on 8/3/01 11:12 AM, Jim Cobb at cobber@ci*.co* wrote:

> There are some who swear by HP120's but once they try a set of LP104's they
> don't go back. Why are the 104's so perfect? Buoyancy characteristics. You
> can remain neutral throughout your dive and avoid a weightbelt.


Buoyancy characteristics of tanks is definitely something to study before
buying. My research reveals that the Pressed Steel tank whether low or high
pressure all have near neutral buoyancy when empty. I thought there were
other reasons why you would choose the low pressure over the high. Like
getting full or overfilled tanks, many can't pump to 3500 psi. Also a low
pressure does exert less stress on o-rings. One drawback is the overall
weight of the low pressure tank. Empty weight is 46 lbs for LB 104 compared
to 31 lbs for a HP 100. An extra 30 pounds may not mean much once your in
the water but climbing some boat ladders is where you'll feel the
difference. It's tough hoisting a set of small twin HP's over your head to
donn let along adding another 30 pounds. <g>

Steve

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