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This is a multi-part message in MIME format. --------------18D39710417E2E22FC61B681 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Hi All, I have been hanging around and reading posts for a while now. This is the first opportunity I have had to contribute, so here goes: We use the AP-Valves type D-SMB's all the time, without any problems. Instead of filling the D-SMB by purging the second stage with the mouthpiece facing upwards, I "shake-out" the D-SMB so that it is unfolded, in front and slightly above me and clip it onto my reel. I then tilt my head and exhale into the 'hole' at the bottom. From 90 feet it only takes one small puff to ensure the D-SMB reaches the surface fully inflated. Obviously at a shallower depth, you would need a couple of exhalations. This should eliminate and problems with regs freezing and with practise, you should be able to do it while maintaining neutral buoyancy. Regards, Simon Murray Peter Fjelsten wrote: > John Grogan sendte noget til mig den 18:30 29-04-99 som indeholdt pr�cis . > .. . > >Has anyone got experiance of auto inflate delayed smbs? I believe someone > >makes a pyramid shape one which provides good viz in choppy water and is > >particularly suited to deco > > > >Any info? Your now going to tell me its not dir? > ------------------------------------------------------------- > - Hi, Vinnie, I thought you'd left? :-) > > _I_ use a auto inflate DSMB for the following reasons: > � I do not have to purge a second stage with the mouthpiece facing upwards, > something that can easily make the reg freeze in our waters (0-15 degrees > C): this is the primary reason. > � I have an _extra_ unobtrusive means of getting to the surface. > � It's easier to inflate the DSMB if I were to have a buddy on the long > hose > � It's convenient to fill even in shallow water. > > Backdrafts: > � It could auto inflate but I've never heard of this happening (I think the > possibility is remote) > � It's a bit more bulky (I carry mine on the back crotch strap D-ring) > � If the cylinder fails, it's useless (I carry a _small_ saussage bungied > to my backplate on its left side: I can easily reach it but it's totally > unobtrusive: theoretically I don't need this as my buddy has the bachup but > it's so small and out of the way I don't mind) > > I use the JD AutoMark DSMB as it's much taller and hence more visible and > less subject to chopping wave action. > > I see Halcyon makes one you plug you inflator into which would prevent the > freeze-up, but from what I can see it can be a bit tricky not to get stuck > when inflating it. > > ------------------------------------------------- > 1. They're not DIR > > - Why? > > 2. If you forget to fill the inflate bottle, they're useless - you can't do > a manual inflate. Also, as just about everyone had DIN and the bottle was > A-clamp, there were problems filling it. > > - Use an adaptor. > > 3. They often unravel during a dive - or more particularly when you jump in > and sometimes you just don't realise that it's 'flapping in the breeze' > behind you > > - Mine doesn't: very strong velcro fastening. > > 4. It once inflated at 30m on a dive. Thankfully, I was inside a wreck at > the time and I just got pinned to the ceiling. > > - Never happend with my make. > > My advice is to get a self-sealing buoy - like the AP Valves one. If you > keep the tension on it on ascent, it will stand clear in the water (up to > 1m clear) and be more visable than a pyramidal one. Certainly from my > experiences on boats, these are the easiest ones to spot. > > - Mine stands at least 1 metre tall. > > Hilsen (Rgds.), > > Peter Fjelsten > -- > Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. > Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'. --------------18D39710417E2E22FC61B681 Content-Type: text/x-vcard; charset=us-ascii; name="simonm.vcf" Content-Transfer-Encoding: 7bit Content-Description: Card for Simon Murray Content-Disposition: attachment; filename="simonm.vcf" begin:vcard n:Murray;Simon tel;fax:883 0213 tel;home:083 326 4729 tel;work:269 4040 x-mozilla-html:FALSE org:Horizon Equity Partners adr:;;;;;; version:2.1 email;internet:simonm@ho*.co*.za* title:Investment Associate x-mozilla-cpt:Netsacpe AOL Instant Messenger;2 fn:Simon Murray end:vcard --------------18D39710417E2E22FC61B681-- -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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