Pong Two (oz5800)

About this Plan

Pong Two. 1/2A trainer and sport model for 2 channel RC.

Quote: "Two or three years ago I built a little R/C airplane called Pong (oz10592) in Flying Models, May 1981. It was designed to fly in the front yard and had a ping-pong ball for a spinner to eliminate any damage to houses or windows in case of misadjusted controls. It did its job well and provided hours of fun. Old age, trees, and weeds reduced it to a series of odd shaped patches and seams of glue: exit Pong! The design was a good one, if a little old-fashion, and seemed a good place to start for a replacement.

The wing design was retained because it had proven to be light and strong; the fuselage was modified for a low wing to bring its looks up to date and the tail was changed slightly to afford a little snappier control response. Enter Pong Two, or son of Pong, still powered by a Golden Bee, still just two channels, and even more fun than its predecessor.

Pong Two will nearly fly itself. It will recover from some of the most awkward positions almost without help, or in spite of help from me. It is a good trainer and most of its early flights were made by my grandson. It is easy and inexpensive to build and will fly quite nicely on 10% nitro fuel. There is plenty of wing area to support a third channel if you should want to add a servo and Ace throttle sleeve.

Construction. Trace the fuselage sides onto medium 1/16 in sheet balsa, cut it out, and add the Longerons, uprights, and doublers. Pin the two sides together and sand them to the same outline. While pinned together drill the holes for the wing mounting dowels. Build up the cabin formers and cut the firewall from 3/16 inch plywood. Glue the two cabin formers to one of the fuselage sides and make sure they are perpendicular to the side and in the proper position. Glue the other side to these formers right over the first and check that both sides are properly aligned. One of the cyanacrylate adhesives with an accelerator makes short work of this as well as gluing the firewall in place. Pull the tail together and sheet the top of the fuselage with cross grain 1/16 inch balsa.

Before sheeting the bottom, glue the plywood landing gear mount in place in front of the wing cut-out and run the Gold-N-Rod guides for the elevator and rudder push rods. Position the guide support about half way along the fuselage between the aft cabin bulkhead and the tail..."

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