new to boats and just got a caravelle

[jeremymik84]

just bout a 96 caravelle 1750 se fish and ski boat with mercruise 3.0 and alpha one.. at 4200-4400 mph im only seeing about 30-32mph (although not fully trimmed up) the prop has a little nick on it and im going to replace it. it has a 19" x 14 1/2 3 blade prop on it now..im looking to get more top speed and get the RPM right at WOT.. i havent tried WOT yet because at 4400rpm its nowhere near WOT so im thinking its underpropped... any suggestions would be awesome...im new so im still learning

 

[jeremymik84]

sometimes i can get it up to about 35 while trimming up but i still havent tried at full trim up. im scared to go WOT because i dont want to over rev it and cause damage.. just trying to give as much info as i can

 

[Bondo]

sometimes i can get it up to about 35 while trimming up but i still havent tried at full trim up. im scared to go WOT because i dont want to over rev it and cause damage.. just trying to give as much info as i can

Ayuh,.... Yer lookin' for 4600/ 4800 rpms at Wot,.... A quick bump to 5000 won't hurt it,....

Or buy a 21" pitch, 'n hope she can pull it to 4800,....

 

[jestor68]

You use the throttle to control the rpm. Keep slowly advancing the throttle until you get it to full(4800) rpm. With the 19 pitch prop, I doubt if it will go much past that, considering the age of the boat.

Bear in mind that when you put more people in there, it will pull the rpm down some, so you want it to be near the top(4800) of the range with a light load in order to carry extra weight and do a decent job of pulling tubes, etc.