prop size for 64-13ft. - Moderated Discussion Areas

  ContinuousWave
  Whaler
  Moderated Discussion Areas
  ContinuousWave: Whaler Performance
  prop size for 64-13ft.

search | FAQ | profile | register | author help

Author Topic:   prop size for 64-13ft.

Westerly posted 07-05-2004 09:29 PM ET (US)
I have a 64-13 b.w, it has a 95 40hp 20inch merc. The motor came with a ss prop. I have trouble pulling my teenagers skiing and tubing. I do not know the prop size ,I put a jackplate on it and the boat runs with a flat type attitiude.(plowing bow) Any help with prop size and any mods would be greatly appreicated. Thanks, rob
Westerly posted 07-07-2004 10:04 PM ET (US)
bump
jimh posted 07-07-2004 11:06 PM ET (US)
To assess propeller performance, the following information must be known:
--Engine Speed
--Lower Unit gear ratio
--Propeller Pitch
--Boat Speed
Engine speed is measured by a Tachometer.
Boat speed is best measured by a GPS with DGPS or WAAS enhancement.
Take all measurements in water without current effects, in low wave conditions, and in very low winds.
Provide a table of information of engine speed versus boat speed for several speeds, including wide open throttle.
Provide the details of your current propeller pitch, diameter, blade type, and composition, and current engine maximum RPM and lower unit gear ratio.

Hop to:

Contact Us | RETURN to ContinuousWave Top Page

Powered by: Ultimate Bulletin Board, Freeware Version 2000
Purchase our Licensed Version- which adds many more features!
© Infopop Corporation (formerly Madrona Park, Inc.), 1998 - 2000.

Author	Topic: prop size for 64-13ft.
Westerly	posted 07-05-2004 09:29 PM ET (US) I have a 64-13 b.w, it has a 95 40hp 20inch merc. The motor came with a ss prop. I have trouble pulling my teenagers skiing and tubing. I do not know the prop size ,I put a jackplate on it and the boat runs with a flat type attitiude.(plowing bow) Any help with prop size and any mods would be greatly appreicated. Thanks, rob
Westerly	posted 07-07-2004 10:04 PM ET (US) bump
jimh	posted 07-07-2004 11:06 PM ET (US) To assess propeller performance, the following information must be known: --Engine Speed --Lower Unit gear ratio --Propeller Pitch --Boat Speed Engine speed is measured by a Tachometer. Boat speed is best measured by a GPS with DGPS or WAAS enhancement. Take all measurements in water without current effects, in low wave conditions, and in very low winds. Provide a table of information of engine speed versus boat speed for several speeds, including wide open throttle. Provide the details of your current propeller pitch, diameter, blade type, and composition, and current engine maximum RPM and lower unit gear ratio.