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> From: Jim Cobb <cobber@ci*.co*>
> Have you ever used your pony, Ted?
Yes, three times that I remember in the last 20 years.
Once when I was diving in cold (34 degrees) fresh water my main
regulator froze up (uncontrolable free flow) in 80' of water. When I
reached the surface on my pony, the first stage and valve on my main
tank were a solid block of ice.
Once while diving in the Caribbean, a person who I wasn't diving
with came to me at about 110' completly out of air. You would be
amazed out how much air can be consumed by a panicked diver.
Once while fighting with a lobster my purge button became jammed
with sand and the regulator (G250) free flowed uncontrolablely.
Each time my pony allowed me to make a controlled ascent to the
surface.
Ted
>>
>
> On 1/24/98 2:20 PM Ted Green wrote:
>
> >
> >> From: Jim Cobb <cobber@ci*.co*>
> >
> >> Ted-
> >>
> >> I have some questions about your back mounting:
> >
> > Ok Jim, let me see if I can help you.
> >
> >> -How do you check the pressure of your pony while underwater?
> >
> > With a pressure guage.
> >
> >> -If you use a gauge, how do you have the gauge rigged?
> >
> > With a standard length hose that is attached on the right side
> > of my harness.
> >> -How do you keep the bottle and hoses from snagging fishing line, reel
> >> line, nets, etc.?
> >
> > I have never had it snag on any of the above, and doubt that it
> > would be any more likely to snag than my main tank. If the pony
> > were to get snagged on any thing, I would deal with it in the
> > same way as if my main tank had been snagged, cut whatever I was
> > snagged in.
> >
> >> -Can you quickly and easily pull it off when you have to while underwater?
> >
> > You don't. There is no reason to.
> >
> >> -Can you quickly and easily put it back on while underwater?
> >
> > See above.
> >
> >> -How do you check for leaks during the dive?
> >
> > Check your pressure guage every few minutes. If the pressure is
> > dropping you have a leak and it's time to end the dive. If my
> > main tank regulator were to develop a leak I would also end the
> > dive..........wouldn't you?
> >
> >> -If you do the above, how many times during the dive do you check?
> >
> > About once every 5 minutes.
> >
> >> -Can you reach the valve?
> >
> > There is no need to reach the valve. If you develop a leak it is
> > time to end the dive and there is no need to shut down the
> > regulator as it in no way will it effect your main tank air
> > supply.
> >
> >> -Isn't this weight on the side of your tank just one more thing to fall
> >> off or snag?
> >
> > Personally I don't use a weight. The balance isn't a problem
> > for me. If you can't securely attach the weight, then I dought
> > that you can mount your tank to your BC. If your afraid of
> > getting snagged, go back to the swimming pool where it's safe.
> > Sooner or later you will get snagged on something, and you just
> > have to be prepared to deal with it.
> >
> >> -How does this weight account for hydrodynamic drag unbalance?
> >
> > The weight is to counter the buoyancy difference. As for drag
> > unbalance, there is more drag effect from my camera gear, or
> > bug bag, or spear gun, or whatever else I am taking on the
> > dive with me.
> >
> >> -What do you say to the diver next to you in the tank rack when you bash
> >> your pony into his gear?
> >
> > I am careful, and thus don't have that problem. By the way,
> > last time I checked, my single with a pony wasn't as wide as
> > your doubles.
> >
> >> You might ask these same questions for those who strap a pony between
> >> your doubles.
> >
> > Funny, I don't remember suggesting a back mounted pony with
> > doubles.
> >
> >> Note that none of these questions have to asked for a stage rigged bottle.
> >
> > That's true.
> >
> >
> > Ted
> >
>
>
> -------------------------------------------------------------------
> Learn About Trimix At http://www.cisatlantic.com/trimix/trimix.html
>
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