advanced scale models P-61 Black Widow Assembly Instructions Manual - Page 6

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STEP 8: INSTALLING THE MAIN LANDING GEAR

iMpoRTANT This step details the installation of the included fixed main landing gear. If you will be installing retractable landing
gear, please skip ahead to page 13.
STEP 9: INSTALLING THE COWLINGS
❑ Test-fit and cut out each cowling for your engines and mufflers. When aligned properly, the back edge of each cowling should overlap
the firewall 1-1/4" (32mm). For our four-stroke engine installation, we routed the mufflers out the bottom, center of each cowling.
❑ Install your rudder servos into the servo trays. Notice the position of
the servo output shafts. They should be toward the back of the fuselage.
❑ Make a Z-Bend in the pushrod wires and connect them to the servo arms.
❑ Glue the front of the pushrod guide tubes to the bottom of the wing
mounting support bulkheads.
❑ Install one plywood mounting plate onto the landing gear mounting
rails in each fuselage boom, using the eight large wood screws provided.
The front edge of each mounting plate should be 3/4" (19mm) behind the
front bulkhead.
iMpoRTANT There is one right and one left mounting plate. Make
sure that you install each mounting plate so that the predrilled hole in
the landing gear mounting slot is toward the inner mounting rail.
❑ Drill a 13/64" diameter hole through the landing gear mounting rail,
using the predrilled hole in each landing gear mounting slot as a guide.
❑ Insert the landing gear wires into the mounting slots and secure them
into place, using the four landing gear mounting straps and eight small
wood screws provided.
iMpoRTANT The coil in each landing gear wire should be toward
the back of the fuselage booms.
❑ Install the wheels, using the two wheel collars and two machine
screws provided.
❑ Install three cowl mounting brackets onto each fuselage boom, using
the six smaller wood screws provided. Make sure that the brackets are
flush with the fuselage boom sides and that the U-Shaped side is toward
the outside.
iMpoRTANT Position one bracket at the 2 O'Clock
position, one bracket at the 8 O'Clock position and one
bracket at the 4 O'Clock position.
6
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