George now build a MCCR with parts of Tecme
Germany, Hydrogom Netherlands and used Dave Suttons ideas for the
conversion. Here is a photo impression.
Questions about this configuration can be
asked to George using email , George
thanks for contributing!
The rig has been completely disassembled and all components removed. The
four butterflies and their base have been moved and centered. The chassis
was cut to accommodate for the tank valve handles
The top component is
the connector for the flow meter. The middle connector is for the O2 feed
and the bottom one is used for diluent. All connectors are QDs found in BCs
and dry suits.
The ADV bypass made of
ertalon. The axis goes through the center of the cap pressing the ADV
diaphragm to activate it.
The ADV bypass installed.
Diluent is injected in the bag by pressing on the white disc. On the top
right you see the exhaust hole from the CL OPV.
The assembled rig. I used
an old Buddy Commando BC that fits just perfect. The ppO2 meters come out of
the rig from the LHS. To avoid strain on the handsets, I used some Kevlar
string that was cut a bit shorter than the cables. This way, the Kevlar
stretches first taking the strain instead of pulling on the cables.
The two ppO2 monitors from
Good quality of manufacture and reliable design. The LCD backlight is on in
First few moments in
the pool. Immediate feedback: everything works just great! The only problem
is with the mouthpiece. The hose layout is meant for an FFM so in its
current state this makes it very uncomfortable for long dives.
Testing and drills in the water. Reading the ppO2 meters. the rig is
slightly negative and rests very well on the diver's back.
Testing for leeks. The
counter lung is visible with the two P-connectors for the sensors. The
scrubber canister sits in the center and the O2 tank is on your right. The
left tank contains diluent (air).
On the LHS sits an
Apeks DS4 for DIL addition. The DS4 on the RHS has been blanked off and the
IP raised to 11 bar. You can
also see the OPV fitted.
The pool testing is
complete and the new rig is ready to dive at sea!
UPDATED SEPTEMBER 2005
Since the last update I sent you
and after some trials I decided to do some more changes to the rig. I
bolted 4kg of lead weight on the inside of the IDA cover where the CL
is, for better trim. I also got rid of the original Russian hoses and
DSV and replaced them with a DSV from a Dräger Ray. The hose needed some
adaptors to be machined plus some brass hose weights. In the photos, you
also see the one of the hose stiffener rings I added.
I dived the rig to 45m for 115
minutes yesterday. I am extremely happy with it – I had no problems
maintaining a constant ppO2 in the loop. The only drawback this rig has
is the lack of an efficient water trap (yet).