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Wag-Aero CUBy / Sport Trainer / Acro Trainer


The CUBy is a replica of the Piper J-3 Cub with numerous design improvements - Higher gross with more useful load, increased cruise speed, and utilizing Continental engines from 65 thru 100 hp. It was designed by Dick Wagner, president of Wag-Aero of Lyons, Wisconsin. There is very little difference between the CUBy and the original J-3, except for a crank-operated elevator trim tab instead of the jackscrew adjustment that moved the stabilizer plane. When Dick Wagner developed his Cuby, Wagabond and 2+2 kits, all were fitted with J-3 rudders. Reason: Dick had purchased all the J-3 inventory left at Piper's old Ponca City, OK plant, which included a barn full of J-3 elevators, stabilizers, gear legs and rudders.


First flown on 12 May 1975.




The CUBy can be made in four different versions: Standard CUBy, Super CUBy (a replica of the PA-18 allowing for larger engine). CUBy Observer (replica of the L-4), and the Acro Trainer (which is a special shortened-wing version for aerobatics).

Later marketed as the Wag-Aero Sport Trainer.

The Quick Build Kit will produce a complete aircraft less the engine, propeller, and finish paint. Fits the Light Sport Aircraft category and will only take a Builder 700-1000 hours to complete with a fully welded fuselage.




Engine: Continental, 85 hp
HP range: 65-150
Length: 22.3 ft
Wing span: 35.2 ft
Weight empty: 720 lb
Gross: 1400 lb
Fuel cap: 12 USG
Speed max: 102 mph
Cruise: 94 mph
Range: 270 sm
ROC: 220 fpm
Take-off dist: 375 ft
Landing dist: 420 ft
Service ceiling: 12,000 ft
Seats: 2
Landing gear: tail wheel

Sport Trainer
Cruise: 85 mph
Stall: 38 mph
Range: 310 sm
Rate of climb: 450 fpm
Takeoff dist: 375 ft
Landing dist: 420 ft
Engine: Continental C-85, 85 hp
HP range: 68-85
Fuel capacity: 12 USG
Empty weight: 720 lb
Gross weight: 1220 lb
Length: 22.3 ft
Wing span: 35.2 ft
Seats: 2 tandem
Cockpit width: 24 in
Landing gear: tailwheel
LSA: yes


Engine: 150 hp
Wing span: 35'3"
Length: 22'3"
Useful load: 680 lb
Cruise speed: 94 mph
Stall: 39 mph





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