Re: [PSUBS-MAILIST] external Motors for depths of 1000ft

["Herve" <caribsub@coqui.net>]

Rob,
the motors are attached and work by pairs on each side . forward / reverse
I do not use the motor guide controllers but one of mine, for the 4 motors a
single controller 36 V  275 amps for variable speed and a swicthing system
which allows me to activate the 2 pairs separatly, both forw, both rev, or 1
side forward  1 side rev.
they are pressure compensated , but i tested one  with no air pressure
compensation to 140 ft and it did not leak, i presume with time it would
eventually leak.
For ascents and descents i use either dive plans or a variable buoyancy tank
my subs are designed to have max trim angle of 10 degrees but in normal use
5 degrees,
i successfully tested one once at 70 degrees, what a ride !! for an ambient
sub that a performance beleive it.
Herve
----- Original Message -----
From: "Rob Innes" <innespace@jett.net>
To: <personal_submersibles@psubs.org>
Sent: Thursday, June 20, 2002 1:40 PM
Subject: Re: [PSUBS-MAILIST] external Motors for depths of 1000ft


> Herve
>
> On your Caribsubs, do you run your motors variable speed or are they just
36V
> on/off, with no rheostat?  I presume not all four thrusters can be used
for
> forward thrust so what speed will they cruise at with the forward
thrusters.
> Did you say they are factory rated to 140 feet or has this just been a
trial
> and error depth testing on your part ? Has anyone destroyed a factory
> unmodified trolling motor by taking it too deep? Thanks for all the
input!!!
>
> Rob Innes
>
> Herve wrote:
>
> > i attache 4 motorguide 107 lbs on my subs, pretty powerfull, i usually
run
> > them at 70 %
> > They are pressure comp, for no deeper than 140 Ft you dont need to fill
them
> > up with oil.
> > Herve
> > ----- Original Message -----
> > From: "Rob Innes" <innespace@jett.net>
> > To: <personal_submersibles@psubs.org>
> > Sent: Wednesday, June 19, 2002 4:03 PM
> > Subject: Re: [PSUBS-MAILIST] external Motors for depths of 1000ft
> >
> > > Does anyone know how much resistance is caused on the trolling motors
by
> > > filling them with the oil? Approximately how much thrust could expect
to
> > be
> > > lost on a Motorguide 107lb thrust unit? Has anyone fitted one or more
of
> > these
> > > motors to a sub or DPV?  I'd be very interested in the results
> > >
> > > Rob Innes
> > >
> > >
> > >
> > >
>
>