Hi, me again
When evinrude do the performance test, they do that with different prop and they put in the report the best possible set-up ?
In my case it's the test with the larson fx 1850 with the 150 ho g2. In the report the use the rebel prop 15.5 x 17. So I cant go wrong with that prop or I can get better performance with the 4 blades model ?
If I choose the four blade do i keep some pitch / diameter?
Performance reports are done by Evinrude application engineers and they test different propellers and engine heights to find the best all around propeller for that particular boat on that particular day. The prop may not be the fastest, but may have the best features for cruising economy, acceleration, with an acceptable top speed. Think of the published prop as a starting point.
Propping is comprised of trial and error plus they are testing brand new boats often without many accessories, t-tops, side curtains, etc. that are installed by the owners. It does not hurt to try different prop styles and sizes to find one that is best for your type of boating.
"There is never just one thing wrong with a boat";
-- Travis McGee, main character in a book series by John D. McDonald
The factory recommends that a properly trained technician service your Johnson or Evinrude outboard motor. Should you elect to perform repairs yourself, use caution, common sense, and observe safety procedures in the vicinity of flammable liquids, around moving parts, near high-temperature components, and working with electrical or ignition systems.
The information offered here is only general in nature and should not be construed as complete factory approved procedures, techniques, or specifications. Always use the proper service manual for your motor, up-to-date service literature, the correct tools, and have an understanding of how to proceed with troubleshooting and repair methods. If you are unsure or uncomfortable with a procedure, a situation, or a technique, enlist the services of a factory trained technician.