Been diving with a modified setup … only 40” primary with a 70deg swivel. No need for a mile of hose for warm water reef and non penetrating wreck dives.
Since primary donate is getting a bit more popular there really should be a disscusion started, since every beginner is trained to seak for the yellow thing to get air from another diver in an out-of-air situation, it's really makes these situation much more dangerous when having no yellow air-sharing 2nd stage in a long hose setup. To get air in an emergency must never be a guessing game! By now it should be mandatory if primary donate is used that the primary has to be yellow.
@@ScubaDiverMagazine don't get me wrong, the problem is not awareness or training, it's just the lack of following the established color convention. And most of the diving instructors u find on yt promote or explane primary donate setups without following that basic life-saving convention of yellow = "the air you can grab anytime without pemission". In an life or death situation with just secounds left no one should have to "think" or guess which configuration that air donator has, just gab the yellow thing. Imagine you have no air and have to approch someone from behind ... when there is a real emergency there is no time to swim around him to signal "i have no air please may you give me the thing you are breathing from" or even turn the air donator around by force (in hope he does not fight back) to look which configuration he dives only to check which of the two trained procedures i have to follow. 30 year ago i was told long hose setups are only for cave and wreak diving cause you may not have the space of diving side by side when donating air, in all other cases there are clear disandvantages which are not getting communicated now a days. As you have to be fine with getting your 2nd stage riped out of your mouth from behind any time or someone may die ...
Hi Mark! Hope that you are in the best of health. Thank you for the video, For me it was educational and full of grate info. I am really thankful for you that you took the time to read my question and making this video as an answer. I am going to use all the info here to setup my first long hose configuration. Hope it will be perfect. Once again much appreciated for the video. Hope that you make a video on how to choose the right backplate wing and harness. And your top 10 picks of B/W/H video.
#askmark I have set up a Long hose primary donate configuration thanks to you. I was told by my local dive shop that it isn't a good idea to put a swivel on the short hose portion of my second stage tha is on the necklace around my neck. He said it was ok to use a 90 but a swivel is not a good practice. Whay is this? Thanks in advance for your help.
Swivel joints are OK but not great. They can fail based on their design if you don't tighten them periodically. The usual design is two hemispheres with a central screw connection holding the two halves together. The way that the two halves twist and rotate through normal use can slowly unscrew the connection until the O-Ring fails unless you tighten the screw before this happens. I've seen it on a dive and had to help the diver back to the surface. A traditional fixed elbow joint is less likely to fail. It's really down to you, you can certainly use a swivel as long as you remember to tighten the joint frequently between dives
I have seen quite a few divers with primary donate setups in past couple of yrs and I like the idea of and look of this setup and would like to switch....I have a mares x52 with 2 dual adj second stages with the built in little tube airflow divert not the ventury leaver are these ok to use as my secondary rou d my neck as when held in bunnies ( lol dam auto spelling bungies) around my neck reg would be face up not face down to stop free flow...... they do have adjust dials on side will this be enough to stop free flow. Thank you in advance ( I am looking at the myflex xt tech hoses to mix light weight and not scratchy round neck )
Yes, the Dual ADJ 52X will work fine. It's been a while since I've played with a 52X and one of the LP ports might be the larger 1/2" size which can make it a harder to find the right hose. I don't know if Miflex make a 1/2" XT-Tech hose. Remove the hose from the 1st stage and see if the thread measures 1/2" across or 3/8". The port on the 1st stage also has a telltale tube sticking out of it, if it is a 1/2" port then you may be limited to what hose can come out from it and you may need to invert the 1st stage.
@ScubaDiverMagazine so no problem with the adj regs free flowing on necklace....I will measure port port to check size before ordering but don't think I've noticed it being larger ...thank you
question here. Can I use any 2 second stages or do they have to be specific for the task? I'm planning on seting one up and I don't know if I can use the ones I have or buying new ones.
It depends... Most 2nd stages work in very similar ways but, they are often set up to work with different interstage pressures. Mixing models and brands can void warranties also so, while combinations may work, it can void some warranties.
Hi Mark, regarding your comments about the scratchiness and floatiness of braided hoses... would there be a chance to have you compairing them to the new Miflex XT Tech hoses (which apparently should solve both problems)? It would be nice to get your opinion about them . Are they the problem-solvers as they are advertised? #askmark Thank you very much with best regards from Berlin, kulkuri
Every time you say 'BCD' the captions say 'obesity' so when you discuss low pressure hoses it says 'low pressure hoses they very much depend on your obesity.'
#askmark I'd like to get into sidemount diving in the future, and have been looking at various brands and setups. From the Razor 4 (the OG I believe), the Apeks WSX (the Razor copy), and the X-Deep Stealth to the Hollis Katana. And to be honest... I'm completely lost. Could you do a comparison highlighting pros and cons of the various harnesses and bladders?
Tucking the longhose under your waist band works well for me. No need to hook it on a knife, cannister or hose retainer peg. Long hose primary donate is the way to go. I've never had anyone too upset when I explain to a buddy that they should take/expect the one from my mouth because it's on a long hose and you know it's ready to go because I was just using it.
Been diving with a modified setup … only 40” primary with a 70deg swivel. No need for a mile of hose for warm water reef and non penetrating wreck dives.
Thanks!
Thanks Dude, I do my best to help out
Since primary donate is getting a bit more popular there really should be a disscusion started, since every beginner is trained to seak for the yellow thing to get air from another diver in an out-of-air situation, it's really makes these situation much more dangerous when having no yellow air-sharing 2nd stage in a long hose setup. To get air in an emergency must never be a guessing game! By now it should be mandatory if primary donate is used that the primary has to be yellow.
