Instruction manual

STEP 42-43 Throttle Linkage & Main Blades
Step 43
The Main Rotor Blades in the Hawk kit are pre-built and balanced, the only work required is to
glue the blade grip root ends to the blades ( Please note that this step is to avoid the blades separating
from the helicopter during flight!!). Temporarily install the root ends ( see note ) onto the blades by
cutting the covering over the holes and mark with a pencil, the outline of the plastic parts on the cover-
ing, remove the root ends and mark a second line about 3mm inside the first and trim away this internal
portion of the covering with a knife. Using some sandpaper roughen the plastic root ends and glue them
in place with Slo CA glue. Install the blades onto the rotor head to dry to make sure the thickness is
perfect when finished.
Step 42
From Bag 4, attach one steel ball one 2mm nut, to both the Throttle servo horn and the Throttle
Extension from Step 17 using threadlock. Position the ball at 10mm from the center of the servo and in
the outermost hole on the metal throttle arm. With the radio on, and the throttle stick centered and the
trim in the center, press the servo horn onto the servo so the ball is at 90 degrees to the servo ( the hover-
ing position ). Move the throttle stick to the low/idle position and press the Throttle Pushrod (B) onto the
steel balls. Check that in the low position the carburetor has about a 1mm wide opening for idling and
finally as the trim is moved fully down the carburetor closes completely to shut the engine off. Also
check that in the high position the carburetor is fully open. The throttle extension nut may have to be
loosened and the lever repositioned to operate as recommended.
Shut Down
- Trim full down
Full Power
Open 100%
Hover-Carb open
50%
0% Idle
- Trim at Middle
Hover
50%
100% Full
Power
Idle-Carb open
aprox. 1mm
Carb closed
Throttle
Servo
Pushrod B
Sand both the
plastic root ends
Cut away
this portion
of the
covering.
Plastic roots ends
2 per blade.
HW3190
(Main blade set)
Trailing Edge
of Blade
Leading Edge
of Blade
Main Blade Assembly
Completed
blade.
Airplane Radio
Setup
The only change is
to install the steel
ball on the servo
horn at a distance of
11-15mm from the
center of the servo.
Note: The plastic blade grips have a top and a bottom which are different when viewed from the
large end. Test fit the parts to be sure that the total thickness of the blades are 14mm.
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