SIG Kadet Senior
The instruction manual suggests using pins (at left) to keep the control surface hinges accurately aligned so that CA can be applied to lock them in place. The technique works well for all of the hinged surfaces. The aileron control linkage (above) consists of a metal pushrod threaded on one end to accept a metal clevis and lock-nut for mechanical adjustment, and a right angle bend at the servo arm, clipped off and held in place with a nylon snap keeper. Unlike the wire tricycle gear of all previous Kadet Seniormodels, the Sporthas been designed to accept a sturdy painted aluminum two-wheel gear. It is held in place with socket-head bolts (below) and T-nuts anchored to a plywood mounting plate. Like the main landing gear, the wheel and wheel pant fittings (at left) are very much in the "sturdy" category. The wheels, made of a dense foam, offer some cushion on landing, but are also very resistant to wear, even on paved runways.
that accept the socket head bolts are cleared of glue, while at the same time having a sufficient amount of glue on their outside to hold them in place. I found that two of the T-nuts on my plane seized the bolts about halfway in be- cause of glue in their respective interiors, and then came loose as I tried to back them out. It was an easy fix, but one that I could have avoided by checking more carefully before plowing ahead in the assembly process. Installing the stabilizer and fin came next. I particularly liked that the covering from the bottom and the top of the stabilizer was removed to allow gluing to the fuselage
as well as mounting the fin in its accurately cut slots. Once the epoxy had cured on those parts, inserting the tail wheel wire into a pre-drilled hole in the fuselage and screwing the nylon fitting in place allowed the tail wheel wire to be epoxied into a pre-drilled hole and pre-carved channel in the rudder as it was being hinged. Pretty neat! Hinging the elevator and attaching the control horns to the elevator and rudder— using the accurately pre-drilled holes again—completes the basic framework of the plane and allows you to move quickly into in- stalling the radio, engine, and tank.
Radio
The radio installation is aided by the cav- ernous fuselage and that the guide tubes for the elevator and rudder pushrods are already in- stalled. There is plenty of room for hands and tools. I chose to mount the receiver with hook and loop material on the side of the fuselage op- posite the pre-cut switch mount holes, which kept everything relatively neat and tidy. I then wrapped the battery in foam and simply placed it on the bottom of the fuselage to help deter- mine the CG. I found that there was room to push it a considerable distance forward, even as far as the tank bulkhead, should I need to do so.
The ARF kit has many nice features to save both time and effort, including having the covering already removed (at left) from the fuselage and the stabilizer for easy assembly with epoxy. The Kadet'scabin is cavernous (above) and has pre-cut openings for servos, switches, and wire bundles for the electric option. It even offers a choice of throttle servo mount openings for nitro engines on either the right or the left side, depending upon which side the engine's throttle arm is located. The author chose to mount the receiver on the side of fuselage using hook and loop material.
52 MAY 2014
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