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On your first point this is pretty easy. Look at set of double with bondage wings, look down from the top as from where the water would be going while you are moving. Now look again with a set of regular wings (holding them up to the sides like they would be under water). I think you will be able to see the difference. This is why airplane wings tend to look more like knife edges than bricks. On your second point my experience is quite the opposite. Take a tray of full water glasses and hold the tray with your hands on the bottom and walk around the room. Now hold the tray by its sides and try it again. Which position feels more stable to you? Having your center of flotation on the sides of your doubles is much more comfortable than having it below your doubles (this is with the diver in the horizontal position, of course). Jim Sender: Mike Zimmerman Date: 7/9/98 8:50 AM >> They assume an improper position. In the water, a traditional wing >> when inflated will press itself >> upward, wrapping around the divers tanks and, in fact, act to >> continuously maintain a thin profile. >> The retainer cords on the OMS wing keep the bladder >> constricted (round in cross-section) and >> present a greater forward profile and more drag. > >Not to try to claim bondage wings are GOOD, but on this point >I think there may be some (valid) alternate views. > >Ok, so bondage would keep wings close to body, even when inflated, >more along the plane of the body, and you claim present a larger >forward swimming profile, equalling more resistance.... > >Other wings will wrap up around the tank, providing (as you >claim) less of a forward swimming profile. > >first I must say I am not convinced about the profile. >As long as the air is disrtibuted within the wings, and >doesn't tend to collect at the top (defined as closer to >the diver's head) in one style more than the other I can't >see how wrapping around a tank accomplishes the magic trick >of providing the same bouyancy in less space. > >Second, it would seem to me that as your wings wrap around your tank >it moves the bouyancy moment (I use the term loosely) farther >away from your own center... ie it would seem to me that the >circumference of the diver as a resistive force in the way has now >increased. Just as you want your weights close to your body >I would think you'd want your bouyancy close to your body. >We wouldn't put weights on the back of our tanks as they >tend to want to flip us over... if we put bouyancy closer to >the back of our tanks, it seems like that makes it harder >to flip over when we want to, or to even turn sideways when >going thru a restriction. > >Again, leave out the other arguments about bondage wings, >if you want to disagree, just lets discuss this one point? > >Thanks, >Mike > >-- >Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. >Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'. > ------------------------------------------------------------------- Learn About Trimix at http://www.cisatlantic.com/trimix/trimix.html -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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