The Tyro is a high wing strut braced tail dragger. Construction is of aluminium with a constructed main spar, pressed ribs and stressed skin leading edge. Structual members are all bolted or pop riveted with no welding required. Covering is fabric material stretched over the frame. Undercarriage suspension has bungee rubbers on main wheels. Aircraft can be assembled and disassembled in seven minutes for storage and trailering. A cockpit pod has been included for pilot protection.

Mk.II
Engine: Rotax 447, 43 hp.
Prop: 68 cm x 28 cm pitch.
Wing span: 8.9 m, 10.5 sq m.
Length: 5.33m.
Weight: 113kgs.
Fuel capacity: 20 ltr.
Econ cruise speed: 56 kts.
Stall: l9kts.
Construction time: 100 hrs.
ROC 1100 fpm.

Side by side two-seater. Push right go right nosewheel steering connected to yaw control. Aluminium tube framework without pod. The prototype Snoop two seater was first shown in August 1982 at Oshkosh and was available as a kit requiring 40h for assembly. The wing has been enlarged compared with the Snoop and Snoop+.

The prototype was fitted with a Cuyuna 430R but the Eastern Ultralight brochures mention the Snoop II as being fitted with the new two cylinder ULII 02 from the same manufacturer, with a tuned exhaust and producing up to 45 hp. Not being classifiable as a microlight in the USA (its empty weight is 268 lb), this dual control two seater with centre mounted throttle needs a pilot who is a licence holder.

Gallery / Manuals / Snoop II Manual

Gallery

Engine: Cuyuna ULII 02, 45 hp at 6200 rpm.

Engine: Cuyuna 430R, 40 hp.
Prop¬eller diameter and pitch 54×27 inch, 1.37 x 0.68 m.
Belt reduction, ratio 2.0/1.
Power per unit area 0.23 hp/sq.ft , 2.5 hp/sq.m .
Fuel capacity 5.0 US gal, 4.2 Imp gal, 18.9 litre.
Length overall 17.2 ft, 5.23 m.
Height overall 8.6ft, 2.59m.
Wing span 39.0ft, 11.88m.
Constant chord 5.0ft, 1.52m.
Dihedral 7 deg.
Sweepback 0 deg.
Total wing area 195sq.ft, 18.1sq.m.
Total spoiler area 3.0 sq.ft, 0.28 sq.m.
Rudder area 6.0 sq.ft, 0.56 sq.m.
Total elevator 6.0 sq.ft, 0.56 sq.m.
Wing aspect ratio 7.8/1.
Wheelbase 6.7 ft, 2.04 m.
Nosewheel diameter overall 12 inch, 30 cm.
Main wheels diameter overall 14 inch, 35 cm.
Floats, dimensions 11 x 2 ft, 3.35 x 0.61 m.
Skis, dimensions 4 x 1 ft, 1.22 x 0.30 m.
Empty weight 268 lb, 122kg.
Max take off weight 688 lb, 312kg.
Payload 420 lb, 190kg.
Max wing loading 3.52 lb/sq.ft, 17.2 kg/sq.m.
Max power loading 15.3 lb/hp, 6.9kg/hp.
Load factors +5.5, 3.5 design; +6.0, 4.0 ulti¬mate.
Max level speed 50 mph, 80 kph.
Never exceed speed 55 mph, 88kph.
Max cruising speed 45mph, 72kph.
Economic cruising speed 40mph, 64kph.
Stalling speed 17 mph, 27 kph.
Max climb rate at sea level 600ft/min, 3.0m/s.
Take off distance 100 ft, 30 m.
Landing distance 125 ft, 38 m.
Service ceiling 10,000 ft, 3050 m.
Range at average cruising speed 100 mile, 160 km.

Roll control by ailerons. Double surface wing with flaps. Presented at the Sun ‘n’ Fun in March 1983 the Snoop+ model differs from the Snoop by having a smaller span double surface wing fitted with ailerons and flaps. Like the earlier model, it also uses the Cuyuna ULII 02 with a tuned exhaust. The options are the same as those offered on the Snoop. As would be expected, the Snoop+ wing is much more costly to build than a single ¬surface design and as a result the Snoop+ cost exactly $1000 more than the Snoop: $5790 in 1982.

