Spezio Tuholer

The Spezio Sport DAL 1 Tuholer is a two-place low-wing homebuilt aircraft using tube-and-fabric construction. A folding wing is incorporated to allow for trailering.[2]

DAL 1 Tuholer
Role Sport aircraft
National origin United States
Designer Tony Spezio
First flight May 2, 1961
Unit cost
approximately $3365 to build in 1971[1]

Development

The prototype aircraft was built for $287 using tubing from a Cessna UC 78, a Tri-Pacer propeller, wheels from a TG-6 glider, a Lycoming Ground Power unit and a variety of surplus materials. The nickname came from the president of the Experimental Aircraft Association remarking that the plane was a "tuholer".[3] (Link does not work)>

Design

The Tuholer is a tandem two-seat, strut-braced, low-wing, open cockpit aircraft with conventional landing gear. The dual control aircraft can be flown solo rear cockpit only. The fuselage is welded steel tubing with wooden stringers and fabric covering.[4] The dual wing spars are wood, with wood ribs and fabric covering. The fuel tank is made of fiberglass. The horizontal stabilizer uses a Piper Cub style screw jack for trim. The rear headrest can be built streamlined flush with the vertical stabilizer or tapered.[5]

Operational history

The designer flew the prototype 16 years.

Specifications (Spezio Tuholer)

Data from http://www.tuholer.com/speziotuholer.htm

General characteristics

  • Capacity: 2
  • Length: 18 ft 3 in (5.56 m)
  • Wingspan: 24 ft (7.3 m)
  • Empty weight: 820 lb (372 kg)
  • Gross weight: 1,200 lb (544 kg)
  • Powerplant: 1 × Lycoming , 125 hp (93 kW)
  • Propellers: 2-bladed

Performance

  • Maximum speed: 140 kn (160 mph, 260 km/h)
  • Cruise speed: 106 kn (122 mph, 196 km/h)
  • Stall speed: 39 kn (45 mph, 72 km/h)
  • Range: 350 nmi (400 mi, 640 km)
  • Rate of climb: 2,200 ft/min (11 m/s)

References
  1. Leo J. Kohn (Winter 1971). "The true cost of building your own plane". Air Trails: 63.
  2. Popular Mechanics: 94. February 1963. Missing or empty |title= (help)
  3. "Archived copy". Archived from the original on 2011-07-17. Retrieved 2010-06-01.CS1 maint: archived copy as title (link)
  4. "What kind of aircraft would you build". Air Progress Sport Aircraft. Winter 1971.
  5. Air Trails: 5. Winter 1971. Missing or empty |title= (help)

http://www.pilotfriend.com/experimental/acft6/38.htm

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