AKA-60 and Shearwater Combination

kiwi_diver · 6th February 2008, 06:57

Just finished setting up my Shearwater Pursuit on the Orca SCR. Got one of Martins (Tecme) 3 cell P-Port holders with his new PSR 11-39 TME cells. They are tiny like a K1 and go sideways into the holder. He also does a nice delrin cage thing that goes on the inside of the P-Port, the holder slides down into it. I had to take the OPV out of the counterlung and use the hole to get the cage inside.

The current version of Pursuit code allows calibration in O2 down to 70%. I asked Bruce about letting this be set to anything from air up so it can calibrate cells in an SCR. Apparently that's coming in an SCR code release. Meantime, I have to calibrate the cells with the holder in a plastic baggie filled from my welding O2 bottle...

The Pursuit will use the real time PPO2 for Deco calculations, but Bruce said the TTS is calculated based on the Setpoint, so that will not track true for an SCR, but the Deco obligation (stops etc) will. This will also be addressed in the SCR code update.

Anyway, it's a tidy setup, I have the fischer cable coming out the top l/h side slot in the Orca chassis and running down my left arm to the Pursuit.

I intend to run my rEvodream as well in future so I have PPO2 display redundancy and HUD but for now, I am keeping it basic until I have done a few easy dives with the Pursuit.

Looking forward to a dive with it this weekend!

4ster · 6th February 2008, 15:14

I have been running a Shearwater and one of Martin's external 3 cell holders on my SCR Dolphin for over a year now and love it.

Calibration was a hassle (plastic bag) until I bought a couple of plugs for the housing and plumbed them to make a 2 atm pressure pot. O2 from a medical O2 regulator feeds into one end and the other has a 1.5 atm gauge and a needle valve to adjust pressure. I can do linearity checks to 2 atm with O2 and calibrate at 1 atm with this set up.

I wonder if you could make up a similar pot with a P-port? You may not want to run the pressure up much over 1 atm to keep from damaging the P-port, but you would have an easy to use calibration pot and could check linearity to 1.2 -1.4 atm.

Even with the TTS issue, the Shearwater makes a great SCR computer now. It is so much better knowing that my nitrogen loading is being tracked by something better than my best estimate. And Ross's dive logging software makes calculating my actual VO2 after the dive a breeze - no jotting down depth and PO2 on a slate anymore.

If an SCR version is released it would be fantastic.

kiwi_diver · 6th February 2008, 19:01

Thanks for the info Steve, pleased to hear your Shearweater/SCR combination works well. I have a spare unfitted P-Port so will definately try to make up a small pressure pot. Every time I've tried to calc my VO2 based on slate scribbles I've come up with different values after each dive. Will be good to get an accurate result!

**Dave Sutton** · 7th February 2008, 01:40

REALLY looking great. Well done! Find a mate who wants one like it, so I can send mine as it's looking for a good home. You really have gotten yours well set up. Just perfect! It's behaving itself I assume?

The suggestion to make a P-Connector test and calibration chamber is a good one. Martin?

Dave

kiwi_diver · 7th February 2008, 02:08

Cheers, Dave. I did away with the home-made BOV and got some big-bore hoses and DSV from the Abyss guys in Aussie. I'm quite happy on SCR. The unit is going nicely and I just want to get hours on it now. Hooking in the Pursuit covers off my last remaining concern (tracking loop to deco) and now I can dive it with confidence.

I did flick Steve some green for that P-Port pot idea, very worthy.

undrh2o · 7th February 2008, 02:32

How much was the 3 cell holder Martin doesn't have a price up on the site yet

**Dave Sutton** · 7th February 2008, 02:38

Quote: (Originally Posted by undrh2o)

How much was the 3 cell holder Martin doesn't have a price up on the site yet

Dunno, but the "Officially Licensed One" is made by John Routley (narked@90). Look here:

PRODUCT

Prices are on the page and quality is top-notch. Officially endorsed by the LDSOH.

Dave

.

kiwi_diver · 7th February 2008, 08:54

Quote: (Originally Posted by undrh2o)

How much was the 3 cell holder Martin doesn't have a price up on the site yet

From Martin it's 90 euro with the protective cage and a cable gland. PSR-11-39 TME Cells to fit are 60 euro each and a P-Port set (with blanking plug) is 32 euro.

***caveseeker7*** · 7th February 2008, 12:09

Quote: (Originally Posted by Dave Sutton)

Dunno, but the "Officially Licensed One" is made by John Routley (narked@90). Look here:

PRODUCT

Prices are on the page and quality is top-notch. Officially endorsed by the LDSOH.

