Vr3 4th cell

Pierre Farrugia · 24th April 2005, 14:10

Hello all,

Is the 4 th cell worth the hassle ? Does the Kit from Delta P has the extra cell needed ? What is involved in the setting up procedure before a dive? Any other things to know about ?

Regards

Pierre Farrugia

***Decodiver*** · 24th April 2005, 16:54

Hi Pierre,

Personally, I could never be bothered. You already have 3 cells on your unit, that should IMHO be enough.

Cheers,

Dave Cooper.

***schford*** · 24th April 2005, 18:21

OK so I have a meg not an Inspiration but I am not going with the 4th Cell either just going to run the computer with a slightly lower set point than my actual to give a bit of margin for error.
I know this is how Leon & ron do it too.

Stuart

Jason Blackwell · 26th April 2005, 08:18

I had the the Y adaptor on one of the the Inspirations and not on the other one. I have started in not connecting the 4th cell, and I do not intend to add the 4th cell to the Evo when it arrives.

Calibrating the 4th cell is a little bit different, but if you follow the instructions

,........I have never actually had a problem with it.

Mdemon · 26th April 2005, 10:48

Hmmmm. Just bought one from Mr Greekbird (if I ever catch up with him!) and I think it's more useful for me to cover handset failure rather than more accurate deco.

***Beanie*** · 26th April 2005, 10:54

don't like the Y adaptor
do like the idea of fourth cell so may go for one inside the unit

Mdemon · 26th April 2005, 11:08

Non-y adapter options:

Extension to T-piece (old style VR£ holder)
Drill case and add connector as per David Pelly mod on the RebreatherSite
Buy extended tube and add cable + gland to the extended bit poking out of the head.

Anyone have any pro's/cons?

1. - Seems closer to air actually going into mouthpiece but how does ADV affect things? Tracking will be different to Head cells?

2. - Extra bits. Should track well. Nice, but drilling head will invalidate warrenty and looks sooooooo scarey...
3. - ~£50 for a plastic tube and a couple of quid for the gland... Should track well. Looking like cheapest/safest option...

ROB DAVIE · 26th April 2005, 13:27

Folks,

I like the fourth cell idea for this one reason. If your handsets crap out, you can hand-fly the unit using the fourth cell read-out, and deco does not change in any respect. Makes life easy. Also, it gives you a cross-check on the system.

Just my PPO2's worth.

Rob

pchanning · 26th April 2005, 14:02

Hi John,

Quote: (Originally Posted by Mdemon)

Non-y adapter options:

Extension to T-piece (old style VR£ holder)
Drill case and add connector as per David Pelly mod on the RebreatherSite
Buy extended tube and add cable + gland to the extended bit poking out of the head.

Anyone have any pro's/cons?

1. - Seems closer to air actually going into mouthpiece but how does ADV affect things? Tracking will be different to Head cells?

not if you screaw it in above the ADV.

2. - Extra bits. Should track well. Nice, but drilling head will invalidate warrenty and looks sooooooo scarey...

Apparantly APD wont supply 'blank' cell holder tubes (for drilling of the forth). However you could always get a bit of plastic pipe and weld it inplace of the standard three holed black bit (sorry for the technical terms). Still gotta drill the case though.

3. - ~£50 for a plastic tube and a couple of quid for the gland... Should track well. Looking like cheapest/safest option...

hmmm, dont forget a bit of luck and some big 'ol brass ones

Youre earlier comment justifying it due to failed handsets and staying on the loop is what its for. If i'd of had a VR3 last month that option would have been very handy

Local concensus seems to be that the alledged "accurate tracking" doesn't make that much of a difference to run times, and besides why trust one cell to get out quicker when it really matters over three that you trust for all other dives. What's the rush..??
Do a dil flush on the descent and an o2 flush on the ascent. Problem solved.

ATB

Paul

Mdemon · 26th April 2005, 15:13

Hello mate!

Stop mucking about in Cornwall and come diving! I'm going to be doing the Usual on Wednesday if you're interested...

1. - Yup, after the ADV would be good, and maybe the ADV could blast moisture off cell face too... The advantage of having the cell there is if the scrubber partially floods, you still have some method of measuring PO2... Apparently it is possible to limp home on a flooded Box...

