Progo

 

Progo - plan thumbnail image

Progo - completed model photo

Progo  
from Robbe (ref:3179)
51in span
Tags: IC Cabin
formers incomplete :(


Submitted to Outerzone: 12/05/2018
Outerzone planID: oz10070 | Filesize: 1038KB | Format: • PDFbitmap | Credit*: Dries

   

About this Plan

Robbe Progo. Radio control trainer model. Wingspan 1280mm. For 3.5 - 7.5cc engines.

Quote: "General information on Progo. Simple, rapid construction - thanks to the prefabrication of all components - and excellent, docile flying characteristics: these factors make Progo an ideal first model, or for advanced training for experienced pilots. This high quality is based on many innovations, new industrial manufacturing methods, and functional design of all parts.

The special feature of this ultra-complete kit is the pre-finished Robbe Plura fuselage, moulded in one piece in high quality thermo-plastics material. It has an outstanding ability to withstand mechanical and thermal stress. The fuselage material can be glued with virtually all normal adhesives, and accepts all the usual paints used in modelling. The fuselage is presented in a finished state, ready for fitting out, cutting possible building errors to the minimum. Another special feature is the Robbe Siros wing panels, which are capable of absorbing high flight loads. They are supplied in an advanced state, and require a minimum of work to complete. The wing can be built with or without ailerons.

The prefabricated combination 'motor bulkhead/motor mount' also counts as a practical, time-saving innovation. The two-part motor bulkhead is provided with a moulded-in tank holder, which guarantees precise location of the 250 cc clunk tank. The motor mount, which is screwed to the motor bulkhead, is designed to locate the standard fixed double-leg nose unit, and also features a moulded-in holder for a steerable nose wheel.

The strutted main undercarriage cannot swing out of line on taking off from the ground, and thus ensures excellent tracking.

Progo's appearance can be made even more semi-scale by fitting the undercarriage fairing set (Order No 32203. This also reduces the drag of the wheels.

Progo can be steered by rudder alonelor ailerons. The elevator and rudder controls are gentle in response, and this allows you to make the occasional wrong command without an instant reaction, like a highly-strung movie star. The model has a high degree of inherent stability and will recover from pitch oscillations by itself, provided that enough height is available. As a trainer, a 3.5 cc IC motor is adequate, eg the Robbe Enya 21X.

The model's full potential is realized with a 6.5 to 7.5 cc motor. If equipped with aileron control, Progo is then fully aerobatic. The good-natured flying characteristics are retained regardless of the motor fitted... "

Quote: "Hello Steve and Mary, in attach you can find the plans for the Robbe Progo. It is merely assembly instruction because the kit came with a premoulded fuselage and ready to cover wings."

Direct submission to Outerzone.

Supplementary files

Kit instructions, in German and English (20 pages).
Decals scan.

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User comments

I guess the plan and the instructions are all there is about the Progo, due to its high degree of prefabrication. IIRC a friend of mine used one of these for his first tentative steps into RC flying and the Progo was docile enough for this task. I think the wing had a bit of wash-out for benign stall characteristics, but I can not exactly say how much. So I guess the plans are just for nostalgia, but not for rebuilding. By the way, D-EMIL is the registration of a beautifully restored Focke Wulf Stieglitz pre-war biplane. Keep up your great work!
clouddozer - 22/05/2018
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Notes

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Scaling

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