I bought a mercury classic fifty 45 HP short tale. I raised the engine 22 millimetre on the transom, it’s the maximum height when using the original transom protection plate for the engine clamps.
I went on the water yesterday. The maximum speed was 48km/h (gps). But the water on the back of the boat was kind of wild, the water spray up a bit. Maybe it was because the engine wasn’t trim well (it was parallel to the transom).
But I wonder how low the propellor should be measured from the bottom of the transom. The center of the propeller is 20 cm deep right now and looks a bit deep, but maybe I am wrong?
In the photo below I placed the actual heights now. Should I place the engine higher? Or should I eliminated the spray only with the trim degree of the engine?
Looking forward to your answer.