Took the new tender
out for its first run yesterday with just me onboard.
When I open her up the bow points to the sky, it accelerates well but just as it hops on the plane there is a massive amount of cavitation around the prop before biting in and off she goes up to 25 knots
in what I would consider to be normal trim for a 4m tinnie with a 2 stroke
20hp on the back.
From stopped and powering up into a strong breeze, she bogs down, bow pointing to the sky, wouldnt get on the plane, initially making me think there was a throttle problem but as soon as I turned and headed downwind, she accelerated like a madman, cavitating again at about half speed. Once on the plane I of course turn and continue up into the wind
Shifting 25 litres of fuel
to the front of the boat (was at transom) helped dramatically with its behaviour (less sky pointing) but the cavitation was still happening on powerup and this is the issue.
The prop while generally appearing to be in good shape, does have some burs and is not sharp on the "cutting" edge. Could this be the problem?
Perhaps I have the wrong prop?