M-18 (oz17023)

About this Plan

Movo M-18. Free flight power model. Wingspan 2.56 m.

Direct submission to Outerzone.

Scan by Gianni, cleanup by RogerB.

Quote (google translated from catalog): "The characteristics of the M.18 model comply with the FAI record standards.

M18: Model with an internal combustion engine, easy to center, excellent flying characteristics, and exceptional strength - monoplane with a tapered, cantilevered single-spar wing - fuselage with ovoid cross-section frames - rational and extremely simple construction with an integral fabric covering.

CONSTRUCTION CHARACTERISTICS
Wingspan 2560 m/m
Overall length 1350 m/m
Lifting surface 70 dmq.

Engine 10 cc, 1/5 HP
Total weight 2400 g
Overload 900 g

Full-scale drawing of the model and its parts, consisting of 10 separate plates plus explanation: Lit 40.

All materials required for construction and Finishing (engine and drawing excluded): Lit 250.

Assembly kit complete with all materials and parts already machined and prepared for construction and finishing. (Engine and drawing excluded): Lit 400."

Update 26/9/2026: Added kit instructions, thanks to Pit.

Quote (google translated): "Instructions for the Construction and Assembly of the M-18 Power Model.

The M-18 flying model is a high-wing cantilever monoplane powered by a 10cc internal combustion engine producing approximately 1/5 HP. Designed and crafted with meticulous attention to detail, this model can be built easily and accurately even by modelers with limited experience in internal combustion-powered aircraft. The construction sheets comprising the model's plans are so detailed and comprehensive that they ensure a quick and successful build. Standard aeromodeling construction practices apply to this model; the following instructions outline only the specific, novel assembly procedures unique to the M-18.

A key feature of the design and construction method is that the model can be built accurately and executed perfectly using only a flat assembly table. Furthermore, several interesting design features have resulted in an aerodynamically efficient aircraft with pleasing aesthetics.

Flight tests conducted on the prototype demonstrated excellent flying characteristics, ease of balancing, great stability, and exceptional structural robustness.

When assembling the model, please note that the standard orthographic views in the plans should be used for construction, while the perspective views serve only to clarify specific details.

CONSTRUCTION: WORK STEPS:

1) Reinforce the trailing edges of the ribs and formers using a 'composite' balsa strip (3x7x1). All trailing edges - on the wing ribs and tail surfaces - must be reinforced in this manner, applying the strip first to the section that contacts the spar (see drawing A), then to the underside (B), and finally to the top side (C).

It is advisable to wait until the glue applied to section A is dry before attaching strips B and C. Carefully ensure that the plywood core fits fully into the strip's groove (A); to this end, it is a good idea to run a small piece of 1mm plywood through the groove itself.

The strip should be fitted to the core dry; casein glue should only be applied along both sides of the core once you are certain the two pieces are perfectly interlocked. To keep the core and strip held together during gluing, clamp the parts in position using a clothespin near the trailing edge and secure the front section with rubber bands.

Once gluing is complete, finish the part by trimming off excess composite material with a razor blade.

Apply the composite balsa strips to all partial formers along the horizontal cut line, following the same procedure described for the ribs. Cut the protruding section of the strip - using half a razor blade - so as to completely clear the slots for the main wing spars (r.82) and the tail assembly longerons (N. 79).

2) Spar construction: the spar consists of two square-section linden strips (5x5 mm) joined together by a cardboard web (2) and small linden spacers (3) measuring 5x5x1 mm. Regarding the construction of the spar, which must result in the same shape and dimensions..."

Supplementary file notes

Instructions.

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