12 December 2012

FLAPERON CONTROL

This is the Linear Actuator Mount (75C1-1).We have draw a line 10mm from the aft edge (the edge towards the Linear Actuator Mounting hole).

We then positioned the Actuator Mount on the Right Side of the fuselage and clamped it with G-clamp.At first, the Actuator mount won’t fit as there is a small clash with the longerons around 1 mm.But we have solved it by filing the edge so that it will fit the space.

As shown, we have flipped the fuselage and here,as we can see the first line of holes that we need to drill through the bottom skin into the actuator mount and the longeron.

We have checked for consistency of the Actuator Mount, and here we started to drill through the Bottom Skin into the Actuator Mount and the Longeron.

Here as we can see, the holes are drilled with #40 drill size and gripped with #40 grip pin, shown in red.

Then, we continue to enlarge the holes into #20 drill bit as instructed in the Plan and Photo Assembly Manual. No issues for this part.The actuator mount is then unassembled and the holes on the Actuator Mount and Bottom Fuselage are debured.We then clean up the burrs and undercoat the Actuator Mount with Black Can Spray to protect the bare metal from corrosion with respect to time.

Here, we have started to work on the other parts of the flaperon controls. We started by identifying the parts that is Flaperon Bellcrank (75C1-7), Flaperon Bellcrank Bearing (75C1-8) and Flaperon Bellcrank Bushing (75C1-9). As we can see in the picture, Flaperon Bellcrank Bushing (75C1-9) has surface corrosions. We have done maintenance on the parts that was removing the corrosion, and spraying it with LPS-3.

We then marked the center of the Flaperon Bellcrank Bearings (75C1-8), as shown in the picture.

With a #40 drill bit, we then drill a hole in the center of the bearing.We then expanded the hole up to ½” in steps. We also have clamped the bearing in a vise to prevent it from spinning while drilling the holes.The Flaperon Bellcrank is then filed so that no sharp edges on every edges.