My 1st RB!!!

A Place for Discussions On All The Various mCCRs, eCCRs, SCRs & Diving Profiles.

My 1st RB!!!

Postby Packhorse » Sun Jan 06, 2008 8:49 am

Its a RG-UF/M east german Pure O2 RB.
Good to a depth of 600 centimeters

Oh well we all have to start somewhere right?

Seems to be a few others in Auckland that are diving them once modified

Postby nathanbarlow » Sun Jan 06, 2008 7:27 pm

looks good!
yea gotta start somewhere, anyways 600cm sounds rather large (!)
가장 큰 짐이 있는 큰가지, 낮게 걸림새에는
(The bough that has largest load, hang lowest)
User avatar
Posts: 166
Joined: Sun Sep 23, 2007 2:19 am
Location: Birkenhead, Auckland

Postby Packhorse » Sat Jan 12, 2008 10:18 am

Well here it is in all its glory...

The blue tank is a .7 litre 200 bar unit.
The white thing is the scrubber cannister which holds about 1kg of sodalime. These are usually a single use item with the RG's but this has already been modified to a refillable one.
Underneath the tank is the regulator unit. Its job is to supply a contstant .8l flow of O2 into the system regardless of depth. It does this by droping the pressure down to about 70 psi (5bar) and using a CMF (constant Mass Flow) sonic oriface similar to what KISS rebreathers use.
The reg also has a OPV and a IP adjustment and also a manual add button to inject a little more O2 when needed.
Exiting from the top of the scrubber is the breathing hoses and the horse shoe shape counter lung.
All in all its a pretty simple system as most O2 rebreathers are.
Dave Ray (who has built RBs in NZ since the '80s) has kindly offered to join me in the pool for a test dive. He also owns a RG.
Also included was a second regulator system (I think it may be damaged)
A trans fill whip, some tools, Sodalime and various other odds and ends.

My goal is to add a offboard dilutant tank and PPO measurement and turn it into a mCCR with OC bailout. And be able to dive it to 30 meters. The scubber and O2 tank should be good for about 2 hours I think.

Not bad for a $360 trade me deal aye!!

Postby plumb bob » Sat Jan 12, 2008 10:47 am

Nice one PH!

Is that third pic one of the design engineers? :lol:
Account deactivated by administrator
User avatar
plumb bob
Posts: 398
Joined: Mon May 28, 2007 4:16 pm
Location: Christchurch

Postby Andy » Sun Jan 13, 2008 8:50 pm

It would be worth having a chat with both Pete Mesley and Greg V - they've both done conversions/home builds and should be able to give you some good pointers.

Apparently, though I can't confirm it, Barry Hallett at Southern Cross Divers in Sydney offers a 'home build' rebreather training course.
Serial Poster
Posts: 4628
Joined: Thu Feb 01, 2007 1:29 pm
Location: Auckland

Postby Packhorse » Mon Jan 14, 2008 5:05 pm

Thanks Andy.
I have been meaning to talk to GregV.
I am also going to catch up with a few other RB divers/modders soon. I certainly have a lot to learn.

Postby Andy » Mon Jan 14, 2008 7:30 pm

Pete's written an article about his first home build, that may be of interest...... just don't let Cat see the name!!! :shock: :shock:
Serial Poster
Posts: 4628
Joined: Thu Feb 01, 2007 1:29 pm
Location: Auckland

Postby Packhorse » Mon Jan 14, 2008 9:11 pm

Andy wrote:...... just don't let Cat see the name!!!

ooops to late. has a fantastic homebuild forum.

Return to Rebreather Diving

Who is online

Users browsing this forum: No registered users and 1 guest