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With respect to OMS 100 twin Bladder. I also have one. I bought it to use for twin tank diving in tropical water. It has a twin bladder for redundancy. However, the dump has jammed open. When you remove the bungies, they are too big. They are in a tub in my spare room if you want them. I cannot with peace of mind sell them to any one. I personally use Dive-rite rec wings (65#) or trek wings (45#), depending on which tanks I am using. Where I am diving, it is not practical to wear a dry suit (water temp 30C), hence the lack of wing redundancy is a worry. But you need a reliable wing. Where are you diving? Read the DIR stuff, B4 you buy much more gear. Also have a good look around. Jeff the Darwinian. At 14:32 6/05/00 -0400, you wrote: >I just wanted to add some thing I have learned from experience that may help >save some trouble. When you take the bungees of the oms bladder you mess >with the way its designed to work. The dump elbow is on the front of the >bladder, (notice where halcyons is - on the back) this position makes it >impossible to dump gas unless you are upright or on your back, the large >size of the bladder behind the neck caused the air to move quickly, way to >quick from on side to another if you did much turning, or playing around. >This really stunk, getting neutral was hard as billw wrote the bladder wants >to raise your head up, or the "bubble wants to rush to the bottom and pop >your bottom up. > >I would never - having tried to do it my self - advise any one to take the >bungees off there bladder, it just don't work right. If its designed to work >with bungees it will work horrible with out them I have decided that I'm >buying a halcyon. > > >Paul Komrowski > >PS- 1 100# OMS bladder for sale, with no bungees. > >-----Original Message----- >From: bdi@bd*.co*.au* [mailto:bdi@bd*.co*.au*] >Sent: Saturday, May 06, 2000 3:35 AM >To: techdiver@aquanaut.com >Subject: Re: advise for new tekkie > >At 09:59 5/05/00 , Ee Michael wrote: >>hi there, >>have a few qus that i would like to clarify on equipemt and the DIR >configuration with the more expereinced ones out there... >> >>1) what is the recommanded lift of a bladder ? i'm from singapore and >currently studiyng in australia...a tek course of cos means we need our own >equipemnt so i was thinkning of a wing bladder. what is the recommanded lift >? 45 pounds ,65 pounds or 100 pounds ? > >55 lbs > > >>2) IATND recommanded a 22.5 kg lift bag, i have a 25 kg lift bag already >and if i go into tek diving , i think i'd go into only the noromixc with >tehnical wreak level.This means i 'd have max of a double 13 or 15 and 2 >stage tanks ( maybe 1 for travel mix ., the other for deco ) , is a 25 kg >lift bag sufficient in our waters ? > >You would properly be diving with manifolded al 80s. >and alloy stages. The 25Kg lift bag is ample. > > >>3) from australia and around asia , the maximum we ever need is a semi-dry >suit. > >Wrong. In most of Australia, if you dive deep and do >decompression dives, you will get chilled in a wetsuit. >We dive dry. > >>Thus the ques of redundencay comes in ,do we OR do we NOT need a double >baldder ? the issue of it being a failure point does not make sense to me as >we can just connect one inflator at a time rite ? > >You do NOT need a double bladder. If you dive a >wetsuit you should be using aluminium 80s manifolded >together. And alloy slings. > > >>4) for the convetional backaplte, if we use singles , we need a singel tank >adaptor..but how bad is the drag ? > >Of the adaptor? Undetectable. > >>5) for wings floation, it is known that it has a prolemn enabling a diver >to maitain a vertical postion while on surface > >Wrong - who's teaching you this crap? > >>...are weights necessary on the tank cam bands to help bring the diver into >a vertical postion ? > >No. > >>6) bungees or without bungees on bladder ? why ? the DIR manner said that >the bungees prevents the hose from inflating properly but this means that >the diver have tied them too tight !!! so bungees or without bungees ? we >can always losen the bungee right ? >>aslo i have tried infltating an OMS baldder with bungee orally and there is >no problem with it !! > >Michael what do you really want? Advice from experts >or the opportunity to defend a piece of crap? > >You ask about the drag from a tank adaptor but are >prepared to ignore it when it comes to bungy wings. >What gives? Made up your mind already? There's no >comfort for you here, then. > >>7) wings flotation have the problem of tank wrapping when we use singles or >very small doubles > >Why would you ever use very small doubles? Get real. > >>..is this issue exaggerated or serious ? can we use the bungee to reduce >this effect ? > >This issue is very serious. It means you don't have enough >sense to use a smaller wing with a single tank. > >>8) i feel that the Harothigan method is very comprehenisve but i've been >thinkning on the issue of the bungees. with bungees , >>a)the bladder is at a miuimin size >>b) one can re-adjust the air in the bladder to compenste for stages >>c) minimises wing wrapping >> >> >>cooments and advise please > >Michael, sit down, shut up and listen. > >Bungee wings exert drag when you're swimming. If the bungees are >loose enough not to restrict oral inflation at depth they are >not tight enough to do what OMS claims they do and are >therefore totally unecessary. WHen you do inflate them, >they constrict the bag before full bouyancy is achieved and >then blow off the OP valve. Because they're crinkled up they >trap gas and are hard to fully deflate - which can be a bitch >on deco. They piut the bouyancy beneath the tanks, rather >than around them. Not stable. If you finally get rid of the bungy, >you'll find that the bladder is too wide behind the neck and your >bouyancy is never right. The bungee wings are also implicated in >training deaths. > >Flat wings - halcyon or diverite, sit flat against the >tanks and wrap up round them at the outer edges - as low profile >and streamlined as you can get. > > >Who told you about the bugy wings being OK? The same person >who maintains wings "has a prolemn enabling a diver to >maitain a vertical postion while on surface." Who's telling you >this stuff? > >If you're in Sydney give me a call on 02 9977 0307. I have some >time free next week and can show you why the DIR rig works and >the bungeees don't. You'll have to cough up the name of your >instructor though. > >rgds billyw > > > >>thanks >>mike >> >>ps : guide me according to the qus asked ok...easier for me to undersatnd >!!! >> >>________________________________________________________________________ >>Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.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'. > -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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