[PSUBS-MAILIST] question

[Rick Patton via Personal_Submersibles]

I am using the dial that came with the motor, I just removed it from what
it was mounted on and fabricated my own small box to put it in. I am not
sure which one of the three is the wiper leg? It had been working in the
past the few times I tried it.  Jon, do you remember who we bought our
motors from and I will see if they would just sell the potentiometer.

Rick




On Mon, Sep 29, 2025 at 11:13 AM Cliff Redus via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Rick sounds like a bad potentiometer.  Minn Kota controllers often have a
> potentiometer on the controller.  The two outer legs are ground and 5 Vdc
> signal from the motor controller, the third leg is the wiper leg, which is
> used to send a 0-5 vdc signal the motor controller.  0 vdc is full speed in
> one direction, 5 vdc is full speed in the opposite direction and 2.5 vdc is
> the neutral position with no rotation.  There is a dead band around the 2.5
> vdc level.  Check the wiper leg of the potentiometer with a multimeter and
> confirm it is giving a 0-5 vdc signal as you rotate the potentiometer.  If
> not replace it.
>
> Best
>
> On Monday, September 29, 2025 at 01:56:49 PM CDT, Rick Patton via
> Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
>
> I am going through all the systems before her first launch and noted that
> my starboard Minn-Kota thruster when energised goes full power in one
> direction only and then stops quickly when the rheostat is rotated all the
> way in one direction.  Any ideas on how to troubleshoot something like that?
> I also bought a bottle of sika flex primer for installing the conical
> viewport in the hatch which is a metal to acrylic situation and used first
> before bedding the surface with the sika flex goopy and use about a
> tablespoon of the $85 bottle and don't need it anymore so if anyone would
> like it, you can have it.
>
> Rick
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