B-70 Valkyrie (oz4257)


B-70 Valkyrie (oz4257) by Bob Linn from Aeromodeller 1961 - plan thumbnail

About this Plan

B-70 Valkyrie. All-sheet profile semi-scale model. The Valkerie published in the Aeromodeller of April 1961. This is a modern CAD redrawn plan.

Quote: "Ultra-modern, low budget, all-sheet semi scale delta for .8 cc engines. B-70 Valkyrie, by Bobb Linn.

THE MOST EXPENSIVE aircraft ever to be constructed, costing far more than its weight in gold, the North American B-70 Valkyrie is intended to travel at speeds in the order of Mach 3 at altitudes of 70,000 ft and it has been proposed to use a machine of this type as a launching platform for DynaSoar, Samos, Midas and Discoverer space vehicles. (There's scope for experi-ment by intending builders of this model!)

In complete contrast, the all sheet semi-scale model offered by Bob Linn will burden not even the tightest budget. The little craft has been specially designed to give hours of fun for a very small initial outlay both in money and time. To those for whom the most important requirement is a model that will take a great deal of punishment and still retain its good flying characteristics, Valkyrie fills the bill. This is one of a series of Bob's B-70's. At the moment he is working on a multi-channel R/C variant having had so much success with his first rudder-only, Veco 19 version.

First step is to glue the fuselage centre member pieces in the rough shape shown on the drawings. It is a good idea to pre-glue all edges before making the butt joints. While this is drying, the wing pieces may be cut out; try to select wood of similar grain and bend character-istics, checking each offcut end to see if it will make one of the other pieces. After all the wing pieces have been cut, assemble them on a large, flat surface and butt join edges with PVA glue. Be certain the edges blend smoothly before starting gluing operations. If possible leave the wing to dry overnight.

When the fuselage pieces have set, the fuselage profile may be traced with carbon paper but be specially careful to lay out the airfoil curve as shown on the drawings as this is very important. Cut out the fuselage including the foreplane slot..."

Update 26/06/2016: article pages, text & pics added, thanks to RFJ.

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B-70 Valkyrie (oz4257) by Bob Linn from Aeromodeller 1961 - model pic


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User comments

I was an inexperienced free flight model flyer when I built this plane. I did a super job of building it, testing the engine and getting the glide just right. Filled up the engine, fired it up and let it go on top of one of the highest hills in Cincinnati. It flew right out of my hand straight as a arrow and continued on that path until it was out of sight! Hard way to learn that you need to trim free flight models to fly in circles and only put a tiny bit of fuel in them! If you run across this great model let me know. It could be on the moon as far as I know. Best Regards,
ChuckLohre - 28/07/2014
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