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  1. #1
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    ULTREX acts weird while in Auto Pilot

    If I set the auto pilot on my ULTREX the motor continuously goes left and right about 3 inches back-and-forth constantly. It hold the direction. It did not used to do this. Does anybody understand why does this? Thanks

  2. Member
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    #2
    Mine does that when the prop is seriously fouled with grass.

  3. Member
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    #3
    Mine would do that occasionally. Usually when it was calm. Try turning the boat scale down

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    #4
    Thx for the replies. The prop was clean. It was pretty calm out so I will scale back the boat size to see if that helps. Thanks for the suggestions. What is a bit confusing is it has never did this prior.

  5. Member
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    #5
    mine does that too and it drives me crazy, it usually does that when its a calm day with little to no wind and current.
    2004 Stratos 295 Pro XL
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  6. Member
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    #6
    Mine does this when I'm going 2.5 or less and trying to crawl down a shoreline. It doesn't do it often, but it does seem to do it more when there is no wind, or very slight tail wind pushing the boat causing it to make constant small corrections.
    1994 Ranger 492VS
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  7. Charger Boats Moderator TOUCH OF CLASS's Avatar
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    #7
    Mine does it also when no wind,wife ask is it going to self destruct!

  8. Member
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    #8
    Needs wind/current or it will keep over correcting. The easy solution is to just not use when it is calm, the boat wont move much anyway.
    Chris

    2020 Nitro Z19 Pro w/ 200 ProXS

  9. Member
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    #9
    My Ulterra has the same electronics and it does this when I am creeping along on calm days. Faster speeds or more wind and its OK. I spoke with MinnKota technical support about it and he said it was most likely related to the GPS and how often it pinged the satellites. I either turn AutoPilot off or switch to the Magnetic compass for my Autopilot.
    Joe B

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  10. Member
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    #10
    Quote Originally Posted by C0MRAD View Post
    Needs wind/current or it will keep over correcting. The easy solution is to just not use when it is calm, the boat wont move much anyway.
    when it’s calm is one of the times when I use mine, I creep along shorelines at a slow pace.

  11. Member fastman151's Avatar
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    #11
    Quote Originally Posted by itsahog View Post
    If I set the auto pilot on my ULTREX the motor continuously goes left and right about 3 inches back-and-forth constantly. It hold the direction. It did not used to do this. Does anybody understand why does this? Thanks
    Had the same problem.....turning the boat scale down fixed it.
    Just can't leave well enough alone!!

    98 Stratos 273 w/ 150 Faststrike

  12. Southern BAMA Bassin
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    #12
    Fortrex don't have that problem.

  13. Member
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    Cameron, NC
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    #13
    It could need to be recalibrated. A friend had the same problem and corrected it after recalibration.
    USAF Retired 1981-2004
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  14. Member
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    #14
    Having similar issues. Fastman151 what do you mean turning the boat scale down? Not familiar with that.

  15. Member
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    #15
    In your settings there is a selection called boat scale. The lower the setting the slower the motor corrects its position. Lower settings help keep it from continuously over correcting in calm conditions. On my aluminum boat I have it set on -2 but you need to experiment and find what works best for your boat.

  16. Member Jim R's Avatar
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    #16
    Quote Originally Posted by ALMOSES View Post
    Fortrex don't have that problem.
    Fortrex doesn’t have a lot of sh*t the Ultrex offers...sorry that you haven’t seen the light yet. And you do realize most Ultrex owners switched from the Fortrex, right?

  17. Member
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    #17
    Just don’t sell the fortrex like I mistakingly did. You’ll need it when the Ultrex is the shop.
    Pete | 2011 Ranger Z118 | Yamaha HPDI 150

  18. Member
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    #18
    Boat Scale setting. Most of us use the - 2 option.

  19. Member
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    #19
    Quote Originally Posted by dricha21 View Post
    Having similar issues. Fastman151 what do you mean turning the boat scale down? Not familiar with that.
    Go into your 'Settings' option on your remote control. You'll see the Boat Scale setting there.

  20. Member
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    Jan 2014
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    #20
    If you set the mode to "Legacy" using you remote, it will use a compass heading instead of the GPS heading and it will stop the constant back and forth movement

    Untitled picture.png

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