-Type> <META content=3D'"MSHTML 4.72.3110.7"' name=3DGENERATOR> </HEAD> <BODY bgColor=3D#ffffff> <DIV><SPAN class=3D940290521-30111998><FONT color=3D#000000 face=3DArial = size=3D2>I just=20 finished my trimix diver and trimix instructor course. Boy it was hard = week! But=20 I got to use a lot of different gear, because I kept having to return = the stuff=20 I borrowed, then find someone else that would loan me gear so I could = finish the=20 course. Now that I've had an entire week to try a number of gear = configurations,=20 I'm pretty much an expert on gear configurations. I'm ready to buy 3 = complete=20 tech diving setups (one for myself, and two for students to use). So = here's what=20 I'm looking for:</FONT></SPAN></DIV> <DIV><SPAN class=3D940290521-30111998><FONT color=3D#000000 face=3DArial = size=3D2></FONT></SPAN> </DIV> <DIV><SPAN class=3D940290521-30111998><FONT color=3D#000000 face=3DArial = size=3D2>1.=20 Doubles: I'm looking for those really heavy humongous steel ones that = hold lots=20 of air (especially when overfilled). I'll also want some of those burst = disks=20 that won't blow, no matter how high the pressure goes (I think I can cut = them=20 myself from steel shim stock, but I'd rather buy them from someone who = knows=20 what they're doing).</FONT></SPAN></DIV> <DIV><SPAN class=3D940290521-30111998><FONT color=3D#000000 face=3DArial = size=3D2></FONT></SPAN> </DIV> <DIV><SPAN class=3D940290521-30111998><FONT color=3D#000000 face=3DArial = size=3D2>2.=20 Manifold: It's really hard to reach the valves, so I think a manifold of = any=20 kind is a bad idea. Instead I'm going to train my students to use = independent=20 tanks. Then if there's a freeflow you don't have to worry about shutting = the reg=20 down, just switch to the good one (if you're not already breathing it), = and end=20 the dive when you reach thirds. You also have protection from a manifold = failure=20 that dumps all of your air faster than you can shutdown a reg -- I've = heard=20 about this problem. I wish there were a way to make the left-hand tank = have its=20 valve stick out the left side and rotate counterclockwise -- any=20 ideas?</FONT></SPAN></DIV> <DIV><SPAN class=3D940290521-30111998><FONT color=3D#000000 face=3DArial = size=3D2></FONT></SPAN><SPAN class=3D940290521-30111998><FONT = color=3D#000000=20 face=3DArial size=3D2></FONT></SPAN> </DIV> <DIV><SPAN class=3D940290521-30111998><FONT color=3D#000000 face=3DArial = size=3D2>3.=20 Harness/BC I'll be looking for something like a standard ADV with lots = of D=20 rings added to it. I like soft cummerbunds and the ability to get out of = the rig=20 quickly by several different methods provided by multiple disconnects. = Any ideas=20 on how to add another bladder to one of these Tec BCs? I'll want two = power=20 inflators, O2 clean of course.</FONT></SPAN></DIV> <DIV><SPAN class=3D940290521-30111998><FONT color=3D#000000 face=3DArial = size=3D2></FONT></SPAN><SPAN class=3D940290521-30111998><FONT = color=3D#000000=20 face=3DArial size=3D2></FONT></SPAN> </DIV> <DIV><SPAN class=3D940290521-30111998><FONT color=3D#000000 face=3DArial = size=3D2>4.=20 Regulators: For each rig, I'll need one reg with a right-handed second = stage,=20 and one with a left handed second stage, each with gauges. I'll need a = two BC=20 inflator hoses on each (a total of four - primary and backup BC, = drysuit, and=20 bag inflator/airtool).</FONT></SPAN></DIV> <DIV><SPAN class=3D940290521-30111998><FONT color=3D#000000 face=3DArial = size=3D2></FONT></SPAN><SPAN class=3D940290521-30111998><FONT = color=3D#000000=20 face=3DArial size=3D2></FONT></SPAN> </DIV> <DIV><SPAN class=3D940290521-30111998><FONT color=3D#000000 face=3DArial = size=3D2>5.=20 Stage bottles: I've seen the DIR tape and I that think their way of = attaching=20 clips to the stage bottles is dangerous. That rope looks flimsy, and = what if it=20 comes untied or unravels in the water? I'm going to use steel stages, = and weld=20 clips directly to them. That way, the bottom clip can't slide around = like they=20 do when attached with hose clamps, and the top one can't slip off the = tank=20 valve. The clips should be the extra large gated snaps, because they're = much=20 easier to attach that the slide "dog" type snaps. I'm = looking=20 for steel 72s for this, O2 clean of course, with the green bumper=20 stickers.