Arm Segments & Clamps for Underwater Photography

ULTRALIGHT'S NEW BUOYANCY ARMS
2.5 TIMES MORE BUOYANT
than the original buoyancy arms (below)

Check out this review:
http://www.atlasomega.com/2010/08/ultralights-buoyancy-arms/

Large Buoyancy double ball arm segments were designed for the heavy Digital SLR housings and video housing.
They are 2" in diameter and constructed the same as the regular buoyancy arms.
They range in size from 8" to 16" in 2" increments to be able to add just the amount of buoyancy you need
to offset the weight of the housing and strobes or lights.

With two arm lengths, 1 AC-CSB, 2 AC-CSF, and 1 strobe adapter and 1 base adapter these are the calculations:
You will need to add in the weight of your strobes underwater to these calculations to get you to the buoyancy you need.

The new style clamp (AC-CSB) is needed to put between the two new arms if you want the arms to come together
when you are handling the whole system topside.
This clamp weighs 1.3 oz more than the regular clamp.

Salt water is approximately 1.026X more dense than fresh water.
All these tests were done in fresh water

Shows the size difference between the original buoyancy arms
and the new ones and the old clamp and the new clamp

It is important to weigh your whole system underwater.  This can be done in a pool, large laundry tub, use rope
to gather the whole set up together and then hang a scale from the rope, keeping the entire unit under the
water. The luggage scale we sell (on the what's new page) can be used for this weighing.  Just be careful
not to get the scale itself wet.  Once you know what it weighs then you can decide how much of that weight
you would like to take off the system with the sections of the buoyancy arms listed above.  Please call us to
discuss results of the above tables and how they correlate to your weighed system.  You might want to
weigh your system with different lenses and ports for more accurate diving conditions.

E-mail for a copy of the 2" buoyancy arms weight and measurements chart

AC-CS -Standard clamp used to attach two arms,
base adapters and strobe adapters together. (Puts 2 ball together)

AC-CSF - Newer style clamp allows 15 degrees side to side movement of the balls

AC-TCS Triple clamp replaces a regular clamp in an arm set, allowing use of
another piece with a ball to be added

AC-TRI - Tripod clamp, has cut outs in the bottom piece to allow for arms to be
used as legs of the tripod so the tripod can be laid completely flat
See tripod on what's new page

Next: Strobe and Light Adapters