EKW C-35

In 1934, the Swiss air arm, or Fliegertruppe, called upon the EKW (Eidgenossische Konstruktions Werkstätte, or Federal Construction Workshop) to design a new airplane that could combine the roles of fighter, reconnaissance and tactical support aircraft. EKW’s efforts to fulfill such a difficult requirement produced two very different blueprints. One, the C-35, was a sturdy but conventional two-seater biplane first flown in 1935. The other was the C-36. The Swiss government judged the C-35 a surer prospect for swift development.
The biplane was fast becoming outmoded, and within 3½ years the Swiss government accepted the fact it had probably ordered the wrong aircraft. Two prototypes and 88 production C 35s were built, the first in 1936 and the last eight being assembled from spares in 1942. Of similar mixed construction to the C.V E, the C 35 was powered by the 860 hp Saurer built Hispano Suiza 12Ycrs, with a 20 mm (0.79in) cannon firing through the hub of the three blade fixed pitch propeller. Two 7.5 mm (0.295 in) machine guns were fixed under the lower wing, and a third was aimed by the observer after folding forward the canopy over the rear cockpit. A bomb load of six 100kg (220 1b) bombs could be carried. The C 35 served until 1949.

Span: 13.0 m (42 ft 712 in) Length: 9.3 m (30 ft 4 in) Gross weight: 2500 kg (5512 lb) Maximum speed: 340 km/h (211 mph)

Early Bird Fokker D-VII

Designed by Dennis Wiley and built by Early Bird Aviation. LSA approved.

Engine: Rotax 277, 28 hp.
HP range: 28-36.
Height: 6.67 ft.
Length: 16.5 ft.
Wing span: 24 ft.
Wing area: 168 sq.ft.
Weight empty: 250 lbs.
Gross: 525 lbs.
Fuel cap: 5 USG.
Speed max: 63 mph.
Cruise: 53 mph.
Range: 85 sm.
Stall: 20 mph.
ROC: 1000 fpm.
Take-off dist: 80 ft.
Landing dist: 150 ft.
Service ceiling: 12,500 ft.
Seats: 1.
Landing gear: tail wheel.

Engine: Rotax 503, 50 hp
HP range: 28-50
Length: 16.5 ft
Wing span: 24 ft
Wing area: 168 sq.ft
Empty weight: 265 lb
Gross weight: 525 lb
Fuel capacity: 5 USG
Cruise: 65 mph
Stall: 22 mph
Range: 100 sm
Rate of climb: 1000 fpm
Takeoff dist: 75 ft
Landing dist: 150 ft
Cockpit width: 20 in
Landing gear: tailwheel

Early Bird SE-5A

A tube and fabric ultralight designed by Dennis Wiley, built by Early Bird Aviation.

Engine: Rotax 277, 28 hp.
HP range: 28-36.
Height: 6.67 ft.
Length: 16.5 ft.
Wing span: 24 ft.
Wing area: 168 sq.ft.
Weight empty: 250 lbs.
Gross: 525 lbs.
Speed max: 63 mph.
Cruise: 53 mph.
Range: 85 sm.
Stall: 20 mph.
ROC: 1000 fpm.
Take-off dist: 80 ft.
Landing dist: 150 ft.
Service ceiling: 12,500 ft.
Fuel cap: 5 USG.
Seats: 1.
Landing gear: tail wheel.

Engine: Rotax 503, 50 hp
HP range: 28-50
Length: 16.5 ft
Wing span: 24 ft
Wing area: 168 sq.ft
Empty weight: 265 lb
Gross weight: 525 lb
Fuel capacity: 5 USG
Cruise: 65 mph
Stall: 22 mph
Range: 100 sm
Rate of climb: 1000 fpm
Takeoff dist: 75 ft
Landing dist: 150 ft
Cockpit width: 20 in
Landing gear: tailwheel

Early Bird Spad XIII

A copy of the Spad XIII designed by Dennis Wiley. Available as either of SE-5A, Fokker D-VII, or Spad XIII with the same specifications.

167 were built by Early Bird before manufacture and marketing was taken over by Loehle. Loehle shipped kits pre-built to covering stage. LSA approved.

