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Vance, Carsten,
I read on Karl's site that he had notched up 3000
hrs (tracking you down Vance)
I presume this was all on the air comp system.
It would be easy to have a duel system. Air
compensate & fill the motors with oil.
Keep the modified 1st stage regulator
higher than any of your 4 motors & fill the motors with oil.
Have plastic tubing running off your individual motors to a manifold
& then on to
an over pressure valve & the regulator. Fill the lines with oil to near
the manifold.
With oil expansion the oil would just move up the tube a bit but the
pressure would
remain constant as air would escape out the over pressure
valve.
If one motor was leaking you would see it by the oil level in the
connecting hoses.
If all the oil leaked out the air would take over the compensation.
Easy to do, set up for air compensation & pour some oil in.
Regards Alan
----- Original Message -----
Sent: Saturday, January 28, 2012 4:47
AM
Subject: Re: [PSUBS-MAILIST] Air
compensating motors
Karl's experience, and the rust we saw when he tore
down and overhauled the propulsion system on Idabel, suggests long-term
dampness in the system, but whether from moisture buildup from air charges on
his HP air or from minor seepage is hard to tell. I wonder if the use of
nitrogen in a stand alone compensation system would be worth a try. And a
slow, end to end system flush after diving. With no oxygen left in the system,
rust would be held at bay, and the flush might warn you of excess moisture.
Beyond that, it's hard to deny his experience. His system works. The oil comp
does, too, so it gets back down to a choice.
Vance
-----Original
Message----- From: Jon Wallace <jonw@psubs.org> To:
personal_submersibles <personal_submersibles@psubs.org> Sent: Fri,
Jan 27, 2012 10:35 am Subject: Re: [PSUBS-MAILIST] Air compensating
motors
Hi Carsten, thanks for the info!
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