P-51D Mustang (oz11193)

 

P-51D Mustang - plan thumbnail image

About this Plan

P-51D Mustang. Radio control sport scale model WWII fighter, for .40 power.

Quote: "P-51D Mustang. Sport scale version of the US WWII fighter for 0.40 motors and 4 function R/C. Design by Pavel Bosak.

IN A SHORT article published in the French magazine 'Modele', I read that my plans for a semiscale model of the US Navy 'Corsair' FU-4D fighter was the best seller of 1982. This prompted my decision to build a series of the best known fighters of WWII. So to follow the 'Corsair' I have designed a series to a common scale designed around one specific engine size - 0.40 cu in. I first built a P-51 Mustang followed by a Japanese Zero.

All the models in this series are relatively small having 1200-1300 mm wing span, and quite high surface loadings in the order of 80-90g/dm2. I had several reasons for building these models. First they are compact, even a complete model can be placed in a large suit-case or on the rear seat of a car. Secondly, the powerful motor ensures a reserve of performance and moreover the heavier the model the more stable it is in a strong wind. The model of the P-51D is semiscale, constructed with regard to the most simple and quick methods. The history and the description of the P-51 D have been published many times and there are several reference sources such as 'Profiles' available so I do not propose to repeat them. Now to the construction.

Building the wing: This is a conventional all balsa structure using ribs and spars. It is also possible to build the wing from foam and veneer. For a balsa wing cut from 2mm plywood W10, W1 templates for ribs. Cut eight rectangles a little bigger than W10 from 3mm balsa. Put these rectangles between the templates W1 and W10, drill a hole through them and bolt the sandwich together. Now shape the whole block and at the same time cut the notches for web and spar. Repeat for the other wing half but beware of making two right or two left sets.

Now add doublers to W1 -2-3 ribs from 1mm plywood. Cut web W11 from 5mm balsa and glue ribs W1-10 onto it, together with the 1/8 x 3/8 spruce spars. Build each half of the wing separately and when dry glue both halves together with joiner W16 from 2mm plywood. To get the right dihedral, place one wing half on a flat surface and prop up the other 5cm. Then cut notches for undercarriage mounts in the front part of W1, 2 and 3. These are made from beech blocks 15 x 12 mm. Screw the 8swg piano wire undercarriage legs to them, then glue these blocks to the notches in W1, 2 and 3. Now glue the section of leading edge W12 from 5mm balsa into place and cover the bottom of the wing with 3mm balsa. Cement W17 between the central ribs W1; VV17 is cut from 3mm plywood. Now add a 10mm hard-wood dowel into W16, 17 and cement a 1 mm plywood rectangular reinforcement betweer ribs W1.

Fit the aileron control pushrod and add the 3mm balsa top wing sheeting. Now glue on the other half of the leading edge W13 from 10mm balsa followed by the central part of the leading edge W15 and the wing tips. When dry sand the wing. Now cut out the ailerons from the basic wing. Add parts W14 from 7mm balsa sand the aileron and fill the ends with 3mm balsa (see sectional view of aileron). Screw control horns to the ailerons and fit with mylar hinges.

Building the tail surfaces: Both parts are of the same construction, a basic balsa frame of 5mm balsa covered on both sides with 3mm balsa. Rudder and elevators are cut from 10mm balsa, elevator halves are connected with 16swg piano wire.

Building the Fuselage: Before starting the fuselage assembly prepare all the parts. First cut the 5mm balsa sides strengthened with plywood doublers as shown. Cut formers F1-5 and the tail wheel mount. Fit captive nut for wing fixing to F4 mounted on a beech block. The tail wheel leg formed from 2mm steel wire if fitted to F7. Epoxy the nuts for engine fixing to the engine bearers..."

P-51 Mustang, RCM&E, May 1984.

Direct submission to Outerzone.

Supplementary file notes

Article pages, thanks to RFJ.

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P-51D Mustang - completed model photo

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