Martin refers people interested in your K-1D version from his website to narked at 90's with a link.
TecMe makes a triple cell p-port holder for the AI PSR 11 39 TME sensors.

undrh2o · 7th February 2008, 13:21

Quote: (Originally Posted by Dave Sutton)

Dunno, but the "Officially Licensed One" is made by John Routley (narked@90). Look here:

PRODUCT

Prices are on the page and quality is top-notch. Officially endorsed by the LDSOH.

Dave
.

Are you saying that you get a licensing fee from Johns cell holder? I'm all for supporting the inventor/originator if that is the case. It's just the Tecme one is $132 in my currency with the cage and his cells (which cost roughly the same) last twice as long. John's is almost $280 with the cage.

6th February 2008, 06:57	#1 (permalink)
kiwi_diver Alias - Ray Mansell Current Rebreather/s: Other SCR Other Rebreather/s: Other SCR Join Date: Aug 2007 Location: Auckland, New Zealand Posts: 157	AKA-60 and Shearwater Combination Just finished setting up my Shearwater Pursuit on the Orca SCR. Got one of Martins (Tecme) 3 cell P-Port holders with his new PSR 11-39 TME cells. They are tiny like a K1 and go sideways into the holder. He also does a nice delrin cage thing that goes on the inside of the P-Port, the holder slides down into it. I had to take the OPV out of the counterlung and use the hole to get the cage inside. The current version of Pursuit code allows calibration in O2 down to 70%. I asked Bruce about letting this be set to anything from air up so it can calibrate cells in an SCR. Apparently that's coming in an SCR code release. Meantime, I have to calibrate the cells with the holder in a plastic baggie filled from my welding O2 bottle... The Pursuit will use the real time PPO2 for Deco calculations, but Bruce said the TTS is calculated based on the Setpoint, so that will not track true for an SCR, but the Deco obligation (stops etc) will. This will also be addressed in the SCR code update. Anyway, it's a tidy setup, I have the fischer cable coming out the top l/h side slot in the Orca chassis and running down my left arm to the Pursuit. I intend to run my rEvodream as well in future so I have PPO2 display redundancy and HUD but for now, I am keeping it basic until I have done a few easy dives with the Pursuit. Looking forward to a dive with it this weekend! __________________ Ray. == Latitude 36 South, where the deeper you dive, the warmer it gets! ==
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6th February 2008, 15:14	#2 (permalink)
4ster Steve Sprague Current Rebreather/s: rEvo Other Rebreather/s: rEvo Join Date: Mar 2006 Location: Arlington, Washington Posts: 302	Re: AKA-60 and Shearwater Combination I have been running a Shearwater and one of Martin's external 3 cell holders on my SCR Dolphin for over a year now and love it. Calibration was a hassle (plastic bag) until I bought a couple of plugs for the housing and plumbed them to make a 2 atm pressure pot. O2 from a medical O2 regulator feeds into one end and the other has a 1.5 atm gauge and a needle valve to adjust pressure. I can do linearity checks to 2 atm with O2 and calibrate at 1 atm with this set up. I wonder if you could make up a similar pot with a P-port? You may not want to run the pressure up much over 1 atm to keep from damaging the P-port, but you would have an easy to use calibration pot and could check linearity to 1.2 -1.4 atm. Even with the TTS issue, the Shearwater makes a great SCR computer now. It is so much better knowing that my nitrogen loading is being tracked by something better than my best estimate. And Ross's dive logging software makes calculating my actual VO2 after the dive a breeze - no jotting down depth and PO2 on a slate anymore. If an SCR version is released it would be fantastic. __________________ Steve "My problem is that I have trouble reconciling my gross habits with my net income." Errol Flynn
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6th February 2008, 19:01	#3 (permalink)
kiwi_diver Alias - Ray Mansell Current Rebreather/s: Other SCR Other Rebreather/s: Other SCR Join Date: Aug 2007 Location: Auckland, New Zealand Posts: 157	Re: AKA-60 and Shearwater Combination Thanks for the info Steve, pleased to hear your Shearweater/SCR combination works well. I have a spare unfitted P-Port so will definately try to make up a small pressure pot. Every time I've tried to calc my VO2 based on slate scribbles I've come up with different values after each dive. Will be good to get an accurate result! __________________ Ray. == Latitude 36 South, where the deeper you dive, the warmer it gets! ==
(Offline)

