PERFORMANCE

Payload

4 persons, 600 lb (272 kg) average. 750 lb (340 kg) max. 5 persons, 1000 lb (454 kg) gross overload.

 

Forward Speed

35 mph (56 km/hr) maximum recommended cruise.
30-45 mph (48 to 72 km/hr) mudflat, beach.
45 mph (72 km/hr) calm water.
30-40 mph (48 to 64 km/hr) land, short grass.
40-50 mph (64-80 km/hr) smooth ice.
30-45 mph (48-72 km/hr) firm snow.

 

Reverse Speed

25 mph (40 km/hr) calm water. (Deluxe Only)

 

Hump

6 sec, to reach 5 mph (9.7 km/hr) over calm water, with 400 lb (181 kg) payload.

 

Fuel Consumption

3.5 US gal/hr (13.3 l/hr) at cruising power.

 

Range-Endurance

81 miles (130 km), 3.25 hours on single tank13 US gal (49 l).

 

Static Thrust

140 lb (64 kg) 55 hp engine
160 lb (73 kg) 65 hp engine

 

 

LIMITING CONDITIONS

Wind

25 mph (39 km/hr) over hard surfaces, Beaufort force 5.

 

Sea State

Waves 2 ft (610 mm) chop, otherwise WMO Code 3.

 

Temperature

-30° F to +110° F (-34° C +43° C).

 

Slope-Gradient

1 in 6 (16.7%), standing start, smooth surface, 400 lb (181 kg) payload, 65 HP engine.

 

Surface Type

Useful for transportation on salt or fresh water of any depth, sand, mud, grass, swamp, flat desert, ice, and snow.

 

 

SYSTEMS

Control

Handlebar connected to stainless steel push-pull cable for 4 blade cascade rudder control. Twist grip throttle with adjustable-tension cruise setting. Hand lever operated, electronic fly-by-wire reverse thrust system – advantageous for operation over ice, horizontal buckets generate 60% reverse thrust for static hovering, braking, backing up or differential thrust for steering enhancement. Trim by operator movement (in-line seat configuration) or by front seat movement (bench seat configuration side-by-side). Controls move from side to side for lateral trim.

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Flotation

US Coast Guard approved Urethane foam positive flotation 100% of average laden weight plus passenger compartment displacement buoyancy, 42% of average laden weight.

 

Bilge

Rear mounted 4 in (102 mm) diameter plastic screw “in-out” drain plug. Optional electric pump.

 

Electrical

Engine driven AC alternator, voltage regulator &rectifier 13V DC, 250 watts at 4000 rpm. Battery 235 AMP at zero degree F.

 

Cooling

Engine is air cooled by engine mounted belt driven fan.

 

Heating

None

 

Engine Deicing

Engine can be equipped with a deicing system.

 

Navigation

Optional bow and adjustable white stern light with US Coast Guard Certified Yellow Flashing Strobe, water proof search light plug, headlights, instrument panel lights, optional GPS. .

 

Fuel

Single Aluminum fuel tank with primer bulb and in-line replaceable type fuel filter.

 

Thrust

One, 28 in (711 mm) diameter, 9-blade Wingfan, 5Z. PAG, 45°/50°, axial fan, at 3000 rpm 55 hp and 65 hp version. Stator system, 10 blades.

 

Suspension

One third of total air supplied by integrated  Single Fan Lift/Thrust system is diverted to the lift air cushion, which is contained by an extended segmented (finger) skirt air cushion seal system. Skirt material is 8 oz/sq.yd. (267 gm/sqm) 400 denier pack-cloth. Average cushion pressure is 14 lb/sq ft (0.67 kPa)

 

Landing

Two heavy duty, fiberglass coated, parallel skids run full length of hull.

 

Power

model 2703, Hirth 521 cc, 55 hp (41 kw) @ 6200 rpm, 2-cycle 2-cylinder, air cooled, electric and manual start, aluminum engine, weight 82 lb (37.3 kg). Optional Hirth model 3203, 625 cc, 65 hp (49 kw) @ 6300 rpm carbureted or injected 82lb (37.3 kg). Spark plug, gap 0.022 in (0.55 mm). Maximum cylinder head temperature at spark plug 535° F (277°C), EGT 1300° F (704° C) . Transmission 34-tooth and 72-tooth hard anodized aluminum HTD sprockets on engine and fan shaft, joined by Carbon Fiber HTD Belt 720-8M-36.  Old Belt 720-8m-50. Fan shaft bearings – 1 in (25.4 mm) bore pillow block Sealmaster NP-16TC and 1 Asahi UEP205 16 .

 

Safety

2 lb (0.9 kg), dry powder fire extinguisher, ample positive flotation and stability, lanyard kill switch, non-slip floor, normal survival gear, all circuits are fused.

 

Air Filtration

Twin, large capacity, replaceable and reusable filters with splash guard. Type 0135-RC

 

Instrumentation

Marine key ignition switch, fuel, tachometer, cylinder head and exhaust gas temperature, hour-meter gauges. Optional volt meter.

 

 

PHYSICAL

Length

13 ft 8 in (4166 mm) on cushion, 12 ft (3658mm) off cushion.

 

Width

8 ft 4 in (2540 mm) on cushion, 6 ft 8 in (2032 mm) off cushion.

 

Height

4 ft 5 in (1346 mm) on cushion, 3 ft 9 in (1143 mm) off cushion. With cabin, 5 ft 2 in (1575 mm) on cushion, 4 ft 6 in (1372 mm) off cushion.

 

Cockpit

Length 7ft (2134 mm), Width 4 ft 2 in (1270 mm), Depth 1 ft 5 in (438mm)

 

Hover height

8 in (203 mm) hard structure clearance at full power.

 

Weight

510 lb +/- 15 lb (232 kg +/- 7 kg) Standard configuration.
555 lb +/- 15 lb (252 kg +/- 7 kg) With all options except cabin.

 

Noise

83dB(A) at 50 ft (15.2 m), SAE Standard J192a.

 

Fuel Capacity-Type

13 US gal (49 l) single Aluminum Tank, EPA compliant. premium unleaded gasoline preferred.

 

Oil

2 cycle mineral oil if available is preferred, if not use good quality (expensive) 2 cycle oil with NAMMA standard TC-W3. Mix ratio 40:1 gas and oil.