FM Ranger (oz6994)


FM Ranger (oz6994) by HA Thomas  1950 - plan thumbnail

About this Plan

FM Ranger. Free flight sport rubber model.

Quote: "Tired of constructing gas-powered models? Then get to work on this rubber-powered, butterfly tail, low-wing ship.

It is not strange that only a comparatively few rubber-powered models are built these days, for it is actually easier to build, adjust and fly a control-line model. Consequently we have modelers with several years' experience who have never built rubber-powered jobs.

You have to try it yourself to know first-hand that rubber-powered models can supply a full share of thrills and satisfaction to their builders. The FM Ranger is meant to appeal to those who are willing to have a fling at a rubber job. The ship is a com-promise in design, featuring real-ism on one hand and flying ability on the other. Construction is straightforward throughout and all plans are full size.

Since the hand-carved propeller will likely pose the only stickler in
this project, we suggest it be tackled first. The firm balsa block is first scribed and sawed to the shape given in the front view (Plate 1C), then to the outline given in the side view as indicated on Plate 1A. With a sharp, long bladed penknife, start the carving on the under surfaces first.

Make diagonal slicing strokes and shape a slight undercamber, particularly toward the tips. On the upper surfaces, leave the blades thicker at the hub, tapering toward the tips and trailing edges. Use progressively finer grades of sandpaper to smooth the blades and bring them into balance. Drill or burn the shaft hole to freely pass the .032 in wire. Dope the propeller several times, sanding lightly between coats.

If you do not wish to carve your own prop, a suitable hardwood or
balsa propeller may be purchased in many hobby shops.

Construction will move faster if you are systematic about it. Why not cut out all parts, slice all strips, etc at the beginning? Ribs and false ribs are cut around aluminum, plywood or celluloid templates, while the formers are cut by halves from two layers of sheet, lightly cemented together. We used a little file for notching, rather than a knife.

After cementing the strip reinforcements inside the fuselage sides, join them with formers C and D. The landing gear, incide-tally, may be sandwiched to former C at this time. Later, add all other formers and the strip cross pieces..."

Quote:- "Hi Steve, this is the Flying Models Ranger by H.A. Thomas scanned from the Oct 1950 Flying Models. The V-tail is interesting and it would fly well rubber powered or any power and control system if desired. An electric RC version would be fun. Thanks, Jeff McCamant Story City iowa"

Direct submission to Outerzone.

Supplementary file notes



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FM Ranger (oz6994) by HA Thomas  1950 - model pic


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