Engine: Rotax 277, 28 hp.
HP range: 28-36.
Speed max: 63 mph.
Cruise: 53 mph.
Range: 85 sm.
Stall: 20 mph.
ROC: 1000 fpm.
Take-off dist: 80 ft.
Landing dist: 150 ft.
Service ceiling: 12,500 ft.
Fuel cap: 5 USG.
Weight empty: 250 lbs.
Gross: 525 lbs.
Height: 6.67 ft.
Length: 16.5 ft.
Wing span: 24 ft.
Wing area: 168 sq.ft.
Seats: 1.
Landing gear: tail wheel.

Engine: Geo Tracker, 80 hp.
HP range: 80-100.
Speed max: 90 mph.
Cruise: 80 mph.
Range: 270 sm.
Stall: 45 mph.
ROC: 600 fpm.
Take-off dist: 300 ft.
Landing dist: 400 ft.
Service ceiling: 14,000 ft.
Fuel cap: 10 USG.
Weight empty: 550 lbs.
Gross: 800 lbs.
Height: 6.4 ft.
Length: 16.25 ft.
Wing span: 20.17 ft.
Wing area: 142 sq.ft.
Seats: 1.
Landing gear: tail wheel.

Loehle Spad XIII
Cruise: 65 mph
Stall: 22 mph
Range: 100 sm
Rate of climb: 1000 fpm
Takeoff dist: 75 ft
Landing dist: 150 ft


Engine: Rotax 503, 50 hp
HP range: 28-50 hp
Fuel capacity: 5 USG
Empty weight: 265 lb
Gross weight: 525 lb
Length: 16.5 ft
Wing span: 24 ft
Wing area: 168 sq.ft
Seats: 1
Cockpit width: 20 in
Landing gear: tail wheel

Early Bird Jenny

Designed by Dennis Wiley, the Jenny is a 2/3 scale WW I replica biplane. The fuselage construction is welded 4130 steel tube. Wing construction uses aluminium leading and trailing edge spars, and stamped aluminium ribs. The craft is covered in standard aircraft fabric. Building times are reported to be 400 to 600 hours.

A construction video is available which will cut building time considerably. The craft can be powered by the Rotax 503/582, or the AMW. The designer has completed the installation of a Chevy Geo engine on his own craft and had about 40 hours flying time on it.

The Geo is reported to put out about 65 HP and come in at a weight of 135 lbs. complete. The Jenny is a tail dragger, in a tractor configuration. Controls are stick and rudder.

The craft can be built from a set of plans and raw materials or was available in kit form.

The Jenny takes off in about 300 feet climbs at about 600 feet per minute and cruises in the 65/70 m.p.h. range.
The designer indicates that the craft has been tested to +6 and -4 G’s ultimate. Apparently 400 plan sets have been sold 40 aircraft are flying, with another 27 under construction.

By 2009, the Jenny was marketed by Loehle Aircraft Corp who carried the design for a while.

John-Hal Barfield
bjohnhal@aol.com
I need plans 2/3 Jenny I would like to put back in the air
12 May 2018

Variation:
Timber Tiger Aircraft Jenny

Engine: Rotax 503 CDI, 46 hp.
HP range: 46-65.
Empty Weight: 419 lbs.
Gross Weight: 800 lbs.
Wing Span: 27 ft. 6 in.
Wing Area: 175 sq. ft.
Wing Loading: 4.6 lbs. sq. ft.
Length: 18.33 ft.
Height: 7 ft.
Speed max: 70 mph.
Cruise Speed: 65 m.p.h.
Stall Speed: 35 m.p.h.
VNE: 80 m.p.h.
Range: 180 sm.
ROC: 450 fpm.
Take-off dist: 250 ft.
Landing dist: 300 ft.
Fuel cap: 10 USG.
Seats: 2.
Landing gear: tail wheel.

Engine: Rotax 503, 52 hp
Wing span: 8.3 m
Wing area: 16.3 sq.m
Empty weight: 190 kg
MAUW: 362 kg
Fuel capacity: 38.8 lt
Max speed: 130 kph
Cruise speed: 100 kph
Minimum speed: 60 kph
Climb rate: 4 m/s
Seats: 2
Fuel consumption: 11 lt/hr
Plan price (1998): US$125
Kit price (1998): US$9100