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Skye Treck Skyseeker Mk.III

A single-seat single-engined high-wing monoplane with conventional three-axis control. Wing has unswept leading and trailing edges, and constant chord; cruciform tail. Pitch control by fully flying tail; yaw control by fully flying rudder; roll control by half-span ailerons; control inputs through stick for pitch/roll and pedals for yaw. Wing braced from above by kingpost and cables, from below by cables; wing profile single-surface. Undercarriage has three wheels in taildragger formation; bungee suspension on all wheels. Push-right go-right tailwheel steering connected to yaw control. No brakes. Aluminium-tube framework, with optional pod. Engine mounted below wing driving pusher propeller. Aluminium tubing is 6061T6 grade. Rigging is stainless-steel cable. Wing covering is Dacron.

It is similar in layout to the Mk.I, but the control system has been changed to conventional three-axis, with stick and rudder pedals.

The Skyseeker Mk.III is in effect a single-seat version of the Mk.II, using the same control system and having very similar dimensions and only slightly lower empty weight. Apart from the seating arrangements, the most obvious difference is the use of 16 inch (41 cm) main wheels, as on the Mk.I, rather than the 20 inch (51 cm) type fitted to the Mk.II

This machine is supplied in kit form and the manufacturer says it takes 30h to build. Rigging time is listed as 30 min.

Floats, skis and instruments are available as on the Mk.I, while the Rotax engine can be replaced at customer's request by a 215 cc single-cylinder Cuyuna of 20hp.

Engine: Rotax 277, 28 hp at 6200 rpm
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
Total aileron area 9.0 sq.ft, 0.84 sq.m
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
Tailwheel diameter overall 3 inch, 8 cm
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
Empty weight 245 lb, 111 kg
Max take-off weight 496 lb, 225 kg
Payload 251 lb, 114 kg
Max wing loading 3.101b/sq.ft, 15.1 kg/sq.m
Max power loading 17.71b/hp, 8.0kg/hp
Load factors +4.0, -2.0 design
Max level speed 55mph, 88kph
Never exceed speed 65mph, 105 kph
Max cruising speed 45 mph, 72 kph
Economic cruising speed 42 mph, 68 kph
Stalling speed 20 mph, 32 kph
Max climb rate at sea level 700 ft/min, 3.6 m/s
Min sink rate 250 ft/min at 30 mph, 1.3 m/s at 48 kph
Best glide ratio with power off 6/1
Take-off distance 50ft, 15m
Landing distance 25ft, 8m
Service ceiling 10,000ft, 3050m
Range at average cruising speed 180 mile, 290 km

 

 


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