variable pitch for AFP, i know how !!
Yes for AFP
Ok, it isnt real variable pitch but it still works great
Download a AFPD shockflyer and convert to AFP, simply by changing the notepad file from xx .8. xx to xx.6.xx, now it will work for AFP, turn on AFP, go into edit aircraft, change:
Give max deflection on ailerons and max prop wash
put on the smallest possible prop and convert it from 3 cell to 10 and save
now just fly! The variable bit works when you give full power and full ailerons, this will work if you are inverted ( pointing down) and even if you do it pointing foerward ( strait and level) in both cases you will go backward, and if hovering inverted you can juggle the throttle till it stays an inch off the floor.
Enjoy
Martin