Cis Lunar Gas-Block

Belgium137 · 27th February 2008, 20:29

Does anyone here on the forum have more info on the Gas-Block used on the Cis Lunar Mk5-P: flow-drawings, pics, ... and how it is implemented on the unit?

Thanx everyone!

DanFountain · 28th February 2008, 11:00

Quote: (Originally Posted by Belgium137)

Does anyone here on the forum have more info on the Gas-Block used on the Cis Lunar Mk5-P: flow-drawings, pics, ... and how it is implemented on the unit?

Thanx everyone!

Take a look at the patent:

Breathing apparatus - Google Patents

-Dan

Belgium137 · 28th February 2008, 13:15

Thanx very much! That was what i was looking for!!

Greetz
Erik

satansma · 28th February 2008, 15:46

i have no idea what this is even talking about but if it can supply me with a breathable mix at 700m i want one.

Method and device for the autonomous ... - Google Patents

Dave Sutton · 28th February 2008, 19:31

Is that patent stuff enough, or do you want a users-level description of the thing? I looked at the drawings and they are simpler than what was actually used on the Mk-5P system. The patent is a description of the dual-redundant system and while similar to the Mk-5P is not identical. The gas block shown does not incorporate the offboard supplies of the Mk-5P, nor the selectable BOV feed system.

Dave

.

DanFountain · 29th February 2008, 11:47

Dave,

Would definitely like to see a functional description of the Mk-5 gas block. How about a photo or two? (save a couple thousand words...)

-Dan

Belgium137 · 29th February 2008, 18:03

Hi Dave,

Went through the patent today and indeed noticed that it is a simpler version of the gas-block used in the MK5P. I would love a more detailed description, drawings, pics,... of the actual gas-block on the MK5P, that would be very helpfull!
Thanx!

Erik

Dave Sutton · 29th February 2008, 22:52

Uhh.... OK: Here's the deal: I have the manual, but it is still a "property of CIS-Lunar Research" document and I am not comfortable doing a cut and paste of the diagrams here. Ron Micjan posted an article on the CIS that is here on the site as an article, and there are photos of the block there. I've attached one line drawing hoping that there's no objection from Bill Stone.

Basically, the block has two hoses running do it, and 3 back to the rig from it.

Onboard Diluent to the block
Onboard 02 to the block
diluent return to the rig
02 return to the rig
feed to the BOV

Block has two quick connects on the bottom for offboard diluent and 02 addition.

Block has 5 valves:

Diluent manual add (really only used to flush the sensors)
02 manual add
3 position diliuent select "onboard, off, offboard"
3 position 02 select "onboard, off, offboard"
Main 02 valve, 3 positions: Normal, 02 manual add valve on but solenoid isolated, and the third position where diluent to the BOV is deselected and 02 is fed to the BOV. In this last position 02 is still available to the 02 manual add but the solenoid is still isolated.

With this system you can use onboard or offboard dil or 02, turn any gas off, add any gas manually, purge the sensors, bail out to any of the sources including 02, and isolate the solenoid while maintaining the 02 manual add valve. Nice, huh?

Careful observers will ask about ADV isolation. That's done at the ADV on the right (exhale) CL.

No joke, this block cost more to manufacture than most rebreathers (complete) cost. It's the heart of the CIS. I had thought about making a functional duplicate of it for years for my Mark-15, and had it drawn out and would probably have been working on it next winter (still might do so). I always lusted after one, and in the end it's one of two items on the CIS that drove me to buy one (the other being the floodable scrubber). The gas management capability of the block is exactly perfect. It has additional features such as lift to turn interlocks, etc. It's aerospace quality in every way. No wonder CLR went bankrupt... nobody could afford to pay for what one of these rigs must have cost to produce. An aircraft part of this quality and complexity would be a $10K part.

Dave
Cis Mk-5P S/N 3 "on the way"

.

DanFountain · 3rd March 2008, 12:45

Quote: (Originally Posted by Dave Sutton)

...Ron Micjan posted an article on the CIS that is here on the site as an article, and there are photos of the block there.

Am I the only one who can't get the photos in the article? http://www.rebreatherworld.com/close...ebreather.html

-Dan

Crazyduck · 3rd March 2008, 13:04

Dan,
Try it directly from his site.

