Check your handsets, and carry some tables.

miker · 13th July 2005, 17:34

Did a 260' dive on saturday with a buddy, there was another Inspiration diver and OC guy on the boat. Descent went well, we hot dropped and all hit the wreck...nice start. Planned bottom time of 20 min's. My buddy and I went aft and the other pair went forward, at 20 min we were to all meet and ascend along the superstructure. That all went well, all met up and began to prepare for the ascent. Being the nosy mother I am, I tend to steal looks at peoples handsets when I can...guess what. 20 min at 260 at .7, yep never switched to high setpoint. Pointed at his hand sets and he looked at them and looked back at me like "ok whats wrong?"...wrote on my slate "you never switched to high sp". Then it clicked finally. Then a look of confusion sat in...he had an HS (non integrated) and had switched the HS but not the inspiration. he carries no tables. Fortunately my HS craps on a regular basis so tables are my bread and butter. Fortunately no one got bent and everyone learned a lesson.

Check your handsets...and calculate and verify what they are telling you. Carry tables and a timer just in case, and be prepared to use them.

Drmike · 14th July 2005, 07:33

Quote: (Originally Posted by miker)

Fortunately my HS craps on a regular basis so tables are my bread and butter.

.

LOL!

Well at least if nothing else the HS is good for one thing - encourage people to carry tables!

Other than Joe does anyone own a HS that doesnt crap out all the time ???

Pierre Farrugia · 14th July 2005, 07:44

Quote: (Originally Posted by miker)

Did a 260' dive on saturday with a buddy, there was another Inspiration diver and OC guy on the boat. Descent went well, we hot dropped and all hit the wreck...nice start. Planned bottom time of 20 min's. My buddy and I went aft and the other pair went forward, at 20 min we were to all meet and ascend along the superstructure. That all went well, all met up and began to prepare for the ascent. Being the nosy mother I am, I tend to steal looks at peoples handsets when I can...guess what. 20 min at 260 at .7, yep never switched to high setpoint. Pointed at his hand sets and he looked at them and looked back at me like "ok whats wrong?"...wrote on my slate "you never switched to high sp". Then it clicked finally. Then a look of confusion sat in...he had an HS (non integrated) and had switched the HS but not the inspiration. he carries no tables. Fortunately my HS craps on a regular basis so tables are my bread and butter. Fortunately no one got bent and everyone learned a lesson.

Check your handsets...and calculate and verify what they are telling you. Carry tables and a timer just in case, and be prepared to use them.

Wow that must have changed your profile a lot, what runtime you resored to at the end ? You must have earned a lot of beer for this, well done.

So yu also carry 0.7 tabels with you, never tought of this mistake.

PeteS · 14th July 2005, 09:38

Quote: (Originally Posted by Drmike)

LOL!

Well at least if nothing else the HS is good for one thing - encourage people to carry tables!

Other than Joe does anyone own a HS that doesnt crap out all the time ???

My HS is fine.

And I've done the opposite error - change the CCR and not the computer. I couldn't work out why I had deco so soon in the dive.

***Beanie*** · 14th July 2005, 09:46

Quote: (Originally Posted by PeteS)

My HS is fine.

And I've done the opposite error - change the CCR and not the computer. I couldn't work out why I had deco so soon in the dive.

I did that on my VR£ it sulked for that dive

miker · 14th July 2005, 16:08

My hs is flawless to about 200', I have had several issues past 200'. I believe its due to case distortion. Have tried the recommended conductor positioning but still have issues. On one dive to 325, while passing through 225 or so it went off, on ascent at 225 or so it came back on...go figure.

Shon Roberts · 14th July 2005, 16:16

From what I have seen and heard forgetting to switch to the HS happens quite a lot. I know quite a few people who just leave their VR3's permantly switched to the HS which aint good if you forget to switch the hansets to you HS. A friend of mine did just that and spent 30min finning around a wreck at 40mtrs with his VR3's set at 1.3bar and his Rebreather handsets set at 0.7bar. ( he was lucky and got away with it ).
I keep my vr3 set to 0.7bar and then switch it over to HS when i do the switch on the Rebreather hansets.

Shon.

***jradomski*** · 15th July 2005, 02:00

Quote: (Originally Posted by miker)

My hs is flawless to about 200', I have had several issues past 200'. I believe its due to case distortion. Have tried the recommended conductor positioning but still have issues. On one dive to 325, while passing through 225 or so it went off, on ascent at 225 or so it came back on...go figure.

