"Joe" wrote in message ...
"basskisser" wrote in message
om...
"Joe" wrote in message
...
Now for trim tabs. Great for slow planing but will kill fuel economy
doing
so. They create a lot of drag to force the bow down at slower speeds.
Of
course you can raise them and get the efficiency back.

I've found the opposite to be true.

Really, JoeTechnician? Please do tell how you think that trim tabs
don't create drag when they are deployed?
and in And, if they are creating drag, unfortunately, they are also hurting
fuel economy.

Who said they didn't create drag?

But, if the drag they do create is less than the drag they reduce (stern
dive, pushing a wall of water against the bottom of the hull), and
inefficient prop angle (wasted energy pushing the bow up instead of the boat
forward) then the overall decrease in drag will result in increased fuel
efficiency.

****, here we go again, JoeTechnician, I even have to explain what to
hell YOU responded to. Read the second sentence of the original post:
They create a lot of drag to force the bow down at slower speeds.
Of course you can raise them and get the efficiency back.

At slower speeds, they definately DO create more drag. AT SLOWER
SPEEDS, get it? You are plunging a planar piece of material, at an
angle, into the water. Do you think that is creating drag, yes or no
please. Now, that in turn, pushes the bow down, again, we are AT
SLOWER SPEEDS. So, you are essentially putting more of the hull in
contact with the water. Do you not think this, AT SLOWER SPEEDS,
creates drag? Yes or no, please.