BOV for Boris

Drmike · 21st March 2006, 11:21

Quote: (Originally Posted by decoweenie)

Last request (if possible), how about option for APD flapper valves to fit ? They are readily available (for me) so easier than trying to get Boris parts.
.

If, and thats a big If, I do make them for other host units it would make sense for the adapter flanges to accept the host units check valves.

But I doubt they will be attractive to many as they will be expensive. The cost of machining the Delrin body parts alone is already higher than the purchase cost of other BOVs on the market.

To give you an idea the BOV will look a bit like an RB80 BOV.

Drmike · 21st March 2006, 11:24

Quote: (Originally Posted by ccscuba)

Mike, where will you run the gas supply from?

Martin

From off boards through a QC hose.

decoweenie · 21st March 2006, 13:08

Quote: (Originally Posted by Drmike)

But I doubt they will be attractive to many as they will be expensive. The cost of machining the Delrin body parts alone is already higher than the purchase cost of other BOVs on the market.

Finish cost at ~US$1000 then ?

Crazyduck · 21st March 2006, 13:17

Dr. Mike,

What about using standard plumbing in the second stage and then running the hose to a manifold with a single QC fitting?
I realize that it would be additional failure points but indirectly it would lighten the DSV construction and allow a permeate hose to the second stage. Also it would make the plug and play location on your chest similar to the CIS-lunar style verses directly to the DSV.

On the different sizes for the one way valves could you make step down sizing on the inside dimension of the DSV? So you would have the larger size for the Boris and then a standard size like the inspiration. This would allow at least two sizes. The serious drawback would be the inherent restriction involved for the smaller size bore.

Just a thought mate.

Best regards, Andrew

Drmike · 21st March 2006, 13:36

Quote: (Originally Posted by Crazyduck)

Dr. Mike,

What about using standard plumbing in the second stage and then running the hose to a manifold with a single QC fitting?
I realize that it would be additional failure points but indirectly it would lighten the DSV construction and allow a permeate hose to the second stage. Also it would make the plug and play location on your chest similar to the CIS-lunar style verses directly to the DSV.

On the different sizes for the one way valves could you make step down sizing on the inside dimension of the DSV? So you would have the larger size for the Boris and then a standard size like the inspiration. This would allow at least two sizes. The serious drawback would be the inherent restriction involved for the smaller size bore.

Just a thought mate.

Best regards, Andrew

The method I found works best is a permanent hose from the BOV, following the Rebreather hose, around the back of the kneck and down the side to about mid chest level. On the end of that hose is a large bore QC. All my bail tanks have a short hose with QC. Having the connection point there makes it easier for me (or a buddy) to connect/disconnect as I/they can see it as its right in clear position and in operation I can just feel for the tank valve then follow the short hose to the QC.

Multi port manifolds and switch blocks have more cons than pros IMO, KISS is the best way to go, one hose one QC.

Either way how the BOV is plumbed in wont actually effect the BOV design.

Crazyduck · 21st March 2006, 13:45

Sounds like a great design idea.
Thanks for the explanation.

Andrew

fredrik · 21st March 2006, 16:43

Quote: (Originally Posted by Drmike)

But I doubt they will be attractive to many as they will be expensive. The cost of machining the Delrin body parts alone is already higher than the purchase cost of other BOVs on the market.

Of course it will be expensive if you only will make a few units. If you design it to suit more than the Boris you will probably sell more of them and get the cost of machining less /unit.

***caveseeker7*** · 21st March 2006, 17:48

Watched Deep Sea Detectives last night, searching for "Queen Ann's Revenge".
As the previous show, Chatterton was diving his Ouroboros with a M-48.
Didn't catch if it was with a BOV or just the Rebreather pod, the guy just can't hold still for a minute.
Nice footage of him and Kohler on the Evo, though.

Crazyduck · 21st March 2006, 19:08

I noticed the change myself Chatterton going to a Boris and Richie on an Evo.
I was surprised by the change that Richie going closed circuit – he seemed very set on his steel doubles. It was rather a shocker to me.

