Mailing List Archive

Mailing List: techdiver

Banner Advert

Message Display

Date: Fri, 02 Jun 2000 18:16:24 +1000
To: techdiver@aquanaut.com
From: Simon L Hartley <shartley@sc*.ed*.au*>
Subject: Single tank reg question (was RE: 2nd stages)
Hi all,

I've been following the Apeks threads with interest.  Posted a question
last week but by the time I got the "Message approval" response the thread
had moved on and most of my questions answered.  

One thing that wasn't covered (because this really only matters to a rec
diver (single tank) like me), how would an Apeks US-4 handle supplying two
second stages at depth (with high air consumption).  In a DIR tech setup
there is only one second stage per post (often working at greater depths
obviously).  I'm sure a couple of divers in a stressful situation could
suck a lot of air in 20-30 metres (maybe more than a single experienced
diver a lot deeper, even working hard).  Any experience?

I've looked at going over to a diaphragm style reg for a while.  My current
piston first stage (MK10) is quite high maintenance (three services per
year) with the sort of diving I do.  The Apeks appeals because of the
simpler design (other firsts I've looked at look quite fiddly (not at all
easy to service and lot to go wrong)).  

H/Y valves are undesirable.  I like to keep things as simple as possible.

At 20:07 1/06/2000 -0500, s_lindblom@co*.co* (Steve Lindblom) wrote:
>separate effort adjustments, which allow detuning. Cheaper ones like the SP
>190/380 aren't balanced, are less sensitive, and can also be detuned even
>further if desired. It's the ones in the middle that give the trouble.

So the old R190's are unbalanced.  Wondered what everyone was complaining
about ("free flows, what free flows?")  :-)

Simon

Simon L Hartley
RSM Unit Web Administrator\First Year Course Coordinator
Associate Lecturer
School of Resource Science and Management
Southern Cross University
P.O. Box 157
Lismore NSW, Australia 2480
Ph: (02) 66203251 or (61 66) 203 251
Fax:(02) 66212669
E-mail: shartley@sc*.ed*.au*

http://www.scu.edu.au/staff_pages/shartley/index.html

--
Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'.
Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.

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]