Griffon 2000TDX - 1/10 scale
Mark the plywood disc as shown on diagram H and use it to mark the
positions of the elevators onto the duct. Cut the elevators from
3mm thick, 25mm wide balsa. Sand the leading and trailing edges to
a rounded profile. Glue the elevators in place. Note that the
elevators are fixed on the model and assist in retaining the shape
of the duct.
Cut out the two rectangular plywood motor mounts. Bolt the motor to
the mounts, fit the propeller to the motor and trim the plywood mounts
until a snug fit is obtained and the propeller can turn without touching
the duct. Do not trim the propeller.
Glue the plywood motor mounts to the duct inner wall with epoxy resin.
When this has become tacky, check that the propeller is still free to
turn and reinforce the joints with tissue soaked in epoxy resin.
The rudders should be cut from 3mm thick, 60mm wide balsa. One rudder
is placed vertically in the central position, and the other two are
placed 50mm from the central rudder. The rudders should be cut to
match the width of the duct at the point where they fit.
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| Motor, rudders and elevators. |
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Copyright © Mark Porter 1994, 2006