Andrew Szep designed and built the HFC-125 over a five year period, finished in 1979.
Registered G-BCPX PFA 012-00019/ msn AS.001, power was a Lycoming O-290-G engine.
The registration was cancelled on 2000-01-11 and it resides in the Magyar Műszaki és Közlekedési Múzeum in Hungary in 2014.
The SR-5 features a counter-balanced crankshaft, two piece, of nickel chrome steel SAE 3140, 1 25/32 inch in diameter.
The cylinders are of close-grained nickel cast iron with the head cast integral.
Equipment suppied was carburetter, magnetos, propeller hub, oil pump, spark plugs, and wires.
A starter was available at extra cost.
Type: 5 cylinder static radial L head
Rating: 70 hp at 1800 rpm
Displacement: 315 cu.in
Compression ratio: 4.8-1
Bore: 4 1/8 in
Stroke: 4 3/4 in
Diameter: 31 in
Weight: 186 lb complete
Fuel consumption: not more than .60 lb/hp/hr
Oil consumption: not more than .016 lb/hp/hr
Lubrication: Gear type oil and scavenger pumps
Ignition: Dual Scintilla magneto
Carburation: Stromberg, 1 ½ balanced
Spark plugs: 2 per cylinder B.G.
The SR-3 was specially designed for compactness and light weight. The counter-balanced crankshaft is two piece, of nickel chrome stell SAE 3140. 1 37/64 inch in diameter.
The cylinders are of close-grained nickel cast iron with the head cast integral.
Equipment suppied was carburetter, magnetos, propeller hub, oil pump, spark plugs, and wires.
A starter was available at extra cost.
Type: 3 cylinder static radial, L Head, air cooled
Rating: 40 hp at 1800 rpm
Displacement: 190 cu.in
Compression ratio: 4.8
Bore: 4 1/8 in
Stroke: 4 3/4 in
Diameter: 29 1/2 in
Weight: 117 lb dry / 142 lb complete
Fuel consumption: not more than .60 lb/hp/hr
Oil consumption: not more than .016 lb/hp/hr
Lubrication: Gear type oil and scavenger pumps
Ignition: Dual Scintilla magneto
Carburation: Stromberg, 1 ½ balanced
Spark plugs: 2 per cylinder
In 1930, at Holland, Michigan, Szekely Corp made small single-seat low-wing cantilever monoplane called Flying Dutchman.
Priced at $2,200, three were built, registered NX4448, N9455, and N910.
An open cockpit, low wing monoplane powered by a 150hp Hisso A, one was built for W C Williams of San Antonio TX (N910). It crashed in October 1927 as a reported “total washout.”
Engine: 40hp Szekely SR-3
Wingspan: 26’0″
Length: 18’6″
Useful load: 215 lb
Max speed: 80 mph
Cruise: 70 mph
Stall: 25 mph
Range: c.300 mi
Seats: 1
USA
1928: (Otto E) Szekely Aircraft & Engine Co, on acquisition of Burke Engr Co, Holland MI.
In 1930, at Holland, Michigan, made small single-seat low-wing cantilever monoplane called Flying Dutchman.
1932: Filed bankruptcy.
The Székely IV Parasol of 1913 was designed and built by the Hungarian Mihály Székely (Hungary then part of the K.u.k – Austro-Hungary). A typical parasol wing machine with the pilot and passenger sitting in a nacelle beneath the wing-tractor configuration, with the engine high before the wing and petrol tanks above.
1913 Szekely IV 2-seater “parasol” monoplane received 2nd altitude prize achieving 610 meters.
Span: 36’1″
Length: 28’11”
Weight empty: 521 lbs
Speed: 44 mph
Evolved from the Vidervol-Szaraz VS-1, the Szaraz SD-1A Daphne is a homebuilt aircraft that was designed by Art Szaraz and Bernie Darmstadt for efficiency competitions.
The Daphne is a two place side-by-side configuration strut-braced high-wing, conventional landing gear equipped homebuilt. The fuselage uses welded steel tubing with aircraft fabric covering. The wings are wood, with one-piece plywood ribs. Both ailerons and flaperons have been installed on the design.
The first three examples were built on the same jigs at Art Szaraz’s workshop. At least fifteen were built. At least 26 were under construction by Jan 1970.
Known examples:
N960Z (c/n 1) built by Arpad Szaraz, ff: 1963
N962Z built by Nick Stanich, ff: 2/28/65
N961Z built by B D Darmstadt, ff: 6/18/65
SD-1A Daphne
Engine: 1 × Continental C-85-12F, 85 hp (63 kW)
Propeller: 2-blade
Wingspan: 26 ft (7.9 m)
Wing area: 130 sq ft (12 sq.m)
Airfoil: NACA 4412
Length: 19 ft 7 in (5.97 m)
Empty weight: 820 lb (372 kg)
Gross weight: 1,300 lb (590 kg)
Maximum speed: 130 kn; 241 km/h (150 mph)
Cruise speed: 104 kn; 193 km/h (120 mph)
Stall speed: 35 kn; 64 km/h (40 mph)
Never exceed speed: 148 kn; 274 km/h (170 mph)
Service ceiling: 14,500 ft (4,400 m)
Rate of climb: 1,000 ft/min (5.1 m/s)
Capacity: 2
SDS-1A Daphne
Engine: 90hp Continental
Wingspan: 26’0″
Length: 19’0″
Useful load: 520 lb
Cruise: 125 mph
Stall: 40 mph
Range: 400 nm
The 1936 homebuilt single-place, open cockpit biplane built by Sig Syvrud, was designed by Al Schauss.
Engine: Szekely
Wingspan: 18’0″
Top speed: 90 mph
Cruise: 80 mph
Stall: 35 mph
Seats: 1
A conventional, high-wing, strut-braced tail-dragger powered by a variety of Rotax engines. Built primarily out of tube-aluminium with Stits covering.
The Swiss Aerolight ULM was a two-seater with a Rotax 503. Four sets of plans were sold.
In June 2012 the two occupants of the ULM, including builder Dominique Loup, perished after the crash of their aircraft in the town of Saint-Mathieu-de-Tréviers, about twenty kilometers north of Montpellier. The aircraft had taken off a little earlier from the aerodrome of Peak Saint-Loup.
The fatal accident stopped the development.
All Aero 