Sonerai II
Piston • single engine • Mid Wing • Fixed gear
Range Visualization
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Default: 190 lbs (FAA standard)
Default: 30 lbs
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Fuel on board
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Mission Profile
122
KTAS
Cruise Speed
2
Occupants
300
nm
Max Range
370
lbs
Wet Payload
About the Sonerai II
Overview
The Monnett Sonerai II is a high-performance, mid-wing, tandem two-seat experimental aircraft originally derived from a Formula V racer. Designed by John Monnett, it is famous for its use of modified Volkswagen automotive engines, offering a high-speed, sporty flying experience on a budget. Its wings are designed to fold back against the fuselage, allowing for easy towing and storage in a standard garage.
Key Features for GA Buyers
- Folding Wings: Significantly reduces ownership costs by allowing garage storage and eliminating hangar fees.
- Operational Economy: Consumes only 4-5 gallons of fuel per hour using a VW-based engine, making it one of the most affordable cross-country cruisers.
- Sporty Handling: Exceptional roll rates and responsiveness; stressed for limited aerobatics when flown solo.
- Versatility: Available in mid-wing or low-wing (II-L) configurations, and as a taildragger or tricycle gear (II-LT).
Trade-offs
- Payload Constraints: With two adults and fuel, the aircraft often nears its gross weight limits; baggage space is very limited.
- Cockpit Comfort: The tandem cockpit is narrow (approx. 23 inches), which may be cramped for larger pilots or long trips.
- Maintenance: As a plans-built experimental aircraft, build quality varies significantly between units, requiring thorough pre-buy inspections of the 4130 steel frame and fabric covering.
Technical Specifications
Dimensions
- Wingspan
- 18.67 ft
- Length
- 18.83 ft
- Height
- 5.0 ft
Weights
- Max Takeoff Weight
- 1,150 lbs
- Max Landing Weight
- 1,150 lbs
- Useful Load
- 430 lbs
- Fuel Capacity
- 10 gal
Performance
- Cruise Speed
- 122 KTAS
- Range
- 300 NM
- Service Ceiling
- 13,000 ft
- Rate of Climb
- 500 fpm
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