7th February 2008, 01:40	#4 (permalink)
Dave Sutton Diveshop of Horrors Current Rebreather/s: Sport Kiss MK 15.X rEvo Other CCR Azimuth Home Build Other Rebreather/s: Evolution Megalodon rEvo Other CCR Azimuth Home Build Join Date: Jun 2006 Location: Narragansett, Rhode Island and Hackettstown, New Jersey Posts: 2,907	Re: AKA-60 and Shearwater Combination REALLY looking great. Well done! Find a mate who wants one like it, so I can send mine as it's looking for a good home. You really have gotten yours well set up. Just perfect! It's behaving itself I assume? The suggestion to make a P-Connector test and calibration chamber is a good one. Martin? Dave __________________ "Silent Diving with No Bubbles and No Politics".... www.nobubblediving.com
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7th February 2008, 02:08	#5 (permalink)
kiwi_diver Alias - Ray Mansell Current Rebreather/s: Other SCR Other Rebreather/s: Other SCR Join Date: Aug 2007 Location: Auckland, New Zealand Posts: 157	Re: AKA-60 and Shearwater Combination Cheers, Dave. I did away with the home-made BOV and got some big-bore hoses and DSV from the Abyss guys in Aussie. I'm quite happy on SCR. The unit is going nicely and I just want to get hours on it now. Hooking in the Pursuit covers off my last remaining concern (tracking loop to deco) and now I can dive it with confidence. I did flick Steve some green for that P-Port pot idea, very worthy. __________________ Ray. == Latitude 36 South, where the deeper you dive, the warmer it gets! ==
(Offline)

7th February 2008, 02:32	#6 (permalink)
undrh2o Chris Miller Current Rebreather/s: Other CCR Dolphin Home Build Other Rebreather/s: Inspiration Classic Other CCR Dolphin Home Build Join Date: Apr 2006 Location: Ottawa, Canada Posts: 206	Re: AKA-60 and Shearwater Combination How much was the 3 cell holder Martin doesn't have a price up on the site yet
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7th February 2008, 02:38	#7 (permalink)
Dave Sutton Diveshop of Horrors Current Rebreather/s: Sport Kiss MK 15.X rEvo Other CCR Azimuth Home Build Other Rebreather/s: Evolution Megalodon rEvo Other CCR Azimuth Home Build Join Date: Jun 2006 Location: Narragansett, Rhode Island and Hackettstown, New Jersey Posts: 2,907	Re: AKA-60 and Shearwater Combination Quote: (Originally Posted by undrh2o) How much was the 3 cell holder Martin doesn't have a price up on the site yet Dunno, but the "Officially Licensed One" is made by John Routley (narked@90). Look here: PRODUCT Prices are on the page and quality is top-notch. Officially endorsed by the LDSOH. Dave . __________________ "Silent Diving with No Bubbles and No Politics".... www.nobubblediving.com
(Offline)

7th February 2008, 08:54	#8 (permalink)
kiwi_diver Alias - Ray Mansell Current Rebreather/s: Other SCR Other Rebreather/s: Other SCR Join Date: Aug 2007 Location: Auckland, New Zealand Posts: 157	Re: AKA-60 and Shearwater Combination Quote: (Originally Posted by undrh2o) How much was the 3 cell holder Martin doesn't have a price up on the site yet From Martin it's 90 euro with the protective cage and a cable gland. PSR-11-39 TME Cells to fit are 60 euro each and a P-Port set (with blanking plug) is 32 euro. __________________ Ray. == Latitude 36 South, where the deeper you dive, the warmer it gets! ==
(Offline)

7th February 2008, 12:09	#9 (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: 5,556	Re: AKA-60 and Shearwater Combination Quote: (Originally Posted by Dave Sutton) Dunno, but the "Officially Licensed One" is made by John Routley (narked@90). Look here: PRODUCT Prices are on the page and quality is top-notch. Officially endorsed by the LDSOH. Martin refers people interested in your K-1D version from his website to narked at 90's with a link. TecMe makes a triple cell p-port holder for the AI PSR 11 39 TME sensors. __________________ 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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7th February 2008, 13:21	#10 (permalink)
undrh2o Chris Miller Current Rebreather/s: Other CCR Dolphin Home Build Other Rebreather/s: Inspiration Classic Other CCR Dolphin Home Build Join Date: Apr 2006 Location: Ottawa, Canada Posts: 206	Re: AKA-60 and Shearwater Combination Quote: (Originally Posted by Dave Sutton) Dunno, but the "Officially Licensed One" is made by John Routley (narked@90). Look here: PRODUCT Prices are on the page and quality is top-notch. Officially endorsed by the LDSOH. Dave . Are you saying that you get a licensing fee from Johns cell holder? I'm all for supporting the inventor/originator if that is the case. It's just the Tecme one is $132 in my currency with the cage and his cells (which cost roughly the same) last twice as long. John's is almost $280 with the cage.
(Offline)

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