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  Topic Review (Newest First)
03-07-2017 06:50 PM
jimmid
Re: DIY - discussion on building a DIY hookah diving compressor

As I said, you can change the spring in a 2nd stage to lower the psi, but the hookah I use is 160 LPM and about 17.5 psi. so I don't want to restrict the flow. When you breathe normally, without holding your breath, you breathe continuously. With the free flow regulator air is coming down the hose at 160 lpm. You breath in and the exhaust valve closes and you fill your lungs. Less than a second later you breathe out and your exhaled breath with the fresh air is exhaled. then you start the process again. Most of the bubbles occur when you exhale, unless you hold your breath, which you shouldn't. I don't feel that restricting the air flow and putting a strain on the little compressor to stop the bubbles for less than a second is worth the extra cost. If you don't like the bubbles, on my regulator the exhaust valve exits in to a box shape that sits under the regulator in front of your chin with openings at each end, so it would be easy to silicon in two 3 inch tubes to divert the exhaust to the side of your face.
03-07-2017 01:15 PM
Fstbttms
Re: DIY - discussion on building a DIY hookah diving compressor

Quote:
Originally Posted by scubadoo View Post
....is it just to match your air supply?
Yes.
03-07-2017 12:56 PM
scubadoo
Re: DIY - discussion on building a DIY hookah diving compressor

First time I've ever looked into hookah reg...is there any advantage to a higher / lower psi? Or is it just to match your air supply?
03-07-2017 10:22 AM
denverd0n
Re: DIY - discussion on building a DIY hookah diving compressor

Yeah, I don't think I want bubbles roiling up around my face constantly. I would rather just spend the money to buy a regulator made for this.
03-07-2017 09:02 AM
Fstbttms
Re: DIY - discussion on building a DIY hookah diving compressor

Breathing on a free-flowing 2nd stage is no fun. For less than $100 you can buy a regulator designed to work in a hookah. But if saving a couple of bucks is that important to you...
03-07-2017 06:54 AM
jimmid
Re: DIY - discussion on building a DIY hookah diving compressor

There is a valve and a spring on the air inlet with a lever that operates the valve when you push on the purge button. When you breathe in the diaphragm pushes on the lever and opens the valve. Some people say you can replace the spring with a softer spring or cut the spring down but the easiest thing to do is remove the valve completely. It then becomes a free flow air delivery. I did this with this cheap Chinese octopus regulator. It is perfectly safe if you follow the three rules mentioned. It also pays to attach the hookah air line to a belt or harness with the regulator hose going over your shoulder so the hose doesn't pull on the regulator.
03-06-2017 10:31 AM
Fstbttms
Re: DIY - discussion on building a DIY hookah diving compressor

Quote:
Originally Posted by denverd0n View Post
How exactly do you modify a 2nd stage for hookah use?
I have never known anybody to do this. Not sure why you would.



XS Scuba Hookah 2nd Stage RG3 with reviews at scuba.com
03-06-2017 09:30 AM
denverd0n
Re: DIY - discussion on building a DIY hookah diving compressor

Quote:
Originally Posted by jimmid View Post
It is easy to modify a 2nd stage regulator...
I have heard this, but I have never seen anyone post step-by-step instructions on how to do it. So how about some details? How exactly do you modify a 2nd stage for hookah use?
03-05-2017 08:30 AM
mrjo
Re: DIY - discussion on building a DIY hookah diving compressor

Kudos to 2Gringos,

I think the only time in the whole thread someone has stated how to avoid killing yourself rather than the standard go and do a dive course response.

So 3 rules to live by, sounds pretty simple to me.

1) Don't hold your breath
2) Do not pass your bubbles on the way up
3) DO NOT PANIC under any circumstances!!

The only fail there Gringos was the don't build your own mindset.

As for personal safety, we all jump in cars everyday, almost without a thought of the dangers, and they kill very effectively here in OZ 1600 a year appx plus 30000 serious injuries..

So I don't see a DIY Hookah setup being a big risk if you think it through and use the right kind of pump and hose. Then practice a bit just under the surface and move down in 2 foot stages and practice resurfacing a few times at each level to gain some confidence and establish a breathing routine.

Now rather than bagging this post why not take the time to ad anything else that may save those who brave the wild west of home style hookah's and self reliance, Rule #4???

I will be building the cheapo version of oil less diaphragm pump with hose into snorkel with purge valve, if the constant bubbles annoy or if the pump dies due to 100% duty cycle then may upgrade to regulator, tank and pressure switch setup.

Jo
.
03-04-2017 05:04 PM
jimmid
Re: DIY - discussion on building a DIY hookah diving compressor

I have built and used a hookah from a BOYU acq-910 12v compressor and it works perfectly. It is easy to modify a 2nd stage regulator to work with it or buy a hookah regulator, or even use a snorkel with purge valve. For shallow water diving it is fine, and have had no problems cleaning hull and keel 2 mtrs + down.
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