Back Mount Pony Questions

[Gone for diving]

That's true... that's sorta why I say get an aluminum 40cu. Right from the start...
That gives you 140 cu ft...

I know some guys are filling those lp50s to 3600psi... which is about 133 cuft in doubles .

That's why I like my double 72s not terribly heavy... and with a 40cu I have good options...

 

[84CJ7]

Honestly I am kinda wishing I had just bought the 6, people say its not enough but I would actually carry it. The 19 has been obnoxious enough to sort out that it almost always gets left ashore. Even a spare air is the best if you will actually have it with you when you need it.
I would never carry a 30 or 40, I only did the 19 over the 13 because of the similar length and identical diameter.

 

[Rob9876]

Honestly I am kinda wishing I had just bought the 6, people say its not enough but I would actually carry it. The 19 has been obnoxious enough to sort out that it almost always gets left ashore. Even a spare air is the best if you will actually have it with you when you need it.
I would never carry a 30 or 40, I only did the 19 over the 13 because of the similar length and identical diameter.

I recently started back mounting a 19cf with an XS scuba pony bag: https://www.amazon.com/dp/B004NX4CC...olid=2X5S92VYFMMYS&psc=1&ref_=lv_ov_lig_dp_it

Pretty simple way to mount a pony, low-cost, and the mount is very low weight. I mount the pony tank on my left side of the tank and leave my left back trim pocket empty, and put a 3 pounder in my right back trim pocket, and seems pretty darn even to me. YMMV. I'm thinking of also getting a 13cf tank and mounting it the same way for travel -- I know the dimensions aren't that different from a 19cf, but it is about 2 lbs. lighter, and every ounce counts for air travel.

 

[happy-diver]

I know some guys are filling those lp50s to 3600psi... which is about 133 cuft in doubles .

The same physical sized Faber tanks come rated at 3364.88psi in Australia

 

[SubseaSports]

Older thread, but I'm gonna send it anyway.

I use the Trident Quick Draw Pony Mount, tank inverted, charged and off.
HP117 with a 13. No gauge. I had so many problems with the button gauges, I just eliminated it. Of course a cursory pre dive psi check is in order.

This setup is ideal for me while spearing. If I am planning on site seeing only, I sling it.
I did change out the SS rings on the pins to mono line with crimps. The cable on the mfg's walked out of the rings. This only issue I encountered. Very sturdy setup.

 

[happy-diver]

That's why I use this slide in double channel mount only two pieces solid stainless that's it zero issues

Shown here on a chestmount rebreather sack on a table next to the washing machine I built it on

 

[Cthippo]

With the shark system do you have to remove your poly when you replace the main bottle? If not, what does it attach to?

 

[hedonist222]

Yes but only because the shark system secures itself to your primary tank in two ways:

A J hook that loops around your primary tank valve
A cam band with buckle at bottom

To change primary tanks, you undo flip open the cam band buckle and then simply lift off the pony tank.

 

[NW Dive Dawg]

I dive a 19cf Pony on the right side. Fully valve on and charged. Small 2in SPG tethered so that I can easily check pressure pre-dive and anytime during a dive. Currently still using my good old Pony Tamer mount but considering swapping to the Trident Quick Draw. In the rear trim pockets of my wing BC I keep the right side empty and 3lbs on the left to balance out the offset.