CX4 – Single Place

Thatcher CX4

Since 2004, over 500 plans sold, and 50+ flying examples.


Thatcher CX4 Specifications

Length18' 3"5.56m
Wing Span24'7.32m
Height4' 8"1.42m
Cabin Width23"58cm
Wing Area84.4 sq ft7.841m sq
Wing Loading10 lbs / sq ft4.54 kg / 0.09m sq
Empty Weight560lbs254kg
Gross Weight850lbs385kg
Useful Load290lbs131.5kg
Design Load3.8G's
Fuel (92 Octane Auto)10.5 Gallons39.7 Liters
Engine1700cc VW 55 Hp (Optional: 1835cc - 2180cc)
Electrical SystemStarter, Alternator
BrakesHydraulic Disc/Toe Brakes
Airframe Construction6061-T6 Aluminum - Airframe, Fiberglass - Cowl, wing tips & wheel pants
NotesAircraft may be flown with canopy off, but not open. The wings are removable for transport in ~20 minutes.
Cruise (75% Power)125 mph201 km/h
Stall (Vso)40 mph64 km/h
Rate of Climb (Vy)850 fpm at 75mph259 m/min at 120 km/h
Never Exceed Speed (Vne)155 mph249.4 km/h
Best Decent Speed63 mph101 km/h
Best Angle of Climb (Vx)63 mph101 km/h
Take-Off Roll700 ft213 m
Max. Ceiling10,000 ft3028 m