Tilt and trim

[have boat will travel]

I am new to boating can anyone explain what are the tilt and trim are for?

 

[Moody Blue]

Re: Tilt and trim

This is my understanding.

Trim is the ability to finely adjust the angle of the drive relative to the boat to adjust how the boat rides in the water, ie raise or lower the bow.

Tilt is an extended TRIM function where the drive is elevated to a height out of the water to allow for transport.

 

[Boatist]

Re: Tilt and trim

I agree with moody.
Trim is to adjust the boat attitude under power. Trim is how you raise and lower the bow to stop it from plowing or to prevent a bow high postion. Trim in or down to lower the bow. Trim out or up to raise the bow. Adjusting the trim will greatly affect your ride and also saftey and fuel mileage.

Tilt is to raise the out drive up out of salt water or to make sure motor or out drive does not hit the ground when the boat is on the trailer. Tilt is not to be used under power.

 

[tashasdaddy]

Re: Tilt and trim

every boat hull is different. they are built to ride at a certain angle to the water(Plane), the adjustment of the tilt ( angle of the motor to the transom), is used to achieve this optimum angle of the hull. it takes experimentation, of slight movement of the motor to find this "sweet spot". the sweet spot also changes with different loads in the boat.

 

[5150abf]

Re: Tilt and trim

heres my attempt to explain this.

The prop always pushes the motor in a straight line, tilt trim allows you to adjust which way the thrust is pushing on the boat.

When you tilt the engine down the prop is effectively pushing up on the back of the hull, making the nose or bow of the boat go down, when you trim up the prop is pushing up on the hull making the bow rise.

Where you trim the engine depends on what you are doing, generally when you start out from a stop you want to be trimmed down to keep the bow from rising to much and as you gain speed you continue to trim the engine up.

Eventually you will hit a spot where the prop blows out or cavitates,your RPMs rise but the boat slows, essentially it losses it's grip on the water, simply trim down till it "bites" again then back up just a bit.

You will find a sweet spot somewhere that gives you the correct RPM and top speed.