Throttle Control System Installation; Step 1: Installing The Throttle Servo - advanced scale models Sukhoi SU-26M Assembly Instructions Manual

STEp 1: inSTALLinG ThE ThRoTTLE SERVo

STEp 2: inSTALLinG ThE ThRoTTLE puShRod houSinG And ThREAdEd puShRod
STEp 3: inSTALLinG ThE AdjuSTABLE puShRod connEcToR
q Mark the locations of the engine mounting holes onto the engine mounting
beams, then drill 4.5mm (11/64") diameter holes through the engine mounting
beams at the marks you drew.
q Install your engine onto the engine mounting beams using four M4 x 35mm
machine screws, four M4 flat washers, four M4 split washers and four M4
lock nuts.

ThRoTTLE conTRoL SYSTEm inSTALLATion

q Install the throttle servo into mounting hole in the right side of the servo tray.
There are predrilled pilot holes for the servo mounting screws, although you
may need to drill new pilot holes if the predrilled holes don't line up with your
particular servo.
IMPORTANT The servo output shaft should be toward the back of the
fuselage.
q Drill a 3mm (1/8") diameter hole through the firewall for the pushrod housing.
+
You will need to remove your engine to make it easier to drill the hole
accurately.
IMPORTANT Drill the hole as close to the same height as the throttle arm
as possible to prevent having to make bends in the pushrod wire. Make sure
that you drill the hole high enough to clear the fuel tank support floor, too.
q Cut the pushrod housing to a length of 521mm (20-1/2"), then test-fit and glue
the pushrod housing to the firewall.
q Thread the clevis onto the pushrod wire, then slide the threaded pushrod into
the pushrod housing and attach the clevis to your engine's throttle arm.
q Open and close the carburetor several times to ensure that the pushrod
does not bind. You may need to make a shallow bend or two in the pushrod
so that it lines up better with the throttle arm.
q Install the adjustable pushrod connector into the hole in the servo arm that
is 13mm (1/2") out from the centre of the servo horn, making sure not to tighten
the hex nut too tightly. You don't want the pushrod connector loose, but it should
be able to rotate without binding.
IMPORTANT To prevent the nut from loosening during flight, apply a drop
of thin C/A to it.
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