Has anyone read Chatterton’s write up on the Boris? It was rather light on the details. Part of the problem is that I am spoiled by rebreatherworld.

Hijack over…

DrJM · 21st March 2006, 22:12

Quote: (Originally Posted by finbar.taylor)

Mike
I'm sure you checked but When I was chatting with Phil Short he mentioned that there is already a BOV/FFM that is currently being tested for the borris
He indicated that it would be avaliable middle of the year once it's got CE stamped so could be worth finding out and waiting?

That's gonna be > £800

But anyway you cannot eat or drink on deco with a FFM

21st March 2006, 11:21	#11 (permalink)
Drmike Custom Title Allowed! Current Rebreather/s: MK 15.X Ouroboros Other CCR Home Build Other Rebreather/s: Inspiration Classic Other CCR Home Build Join Date: Feb 2005 Posts: 3,325	Re: BOV for Boris Quote: (Originally Posted by decoweenie) Last request (if possible), how about option for APD flapper valves to fit ? They are readily available (for me) so easier than trying to get Boris parts. . If, and thats a big If, I do make them for other host units it would make sense for the adapter flanges to accept the host units check valves. But I doubt they will be attractive to many as they will be expensive. The cost of machining the Delrin body parts alone is already higher than the purchase cost of other BOVs on the market. To give you an idea the BOV will look a bit like an RB80 BOV. __________________ Cave diving is a sport Wreck diving is a sport Diving in general is a sport 'Rebreather diving' is not a sport its the delusional obsession with a highly dangerous and often inappropriate piece of equipment Last edited by Drmike : 21st March 2006 at 11:31.
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21st March 2006, 11:24	#12 (permalink)
Drmike Custom Title Allowed! Current Rebreather/s: MK 15.X Ouroboros Other CCR Home Build Other Rebreather/s: Inspiration Classic Other CCR Home Build Join Date: Feb 2005 Posts: 3,325	Re: BOV for Boris Quote: (Originally Posted by ccscuba) Mike, where will you run the gas supply from? Martin From off boards through a QC hose. __________________ Cave diving is a sport Wreck diving is a sport Diving in general is a sport 'Rebreather diving' is not a sport its the delusional obsession with a highly dangerous and often inappropriate piece of equipment
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21st March 2006, 13:08	#13 (permalink)
decoweenie Crash Test Dummy Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Feb 2005 Location: Cairo Posts: 5,487	Re: BOV for Boris Quote: (Originally Posted by Drmike) But I doubt they will be attractive to many as they will be expensive. The cost of machining the Delrin body parts alone is already higher than the purchase cost of other BOVs on the market. Finish cost at ~US$1000 then ? __________________ "...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
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21st March 2006, 13:17	#14 (permalink)
Crazyduck Underwater Mechanic Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Mar 2005 Location: TEXAS, Dallas/ Ft.Worth Posts: 711	Re: BOV for Boris Dr. Mike, What about using standard plumbing in the second stage and then running the hose to a manifold with a single QC fitting? I realize that it would be additional failure points but indirectly it would lighten the DSV construction and allow a permeate hose to the second stage. Also it would make the plug and play location on your chest similar to the CIS-lunar style verses directly to the DSV. On the different sizes for the one way valves could you make step down sizing on the inside dimension of the DSV? So you would have the larger size for the Boris and then a standard size like the inspiration. This would allow at least two sizes. The serious drawback would be the inherent restriction involved for the smaller size bore. Just a thought mate. Best 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.
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21st March 2006, 13:36	#15 (permalink)
