I'm not sure if this is the right area to post this but since it involves the prop, here goes.
I have a Leisure Cat 26 with a Mariner 225.
I have had intermittent problems with the prop breaking loose in light chop.
When it does, if I back off the throttle, it will hook up and go.
Trim seems to make no difference.
Smooth water in the river is no problem, but whe I get out in the bay with 1or 2 footers, it will sometimes break loose.
The prop is a 15 1/2 X 17P SS Mirage plus (3 blade)
On a twin engine cat, or monohull, I have read that the anti-vent plate should be just out of the water on plane.
With my hull, there is no way you could achieve that due to the wake from the sponsons coming out of the tunnel. To make matters even more interesting, my hull has a "pod" just forward of the motor, making an even more interesting wake situation.
I also suspect, I may be slightly over propped.
I get 5000 rpms at wot and about 36mph or so. WOT for my motor should be 5000-5500 I believe.
I'm not looking to gain any speed, just trying to eliminate the break loose problem.
Should I have a 4 blade prop in this setup?
The boat is 2 hrs away, but I will try to take some pictures of the current setup and post after the weekend.
__________________
I have a Leisure Cat 26 with a Mariner 225.
I have had intermittent problems with the prop breaking loose in light chop.
When it does, if I back off the throttle, it will hook up and go.
Trim seems to make no difference.
Smooth water in the river is no problem, but whe I get out in the bay with 1or 2 footers, it will sometimes break loose.
The prop is a 15 1/2 X 17P SS Mirage plus (3 blade)
On a twin engine cat, or monohull, I have read that the anti-vent plate should be just out of the water on plane.
With my hull, there is no way you could achieve that due to the wake from the sponsons coming out of the tunnel. To make matters even more interesting, my hull has a "pod" just forward of the motor, making an even more interesting wake situation.
I also suspect, I may be slightly over propped.
I get 5000 rpms at wot and about 36mph or so. WOT for my motor should be 5000-5500 I believe.
I'm not looking to gain any speed, just trying to eliminate the break loose problem.
Should I have a 4 blade prop in this setup?
The boat is 2 hrs away, but I will try to take some pictures of the current setup and post after the weekend.
__________________