Woodford Special (oz4019)
About this Plan
Woodford Special. Towline glider model.
Quote: "Lightweight Glider. The Woodford Special, by Ronald Firth.
This lightweight glider was designed specifically for the open glider event of the 1951 Woodford Rally, organised by the Daily Dispatch at Manchester. Designed for rapid building, easy trimming and to be big enough to be kept in sight for five minutes under average contest conditions, the original was built in 12 hours and performance was quite up to expectation.
Average time from 100 metre line, and still air is three minutes plus, and its slaw glide makes it ideal for finding; thermals on contest day. The model can be made to turn in extremely small circles without any danger of a spiral dive - a useful trim for windy days. This is a model that can be flown safely in high winds providing the wings are braced with cotton as recommended on the plan. For normal flying, the wings are of ample strength and should have no folding tendencies!
Also suitable as a first contest model for any beginner, this is a cheap model to build, material should not cost more than 7s 6d.
Construction. Fuselage. Build the fuselage by the normal slab-sider method and when removed from the board fill in where shown with 1/16 in sheet. Add 1/8 in sheet cross-grain and carve nose block. Cement nose block and sand to fuselage contour. Add 1/8 in plywood skid. Bend the tow hook from 16 swg wire and bind securely to a length of 1/4 in square hard balsa. Cement in centre of fuselage. Sheet in the panel with 1/16 in sheet below the tow hook position. Add the underfin and arrange the auto-rudder.
Fin. Construct the fin by first pirming the 1/16 in
sheet outline directly on the plan. Slot ribs in place and cement when lilted from plan. Then add 1/16 in square spars.
Wing. The wing construction is straightforward, cut two ply templates of the ribs and make 28 ribs of 1/16 in sheet by the 'sandwich' method. Cut 1/4 in diameter holes in 8 ribs in the position shown and reinforce with 1/16 in ply..."
Quote: "November 1952 Aeromodeller I present the Woodford Special. The Woodford Special is a 58½" lightweight contest glider designed by Ron Firth. The craft was designed to be quick to build, easy to trim and large enough to be kept in sight up to the end of the maximum. Flying from a 100 metre towline an average time in still air (which is a rarity here in UK) of three minutes plus is claimed. As a contest model it is also recommended to beginners. As always with my drawings they are only tracings from the original articles and may be subject to faults ...If you do build from my plans please take care and measure at least twice before applying the knife. Most of all - enjoy."
Supplementary file notes
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by Ron Firth
all formers complete :)
got article :)
Found online 10/02/2013 at:
Format: • PDFvector • CADfile
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