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  1. #1
    Member
    Join Date
    Jan 2008
    Location
    Central City
    Posts
    42

    Any Help on understanding over trim

    Theres been alot of post on here talking about overtrimming causing problems. I was wondering if there was an exact way to get you boat to that "perfect" trim setting. and mark the gauge for future referance. Any help would greatly be appreciated. I have a TR-196 PD with a Merc. 150 hp XR6 . Any prop suggestions or setup tips would be helpful also. I'm running a tempest 23".
    JignPig2006 ***GOD BLESS***

  2. Electrical/Wiring/Trolling Motors Moderator CatFan's Avatar
    Join Date
    Jun 2004
    Location
    SW Indiana
    Posts
    26,064
    #2

    Re: Any Help on understanding over trim (JignPig1999)

    Don't trust the gauge. The "right" setting will change depending on water conditions, load, air temperature, whether your livewells are full or empty etc. You'll get to where you just "know". I trim it until the RPMs quit going up, then back it down just a hair. After a while, you don't even pay any attention to what your hand is doing on the trim.
    If you have integrity, nothing else matters. If you don't have integrity,
    nothing else matters.​

  3. Member
    Join Date
    Jan 2008
    Location
    Central City
    Posts
    42
    #3

    Re: Any Help on understanding over trim (CatFan)

    Thanks for the help, I've heard about trimming until your speed quites going up and then back off a hair. Some people has said you can gain RPMs but loose speed by over trimming and thats where I was trying to find info. Thats kinda the way I go about it now. Thanks again
    JignPig2006 ***GOD BLESS***

  4. Member
    Join Date
    Feb 2006
    Location
    Bella Vista . ,AR
    Posts
    2,756
    #4

    Re: Any Help on understanding over trim (JignPig1999)

    i dont have hydraulic steering so i just trim up till my steering wheel feels looser ,hope this makes sense

  5. Member
    Join Date
    Dec 2007
    Location
    crossville
    Posts
    773
    #5

    Re: Any Help on understanding over trim (JignPig1999)

    jignpig
    you heard right. overtrimming reduces forward thrust from the prop. it lets the rpm go up due to less bite. assuming the height is set right, then what you said about finding the spot and backing off a little is right on the money.



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