Adjusting Thrust Line and Trim on Micro Butterfly.

With the right thumb and index, hold onto the CF rod and base of the white plastic motor mount.

With left thumb and index finger, grab the motor, and now you will bend the white plastic motor mount a small amount towards the desired thrust line. Do a little bend and then eyeball it, test fly, and repeat as needed.

Down thrust is done in much the same way.

The Micro Butterfly usually needs a few degrees of right thrust and a fairly generous amount of downthrust too.

If you can't cope with a thrust line adjustment alone, look to other things on the model - the vertical stab, and wing alignment etc, and just bend those into shape until you can get the model flying just right.


The 4mm motor DD mount is glued on with medium viscocity CA if you ever need to re-attach it. The motor itself may or may not be glued in the sleeve of the 4mm motor DD mount, if it is not, you can slide it around where you like it for a small CG (Center of Gravity) adjustment

Check out this video that shows how to adjust the wing alignment, thrustline, and H-stab.
http://www.microflight.com/Videos/Micro-Butterfly-Videos/Micro-Butterfly-Trimming