Since Tom Peghiny and partner Spark Lamontagne first lightened the Flightstar and named one model the II SL (for “Sport Light”), they haven’t been able to sit still and simply admire their work. From our first pilot’s report on the SL 3 years ago,1 the two have tweaked and adjusted the model to find even better qualities. A new front and aft fairing are part of the package, and the latter you might notice rather quickly. Virtually all the rest of the improvements are subtle things. In fact, that word is a hallmark of Flightstar innovation. No surprise then that the company should adopt “New and Improved” as its new advertising headline to assure you know about the changes. Better and Better I’ve followed the Flightstar from its first flight, when it wasn’t even the Flightstar. This design – which once crossed the Atlantic – is from the inventive mind of Swiss national Hans Gygax, and became the rather gaudy 440ST.
Flightstar II SL
Seating | 2-seat, side by side |
Empty weight | 365 pounds |
Gross weight | 950 pounds |
Wingspan | 32 feet |
Wing area | 157 square feet |
Wing loading | 6.1 pounds/sq ft |
Length | 19 feet |
Height | 7 feet 10 inches |
Fuel Capacity | 10 gallons |
Kit type | Assembly |
Build time | 90-150 hours |
Standard engine | Rotax 503 dual carb |
Power | 52 hp at 6,500 rpm |
Power loading | 18.3 pounds/hp |
Cruise speed | 65 mph |
Never exceed speed | 96 mph |
Rate of climb at gross | 700 fpm |
Takeoff distance at gross | 200 feet |
Landing distance at gross | 300 feet |
Standard Features | Full dual controls with dual left-hand throttles, folding wings, steerable nosewheel, fiberglass nose pod, 3-point shoulder harness pilot restraints, streamlined struts, dynafocal engine mount, Rotax B gearbox, engine cooling air scoop, 2-blade wood prop, rotationally molded fuel tank with sump and drain. |
Options | HKS 700E 4-stroke engine, Rotax 582 2-cycle engine, Rotax C or E gearbox, electric start, flaps, in-flight adjustable elevator trim, nondifferential main wheel drum brakes with center-pull brake lever, 4-point shoulder harness pilot restraints, ballistic emergency parachute, instruments (ASI, altimeter, EGT, CHT, tach, hourmeter), 3-blade composite prop, cabin enclosure, rear enclosure, floats, Mylar® no-paint covering. |
Construction | 6061-T6 aluminum tubing, welded 4130 chromoly steel cage and landing gear, fiberglass pod, presewn Dacron® sailcloth covering. |
Design
Cosmetic appearance, structural integrity, achievement of design goals, effectiveness of aerodynamics, ergonomics.
Pros - Based on a popular and successful design, company has added new improvements that genuinely improve the breed. Two-seater operates very well on the 52-hp Rotax 503 dual carb, a simple well-regarded engine choice; available with larger 65-hp Rotax 582 2-cycle engine or the 60-hp HKS 700E 4-stroke. Standard folding wing. Engine cooling cowling looks good and is reported to work effectively. New pod makes for easier shipping and assembly.
Cons - Flightstars sit rather low to the ground and have a tractor engine; one or both may turn off some buyers. Given the many improvements over the years, it's increasingly hard to find fault with the Flightstar II SL's overall design.
Systems
Subsystems available to pilot such as: Flaps; Fuel sources; Electric start; In-air restart; Brakes; Engine controls; Navigations; Radio; (items covered may be optional).
Pros - With lots of weight to spare (at 365 pounds empty), the Flightstar II SL can add optional systems and still meet the weight limit for ultralight trainers. New instrument panel is large enough to allow gauges and radios. Comes standard with desirable features like full dual controls and folding wings. Center-pull (brake handle) brakes are very effective. Effective in-flight trim (an option).
Cons - Adding lots of systems - even the company's enclosed cabin (II SC "Sport Cabin") version - will add weight to a design that has been carefully lightened over the years. Making brakes differential would require customized hardware. To further simplify and lighten, flaps are an option. Test ultralight had pull starting from outside only.
Cockpit/Cabin
Instrumentation; Ergonomics of controls; Creature comforts; (items covered may be optional).
