MODEL AEROPLANE NOTES

Auckland Star, Volume LXIX, Issue 208, 3 September 1938, Page 3 (Supplement)

MODEL AEROPLANE NOTES

A TWIN RUDDER LIGHT FUSELAGE MODEL

c.asy to Build—Flies Steadily— Modern Design. (By PROPELLER.) With all the Lockheeds flying round the country lately there have been seen quite a few twin-ruddered model aeroplanes at our various meetings, and it is quite obvious that the model builder likes to keep up-to-date in his design and general appearance. The little model sketched has no particular qualification except that it follows the latest trend in having twin rudders. Actunlly in flight these twin rudder jobs (models) have a rather rolling tendency, r nil this can only be eliminated by carefully lining up the rudders and seeing tlint they are accurately set and of the light area. As all the dimensions are on the plan I will not go very fully into the constructional' details, but for the sake of the newcomer to our sport will give simple instructions. Draw the model out full size on a soft board (or on drawing paper and pin the paper down to a soft board) ana start on the fuselage construction. Build up the "two sides right on the drawing, cementing each joint

with a little dab of balsa cement. When the two sides are dry, pry them off the plan and proceed to put in the cross braces and thus build up the fuselage skeleton. The sides are actually cracked at the front and rear of the windows, and the crack cemented up again. Rubber bands will help to keep the fuselage true and square whilst drying out. Now fit the nose block, rear rubber hook, which in this case is a email dowel stuck through the balsa veneers at the rear. A wire rear rubber hook and tailskid can easily be substituted if desired.

little model depends on its lightness for its performance. A seven inch ready-cut propeller will lie found to pull it along in good style, power being four strand* of l-Bth rubber. Don't forget to oil the propeller liearing at the as this is a matter which is often neglected and the friction from an un-oiled prop bearing takes away a lot of power. The tail is quite flat and the rudders are cemented to each end of it. Cover the tail gear 011 one side only. Cover the rudders on the outer side only, for look's sake. See that there is 110 twist in either the wing or the tail assembly. The tail in

The wing is simple and is built up cemented directly on to the fuselage, a* shown, pinning the main spars down, whilst the wing is held on with a band inserting the ribs and tips. The wing can of rubber (about 1/16 x 1/30 is correct), be built in one piece and then cracked the rubber band allowing the wing to be upwards at the centre section, as shown, altered a in a fore and aft directo give the required dihedral angle. The tion on the cabin top and thus providing wing ia covered both sides with light the necessary adjustment. tissue, and water sprayed (just damp- I think that even the new builder will ened) and then allowed to dry and be able to go ahead with the informashrink. This will pull the tissue up tion at his disposal now, so I will leave tightly and no dope is needed. Keep all the rest to you and would like to hear the work as light as possible as this if you have good flights.