minicopter Diabolo 2018, Manual

Page: 64 / 64

front. Remove the silicon tubes from the spacers (D39) to get more space for
the battery mounting tape that fixes the Lipos onto the battery plate
(D155). The fit of the rail must be very close, within 0.1-0.2mm sideways
and vertically. This can be adjusted either through sanding or filing the
battery plate a little bit or thru 0.1mm washers (475) between the upper and
lower frames.
Before you mount the eyelet (D156) onto the battery plate (D155) you must
check first for the best position of the battery. The C of G should be
exactly under the mainshaft. To get the greatest range of possible positions
on the battery plate, different holes are available to allow for the best
position possible of the battery. After finding optimal battery location,
the eyelet D156 is fixed in the best position with two countersunk screws M3
x 8 (D95).
For mounting the battery onto the plate (D155), a mountain bike inner tube,
cut into roughly 25mm wide rings is an excellent solution. The dampening is
excellent, it is very elastic and the battery cannot slide. Finally the
fixing bolt (D157) is pushed through the frames and eyelet and locked in
position with a cotter pin (60).
38. If you use an electronic pitch gauge you should support two blocks under
the frame so that the skids are free in the air and the model is leveled
horizontally. If you use a "Bevel-Box" you can use the large and flat heads
of the blade screws for magnetic mounting of the box.
The stall angle of a symmetrical airfoil is about 27°. You should ensure
that the sum of collective and cyclic pitch that you use will be under this
limit. This is also valid for the tailrotor! For hard 3D-flight more cyclic
than collective is recommended, i.e. 12° collective and 14° cyclic. For
speed flight you should choose the converse i.e. 16° collective and 8°
cyclic. The mentioned values are recommended maximum values so generally you
should follow the recommendations from the manufacturer of the flybarless
controller.