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Hawk Sport Construction Manual

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STEP STEP 35 35 Tail Tail Gearbox Gearbox Assembly Assembly<br />

Assembly<br />

Attach the tail input<br />

gear assembly onto the<br />

rear of the drive wire<br />

shaft using threadlock<br />

on the two M4x4 Set<br />

Screws (insure insure the the filed<br />

filed<br />

flat flat spot spot is is aligned aligned with<br />

with<br />

one one of of the the the set set screws screws). screws<br />

Position the two gear<br />

assemblies into the right<br />

gear box half (insure insure the<br />

the<br />

2 2 bevel bevel gears gears are<br />

are<br />

meshed meshed meshed properly properly and<br />

and<br />

the the ball ball bearings bearings are<br />

are<br />

fully fully fully seated seated in in their<br />

their<br />

recesses recesses ) and liberally<br />

grease the gears before<br />

attaching the left side.<br />

Position Position the the gear gear box<br />

box<br />

halves halves such such that that the<br />

the<br />

molded molded pins pins are<br />

are<br />

fitted fitted into into the the the key key<br />

key<br />

holes holes in in the the end end end of<br />

of<br />

the the tail tail boom. boom. Secure<br />

with one M3x10 Socket<br />

Cap Screw and M3<br />

locknut at the back of<br />

the gearbox and two<br />

M3x16 Socket Cap<br />

Screws with M3 locknuts<br />

at the middle of the<br />

gearbox. Install the<br />

Vertical Fin with two<br />

M3x30 Socket Cap<br />

Screws and M3 locknuts<br />

through the molded fin<br />

and into the front<br />

mounts of the tail rotor<br />

gearbox.<br />

Tail Boom<br />

Assembly<br />

Tail Drive<br />

Shaft Set<br />

[HW3063]<br />

M3x16 Socket Cap<br />

Screw x 2<br />

Flat Spot<br />

M4x4 Set Screw x 2<br />

(med hex key)<br />

M3 Locknut<br />

x 2<br />

Grease to be used inside the tail gearbox should be a teflon or<br />

light lithium type of grease commonly found in a hobbyshop.<br />

Do not use grease or any type of lubricant on the remaining<br />

gears on the helicopter because they are exposed and can<br />

actually attract dirt and debri that can lead to a failure.<br />

Apply<br />

Grease<br />

Tail Output<br />

Gear Assembly<br />

M3x10 Socket<br />

Cap Screw<br />

M3 Locknut x 3<br />

Apply red locktite to the drive shaft end and insert into the gearbox input<br />

shaft. Do not use on set screws, only locking the wire shaft to the input shaft.<br />

Vertical Tail Fin<br />

[HI3067A]<br />

M3x30 Socket<br />

Cap Screw x 2<br />

23

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