Fokker DVIII (oz1798)
About this Plan
Fokker DVIII. Free flight scale model, wingspan 22inch for .32 to .5 cc diesel power. From Aeromodeller, March 1954.
Quote: "A 22 inch span accurate scale model of the Wold War I fighter, for .32 to .5 cc diesels. Fokker DVIII, by Ron Moulton.
ANTHONY FOKKER'S famous parasol-wing fighter, the DVIII was not altogether a successful fighting machine, but to the aeromodeller it represents the perfect proportions for a true scale model. Large tail area, low slung wheels for stability and good prop clearance, useful high lift aerofoil section and simple fuselage.
Against it there is the lack of dihedral and an awkward strut arrangement; but each of these points is ably dealt with in the 22 in model given full-size on the next four pages.
This is strictly for fun flying. The power/weight ratio with an ED Baby diesel at full revs is sufficient to make the Fokker tear the sky into shreds as it spirals and cavorts in any and every direction, going upwards all the time, and when the power cuts after a long engine run, the ensuing glide is flat but fast. Right thrust is essential and is built-in, right rudder too may be needed, and a 1/4 inch washout at each tip compensates for the lack of dihedral.
Here then, is the ideal model for the .5 cc scale fan who likes a spot of excitement.
Cut the bulkheads F1 to F5 and assemble with two 1/32 sides; the slots locate each one. Add 1/8 sq braces and engine bearer 'U'. Make the axle wing, bend the u/c and slide the axle through ribs and vee's, then bind and solder. Bind u/c to braces at F2 and 3 and sheet fuselage bottom with 1/32. Add skid and bend two each, front and rear struts.
Now study the wing fixing, cut a piece of balsa 5-7/16 in x 2-5/8 in and use as a dummy c/section by Sellotaping strut ends at each corner. Other ends are bound and soldered to u/c when incidence and front alignment are set.
Add 20 swg bracing around front strut, and sheet fuselage top, cutting out cockpit and add engine fairing cones. Providing incidences are as plan, the sheet tail and fin can be permanently fixed, with rudder adjustable. Scale strut covering is simply stiff paper doubled over and cemented.
The cowl is shallow, but allows plenty of room for a separate tank beside the engine. Make the cowl by wrapping iirth laminations around a 'Nescafe' tin, then fitting 4 inch front ring and double 1/32 laminated (crossgrained) face plate. Cement cowl in place, with holes for needle exten-sion and fuel filler tube.
Wheels are also laminated with 1/32 mounted on a ply disc with tube axle bearing and stiff paper cone. Retain with a blob of solder. Use plenty of cement on the inside of the cone around tube.
The wing should be built in one piece, port half first, then shifted over to complete starboard side. Prop front of TE up, and space the pairs of W1 with tubing and packing. Remove from board, crack for lower surface dihedral and add spars. Washout at tips is helped by the warping effect of the LE sheet.
Wing mounting is now completed by swinging the rear struts forward, entering all four strut ends in wing tubes through uncovered slot, and allowing rear struts to return. This is not only secure in flight, but also crash-proof, though with the total weight at less than 4-3/4 ounces, the model has to hit really hard to do any serious damage."
Update 26/10/2021: Added further article from Aeromodeller, June 2018, thanks to RFJ.
Supplementary file notes
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by Ron Moulton
Scale IC F/F Parasol Military Fighter
all formers complete :)
got article :)
Found online 16/11/2011 at:
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