Results 1 to 5 of 5
  1. #1
    Member
    Join Date
    May 2017
    Location
    Mesa, Arizona
    Posts
    17

    21p to 22p Speed Increase Question

    My current setup is a 1992 17.5' Skeeter, a 1992 130hp Yamaha 2 stroke, a 6" manual jackplate and a 3x13.25x21p SS Yamaha prop. The jackplate is set to 3" P2P with 18-20psi water pressure. I can hit 53mph at 5900rpm with this. The max rpm for this motor is 5-6k. My question is, if I purchased a Laser II 3x13.5x22p prop, how much speed do you think I would gain and is whether it is worth it or not? Thanks in advance for any replies.

  2. Member
    Join Date
    Jul 2004
    Location
    Penn PA
    Posts
    15,189
    #2
    You won't gain any speed......
    Your current RPM's are good.....



  3. Dam Fool rangerbobber's Avatar
    Join Date
    Feb 2011
    Location
    North End of Beautiful Norfork Lake...MO/AR Border
    Posts
    3,631
    #3
    If you're not happy with that, you might want to start looking at different boats because you are pretty much maxed out....
    Last edited by rangerbobber; 11-06-2017 at 09:02 PM.

  4. Member
    Join Date
    May 2017
    Location
    Mesa, Arizona
    Posts
    17
    #4
    That's kinda what I was thinking. I'm new to boating. Thanks for the verification!

  5. Member
    Join Date
    Jan 2005
    Location
    Red Oak Va.
    Posts
    10,597
    #5
    How old is the prop and what shape is it in? You may just need to have the prop repaired to factory spec and can probably run that motor higher than 3" under. Yamaha's run lower water pressure than Mercury's do so 18-20 psi is high for a Yamaha which can run as low as 11 lbs at WOT.