"Terry Spragg" wrote in message
...
Brian Whatcott wrote:
On Mon, 21 Nov 2005 10:49:53 +1100, "d parker"
wrote:


"News f2s" wrote in message
...

///


Well, once a month I take a swim with a wire brush, take a few deep
breaths and the see how long I can stay underwater hanging on to the
prop shaft. But then I'm in warm water (never less than 18C) and it's
clean and clear.

Sorry, didn't really answer your question, but that's my conventional
wisdom on the subject.

JimB


hmmm... Ever thought of attaching a regular snorkel to some larger hose?
Vacuum hose is great with a float at the loose end. You can stay down a
lot longer. Some of the co2 you exhale will get re-inhaled each time. I
havent passed out yet though.. Fingers crossed.

DP


How about a y fitting from the snorkel to two vacuum hoses, the float
on one would have a caged ping pong ball for an outflow only
and the float on the other would have a soft sprung flapper for an
inflow only??

Brian Whatcott Altus OK


All you need is an exhalation valve at the mask, and an iron lung to
enable you to suck air below about 4 feet. Try it, just suck in through
the mouth using a harden hose and exhale through your nose. Good luck.

Or a powered snorkel pump on a float on the surface, know as a hooka, and
some dive weights.

Terry K


Yeh the harden hose is difficult at longer lengths. So is garden hose. Thats
why, in my initial post, i recomened a larger diameter hose you see

DP