Mailing List Archive Mailing List Archive
Roger, I thought that one was obvious enough that I didn't need the ;-), but I should have remembered this was techdiver. You are correct and unfortunately some of the readers probably needed your post to figure that out. The bag is a surface marker not a lift for a decompression bar. I guess all the guys that need extra inflation also carry there portable 50lb deco bar as well. Does a transpack have designated drings to hold that accessory??? You guys try to make diving way harder than it really is. Ya'll need to learn to bottle breathe and truly enjoy a SIMPLE dive. Regards, Jody PS. I left out the ;-) again. See if you can find where it goes. At 10:36 AM 7/23/96 -0400, Roger Lacasse wrote: > > >Hi, here is the physicist giving a physics lesson again! > > What is "lifting the bag is the weight of the water that you are displacing. >Remember this guy called Archimede????? > > The difference in weight of the inflating gas is insignificant compared to >that of even just a few cc's of water. > >You will have to hold just as much since you'll be displacing the same >amount of water and it will not get to the surface quicker. Using helium >will not make the slightest difference in deployment time. > > I'm far from being a "pro" diver but, when I see something that is basic >physics, that I thought was part of every basic scuba course, so badly >understood, I can not but jump on it. > >Cheers > > >On Mon, 22 Jul 1996, Jody Everett wrote: > >> Try using Helium for inflation. It is a lighter gas so you won't have to >> hold back as much and it should also get to the surface quicker. Since it >> will get to the surface quicker you can hit the golf course a little earlier. >> >> Regards, >> Jody >> >> At 01:02 PM 7/22/96 -0400, Grant Wilkinson wrote: >> >Some time ago,there was a great thread on this list (I think) about >> >drifting deco stops using lift bags, and how best to rig the reel. A Brit >> >on the list told of using webbing because it doesn't tangle, and I am >> >taking his idea to heart. >> > >> >My question is, how to do you get enough inflation in the bad. We >> >frequently don't have anything solid to temporarily tie the bad to while >> >inflating it, so after a few shots of air, it is impossible to hold down. >> >I have heard of using CO2 inflators. I would appreciate any advice from >> >those who do this. >> > >> >-- >> > >> >Grant Wilkinson >> >Ottawa, Canada >> >grantw@fr*.ca*.ca* >> >-- >> >Send mail for the `techdiver' mailing list to `techdiver@terra.net'. >> >Send subscription/archive requests to `techdiver-request@terra.net'. >> > >> > >> >> -- >> Send mail for the `techdiver' mailing list to `techdiver@terra.net'. >> Send subscription/archive requests to `techdiver-request@terra.net'. >> > > [\] > | >=================================================================^^(_)^^^^^^^^^ > Roger Lacasse "I found the meaning of life! > Foster Radiation Laboratory, It's in the eyes of my wife and kids." > McGill University, Office: (514) 398-7025 > 3559 University street, Fax: (514) 398-7022 > Montreal, Qc., Canada. e-mail: roger@ph*.mc*.ca* > H3A 2B1 http://spiff.physics.mcgill.ca/scuba.html >=============================================================================== > > > > >
Navigate by Author:
[Previous]
[Next]
[Author Search Index]
Navigate by Subject:
[Previous]
[Next]
[Subject Search Index]
[Send Reply] [Send Message with New Topic]
[Search Selection] [Mailing List Home] [Home]