Engine: Cuyuna ULII 02, 35 hp at 6200 rpm.
Propeller diameter and pitch 54×27 inch, 1.37 x 0.68 m
Belt reduction, ratio 2.0/1.
Max static thrust 200 lb, 91 kg.
Power per unit area 0.23hp/sq.ft, 2.5 hp/sq.m.
Fuel capacity 5.0 US gal, 4.2 Imp gal, 18.9 litre.
Length overall 16.2 ft, 4.90 m.
Height overall 8.6ft, 2.59m.
Wing span 30.0ft, 9.14m.
Constant chord 4.0ft, 1.22m.
Dihedral 1deg.
Sweepback 0 deg.
Total wing area 150 sq.ft, 13.9sq.m.
Total aileron area 20.0sq.ft, 1.86sq.m.
Rudder area 6.0sq.ft, 0.56sq.m.
Total elevator area 6.0 sq.ft, 0.56 sq.m.
Wing aspect ratio 5.9/1.
Wheelbase 5.6 ft, 1.67 m.
Nosewheel diameter overall 12 inch, 30 cm.
Main wheels diameter overall 14 inch, 35 cm.
Floats, dimensions 9 x 2 ft, 2.74 x 0.61 m.
Skis, dimensions 3 x 1 ft, 0.91 x 0.30 m.
Empty weight 248 lb, 112kg.
Max take off weight 528 lb, 239 kg.
Payload 280 lb, 127 kg.
Max wing loading 3.5 lb/sq.ft, 17.1 kg/sq.m.
Max pow¬er loading 15.1 lb/hp, 6.82 kg/hp.
Load factors +5.5 3.5 design; +6.0, 4.0 ultimate.
Max level speed 60 mph, 97 kph.
Never exceed speed 63 mph, 101 kph.
Max cruising speed 55 mph, 88 kph.
Economic cruising speed 45mph, 72kph.
Stalling speed 25 mph, 40 kph.
Max climb rate at sea level 1000ft/min, 5.1m/s.
Take off distance 100 ft, 30 m.
Landing distance 150 ft, 45 m.
Service ceiling 10,000 ft, 3050 m.
Range at average cruising speed 175 mile, 281 km.

Single seat single engined high wing monoplane with conventional three axis control. Wing has unswept leading and trailing edges, and constant chord; cruciform tail. Pitch control by elevator on tail; yaw control by fully flying rudder; roll control by one third span spoilers; control inputs through stick for pitch/roll and pedals for yaw. Wing braced from above by kingpost and cables, from below by cables; wing profile single surface. Undercarriage has three wheels in tricycle formation; with additional tailskid; tension bar suspension on all wheels. No ground steering. No brakes. Aluminium tube framework, with optional pod. Engine mounted above wing driving pusher propeller.

Eastern Ultralights Snoop Article

The prototype of the Snoop single seater was shown at Sun ‘n’ Fun at Lakeland, Florida, in 1981, though at that time it had not made its first flight. At that time it was a two axis ultralight without spoilers and with a different structure and tail surfaces from the eventual production model. After several important modifications, it is today offered in the form of a kit requiring 30h for assembly, according to Eastern Ultralights.
At Sun ‘n’ Fun in March 1983, Eastern Ultralights announced the replacement of the Cuyuna 430R engine, previously standard on the Snoop, with the new ULII 02 from the same manufacturer. Options available are floats, skis, a pod, completely closed cockpit, wheel fairings, electric start and a strobe.
Price in 1982 $4790 as kit.