100%, we need more awareness of different configurations in foundational courses
@@ScubaDiverMagazine don't get me wrong, the problem is not awareness or training, it's just the lack of following the established color convention. And most of the diving instructors u find on yt promote or explane primary donate setups without following that basic life-saving convention of yellow = "the air you can grab anytime without pemission". In an life or death situation with just secounds left no one should have to "think" or guess which configuration that air donator has, just gab the yellow thing. Imagine you have no air and have to approch someone from behind ... when there is a real emergency there is no time to swim around him to signal "i have no air please may you give me the thing you are breathing from" or even turn the air donator around by force (in hope he does not fight back) to look which configuration he dives only to check which of the two trained procedures i have to follow. 30 year ago i was told long hose setups are only for cave and wreak diving cause you may not have the space of diving side by side when donating air, in all other cases there are clear disandvantages which are not getting communicated now a days. As you have to be fine with getting your 2nd stage riped out of your mouth from behind any time or someone may die ...
@@ScubaDiverMagazine sry about the rant ... watched to many dive accident videos lately.
Very interesting 👍
Hi Mark!
Hope that you are in the best of health.
Thank you for the video, For me it was educational and full of grate info. I am really thankful for you that you took the time to read my question and making this video as an answer.
I am going to use all the info here to setup my first long hose configuration. Hope it will be perfect.
Once again much appreciated for the video.
Hope that you make a video on how to choose the right backplate wing and harness. And your top 10 picks of B/W/H video.
have you done one on low pressure 2nd stages ie for compressor-based hookah? This was a very useful video - thank you!
Hi Mark, did you get the long hose twin tank set up video done? Thanks.
tx cheers.
#askmark
I have set up a Long hose primary donate configuration thanks to you. I was told by my local dive shop that it isn't a good idea to put a swivel on the short hose portion of my second stage tha is on the necklace around my neck. He said it was ok to use a 90 but a swivel is not a good practice. Whay is this? Thanks in advance for your help.
Swivel joints are OK but not great. They can fail based on their design if you don't tighten them periodically.
The usual design is two hemispheres with a central screw connection holding the two halves together. The way that the two halves twist and rotate through normal use can slowly unscrew the connection until the O-Ring fails unless you tighten the screw before this happens.
I've seen it on a dive and had to help the diver back to the surface. A traditional fixed elbow joint is less likely to fail.
It's really down to you, you can certainly use a swivel as long as you remember to tighten the joint frequently between dives
Nice reference cutaways Mark!
8:30 Call that a dive knife!? ;D
Great advice on hose tightness, and technique!
Omniswivel 2.0 !
I have seen quite a few divers with primary donate setups in past couple of yrs and I like the idea of and look of this setup and would like to switch....I have a mares x52 with 2 dual adj second stages with the built in little tube airflow divert not the ventury leaver are these ok to use as my secondary rou d my neck as when held in bunnies ( lol dam auto spelling bungies) around my neck reg would be face up not face down to stop free flow...... they do have adjust dials on side will this be enough to stop free flow. Thank you in advance ( I am looking at the myflex xt tech hoses to mix light weight and not scratchy round neck )
Yes, the Dual ADJ 52X will work fine. It's been a while since I've played with a 52X and one of the LP ports might be the larger 1/2" size which can make it a harder to find the right hose. I don't know if Miflex make a 1/2" XT-Tech hose.
Remove the hose from the 1st stage and see if the thread measures 1/2" across or 3/8". The port on the 1st stage also has a telltale tube sticking out of it, if it is a 1/2" port then you may be limited to what hose can come out from it and you may need to invert the 1st stage.
@ScubaDiverMagazine so no problem with the adj regs free flowing on necklace....I will measure port port to check size before ordering but don't think I've noticed it being larger ...thank you
question here. Can I use any 2 second stages or do they have to be specific for the task? I'm planning on seting one up and I don't know if I can use the ones I have or buying new ones.
It depends...
Most 2nd stages work in very similar ways but, they are often set up to work with different interstage pressures. Mixing models and brands can void warranties also so, while combinations may work, it can void some warranties.
@@ScubaDiverMagazine perfect, I'll see what I can do. Thank you for the fast reply!
Hi Mark,
Thank you for the video. Would it be a good idea to add an OmniSwivel SW-S or similar adaptor to make the long hose more streamlined?
Hi Mark,
regarding your comments about the scratchiness and floatiness of braided hoses... would there be a chance to have you compairing them to the new Miflex XT Tech hoses (which apparently should solve both problems)? It would be nice to get your opinion about them . Are they the problem-solvers as they are advertised? #askmark
Thank you very much
with best regards from Berlin,
kulkuri
Every time you say 'BCD' the captions say 'obesity' so when you discuss low pressure hoses it says 'low pressure hoses they very much depend on your obesity.'
#askmark
I'd like to get into sidemount diving in the future, and have been looking at various brands and setups. From the Razor 4 (the OG I believe), the Apeks WSX (the Razor copy), and the X-Deep Stealth to the Hollis Katana. And to be honest... I'm completely lost.
Could you do a comparison highlighting pros and cons of the various harnesses and bladders?
Tucking the longhose under your waist band works well for me. No need to hook it on a knife, cannister or hose retainer peg.
Long hose primary donate is the way to go. I've never had anyone too upset when I explain to a buddy that they should take/expect the one from my mouth because it's on a long hose and you know it's ready to go because I was just using it.