RE: Magic Formula 3D
My Formula with a Saito 91 with a heave APC15x4W prop,
still needed a 1700 5 cell nicad ( 6 1/2 oz pushed to the firewall)
and alloy spinner to get the CG to 110.
Fitted wire pull pull on the rudder to save weight, as the OEM piano wire for the pull pull
is way heavy.
but she is such a beauty to fly
My all up-weight is 5lb10oz,
Xup