Sukhoi Su-31 (oz11843)

About this Plan

Sukhoi Su-31. Radio control sport-scale aerobatic model. Wingspan 226 cm, per motori da 50-60 cc.

Update 7/12/2023: Added article, thanks to Cesare.

Quote (google-translated from the Italian): "The idea of building the Sukhoi arose after seeing an article on MRA regarding the construction of this splendid acrobatic; but what struck me most was the construction system of a decidedly aeronautical type: the fuselage was obtained with plywood panels curved on a simple frame and stringers structure.

I must confess that over the years I have been increasingly attracted to sports aviation and in particular to home-built aircraft: I believe the desire to build a real aircraft is common to many model aeroplanes. Having discarded the idea of a 'home-built' (on the advice of his wife), all that remained was to undertake the construction of yet another model even if it was a little more generous in size.

The Sukhoi presented in the French magazine was in 1:4.5 scale and included a 20cc 4-stroke engine: wanting to create something more substantial I opted for the 1:3.4 scale (the choice of dimensions was conditioned by the space available in the work room and in the living room where I carry out the final assembly phases).

Obtaining the best flight characteristics has always been my main objective, for this reason, despite the vast documentation collected, in setting up the project it was not my intention to create a re-production but rather a 'replica' in scale of the true Sukhoi, especially in flight; for this reason I made some aerodynamic modifications already used successfully on previous models.

Initially the model was born as the Sukhoi 26M, but the evolution of the real aircraft was faster than my construction times and while I was completing the upper part of the fuselage the Sukhoi 31 appeared: I liked the line of the new version to such an extent that I didn't hesitate for a single moment to make the changes, which were minimal after all, to adapt the model to the new standard.

Construction: A model like this is only suitable for those who have good building and flying experience, and are animated by an unhealthy passion for aerobatic planes and for the Sukhoi in particular - indispensable requirements to help overcome the numerous and inevitable difficulties along the way.

The first operation as a carpenter is the cutting of all the plywood pieces; the work must be carried out with great precision as every slightest imperfection will inevitably cause deformation of the coating. Carefully select the balsa to be used for covering the wings and rudders..."

Supplementary file notes

Article.

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