Trojan Boat Forum

need to find engine sync advice for 2000 rpm boat speed ....330 Excalibur PCM fuel injected

Listen to the sound of the props in the water..... adjust one engine up and down say 200 rpm from matched speed and observe the changing sound, you will soon understand the spot where the props are in sync..... it just sounds right!

It's harder to synch around that RPM as you are just climbing or trying to stay on plane... the engines are fighting a that point so minor throttle adjustments can lead to bigger changes in engine speed than planned.

To expand on what Ready said.... listen for a 'droning' sound... If you hear a kind of 'wah wah wah wah' sound that is the result of a difference in the frequency from each engine. The faster the 'wah wah wah wah', the bigger the difference in engine speed. The slower, the closer they are to each other. If you can get the 'wah wah wah wah' to slow down enough and stop, you are totally in synch!

captainmaniac wrote:It's harder to synch around that RPM as you are just climbing or trying to stay on plane... the engines are fighting a that point so minor throttle adjustments can lead to bigger changes in engine speed than planned.

To expand on what Ready said.... listen for a 'droning' sound... If you hear a kind of 'wah wah wah wah' sound that is the result of a difference in the frequency from each engine. The faster the 'wah wah wah wah', the bigger the difference in engine speed. The slower, the closer they are to each other. If you can get the 'wah wah wah wah' to slow down enough and stop, you are totally in synch!

Don't know if you are into music, but if you ever tuned a guitar, or other relative stringed instrument, this is similar to that effect.

It's easy. The wah wah wah wah is like a day at work. The steady wah is a beautiful day on the water. As Mike says........music.

will give that a try...thanks