Most desirable Scubapro 2nd stage?

[stuartv]

Why isn't it in production?

 

[rhwestfall]

Too costly for parts....

 

[stuartv]

There's one on eBay right now.

Looks funky. Guess I'll have to do some more googling to understand it better.

 

[rhwestfall]

Servo..... first of its kind

 

[halocline]

That one's original, I have two converted ones as well. They all are pretty nice breathing regulators.

 

[halocline]

There's one on eBay right now.

Looks funky. Guess I'll have to do some more googling to understand it better.

There's a decent thread on them:
Scubapro Pilot

 

[halocline]

Why isn't it in production?

Why don't you ask your teacher that question the next time you take a SP regulator service class? I'd like to hear his answer.

This regulator was designed for extreme deep diving and in many ways is truly over-engineered. It's quite ingenious but there are lots of little finicky parts. The gist of the design is that air pressure provides an assist for opening the main valve in a very clever way. Also, the orientation of the diaphragm/exhaust valve minimizes case fault geometry. Once you get these things adjusted correctly, they are super stable in the water.

The converted pilots basically replace the finicky pilot valve with a center-balanced valve that eventually became the D400. There is VERY little drop-off in performance in return for a big increase in simplicity and ease-of-service. I've been using the converted pilot as my open water primary 2nd stage for a few years now and I love it.

 

[buddhasummer]

Battle scars on a metal second stage give it character. Battle scars on a plastic second stage just make it uglier.

But you can clean up plastic face plates quite nicely with micro mesh. I've done a few and they look almost new again, until the next couple of dives that is...

 

[Couv]

IMG_0504

• halocline
• Jun 19, 2016

I'll see your beautiful and flashy 109, and raise you a unique BA with satin finish, perforated cover, and G250 sized exhaust valve.

 

[rhwestfall]

I need a cigarette.... (we are past cold shower territory)