Modeltech 123752 Instructions For Final Assembly - page 24
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❑ Partially thread one machine screw into each of the two steel collars, then slide the steel collars onto the threaded
elevator pushrod wire and up against the nylon snap keeper.
❑ Make a shallow bend 1-1/2" from the plain end of the 17-1/2"
long pushrod wire, then slide the pushrod wire through the steel
collars, as shown. The bend in the pushrod wire should be
deep enough to separate the pushrod wires by 1/2".
❑ Adjust the pushrod wire so both threaded ends are even
with each other, then carefully tighten the machine screws in
both steel collars.
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When tightening the machine screws, make sure both
pushrods stay flat and don't twist up.
❑ Using a modeling knife, cut away and remove the covering material from over the elevator pushrod exit hole in each side
of the fuselage. The holes are located 5-3/4" in front of the back of the fuselage and 2-3/8" above the bottom of the fuselage.
❑ Connect your radio system and plug the elevator servo into the receiver. Center the servo by double-checking that the
elevator trim lever on your transmitter is centered.
STEP 3: INSTALLING THE ELEVATOR PUSHROD ASSEMBLY
❑ Carefully slide the threaded ends of the pushrod wires into
the preinstalled pushrod housings from inside the fuselage.
❑ Install the servo horn onto your servo, making sure that it's
centered and pointing toward the left side of the fuselage,
as shown.
❑ Install the servo horn retaining screw to secure the servo
horn to the servo.
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✦IMPORTANT✦
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✦ After installing the pushrod assembly, move the pushrod assembly back and forth several times and
double-check that the steel collars do not hit the inside edge of the plywood support bulkhead. If they do, or if they are
very close to hitting, carefully trim that portion of the bulkhead away, so that there is no chance the steel collars will hit it.
Failure to double-check this could result in the steel collars catching on the bulkhead during flight and jamming the
elevator, resulting in a crash.
STEP 4: INSTALLING THE CONTROL HORNS & CLEVISES
❑ Position one nylon control horn onto the bottom of one
elevator half. When aligned properly, the centerline of the
control horn should be 3/4" out from the side of the fuselage
(at the hinge line) and the clevis attachment holes should be
lined up over the hinge line. The base of the control horn should
be angled slightly toward the fuselage side, too, so that it lines
up better with the pushrod wire.
❑ When satisfied with the alignment, mark and drill 5/64"
diameter pilot holes through the elevator half for the control
horn mounting screws.
Continued On Next Page
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