2. - Yup again! However, if you skim through the posts for the 6 hour scrubber you will also come across this cute link from yours truely...

http://www.divelife.co.uk/Index/esse...CellHolder.htm

This has various flavours of the tune, with or without the cable. The best bit is that you are drilling the pipe, not the case, so if you screw it up you haven't shagged your Head...

24th April 2005, 14:10	#1 (permalink)
Pierre Farrugia Custom Title Allowed! Current Rebreather/s: Inspiration Classic Other Rebreather/s: Join Date: Feb 2005 Location: Malta Posts: 636	Vr3 4th cell Hello all, Is the 4 th cell worth the hassle ? Does the Kit from Delta P has the extra cell needed ? What is involved in the setting up procedure before a dive? Any other things to know about ? Regards Pierre Farrugia __________________ 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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24th April 2005, 16:54	#2 (permalink)
*Decodiver* Administrator Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Jan 2005 Location: Geneva Posts: 2,181	Hi Pierre, Personally, I could never be bothered. You already have 3 cells on your unit, that should IMHO be enough. Cheers, Dave Cooper. __________________ CCR/OC Trimix Instructor Trainer CCR Training to Mixed Gas in Switzerland, France, UK & Germany on Megalodon/COPIS-Megalodon/KISS/Sport KISS/Ouroboros/rEvo/Inspiration/Evolution/Sentinel www.zerogravitydiving.com Rebreather World Terms & Conditions
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24th April 2005, 18:21	#3 (permalink)
*schford* Despotic Overlord Current Rebreather/s: Megalodon Sport Kiss Other Rebreather/s: Join Date: Jan 2005 Location: London, UK Posts: 3,562	OK so I have a meg not an Inspiration but I am not going with the 4th Cell either just going to run the computer with a slightly lower set point than my actual to give a bit of margin for error. I know this is how Leon & ron do it too. Stuart
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26th April 2005, 08:18	#4 (permalink)
Jason Blackwell Bloody Rebreathers! Current Rebreather/s: Inspiration Classic Sport Kiss Optima Dolphin Ray Other Rebreather/s: Not Bought Yet Inspiration Vision Evolution Classic Kiss Dolphin Ray Join Date: Feb 2005 Location: Brisbane, Queensland, AUSTRALIA Posts: 361	I had the the Y adaptor on one of the the Inspirations and not on the other one. I have started in not connecting the 4th cell, and I do not intend to add the 4th cell to the Evo when it arrives. Calibrating the 4th cell is a little bit different, but if you follow the instructions ,........I have never actually had a problem with it. __________________ Jason Blackwell TDI Instructor Trainer #1358 Optima...Inspiration/Evolution...KISS...and what is next??? www.divedivedive.com.au OZTeK '09 March 2009 Sydney, Australia www.diveoztek.com.au
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26th April 2005, 10:48	#5 (permalink)
Mdemon SiegeEngine II Current Rebreather/s: Inspiration Classic Home Build Other Rebreather/s: Inspiration Classic Home Build Join Date: Feb 2007 Location: SWUK Posts: 1,927	Hmmmm. Just bought one from Mr Greekbird (if I ever catch up with him!) and I think it's more useful for me to cover handset failure rather than more accurate deco. __________________ www.southwestmafia.com "small minds talk about people, Average Minds Talk About Events, GREAT MINDS TALK ABOUT IDEAS!" The WRONG Attitude will get you killed. "Once the agenda-monkeys and perfect-worlders have moved on, perhaps we can do some diving?"
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26th April 2005, 10:54	#6 (permalink)
*Beanie* give a man an inch....... Current Rebreather/s: Inspiration Classic Other Rebreather/s: Inspiration Vision Join Date: Jan 2005 Location: In da house! yeah baby! Posts: 3,177	don't like the Y adaptor do like the idea of fourth cell so may go for one inside the unit __________________ Beanie Gallery Admin & Library Assistant. www.outlawdivers.org.uk www.beandiving.co.uk www.beanengineering.co.uk
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26th April 2005, 11:08	#7 (permalink)