My group last year used the HS to 150+m.. I routinely break 100m without ANY issues..

What you are describing is that you have the battery tightened TOO much.. the second o-ring trailing side should just make it just into the battery compartment (it should be clearly visable), if its too tight when the case gets compressed a bit the spring eventually "slips" and the computer either resets or shuts off..

If its a tang issue (probably not) start with the tang at a 4 oclock poistion (looking at the comartment with lens up) and it should be bent out slighlty.. Also if its a tang issue you cam add a dab of conductive grease on the tang so it will never lose contact..

The computers are not perfect but what you are describing sounds like incorrect user assembly...

***jradomski*** · 15th July 2005, 02:27

Quote: (Originally Posted by miker)

Did a 260' dive on saturday with a buddy, there was another Inspiration diver and OC guy on the boat. Descent went well, we hot dropped and all hit the wreck...nice start. Planned bottom time of 20 min's. My buddy and I went aft and the other pair went forward, at 20 min we were to all meet and ascend along the superstructure. That all went well, all met up and began to prepare for the ascent. Being the nosy mother I am, I tend to steal looks at peoples handsets when I can...guess what. 20 min at 260 at .7, yep never switched to high setpoint. Pointed at his hand sets and he looked at them and looked back at me like "ok whats wrong?"...wrote on my slate "you never switched to high sp". Then it clicked finally. Then a look of confusion sat in...he had an HS (non integrated) and had switched the HS but not the inspiration. he carries no tables. Fortunately my HS craps on a regular basis so tables are my bread and butter. Fortunately no one got bent and everyone learned a lesson.

Check your handsets...and calculate and verify what they are telling you. Carry tables and a timer just in case, and be prepared to use them.

Mike, if the problem was noticed before the ascent was started the oveall tissue loadings are not that great especially with the short 20m bottom time. I realized a long time ago its not that important to run a very high po2 on bottom as long as you increase it for the ascent.. You dont get that much of a deco penalty and lower your CNS exposure..

I get 66m for gf 10/100 and 78m for rgbm using bottom at .7 and ascent at 1.3 vs 63m gf 10/100 and 70m RGBM. Most of the ascent is very close the main time difference being the 20ft stop.. Running a series of profile you can see in general this type of screw up causes about 10% more deco (for a fair range of dives).. IF you are running the CCR as an oxygen Rebreather at 20fsw (but still calculating it as a 1.3 po2) the deco you actually did, is about what the "wrong" data would have gave you...

I always suggest carrying tables but if you don;t and you know your deco science it can get you out of trouble without it... The deeper you go the less an effect the lower po2 VS High PO2 has, on shallower dives it makes a bigger difference..

(20 fsw as last stop)

Scuba_Vixen · 15th July 2005, 04:33

Quote: (Originally Posted by Drmike)

LOL!

Well at least if nothing else the HS is good for one thing - encourage people to carry tables!

Other than Joe does anyone own a HS that doesnt crap out all the time ???

Just had a brand new Model O crap out on the first dive on my CCR Dolphin project.

My model M that this replaced was *almost* always there when you needed it.

Once you finally get a keeper, don't turn loose of it.