Engine: Cuyuna ULII 02
Max power 35 hp at 6200 rpm.
Prop¬eller diameter and pitch 54×27 inch, 1.37×0.68m.
V belt reduction, ratio 2.0/1.
Max static thrust 200 lb, 90.6 kg.
Power per unit area 0.21 hp/sq.ft, 2.3 hp/sq.m.
Fuel capacity 5.0 US gal, 4.2 Imp gal, 18.9 litre.
Length overall 16.2 ft, 4.90 m.
Height overall 8.6ft, 2.59m.
Wing span 33.0ft, 10.05m.
Constant chord 5.0ft, 1.52m.
Dihedral 7 deg
Sweepback 0 deg.
Total wing area 165 sq.ft, 15.3sq.m.
Total spoiler area 3.0sq.ft, 0.28sq.m.
Rudder area 6.0 sq.ft, 0.56sq.m .
Total elevator area 6.0 sq.ft, 0.56 sq.m.
Wing aspect ratio 6.6/1.
Wheelbase 5.6 ft, 1.67 m.
Nosewheel diameter overall 12 inch, 30cm.
Main wheels diameter overall 14 inch, 35 cm.
Floats, dimensions 9 x 2 ft, 2.74 x 0.61 m.
Skis, dimensions 3 x 1 ft, 0.91 x 0.30 m.
Empty weight 238 lb, 108kg.
Max take off weight 518 lb, 235kg.
Payload 280 lb, 127kg.
Max wing loading 3.2 lb/sq.ft, 15.3 kg/sq.m.
Max pow¬er loading 14.8 lb/hp, 6.7 kg/hp.
Load factors +5.5, 3.5 design; +6.0, 4.0 ultimate.
Max level speed 50 mph, 80 kph.
Never exceed speed 55 mph, 88 kph.
Max cruising speed 45 mph, 72 kph.
Economic cruising speed 40 mph, 64 kph.
Stalling speed 18 mph, 29 kph.
Max climb rate at sea level 600ft/min, 3.0m/s.
Take off dist: 75 ft, 23 m.
Landing distance 100 ft, 30 m.
Service ceiling 10,000 ft, 3050 m.
Range at average cruising speed 125 mile, 201 km.

Mark Beierle designed a stall and spin resistant aircraft with responsive ailerons provide roll control throughout a stall.
Of all metal construction, the Thunder Gull 2000 and Odyssey models maintain the same control. All of the Earthstar Aircraft models are fun cross-country machines and have been flown from coast-to-coast many times.
Flight tested to a G loading of +5.9 and -3 and are designed to +6 and -4 yield. The ultralight model has been certified to meet the FAA FAR-103 requirements. VNE for all models is 120 mph.
Options include engine, instruments, propeller, side windows, and parachute.
Available as a kit or ready to fly.
All kits can be registered Experimental LSA.
The Thunder Gull J first flew in March 1987.
The two seat Thunder Gull JT2 had removable wings and first flew in June 1989.
The Soaring Gull has a cantilevered removable wing. The wingspan is 8 feet longer than the Thunder Gull J. The Soaring Gull first flew in November 1993. The Soaring Gull was available in kit form (and also as a finished product) at US $10,580.

The Odyssey first flew in April 1995 and features staggered, side-by-side seating to provide more useable cockpit space.

Gallery

Gull 2000 Single Seat
Engine Used; Hirth F33
HP/HP Range; 28/25-52
Top Speed; 63 mph
VNE: 55 kt / 63 mph / 101 kmh
Cruise Speed; 55 kt / 63 mph / 101 kmh
Stall Speed; 23 kt / 27 mph / 43 kmh
Range; 165 mph
Rate of Climb; 700 fpm / 4 m/s
Glide Ratio: 12:1
Take-Off Distance; 125 ft
Landing Distance; 75 ft
Take-off distance (50ft obstacle): 250 ft / 76 m
Landing distance (50ft obstacle): 200 ft / 61 m
Service Ceiling; 14,000 ft
Lift/Drag Ratio; 11.8
Fuel Capacity; 5 gal
Fuel Consumption; 1.7 gph
Empty Weight; 112 kg / 248 lbs
MTOW Weight: 249 kg / 550 lbs
Height; 5 ft 3 in
Length; 18 ft 3 in
Wing Span; 20 ft
Wing Area; 95 sq ft
Cockpit width: 27 in
Building Time; 150 hrs

Soaring Gull
Engine: Rotax 277, 26 hp.
HP range: 25-52.
Speed max: 63 mph.
Cruise: 55 mph.
Range: 180 sm.
Stall: 23 mph.
ROC: 850 fpm.
Take-off dist: 115 ft.
Landing dist: 70 ft.
Service ceiling: 16,000 ft.
Fuel cap: 5 USG.
Weight empty: 254 lbs.
Gross: 550 lbs.
Height: 5.25 ft.
Length: 17.58 ft.
Wing span: 28 ft.
Wing area: 133 sq.ft.
Seats: 1.
Landing gear: nose wheel.
Glide ratio: 16:1.