Mdemon SiegeEngine II Current Rebreather/s: Inspiration Classic Home Build Other Rebreather/s: Inspiration Classic Home Build Join Date: Feb 2007 Location: SWUK Posts: 1,927	Non-y adapter options: Extension to T-piece (old style VR£ holder) Drill case and add connector as per David Pelly mod on the RebreatherSite Buy extended tube and add cable + gland to the extended bit poking out of the head. Anyone have any pro's/cons? 1. - Seems closer to air actually going into mouthpiece but how does ADV affect things? Tracking will be different to Head cells? 2. - Extra bits. Should track well. Nice, but drilling head will invalidate warrenty and looks sooooooo scarey... 3. - ~£50 for a plastic tube and a couple of quid for the gland... Should track well. Looking like cheapest/safest option... __________________ www.southwestmafia.com "small minds talk about people, Average Minds Talk About Events, GREAT MINDS TALK ABOUT IDEAS!" The WRONG Attitude will get you killed. "Once the agenda-monkeys and perfect-worlders have moved on, perhaps we can do some diving?"
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26th April 2005, 13:27	#8 (permalink)
ROB DAVIE Administrator Current Rebreather/s: Inspiration Classic Other Rebreather/s: Join Date: Feb 2005 Location: HOUSTON, REPUBLIC OF TEJAS Posts: 1,120	Fourth cell.... Folks, I like the fourth cell idea for this one reason. If your handsets crap out, you can hand-fly the unit using the fourth cell read-out, and deco does not change in any respect. Makes life easy. Also, it gives you a cross-check on the system. Just my PPO2's worth. Rob __________________ [SIZE=2]"CC Rebreathers will become a viable part of tech diving [U]WHEN PIGS FLY[/U]!!"--GI3[/SIZE]
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26th April 2005, 14:02	#9 (permalink)
pchanning PFO free :) Current Rebreather/s: Inspiration Classic Other Rebreather/s: Join Date: Feb 2005 Location: fixed! Posts: 454	Hi John, Quote: (Originally Posted by Mdemon) Non-y adapter options: Extension to T-piece (old style VR£ holder) Drill case and add connector as per David Pelly mod on the RebreatherSite Buy extended tube and add cable + gland to the extended bit poking out of the head. Anyone have any pro's/cons? 1. - Seems closer to air actually going into mouthpiece but how does ADV affect things? Tracking will be different to Head cells? not if you screaw it in above the ADV. 2. - Extra bits. Should track well. Nice, but drilling head will invalidate warrenty and looks sooooooo scarey... Apparantly APD wont supply 'blank' cell holder tubes (for drilling of the forth). However you could always get a bit of plastic pipe and weld it inplace of the standard three holed black bit (sorry for the technical terms). Still gotta drill the case though. 3. - ~£50 for a plastic tube and a couple of quid for the gland... Should track well. Looking like cheapest/safest option... hmmm, dont forget a bit of luck and some big 'ol brass ones Youre earlier comment justifying it due to failed handsets and staying on the loop is what its for. If i'd of had a VR3 last month that option would have been very handy Local concensus seems to be that the alledged "accurate tracking" doesn't make that much of a difference to run times, and besides why trust one cell to get out quicker when it really matters over three that you trust for all other dives. What's the rush..?? Do a dil flush on the descent and an o2 flush on the ascent. Problem solved. ATB Paul
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26th April 2005, 15:13	#10 (permalink)
Mdemon SiegeEngine II Current Rebreather/s: Inspiration Classic Home Build Other Rebreather/s: Inspiration Classic Home Build Join Date: Feb 2007 Location: SWUK Posts: 1,927	Hello mate! Stop mucking about in Cornwall and come diving! I'm going to be doing the Usual on Wednesday if you're interested... 1. - Yup, after the ADV would be good, and maybe the ADV could blast moisture off cell face too... The advantage of having the cell there is if the scrubber partially floods, you still have some method of measuring PO2... Apparently it is possible to limp home on a flooded Box... 2. - Yup again! However, if you skim through the posts for the 6 hour scrubber you will also come across this cute link from yours truely... http://www.divelife.co.uk/Index/esse...CellHolder.htm This has various flavours of the tune, with or without the cable. The best bit is that you are drilling the pipe, not the case, so if you screw it up you haven't shagged your Head... __________________ www.southwestmafia.com "small minds talk about people, Average Minds Talk About Events, GREAT MINDS TALK ABOUT IDEAS!" The WRONG Attitude will get you killed. "Once the agenda-monkeys and perfect-worlders have moved on, perhaps we can do some diving?"
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