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  1. #1
    Member StormR's Avatar
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    2018 521L / G2 250 HO

    I played with G2 to 521L pad setup today in garage. Here's what I found using yellow ruler tape on jack plate (JPR), Atlas Indicator(AI) and actual measurements of pad and prop shaft. I know the Atlas indicator numbers are mostly reference points and are not linear to actual height. Here's what I got:
    JPR on 1 inch, AI on 5 = 6.625" below pad
    JPR on 2 inch, AI on 9 = 5.625" below pad
    JPR on 3 inch, AI on 13 = 4.625" below pad
    JPR on 4 inch, AI on 17 = 3.625" below pad
    JPR on 5 inch, AI on 20 = 2.625" below pad. This max height, no more adjustment.

    I'm looking for a good "Prop shaft below pad" starting point.
    Prop is Raker HO 14.5" x 25" that came from dealer.
    My last boat ran best at 3.5" below pad. Anyone with this setup know where motor should be below pad for best performance?
    The picture shows my motor is mounted in the top mounting hole (lowest motor position). Moving motor up one hole would put my motor more of middle of the Atlas Jack Plate adjustment band. Would this be recommended or is the motor mounted in the top hole for a more important reason?
    Attached Images Attached Images

  2. Member
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    Mar 2017
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    #2
    I have the same setup. I'm still searching for right setup myself.

  3. Member
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    #3
    motor needs moved up one hole I bet--seems too deep
    2022 z519 cup 225 merc 4s ser # 3B210484. 2--hds12 live units. 2 poles, atlas plate, ghost, hamby's, active target, merc digital gauges
    2002 basscat pantera 3 (dad bought new) sold 8-2-22
    2000 stratos 20 ss (bought new) 200 hp Rude ficht great boat/motor sold 11-21
    pulled by a 2500HD Denali
    proud dad of an ARMY Captain
    MAGA
    ASE/GM Master tech before tools

  4. Member
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    #4
    Quote Originally Posted by mactlman View Post
    motor needs moved up one hole I bet--seems too deep
    Might work on a 520 but I don't think it would on a 521.

  5. Ranger Boats Moderator 22RangerZ520R's Avatar
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    #5


    2022 Ranger Z520R | 2022 Platinum F250
    Apex 19 | (2) Apex 16's | Mega 360 | Mega Live

  6. Member
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    #6
    I have a call into the factory to find out why the motor is mounted so low, it could be for rough water handling and to prevent blowout, this is just a guess

  7. Member
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    SW, Ohio
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    #7
    looks like the motor was one hole up then it was dropped down? round washer marks around second hole down? and second one up? maybe shipping marks??
    2022 z519 cup 225 merc 4s ser # 3B210484. 2--hds12 live units. 2 poles, atlas plate, ghost, hamby's, active target, merc digital gauges
    2002 basscat pantera 3 (dad bought new) sold 8-2-22
    2000 stratos 20 ss (bought new) 200 hp Rude ficht great boat/motor sold 11-21
    pulled by a 2500HD Denali
    proud dad of an ARMY Captain
    MAGA
    ASE/GM Master tech before tools

  8. Member StormR's Avatar
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    Jun 2004
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    Sanford, NC
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    65
    #8
    Most likely shipping.