Mailing List Archive Mailing List Archive
Don Burke wrote: > From: Marv <ajmarve@ba*.ne*> > >> ok >> first, if you read Pauls post you should have been able to infer that he >> was discussing the weight of the tanks on dry land. > > > The _only_ place that is true is on dry land. um, ok? > For a given gas capacity, a > diver wearing aluminum tanks is a bit heavier on the boat since the > displacement of the aluminum requires wearing more weight. only if you breathe the tanks below approx 1100psi, the point at which they swing positive. > > >> If you ever tried to lift a set of 104s and then right away move a set >> of 80's, like i do when im filling in my garage, you would see the >> difference between the two, > > > That's comparing apples and watermelons. Thats what i was saying, that the tanks were different. So much so that if dry land weight was a consideration, as Paul indicated in his original post, then the 80s "beat" the 104's. i never mentioned steel 80's and esp not hp 80s like the pst. There is no reason to bring them into the discussion in fact because they swim horribly. you guys can talk numbers all you want, try diving the tanks and then tell me about it. > I made up a set of AL 80s and I'm wearing 11# of lead (with a steel plate) > with a wetsuit in fresh water. I haven't hit the ocean with these yet, so > my calculation of 17# is approximate at best. As soon as I go dry, those > tanks will become deco/stage/rec bottles. If I didn't already own the AL > 80s, I certainly wouldn't have bought them. > > Those 104s are a pretty heavy item as steel tanks go. They weigh about the > same as an OMS 125. > > Capt JT wears a set of 104s and more power to him. I haven't asked him what > he like about them. > I have a welder and a generator I can lift when I feel the need for a > hernia. :) > I think I'll go for 112s when I get to that. the 104 is a good choice for cave, where extra buoyancy is a minus. one can manage to dive them in the ocean,but i dont see them as ideal in the ocean. > The wall thickness on an aluminum tank is so much greater than that of a > steel tank, the weight of the tank is more and the displacement is more. and in the water you have the wt of the valve, the gas, the reg to consider, along w/ all you other gear. Marv -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
Navigate by Author:
[Previous]
[Next]
[Author Search Index]
Navigate by Subject:
[Previous]
[Next]
[Subject Search Index]
[Send Reply] [Send Message with New Topic]
[Search Selection] [Mailing List Home] [Home]