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The "tricks" ar not having to answer to anyone, worry about "liability", or otherwise compromise in any way. If one is in the physical condition that I am in, one can do the deco I do, and I see no reason in hell not to be in that condition, and the older you are , the easier it is since that means you have been doing it longer and therefor have the aerobic base. Otherwise, in my opinion, one should not be even deco diving in the fist place and certainly tyring to design a deco program for cows and pigs is a waste of time - nothing will work, nor should it. My only tricks are : 1) showing up every day and working out, and 2) automaticly discarding ANYTHING that the dive industry slops out as self-serving, deluded bullshit. These two "tricks" have proven to be the key. Simon, you personally could do my deco with no problem. Simon Murray wrote: > > Hi Phi, > > I purchased Decoplanner about two months ago, just before I did a series of (for me) long, > 70m cave dives. > > I noticed the same thing as you i.e. I could begin to predict pretty accurately what would > happen to the deco schedule by varying the bottom time and, for the first time, I realised > what George means when he has been talking about the "shape" of the deco curve. > > I had previously been using Zplan and it never seemed to keep a constant shaped deco curve > or, more importantly, a deco curve who's behavior I could begin to predict in my head. > > Just for kicks, I ran George's recent 18k dive through Decoplanner and, clearly, he > clearly still has a few tricks up his sleeve. > > Simon > > ----- Original Message ----- > From: Phi Le <phi@sk*.be*> > To: Scott Gudmundsen <gudmund@si*.co*> > Cc: <techdiver@aquanaut.com> > Sent: Monday, April 24, 2000 11:32 AM > Subject: RE: Deco in your head ? > > > Scott, > > > > From the replies I have received, apparently a few people have already been > > doing this for a while with no problem. I just wish that I had done this > > exercise sooner. > > > > Another thing I started to work on is plot all of these deco schedule on *1* > > single chart. X-axis is "end-of-run-time", and Y-axis is "depth". Depending > > how good your eyes are, you could see *all* of the deco schedules in one > > shot. You will see some overlaps, trends, etc., and I will leave you guys to > > draw your own conclusions. > > > > The next step is assume a reasonable surface interval period and add curves > > to this matrix. There should be some overlapping with the next depth/BT > > curve depending on the SI. > > > > I know it took a few hours of work, but I won't need to calculate each time > > any more. In addition, I have included the mixing PP on the table for the BT > > trimix, so I could mix the gas as well without whipping out the calculator. > > > > Lastly, GUE Decoplanner/Decoblender made it so easy to do this exercise with > > its super-easy-to-use interface. It is the best planner I have used so far. > > > > -Phi > > > > -----Original Message----- > > From: Scott Gudmundsen [mailto:gudmund@si*.co*] > > Sent: Monday, April 24, 2000 4:17 AM > > To: Phi Le > > Cc: techdiver@aquanaut.com > > Subject: Re: Deco in your head ? > > > > > > Phi, > > > > Best post I've read for several months! Thank you for sharing! > > > > I've often wondered how the heck he does that, too. Apparently George's > > brain is programmed for numbers and tables anyway, as he's some kind of > > financial/stock broker type number cruncher when his hair is drying and his > > tanks are filling... maybe he'll tell us what he does to pay for helium once > > he reads this post! > > > > Scott Gudmundsen > > Vernal, Utah > > > > > > ----- Original Message ----- > > From: Phi Le <phi@sk*.be*> > > To: List - Technical Diver <techdiver@aquanaut.com> > > Sent: Sunday, April 23, 2000 4:50 PM > > Subject: Deco in your head ? > > > > > > > I am sure a lot of people already done it, but just want to share > > something > > > for the guys haven't yet... > > > > > > A while back, George was posting about he had somehow calculated his deco > > > schedule in his head *while* decoing in the water. I thought to myself > > "How > > > the hell do I learn how to do that ?" > > > > > > And I still haven't a clue until I did a little project over the Easter > > > week-end with the GUE Decoplanner. I wanted to create a set of trimix > > tables > > > so I don't have to fire up the laptop everytime I need to calculate the > > deco > > > schedule. > > > > > > So I decided on a fix MOD PPO2 (1.2), a fix END (30m) and fix 2 deco gases > > > (50, 100%) to be used independently of MOD. For each increment of 5m from > > 50 > > > to 100m, I calculated the deco schedule for different BT in increments of > > 5 > > > min. I also generated alternative schedules for each step if I had lost > > one > > > of the deco gases. In addition, I generated tables for each BT gas at PPO2 > > > of 1.4 (10m more) in case of needing to go deeper for whatever reason. > > > > > > After a while, I could "guestimate" the deco schedule of the next depth or > > > BT increment pretty accurately. > > > > > > I am not saying that I could calculate my schedule in my head like George, > > > but if I had dropped the deco table (done it before) I could whip out > > > another table for another depth or time, estimate it accurately and not be > > a > > > decoweenie. And I feel that I only need to memorize 2 or 3 tables and > > could > > > inter/extrapolate the rest easily. > > > > > > I guess the tough part will be when I add a third deco gas for the deeper > > > dive. Wonder how that would affect everything so far ? > > > > > > If you see any flaws, please comment. > > > > > > -Phi > > > > > > -- > > > Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. > > > Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'. > > > > > > > > > -- > > Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. > > Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'. > > -- > Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. > Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'. -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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