Servicing Poseidon Regs

[ScoobieDooo]

In Vance Harlow's "Scuba Regulator Maintenance & Repair" book he refers to Poseidon's are being 'fussy' to tune and service.

However, after having my Poseidon 'guts' out of the Jetstream's 2nd stage I see nothing complicated about the parts. Seems quite simple and straightforward to me and appears to only have one adjustment - the distance of the servo valve from the diaphragm.

There are not many small pieces to the 2nd stage, so why all the 'fuss' over the home do-it-yourself person?

This seems as about as straightforward as a single adjustment 2nd from what I see.

Am I missing something?

 

[LUBOLD8431]

Ya, scoobie, you're missing alot. You are a few sanwiches short of a picnic. A few cards missing from the deck. Lost without a clue...


Just kidding...

They really are that simple... Most people can't service anything though...

Good Luck.

 

[jonnythan]

ScoobieDooo once bubbled...
In Vance Harlow's "Scuba Regulator Maintenance & Repair" book he refers to Poseidon's are being 'fussy' to tune and service.

However, after having my Poseidon 'guts' out of the Jetstream's 2nd stage I see nothing complicated about the parts. Seems quite simple and straightforward to me and appears to only have one adjustment - the distance of the servo valve from the diaphragm.

There are not many small pieces to the 2nd stage, so why all the 'fuss' over the home do-it-yourself person?

This seems as about as straightforward as a single adjustment 2nd from what I see.

Am I missing something?

I dunno, I've never taken one apart. But my AOW instructor... hm.

We did some pool training dives for search and recovery. He was hyping up his Odin setup, and we tried it out. Breathed pretty hard, so he decided to "tune" it.

He spent about 20 minutes with a couple of small screwdriver looking tools and several small parts on the side of the pool before he gave up and said he'd fix it later for us to try.

I wasn't impressed

 

[LUBOLD8431]

jonnythan once bubbled...

Breathed pretty hard, so he decided to "tune" it.

He spent about 20 minutes with a couple of small screwdriver looking tools and several small parts on the side of the pool before he gave up and said he'd fix it later for us to try.

He didnt know what the he## he was doing.

 

[jonnythan]

LUBOLD8431 once bubbled...


He didnt know what the he## he was doing.

That's entirely possible

But then again, he needed that special little tool which is a little annoying.

 

[ScoobieDooo]

Jonnythan,
I wonder what 'special tool' that was? All you need for the Jetstream/Odin to adjust the lever height is a small hex wrench and a pair of small needle nose or extra long nose pliers - I think - unless he was taking the entire assby apart, housing, valve tube and all.

???

Most owners of Poseidons will tell ya that they get BETTER as you get deeper. I can't verify that as I have not dove mine deep yet. LUBOLD843 could verify that better than I can....

Most 2nd stages require TWO adjustments to be made when tuning/servicing them (except for some Mares single adjustment 2nds) - lever height AND cracking pressure. One requires the crown oriface and the other the demand lever height. I don't see what with the Poseidon. Spring tension of the servo valve is pre-determined by the spring tension and is not adjustable. So all one has to adjust (correct me if I am wrong LUBOLD8431) is the distance (in mm) of the servo valve tip from the diaphragm. I think its about 2mm according to the service manual from Poseidon, or about 20-40mm of cracking pressure on a gauge of VP.

Jonnythan - I hate to tell ya but many times a inline adjuster tool is kinda necessary when doing even SP's and Apeks.' Thats a 'special tool.' Sure, one can do it with just a small screwdriver, but you'd have the LP hose on and off many times to do so! Some SP's require 'special tools' to service them, wrenches, etc as well. Apeks' technically require a special pin spanner or cover tool to open the cover of the 2nd stage AND spanner wrenches for the 1st stage. SP pistons require a bullet tool to set the O-ring in the 1st stage as well as special wrenches, etc. So EACH reg has it own requirements on tools, etc.

 

[Bob3]

I can't imagine a more simple design than a Cyklon, the darn things can almost be adjusted just by sticking your tongue in & spinning the little barrel part.
2nd stage kits are composed of a couple o-rings, a little rubber plate, and a zip tie.

 

[ScoobieDooo]

Bob3,
What about the Jetstreams?

Any tips or tricks you can share?

 

[Bloop]

Bob3 once bubbled...
I can't imagine a more simple design than a Cyklon, the darn things can almost be adjusted just by sticking your tongue in & spinning the little barrel part.
2nd stage kits are composed of a couple o-rings, a little rubber plate, and a zip tie.

Is the Poseidon Cyklon an old model? How are the testimonials to this regulator?

Reason I asked this is I was offered a Cyklon set for less than US$350.00.

I am quite new to Poseidon and no next to nothing about them except they are considered the Mercedes in diving.

Any info is greatly appreciated.