Installing the electric motor
Two holes have to be drilled in the nose bulkhead to suit the motor you intend to install. Cut or file out
the front face of the cooling air intakes as shown in the photo.
Ensure that the cooling slots in the motor line up with the cooling air intakes in the fuselage nose. If
you are fitting a geared motor a sub-former should be installed under the motor itself. You may need
to trim the former to follow the inside shape of the fuselage accurately.
When installing a geared motor the 3 mm thick circular former must be fitted between motor and nose
bulkhead, otherwise the distance between fuselage nose and spinner backplate will be excessive.
The attachment of the push-fit nose cone requires two 5.6 mm Ø holes to be drilled through the nose
cone and the fuselage on both sides. The position of the holes is shown in the photograph; mark these
locations on the nose cone.
approx. 50 mm
approx. 12 mm
approx. 5.6 mm Ø
The retaining plates can now be glued in place; each consists of a strip of plywood and an M3 x 6
socket-head cap screw.
approx. 6 mm
2.4 mm Ø hole
Drill a hole in the two plywood strips for the M3 x 6 socket-head cap screws, positioned as shown in
the photo.
The plywood strips can now be glued in the fuselage, with the screw heads engaging centrally in the
5.6 mm Ø holes. They should not foul the edge of the holes.
The ply strips have to act as springs, and therefore they must not be glued over their full length
otherwise the spring effect will be lost. It is sufficient to fix them over a length of about 10 - 15 mm.
Open up the front of the nose cone so that the receiver battery can be slid into place. Slight pressure
on both screw heads releases the latches, and the nose cone can then be withdrawn and later re-
fitted.
Assemble the folding propeller following the instructions supplied with the set.
The final work on the fuselage is to drill the holes for the wing locating dowel and the retaining screw.
This is the procedure: drill a central 4 mm Ø hole in the fuselage for the locating dowel as shown in
the photo. The position can be seen in the picture; you may need to finish it off with a small round file.
The hole for the wing retainer screw should be drilled using the wing centre section as a template.
The nut for the wing retainer screw can now be glued in the fuselage.
The nut must be fitted in a piece of triangular balsa strip to allow for the taper of the wing section. Use
UHU plus for this joint.
Ensure that the narrow end of the triangular strip faces forward; note that you will have to trim this strip
slightly to obtain a close-fitting joint with the fuselage. Fit a screw from the top to draw the nut and the
strip upwards into proper contact with the fuselage. Important: don’t allow any glue to get onto the
threaded part of the nut or screw.
Fit a 4 mm Ø hardwood dowel in the hole in the leading edge of the wing centre section. Place the
wing centre section on the fuselage and engage the dowel in the locating hole. Set the wing centre
section at right-angles to the fuselage centreline. When you are confident of this, fit a drill through the
hole in the wing and continue the hole into the fuselage, taking care to hold the drill at right-angles to
the top surface of the wing. Here again a 4 mm Ø drill is required.
Installing the ON/OFF switch and charge socket
Install the ON/OFF switch and the charge socket in the fuselage side after filing out suitable
rectangular openings.
The wing
