Re: [PSUBS-MAILIST] Troller motors

["Dan H." <JMachine@adelphia.net>]

Yes it is... But!
Keep in mind that a large bladder will act as a soft ballast tank.
The deeper you go the smaller your bladder gets and the faster your sub
dives.

Dan H.

----- Original Message -----
From: "Helmandollar, Troy A" <HelmanTA@bp.com>
To: <personal_submersibles@psubs.org>
Sent: Tuesday, July 01, 2003 9:01 PM
Subject: 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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