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  1. #1
    Member
    Join Date
    Jul 2018
    Location
    De Pere, Wisconsin
    Posts
    44

    Praying Summer speed difference from spring

    Hey guys!! Fun fishing I usually cruise at 50-60mph. Anyways, I have a 2018 920 with 18 Pro XS, 10inch Atlas running turning 25 Fury. In the spring i was getting 74-77 mph at about 6k rpms via GPS. Now with the humidity and heat I'm seeing 68-69 mph at about 5600rpms same setting as what I was running in spring. You guys seeing that much lost of speed in this summer heat/humidity?
    ​2018 Phoenix 920 ProXP. Mercury Pro XS 250. Power Poles Blades/Humminbird Helix 10 MEGA/Minnkota Ultrex 112

  2. Member
    Join Date
    Jul 2008
    Location
    Bridge City
    Posts
    371
    #2
    im running the same setup as you except with the manual jack plate and im still seeing 74 consistently down here

  3. Member
    Join Date
    Nov 2017
    Location
    Chicago, Illinois
    Posts
    340
    #3
    A couple mph sounds ok but not 9

  4. Member cdporchejr's Avatar
    Join Date
    Jun 2011
    Location
    Broussard, LA
    Posts
    246
    #4
    I agree with above, 8-9 mph loss seems like a lot. I am still running 74-75 in this summer heat.
    2017 Phoenix 920

  5. Member
    Join Date
    Aug 2010
    Location
    Evans, Ga
    Posts
    1,055
    #5
    I run a 2012 721 with 250 Pro XS and have two props. A 27 Tempest for cooler months and a 26 Tempest Plus for the summer. The pitch change is more helpful for the hole shot during summer, but runs about 4mph slower.

  6. Member
    Join Date
    Sep 2017
    Location
    Kyle tx
    Posts
    166
    #6
    I am running 78-79 with 2 guys in and empty livewells but full tournament load and dual talons. Cooler days I’m in low 80’s