In a message dated 3/27/2010 1:52:59 P.M. Pacific Daylight Time,
vbra676539@aol.com writes:
How will you seal one to the other? Hi Vance. I'll try using clear vinyl tubing and hose barbs to connect the
oil lines between the bladder and components needing pressure compensation. The
rubber CV boot can have a small air bubble at the top if there's a few small
ones that work their way through the system. That's what the fill/bleed valve is
for. There shouldn't be any pressure differential in the system as the flexible
bellows will expand and retract as needed.
For sealing I'm using the same stuff as the electrical wires. Brass hose
barb fittings threaded into the components and thru-hulls, vinyl tubing and
hose clamps, then all the connections get covered with a coating of Vulchem.
It's a liquid form of polyurethane that can be painted on. It looks like that
"plasti-dip" stuff for dipping tool handles in, except it sticks better.
Alan..... I was just looking at the pictures you put up
with the wooden scale model of the actuator filled with water. It
looks like it's sealed up with no where for the water to go so the
bellows doesn't expand or collapse, but just deforms. I think the IV bag
idea might work but not sure how tough it would be, or resistant
to sunlight and abrasion. Frank
D.
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