Worthington vs. faber lp85

[jxh2297]

I thought I saw a thread on this a while back but searched and could not find it so here is my question. Which tank is better for sidemount? worthington lp85 or faber lp85? I have heard reports that the fabers can get pretty bouyant under 2000psi. It seems the added weight of the worthingtons wouldnt hurt (prob help) when diving dry.

[FW]

I thought I saw a thread on this a while back but searched and could not find it so here is my question. Which tank is better for sidemount? worthington lp85 or faber lp85? I have heard reports that the fabers can get pretty bouyant under 2000psi. It seems the added weight of the worthingtons wouldnt hurt (prob help) when diving dry.

It all depends if you want to carry the needed extra weight as steel (heavier tanks), or lead.

[skip]

You know, I remember that thread and I dive fabers and worthingtons LP85's, and never had noticed a difference. I had to take mine to the quarry and dive them down to 500 psi. The fabers did get light, but not until the last 1,000. Indeed they got so light that I had to add six lbs of weight in order to stay at 10 feet (500 psi). I added the 3lb weights to the cam bands of the tanks. The worthingtons were not an issue at 500psi at 10 feet. I had not had those tanks that low before and had no issues at 1,000 psi. In shallow cave, swimming, it wouldn't be such a problem, and during deco with something to hang on to, it wouldn't be a problem. A nice full deco bottle I think would overcome the weight issue as soon as you picked it up. And normally you would never reach 500 psi diving thirds. "normally"

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[jcook]

Rob Neto (RN) posted a good little article recently on the differences. I can't remember where it was on the forum though.

edit: here is the link - http://chipoladivers.com/2012/04/sidemount-cylinders/

Personally I use Faber LP85's because I don't need all the extra weight of Worthingtons. I have dove both down to ~500 psi and I still didn't need any extra weight with the Fabers, but I wear a very light UW for my trilam drysuit. As Forrest said before, you can't breathe lead.

[Marc Bryan]

I prefer the Fabers as well. I am able to stay submerged easily with 500 psi remaining in the cylinders while in my dry suit with light garments. If I were to be diving in extremely cold environments where I needed much thicker undergarments, I would consider adding a small amount of weight. So I guess it depends, on your most frequent driving environment, and use of undergarments. Also to me, and this may just be purely in my head, I think that the Fabers swim better for some reason, maybe it is how they trim.

[jxh2297]

Thanks for the replies, the only thing that I see about the dangers is if you used them in open water where you get them down to 500, but looks like for cave fabers would work well

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[jxh2297]

And with sidemount I was talking about the butt of the tank riding high and messing up trim with fabers? But again prob wouldn't happen in cave diving

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[Marc Bryan]

Also consider the difference in Fabers. The 3442 series are about 3lbs heavier than the the lp 2640's. The 3442's swing around 8lbs full to empty, while the 2640's swing around 6lbs.

The 3442's are still negative when empty. The 2640's are not.

[Sludge]

The 3442's swing around 8lbs full to empty, while the 2640's swing around 6lbs.

Huh? Air weighs the same regardless of what kind of cylinder it's in.

[Marc Bryan]

Different volume of air based on fill pressure. If you fill them to rated pressure, the swing is different.