Prop advice

[wilbur1]

I have a 115atlss with a 13 7/8 x 21 prop it turns 5900 rpm with 3 people and no extra weight. With 4 people 800# livewell full and 15 gals fuel it went 5400 rpm. I was thinking trying a 13 7/8 x 19 with the extra weight. Will this bring me up to 5800rpms. Your thoughts please. Thanks

[Moonlighter]

First check your engine height.

Have a read of the "sticky" thread at the top of the forum that talks about selecting props, and engine height and its impact on performance. Some good info there that will help answer your question.