[PSUBS-MAILIST] batteries

Wed Nov 1 14:34:36 EDT 2017

Hi Rick,

Yes, the standard Min kota controller has reverse.  Its just a
potentiometer on a knob.

I went for 24v min kota rip tide 80's.  Wish I had gone for the 101's
to be honest.

I have the aft thruster rigged with the controller at the side of the
seat, so I set the power and trundle off.  I tend to use the aft
thruster for surface driving or slow seabed cruising, so its ok where
it is.  Then I use the side thrusters while submerged for manouvering.

Works ok for me.

The pots on the controllers are on a ribbon cable.  I didn't dare cut
them to extend to anything more useful, although I suspect it would
work.

To be honest, that's why I changed the side thrusters to simple on\off
relays.  The pots were to complicated to move.

Got a couple of links here on my site.
regards
James

This was how I had it originally.  Was awkward to use side thrusters.

http://www.guernseysubmarine.com/Extended_files/Page19613.htm

Main power panel.

http://www.guernseysubmarine.com/Extended_files/Page19348.htm

On 31/10/2017, Rick Patton via Personal_Submersibles
<personal_submersibles at psubs.org> wrote:
> 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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>> >>> Personal_Submersibles at psubs. org
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>> >
>> >>
>> >>
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