What size prop do I need?

[Rare Air King]

I have a 1987 17' Fabuglas fish/ski with a 1980 Mercury 1500 on it. I usually just ride and pull tubes/wakeboards. Just bought the motor, and it has a 15p prop, I believe is obviously not suited for my boat/usage. Any suggestions?

 

[Dakota47]

Re: What size prop do I need?

17p would work better but check with the merc guys.

 

[jerryjerry05]

Re: What size prop do I need?

You need to test your boat and see what RPM are at WOT. Your motor should run 5500-6000rpm at wot.
Your boat at 17ft and 150hp should probably have a 19 or 21p
The 15 is great for hole shots but in the long run will damage your motor.
Do the test and come back with the results.Jerry

 

[Rare Air King]

Re: What size prop do I need?

Thanks for the advice, guys. I am in the process of hooking up my tach. I recently swapped motors and the tach never worked, but I'm hoping that I can get it working.