Colkan Eagle first chamber dives + pictures

SteveL · 4th May 2007, 08:22

Well guys its official 3 Colkan Eagles went in the chamber last night for a dive to 50 meters (164ft) - total run time was 90 minutes.

We dived 1 fully electronic unit and 2 constant add units.

Over all the units performed very well and the work of breathing was VERY acceptable to all the testers.

Bazza - usually dives and inspo

Steve P - currently dives Kissed 15.5 - i think previously inspo

Steve L - currently dives standard 15.5 - previously inspo

We did had some glitches with the secondary display on the constant add units and this is maybe a cell position issue or some code in the display board - will be resolved next week with the software designer (Jason) going to the factory to spend some time.

Jason also does the electronics for the Mk 15.5 untis and the electronic eagles all of which work, and work very well so im sure it is just some debugging and that was the point of the chamber dives.

Col and Kane rigged up some water tubes that were connected to the mouthpieces of the units. Along side the water tubes was a scale so we could measure the water differential pressure on the inhale and exhale.

See the pictures - these are the white boards hanging off the roof of the chamber.

The worst reading we got was 10mm water above and 10 below equlibrium. (me) - I think Bazza had about +/- 6mm.

I simulated a hard work cycle at 50m and found that the WOB was acceptable. I managed to lower the setpoint in a 2 minute cycle about 0.3 so the solenoid opening sequence will be tweeked to stop this - again the whole pont of testing ..

We packed the scrubbers with 2-5mm sofnolime for the record.

Did't notice any breakthough but I wouldnt expect that this would be the case anyway on a 90 minute dive, longer dives are comming in the next few weeks.

We set the units up on one side of the chamber and sat opposite (see the pics)

The dives were conducted on air both on the Eagles and in the chamber.

The chamber operator wanted us to do the last stop on the oxygen bibs not the Rebreather's.

I flushed the fully electronic unit at 6m and all reading held steady and when we went to 3m the cells tracked perfectly.

See the pics below for the fun.

Now it's official - not vapourware

More later

Regards,

Steve L

AD_ward9 · 4th May 2007, 08:31

Looks a nice compact unit. Nice pics too. Good post and greened.

Are scientific results going to be published, or just the impression people get from user trials?

Things like hydrostatic pressure, WOB under pressure and CO2 breakthrough have well established tests for. If it is to be sold, imported or used commercially in Europe, then the tests are in EN14143. These use breathing machines under reasonably well defined conditions, and set minimum levels for safe performance. It would be good to see the figures from Cochran rather than figures from somewhere else after the first units are sold. What are the plans on this?

Just looking at the 10mbar, and 6mbar, please could you clarify if this is in air or heliox. EN14143 would have the hydrostatic in the prone position added to that but I can't see the CLs in the pics. How big are the CLs?

Alex

***caveseeker7*** · 4th May 2007, 08:33

Steve, thanks for the report and pictures. Much appreciated.
Intresting (and good) to see testing being done.

By the way, is the last picture inverted or is that clock an Ozzie downunder thing ... ?

SteveL · 4th May 2007, 08:34

A few more pictures of the bunnies

1. The father of the child - Col Wilcox -
2. Barry Hallet from Southern Cross Divers -
3. Kane Willcox -
4. Steve Pearson and Jason Mc Hatten
5. Steve Loneragan - tesing the flow

Steve

***caveseeker7*** · 4th May 2007, 08:51

Quote: (Originally Posted by SteveL)

2. Barry Hallet from Southern Cross Divers -

He SMILES!

MHD · 4th May 2007, 09:06

Quote: (Originally Posted by AD_ward9)

If it is to be sold, imported or used commercially in Europe, then the tests are in EN14143.
Alex

Alex from talks I had with them at oztek they are only looking at local sales in Australia. Certainly I can't see them trying for CE certification for the unit. Not relevant for the market they are looking at.

Steve thanks for posting. Hope to hear a lot more good

Matt

Jakub · 4th May 2007, 09:26

Hi Steve,
congratulation for the test dives. Cool pictures :-) Just for interest any HUD planned? It will be similar for MK15.5 Colkan units?
Jakub

koputai · 4th May 2007, 09:33

Quote: (Originally Posted by MHD)

Alex from talks I had with them at oztek they are only looking at local sales in Australia. Certainly I can't see them trying for CE certification for the unit. Not relevant for the market they are looking at.

That's more to do with logistics, and keeping the first production run reasonably 'local', rather than not wanting to worry about performance criteria.

Cheers,
Jason.

AD_ward9 · 4th May 2007, 09:48

Quote: (Originally Posted by MHD)

Alex from talks I had with them at oztek they are only looking at local sales in Australia. Certainly I can't see them trying for CE certification for the unit. Not relevant for the market they are looking at.

But does that mean they are not planning testing it properly? Surely they must be putting this on some equipment to measure what it is doing?

