User Manual

21
Twin Otter ARF Assembly Manual
􀀀 􀀀 Step 6
Use the holes in the cowling to drill mounting holes
in the nacelle using a pin vise and 1/16-inch drill bit.
Remove the cowling and apply a small drop of thin CA
to each of the mounting holes in the nacelle. Allow the
CA to cure without using accelerator.
􀀀 􀀀 Step 7
Use a 5/64-inch drill bit in a pin vise to enlarge the
mounting holes in the cowling.
􀀀 􀀀 Step 8
Use a #1 Phillips screwdriver to install the cowling
with four #2 x 1/4-inch woodscrews.
􀀀 􀀀 Step 9
Slide the prop adapter onto the motor shaft then install
the spinner backplate and propeller. Use the shaft of
a hex wrench to tighten the propeller nut. Secure the
spinner cone using a #1 Phillips screwdriver and the
screws provided with the spinner.
2-Stroke Installation
Parts Required
Wing panels (left and right)
Micro servos with hardware (2)
9-inch servo extension leads (2)
Engines (2) Radio
Throttle pushrods (2) Clevises (2)
Silicone keepers (2) Engine Mounts (2 sets)
Fuel tanks (2) Hook and loop strap (2)
Cowlings (2) Firewall drilling template
#4 steel washers (16) #8 steel washers (8)
6-32 blind nuts (8) 4-40 nylon lock nuts (8)
4-40 x 1-inch Allen head machine screws (8)
6-32 x 1-inch Allen head machine screws (8)
Tools Required
Ruler Pencil
Felt-tipped pen #1 Phillips screwdriver
Pliers Drill motor
Tapered reamer Thin CA
3/32-inch hex wrench 7/64-inch hex wrench
Round le Low-tack tape
Dental oss Threadlock
Sidecutters Needle-nose pliers
1/4-inch wrench
Drill bits: 1/16, 11/64, 5/16-inch
Rotary tool with cutoff wheel and drum sander