Aren't the FETs underwater in the nose cone of the motor?
My resistor control motor got hot too and I know the resistors are down in the motor. not in the head.
Big chance the heat is coming from the FETs that controll the current, they can and will get rather hot, if you suspect the connectors (wich is possible) it is cheaper and quicker to solder them.Only think of goldconnectors if you disconnect them rather frequently in harsh conditions (or high end audio) IMHO.BTW The powercontrol im PWM (Pulse With Modulation) is by variing the time on/time of WITHIN one cycle of the the used frequency.More sofisticated controllers also vary the frequency from low power to high power to overcome some unwanted habits of the controller. Irritating humming at low power and heatproduction from the many induced startpulses (what is the correct english technical frase?)Carel----- Original Message -----From: Dennis WolfeSent: Monday, June 17, 2013 4:11 PMSubject: Re: [Electric Boats] Minnkotas
The heat you are feeling in the head is resistance losses from the cheap connectors. These can be replaced with gold plated bllet connectors for a few dollars. If your 'experimental' prop draws less or rhe same amps as the stock setup with the boat tied to the dock you are good for long term life.
Again, I was able to double range on my 18' sailboat by fairing the motor tube and using a 10x6 prop.
On Sunday, June 16, 2013, oak wrote:
FYI... When I did my testing on the Traxxis 80 Minn-Kota, I noticed that the control head got pretty darn hot to the touch after running for about 45 min at mostly 75% to 100% speed. So be careful! :)
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