did you swap your MK2 reg with DS4?

Outlaw · 9th March 2008, 12:25

hello guys,

as ISC officially started promoting its units with DS4 regulators, for all those that had purchased their unit before, (they came with MK2s ) did you swap them for DS4 or did you stay with the ones you had (MK2s)? in case you did, can you explain why you did this?

am thinking, as to what ups and down there may be to my existing regs, instead of the DS4...

Thanks

Spyros

ibbo · 13th March 2008, 19:35

my high pressure swivel popped one day, so i now have a dst on the o2 and a mk2 with a pony gauge on it for pressure. found the mk2 fine, but was very wary of the swivel going again and loosing all, or some, at least of my gas.

the dst lines the hoses up pretty well, but is noticeably heavier.

Outlaw · 13th March 2008, 19:42

Thanks Ibbo,

how about perfomance wise? better or worst? or same?

Thanks.

Dive!Dive! · 13th March 2008, 19:47

I've had US4's on mine since new. They've been in water from 4degC to 30degC and work fine. Hose alignment is good and they are nice and compact.
Easy access to spares are well.
Steve

mortenkjerulff · 13th March 2008, 21:06

Hi Spyros.

I changed my MK2s to MK11s.
I did this mainly to avoid the HP elbows but also to get a slightly better routing of hoses.

Cheers
Morten

Quote: (Originally Posted by Outlaw)

hello guys,

as ISC officially started promoting its units with DS4 regulators, for all those that had purchased their unit before, (they came with MK2s ) did you swap them for DS4 or did you stay with the ones you had (MK2s)? in case you did, can you explain why you did this?

am thinking, as to what ups and down there may be to my existing regs, instead of the DS4...

Thanks

Spyros

Skipbreather · 14th March 2008, 03:25

My MK2s are paid for

& haven't missed a beat. Compared to the Sherwoods in the stock MK15- which do the job fine- they are downright exotic. Simple as dirt to work on. My swivels are M&J- there are none better. I have no plans to change either.

**wedivebc** · 14th March 2008, 04:07

I don't believe there was anything wrong with the scubapro regs and the change was made because the COPIS required a non-compensating IP reg and that is easy to accomplish with the DS4

Outlaw · 14th March 2008, 09:22

Thanks guys,

i dont really plan to change mine, just wanted to see what people who have tried both, have to say about it.

i am sure they must have noticed something. personally iam still not that clear between balanced, unbalanced and fixed ip...

Thanks.

**wedivebc** · 14th March 2008, 13:37

Quote: (Originally Posted by Outlaw)

Thanks guys,

i dont really plan to change mine, just wanted to see what people who have tried both, have to say about it.

i am sure they must have noticed something. personally iam still not that clear between balanced, unbalanced and fixed ip...

Thanks.

It has nothing to do with balanced, fixed IP is where the absolute pressure of the first stage does not increase with ambient. Most regs IP goes up as you go deeper. This is not desirable in a mCCR such as the COPIS as it would cause the O2 level to rise. Performance of a reg used in a CCR (unless you have a BOV) is of very little consequence. Even the worst regs should perform well enough for a CCR gas requirements.
ISC changed brands to accomodate the COPIS and it makes no sense to use 2 different brands in house.

Lancer4545 · 14th March 2008, 23:39

Hey Spyros,

I emailled ISC and asked the question as I was wanting to standardise all my regs and wanted to have all APEKS.

The reply I got back was that they use DS4 O2 cleaned regs which are exactally the same as the ones you can buy with the only difference being the bottom nut which they specially made for ISC to make them look a bit "Cooler" than the standard ones.

I have had mine fitted for a while now and am pleased to say they have been working perfectly so far.

Have fun diving the HMS Victoria!!!! And I expect to see plenty of pics

Regards,

Lance

9th March 2008, 12:25	#1 (permalink)
Outlaw In search of Law breaking Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Aug 2006 Location: Cyprus, Nicosia Posts: 634	did you swap your MK2 reg with DS4? hello guys, as ISC officially started promoting its units with DS4 regulators, for all those that had purchased their unit before, (they came with MK2s ) did you swap them for DS4 or did you stay with the ones you had (MK2s)? in case you did, can you explain why you did this? am thinking, as to what ups and down there may be to my existing regs, instead of the DS4... Thanks Spyros __________________ CMAS - IANTD - TDI Kamikazi Instrustor Trainer DIRRebreather Team Member ---------------------------- "Once an Outlaw, always an Outlaw"
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13th March 2008, 19:35	#2 (permalink)
ibbo New Member Current Rebreather/s: Not Bought Yet Other Rebreather/s: Not Bought Yet Join Date: Nov 2005 Location: east yorks uk Posts: 12	Re: did you swap your MK2 reg with DS4? my high pressure swivel popped one day, so i now have a dst on the o2 and a mk2 with a pony gauge on it for pressure. found the mk2 fine, but was very wary of the swivel going again and loosing all, or some, at least of my gas. the dst lines the hoses up pretty well, but is noticeably heavier.
(Offline)

