Sorry Rob2160, I overlooked the "(disregarding flaps)".

In my defence, my JayTee, like the Jetmach we were discussing, is most reluctant to land without flaps. With idle power they just float and float and float......

You are also right that most modellers do not constantly retrim, because we seldom fly jets straight and level for more than a few seconds. We are constantly turning, looping, rolling etc. The only times when it pays to be in trim "hands off" are<ul>[*]on climb out[*]On a fast low pass[*]on a slow low pass (1/2 flap)[*]on approach[/list][I remember my instructors on Chipmunk or Pa28 were always saying "take your hands off" to check whether or not I had trimmed. Do you do that?]

I try to take off in trim for a safe climbout. I then add down trim to trim out for fast straight and level flight, which covers the fast pass and does for all the aeros.
When I back off the power for slower flight at circuit speed I retrim by adding a little up trim. Thistrimmeans that if I go to full power it will climb, if I go to idle it will descend (as I'm sure we all know).

Now I come back to the point I made earlier. When I put down takeoff flap I mix in enough elevator so that the nose comes up very slightly to trim at a slower speed, and when I put in land flap I mix enough elevator so that the model is in trim at approach speed. I don't trim out ALL the pitch-up-with-flap. I leave a little of the pitch up again so that ity is trimmed to approach slowly and land. Then I leave the trim there for the next takeoff. On full power with that trim it will climb out in trim with T/O flap, or even flapless.
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