Candy II (oz10933)
About this Plan
Candy II. Control line sport model, for 4 to 5 cc, or larger, petrol motors.
Quote: "Candy Mk II, by FB Thomas.
CONTROL line models are coming well into the public eye nowadays, and Candy II was produced specially to meet the demand for an elementary control-line model which would yet have a performance that would satisfy the modeller with some experience.
With a span of 38 in Candy is the best size for combining docility of control with manmuvrability and a fair turn of speed. She is not over sensitive to the elevator movement, a common fault amongst this type of model, but handles nicely and accurately on the line. The model is fully equipped down to the take-off release gadget, an in-genious little mechanism which allows the lone hand to fly his model without help.
Building Instructions. Wing. Assemble the complete wing flat on building board. Cover with 1/16 in sheet as far back as the main spar, then cut the wing in the centre, at spars, trailing edge and leading edge. Drill and file slots for 3-ply dihedral centre 'section and cement up incorporating dihedral. Cover with silk or nylon before installing.
Fuselage. The longerons are of1/4 in square hard balsa. Vertical and transverse pieces 1/4 in square soft balsa. Assemble each side on the plan, then to cement 3/16 in sheet front balsa bulkhead (Former C), leavin longerons projecting 3/16 in forward of this. Fit the undercarriage to plywood bulkhead (Former B), and then cement to front of fuselage. Be sure all bulkheads are at right angles to fuselage or you will upset the thrust line.
After-drying, drill as shown through Formers B and C and 1/4 in square member behind. Cement in lengths of 3/32 in diameter birch dowel rod to anchor undercarriage bulkhead firmly to fuselage.
When fuselage is complete remove upright members (1), (2) and (3) from both sides of fuselage by cutting through cement joints, and mark for correct replacement later. Cement wing in position, raising bottom main spar 3/16 to give about plus 2 degrees incidence. Reinforce attachments at mainplane to longerons and also leading edge with plastic wood, and build up with plastic wood behind 3/16 balsa bulkhead (Former C) where it joins the 1/4 square upright and transverse members. Put plenty of cement on before the plastic wood. Re-cement upprights (1), (2) and (3) and cement well to centre two ribs.
Cowling. The general principles, are shown on the drawing, but must be made to suit' engine used. When fitting, engine to bearers leave 3/4in space between induction pipe and bulkhead to allow choking with finger..."
Candy Mk2, a 38 in wingspan Control-line model by F.B. Thomas. From the Aero Modeller September 1947.
Direct submission to Outerzone.
Update 27/02/2019: Added article, thanks to RFJ.
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User commentsI've always been interested in these early control line models as subjects for radio and the Candy has long been a favourite. My first, the red and yellow one in the photos [more pics 003], was built in the nineties and was PAW 19 powered. Great fun but sometimes a bit of a white knuckle ride, particularly when re engined with an Irvine 25. The second, finished with a paint job instead of Solarfilm, devastated by diesel fuel, came out a little heavy. So number 3, the red one in the photos [more pics 004, 005], used the same wing but with the fuselage construction copied from the Chorus Gull (oz11793) (Thank you Brian Peckham), came out much lighter and was finished with Oracover, left over from the Chorus Gull. This model has been flying for the last 6 years(as of 2019) and is a great fun aeroplane. As an exercise I’ve now changed it to electric just to see how it works. The early plans attributed the design to F.B Thomas, Flight Lieutenant. I’m sure he had something to do with the Spitfire because that’s just how it looks in planform in the air.
Roger Smith - 22/12/2019
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