Adjusting Cyclon Regs

gdenehy wrote:
>
> Excellent advice, and am not intending to do anything myself that I
> dont fully understand, if at all.
> I am more interested in understanding how my regs work than in really
> doing anything.
> I would like a very good understanding of what is happenng, so that I
> can work with my tech. Also I am working towards being a cave diver,
> at which point I REALLY want to know my regs inside out, so now is a
> good time to start getting a feel for them.
>
> I believe I understand the cracking adjustment, I just dont understand
> what changes how much air is delivered once it has cracked. I suppose
> you would call this inhalation effort?
>

There is a sleeve around the valve tube that directs the flow of air.
Proper adjustment of that sleeve in imperative for easy breathing with
no freeflow.

Just my $.02
--

Ray Contreras
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Webmonkey for:
http://www.ossystems.com
http://www.bobs-garage.com
http://www.clanwolverine.org
http://www.rayzplace.com

gdenehy wrote:
>
> Excellent advice, and am not intending to do anything myself that I
> dont fully understand, if at all.
> I am more interested in understanding how my regs work than in really
> doing anything.
> I would like a very good understanding of what is happenng, so that I
> can work with my tech. Also I am working towards being a cave diver,
> at which point I REALLY want to know my regs inside out, so now is a
> good time to start getting a feel for them.
>
> I believe I understand the cracking adjustment, I just dont understand
> what changes how much air is delivered once it has cracked. I suppose
> you would call this inhalation effort?
>

There is a sleeve around the valve tube that directs the flow of air.
Proper adjustment of that sleeve in imperative for easy breathing with
no freeflow.

Just my $.02
--

Ray Contreras
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Webmonkey for:
http://www.ossystems.com
http://www.bobs-garage.com
http://www.clanwolverine.org
http://www.rayzplace.com

> There is a sleeve around the valve tube that directs the flow of air.
> Proper adjustment of that sleeve in imperative for easy breathing with
> no freeflow.

The sleeve has been adjusted till it just prevents continous free-flow
after the purge button is released, which is what I understand the
correct setting to be.

At very low air flow when breathing very gently (as I do mostly), the
venturi effect would surely be quite small.

> There is a sleeve around the valve tube that directs the flow of air.
> Proper adjustment of that sleeve in imperative for easy breathing with
> no freeflow.

The sleeve has been adjusted till it just prevents continous free-flow
after the purge button is released, which is what I understand the
correct setting to be.

At very low air flow when breathing very gently (as I do mostly), the
venturi effect would surely be quite small.

Hi,

I was reading a post on the newsgroups about the cyclone second stages.

It said that the venturi tube adjustment is critical. I have been
fiddling with mine thinking it wasn't!

Are you able to tell me how to adjust it to its correct setting?

Also, another thing you may be able to advise on - when I breathe
gently, there is not a lot of air coming out. I have to suck a lot
harder than I like. I used to adjust the nut that changed the spring
tension or lever height on my scubapro 190's and could make them
breathe just the way I like them. Is there a way to do the same thing
on these regs, or do you need to change the spring or something, or
just up the IP?

These are new regs. The guy I bought them off has only just been
factory trained, and is not the best source of info. I am also
interested in knowing how it all works anyway.

Thanks a million for your help





Cheers,

Greg

greg@thedenehys.com wrote:
> Hi,
>
> I was reading a post on the newsgroups about the cyclone second stages.
>
> It said that the venturi tube adjustment is critical. I have been
> fiddling with mine thinking it wasn't!
>
> Are you able to tell me how to adjust it to its correct setting?
>
> Also, another thing you may be able to advise on - when I breathe
> gently, there is not a lot of air coming out. I have to suck a lot
> harder than I like. I used to adjust the nut that changed the spring
> tension or lever height on my scubapro 190's and could make them
> breathe just the way I like them. Is there a way to do the same thing
> on these regs, or do you need to change the spring or something, or
> just up the IP?
>
> These are new regs. The guy I bought them off has only just been
> factory trained, and is not the best source of info. I am also
> interested in knowing how it all works anyway.
>
> Thanks a million for your help
>
>
>
>
>
> Cheers,
>
> Greg
>

These things will breathe like a dream if adjusted properly. And doing
it right on these beauties is not rocket science (although some service
"techs" can't seem to get it right).

Take off the hockey puck and the body from the hose. If you hold it
with the hose end down, the operating lever should come pretty much to
the edge of the housing. If not there, it is adjusted wrong. Adjust as
necessary. Then, when assembled, put air to it and purge. If it free
flows, the deflector needs adjustment. The deflector inside should be
turned as close to the mouth tube as possible but just until it doesn't
free flow any more. If it points at the mouthpiece, it will free flow.
If it points into the body, it will create a back pressure and make it
a hard breather.

If you get a slow constant hiss after all this, you most likely have a
shot seat or cone in which case some polishing or parts replacement is
called for.

Easy!

Just my $.02

--

Ray Contreras
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Webmonkey for:
http://www.ossystems.com
http://www.bobs-garage.com
http://www.clanwolverine.org
http://www.rayzplace.com

By the way, they crack very well, with just a tiny bit of pressure.

gdenehy wrote:
> My levers are a little higher than the body (maybe 2mm)
> Will this cause less air to flow when I am only sucking gently?
>

Just the opposite. The higher the lever is out of the body the more
likely it'll free flow. If you add pressure to the system you'll see it
drop a mm or 2. The IP is best set at about 170 psi too. If you get a
freeflow and holding your fingers over the mouthpiece doesn't stop it,
shut the tank off, DON'T try to move the lever with your finger to shut
it down, this will bend (could break) the linkage.

gdenehy wrote:

> Seems as easy to adjust as I would have thought.
>
> 2 questions tho - whats the 'hockey puck'? The nut that holds the guts
> into the reg body?
>
> Most importantly, how do you adjust the lever arm? I cannot see any
> way to adjust it.
>

Hmmmm ... no offense intended, but maybe you better take or send it to a
shop that knows what they are doing. I'd hate to hear of you hurting
yourself because you couldn't work on the regulator right.
--

Ray Contreras
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Webmonkey for:
http://www.ossystems.com
http://www.bobs-garage.com
http://www.clanwolverine.org
http://www.rayzplace.com

RayC wrote:
> gdenehy wrote:
>
>> Seems as easy to adjust as I would have thought.
>>
>> 2 questions tho - whats the 'hockey puck'? The nut that holds the guts
>> into the reg body?
>>
>> Most importantly, how do you adjust the lever arm? I cannot see any
>> way to adjust it.
>>
>
> Hmmmm ... no offense intended, but maybe you better take or send it to a
> shop that knows what they are doing. I'd hate to hear of you hurting
> yourself because you couldn't work on the regulator right.

Great advise.