Fokker Friendship (oz10732)


Fokker Friendship (oz10732) by JM Bodey from Aeromodeller 1964 - plan thumbnail

About this Plan

Fokker Friendship. Control line scale twin airliner.

Quote: "1/2 in = 1 ft scale model for two .8 cc - 1.5 cc engines with simple construction. Fokker Friendship, by Maurice Bodey.

THIS VERSION OF the Fokker-F.27 Friendship has been specifically designed for moderately experienced builders and to use engines of 1 - 1.5 cc. The simple structure is exemplified by a new form of wing assembly where there are no ribs and the result of which is an extremely strong replica of the full size, very narrow wing.

Of all the twin-engine prop-jet aircraft produced in the last 10 years, the Friendship is undoubtedly the most successful. It operates in many countries, carrying the bright colours of a large number of airlines and is manufactured under license in the USA by the Fairchild Corporation. It was designed to meet the demand for a modern successor to the well-worn Douglas DC-3 but applying the latest stringent safety regulations. As a fast, short haul airliner carrying around 40 passengers, it is seen most in the United Kingdom, in the colours of Aer Lingus.

As can be seen on the cover, Maurice Bodey chose the markings of the Australian iiirteRoberison Miller Airlines which are especially colourful and details of whose markings are given on the full-size plan.

For most enthusiasts, the most difficult part of the construction will at first sight be the well-sprung nose wheel but in actual fact, Maurice has so designed this unit that it can quite easily be made from 1/16 in brass sheet and should present no difficulty to anyone with hacksaw and small Swiss files.

Truly, this Friendship design would be our recommendation to any control line scale enthusiast wanting to make his first 'Twin' and we are sure that the extensive possibilities of adding interior detail and fitting opening doors, etc, will have an equal appeal to the experienced flier.

Start construction with the fuselage first, by cutting formers F1 and F3 from 1/8 in ply and remaining formers from 1/8 sheet balsa. Keels F13-14-15 are cut from 1/8 in sheet balsa and laid flat over plan. Cement half formers F4 to F12 in their respective positions on the keels. Now cement complete cabin sides F16 (steamed to the curve with windows cut out), followed by F3, F17 and then F2. When completely set, lift off plan and add the other halves in same procedure for the starboard side. Cut nose keel F18 from 1/2 in ply and glue to F3 and F17 then glue F1 in place using a good resin glue, not balsa cement. The fuselage can now be set aside to thoroughly dry.

The wing is of high aspect ratio and therefore needs to be torsionally stiff. It also has to take a fair amount of knocks in the usual control line landing procedure and so stout grade sheet balsa is employed. Because of the frontal taper it is neces-sary to make the wings in three sections and for this purpose, different sheet thickness are employed.

Carefully mark the centre section shape on 3/8 in and 1/2 in sheet balsa. The outer panels are marked on 1/4 in and 3/8 in sheet. Leading and trailing edges are tapered in thickness and depth as indicated in the two views on the drawing and the five cross sections. Shape these edges square and leave all sheet panels as 'blanks' for the first stage of assembly. Fret the two 1/8 in plywood spars W1 and W2 to shape and prepare the 1/8 in ply bellcrank mounting platform. We are now ready to begin assembly.

First attach leading and trailing edges to the centre section bottom sheet. Add the 1/8 ply bellcrank platform after drilling and installing bolt then recess the lower sheet to allow a slot for the push-rod. Temporarily tack the top sheet in place and now rough carve the centre section to airfoil, shape, checking it against the plan for the fit in F13. Sandpaper smooth, taking care all the time not to damage the protruding leading and trailing edges.

Now remove the top sheeting and fit W1 and W2, making slots in the bottom sheeting to accommodate the nacelle former protrusions. Use a good resin glue for this joint on which so much depends. The lower outer panels from 1/4 in sheet can now be offered up to the leading edges (which should be cracked to match the dihedral in the front view) and also the extensions of W1 and W2. Again, use a good grade resin glue for these important joints. Assemble complete bellcrank unit with lead-out wires and push-rod to the plywood mount and recess the upper centre section sheet to ensure clearance at full range of movement (see fuselage side view). Solder cup washers on wires so that they cannot come loose and lock the main nuts on pivot bolt with solder. Add 2-1/2 oz lead weight to starboard tip and complete the tips with 1/16 in ply ribs and 3/8 in sheet extremities. Fit brass tubes in the port tip for smooth operation.

The upper wing panels can now be fitted beginning with the centre section and then the outer panels, shaped to true airfoil according to the cross-sections. Make frequent checks by eye from front and rear to see that the wing is being carved true and without warp, then sandpaper over all and finally offer to the fuselage, sliding push rod through all formers F7-F11.

Make sure the wing sits square from front view on to the fuselage within the shape cut-a-way from F13 - so that the correct angle to incidence is maintained.

The Tailplane is a simple, streamlined sectioned shape and its only complication is the dihedral angle which is maintained by plywood keepers 'A' and 'B'. Make up the assembly and fit to the fuselage keel F13, keeping it perfectly horizontal and parallel to the upper fuselage line..."

Fokker Friendship, Aeromodeller, March 1964.

Note this is a low resolution plan.

Direct submission to Outerzone.

Supplementary file notes

Article pages, thanks to RFJ.


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Fokker Friendship (oz10732) by JM Bodey from Aeromodeller 1964 - model pic

  • (oz10732)
    Fokker Friendship
    by JM Bodey
    from Aeromodeller
    March 1964 
    48in span
    Scale IC C/L Multi Civil
    clean :)
    all formers complete :)
    got article :)
  • Submitted: 06/12/2018
    Filesize: 951KB
    Format: • PDFbitmap
    Credit*: Circlip, RFJ

  • Fokker_F27_Friendship | help
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Fokker Friendship (oz10732) by JM Bodey from Aeromodeller 1964 - pic 003.jpg
Fokker Friendship (oz10732) by JM Bodey from Aeromodeller 1964 - pic 004.jpg
Fokker Friendship (oz10732) by JM Bodey from Aeromodeller 1964 - pic 005.jpg

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* Credit field

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