Arrowhead. Control line sport delta model.
This is a modern redrawn plan in PDFvector format by hogal.
Quote: "Like to build a Delta? Full-size Plans overleaf. Arrowhead, by Ron Moulton.
Specially designed for the Point five diesels by Ron Moulton, and stunt flight tested with the Allbon Dart. Can be built from one sheet of 1/16 balsa, price 1/2d.
Have you a point-five diesel, a spare tank, a few odd lengths of wire, scrap balsa, dowel and ply? Then all you'll need to make this stuntable little delta is just one sheet of 1/16 x 4 x 36 in medium balsa and 5 in of engine bearer - it's as simple and inexpensive as that!
Flight tested on 22 ft lines with both the ED .46 and Allbon Dart, Arrowhead is fast, manceuvrable, and very pleasing to the eye. It's just the model for flying in a restricted space - and the noise quotient of its baby motor should bring no objection to use of the village green or nearby school playground.
Ready to start ? Well, if you have 1/16 x 1/4 in sheet: carbon trace the eight ribs, leading edges and fin as close together as possible and leave one end free for the nose sheeting and bulkheads - the front one can be laminated. Strip whatever is left into 1/4 in and 1/2 in for TE and braces. Pin centre ribs over the plan, join up with the bulkhead /bearer assembly, and two 12 in lengths of odd TE. Lift off plan and add platform with bellerank, 1/8 x 1/8 in brace, tank and engine, then nose sheeting.
Working 'in the hand', add the end ribs, then leading edges and tip TE's, two other ribs and root riblets. Elevator is built over plan, with odd LE stock as a basis. Ends are dowelled to pivot loosely in ply facings. Join up pushrod, cut and 'patch' LE for lead-out wires, add paper tube for compression screw extension, then fit the fin and under-trough with 1/4 in covering support strips on either side.
A. half-ounce tip weight is bound in the starboard tip, then cover with Modelspan, fit a bubble hood - and fly!"
Direct submission to Outerzone.
Update 08/10/2016: Added greyscale scan thanks to KraftyOne.
Greyscale scan of original plan as printed.
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This model plan (like all plans on Outerzone) is supposedly scaled correctly and supposedly will print out nicely at the right size. But that doesn't always happen. If you are about to start building a model plane using this free plan, you are strongly advised to check the scaling very, very carefully before cutting any balsa wood.
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