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❑
Install the servo horn onto the servo, making sure it's
centered and points toward the middle of the fuselage.
❑
Install and tighten the servo horn retaining screw to
secure the servo horn into place.
Step 3: Installing the Control Horns & Clevises
❑
Use a couple of pieces of masking tape to hold both elevator halves centered.
❑
Place one nylon control horn onto the bottom of one
elevator half, positioning the centerline of the control horn
1-3/4" out from the side of the fuselage.
❑
Angle the control horn about 1/16" toward the fuselage
side so it will line up better with the pushrod wire, and adjust
the control horn so that the clevis attachment holes are directly
over the hinge line.
❑
Mark the positions of the control horn mounting screws, then remove the control horn and set it aside.
❑
Drill the holes through the elevator for the mounting screws using a 5/64" diameter drill bit.
❑
Install the control horn and backplate using two 2mm x 15mm machine screws.
☞
Be careful not to overtighten the screws. You don't want to crush the elevator.
❑
With the elevator servo horn and the elevator half still
centered, thread one clevis onto the pushrod wire and snap it
into the
third hole
out from the base of the control horn.
☞
Hold the pushrod tube with a pair of pliers to prevent it
from turning while installing the clevis.
❑
Repeat the previous procedures to install the control horn and clevis onto the second elevator half. When finished,
double-check that when the elevator servo horn is centered, both elevator halves are centered and even with each other.
❑
Slide the end of the pushrod tubes into the two nylon pushrod housings preinstalled in the fuselage.
