Fstick8 Parameters - How to adjust CG and Return to Straight

[dennyf]

I'd like to be able to tweek a couple of the parameters on the fstick8 model. I have downloaded ParEditor and PlaneFieldEditor, but I can't figure out which ones to change.

I would like to be able to move the CG front and back, and to affect the model so it tends to return to "Straight and Level" after releasing the stick from a turn.

I have a real Slow Stick and it returns to "Straight and Level" much more than the Fstick8 model does. I'm hoping there is a parameter that will affect this.

Any help woul be greatly appreciated.

Thanks,

Denny

[ggunners]

Returning to straight and level is caused by the amount of dihedral in the wing and the effect of the roll inertia of the model.

Using ParEdit, reduce the roll inertia in the MAIN section. Then increase the dihedral angle for each main wing in the WING section of the .par. Say from 8 to 12 degrees dihedral.

Move the CG forward and backward using the CG portion of the MAIN .par section. It has an X=fore/aft component that moves the CG + forward and - backward.

-- ggunners

[dennyf]

Thanks for the tips!

I changed the dihedral from 8.0 to 10.0 and that seems to be a little more like the real slow stick for recovering from a turn.

I have been playing with the X value for CG and the Roll Inertia, but I'm not too sure what they are doing to the way the model flies.

What would be considered "big", "medium" and "small" changes for these params, and what effect would they have on the way the model flies?

I have to add 5-6 clicks of down trim to get level flight with about 80% throttle after calibration with the trim tabs centered. Is that normal/reasonable?

I'm using a Hytec Focus 4 transmitter with the Hitec 58318 USB adapter cable on Win XP Pro.

Thanks!

Denny