25hp Merc 2s-What 4 Blade Prop Pitch?

Discussion in 'Prop Shop' started by Rollbar, Jan 19, 2017.

  1. Rollbar

    Rollbar Well-Known Member

    199
    32
    103
    I have a 25hp Merc and currently it has a 13P 3 blade aluminum prop on it (2106R 13)(38x13P).
    Problem: prop blow-out.
    Transom is 16 1/8" tall and this motor is a short shaft which measures 17" from mount to cav plate-Not much room there in height/can't adjust down.
    It blows out just before the boat planes and I back off it just a little to grab and then I can proceed to WOT which I run at 27mph loaded/2ppl.
    Running rpm w/this prop is 5880-6k.
    Given the OEM prop I have (listed above) what pitch would I need in a 4 blade aluminum prop?
    I would like to stay w/aluminum and looking at the Solas or Hustler prop if possible.

    Motor specs if needed:
    Ser# 0D182388
    GR: 2.25
    Thanks again,

    Link to boat pics if needed:
    http://www.microskiff.com/threads/134-stumpnocker-skiff-tiller.41689/#post-326725
     
    Last edited: Jan 19, 2017
  2. Rollbar

    Rollbar Well-Known Member

    199
    32
    103

  3. Skiff Junky

    Skiff Junky Well-Known Member

    143
    65
    103
    Full disclosure: This is my ad.

    These props are left over from back in the day when I did this.;)

    http://www.microskiff.com/threads/props-for-25hp-merc-2-stroke.37801/

    The 4 blade 13p with extra cup should do the trick. If not, you most likely have a set up issue. Keep in mind, when I used to do this 50% was set up and 50% was prop.

    Never was fond of Solas SS props as they were too unpredictable for me. That said, lots of people have claimed to have luck with them on this site.

    If you go the aluminum route, you will need to find a shop that will cup it (properly) for you.
     
    Rollbar likes this.
  4. Rollbar

    Rollbar Well-Known Member

    199
    32
    103
    I would go with the Hustler prop before the Solas since (I believe) the Hustler has a changeable hub.

    I'll check your link.
    Thanks,
     
  5. devrep

    devrep Well-Known Member

    1,878
    560
    968
    I have a once used aluminum Solas Amita 4, 1213-100-13 if you're interested. MB4x10x1RB.
     
    Rollbar likes this.
  6. Rollbar

    Rollbar Well-Known Member

    199
    32
    103
    Maybe.
    Asking ?
     
  7. devrep

    devrep Well-Known Member

    1,878
    560
    968
    50. prop is in Orlando.
     
    Rollbar likes this.
  8. Rollbar

    Rollbar Well-Known Member

    199
    32
    103
    PM sent.
     
  9. devrep

    devrep Well-Known Member

    1,878
    560
    968
    here it is, not a scratch or nick. No paint wear.

    [​IMG]
     
    Rollbar likes this.
  10. ryderfzr

    ryderfzr I Love microskiff.com!

    58
    19
    93
    bump thats a steal 50% of new
     
  11. Rollbar

    Rollbar Well-Known Member

    199
    32
    103