Sky Flieger (oz16407)

About this Plan

Sky Flieger. Radio control sport model for electric power. WIngspan 71 in.

Note this plan is a free download available from theModel Aviation site at http://www.modelaviation.com/sky-flieger where it appears along with the full build text, full bill of materials, and some great build pics. Also a free download of the plan in tiled format.

See also RCGroups thread at: https://www.rcgroups.com/forums/showthread.php?4013927-Sky-Flieger-AMA-Free-Plans

Quote: "This airplane project has been one of the most fun that I have ever completed. I was looking through my covering material and discovered that I had a lot of yellow, red, and black. It hit me that those are the colors of the German flag.

This airplane uses the wing from a design I created six years ago called the SkyEye, but I wanted this model to be able to carry at least one pilot and a Barbie-size passenger.

It has a lot of dihedral that makes it easy to control with three channels. Rudder-only turns are beautiful. The wing loading is low and that translates to fast takeoffs from grass, even at half throttle. I also wanted to have plenty of lighting on the airplane for flying at dusk, so I used 22 white LEDs. My plans show you where to install them. Well, let’s get into building.

Cutting Out the Parts: As seen in Figure 1, cut out all of the parts that are depicted on sheets two, three, and four of the plans. All you will need is a glue stick to glue those patterns onto either the balsa, pine, or plywood as called out. As large as this model is, you will still need to glue some parts together. The fuselage sides are 7 inches wide, but you only have 4-inch balsa to work with, so you will have to splice the balsa together to give you an 8-inch width. Parts such as the fuselage sides and the wing ribs that require two or more to be built should be cut stacked to save some time. Be sure to cut on an angle with your scroll saw, as shown on certain parts, such as the fuselage formers and wingtips. Notice that there are a number of holes to be drilled, and some of the holes will need to be threaded.

Building the fuselage: As shown in Figure 2, glue the plywood landing gear mount to the rear balsa floorboard. Pin these to a building board over waxed paper as they dry. My photo does not show the big slot in the landing gear mount because I cut it out later to save some weight. Glue formers F2 and F3 to the floorboard and to the front right fuselage side panel, as shown in Figure 3. Use a square to make sure the fuselage side panel is perpendicular to the floorboard. Ensure that you have laminated F2 together for a total thickness of 3/8 inch.

Figure 4 shows gluing the left front side of the fuselage to the floorboard and the F2 and F3 formers, again making sure that everything is square. The upper front and rear wing mounts and F4 are also glued in place in this step. Note that it is 3/16-inch plywood and the rear edge of the fuselage side panels should only cover half the thickness of this former. The rear fuselage side panel pieces will cover the other half.

Figure 5 shows the glued-in instrument panel and the F1 motor mount. Use elastic bands to hold the side panels against these parts as they dry. This is a great time to glue in the gauges on the back side of it after you have painted the front side of the instrument panel. I painted the instrument panel dark gray, although everything else in the cabin was later painted black..."

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