Re: Back Inflation and GO Diving

On Aug 27, 8:14 pm, "Adam Helberg" <sendspamh...@xxxxxxxxx> wrote:
"ben bradlee" <No...@xxxxxxxxxxx> wrote in message

news:MfmdnTe4-ICvV0zbnZ2dnUVZ_gidnZ2d@xxxxxxxxxxxxxxxxx

There was a discussion a while back on wing type and back inflation types of
buoyancy compensators. Here is something new.

Yesterday I used a wetsuit, BP/W, and 16# of lead. The dive plan was to swim a few
hundred yards and sit on the bottom and pull weeds. Sixteen pounds of lead puts me
in the grossly overweighted (GO) category. The first thing I noticed - besides
that it takes a whole crapper full of air to lift the extra 10 to 12 pounds of
weight - is that it was not possible to sit upright on the bottom of the lake with
the bladder capacity at neutral buoyancy. The wing pushed my head down so as to be
parallel with the earth. On the surface it was the same. All this leads me to
conclude that one could drown rather easily with this type of equipment given the
right circumstances.

Sounds like you were overweighted. If you did this to work on the bottom then you
should just deflate the BC and you can walk around the bottom. You can also adjust
trim by moving the weight farther back toward the wing.
Adam

He doesn't mention the type of BC he is using, so I'm not sure how you
are arriving at your conclusion that he was overweighted and needed to
move the weight farther back. There are back-inflation BC's (like
the one I have) that have pockets for weights. You don't move the
weights anywhere in that case. They stay put in the pocket. I
suppose if you wanted to, you could add a weightbelt or a tank weight
if you felt that might help adjust your trim. I've never had to do
that. Furthermore, if he felt he couldn't sit upright at "neutral",
and he was overweighted, then why not just let some more air out ? I
mean if you let all the air out and you're that much overweighted,
then eventually your *** is gonna be firmly planted on the bottom.
With no air in the wings, there should be no reason why you couldn't
sit upright.

.

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