PODEŠVA UL DANDY (TULÁK) and UL CUBBY (PIPER)

TYPE: Side-by-side ultralight/kitbuilt; tandem-seat ultralight.

PROGRAMME: Tulák certified 21 February 1996 and Piper 24 March 1998. Variations of the design are marketed by HB Flugtechnik of Austria as the Amigo and Cubby. First factory-built aircraft (OZ-ZUD 11) produced in 1998.

CURRENT VERSIONS: UL Tulák: Side-by-side seats; factory-built or kit. Marketed by HB as Dandy. English name: Rambler.
UL Piper: Tandem seats; otherwise as Tulák. No kit version. German name Tandem Tulák. Span 9.82 m (32 ft 2½ in); length 5.96 m (19 ft 6½ in); maximum cruising speed 70 kt (130 km/h; 81 mph). Engine options include 58.8 kW (78.9 hp) or 73.5 kW (98.6 hp) BMW; 58.8 kW (78.9 hp) Verner; 62.5 kW (83.8 hp) Tatra; and 51.5 kW (69.0 hp) Limbach. Marketed by HB as Cubby.

CUSTOMERS: Total 55 kits and complete aircraft built by end of 2002; ninth factory-built machine was registered in Poland in 2002 and completed in 2003. Known sales in Czech Republic, France, Germany and Poland.

Data apply to both Tulák and Piper, except where indicated.

DESIGN FEATURES: High, constant-chord wing braced by V struts; optional tapered or downturned wingtips. Wings fold back for storage and transportation. Resemble Piper designs of 1940s/1950s.
Clark Y wing section, thickness/chord ratio 12.5 per cent.

FLYING CONTROLS: Conventional and manual. Flight-adjustable trim tab in each elevator. Plain flaps.

STRUCTURE: Fabric-covered metal tube fuselage; two-spar wooden wing; engine cowling metal; some composites.

LANDING GEAR: Tailwheel type; fixed. Two faired side Vs hinged to lower longerons, plus half-axles sprung under centreline with bungee cord. Steerable tailwheel; 420x150 mainwheels with bungee suspension and cable-operated brakes. Mainwheel spats optional.

POWER PLANT: One 37.0 kW (49.6 hp) Rotax 503 UL-2V engine; SportProp three-blade, ground-adjustable pitch, glass fibre propeller. Fuel capacity 50 litres (13.2 US gallons; 11.0 Imp gallons).

DIMENSIONS, EXTERNAL:

  • Wing span: tapered tips: 9.60 m (31 ft 6 in)
    • downturned tips: 9.40 m (30 ft 10 in)
  • Width, wings folded: 3.10 m (10 ft 2 in)
  • Length overall: 5.60 m (8 ft 4½ in)
  • Height overall: 2.00 m (6 ft 6¾ in)

DIMENSIONS, INTERNAL:

  • Cabin max width: Tulák: 1.14 m (3 ft 9 in)
    • Piper: 0.70 m (2 ft 3½ in)

AREAS:

  • Wings, gross: 13.00 m² (139.9 sq ft)

WEIGHTS AND LOADINGS:

  • Weight empty: Tulák: 255 kg (562 lb)
    • Piper: 265 kg (584 lb)
  • Max T-O weight: both: 450 kg (992 lb)

PERFORMANCE (both):

  • Never-exceed speed (VNE): 89 kt (165 km/h; 102 mph)
  • Econ cruising speed: 59 kt (110 km/h; 68 mph)
  • Stalling speed, flaps down: 33 kt (60 km/h; 38 mph)
  • Max rate of climb at S/L: 300 m (984 ft)/min
  • T-O run: 65 m (215 ft)
  • Landing run: 60 m (200 ft)
  • g limits: +6/-4