Originally Posted by reinier
Without a console you should try a 15" pitch for best all round and 16" pitch for max. top end, but with less acceleration power.
With a console you should stick to 15" pitch.
Considering you don't know which model
Yamaha 40 is on there you seem to be awfully quick to give advice.
Mine ran a 10 3/8x14" on a Mariner 50 and made 44mph (GPS was in MPH only) No wind, slack water. Centre console, 50 litres of fuel aboard. No rev reading as didn't have a tach fitted but it wasn't as quick onto the plane as I'd have liked with 3 people onboard.
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