</FONT></SPAN></DIV> <DIV><SPAN class=3D940290521-30111998><FONT color=3D#000000 face=3DArial = size=3D2></FONT></SPAN><SPAN class=3D940290521-30111998><FONT = color=3D#000000=20 face=3DArial size=3D2></FONT></SPAN> </DIV> <DIV><SPAN class=3D940290521-30111998><FONT color=3D#000000 face=3DArial = size=3D2>6.=20 Stage Regs: Looking for just about anything. I'll color code them and = put hose=20 wraps on myself. On the high O2 one, I'll use either a little bag to = cover it up=20 or a piece of surgical tubing on the mouthpiece. I'll give the students = ample=20 opportunity to try several methods of coding the regs for easy = identification.=20 The high O2 mix will go on the right, and the lower will go on the = right. That=20 way, the student need only remember that the first mix will be the right = tank at=20 his left hand and at the 30 foot stop he should switch to the right tank = near=20 his right hand. Of course the left tank valve will turn counterclockwise = with=20 this orientation.</FONT></SPAN></DIV> <DIV><SPAN class=3D940290521-30111998><FONT color=3D#000000 face=3DArial = size=3D2></FONT></SPAN> </DIV> <DIV><SPAN class=3D940290521-30111998><FONT color=3D#000000 face=3DArial = size=3D2>7.=20 Lights: Helmet mounted lights, five of them. The primary will be in the = center=20 and of 50 watt power. There will be two wide beam lights and two narrow = beam=20 lights. All will burn at the same time. This is the best way, because if = one=20 fails, you're not in darkness trying to fumble for a light clipped to a = tank D=20 ring that's nearly impossible to reach anyway.</FONT></SPAN></DIV> <DIV><SPAN class=3D940290521-30111998><FONT color=3D#000000 face=3DArial = size=3D2></FONT></SPAN> </DIV> <DIV><SPAN class=3D940290521-30111998><FONT color=3D#000000 face=3DArial = size=3D2>8.=20 Mixes: I'll teach trimix using the poorman's 17% helium mix, but only to = about=20 240 feet. This gives a narcosis depth of about 190. Since most people = are good=20 on air to about 220, that should be good. I'll give them a checkout dive = on air=20 to 220 first. That will tell me if they'll be ok on the poorman's mix at = 240,=20 and will give them an appreciation for the mix. We'll switch to air for = deco at=20 the first stop or at 180, whichever is shallower, then to EANx75 at 30 = feet. I=20 don't want to use EANx80 at 30 feet, because if the students have bad = buoyancy=20 control and drift down to 40, they might tox.</FONT></SPAN></DIV> <DIV> </DIV> <DIV><SPAN class=3D940290521-30111998><FONT color=3D#000000 face=3DArial = size=3D2>I'll=20 also be teaching an "expert" deep air course. It will be = really cool.=20 For safety, we'll train in the pool, simulating narcosis, by smoking = reefer just=20 before getting in the water. Then we'll do shallow open water dives, = reducing=20 the number of bong hits as we increase the depth. Before you know it, my = students will be experts at diving to 270 on air, without drugs or = alcohol, and=20 to intermediate depths either way.</FONT></SPAN></DIV> <DIV><SPAN class=3D940290521-30111998><FONT color=3D#000000 face=3DArial = size=3D2></FONT></SPAN> </DIV> <DIV><SPAN class=3D940290521-30111998><FONT color=3D#000000 face=3DArial = size=3D2>Boy,=20 my students are going to be the best!</FONT></SPAN></DIV> <DIV> <P><FONT face=3DArial size=3D2>Sincerely,</FONT> <BR><FONT face=3DArial = size=3D2><SPAN=20 class=3D940290521-30111998><FONT color=3D#000000 face=3DArial=20 size=3D2>StrokeMe</FONT></SPAN>, <SPAN class=3D940290521-30111998><FONT=20 color=3D#000000 face=3DArial size=3D2>Former </FONT></SPAN><SPAN=20 class=3D940290521-30111998><FONT color=3D#000000 face=3DArial = size=3D2>Administrative=20 Assistant</FONT></SPAN></FONT> <BR><FONT face=3DArial = size=3D2>Underwater=20 Applications Corp</FONT></P> <P><FONT face=3DArial size=3D2></FONT> </P></DIV></BODY></HTML> ------=_NextPart_000_00A3_01BE1C80.82012FA0-- -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. 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