robjen1019
Petty Officer 1st Class
- Joined
- Apr 18, 2007
- Messages
- 257
19ft cuddy, 150 hp volvo, 290 outdrive, Propeller is a short hub 14 inch x 19 pitch propeller. Boat is running 5100 rpms with this prop.
The prop that was on the boat, was the same as the one listed above. It had some serious Cavitation damage at the base of the blades on the hub. Looks like it has been sand blasted. I put a new one on, and it is starting to do the same thing.
I run the drive trimmed where it gives me the fastest speed, which happens to be at the 0 mark on the indicator reading. If I trim down, the boat starts to pull to the right really hard. If I trim up too much more, it starts to raise the bow and then rev high.
Ive never had a boat with trim so I assumed that I should run at the setting that gave me the best speed, and "felt" right.
Im doing something wrong and Im not sure what. The drive will take a longer hub prop which would give me a better bite. Im wondering if the prop is not getting a good enough bite in the water and this is causing the Cavitation.
Any ideas would be much appreciated.
Thanks
The prop that was on the boat, was the same as the one listed above. It had some serious Cavitation damage at the base of the blades on the hub. Looks like it has been sand blasted. I put a new one on, and it is starting to do the same thing.
I run the drive trimmed where it gives me the fastest speed, which happens to be at the 0 mark on the indicator reading. If I trim down, the boat starts to pull to the right really hard. If I trim up too much more, it starts to raise the bow and then rev high.
Ive never had a boat with trim so I assumed that I should run at the setting that gave me the best speed, and "felt" right.
Im doing something wrong and Im not sure what. The drive will take a longer hub prop which would give me a better bite. Im wondering if the prop is not getting a good enough bite in the water and this is causing the Cavitation.
Any ideas would be much appreciated.
Thanks
