propeller question force 75 hp

[zebbmann]

hello again. i had my boat out this past week and decided to let my son drive. well he hit a rock and tore up th prop. was looking for some thoughts on a replacement. currently i have a 10 3/8 with a 13 pitch. with 3 people runs about 30 mph on a 16 foot aluminum deep v. did some tubing with it also and it did well. all in all very pleased. i have done a few searches and i see mostly 14 pitch. anyone know if that will perform better or differently? thanks

 

[roscoe]

Re: propeller question force 75 hp

differently

better ?

worse ?

but differently.

 

[Frank Acampora]

Re: propeller question force 75 hp

Usually on a light tin boat you would use a higher pitched prop than on the same length heavier fiberglass hull. Without knowing the current RPM it is a difficult call. However, the difference between 13 and 14 pitch should not be so much that it will kill performance. If you can find a used inexpensive one to test, all I can say is: Try the 14 pitch.

 

[WaveJumpingMaxum]

Re: propeller question force 75 hp

so more pitch is more speed?

 

[roscoe]

Re: propeller question force 75 hp

COULD result in more speed, if it doesn't put too much load on the engine and drop the rpm's out of the recommended range.

 

[jerryjerry05]

Re: propeller question force 75 hp

Higher pitch could mean more speed but it will also mean higher gas usage.
Like Frank said.Need rpm at wot to insure correct prop.J

 

[zebbmann]

Re: propeller question force 75 hp

4900 rpms. top rpm for this motor is 5250.. i will probably go with the same prop but i just wanted some thoughts. does drag a bit when pulling a tube. a little slow out of the hole but planes quickly..