CubCrafters CC11 160 Carbon Cub SS

Development

The Carbon Cub SS was originally named the "CubCrafters Super Sport Cub". In order to maintain certification under American Light Sport Aircraft limitations the maximum takeoff power is limited to five minutes.

Design

The Carbon Cub SS uses a carbon fiber spinner and air-induction scoop. The Carbon Cub weighs 300 lbs less than a Piper Super Cub. The carbon cowling weighs six pounds. The fuselage is welded 4130 tube steel with fabric covering. The wings are fitted with vortex generators for low-speed flight control. Some models use a partial color on silver base coat paint job that weighs 11 lbs less than an all-color paint job.

The CC340 engine is a Lycoming O-320 based engine developed with ECi using dual electronic ignition and ECi O-320 cylinders. The engine is rated at 5 gallons per hour at the 80 hp cruise setting.

Variants

CubCrafters CC11-100 Sport Cub S2

An O-200 powered LSA variant

CubCrafters Carbon Cub EX

An experimental kit variant of the Carbon Cub SS with a gross weight of 1,865 lb (846 kg).

Specifications (Carbon Cub SS)

Data from Flying

General characteristics

Capacity: 2

Length: 22.75 ft (6.93 m)

Wingspan: 34.25 ft (10.44 m)

Height: 9.25 ft (2.82 m)

Wing area: 171.9 sq ft (15.97 m²)

Aspect ratio: 5.2-1

Airfoil: USA35(B)

Empty weight: 896 lb (406 kg)

Gross weight: 1,320 lb (599 kg)

Fuel capacity: 24 gallons usable in 25 gallon tank

Powerplant: 1 × CC340 Horizontally opposed piston engine, 180 hp (130 kW) for maximum of 5 minutes, 80 hp continuous. The short term increased output is suitable for short field takeoff and initial higher rate of climb. In level flight, 80 hp produces 76.3% of the speed produced by 180 hp, the cube root of 80/180.

Propellers: 2-bladed CATTO composite propeller

Performance

Maximum speed: 88 kn; 163 km/h (101 mph) Vno, the boundary between green and yellow on the airspeed indicator.

Stall speed: 27 kn; 50 km/h (31 mph) out of ground effects, without assistance of engine power, with full flaps (35 kn without use of flaps).

Never exceed speed: 123 kn; 227 km/h (141 mph) Vne, boundary between yellow and red on the airspeed indicator, achievable in powered flight pitched for dive with 1G wing loading in smooth air.

Service ceiling: 17,999 ft (5,486 m)

Rate of climb: 2,100 ft/min (11 m/s) using 180 hp, no flaps, below gross weight.

Wing loading: 7.37 lb/sq ft (36.0 kg/m²)

Thrust/weight: 7.33 per hp