Darlene

13th July 2005, 17:34	#1 (permalink)
miker New Member Current Rebreather/s: Other Rebreather/s: Join Date: Jun 2005 Location: usa, fl Posts: 15	Check your handsets, and carry some tables. Did a 260' dive on saturday with a buddy, there was another Inspiration diver and OC guy on the boat. Descent went well, we hot dropped and all hit the wreck...nice start. Planned bottom time of 20 min's. My buddy and I went aft and the other pair went forward, at 20 min we were to all meet and ascend along the superstructure. That all went well, all met up and began to prepare for the ascent. Being the nosy mother I am, I tend to steal looks at peoples handsets when I can...guess what. 20 min at 260 at .7, yep never switched to high setpoint. Pointed at his hand sets and he looked at them and looked back at me like "ok whats wrong?"...wrote on my slate "you never switched to high sp". Then it clicked finally. Then a look of confusion sat in...he had an HS (non integrated) and had switched the HS but not the inspiration. he carries no tables. Fortunately my HS craps on a regular basis so tables are my bread and butter. Fortunately no one got bent and everyone learned a lesson. Check your handsets...and calculate and verify what they are telling you. Carry tables and a timer just in case, and be prepared to use them.
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14th July 2005, 07:33	#2 (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: 3,128	Quote: (Originally Posted by miker) Fortunately my HS craps on a regular basis so tables are my bread and butter. . LOL! Well at least if nothing else the HS is good for one thing - encourage people to carry tables! Other than Joe does anyone own a HS that doesnt crap out all the time ???
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14th July 2005, 07:44	#3 (permalink)
Pierre Farrugia Custom Title Allowed! Current Rebreather/s: Inspiration Classic Other Rebreather/s: Join Date: Feb 2005 Location: Malta Posts: 636	Quote: (Originally Posted by miker) Did a 260' dive on saturday with a buddy, there was another Inspiration diver and OC guy on the boat. Descent went well, we hot dropped and all hit the wreck...nice start. Planned bottom time of 20 min's. My buddy and I went aft and the other pair went forward, at 20 min we were to all meet and ascend along the superstructure. That all went well, all met up and began to prepare for the ascent. Being the nosy mother I am, I tend to steal looks at peoples handsets when I can...guess what. 20 min at 260 at .7, yep never switched to high setpoint. Pointed at his hand sets and he looked at them and looked back at me like "ok whats wrong?"...wrote on my slate "you never switched to high sp". Then it clicked finally. Then a look of confusion sat in...he had an HS (non integrated) and had switched the HS but not the inspiration. he carries no tables. Fortunately my HS craps on a regular basis so tables are my bread and butter. Fortunately no one got bent and everyone learned a lesson. Check your handsets...and calculate and verify what they are telling you. Carry tables and a timer just in case, and be prepared to use them. Wow that must have changed your profile a lot, what runtime you resored to at the end ? You must have earned a lot of beer for this, well done. So yu also carry 0.7 tabels with you, never tought of this mistake. __________________ Pierre Farrugia My wife told me " If you don't quit diving I'm going to leave you" My reply " God, I'll miss you" www.atlam.org www.divemed.com
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14th July 2005, 09:38	#4 (permalink)
PeteS Consent Issued! Current Rebreather/s: Inspiration Classic Inspiration Vision Other Rebreather/s: Join Date: Jun 2005 Location: New Zealand Posts: 513	Quote: (Originally Posted by Drmike) LOL! Well at least if nothing else the HS is good for one thing - encourage people to carry tables! Other than Joe does anyone own a HS that doesnt crap out all the time ??? My HS is fine. And I've done the opposite error - change the CCR and not the computer. I couldn't work out why I had deco so soon in the dive. __________________ Pete S. http://www.steggle.co.nz Every silver lining has a cloud
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14th July 2005, 09:46	#5 (permalink)
*Beanie* Politeness officer Current Rebreather/s: Inspiration Classic Other Rebreather/s: Inspiration Vision Join Date: Jan 2005 Location: In da house! yeah baby! Posts: 3,198	Quote: (Originally Posted by PeteS) My HS is fine. And I've done the opposite error - change the CCR and not the computer. I couldn't work out why I had deco so soon in the dive. I did that on my VR£ it sulked for that dive __________________ Beanie Gallery Admin & Library Assistant. www.outlawdivers.org.uk www.beandiving.co.uk www.beanengineering.co.uk www.divelife.co.uk
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14th July 2005, 16:08	#6 (permalink)
miker New Member Current Rebreather/s: Other Rebreather/s: Join Date: Jun 2005 Location: usa, fl Posts: 15	My hs is flawless to about 200', I have had several issues past 200'. I believe its due to case distortion. Have tried the recommended conductor positioning but still have issues. On one dive to 325, while passing through 225 or so it went off, on ascent at 225 or so it came back on...go figure.
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14th July 2005, 16:16	#7 (permalink)
Shon Roberts Shon Roberts Current Rebreather/s: Inspiration Classic Other Rebreather/s: Join Date: Mar 2005 Location: uk Posts: 16	From what I have seen and heard forgetting to switch to the HS happens quite a lot. I know quite a few people who just leave their VR3's permantly switched to the HS which aint good if you forget to switch the hansets to you HS. A friend of mine did just that and spent 30min finning around a wreck at 40mtrs with his VR3's set at 1.3bar and his Rebreather handsets set at 0.7bar. ( he was lucky and got away with it ). I keep my vr3 set to 0.7bar and then switch it over to HS when i do the switch on the Rebreather hansets. Shon. __________________ DeepDiver
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15th July 2005, 02:00	#8 (permalink)
*jradomski* Moderator Current Rebreather/s: Inspiration Classic Sport Kiss Optima rEvo Other CCR Home Build Other Rebreather/s: Inspiration Vision Evolution Megalodon Classic Kiss rEvo Other CCR Home Build Join Date: Mar 2005 Location: "Da" Bronx Posts: 2,870	Quote: (Originally Posted by miker) My hs is flawless to about 200', I have had several issues past 200'. I believe its due to case distortion. Have tried the recommended conductor positioning but still have issues. On one dive to 325, while passing through 225 or so it went off, on ascent at 225 or so it came back on...go figure. My group last year used the HS to 150+m.. I routinely break 100m without ANY issues.. What you are describing is that you have the battery tightened TOO much.. the second o-ring trailing side should just make it just into the battery compartment (it should be clearly visable), if its too tight when the case gets compressed a bit the spring eventually "slips" and the computer either resets or shuts off.. If its a tang issue (probably not) start with the tang at a 4 oclock poistion (looking at the comartment with lens up) and it should be bent out slighlty.. Also if its a tang issue you cam add a dab of conductive grease on the tang so it will never lose contact.. The computers are not perfect but what you are describing sounds like incorrect user assembly... __________________ Joe Radomski CCR Trimix Instructor Trainer ANDI Instructor Trainer Director #10 All posts are personal opinions and DO NOT reflect any affiliated agency unless specifically stated.
(Online)

