What do you guys think.

[flipbro]

Ive got a wellcraft 200 elite 5.7 merc. With 2 people light gear and 120 liters of fuel. 4 blade 19 pitch alum prop 1.47 gear I run 49 mph at 4600 rpm. I figure its about 12.49% slip is that a decent number? Or should i try a 17 pitch

 

[fhhuber]

Well... you'd be reducing pitch appx 10% in an attempt to eliminate/reduce 12.5% slip

You'd have to significantly increase RPM to gain any speed.
Check what red line is for that engine.

I think you're looking at a lower top speed (before red line) with maybe a bit better hole shot if you make the change.
It might help if you tow multiple skiers at once or when the boat is loaded with more people/stuff.

I'd wait till I needed a prop due to wear/damage and then see about borrowing demo props to fine tune. I don't think you'll gain much if anything by changing.

 

[flipbro]

Well... you'd be reducing pitch appx 10% in an attempt to eliminate/reduce 12.5% slip

You'd have to significantly increase RPM to gain any speed.
Check what red line is for that engine.

I think you're looking at a lower top speed (before red line) with maybe a bit better hole shot if you make the change.
It might help if you tow multiple skiers at once or when the boat is loaded with more people/stuff.

I'd wait till I needed a prop due to wear/damage and then see about borrowing demo props to fine tune. I don't think you'll gain much if anything by changing.

I was thinking the same. And its a new solas i just purchased of iboats

 

[fhhuber]

main thing is...

What is the correct rpm range for that engine?

 

[flipbro]

The rpm range is 4800 rpm for my engine. My tac in dash was reading 5100 rpm. So i decided to wire in an auto tac its shows 4600 at 49 mph gps i believe to be more accurate. Im thinking 3 blade ss 19 pitch my get my rpms up and alittle more top end