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Tia > WHY WOULD YOU BE SPIRALING OUT OF CONTROL > TIA > I used to use two Catalina 70cuft cylinders, which were very negative and very small, but I needed no weightbelt. If you set them high enough to reach the isolator you are very top heavy as well as having a lot of weight on your back. What happened to me several times (inside a wreck whilst trying to keep balanced etc) I roll over head first and then end up upside down on my back in the silt. Usually with a line wrapped around my leg. Totally un-cool. I think "Spiraling out of control" is an appropriate description. This is mainly a problem in shallow water when their is no air in the BC (which helps counter the weight on your back). I now use two 100cuft faber cylinders which are less negative, and longer so I get better weight distribution. Don't have problems with them and still need little lead (3kg V-block) or zero with a deco bottle. Guy > ---------- > > From: Guy Wittig <Guy.Wittig@Au*.Su*.CO*> > > To: jeffmeo@ba*.ne* > > Cc: techdiver@aquanaut.com > > Subject: Re: weight belt > > Date: Thursday, April 16, 1998 7:52 PM > > > > I dive with no weightbelt because I use steels and I am dense (come > on, > have > > a go !). > > > > There are a couple of isses: > > 1. Bouyancy in an emergency > > You can't dump a back mounted weight. For recreational diving this is > bad > > > kama. For techdiving with a deco ceiling, the last thing you want to > do > is > > be buoyant at your deco depth so you usually don't _plan_ to dump your > > > weight (unless you have to trade getting drowned for getting bent). > This > > means that if your BC fails you need an alternate source of bouyancy. > A > dry > > suit will suffice if you use one, or if you dive with a wet suit you > can > use > > a dual bladded BC, as a last resort a lift bag can be used - this is > risky > > but beats drowning. Remember, if you are heavily negative on the > bottom > you > > need a solid plan to deal with loss of primary bouyancy. > > > > 2. Balance > > If you have a lot of weight on your back, or higher up than your > waist, > you > > may find yourself spiraling out of control from time to time, or at > least > > > spending a lot of effort (and gas) maintaining balance. This may be an > issue > > to watch. > > > > Guy > > > > > > > I'm just starting to get into "tech" diving and recently bought a > wing > > > type BC with a stainless backplate. My question is, since the > stainless > > > back plate weighs about 6lbs, I now only need another 14 lbs to get > down > > > using a wetsuit. Would it be ok to eliminate the weight belt and > attach > > > lead directly to the backplate, such as the P-weight? I've been > told > yes > > > by some and no by some. Any opininions? > > > Thanx, > > > Jeff > > > > > > > > > > ========================================================================== > == > > > == > > ,-_|\ Guy Wittig > > / \ > > \_,-\_+ <- last seen here > > v > > > ========================================================================== > == > > > -- > > Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. > > Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'. ---------------------------------------------------------------------- Guy Wittig 33 Berry Street Phone: 02 9466 9486 Project Manager North Sydney Fax: 02 9466 9411 Sun Professional Services NSW Australia Mobile:0419 435 795 ---------------------------------------------------------------------- -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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