Piel CP.80 Zephyr / Cougar

The Sapphire is a single-seat racing airplane of all-wood construction designed by Claude Piel. The airplane is stressed for the load factors of +12 and 19 C's at the maximum takeoff weight of 770 pounds. The Saphhire can accommodate any engine from 50 to 100 hp. Its wing is fully cantilevered and tapered for minimum drag and has a tip-to-tip laminated box spar to avoid heavy root fittings and wing alignment problems. The fuselage consists of three bulkheads and is entirely plywood covered. The cockpit is roomy enough to accommodate a large pilot. The landing gear is a fixed tailwheel configuration.

The Cougar is a single-place, high-speed aerobatic monoplane. It utilizes an all-wood design and a 90-hp engine.

In 1980 plans were available from E. Littner, Box 272, SaintLaurent, Quebec H4L 4V6, Canada.

Engine range: 65 to 100 hp
Span: 19.7 ft
Length: 17.3 ft
Height: 5.6 ft
Area: 66.7 sq ft
Empty Weight: 575 lbs
Fuel: 60 lbs
Max Speed: 200 mph
Cruise 75% 5,000 ft: 175 mph
Cruise 65% 5,000 ft: 155 mph
Stall Flaps Up: 60 mph
Approach Speed: 80 mph
Vne: 235 mph
Rate Of Climb: 2350 ft/min
T/O distance: 650 ft
Landing Distance: 650 ft
Range (65%): 280 miles
Complete set of plans 2009: US$225

Zephyr
Engine: Continental C-90, 90 hp
HP range: 65-90
Height: 5.6 ft
Length: 17.3 ft
Wing span: 19.7 ft
Wing area: 66.7 sq.ft
Weight empty: 515 lb
Gross: 840 lb
Fuel cap: 10 USG
Speed max: 200 mph
Cruise: 155 mph
Range: 280 sm
Stall: 50 mph
ROC: 2300 fpm
Take-off dist: 600 ft
Landing dist: 650 ft
Service ceiling: 10,000 ft
Seats: 1
Landing gear: tail wheel

Littner Zephyr
Engine: Continental O-100, 100 hp
HP range: 65-100
Height: 5.6 ft
Length: 17.3 ft
Wing span: 19.7 ft
Wing area: 66.7 sq.ft
Speed max: 200 mph
Cruise: 155 mph
Range: 280 sm
Stall: 50 mph
Weight empty: 515 lb
Gross: 840 lb
Fuel cap: 10 USG
ROC: 2300 fpm
Take-off dist: 650 ft
Landing dist: 650 ft
Service ceiling: 10,000 ft
Seats: 1
Landing gear: tail wheel

Cougar
Gross Wt. 770 lbs
Empty Wt. 525 lb
Fuel capacity 10 USG
Wingspan 23’8”
Length 20’l0”
Top speed 190 mph
Cruise 160 mph
Stall 67 mph
Climb rate 2300 fpm
Takeoff run 600 ft
Landing roll 600 ft
Range 300 sm