About this Plan
Viggen. Profile chuck glider. From the 'For the Tenderfoot' series.
Quote: "All-balsa profile scale glider is catapult launched. Has a flashing climb and gentle glide. Viggen by Frank Scott.
Viggen: The three-forked thunder-bolt from the hammer of Thor. Viggen is also the amazing new fighter for the defense of Sweden.
Built by Svenska Aeroplan AB, better known to us as SAAB, the Viggen possesses Mach 2 performance yet will not rely on vulnerable airfields. It is as versatile as our own Phantom and will undertake attack, reconnaissance, and all weather intercept roles. All of this, yet it only needs a 1500-ft runway, or highway, for its operations.
Our model has the flashing climb of the original, yet is quite easily built with little expense.
Construction: Begin by covering your work table with a piece of Saran Warp so the glue won't stick where it shouldn't; glue the 1/16 sheet balsa wing pieces together flat as there is no dihedral or curved airfoil. While the wing dries, cut out the fuselage from a firm piece of 1/8 balsa. Round the edges with sandpaper and glue the 1/16 sheet balsa fin and sub fin in place.
The wing should be dry now; sand it smooth and round the edges with fine sandpaper. The canard stabilizer, or foreplane if you will, is cut from 1/16 sheet balsa and sanded. Cut it apart at the center and glue back together propping up each stabilizer tip 3/4 in for the necessary dihedral.
You will find that it is much easier to decorate the model at this point than after it is assembled; therefore mark out all desired control surface outlines and panel lines with fine pointed felt tipped marking pens or ballpoint pen. Well-stocked hobby shops may have Swedish decals, but if not, make your own insig-nia on plain white paper with colored ink or pen, then cut out and glue in place.
To assemble the model it is only necessary to slide the stabilizer and wing into their proper slots and glue very securely. Make sure the parts are carefully aligned before the glue dries. Bend the launching hook from a paper clip, shove the end into the wood of the fuselage, and glue very securely to complete the model. It is important to locate the hook as shown on the plan.
Flying. Now that you're ready to fly the Viggen, check to see that your model balances at the location shown on the plan. No ballast has been necessary on our Viggens, but if yours does not bal-ance correctly, add bits of clay to nose or tail as required.
Hand glide your model to check for proper flight, correct turning with bits of clay on the high wing and do not warp the surfaces for adjustments, as the higher speeds during launch can cause over control and subsequent sur-prises.
Prepare the hi-start launcher with a ten-ft length of 1/8 flat rubber tied at one end to a stick driven into the ground and with a 30- or 40-ft length of string at the other end. A paper clip may be tied at the remaining end of the string to complete the catapult.
Now it's launch time. Slip the paper clip over the hook in the model and draw the rubber taut. Face the Viggen into the wind and if you grasp the model by the upper rear corner of the fin it will automatically come to the proper angle for a smooth, high launch.
If the model tries to loop as it comes off the towing line, simply add more string to the towline until the model comes off in a flat glide. If the model stalls in the glide and flutters down without recovering, add a bit of weight, to the nose and possibly bend the trailing edge of the stabilizer down to pre-vent diving. Note that the action of the elevators on a canard model is opposite that of the conventional airplane.
Have fun with your Viggen, and with a bit of turn in the glide you should have no trouble flying in a field the size of the average school yard."
Attached is Frank Scott's Viggen from American Aircraft Modeler magazine issue 03-73. Regards,
Direct submission to Outerzone.
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User commentsI STRONGLY recommend building this model! I knocked one up in 30mins for my 6yr old son to fly that morning as he is small for his age and can't really get enough pull back on a normal catapult setup. So I made the "high start" from 6ft of office rubber bands daisy chained together and about 25 feet of kite string. Man does this thing GO! It's a fantastic flyer and my son now can get decent flights with this setup. I will be building another one and putting more effort into the finish(models worth it). Raid the scrap box with your kids/grand kids and have some fun.
Tommy - 12/07/2020
I had my eyes on this one since you posted it, and Tommy's comment made me spend 90 minutes making one [main pic, 003]. Test glides so far so good, once I find a good chunk of elastic for the catapult, it's off to the park!
dfritzke - 22/07/2020
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