[PSUBS-MAILIST] batteries

Tue Oct 31 17:55:29 EDT 2017

James,

I didn't realize that the Minn-Kota controllers had a reverse setting?
Rick

On Tue, Oct 31, 2017 at 3:39 AM, James Frankland via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> I have continuous duty ones at a suitable current rating.  Cant
> remember off hand.  But I don't have the reversing because I can
> rotate the side motors for reverse.  So I just have 1 relay per motor.
> Super simple.
>
> Also have the standard minn kota controller on the rear thruster.
> which allows reverse and speed control.  All 3 items all fit into one
> box with a cooling fan for good measure.
>
> Sorry, cant recommend anything other than the simple setup I have.
>
>
> On 31 October 2017 at 11:55, hank pronk via Personal_Submersibles
> <personal_submersibles at psubs.org> wrote:
> > Hi James,
> > I am using continues duty relays and it takes 4 relays per motor.  On my
> > vertical thrusters I am using reversing relays (single relay)  but they
> are
> > not continues duty, witch is okay.  I want to simplify by using reversing
> > relays (continuous duty) on the main motors.  I thought maybe you already
> > have that and could recommend what works.
> > Hank
> >
> > On Tuesday, October 31, 2017, 5:14:50 AM MDT, James Frankland via
> > Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> >
> >
> > Hi Hank,
> >
> > I cant remember off the top of my head now.  I just had a quick search
> > and I cant find them.  They are just standard high current 24v pots of
> > some sort.
> >
> > I seem to remember they were similar to yours.  Or some that you had
> used.
> >
> > James
> >
> > On 31 October 2017 at 10:25, hank pronk via Personal_Submersibles
> > <personal_submersibles at psubs.org> wrote:
> >> Hi James,
> >> What type of relays are you using?
> >> Hank
> >>
> >>
> >> On Tuesday, October 31, 2017, 3:10:27 AM MDT, James Frankland via
> >> Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> >>
> >>
> >> Hi rick,
> >> I'm here.  What do you want to know?  I'm using minn Kota rip tide 80's
> at
> >> 24v.  2x banks of 4 agm's. These are wired in 2 pairs of batteries in
> >> series
> >> with both pairs connected to the main terminals.  I have a standard
> heavy
> >> switch so I can use each bank separately or both together.  I used heavy
> >> tinned marine cable.  Can't remember the thickness.
> >>
> >> I find my motors a little underpowered, but other than that it seems
> fine.
> >>
> >> Aft thruster has the minn Kota controller, I originally had those on the
> >> sides but found it a pain, so I changed those to have just on/off
> relays.
> >> Much better.
> >>
> >> Regards,
> >> James
> >>
> >> On Monday, 30 October 2017, Rick Patton via Personal_Submersibles
> >> <personal_submersibles at psubs.org> wrote:
> >>
> >> Alan
> >> Yes there are 2 separate pods each containing 4 each 12v batteries , 3
> for
> >> the 36v for thrusters & 1 for the onboard systems.
> >> DAN H built his per plans and specs and is running his stern thruster
> off
> >> one side & and sides off the other side but he is not running
> Minn-Kotas.
> >> I am hopping James Franklin will chime in as he is using the Minn-Kotas
> in
> >> his.
> >> Rick
> >>
> >> On Sun, Oct 29, 2017 at 8:13 PM Alan via Personal_Submersibles
> >> <personal_submersibles at psubs. org> wrote:
> >>
> >> Rick,
> >> I am not familiar with the k350 battery set up, but are there two
> >> battery pods with 3 x 12V batteries in each pod?
> >> What are the other k350 owners doing? Do they run the 3 thrusters
> >> off the 2 battery pods similtaneously i.e. connect both pods in
> parallel.
> >> If you did this then you would only be drawing half the amps off each
> >> battery pod, than you would be if you were using one.
> >> I wonder what traction batteries mobility scooters use?
> >> Cheers Alan
> >>
> >>
> >>
> >>
> >>
> >> Sent from my iPad
> >>
> >>> On 29/10/2017, at 9:27 AM, Rick Patton via Personal_Submersibles
> >>> <personal_submersibles at psubs. org> wrote:
> >>>
> >>> I am trying to size my wire for the 36v side from where the power comes
> >>> into the sub to selector switch to hot buss bar and was wondering if
> that
> >>> was something that someone could answer. Also I was told by Minn-Kota
> >>> that
> >>> they recommend group 27 marine batteries.
> >>> I have a couple of deep cycle (marine batteries) on my boat and they
> are
> >>> 550 cca and 125 amps reserve capacity.
> >>> My plan is to run all three Minn-kota thrusters off of one side at a
> time
> >>> and their max draw is 46 amps max so there is 138 amps if all three
> >>> thrusters are wide open. I doubt I would ever have all three maxed for
> >>> more
> >>> than short spurts but want to be repaired for the worst case scenario
> >>> like
> >>> if I am bucking a strong current.
> >>> I also will be running 6 outside LED lights off the same bank and
> though
> >>> I
> >>> can dim them and selectively use them, all on at max would be about a
> >>> 16.6
> >>> amp draw as well. Now most of the time I will be using the thrusters at
> >>> minimal draw and not all 3 at the same time and the 6 lights will
> >>> probably
> >>> never all be on at the same time.
> >>> If everything was wide open, I would be pulling about 155 amps from a
> >>> bank
> >>> that has a reserve capacity of 125 so it would deplete the bank rather
> >>> fast
> >>> and may even damage the batteries due to a quick drain? So,,, first
> >>> question...would 2 OTT wire be sufficient from battery source to bus
> bar
> >>> as
> >>> long as I am not running full tilt on everythig and second... since I
> >>> have
> >>> to stick with a lead acid system due to design, can I get a group 27
> >>> battery
> >>> that can deliver much more than the 125 amps I have on my boat?
> >>> I also have the option of putting the battery selector switch on both
> >>> banks if I have to but would rather deplete one bank at a time if can.
> >>> Comments appreciated.
> >>> Rick
> >>> ______________________________ _________________
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> >
> >>
> >>
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