HP steel 120 or 130?

[Rainer]

Twin 72s aren't exactly a viable option if you're looking to do TWO dives...

 

[Squid]

I just bought a Knighthawk BC, so I don't think doubles are in my immediate future. To tell you the truth, I still don't understand what the benefit of doubles is over a large single.? You only get so much time at depth, and a large single should cover it, right? Sorry for the stupid questions, but I don't get it. I'm talking about recreational depth limits. I also like the idea of having a totally independent pony system in case of an emergency. I currently have a Worthington HP steel 100, but they also make HP steel 120's and 130's.

 

[markfm]

I'm like Rainer, stick with the 100 but also carry a 19CF pony. The 100 gets me as close to NDL as I want to be, including a clean half depth and safety stop, and the pony is my backup if something hits the fan.

 

[Peter_C]

Doubles give you redundancy. If one valve or reg has an issue, you have a spare. It is like carrying a pony except it is 100cf and comfortably mounted on your back. I run out of NDL before air with my HP 100 as a single too.

 

[Squid]

100 cubic feet seems like overkill for a pony bottle. I was thinking of mounting a small one to my tank upside down so I can reach the valve easily. Or maybe slinging it so I can pass it off if need be.?

 

[skresch]

100 cubic feet seems like overkill for a pony bottle. I was thinking of mounting a small one to my tank upside down so I can reach the valve easily. Or maybe slinging it so I can pass it off if need be.?

He is taking about doubles.

 

[SparticleBrane]

Just going to throw this out there -- doubles aren't always the immediate answer. Personally I feel they're pushed a bit too much on people who probably don't have the experience needed to start diving them. Kind of a "too far too fast" thing...

 

[rickyd]

I did not think PST was making tanks at the moment, therefore 130s and 140s are pretty hard to get in the USA right now. There are probably a fair amount of 120s floating around, though.

Worthington ( XS Scuba ) X8-130s are very easy to find in SoCal.

 

[Hoosier]

A single and double rigs are totally different rigs IMO...

You don't need to learn how to ride a motorcycle to drive a car.

A proper training and instructor are the key factors.

 

[skdvr]

I dive a worthington HP 130 and love it. For deeper dives I like the extra gas and for shallow with friends diving 80's and can get at least 2 dives out of it. They are a bit heavy but really not bad at all. They are shorter than the 120's which I like but they are 8" diameter so if you take them on charter boats it may not fit in their rack. It is just me but I like my 130 and would buy another one.

Phil