Giving Up the Gas

Discussion in 'Work Safe' started by CaddmannQ, Apr 20, 2017 at 6:43 PM.

  1. CaddmannQ

    CaddmannQ .308 Supporter

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    I finally decided that I want to fish at Lakes where they do not allow jet skis, ski boats, outboard motors, or noisy people of any sort.

    So my 1969 Evinrude is going the way of the Dodo.
    1492727788524-367984643.jpg

    I've got a couple of 55 pound thrust electric motors, and coupled with my 40 pound thrust Minn Kota, I should be able to navigate the calm Waters that I intend to fish.

    My neighbor Dave gave me these Navigator trolling motors, plus their brackets, controllers and wiring, 15 years ago. I am finally going to use them. Here's my first mock-up...
    1492727830657-199079571.jpg
    The brackets will have to change completely and the original controllers are wasteful of electricity and I'm just going to wire these motors up with direct switching.

    Unfortunately electric motor controller circuits (even the modern ones) get very expensive when you're trying to control motors this large.

    Fortunately, since these work, I can sell them for a good amount of money on eBay since you cannot buy them anymore.

    I can use my 40 pound thrust motor for fine speed control and front steering, and the rear Motors will be on or off & tied by a rudder to my remote steering stick.

    So my next task is: I have to build a rudder. Then I will need some more batteries. Big ones. The boat will not get lighter, just quieter and more stable, since the weight will be distributed along the hull instead of mostly at the stern.

    Also I will probably eventually switch the rear Motors with simple switches from 6 to 12 to 24 volts, so I can at least have some speed control on them. On the other hand, after my first fishing trip I may decide this is completely unnecessary.
  2. ripjack13

    ripjack13 Resident Sawdust Maker Staff Member Administrator Forum Moderator Supporter "Philanthropist"

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  3. John A.

    John A. I'm "THAT" guy Staff Member Global Moderator Forum Moderator

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    I don't think I've ever seen that done before. It's not a bad idea though.

    I have one of the minn kota with a foot controller on my bass boat.
  4. MikeD

    MikeD I'm Your Huckleberry Staff Member Global Moderator Forum Moderator "Philanthropist"

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    I think I would try to use that to replace the lower unit on an old outboard. that way you still have all the steering, trim, etc you have with the outboard.

    I like the concept. I think I have actually seen something similar somewhere but it's not coming to mind at the moment.
  5. CaddmannQ

    CaddmannQ .308 Supporter

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    Well I considered that, but I have two Motors and I don't want this business to be any heavier than it absolutely needs to be so it will probably end up being a fairly light duty business or plastic and thin wall conduit.

    I'm dumping all this stock bracketry, because it is heavy & just looks like excess hydrodynamic drag.
  6. MikeD

    MikeD I'm Your Huckleberry Staff Member Global Moderator Forum Moderator "Philanthropist"

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    If you took std motor and stripped the motor itself out as well as the drive shaft, that would reduce the weight a lot. You might them be able to run the power cables up through the unit as well.
  7. CaddmannQ

    CaddmannQ .308 Supporter

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    I considered that, as my "shell" would be strong enough.

    But, these motors both rotate in the same direction, so for best performance I should put them as far apart as practical.

    The stock brackets don't get them that far apart, so I still have to do something fancy as far as mounting the motors.

    If I can get matching left and right hand propellers, I could just switch the polarity on one motor, and then they could be close; but as far as I can tell they are unavailable.

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