Soaring Gull 2000 Single Seat
Top Speed; 63 mph
Cruise Speed; 63 mph
Stall Speed; 26 mph
Range; 180 mph
Rate of Climb; 850 fpm
Take-Off Distance; 115 ft
Landing Distance; 70 ft
Service Ceiling; 16,000 ft
Lift/Drag Ratio; 16.1
Engine Used; Hirth F33
HP/HP Range; 28/25-52
Fuel Capacity; 5 gal
Fuel Consumption; 1.7 gph
Empty Weight; 254 lb
Gross Weight; 550 lb
Height; 5 ft 3 in
Length; 18 ft 3 in
Wing Span; 28 ft
Wing Area; 133 sq ft
Building Time; 150 hrs

Odyssey Two Seat Side-by-Side
Engine Used; HKS 700 E
HP Range; 60-100 hp
VNE: 104 kt / 120 mph / 193 kmh
Top Speed; 87 mph
Cruise: 76 kt / 87 mph / 140 kmh
Stall: 32 kt / 37 mph / 60 kmh
Range; 348 miles
Rate of Climb; 900 fpm / 5 m/s
Take-off distance (50ft obstacle): 200 ft / 61 m
Landing distance (50ft obstacle): 175 ft / 53 m
Service Ceiling; 15,500 ft
Lift/Drag Ratio; 11.1
Fuel Capacity; 10 USgal
Fuel Consumption; 2.5 gph
Empty weight: 209 kg / 460 lbs
MTOW Weight: 454 kg / 1000 lbs
Height; 5 ft 6 in
Length; 18 ft 3 in
Wing Span; 26 ft
Wing Area; 124 sq ft
Seats: 2
Glide Ratio: 11:1
Cockpit width: 41 in
Building Time; 300 hrs
Landing gear: nose wheel

Thunder Gull J
Engine: Rotax 277, 26 hp.
HP range: 26-52.
Speed max: 63 mph.
Cruise: 55 mph.
Range: 165 sm.
Stall: 25 mph.
ROC: 700 fpm.
Take-off dist: 125 ft.
Landing dist: 75 ft.
Service ceiling: 14,000 ft.
Fuel cap: 5 USG.
Weight empty: 252 lbs.
Gross: 550 lbs.
Height: 5.25 ft.
Length: 17.25 ft.
Wing span: 17.58 ft.
Wing area: 95 sq.ft.
Seats: 1.
Landing gear: nose wheel.

Thunder Gull JT2
Engine: Rotax 503, 52 hp.
HP range: 52-80.
Speed max: 87 mph.
Cruise: 87 mph.
Range: 275 sm.
Stall: 34 mph.
ROC: 800 fpm.
Take-off dist: 200 ft.
Landing dist: 175 ft.
Service ceiling: 14,500 ft.
Fuel cap: 10 USG.
Weight empty: 398 lbs.
Gross: 850 lbs.
Height: 5.25 ft.
Length: 17.58 ft.
Wing span: 24 ft.
Wing area: 114 sq.ft.
Seats: 2.
Landing gear: nose wheel.

Thunder Gull Odyssey
Engine: Rotax 503, 52 hp.
HP range: 40-80.
Speed max: 87 mph.
Cruise: 87 mph.
Range: 300 sm.
Stall: 34 mph.
ROC: 900 fpm.
Take-off dist: 200 ft.
Landing dist: 175 ft.
Service ceiling: 15,500 ft.
Fuel cap: 10 USG.
Weight empty: 420 lbs.
Gross: 1000 lbs.
Height: 5.92 ft.
Length: 18 ft.
Wing span: 26 ft.
Wing area: 124 sq.ft.
Seats: 2.
Landing gear: nose wheel.

Odyssey
Engine: Rotax 503, 52 hp
Wing span: 7.92 m
Wing area: 11.53 sq.m
MAUW: 453 kg
Empty weight: 190 kg
Fuel capacity: 38 lt
Seats: 2
Max speed: 140 kph
Cruise speed: 140 kph
Minimum speed: 54 kph
Climb rate: 4.5 m/s
Fuel consumption: 10 lt/hr
Kit price (1998): US$14,900