Drmike Custom Title Allowed! Current Rebreather/s: MK 15.X Ouroboros Other CCR Home Build Other Rebreather/s: Inspiration Classic Other CCR Home Build Join Date: Feb 2005 Posts: 3,325	Re: BOV for Boris Quote: (Originally Posted by Crazyduck) Dr. Mike, What about using standard plumbing in the second stage and then running the hose to a manifold with a single QC fitting? I realize that it would be additional failure points but indirectly it would lighten the DSV construction and allow a permeate hose to the second stage. Also it would make the plug and play location on your chest similar to the CIS-lunar style verses directly to the DSV. On the different sizes for the one way valves could you make step down sizing on the inside dimension of the DSV? So you would have the larger size for the Boris and then a standard size like the inspiration. This would allow at least two sizes. The serious drawback would be the inherent restriction involved for the smaller size bore. Just a thought mate. Best regards, Andrew The method I found works best is a permanent hose from the BOV, following the Rebreather hose, around the back of the kneck and down the side to about mid chest level. On the end of that hose is a large bore QC. All my bail tanks have a short hose with QC. Having the connection point there makes it easier for me (or a buddy) to connect/disconnect as I/they can see it as its right in clear position and in operation I can just feel for the tank valve then follow the short hose to the QC. Multi port manifolds and switch blocks have more cons than pros IMO, KISS is the best way to go, one hose one QC. Either way how the BOV is plumbed in wont actually effect the BOV design. __________________ Cave diving is a sport Wreck diving is a sport Diving in general is a sport 'Rebreather diving' is not a sport its the delusional obsession with a highly dangerous and often inappropriate piece of equipment Last edited by Drmike : 21st March 2006 at 13:47.
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21st March 2006, 13:45	#16 (permalink)
Crazyduck Underwater Mechanic Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Mar 2005 Location: TEXAS, Dallas/ Ft.Worth Posts: 711	Re: BOV for Boris Sounds like a great design idea. Thanks for the explanation. 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.
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21st March 2006, 16:43	#17 (permalink)
fredrik Rekodeko. Sweden Current Rebreather/s: Classic Kiss Other CCR Other Rebreather/s: Other CCR Join Date: Apr 2005 Location: Sweden Posts: 184	Re: BOV for Boris Quote: (Originally Posted by Drmike) But I doubt they will be attractive to many as they will be expensive. The cost of machining the Delrin body parts alone is already higher than the purchase cost of other BOVs on the market. Of course it will be expensive if you only will make a few units. If you design it to suit more than the Boris you will probably sell more of them and get the cost of machining less /unit.
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21st March 2006, 17:48	#18 (permalink)
*caveseeker7* Who loves ya, baby Current Rebreather/s: Sport Kiss Other Rebreather/s: Prism Topaz Join Date: Jan 2005 Location: Too far from Neverland Posts: 5,455	Re: BOV for Boris Watched Deep Sea Detectives last night, searching for "Queen Ann's Revenge". As the previous show, Chatterton was diving his Ouroboros with a M-48. Didn't catch if it was with a BOV or just the Rebreather pod, the guy just can't hold still for a minute. Nice footage of him and Kohler on the Evo, though. __________________ Cheers Stefan "Political Correctness is a doctrine, fostered by a delusional, illogical minority, and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end.!"
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21st March 2006, 19:08	#19 (permalink)
Crazyduck Underwater Mechanic Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Mar 2005 Location: TEXAS, Dallas/ Ft.Worth Posts: 711	Re: BOV for Boris I noticed the change myself Chatterton going to a Boris and Richie on an Evo. I was surprised by the change that Richie going closed circuit – he seemed very set on his steel doubles. It was rather a shocker to me. Has anyone read Chatterton’s write up on the Boris? It was rather light on the details. Part of the problem is that I am spoiled by rebreatherworld. Hijack over… __________________ 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.
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21st March 2006, 22:12	#20 (permalink)
DrJM Deep Cave Explorer Current Rebreather/s: Ouroboros Other Rebreather/s: MK 15.X Join Date: May 2005 Location: France Posts: 344	Re: BOV for Boris Quote: (Originally Posted by finbar.taylor) Mike I'm sure you checked but When I was chatting with Phil Short he mentioned that there is already a BOV/FFM that is currently being tested for the borris He indicated that it would be avaliable middle of the year once it's got CE stamped so could be worth finding out and waiting? That's gonna be > £800 But anyway you cannot eat or drink on deco with a FFM __________________ www.snoopyloop.com Deep Cave Exploration
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