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Hi Robert.
Here's a link to click on that shows a simple
drawing of one method of expelling co2 out of the cockpit.
Another way to do this would be to breathe thru a
scuba regulator and route your co2
exhaust out of the cabin by modifying your
regulator by adding a hose to your regulator exhaust
ports that routes your co2 out of the cabin. This will work fine for scuba depths, but if you
go deeper than scuba
depths, the water pressure will be trying to reach
your cabin air bubble and the pressure
would also be trying to go thru your exhaust hose
to reach your cabin bubble. In that case
if you were deep enough and the external water
pressure strong enough, it might break the
scuba regulator one way exhaust valve and pour
pressurized water thru the regulator into your cabin.
Scuba regulators are fine for scuba depths, but not
made to withstand extreme external water pressure
from depths that are too deep for divers to go.
If you installed
a pressure vavle on the end of your exhaust hose,
with a low pressure valve on the hose end,
where when you breathe out it takes very little
pressure to expell the co2 out, but the other end of
the valve has a high pressure valve on it so that
the water pressure cannot go back up the hose into
your regulator which could break and flood your
cabin. In other words, a one way valve that allows
you to breathe out the exhaust tube, but water
pressure cannot come back in thru the tube.
Hope this helped you.
Bill Akins.
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