Ambient Pressure Diving Inspiration Vision and Classic Teardown

[Bythesea]

Maybe do a "how to do" loop hose connections,

Simple answer.... Don't, they are a nightmare to put back together....

 

[matt]

Simple answer.... Don't, they are a nightmare to put back together....

Assume you have mk1 (threads) - do you have the tool BTS? With the tool it's OK with 2 exceptions - first you must have 3 hands (or hold the hose between your knees and second the hose needs to be cold.

The only other gotcha is is you refit the threads either too high or upside down - then getting the collar on is really hard (the threads splay out as it over-nips).

I did this once to clean the grooves in the stopper which were very dirty indeed after 5 years.

Matt.

 

[Bythesea]

Assume you have mk1 (threads) - do you have the tool BTS? .

I have the tool, I did, when I first got the box, remove on of the hose fittings, I vowed never again 1. there is no need 2. they are an absolute bugger to get back on, an hour of my life that could have been better spent...

 

[matt]

I have the tool, I did, when I first got the box, remove on of the hose fittings, I vowed never again 1. there is no need 2. they are an absolute bugger to get back on, an hour of my life that could have been better spent...

I guess that's why they went for cable-tyes, lol.

 

[erikradstrom]

Simple answer.... Don't, they are a nightmare to put back together....

I know! That's why I changed all mine after taking them apparat now I had one that took me almost an hour to get off!

Then I put one back together just to take the pictures :wiggle:

 

[cedrics]

Thanks a lot for the great post!

Very nice for those of us diving remotely and being far from the main support bases...

 

[Suprabones]

Great step by step tear down of the units.

I have a question though: Would you know the name of the thread that is used to attach the handsets and buzzer on the classic electronics?

Thanks.

Sent from my SCH-I510 using Tapatalk 2

 

[matt]

Great step by step tear down of the units.

I have a question though: Would you know the name of the thread that is used to attach the handsets and buzzer on the classic electronics?

Thanks.

Sent from my SCH-I510 using Tapatalk 2

If you mean the thread-size for the nuts on the lid then no, you'd have to ask the factory.

I've serviced the Mk1 solenoid a couple of times but other than that I've never removed the lid nuts.

Matt.

 

[Suprabones]

If you mean the thread-size for the nuts on the lid then no, you'd have to ask the factory.

I've serviced the Mk1 solenoid a couple of times but other than that I've never removed the lid nuts.

Matt.

maybe we are talking the same part. But just to clarify. I'm taking about the thread size on the end of the hoses that are attached to the handsets and buzzer.

Thanks!

-Matt

Sent from my SCH-I510 using Tapatalk 2

 

[matt]

maybe we are talking the same part. But just to clarify. I'm taking about the thread size on the end of the hoses that are attached to the handsets and buzzer.

Thanks!

-Matt

Sent from my SCH-I510 using Tapatalk 2

Which end?

Doesn't matter as I don't know the answer for either end

Sorry!

 

[Suprabones]

Which end?

Doesn't matter as I don't know the answer for either end

Sorry!

the end that connects to the head.

Sent from my SCH-I510 using Tapatalk 2

 

[trimixman]

well done and thanks so much!!

would you mind i translate this document to CHINESE and post to local diving community in TAIWAN...?

bruce

Please feel free to give feedback on this potential article wot I wrote for Clare/CCRX.

I'm pretty sure it's error free, but you never know ;-)

I've kept the pictures highish res and few in number - there are omissions, which I can fill by request.

Matt.

 

[matt]

well done and thanks so much!!

would you mind i translate this document to CHINESE and post to local diving community in TAIWAN...?

bruce

Sounds OK to me Bruce, post me a link back to this thread so we can share it from here too.

Cheers
Matt.

 

[trimixman]

Hi matt:
chinese verison post in this chinese diving forum:

ezdivemag.com/forum/detail.asp?main_id=3012

thanks for your kindly shareing

cheer

bruce from TAIWAN

Sounds OK to me Bruce, post me a link back to this thread so we can share it from here too.

Cheers
Matt.

 

[matt]

Hi matt:
chinese verison post in this chinese diving forum:

ezdivemag.com/forum/detail.asp?main_id=3012

thanks for your kindly shareing

cheer

bruce from TAIWAN

 

[matt]

Not a big fan of the newer style Evo/Inspo case, the type where inhale hose comes out of case behind your neck. Not sure why they moved away from the older case design where hoses came out near your shoulder blades!

