MK AT50 (50 pound thrust) are DEFINETLY a resistor controlled, in the pod, type motor.
Only the PWM ones are not. There are three positive wires entering the shaft feeding two resistors
in the front pod. The 5 speed switch uses a combination of those resistors.
You can check the links provided for all the info.
When you shorten the shaft ensure it is water tight or you WILL destroy the motor.
I know most of this does not apply to the majority of the members on this forum, but lets get are info straight.
Only the PWM ones are not. There are three positive wires entering the shaft feeding two resistors
in the front pod. The 5 speed switch uses a combination of those resistors.
You can check the links provided for all the info.
When you shorten the shaft ensure it is water tight or you WILL destroy the motor.
I know most of this does not apply to the majority of the members on this forum, but lets get are info straight.
mattelderca
From: John Kohnen <jhkohnen@boat-links.com>
To: electricboats@yahoogroups.com
Sent: Tuesday, June 18, 2013 11:38:43 AM
Subject: Re: [Electric Boats] Re: Minnkotas - resister vs pulse width modulation
The 28 lb. thrust Minn Kota I modified for remote control had lots of
wires running down the tube. I'll bet the newer resistor controlled ones
do too:
http://www.boat-links.com/images/TrollingRemote/TrollingRemote-1.jpg
http://www.boat-links.com/images/TrollingRemote/TrollingRemote-2.jpg
http://www.boat-links.com/images/TrollingRemote/TrollingRemote-3.jpg
I did some tests years ago running a Minn Kota Endura 30 on my 15' sailing
skiff and discovered that the current draw of that resistor controlled
motor was MUCH lower at reduced power settings. Alas, I lost the figures
and don't remember the amps and speeds, but I found that the most
economical compromise between battery life and growing old before getting
there was at setting 4. 3 was fine if you weren't really going anywhere,
which describes much of what I do on the water, and was easier on the
battery.
Of course the electronically controlled Minn Kotas do even better at lower
settings, but you can still save a lot of battery by "throttling" down a
resistor controlled motor. I think the Endura 30 is a great bargain for
small boats. If you don't like the shorter range of the resistor
controlled motor you can buy an extra battery and still be a lot cheaper
than least expensive electronic Minn Kota. <g>
On Tue, 18 Jun 2013 08:09:51 -0700, oak wrote:
> You're right that it would be nice to put the resistors in the pod where
> they are cooled by the water. The problem is that you would THEN have
> to add relays to switch the leads, or at least run extra wires down the
> tube. ...
--
John (jkohnen@boat-links.com)
Sailing intensifies life. (Sir Francis Chichester)
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