Skye Treck Skyseeker Mk.II
Side-by-side two-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 tail-dragger 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.
The Skyseeker Mk.II is the two-seater in the Skye Treck range. It is similar in layout to the Mk.I, but to fit it for its two-seat role, the control system has been changed to conventional three-axis, with stick and rudder pedals. A notable point is that whereas most three-axis aircraft with single-surface wings use spoilers for roll control, the Skyseeker Mk.II uses ailerons.
Unusually for a two-seater, the principal dimensions and engine specifications are virtually identical to the solo machine, the differences being largely confined to the undercarriage, where larger main wheels are used. As on the single-seater, floats, skis and instruments are available as extras.
Engine: Rotax 277, 28 hp at 6200 rpm
Length overall 12.5ft, 3.81m
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
Tailwheel diameter overall 3 inch, 8cm
Main wheels diameter overall 20 inch, 51 cm
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
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