Aeronca C-3 (oz14032)

About this Plan

Aeronca C-3. Radio control scale model, for .099 engines. Wingspan 54 in. Scale is 1/8.

Direct submission to Outerzone.

Planfile includes build instructions.

Quote: "Building and Flying Instructions: The first step before starting actual construction is to study the plan and kit contents thoroughly. Remove all die-cut parts from the sheets, and group the materials to be used for the wing, tail surfaces and fuselage. The time so spent will make the assembly that much easier. Decide at this time whether you will build the model as a Radio Control design, Free-Flight or Controline.

Wing Construction: Start with the wing surfaces. Select the spar material, and layout the 1/8 sq, 1/8 x 1/4 and 1/16 x 1/8 bottom spars on the plan. You will note the 1/16 x 1/8 spars join into die-cut W-17. The other spars must be spliced where they change angle at rib W-11. Block spars up 3/32 off plan at rib W712, and install gusset W-13 to reinforce the spar butt joint etc. Note the spars must be blocked up 3/8 off plan at the tip. Bevel spars to meet as detailed.

Cement the plywood die-cut gussets together, and then to the spars as indicated. Follow next by installing the rib units W-1 through W-12. After all ribs are positioned, the top spars are installed in like manner, followed by the leading edge, which is 1/4" sq. with a simple diagonal splice near the tip. Pre-coat end grain etc.

The ailerons are very easy to assemble, but unlike the main panels, you will do best to cement the rib units (prefixed with WA-1 etc.) directly to the sheeting provided for the aileron bottom camber. The leading edge, WA-5 is die-cut. Short lengths of .040 wire should be cemented into the ailerons to serve as adjustable yet firm mounts.

After removing the assembled panel from the plan, construct the other panel in like manner, blocking up as necessary to permit the plywood gussets to lay flat on the plan. Install W-14, W-15 AND W-16 in place, for these serve to reinforce the wire hooks for the rigging or flying wires. Cross marks appear just outboard of the W-7 rib where the thread or wires under the wing terminate. Cover the wing areas indicated with 1/16 sheet, top and bottom. Capstrip ribs in like manner. The airfoil cross-sections will clarify the structure. A scrap brace may be used at the wing center if desired. Solder the 1/16 wire rigging mount to the 3/32 wire at the wing center leading edge... "

Supplementary file notes

Printwood scan.

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