2007-10-27 14:09:47 · 4 answers · asked by a p 2 in Cars & Transportation ➔ Boats & Boating
http://continuouswave.com/cgi-bin/propcalc.pl
This is the coolest place to get that info. You just key the info and it tells you what you need.
2007-10-27 14:46:13 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Check your RPM when you are running all out. If it below rated RPM you need less pitch or less diameter. If it is over the rated RPM then you will need more pitch or more diameter. You are usually limited to how much diameter you can go, so normally you will go with more pitch. You can also decrease RPM by cupping the existing prop that is on the motor. The pitch on the prop you have can also be change saving you a little money. If I remember correctly I believe it can be changed up to 2 inches. So if you have a 17 inch prop it can go to a 19.
2007-10-28 02:59:30 · answer #2 · answered by wildfire78 2 · 0⤊ 0⤋
I assume you will have 2 engines. Somewhere around 15x19 or so. You need to take boat parameters to dealer to discuss you use of boat, do you want speed , hole shot or economy? You need to decide between 3 and 4 blades, steel or aluminum or composite. You can always change if it is not quite right.
2007-10-27 15:09:25 · answer #3 · answered by landfall43 4 · 0⤊ 0⤋
If 1 engine 15 pitch If twins 17p>>5800 rpm wide open>>
2007-10-28 04:12:36 · answer #4 · answered by 45 auto 7 · 0⤊ 0⤋