13th March 2008, 19:42	#3 (permalink)
Outlaw In search of Law breaking Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Aug 2006 Location: Cyprus, Nicosia Posts: 634	Re: did you swap your MK2 reg with DS4? Thanks Ibbo, how about perfomance wise? better or worst? or same? Thanks. __________________ CMAS - IANTD - TDI Kamikazi Instrustor Trainer DIRRebreather Team Member ---------------------------- "Once an Outlaw, always an Outlaw"
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13th March 2008, 19:47	#4 (permalink)
Dive!Dive! Custom Title Allowed! Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Sep 2006 Location: Somerset, UK Posts: 94	Re: did you swap your MK2 reg with DS4? I've had US4's on mine since new. They've been in water from 4degC to 30degC and work fine. Hose alignment is good and they are nice and compact. Easy access to spares are well. Steve
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13th March 2008, 21:06	#5 (permalink)
mortenkjerulff Customise Me! Current Rebreather/s: Megalodon Other Rebreather/s: Not Bought Yet Join Date: Mar 2005 Location: Denmark Posts: 145	Re: did you swap your MK2 reg with DS4? Hi Spyros. I changed my MK2s to MK11s. I did this mainly to avoid the HP elbows but also to get a slightly better routing of hoses. Cheers Morten Quote: (Originally Posted by Outlaw) hello guys, as ISC officially started promoting its units with DS4 regulators, for all those that had purchased their unit before, (they came with MK2s ) did you swap them for DS4 or did you stay with the ones you had (MK2s)? in case you did, can you explain why you did this? am thinking, as to what ups and down there may be to my existing regs, instead of the DS4... Thanks Spyros
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14th March 2008, 03:25	#6 (permalink)
Skipbreather Reads the fine print Current Rebreather/s: Megalodon Home Build Other Rebreather/s: Not Bought Yet MK 15.X Home Build Join Date: Mar 2005 Location: Chicago, Illinois, USA Posts: 557	Re: did you swap your MK2 reg with DS4? My MK2s are paid for & haven't missed a beat. Compared to the Sherwoods in the stock MK15- which do the job fine- they are downright exotic. Simple as dirt to work on. My swivels are M&J- there are none better. I have no plans to change either. __________________ "Entropy RULES! Enjoy the interim."
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14th March 2008, 04:07	#7 (permalink)
wedivebc Dave Tomblin Current Rebreather/s: Megalodon Other CCR Other Rebreather/s: Not Bought Yet Inspiration Classic Sport Kiss Other CCR Join Date: Feb 2005 Location: Vancouver Island BC Canada Posts: 1,446	Re: did you swap your MK2 reg with DS4? I don't believe there was anything wrong with the scubapro regs and the change was made because the COPIS required a non-compensating IP reg and that is easy to accomplish with the DS4 __________________ Cheers, Dave.... Man is the only animal burdened with the knowledge he will eventually die
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14th March 2008, 09:22	#8 (permalink)
Outlaw In search of Law breaking Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Aug 2006 Location: Cyprus, Nicosia Posts: 634	Re: did you swap your MK2 reg with DS4? Thanks guys, i dont really plan to change mine, just wanted to see what people who have tried both, have to say about it. i am sure they must have noticed something. personally iam still not that clear between balanced, unbalanced and fixed ip... Thanks. __________________ CMAS - IANTD - TDI Kamikazi Instrustor Trainer DIRRebreather Team Member ---------------------------- "Once an Outlaw, always an Outlaw"
(Offline)

14th March 2008, 13:37	#9 (permalink)
wedivebc Dave Tomblin Current Rebreather/s: Megalodon Other CCR Other Rebreather/s: Not Bought Yet Inspiration Classic Sport Kiss Other CCR Join Date: Feb 2005 Location: Vancouver Island BC Canada Posts: 1,446	Re: did you swap your MK2 reg with DS4? Quote: (Originally Posted by Outlaw) Thanks guys, i dont really plan to change mine, just wanted to see what people who have tried both, have to say about it. i am sure they must have noticed something. personally iam still not that clear between balanced, unbalanced and fixed ip... Thanks. It has nothing to do with balanced, fixed IP is where the absolute pressure of the first stage does not increase with ambient. Most regs IP goes up as you go deeper. This is not desirable in a mCCR such as the COPIS as it would cause the O2 level to rise. Performance of a reg used in a CCR (unless you have a BOV) is of very little consequence. Even the worst regs should perform well enough for a CCR gas requirements. ISC changed brands to accomodate the COPIS and it makes no sense to use 2 different brands in house. __________________ Cheers, Dave.... Man is the only animal burdened with the knowledge he will eventually die
(Offline)

14th March 2008, 23:39	#10 (permalink)
Lancer4545 Closed Circuit Divers Aus Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Jun 2007 Location: Cairns QLD Australia Posts: 664	Re: did you swap your MK2 reg with DS4? Hey Spyros, I emailled ISC and asked the question as I was wanting to standardise all my regs and wanted to have all APEKS. The reply I got back was that they use DS4 O2 cleaned regs which are exactally the same as the ones you can buy with the only difference being the bottom nut which they specially made for ISC to make them look a bit "Cooler" than the standard ones. I have had mine fitted for a while now and am pleased to say they have been working perfectly so far. Have fun diving the HMS Victoria!!!! And I expect to see plenty of pics Regards, Lance __________________ You can run but you can't hide! ISC Appointed Megalodon Dealer for East Australia http://www.closedcircuitdivers.com.au info@closedcircuitdivers.com.au
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