Tri Wing Terror (oz4821)

 

Tri Wing Terror - plan thumbnail image

About this Plan

Tri Wing Terror. Free flight gas sport model.

Quote: "Tri-Wing Terror, by Paul Lindberg.

Two unusual angles are worked into this gas model: twin rudders and three wings, An interesting ship.

Triplanes are something rare in gas models, especially with twin rudders. We were anxious to try this type, of model out so we could determine just what the characteristics of such a model would be. To our amazement, we found it to be an exceptionally good flyer due to its great amount of wing area The short span which is only 29-1/2 inches, makes it an easy model to carry from place to place. It can be powered with any 1/7 hp or smaller motor.

Construction of Fuselage: Simplicity has been incorporated in the construction of this fuselage. Main longerons can be. made of spruce or basswood. All intermediate ,struts are of balsa. The top of the fuselage is con structed with a simple curved The ion and turtle back.

The motor mount and firewall are one unit. We suggest that you select a very hard wood for the motor mount beams. Please note: the whole assembly may he removed at will for the replacement of new parts. After carefully studying the plain you will find it easy to construct.

The motor cowl is carved from a soft grade of balsa, as this cowl is intended for appearance only, it may be attached to the firewall, although model will fly equall3 veil with, or without the cowl.

Landing Gear: The landing near is so simple to construct that there is little to be said of its construction. We might add that all connections between body and landing gear be wrapped with heavy thread and cement. At lower junction of landing gear, bind with fine wire and solder.

Wings and Tail Assembly: Construct the wings upon a flat surface, so so as to obtain perfect alignment throughout construction. The panel is cemented together at root ribs, with approximately 3° dihedral. Tin middle and lower panels are left separate as they are attached to the body after they have first been covered. The tail assembly is of unusual and clean construction. Note: the rudders are made from 1/8 sheet of balsa, medium weight.

Covering the Model: The model may be covered with light weight bamboo paper or Japanese tissue. Cover all parts separately and assemble after they are completely finished. Heavy model airplane dope makes an excellentadhesive to attach the paper to the framework. In order to make the paper drum-tight, apply a coat of water over the entire surface with an atomizer or a cheap type of spray gun. Pin the wings and elevator to a flat surface and allow the water to evaporate from them before removing, as this will prevent warping. Two to three coats of ordinary model airplane dope are necessary to keep them taut. Color coats now may be added.

Assembly Check the plan carefully on assembling, as all parts should be lined up perfectly for best results. Trimmings such as shown in the photo are had by cutting strips of paper and doping them to the finished model. Any designs may be added to suit your taste. Properly balance your model by gliding before fling it under power. An aluminium tab may be added to the trailing edge of upper left wing panel (size: 1 x 3 inches). This will help correct any torque from the propeller. This tab may not be necessary, but it is worth adding to model. Note: take especial care in testing and launching this model."

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Tri Wing Terror - completed model photo

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