The Cis-Lunar Rebreather

Regards, Andrew

27th February 2008, 20:29	#1 (permalink)
Belgium137 New Member Current Rebreather/s: MK 15.X Other Rebreather/s: Join Date: May 2005 Location: Antwerp Posts: 21	Cis Lunar Gas-Block Does anyone here on the forum have more info on the Gas-Block used on the Cis Lunar Mk5-P: flow-drawings, pics, ... and how it is implemented on the unit? Thanx everyone!
(Offline)

28th February 2008, 11:00	#2 (permalink)
DanFountain Custom Title Allowed! Current Rebreather/s: Home Build Other Rebreather/s: Home Build Join Date: Dec 2005 Location: Lake Superior Posts: 101	Re: Cis Lunar Gas-Block Quote: (Originally Posted by Belgium137) Does anyone here on the forum have more info on the Gas-Block used on the Cis Lunar Mk5-P: flow-drawings, pics, ... and how it is implemented on the unit? Thanx everyone! Take a look at the patent: Breathing apparatus - Google Patents -Dan __________________ Try not. Do - or do not. There is no try. -Yoda Last edited by DanFountain : 28th February 2008 at 11:17.
(Offline)

28th February 2008, 13:15	#3 (permalink)
Belgium137 New Member Current Rebreather/s: MK 15.X Other Rebreather/s: Join Date: May 2005 Location: Antwerp Posts: 21	Re: Cis Lunar Gas-Block Thanx very much! That was what i was looking for!! Greetz Erik
(Offline)

28th February 2008, 15:46	#4 (permalink)
satansma New Member Current Rebreather/s: Not Bought Yet Other Rebreather/s: Not Bought Yet Join Date: Feb 2007 Location: Glasvegas Posts: 14	Re: Cis Lunar Gas-Block i have no idea what this is even talking about but if it can supply me with a breathable mix at 700m i want one. Method and device for the autonomous ... - Google Patents
(Offline)

28th February 2008, 19:31	#5 (permalink)
Dave Sutton Membership Cancelled Current Rebreather/s: Sport Kiss MK 15.X rEvo Other CCR Azimuth Home Build Other Rebreather/s: Classic Kiss rEvo Other CCR Azimuth Home Build Join Date: Jun 2006 Location: Narragansett, Rhode Island and Hackettstown, New Jersey Posts: 2,637	Re: Cis Lunar Gas-Block Is that patent stuff enough, or do you want a users-level description of the thing? I looked at the drawings and they are simpler than what was actually used on the Mk-5P system. The patent is a description of the dual-redundant system and while similar to the Mk-5P is not identical. The gas block shown does not incorporate the offboard supplies of the Mk-5P, nor the selectable BOV feed system. Dave . Last edited by Dave Sutton : 29th February 2008 at 01:02.
(Offline)

29th February 2008, 11:47	#6 (permalink)
DanFountain Custom Title Allowed! Current Rebreather/s: Home Build Other Rebreather/s: Home Build Join Date: Dec 2005 Location: Lake Superior Posts: 101	Re: Cis Lunar Gas-Block Dave, Would definitely like to see a functional description of the Mk-5 gas block. How about a photo or two? (save a couple thousand words...) -Dan __________________ Try not. Do - or do not. There is no try. -Yoda
(Offline)

29th February 2008, 18:03	#7 (permalink)
Belgium137 New Member Current Rebreather/s: MK 15.X Other Rebreather/s: Join Date: May 2005 Location: Antwerp Posts: 21	Re: Cis Lunar Gas-Block Hi Dave, Went through the patent today and indeed noticed that it is a simpler version of the gas-block used in the MK5P. I would love a more detailed description, drawings, pics,... of the actual gas-block on the MK5P, that would be very helpfull! Thanx! Erik
(Offline)

3rd March 2008, 12:45	#9 (permalink)
DanFountain Custom Title Allowed! Current Rebreather/s: Home Build Other Rebreather/s: Home Build Join Date: Dec 2005 Location: Lake Superior Posts: 101	Re: Cis Lunar Gas-Block Quote: (Originally Posted by Dave Sutton) ...Ron Micjan posted an article on the CIS that is here on the site as an article, and there are photos of the block there. Am I the only one who can't get the photos in the article? http://www.rebreatherworld.com/close...ebreather.html -Dan __________________ Try not. Do - or do not. There is no try. -Yoda
(Offline)

3rd March 2008, 13:04	#10 (permalink)
Crazyduck Underwater Mechanic Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Mar 2005 Location: TEXAS, Dallas/ Ft.Worth Posts: 707	Re: Cis Lunar Gas-Block Dan, Try it directly from his site. The Cis-Lunar Rebreather Regards, Andrew __________________ Howdy Senor- What’s Happening! Rob Davie April 2005- Presently in a state of transition from Open Circuit to Closed Circuit. "You will not be punished for your anger; you will be punished by it." - Buddha.
(Offline)

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode