Paul C’s Inspo with back-mounted lungs.

pchanning

Hi Mikel,

John Routley makes a remote inflator (like the boris) but cheaper which I would recommend.

You could also plumb a GCS with a flow stop to the manifold.
FWIW I dont like this method as there is an increase in critical failure points, flow stops are not great (IMO) amd GCS can sometimes disconnect/ is not easy to change underwater/ when pressurised.

John's system plugs it into the CL. Flushes are good, it is quite minimal and more importantly, familiar.

HTH

__________________
Cheers
Paul

The key to enlightenment... is survival.

Mikel-Deko

Hi Paul.
Do you think that it is worth it to put two of John Routley's systems?
One for oxigen and one for diluyent???
Best
Mikel

__________________
Mikel-Deko
Basque Country
www.olatu.net

"DIR is the nanny state for divers who cannot think on their own" Ron Micjan

colinicky

Mikel
I do not have pauls bmcl but I do have a different version (no I'm not poaching Paul ) i originally went to John with the idea of the remote inflater buttons as I cannot reach the ADV /T piece positions so could not use Paul's O2 add idea . I had 2 made by John for exactly the reason of ease & familiarity .
I have routed mine along the waist band webbing so there is even less ots but you could route it ots if you wanted .You can then easily unplug your on board to plug in offboard the same as with ots lungs .Follow the link below to view John's manual add :-
PRODUCT
HTH

__________________
Colin

I trust my rebreather completely ,
I just don't trust the user

onwards & downwards

pchanning

It is an excellent method for running the Rebreather in SCR mode.

Having 2 means of adding diluent to the loop is a sensible idea - think KISS.

If I were to use the Rebreather for cave diving then I would add one of John's remote addition system (you only need one IMO).

Personally, I use a BOV which can also extend my bail out gas (bottom mix) in the similar way. Works for me.

HTH

__________________
Cheers
Paul

The key to enlightenment... is survival.

pchanning

I have a second generation stainless steel BMCL box that I can use to complete an otherwise new kit. I have personally used it for 12 months.
The kit will be for sale at a second-hand price. PM me if you want it.
Shown here:



This is the last one.

__________________
Cheers
Paul

The key to enlightenment... is survival.

Johnny Christensen

Maybe it's just me that's kinda slow.
But I just realised that when donning the rebreather, why not have it help you putting the unit on. Inflate the counterlungs and it lifts out the harness straps.
It's like having your own personal divemaster to serve you.

Now if I could just snap my fingers afterwards and the unit would be automaticly cleaned...

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Wreckphotography from the cold north

decoweenie

Now that's a cool and novel idea. I have to try that...

Thanks and have green!

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"...after a while you get bored offering advice to a bull that like to keep butting the fence with its head rather than walking through the open gate..."

- Rebreather World PM

clanger

i've just found this thread and feel very gutted that i've missed out on such a great piece of kit! If you should change your mind and go into production again, I (and assume many others) would be very interested.

AD_ward9

We have one for sale.

It has been modified by cutting away the area around the breathing bags so they have less breathing resistance.

We measured 40mbar peak pressure on the surface at NORSOK U101 90l/min rates on an Inspo with the original BMCL because the SS tubes in which the counterlungs go in, trap water which the lungs have to force out: the work of moving the water is like a pump. The mod eliminates this problem.

I will post pictures of this mod as soon as I can find what I did with the memory card reader from the camera.

Would be original kit, with mod, for same price. Accept bank transfer in USD, Euro or UKP, Paypal + 2%, cheque in UKP.

Cheers

Alex

AD_ward9

Here are the pictures promised. All the other parts of the BMCL kit are as new. In the pictures the channel that holds the counterlungs is cut away but leaving space for them, so it works just as before except that now the CLs can move freely so there is not the added WOB of pumping water up and down in the stainless steel tubes.

The little brackets on the side are a temporary thing to allow me to strap tanks to the BMCL plate for a rebreather without the yellow case. A stainless steel version of that was planned to be the next step, but plan changed. We also drilled some extra holes and put an extra slot in the sides: the holes to bolt the CLs down to stop them floating at all, and the slot for a tank cam band.

I would advise everyone who is using BMCLs to cut away the metal on their plate in the same way as shown in the photos. Your lungs are really poor at measuring WOB but your body is really good at suffering from CO2 retention. We tested at 90l/min on the surface and found the original BMCL added 30mbar to the breathing resistance (adds 60mbar peak to peak). At depth the 30mbar overhead of the BMCL stays with you, you will retain significantly more CO2 at depth unless you do the mod . To get to flow rates of 90l/min on the surface should quite rare 90l/min, unless your skipper is one of those I know who likes to see what sort of tide divers can overcome while they swim uptide to the buoy
The resistance is proportional to tidal volume: 3 litres in this case. You probably need that at some point.

Anyhow, back to my post, a ready modified BMCL kit is for sale for original price Saves you having to work away cutting a long piece of SS like this in a straight line.

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