21
INSTALLING THE PROPELLER
q
5) Using a modeling knife, carefully cut out the
two molded air ducts in the sides of the cowl. See
photo # 30 below.
Photo # 30
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6) Slide the cowling over the motor, but do not
install it at this time.
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7) Install the two folding propeller blades onto
the propeller hub using two 2mm x 12mm smooth
shank machine screws. The screws slide through
the larger holes in the hub, through the propeller
blades and thread into the smaller holes in the hub.
See photo # 31 below.
Photo # 31
Do not overtighten the two screws. Overtight-
ening them can cause the propellers not to fold
back properly. Check to make sure they fold easily.
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8) Insert the tapered hex nut into the propeller
hub. The tapered side of the nut (larger inner diam-
eter) should face the back of the hub.
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9) Carefully push the threaded adapter onto the
motor shaft. Slide the adapter on until the back edge
of the adapter is flush with the knurls on the motor
shaft. See photo # 32 below.
Photo # 32
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10) Slide the hub assembly over the threaded
adapter. Install the washer and the propeller nut.
Tighten the nut snug, but do not overtighten it.
The threaded adapter is machined from light-
weight aluminum. Overtightening the propel-
ler nut can damage the adapter.
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11) Slide the spinner cone over the propeller
blades and onto the hub. Secure it in place by thread-
ing one 2mm x 12mm smooth shank machine screw
through the front of the spinner cone and into the
threaded adaptor. Tighten the screw securely, but do
not overtighten.
INSTALLING THE COWL
q
12) Align the front of the cowling with the back
of the spinner. The radius on the cowl should be cen-
tered around the radius of the spinner. There should
also be a 1/16” gap between the spinner and the cowl.
It is important that they do not touch. Use masking
tape to hold the cowl firmly in position.
q
13) With the cowl held firmly in position, mea-
sure forward 1/8” from the back edge of the cowl
and place four marks to locate the mounting screws.
Two marks are located on each side of the cowl. One
mark should be 3/8” up from the bottom of the cowl
and one mark should be 1-1/2” up from the bottom
of the cowl.
q
14) Using a 1/16” drill bit, drill four pilot holes
into the cowl and through the fuselage sides at the
four marks made.
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15) Mount the cowl to the fuselage using four
2mm x 12mm wood screws. Tighten the screws
completely to secure the cowl in place. See photo
# 33 below.
Photo # 33
Remove
Air Duct
(both sides)
Propeller Hub
Machine
Screw
Propeller
Blade
Threaded
Adapter
Motor
Shaft
Wood
Screws
(2 ea side)
Spinner
Cone
