Single-seat single-engined high-wing mono-plane with two-axis control. Wing has swept back leading edge, unswept trailing edge and tapering chord; conventional tail. Pitch con-trol by elevator on tail; yaw control by fully flying rudder; no separate roll control; control inputs through stick for pitch/yaw. Wing braced from below by struts; wing profile; 75% double-surface. Undercarriage has three wheels in tricycle formation; no suspension on any wheels. Push-right go-right nosewheel steering independent from yaw control. No brakes. Aluminium-tube framework, without pod. Engine mounted below wing driving pusher propeller.
The Cloudhopper is a simple homebuilt tube-and-dacron design with pedals reserved for ground steering, all flying being done with the stick. The machine has progressed through various stages - Mk.I, II and III, the principal difference between the machines is the tailplane design, which was initially a tubular structure. Peter was not satisfied with the rigidity of this and replaced it with a fabricated box-section structure to create the MkII.
Although this proved more rigid than its predecessor, it too was rejected as too complex and in 1983 Peter was working on a MkIII design, reverting to a tubular empennage but with greater rigidity than the MkI. The Mk.III will also feature stronger engine mountings, which are being designed to withstand 15g in accordance with the UK microlight airworthiness regulations.
Engine: Robin EC25PS, 18.5 hp at 5500 rpm.
Prop-eller diameter 42 inch, 1.06 m (3-blade).
V-belt reduction, ratio 2.2/1.
Power per unit area 0.11 hp/sq.ft, 1.3 hp/sq.m.
Fuel capacity 2.4 US gal, 2.0 Imp gal, 9.1 litre.
Length overall 14.4 ft, 4.39 m.
Height overall 4.8ft, 1.45m.
Wing span 27.7ft, 13.12m.
Chord at root 7.64ft, 2.33m.
Chord at tip 4.0ft, 1.22m.
Dihedral 6 degs.
Sweepback 15 degs.
Tailplane span 8.2 ft, 2.51 m.
Rudder height 4.1 ft, 1.26 m.
Total wing area 161 sq.ft, 15.0 sq.m.
Rudder area 6.7 sq.ft, 0.63 sq.m.
Tailplane area 13.5 sq.ft, 1.26 sq.m.
Total elevator area 9.2 sq.ft, 0.86 sq.m.
Wing aspect ratio 5.8/1.
Wheel track 4.4ft, 1.33m.
Nosewheel diameter overall 10 inch, 25 cm.
Main wheels diameter overall 10 inch, 25 cm.
Empty weight 217 lb, 98 kg.
Max take-off weight 450 lb, 204kg.
Payload 233 lb, 106 kg.
Max wing loading 2.80lb/sq.ft, 13.6 kg/sq.m.
Max power loading 24.3 lb/hp, 10.9kg/hp.
Load factors +4.0, -2.0 design.