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RE: [PSUBS-MAILIST] Troller motors
Thank you, thats another good option.
-----Original Message-----
From: Paul Suds [mailto:subs_n_suds@hotmail.com]
Sent: Tuesday, July 01, 2003 11:48 AM
To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] Troller motors
Here's another option with some similarities to past inputs. Some
pressure
compensated sealed instruments use a small bladder attached to the
housing.
You would have to measure the free air volume inside the motor housing
(use
an inert liquid), then affix a tube to the housing and connect that to
an
air bladder. The volume would be based on the desired depth (volume of
bladder reduced), and the free air space of the trolling motor. The
bladder
could be attached to the outside of the housing with an appropriate
cover,
or it could be located in a remote location via the tubing. If you had
more
than one motor, it could share the same bladder, albeit a larger
bladder.
I would make sure you desiccate the air prior to filling. This will
minimize
moisture entrapment when the air is pressurized.
Air, although more prone to pressure problems, is better than oil for
trolling motors, for some of the reasons mentioned in past postings.
Sorry, have to go, my bladder is full :)
Suds
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