doubles, E7-100 or E8-130?

[lamont]

So unless you want long deco stops, you should take a Deco / adv Nitrox class, and in addition to getting certified for greater than 40% O2 you will get trained in how to deal with all the tech issues.

I mentioned Tech I back in my first post.

I wouldn't consider 30 min of deco a "soft overhead". If you just "arbitrarily" head up and do a drifting deco you could end up miles from the boat.

That might be a bad word to use, but it is "softer" than 1000 ft back in a cave. Obviously you can get yourself into a situation in the open ocean where you're equivalently far away from your upline and you *must* find it, at which point you might as well have rocks overhead. I'm not considering those kinds of dives though...

 

[Jim Baldwin]

When I did my tech training several years ago I went with a set of PST HP 120's.
I had plenty of gas but they were just a pain to carry. I finally got a dolly with a set of big wheels. I have a set of PST 100's that I am going to convert to doubles. They're shorter, lighter and I have found that I always have plenty of gas to spare with the 120's. I'm 6 foot, 175 lbs and in reasonably good shape I think the lighter tanks would just diving more enjoyable.

Jim

 

[boomx5]

Lamont,

For Tech1 dives you don't need 130's. The 100's will work just fine and I know people who use 80's for dives in the Tech1 range. Personally, I use PST 95's and and my buddy uses the 100's and there is more than enough gas. When you take Tech1 all the gas planning and figures will be given and explained and it will make sense to you. Now, if you are just trying to save money, then by all means just double up the 130's...that's what I would do, but it's really a lot of tank for the Tech1 range.

 

[babar]

How come nobody mentions the 119's?. I've liked those the most so far.

babar

 

[TwoTanks]

The point I was trying to make is that you should take a class first with some rental tanks and then you will have a much better idea what you really want. It was a lot different than I thought it would be and I had done a lot of research before I took any classes.

TT

 

[novadiver]

I mentioned Tech I back in my first post.



That might be a bad word to use, but it is "softer" than 1000 ft back in a cave. Obviously you can get yourself into a situation in the open ocean where you're equivalently far away from your upline and you *must* find it, at which point you might as well have rocks overhead. I'm not considering those kinds of dives though...

If this should happen, shoot your bag and drift. Cavers don't have that option

 

[diverbrian]

Right now, my doubles rig with everything on it is about 130 lbs (last that I checked). I have made the mistake of forgetting about the stage that I clipped in the water at times. D'Oh!!! Those doubles are Genesis HP 100's as that is what was in the shop at the time.

The tanks that I have on order and will be using for my deeper dives on my Normoxic Tri-Mix class are PST E8-130's. I can't wait to get those puppies in. Now I just need that furniture dolly to move them more easily on land.

 

[Tavi]

My Doubles are E-8 130's. The rest of the team has 119's. my air consumption is higher so this works out well. The team are getting double 85's for a second set of doubles. I'm getting E-7 100's.

Brian has the right idea, I have a dolly for wheeling them long distances.

BUT, sometimes you gotta carry them just to show that you can!!
When there are women carrying their Doubles down the dock, you don't want to be the guy that's wheeling his!! :11:

The 100's may be easier for getting used to them.