Technical Diving Equipment

[rongoodman]

BM--Halcyon SS plate and 40# Evolve or 30# Eclipse wings
SM--Stealth 2 harness and wing
RB--Prism 2 with Hollis SS plate, Dive Rite wing, and Golem Gear SM kit

Mostly Hog regs, Liquivision and Shearwater computers, Light Monkey primary lights

 

[corvettejoe]

It just depends what you want to do, there's all kind of "technical diving"... deep, wreck penetration, cave, etc. What exactly are you interested in, or what style of diving do you want to do (Backmount doubles, sidemount, etc?). Knowing THAT will give you better answers from everyone.

My setups:
BM: HOG BP/Wing
SM: Hollis SMS100D
simple fun stuff: home made harness, no BC "Monkey Rig"

Regs are all HOG, multiple sets for BM, SM, Stage/Deco bottles, etc.
Shearwater Petrel computer, HOG 21W HID primary light (light monkey made), intova backups, random reels and spools.
Mask/fins are the same $25/ea pair I've worn since OW that I dive full cave with.. nothing special, they work for me.

 

[mathauck0814]

rEvo III mini mCCR (Apeks regulators/deep outdoors wing), deep outdoors custom drysuit, fourth element arctic undergarments, hollis F1 fins, light monkey 21W LED canister, Halcyon scout backup lights, Halcyon titanium cutting tool, Trilobite z-knife, HOG bailout regulators, shearwater computers (hardwired Predator for PPO2 monitoring, standalone Petrel for fixed setpoint back-up), dive x-tras Cuda 400

I have a ton of open circuit stuff sitting in a box in my closet that never gets used. Looks very similar to Jim's setup.

 

[Curtis Dawson]

So what are the advantages of double tanks versus a 133cf or 140cf single HP steel tank?

 

[mathauck0814]

So what are the advantages of double tanks versus a 133cf or 140cf single HP steel tank?

Often 130 or 140 is not enough cuft for a dive. For some dives, double 130's are normal. Additionally, twinsets give you redundancy. If you are beneath a virtual ceiling (you have deco stops above you that you cannot omit) and cannot surface, have only one tank, and that tank suffers a failure at the first stage, burst disk, or tank o-ring, you now have lost 100% of your gas and have no safe options to complete your decompression. With a twinset you have another supply of gas and plan your dive to ensure that your reserve has enough remaining to get you safely back to your exit after completing all decompression stops, in the worst case scenario.

 

[ktomlinson]

So what are the advantages of double tanks versus a 133cf or 140cf single HP steel tank?

When I need them I dive my double 108's. Filled to 3600psi these carry around 330cuft of gas and offer redundancy that the single tank doesn't. The big negatives with doubles ate that they increase your drag in water and they are heavy to move around on land. I use doubles when I need doubles, when I dive recreational type dives I use a single hp100.

 

[PfcAJ]

330cuft? I did a lil napkin math and I'm not sure that checks out. LP120s filled to 3600 only give about 325, and they're significantly bigger than 108s.

 

[ktomlinson]

330cuft? I did a lil napkin math and I'm not sure that checks out. LP120s filled to 3600 only give about 325, and they're significantly bigger than 108s.

You are correct, it is only 305cuft. I had quickly figured them as full at 2400psi, but really they aren't 112cuft tanks until they are 2640psi.

 

[ianr33]

So what are the advantages of double tanks versus a 133cf or 140cf single HP steel tank?

More likely to live.

 

[istvan31]

hi guys, I'm looking for oms sidemount back mounted for sale, anyone?