Swayback (oz506)


Swayback (oz506) by Chester Lanzo from Air Trails 1947 - plan thumbnail

About this Plan

Swayback. 58 in span pylon-type old time gas free flight by Chet Lanzo.

Quote: "A free flight gas buggy that will give a good account of itself in any competition. Swayback, by Chester Lanzo.

HONEST fellas, the fuselage on this class B gas jobbie is not shaped that way because of a hard bash. It was designed that way for a purpose.

The undercambered airfoil in the body helps generate lift in the climb and glide, without adding any drag to speak of. This produces a hot climb and a slow soaring glide. The whole combination of high wing, lifting tail, and lifting body produces a very stable and, efficient plane.

Let us get on to the building of the model. The box type,of fuselage cross section is extremely simple and makes for a no-crunch type of construction. Begin by placing the two 3/16 square longerons on a full-size drawing of the body. Glue the 3/16 square uprights in place, adding the 3/16 nose sheeting after waiting for the sides to dry. Repeat the same procedure to make two identical body sides. Remove the sides from the plans and cut them apart so as to have two complete sides. Place the cross braces in the. nose section for about six. stations and let dry. Cement the fuselage rear tail post together and then add all the rest of the braces. Construct the pylon from 1/8 sheeting and 1/16 plywood as shown on the drawing. Before gluing to the body, sand to streamline shape.

All the ignition units are glued solidly in place and on parts are removable. The landing gear is bolted into place on the 1/8 plywood fire wall with small clamps of aluminum.

The tail surfaces are of simple design and easily constructed. To begin the stabilizer cut out 13 ribs to the shape shown on the drawing from 1/16 sheet. From 1/8 hard balsa sheet, cut the trailing edge and tips of the stabilizer. After having formed the leading edge over a steaming tea kettle to the curvature shown on the drawing, pin each component in place over the drawing. After cutting each rib to its proper length slip into place and glue. After drying, the whole assembly is removed from the plans and the 1/8 square spars are glued into their proper places. Sand all ribs and tips to a streamlined contour, using plenty of elbow grease.

The rudder is of simple construction. Cut out the trailing edge and tip from 1/8 sheet and glue the IA square leading edge to the parts already cut out. Next put in place the lAt squire spar. Cut the three streamlined ribs to proper length, notching them to receive the Ys square spar. Slip the ribs onto the spar and glue into place..."

Update 21/02/2019: Added article, thanks to RFJ.

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Swayback (oz506) by Chester Lanzo from Air Trails 1947 - model pic


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