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I am having issues trouble shooting an older Minn Kota. Everything appears solid but the motor bogs down at 90-100%. Even at 50% the motor bogs down when in the water Can y'all help me figure out what piece is the culprit. Dang I tried to send a video but it won't deliver. Sent a blurry picture to show how clean brushes are.Attachment 379198
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Put the motor up in run position. Take the prop off. Make sure no line is twisted around under it. Loosen the 2 bolts that hold the end cap on and look for any water coming out. If there is take it apart, give it a good cleaning, check the brushes and reassemble using new seals.
I've given the unit a good cleaning. I also tuned it before I cinched the end housing bolts. Went back through it again last night to make sure I didn't miss anything. I even took the brush housing off to check power terminals. They were shiny put it back together. And still bogs down.
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Just by chance, have you checked the battery voltage when it bogs down?
No sir but I can... sure enough. Dang good point.
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Was the battery the problem?
Bypass the control board and apply battery directly to the motor. Disconnect terminals at control board and connect to the wires. This will eliminate the control board.
The motor should run at max speed this way.
All right followed Cane Pole suggestions....bypassed the control board. It ran smooth at high speed. Any suggestions on eliminating this problem versus finding a board.
1. Can I put in a pwm and eliminate the board all together for propeller power. Steering motor still works ok.
2. Can I convert it to 12V with the pwm?
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I have now found Cane Pole recommendation for a DC reversible pwm. Will that allow me to bypass the board
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I would check the voltage at the battery when trying to run full speed. Voltage drop somewhere or something is current limiting. Don't buy a controle board just yet.
what trolling motor model are we talking about?
It is a 24v/48# Minn Kota older power drive. It is now refered to as Legacy. It's the motor with the flat plug on the pedal control
Could a pwm take the place of the board
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Quote:
Originally Posted by catchNgrease
yes, but the big problem is waterproofing and cooling the pwm FETs.
Have you checked your foot pedal? There is a slide potentiometer that might not be working properly.
I have not checked the pedal. I'll open it and clean it today.
Thanks for helping me.
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I may have misled you on the pot. I believe your model may have a speed selector. BUT, the speed switch might not be working properly. Clean it good. Sorry, I have a v2 model. Does your tm have autopilot? I am looking at the parts drawings.
The older control board looks like a pwm board though.
I n ever seen one like yours in person, but I kinda know how they work.
Yes to the autopilot
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DOES the speed control slide or does it click when changing speeds?
Slides just like the v2
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Life happened and I ain't opened the pedal yet
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OK. It is a pwm system then. Do you have an ohmeter? If so, when you open the foort pedal, I will tell you how to check it.
The potentiometer is a etched on carbon resistor. 1k. It uses magnets in the slider assy to make contact to the carbon.
Let me know. I can get on the phone with you, just remember I don't hear very well.
Lol
I think we will be fine my wife says I holler when I talk cause I can't hear either.
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could you guys repeat that ? I couldn't hear you. :Rofl Isn't getting old fun !!!
I don't holler but i have selective hearing. Hope you get the trolling motor fixed.