PerroneFord
Contributor
LOL!!!
Any wonder why I am apprehensive about diving with you! Wanna dive a U-Boat?
Any wonder why I am apprehensive about diving with you! Wanna dive a U-Boat?
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Yeah, let's get wrecked. I'll even wear that suit.PerroneFord:LOL!!!
Any wonder why I am apprehensive about diving with you! Wanna dive a U-Boat?
PerroneFord:LOL!!!
Any wonder why I am apprehensive about diving with you! Wanna dive a U-Boat?
Yes! I need to make a pair tonight. Anyone know how to make the divers horizontal?ClayJar:That extra air will expand and contract more with changes in pressure, i.e. depth, and will make it that much harder to keep yourself stable in the water.
Anyway, it was an interesting little physics lesson for him, and he now knows that he doesn't want to be overweighted and *why*.
Actually, quite a bit. In fact, one of my diving goals is to become an instructor, as I simply enjoy helping people reach that "Aha!" moment where they not only realize what I'm teaching them, but they realize why they want to learn it.TSandM:What a COOL idea for a demonstration! Ever thought about teaching?
Well, it's all static balancing... If you used a slightly curved tube (shaped like a very flat rainbow) with a dense weight in the center (under the rainbow), it may be possible to get a stable configuration that appears to be horizontal. Or you could just fake it by having a vertical tube inside a plastic horizontal diver.Thalassamania:Yes! I need to make a pair tonight. Anyone know how to make the divers horizontal?
Thalassamania:Buoyancy control is difficult for students to learn and thus it is difficult for instructors to teach. It takes time and care; often more time than is available in a short class and more care than many instructors are willing to give. PADIs solution to this has been to require instructors to teach a completely useless and counterproductive skill the fin pivot. The only good thing about a fin pivot is that it is easier to teach than real buoyancy control. The PADI program has you learn this skill that you will never use and then learn real buoyancy control in a later class, the so called Peak Performance Buoyancy class. I fell that the fin pivot just develops bad habits in divers and puts them in a frame of kinesthetic sense that they drop back into whenever they are stressed or confused. I seen many new divers, in mid water, try and do a new skill or get stressed by something and revert to a knees down, head up attitude, loose all sense of buoyancy control and start to sink. If what we call the Law of Primacy in the Ed biz, what you learn first is often what you learn best. Its too late for you to do anything about this.
This is the only place that I disagree with you and Lynne. There are times when I have to hover upright, at various angles and even upside down (e.g., collecting delicate jellies). I do not dive like a deep submarine staying level all the time, my body moves in the direction that my head leads and for me, true trim and balance is the ability to be able to hold most any conceivable attitude in that water, not just the horizontal one that you can trim your rig to stabilize at.