Alex

Scuttle · 4th May 2007, 10:01

Good stuff, I'm glad to see this progressing along as planned.

Thanks for the update.

4th May 2007, 08:31	#2 (permalink)
AD_ward9 So much more to learn Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Jun 2005 Location: Scotland Posts: 1,553	Re: Colkan Eagle first chamber dives + pictures Looks a nice compact unit. Nice pics too. Good post and greened. Are scientific results going to be published, or just the impression people get from user trials? Things like hydrostatic pressure, WOB under pressure and CO2 breakthrough have well established tests for. If it is to be sold, imported or used commercially in Europe, then the tests are in EN14143. These use breathing machines under reasonably well defined conditions, and set minimum levels for safe performance. It would be good to see the figures from Cochran rather than figures from somewhere else after the first units are sold. What are the plans on this? Just looking at the 10mbar, and 6mbar, please could you clarify if this is in air or heliox. EN14143 would have the hydrostatic in the prone position added to that but I can't see the CLs in the pics. How big are the CLs? Alex Last edited by AD_ward9 : 4th May 2007 at 08:39.
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4th May 2007, 08:33	#3 (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: 5,284	Re: Colkan Eagle first chamber dives + pictures Steve, thanks for the report and pictures. Much appreciated. Intresting (and good) to see testing being done. By the way, is the last picture inverted or is that clock an Ozzie downunder thing ... ? __________________ Cheers Stefan Be Water, My Friend - Bruce Lee Sponsor Lou in Race For Life! Last edited by caveseeker7 : 4th May 2007 at 08:36.
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4th May 2007, 08:51	#5 (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: 5,284	Re: Colkan Eagle first chamber dives + pictures Quote: (Originally Posted by SteveL) 2. Barry Hallet from Southern Cross Divers - He SMILES! __________________ Cheers Stefan Be Water, My Friend - Bruce Lee Sponsor Lou in Race For Life!
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4th May 2007, 09:06	#6 (permalink)
MHD Custom Title Allowed! Current Rebreather/s: Home Build Other Rebreather/s: Sport Kiss Home Build Join Date: Feb 2005 Location: Brisbane, QLD, Australia Posts: 235	Re: Colkan Eagle first chamber dives + pictures Quote: (Originally Posted by AD_ward9) If it is to be sold, imported or used commercially in Europe, then the tests are in EN14143. Alex Alex from talks I had with them at oztek they are only looking at local sales in Australia. Certainly I can't see them trying for CE certification for the unit. Not relevant for the market they are looking at. Steve thanks for posting. Hope to hear a lot more good Matt
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4th May 2007, 09:26	#7 (permalink)
Jakub New Member Current Rebreather/s: Other CCR Other Rebreather/s: Inspiration Classic Inspiration Vision Megalodon MK 15.X Ouroboros Other CCR Join Date: May 2005 Location: Czech Republic, Prague Posts: 79	Re: Colkan Eagle first chamber dives + pictures Hi Steve, congratulation for the test dives. Cool pictures :-) Just for interest any HUD planned? It will be similar for MK15.5 Colkan units? Jakub
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4th May 2007, 09:33	#8 (permalink)
koputai Subsea Systems Current Rebreather/s: MK 15.X Other CCR Other SCR Other Rebreather/s: Not Bought Yet Other CCR Other SCR Join Date: Jul 2005 Location: Sydney, Australia Posts: 299	Re: Colkan Eagle first chamber dives + pictures Quote: (Originally Posted by MHD) Alex from talks I had with them at oztek they are only looking at local sales in Australia. Certainly I can't see them trying for CE certification for the unit. Not relevant for the market they are looking at. That's more to do with logistics, and keeping the first production run reasonably 'local', rather than not wanting to worry about performance criteria. Cheers, Jason. Last edited by koputai : 4th May 2007 at 09:35. Reason: Bad speeling
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4th May 2007, 09:48	#9 (permalink)
AD_ward9 So much more to learn Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Jun 2005 Location: Scotland Posts: 1,553	Re: Colkan Eagle first chamber dives + pictures Quote: (Originally Posted by MHD) Alex from talks I had with them at oztek they are only looking at local sales in Australia. Certainly I can't see them trying for CE certification for the unit. Not relevant for the market they are looking at. But does that mean they are not planning testing it properly? Surely they must be putting this on some equipment to measure what it is doing? Alex
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4th May 2007, 10:01	#10 (permalink)
Scuttle 1 Grumpy ole skipper Current Rebreather/s: Classic Kiss Dolphin Other Rebreather/s: Dolphin Join Date: May 2005 Location: Jan Juc, Vic, Australia Posts: 239	Re: Colkan Eagle first chamber dives + pictures Good stuff, I'm glad to see this progressing along as planned. Thanks for the update. __________________ sold CK182 now its CK243
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