Pros - New front-end fairing aids entry to cabin for those with long legs or less flexibility. More knee room thanks to raised lower edge of panel. New windscreen material is tinted. One of the most comfortable yet simple seat arrangements in the industry (a plastic seat pan in a padded sling-style seat). Side-by-side seating is preferred by most flight instructors. New cabin allows some pressure on floor when entering.
Cons - Low posture of ultralight means some older pilots may have extra difficulty entering and exiting. Windscreen on test ultralight (first public example) was not crystal clear. Ground clearance is greater on many other ultralights. Full enclosure is available, but consists of snap-on zippered doors and "roof" that some buyers may not like. No cargo area.
Ground Handling
Taxi visibility; Steering; Turn radius; Shock absorption; Stance/Stability; Braking.
Pros - Precise easily-handled nosewheel steering. Welded chromoly steel main gear is very stout, yet bumps are smoothed by bungee suspension system. Effective drum brake system activated by center handle offering great leverage. Aircraft sits on its tri-gear (i.e., doesn't tilt to the tail like some tri-gear ultralights). Low ground posture makes II SL very stable.
Cons - No differential braking to aid ground maneuvering. Upward visibility somewhat restricted while, for example, checking pretakeoff traffic.
Takeoff/Landing
Qualities; Efficiency; Ease; Comparative values.
Pros - One complaint I had about earlier II SL has been cured: touchdown now is smoother and less abrupt (reshaped nose fairing is partly responsible, as is reshaped aft fairing). The first Flightstar II SL improved landings from older (and heavier) AviaStar, and this version finishes the job. Superb visibility on landing approach. Good crosswind capability.
Cons - Longer takeoff/landing than some very slow-flying ultralights. More efficient aerodynamics causes longer ground effect float, for which the pilot must be ready (this is a good thing, but one that demands better approaches).
Control
Quality and quantity for: Coordination; Authority; Pressures; Response; and Coupling.
Pros - Roll rates and pressures improved over older II SL by shortening aileron span while increasing area slightly. Overall control in Flightstars may be about ideal for most buyers: not too fast, but predictable response. Good crosswind controls. Precision turns to headings comparable to any certified aircraft. Elevator linkages now have dual push-pull system adding assurance.
Cons - Leading with rudders helps coordination (making it a little different than certified aircraft). Despite earlier efforts, rudder throw is still a little short of optimal (noticed mainly on deep-angle slip attempts).
Performance
Climb; Glide; Sink; Cruise/stall/max speeds; Endurance; Range; Maneuverability.
Pros - Standard engine now boosted to 52-hp Rotax 503 dual carb, adding 6 horsepower (compared to 503 single carb). Climb enhanced (though not quantified in this evaluation). Flightstar retains the ability to fly fast or slow with equal ease over a broad range. Able to fly with very low engine rpm setting, which indicates good aerodynamic efficiency; was always a strong point of the design, now further improved by front and aft cabin fairings.
Cons - High-speed cruise has never been a Flightstar quality (though new fairings may have bumped the figures a couple mph). No other negatives.
Stability
Stall recovery and characteristics; Dampening; Spiral stability; Adverse yaw qualities.
Pros - Stalls are very mild and can occur down to the very low 30s. Virtually no tendency to tighten up in steep turns or accelerated stalls. Large-diameter chromoly cage is very stout in the event of mishaps. Three-point harness system is standard (4-point optional). Flightstar has worked closely with BRS on airframe positioning of emergency parachutes.
Cons - Full-power stalls cause the nose to wander and have no defined stall break. No other negatives.
Overall
Addresses the questions: "Will a buyer get what he/she expects to buy, and did the designer/builder achieve the chosen goal?"
Pros - With kits manufactured for the last 5 years by Leza-Lockwood, Flightstar HQ can concentrate on customer service, research and development, and flight training; company well-regarded in these activities. Well-tested and documented design has an excellent safety record, with more than 800 Flightstars flying worldwide. New pod allows easier assembly by owner, is more rigid, and requires no painting (unless you insist on adding weight). Upgrade options include an enclosed cabin and many accessories.
Cons - With kits manufactured for the last 5 years by Leza-Lockwood, Flightstar HQ can concentrate on customer service, research and development, and flight training; company well-regarded in these activities. Well-tested and documented design has an excellent safety record, with more than 800 Flightstars flying worldwide. New pod allows easier assembly by owner, is more rigid, and requires no painting (unless you insist on adding weight). Upgrade options include an enclosed cabin and many accessories.