Great Planes Ultimate Biplane 40 Kit - GPMA0240 - Manual (Page 11)

D 3 Draw a centerline on the LE of the stab and fin and on
the TE and tip of the elevators and rudder Sand a radius
on the edges as shown on the plan using the centerline as
a guide to keep the radius symmetrical Do not round the
TE of the stab or fin.
HOW TO CUT A GROOVE FOR A TORQUE ROD
A. Use a hobby knife to sharpen the inside of a piece of
1/8" brass tube Roll the tube as you carve the end.
D 1 Position the stab and elevators over the fuselage top
view Mark the location of the elevator joiner on the elevators.
B. Use the sharpened tube to carefully gouge the leading
edge You II have to make several passes to make the
recess deep enough for the torque rod.
D 2 Drill 3/32" pilot hole into the elevator LE, on the
centerline, at the torque rod marks As you drill the holes
keep the drill aligned with the top and bottom surfaces of
the elevator Enlarge the holes with a 1/8" drill bit.
D 3 Cut a 1/8" groove in the leading edge of both
elevators to recess the joiner wire (see expert tip that
follows) Do not glue the joiner wire in position at this time.
D 1 Position the rudder over the plan and align the
tailwheel bracket over the rudder Mark the tailwheel
bracket "arm" location on the LE of the rudder. Drill a 7/64"
hole, 3/4" deep at the mark.
D 2 Cut a groove from the tailwheel bracket hole to the
bottom of the rudder that will allow the nylon tailwheel
bearing to fit flush with the LE of the rudder Do not glue
the tailwheel bracket in at this time.
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