Hangar 9 Twist 40 ARF Version 2 - Manual (Page 9)

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Section 8: Engine Installation Section 9: Throttle Pushrod Installation
Required Parts
Fuselage assembly • Engine mount •
4mm x 20mm screw (4) • 4mm washer (4) •
4mm x 25mm screw (4) • 4mm lock nut (4) •
Required Tools and Adhesives
Drill • Drill bit: 11/64-inch (4.5mm) •
Engine • Pliers •
Clamp • Phillips screwdriver (large) •
Step 1
Attach the engine mount to the firewall using four
4mm x 20mm screws.
Step 2
Position the engine on the mount. Adjust the engine so the dis-
tance from the firewall to the drive washer is 4 1/4-inch. Use
clamps to hold the engine in position.
Step 3
Mark the locations for the engine mounting bolts.
Step 4
Remove the engine and drill the locations marked in the
previous step using a 11/64-inch (4.5mm) drill bit.
Hint: Use a drill press for the best results. This makes holes
perfectly perpendicular (square) to the mount.
Step 5
Attach the engine using four 4mm x 25mm socket head
screws, four 4mm washers and four 4mm lock nuts.
Required Parts
Fuselage assembly • 10 1/8-inch (260mm) outer •
pushrod tube
Clevis • 14 5/8-inch (370mm ) •
pushrod wire
Clevis retainer •
Required Tools and Adhesives
Drill • Drill bit: 5/32-inch •
Medium CA • Sandpaper •
Step 1
Determine the proper location for the throttle pushrod. Mark the
location with a felt-tipped pen. Remove the engine and drill the
firewall for the pushrod tube using a drill and 5/32-inch drill bit.
Step 2
Test fit the throttle pushrod tube through the firewall, through
former 2, and into the fuselage. Once satisfied with the fit,
roughen the tube using sandpaper. Slide the tube back into
position and use medium CA to glue it to the firewall and
former 2. Allow 1/4-inch of the pushrod to extend forward of
the firewall.