08-04-2008, 09:10 PM
[quote flygoddess]You are most wise grasshopper. But with Kevlar already being heavier (I use kevlar thread in my sinking leaders for that reason) would that be cause for it to ride lower? [/quote]
Ah, but you don't have the micro-molecular 0.002 micron Kevlar bladder!
Heavy is only a matter of thickness.
[quote flygoddess]Hard versus soft. If you lie across a pipe filled with air, it will not change its form, but if you laid across a ballon tube filled with are, it is nolonger a tube but rather two balls at each side causing air displacement right?
Granted we already agree that the outer cover is the key to all tubes.[/quote]
You're right, about pipe vs balloon, but that's moot when considering that the shape of the skin determines volume.
[quote flygoddess]If you take a car tube and fill it with say 20 lbs of air, then you take the same size plastic kiddie tube, there is no way you are going to get the same amount of air in it. Which will float more weight at the same size?[/quote]
20 lbs. Weight? Or inflation to 20 psi? If you fill a rubber car tube without a tire to 20 psi, it'll explode. Same with the kiddie tube. OTOH, if you fill them with the same volume of air, both will float the same amount of weight if you properly support it (using a skin or something similar) if you disregard the weight of the tube/seahorse. Pressure in a float tube primarily determines rigidity, not buoyancy. So to answer your question, both will float the same amount of weight at the same size.
_SHig
[signature]
Ah, but you don't have the micro-molecular 0.002 micron Kevlar bladder!
Heavy is only a matter of thickness.[quote flygoddess]Hard versus soft. If you lie across a pipe filled with air, it will not change its form, but if you laid across a ballon tube filled with are, it is nolonger a tube but rather two balls at each side causing air displacement right?
Granted we already agree that the outer cover is the key to all tubes.[/quote]
You're right, about pipe vs balloon, but that's moot when considering that the shape of the skin determines volume.
[quote flygoddess]If you take a car tube and fill it with say 20 lbs of air, then you take the same size plastic kiddie tube, there is no way you are going to get the same amount of air in it. Which will float more weight at the same size?[/quote]
20 lbs. Weight? Or inflation to 20 psi? If you fill a rubber car tube without a tire to 20 psi, it'll explode. Same with the kiddie tube. OTOH, if you fill them with the same volume of air, both will float the same amount of weight if you properly support it (using a skin or something similar) if you disregard the weight of the tube/seahorse. Pressure in a float tube primarily determines rigidity, not buoyancy. So to answer your question, both will float the same amount of weight at the same size.
_SHig
[signature]