I've got a J16 Carolina Skiff with a 1996 25 hp Evinrude (bought used together).
I spun the hub and took it to the local prop shop for repair. The aluminum prop was originally 10 x 15 but they recommended re-pitching it to 10 x 13 with a light cup.
Since they changed it, however, I've lost speed and it seems to maybe be cavitating at just under WOT. I don't have a tach or speedometer (hey - it's a basic just for fun boat used in the Intracoastal - no frills here!) but I estimate it used to run about 25mph and has probably dropped down to about 18-20 mph. Just for comparison, I was running along side a friend's same size Boston Whaler with a 15 hp with equal gear and passengers and could just keep up. The boat itself is supposed to weigh about 600-650lbs and 99% of the time its just 2 of us (slightly over 300lbs soaking wet combined), a cooler and basic gear.
How do I find out what the prop really should be on this rig. I'm looking for some better speed and performance
Thanks,
Mike
I spun the hub and took it to the local prop shop for repair. The aluminum prop was originally 10 x 15 but they recommended re-pitching it to 10 x 13 with a light cup.
Since they changed it, however, I've lost speed and it seems to maybe be cavitating at just under WOT. I don't have a tach or speedometer (hey - it's a basic just for fun boat used in the Intracoastal - no frills here!) but I estimate it used to run about 25mph and has probably dropped down to about 18-20 mph. Just for comparison, I was running along side a friend's same size Boston Whaler with a 15 hp with equal gear and passengers and could just keep up. The boat itself is supposed to weigh about 600-650lbs and 99% of the time its just 2 of us (slightly over 300lbs soaking wet combined), a cooler and basic gear.
How do I find out what the prop really should be on this rig. I'm looking for some better speed and performance
Thanks,
Mike