I found my head had to push the hoses apart, found it slightly annoying. To solve this I use a couple of Velcro straps (came with cheaper strobes) to attach to LP hoses. This pulls hoses into a better position & creates a space for my head.

I'd guess it was a WOB improvement, I found the same at first but now I'm used to it. Actually, to me, the unit feels more streamlined without the hump.

Matt.

 

[gallathan]

Nice article Matt

Very well illustrated ;-)

 

[matt]

Thanks to Tanel I've been able to make a new addition to the article. Here it is for review...

Comments?

Matt.


Counterlungs

Since 2012 both Over-The-Shoulder counterlungs (OTS) and Back Mounted Counterlungs (BMC) have been available. Both types of counterlung share many of the same features. Both types are intended to be permanently fitted to the unit and are not removable as supplied (without dismantling). When wearing the unit the left-hand counterlung is the inhale side and the right-hand one the exhale. Both counterlungs have a Manual Addition Valve (MAV) fed from the on-board cylinders - diluent on the left and oxygen on the right (although oxygen MAV is optional on the BMC). The left-hand counterlung has the Automatic-Diluent-Valve (ADV) if fitted (at extra cost, and optional flow-stop). The ADV is also fed by the in-board diluent. The right-hand counterlung has an Over Pressure Valve (OPV) that can be screwed down for positive pressure testing prior to the dive and unscrewed to the low pressure setting for use during the dive (the Inhale on the BMC also has an OPV). The threads on the T-pieces are different preventing accidental reversed-gas-flow.

Over-The-Shoulder Counterlungs (OTS)

The OTS design with easily reachable MAVs makes the unit very tolerant to flooding and easy to breathe in all positions.

The OTS counterlungs are available in 2 sizes (5.7L or 7L per counterlung). The smaller counterlungs are Medium and the larger 7L lungs can be fitted as either Large or eXtra Large (they are the same counterlungs but are fitted higher so that the counterlungs are lower when fitted). Although larger than strictly required for breathing they do allow easy access to MAVs and OPV, which doubles as a manual exhaust.

The OTS counterlungs are designed to be used with the regular harness.

Back Mounted Counterlungs (BMC)

Since release in 2012 the BMC are available as either a standard fit with a new unit or as an upgrade to an existing unit. The primary difference with these lungs is that they offer a clutter-free chest area with the lung mounted at the rear. Other than the fitment the operation (gas flow etc.) is unchanged and as above.

The BMC consists of 5 main components:

• the counterlung
• an integrated harness
• diluent inflator and hose (remote manual add valve)
• oxygen inflators and hose (remote manual add valve)
• the ADV (as before)

The counterlung (2 colour options: yellow or grey) is offered in 1 size only but with two attachment points (high and low) allowing adjustment to cater for different body lengths to ensure the BMC sits in the optimum position on the shoulders.

The Harness is offered in 4 waist sizes which correspond to the existing harness sizes. So if you currently have a large harness, you will fit a large in the new harness etc. The exception to this is the current small and current medium are both the same size on the waist and therefore have been combined into the new medium harness.

As designed the BMC and the harness work as a pair to accommodate the unique new shoulder strap design in which the strap is integral with the lung and ensures that the counterlung is fixed in the ideal position on the shoulder for optimum breathing performance.

Unlike the over-the-shoulder counterlungs each back mounted counterlung (both inhale and exhale) has an over-pressure-valve (OPV). Both valves allow manual gas dumping, water drainage and feature dual settings for loop test and dive modes.

The Manual Inflators are offered with 3 hose length options (70cm, 76cm and 84cm) on the hose that returns gas from the inflator block to the counterlung. These lengths match up with existing low pressure inflator hoses that feed gas from the diluent manifold and the length varies by rebreather model and the size of your over-the-shoulder counterlung (so is important if ordering an upgrade).

When supplied as an upgrade the counterlungs and harness are supplied as a pair with standard T-pieces and the MAV's blanked off. When supplied with a new unit the diluent inflator and hose are included and the oxygen inflator and hose plus the ADV remain a cost option.

There is also an optional 50mm webbing crotch-strap now available.

 

[Clare]

I can't comment on specifics - but thanks for taking the time. When you are happy we'll shove it in the article.

 

[matt]

Thanks to Paolo Bagordo I've been able to include a new picture showing OTS and BMC side-by-side (and lucky both divers are wearing a red suit!).

I've updated post #58 with this change - any comments?

Matt.