Experimental Twin Tractor (oz16484)

About this Plan

Experimental Twin Tractor. Free flight sport model for rubber power. Wingspan 36 in.

Quote: "An Experimental Twin Tractor. One of the Most Unique and Finest Fliers Ever Presented. If You Want Something Different, Build and Fly This One.

HERE is a model that is different; an unusual type of airplane that will please every kind of builder. It is ideally suited as an all weather outdoor model, may be easily adapted to a contest or speed model and provides an interesting project for the advanced builder because of its many new constructional features.

Of all model types it is the twin tractor which ranks second to the single tractor fuselage model in stability and flying qualities. Not only does this twin tractor live up to that classification, but it could give an easy showdown to many a single fuselage model in both flying and appearance.

There can be no arguments as to the stability of this ship. The climb is very steep. It flies in a wide circle to the right. The glide is very flat though fast, due to the high wing loading which is slightly over 2 ounces per 50 square feet of wing area, enough for any contest, and yet the performance is outstanding considering this fact.

This model may justifiably be classed in the 'super-streamline' category, since every possible way of eliminating parasite drag has been incorporated. Among the new and novel features of this ship are the landing gear construction, the wing mounting method including the wing clips, and the method of attaching the removable tail unit.

This twin tractor may be used as a basic design for some builders who may wish to develop something new from it, which undertaking may be a very interesting and valuable one.

CONSTRUCTION: Wing: The area of the wing is 140 square inches. For those who wish to bring the model into the 150 square inch plus, or E class, it is suggested that the span be increased to 40 inches continuing the present taper to that span.

First cut all the ribs from 1/16 medium sheet balsa. It would be a good idea to scale up the root rib shown in the plans to full size, and then cut a template. However, each model builder usually has his own pet method of executing this process so it will be left to his own ingenuity..."

Direct submission to Outerzone.

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