Which Doubles?

[camerons]

Do you boat dive or shore dive? The quintessential doubles are 130s, but they can be a bear on a boat and aren't necessary for lighter tech dives. In that case 100s would be excellent. As for HP vs LP, unless you live in cave country and can reliably get overfills on the LPs, you're better served with HPs. More gas for the same size and weight. That puts you into Worthington X7-100 or X8-130 territory. Hot dip galvanize, high pressure, great tanks.

Thanks for the info teknitroxdiver. I would be doing a mix of boat diving and shore diving. Are these the tanks you are talking about?

XS Scuba X Series High Pressure Twin Cylinder / Tank Package - 300 DIN Valve Tx-300 with reviews at scuba.com

the total price for this package would be 1104 dollars. is this a decent price? Thanks, Cameron.

 

[rhwestfall]

Get Top Quality Dive Tanks and Dive Cylinders - Dive Right In Scuba

Doubles Packages for Cylinders - Dive Gear Express

 

[teknitroxdiver]

Thanks for the info teknitroxdiver. I would be doing a mix of boat diving and shore diving. Are these the tanks you are talking about?

XS Scuba X Series High Pressure Twin Cylinder / Tank Package - 300 DIN Valve Tx-300 with reviews at scuba.com

the total price for this package would be 1104 dollars. is this a decent price? Thanks, Cameron.

Those are the ones. That price is fair and in line with all the other retailers. Keep in mind you can save 40-60% if you can find a set used. As long as they've been taken care of tanks don't really wear out.

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[KD8NPB]

120 or 130cf tanks are kinda big. Most divers only dive 2x100, so your extra 40-60cf is simply a safety margin that will be unused.

I went with double Asahi HP100s since they were on sale. I wish I went with Worthington LP108s instead... Asahis do not double up very well.

 

[teknitroxdiver]

120 or 130cf tanks are kinda big. Most divers only dive 2x100, so your extra 40-60cf is simply a safety margin that will be unused.

I went with double Asahi HP100s since they were on sale. I wish I went with Worthington LP108s instead... Asahis do not double up very well.

That LP108 will actually be taller and marginally heavier than an HP 130.

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[KD8NPB]

That LP108 will actually be taller and marginally heavier than an HP 130.

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Correct. Easier to PP blend in to though.

I should also remark that I only boat dive with double 100s.

The only doubles I feel comfortable shore diving are my LP72s. I'm only 5'8, 158 lb though.

 

[decompression]

Another suggestion is to cut some dive profiles on V planner or ideco.....and see your cu ft requirements. That and rock bottom calc will give you a good idea for tank size. That said, HP 100's are a great all around set.


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[Aqua-Andy]

The X7-100's seam to be the sweet spot for doubles. The 130"s are monsters to lug around. Weighted down with a set of 100's an 80cf stage and a 40cf deco bottle I'm about maxed out with the weight I can carry up a rocking boat ladder. Call me a wimp but I like my 100's and would not wan't to carry any more weight. I don't think you will have any issues getting 3442 psi fills these days, 15 years ago maybe but not today.