Do cavitation plates really work?
Do cavitation plates really work?
They help prevent against “blow out” when taking off shallow. Plates with wings can help boats track better when running. Different boats will see varying improvements depending on the type of boat. Tunnel hull boats usually see the most dramatic performance increase from cavitation plates.
Should the cavitation plate be level with the bottom of the boat?
it depends on the boat… on a speedboat where the transom and bottom meet at a sharp angle, and the bottom of the boat at the transom is always in contact with the water when underway, the cav plate only needs to be level with the bottom of the boat….
Where should the cavitation plate be?
The cavitation plate should be nearly even with or slightly below the bottom. For a short shaft the vertical measurement of the transom should be about 15 inches.
How do I know if my prop is Cavitating?
If you can feel vibration and your propeller has visible pitting, you have cavitation and you probably need professional help. If, however, your engine is over-revving you have a ventilation issue and this is usually something you can fix yourself.
Do outboard foils work?
Adding a hydrofoil to an outboard does provide a performance boost much of the time. The smaller the boat the more significant the impact is, especially on boats that don’t have trim tabs.
How do you know if your outboard is too high?
If it’s too high, the propeller tends to ventilate, losing its bite on the water and blowing out while turning and in steep seas. “If the prop consistently ventilates when heading down a steep wave, the outboard is probably set too high,” says Dean Corbisier, advertising and public relations manager for Suzuki Marine.
How far below the hull should the prop be?
If you have a short shaft motor, the top most part of the transom and the lower most part of the boat should be about 15 to 16 inches. For a long shaft, I think 20 to 21 inches is correct. Some mornings it just doesn’t seem worth it to gnaw through the leather straps.
How do I know if my boat is Cavitating?
Common Cavitation Problems/symptoms:
- Motor revs higher & noise level increases sharply but speed decreases.
- Motor could be trimmed too high, for the conditions or when transitioning to get onto the Plane.
- Disturbed/aerated water from the hull hitting the Propeller,
What causes outboard cavitation?
Cavitation could be caused by badly placed transducer or through hull fitting. A hollow in the hull (also called a hook in the hull), worn/bent Propeller. From initial start – to get onto the plane, the engine seems to rev a lot but the boat stuggles to get up on the plane, you could have cavitation ventilation issues.
How can propeller cavitation be reduced?
Means of Avoiding Cavitation
- Increase the total blade area and thus the thrust per unit area of blade surface for the same total thrust.
- Reduce the blade angles and angle of incidence by adopting slightly larger diameters.
- Vary the pitch over the length of the blade in order to diminish the loading in critical regions.
