About this Plan
Pushover. Free flight sport model for .020 and .024 engines, designed by Doc Baker.
Quote: "Ready for something new? Then try this pusher. Mayve its just a sport flyer, but it will give you hours of genuine fun. Pushover, by Bill Baker.
Ever since I first flew with a reed-valve engine, I have wanted to build a pusher. The Pushover is not a contest model, but a stable, rugged, and attractive ship. My wife was surprised that it flew at all and it surprised me because it flew off the board without needing any adjustments. The Pushover climbs slowly, using a full tank of fuel to reach the height a contest model attains in ten seconds, so no engine timer is used. The glide is just good enough to make good landings, so no dethermalizer is used either. Any pattern is safe with this ship as the torque is very small and the model is entirely out of the spiral propwash. I enjoy its remarkable ability to fly equal circles to either the right or left, depending on how the rudder is set.
An .020 or .024 reed-valve engine is recommended, although a tired .049 could be used. As a reed-valve engine will run backward, use a standard propeller with it, but if you have a rotary-valve engine, pusher props are readily available.
The model is constricted entirely of medium-weight 3/32 in sheet, (6 sheets), plus one strip of 1/4 in square, and some scraps of 1/16 plywood.
Fuselage. I started by making two right sides. Suggest you make one right and one left, as it saves time. The unbroken line on the plan is for the side pattern; the broken line indicates the final dimensions after the top and bottom are covered with 3/32 sheet. Cut out the sides, marking the positions of the 1/4 square uprights carefully, and join the upper and lower halves of the sides by cementing the 1/4 square uprights in place across them. When dry, cement F2, F3, and the plywood, F4, to the uprights to join the fuselage sides. Use a square to be sure the sides and F4 are at right angles..."
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Supplementary file notes
Article pages, text and pics, thanks to RFJ.
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