Mailing List Archive

Mailing List: techdiver

Message Display

Your Comments:
When I dived one, I found I was causing an open circuit effect, as the
variable volume was insufficient for my lung capacity. 

Reply:
When I first started diving the unit, I found similar problems. It was not a
problem with the unit but the way I set it up. 

The BCD design has a set of tear away covers over the counter lung.
When setting up the unit, you have a natural tendency to pull these cover
tight. This in fact causes a slight reduction in the over all shell space for
the counter lung and consequently prevents the counter lung from
expanding fully. For most divers, this does not cause a problem as the
volume is still sufficient. However, like you, I would over breathe the bag.
I found that by increasing the resistance on the dump valve and by not
tightening the tear away flaps over the counter lung the problem was
resolved.

Navigate by Author: [Previous] [Next] [Author Search Index]
Navigate by Subject: [Previous] [Next] [Subject Search Index]

[Send Reply] [Send Message with New Topic]

[Search Selection] [Mailing List Home] [Home]