Go to a larger tank or not

[tbone1004]

oh, of real importance here as well. If your current HP100 is not a Faber, then you may want to scrounge around and find a used one. Buoyancy characteristics can be wildly different with the X7-100's from Worthington being particularly heavy

 

[Damselfish]

The buoyancy characteristics might be worth considering as well. I don't know about the tanks in question but if you need to change weights or it affects your trim you may find that another nuisance on top of fiddling with the camband each dive. Of course people do acquire collections with a variety of tanks but for now if you just want to have 2 tanks and do a couple dives there's something to be said for keeping it simple.

Probably your gas consumption will improve over time.

 

[Bob DBF]

I would agree that another 100 would serve you well in the long run. I have picked up tanks haphazardly over the years, this has resulted in changing tank sizes a lot on multi dive days. Changing tank bands is mildly annoying, but I may also have to change weights, and of course adjust for the amount of gas carried.


Bob

 

[Akimbo]

Changing tank bands is mildly annoying, but I may also have to change weights, and of course adjust for the amount of gas carried.

And let your computer know what size tank you are using if you use remaining gas functions.

 

[BRT]

It would probably be better to get another tank of the same size thinking about it. The idea of readjusting several things between dives even right now I don't think would have been that bad until my straps develop more of a memory but the idea of in the future being able to go doubles which I am likely to do at some point in time would be nice.

45 minutes? I'd sell the 100 and get 2 117's or larger and have matched sets. The 100, my preference should be worth quite a bit.

 

[StrangeDoc]

I didn't really think about having to use different weights between tank sizes as well, that is a great point.

 

[Bob DBF]

And let your computer know what size tank you are using if you use remaining gas functions.

My computer is too stupid for that and I'm too old.


Bob

 

[Akimbo]

My computer is too stupid for that and I'm too old.

Hmmm, I was just thinking that my computer is too old and I'm too stupid.

I didn't really think about having to use different weights between tank sizes as well, that is a great point.

Sadly, it is easier to change weights than telling some computers what tank size you are using!

 

[2airishuman]

I use 120s, which are 7.25" diameter like your 100, and 72s, which are 6.9". I'm not sure I see having to tighten or loosen the cam bands as a big deal, since I do it all the time and don't find it much more involved that tightening them the way I usually do before each dive.

That said, well, if you want 7.25" diameter cylinders, maybe you should get 120s instead of 117s.

In most cases you will not have to change weights around between 100s, 117s, and 120s, because they are all nearly neutral with some slight variation (as noted) among manufacturers.

 

[Bob DBF]

In most cases you will not have to change weights around between 100s, 117s, and 120s, because they are all nearly neutral with some slight variation (as noted) among manufacturers.

Watch out for some Fabers, that slight variation can be 7 to 10#, depending on the tank. They make a 100 and a 120 that are real horses.

And the difference between Al and neutral steel tanks is worth noting, at least to me.


Bob