Chest-Mount US style…

[Fat old english bloke]

…in other words with a twinset.

My normal config is sidemount, but I tried it today, with a twinset I bought expressly for that purpose. Thought it’d be great….24 litres of dilout on my back, sides largely unencumbered, save for deco bailouts that can just be dropped as appropriate, etc, etc.

Whilst it was ok, I just felt like a f**king tank, a graceless f**king tank.

Henceforth, the twins shall be used as a gas bank.

Oh well.

 

[Mobulai]

Without ever trying CMs in either config I can relate to the tank feeling
I don’t even wanna take up twins for OC, I went straight to SM from single tanks

 

[Fat old english bloke]

Without ever trying CMs in either config I can relate to the tank feeling
I don’t even wanna take up twins for OC, I went straight to SM from single tanks

First time I’d had a twinset on my back since 2018 too.

I was actually surprised by how comfy it felt, aside from the dump valve almost being in my armpit (Evolve). I could even do a valve drill, though the left post was a bit of a battle (too much crash damage).

 

[TheCatFish]

Without ever trying CMs in either config I can relate to the tank feeling
I don’t even wanna take up twins for OC, I went straight to SM from single tanks

same. i've been resistant to sticking twinsets on my tiny spine. (5'5 130lbs). I still wanna try it sometime.

 

[Fat old english bloke]

same. i've been resistant to sticking twinsets on my tiny spine. (5'5 130lbs). I still wanna try it sometime.

I let my daughter try this one, said she could have it if it worked for her.

She is 5’8” and very slim, and it absolutely swamped her.

She liked the improved feeling of lateral stability over her normal single, but was far too negative and found the leg-heavy trim quite uncomfortable. It’s also a bitch for someone of smaller stature to manage out of the water.

The cylinders are concave bottom Euros. She dives a trilam suit, Jet Fins, and was using my Evolve wing.

 

[rx7diver]

I am reading that manifolded LP50's work well over here (USA) as dilout cylinders for baby tech dives using a chest mount CCR. These have dimensions 25" height x 5.5" outer diameter. (Are these equivalent to your double 7 liter cylinders?) You and your daughter might give these much smaller cylinders a try.

rx7diver