50hp us marine motor angle??

[bayliner1986]

I have a 50 hp us marine motor on a 14 ft bayliner. does anyone know what angle the motor should sit on the shaft?? Up and down etc?? and what hole the pin should go in to hold the motor at the correct angle??

 

[Bondo]

Re: 50hp us marine motor angle??

I have a 50 hp us marine motor on a 14 ft bayliner. does anyone know what angle the motor should sit on the shaft?? Up and down etc?? and what hole the pin should go in to hold the motor at the correct angle??

Ayuh,... Whichever setting works for You, 'n yer Boat...

 

[Frank Acampora]

Re: 50hp us marine motor angle??

You start with the engine set so that the plate above the propeller (cavitation plate) is parallel and even with the bottom of the boat. Run the boat. Then you move the pin to set the engine tilted out and in -- you must experiment to find the best angle. Tilting the engine in will lower the front (bow) of the boat and tilting it out will raise the bow.

Finally, when you find the best angle, you can try raising the engine up one inch on the transom. This will put the cavitation plate about one inch above the bottom of the vee in the hull. If you find that the engine now cavitates--gurgles, prop spins faster, and boat loses speed-- lower the engine bact to where it was originally.

Again, it varies from boat to boat and engine so you must experiment.

 

[5150abf]

Re: 50hp us marine motor angle??

Yup, with manual trim you need to find one possition that works for every situation so whatever setting you end up with will be a compromise most of the time, it does take quite a bit of fooling around to get just the right set up.

Engine height can make a huge difference in speed and handling, as Frank said get it as high as possible without cavitating, run through a few tight turns before locking it in, alot of times the engine will cavitate in corners but be fine on straights.

The one option you have is an aftermarket tilt trim like a CMC, you can get them here at iboats but they are a bit salty, @$500.