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Hangar 9 Funtana 125 ARF Assembly Manual
Step 19
Center the throttle stick and trim. With the radio system
on, remove the standard servo horn from the throttle servo
and place a 180 degree servo horn on the servo so it is
perpendicular to the servo. This will provide equal throw
from open to close at the carburetor.
Step 20
Use the radio to move the servo to the closed throttle
position. Close the carburetor at the engine and use a felt-
tipped pen to mark the pushrod where it crosses the outer
hole of the servo horn.
Step 21
Move the throttle servo to open using the radio. Open the
carburetor at the engine and note where the line crosses the
servo horn. If it does not line up to the outer hole you may
need to use a different length servo arm, a different hole in
the servo horn or reposition the linkage at the carburetor.
Adjusting the throws at the radio can also be used when
using a computer radio, but it is best to set the throw as
closely as possible using mechanical methods.
Step 22
Remove the servo horn from the servo. Use a pin vise and
5/64-inch (2mm) drill bit to enlarge the hole in the servo
horn that worked best for your throttle linkage installation.
On our model we used the hole that was 9/16-inch (14mm)
from the center of the servo horn.
Step 23
Insert the pushrod connector in the servo horn as shown.
Use the 2mm washer and 2mm knurled nut to secure the
connector to the servo horn. Make sure to use threadlock on
the nut or the connector will vibrate loose.
Step 24
Reinstall the servo horn by sliding the connector over the
pushrod wire. Center the throttle stick and trim and install
the servo horn perpendicular to the servo center line.
Содержание Funtana 125
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