15th July 2005, 02:27	#9 (permalink)
*jradomski* Moderator Current Rebreather/s: Inspiration Classic Sport Kiss Optima rEvo Other CCR Home Build Other Rebreather/s: Inspiration Vision Evolution Megalodon Classic Kiss rEvo Other CCR Home Build Join Date: Mar 2005 Location: "Da" Bronx Posts: 2,870	Quote: (Originally Posted by miker) Did a 260' dive on saturday with a buddy, there was another Inspiration diver and OC guy on the boat. Descent went well, we hot dropped and all hit the wreck...nice start. Planned bottom time of 20 min's. My buddy and I went aft and the other pair went forward, at 20 min we were to all meet and ascend along the superstructure. That all went well, all met up and began to prepare for the ascent. Being the nosy mother I am, I tend to steal looks at peoples handsets when I can...guess what. 20 min at 260 at .7, yep never switched to high setpoint. Pointed at his hand sets and he looked at them and looked back at me like "ok whats wrong?"...wrote on my slate "you never switched to high sp". Then it clicked finally. Then a look of confusion sat in...he had an HS (non integrated) and had switched the HS but not the inspiration. he carries no tables. Fortunately my HS craps on a regular basis so tables are my bread and butter. Fortunately no one got bent and everyone learned a lesson. Check your handsets...and calculate and verify what they are telling you. Carry tables and a timer just in case, and be prepared to use them. Mike, if the problem was noticed before the ascent was started the oveall tissue loadings are not that great especially with the short 20m bottom time. I realized a long time ago its not that important to run a very high po2 on bottom as long as you increase it for the ascent.. You dont get that much of a deco penalty and lower your CNS exposure.. I get 66m for gf 10/100 and 78m for rgbm using bottom at .7 and ascent at 1.3 vs 63m gf 10/100 and 70m RGBM. Most of the ascent is very close the main time difference being the 20ft stop.. Running a series of profile you can see in general this type of screw up causes about 10% more deco (for a fair range of dives).. IF you are running the CCR as an oxygen Rebreather at 20fsw (but still calculating it as a 1.3 po2) the deco you actually did, is about what the "wrong" data would have gave you... I always suggest carrying tables but if you don;t and you know your deco science it can get you out of trouble without it... The deeper you go the less an effect the lower po2 VS High PO2 has, on shallower dives it makes a bigger difference.. (20 fsw as last stop) __________________ Joe Radomski CCR Trimix Instructor Trainer ANDI Instructor Trainer Director #10 All posts are personal opinions and DO NOT reflect any affiliated agency unless specifically stated.
(Online)

15th July 2005, 04:33	#10 (permalink)
Scuba_Vixen e/mCCR Dolphin Pilot Current Rebreather/s: Other CCR Home Build Other Rebreather/s: Other CCR Home Build Join Date: May 2005 Location: St. Croix USVI Posts: 557	Quote: (Originally Posted by Drmike) LOL! Well at least if nothing else the HS is good for one thing - encourage people to carry tables! Other than Joe does anyone own a HS that doesnt crap out all the time ??? Just had a brand new Model O crap out on the first dive on my CCR Dolphin project. My model M that this replaced was almost always there when you needed it. Once you finally get a keeper, don't turn loose of it. Darlene
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