Jack Plate on motor

ssmith36

Cadet
Joined
Jul 31, 2011
Messages
28
Ok, I'm posting this for a friend I work with. He recently purchased Ranger boat with 150 horse Johnson outboard. He is wanting to know how to adjust the "jack plate" up or down in order to get the boat to plane out. Please excuse me if this question seems odd. But I thought I've had such good responses from everyone here thought I'd give this a whirl.
 

Philster

Captain
Joined
Sep 15, 2009
Messages
3,344
Re: Jack Plate on motor

To get on plane, the motor starts out at it's lowest jackplate position, but it is possible the optimum starting position is somewhere above that, but only practice can determine which best, but it's not going to be one of the highest positions to get on plane. Once on plane, the motor can be raised vertically such that the prop is still chopping the water, but some part of it is surfacing for maximum, all-out straight-line speed.

At this point, there is almost no serious handling left and the Ranger is a flat rock skimming across the water.

Generally, be it a jackplate or power tilt/trim, you start low and get on plane, then raise the engine to get the prop up in cleaner water, which removes load from the engine. Good for engine; good for economy.

There is a point where the prop loses bite or blows out. Have to know where this is, and have to know what is safe and what is not.
 
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