Re: liberator 211 rework
If you have the power, you want to come out of the hole with the drive-IN...............not all the way in, but not where it runs most efficiently at plane.
You cannot go by the (trim) gage because
#1. it will change with load and the position of the load (where every one sits) and,
#2. it will change with speed.
#3. The adjustments will need to be made by feel, RPM, and speed.
I usually end up "bumping" the UP button multiple times once it's up on a plane and making slight adjustments when I get to the throttle setting I'm going to run at. The gage is not accurate enough to return to the same place so I do it every time I come up on a plane.
Experiment with trim settings at a constant speed/RPM.
You can easily tell if it's too "high" or "low" and the bow position (too high or "plowing" etc)
You probably have a 1.5:1 drive ratio. (you'll need to determine it by the way....I.E.... 15 engine revolutions to 10 prop revs......or 1.5 engine:1.0 prop etc......)
Depending on what model engine you have, 5.7L 5.7LX, At WOT (Wide Open Throttle) it should turn 4200-4600 RPM or 4400-4800 RPM respectively.
Ideally, you want to "Prop" (pitch) the drive so the engine turns at the highest RPM (4600/4800 ) @WOT when loaded at the weight you will operate regularly.
I.E, throw 4 regular sized adults in the boat and run it wide open and see if it turns 4600/4800. Then note the speed. You won't be running at WOT all the time but all marine engines have a WOT
rating to determine prop pitch, drive ratio etc.
You probably have a 17-19 pitch prop on it now?
You can use a
Prop Slip Calculator to get an idea what the boat should do. Use 12-15% slip for a single drive single prop planing type run-a-bout.......
