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AILERONS

The strip ailerons/flaperons may appear to be rather flimsy and vulnerable to damage. The model proved them to be quite satisfactory though when test flown and were not mass balanced. Any damage is likely to occur if mishandled during transportation or rigging.

Cut out all the plywood aileron hinge brackets. These can be glued permanently onto the wing after covering the wing, but are used as an integral part of the aileron unit.

Cut a strip of hard 3mm balsa to the size of the aileron. Accurately cut and glue in the plywood inserts.

Fit a length of piano wire through hinge brackets and epoxy the wire onto the plywood inserts taking care not to allow glue to run into the hinge.

Cover the aileron with top sheeting. Sand to profile shape.

Note: Later Skyfoxes had a symmetrical profile. Add another lamination below the top two and make symmetrical if desired. It would make the ailerons stronger.

The rear section requires that the side frames be built up over the plan, then cross members added to make up a box section. Sheet the top and bottom areas for strength.

Accurately join up the front and rear fuselage sections over the plan. With the cabin floor or fuselage base flat on the board lift up the tail end by 84mm for correct alignment. Allow glue to set thoroughly.

Complete the sheeting under the tank area and planking between F1 and F2.

Mount the engine either on blocks or directly on firewall with radial mount. Trial fit fuel tank, fuel lines and throttle cable.

Build up engine cowl from balsa blocks and planking. Cut away air intakes and underside opening for flow through cooling. The top cowl half is removable for access to engine.

Make up the door frames, one side or both should be removable for access to radio gear. Complete the tubular cockpit framing, and build up top cover rear of the cabin.

These are built up flat over the building board. Round off edges, bevel the leading edge of control surfaces. Fit hinges and control horns to suit, as well as the elevator joiner.

Note there is a gap in the fin for the tailplane to pass through. Leave the top of this gap open when covering. Also pay attention to fabric covering from fuselage to tailplane section. See cross section on plan.

Bend the tailplane struts and check fitting. Fix permanently in place after covering.