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Skye Treck Skyseeker Mk.I

Single-seat single-engined high-wing monoplane with hybrid control. Wing has unswept leading and trailing edges, and constant chord; cruciform tail. Pitch control by fully flying tall; yaw control by fully flying rudder; no separate roll control; control inputs through weight-shift for pitch/yaw/roll. Wing braced from above by kingpost and cables, from below by cables; wing profile single-surface. Undercarriage has two wheels with tailskid; bungee suspension on main wheels. Push-right go-right tail steering con-nected to yaw control. No brakes. Aluminium tube framework, without pod. Engine mounted below wing driving pusher propeller. Aluminium tubing is 6061T6 grade, anodized. Rigging is stainless-steel vinyl-coated cable. AN hardware.
The Skyseeker uses a taildragger undercarriage with skid.

The Skyseeker Mk.1 is a hybrid machine, with weight-shift assisted by a rudder and elevator. Various engines have been fitted to the aircraft, but the usual one is a Rotax 277. However, there were also Skyseeker Mk.1s around with Cuyuna 215R engines, developing 20hp, or with single-cylinder Kornet K-55 engines mated to a 48x20 inch (1.21x0.51m) propeller through a 2/1 reduction. Construction time is listed as 25 h and rigging time as 15 min. Options include floats, skis, and various instruments such as ASI, CHTG, EGTG, and compass. In addition, the factory will convert a Mk.I to Mk.III specification on request.

Engine: Rotax 277, 28 hp at 6200 rpm
Propeller diameter and pitch 48 x 34 inch, 1.22 x 0.86 m
Reduction ratio 2.1/1
Max static thrust 1801b, 82kg
Power per unit area 0.18h p/sq.ft, 1.9 hp/sq.m
Fuel capacity 4.8 US gal, 4.0 Imp gal, 18.2 litre
Empty weight 225 lb, 102 kg
Max take-off weight 496 lb, 225 kg
Payload 271 lb, 123 kg
Max wing loading 3.101b/sq.ft, 15.1kg/sq.m
Max power loading 17.71b/hp, 8.0kg/hp
Load factors +4.0, -2.0 design
Length overall 12.0 ft, 3.66 m
Height overall 9.0ft, 2.74m
Wing span 32.0ft, 9.75m
Constant chord 5.0ft, 1.52m
Dihedral 5 deg
Sweepback 0 deg
Elevator span 9.2ft, 2.80m
Rudder height 5.0 ft, 1.52 m
Total wing area 160sq.ft, 14.9sq.m
Wing aspect ratio 6.4/1
Wheel track 4.2ft, 1.27m
Main wheels diameter overall 16 inch, 41cm
Optional floats, dimensions: 10.0ft long x 2.0ft wide, 3.05 x 0.61 m
Optional skis, dimensions: 4.0 ft long x 10 inch wide, 1.22 x 0.25 m
Max level speed 55 mph, 88 kph
Never exceed speed 65 mph, 105 kph
Max cruising speed 45 mph, 72 kph
Economic cruising speed 42mph, 68kph
Stalling speed 19 mph, 31 kph
Max climb rate at sea level 800 ft/min, 4.1 m/s
Min sink rate 220 ft/min at 32 mph, 1.1 m/s at 51 kph
Best glide ratio with power off: 6/1
Take-off distance 50ft, 15m
Landing distance 25ft, 8m
Service ceiling 11,000ft, 3350m
Range at average cruising speed 180 mile, 290 km



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