Sequoia F.8 Falco / Laverda F.8 Falco / Aeromere F.8 Falco / Aviamilano F.8 Falco

Sequoia Falco F8L

A two-place aircraft with an optional third seat for a child, the Falco of­fers an unbeatable combination of high-speed cross-country travel with complete aerobatic capability. Designed by an Italian, Stelio Frati in 1954, a Falco equipped with an optional Christen inverted fuel and oil system is capable of unlimited inverted flight and the full range of aerobatic maneuvers. Landing gear are fully retractable, activated by a simple mechanical system. Designer Frati has been responsible for such airplanes as the Waco Meteor/SF 260 and the F20 Pegaso.

Designed in 1955 and be­tween 1956 and 1968, 101 Falcos were built as production aircraft.

The initial F.8L Series 1 was produced by Aviamilano (20 built), along with 20 F.8.L series II development.

The F.8,L America was basically similar to the Series II but modified to CAR.Pt.3 requirements.

The F.8L Super Falco Series IV was generally similar to the The F.8,L America but with the 160 hp engine. 20 were built by Laverda.

Now earmarked for homebuilt construction in the United States through Sequoia Aircraft Corp., the Falco is made of wood, except for the firewall forward, the landing gear and the sliding canopy. Fuselage and wing skins are dacron. Power is supplied by either a 150- or 160-hp Lycoming behind a fixed-pitch or constant-speed prop. Gear and flaps are operated electrically.

Two examples of the Aviamilano F.8 Falco appeared in Britain during 1960.

Aviamilano F.8 Falco

On 25 April 1965, the first, I-TRIP, of ten F.8 Super Falco under construction by Vietri first flew.

Vietri F.8 Super Falco I-TRIP

The Falco has been produced in kit form since 1974.

September 1982

Price 1982: $24,000 (Excludes engine and propeller). Units delivered to June 1981: 80.
Kit price 2008: US$108,440

F,8.L Super Falco

Gallery

F.8L Series 1
Engine: Lycoming O-290-D2B, 135 hp

F.8L Series II
Engine: Lycoming O-320-A, 150 hp

F.8,L America

F.8L Super Falco Series IV
Engine: Lycoming O-320-B3B, 160-hp
Wingspan: 26’3” / 8.00 m
Length: 21 ‘4” / 6.50 m
Wing area: 107.5 sq.ft
Empty Wt: 1212 lb / 550 kg
Gross Wt: 1808 lb / 820 kg
Fuel capacity 40 USG
Full fuel payload: 434 lb
Top speed: 212 mph
Cruise 75%: 190 mph / 165 kt
Max cruise 5000ft / 1525m: 156 kt / 180 mph / 290 kph
Stall clean: 75 mph / 65 kt
Stall landing config: 62 mph / 54 kt
ROC SL fixed pitch prop: 984 fpm / 300 m/min
Service ceiling: 19,700 ft / 6000 m
Takeoff dist: 570 ft
Takeoff run: (50’) 1150 ft
Landing dist: 750 ft
Landing roll: (50’) 1150 ft
Range: 870 sm / 755 nm / 1400 km
Cabin length: 4 ft 7 in / 1.40 m
Cabin width: 3 ft 5 in / 1.05 m
Cabin height: 3 ft 4 in / 1.02 m
Baggage capacity: 90 lb / 40 kg
Seats: 2

Engine: Lycoming IO-360
Wing span: 8 m
Wing area: 9.89 sq.m
MAUW: 853 kg
Empty weight: 550 kg
Fuel capacity: 151 lt
Max speed: 344 kph
Cruise speed: 319 kph
Minimum speed: 100 kph
Climb rate: 7.5 m/s
Seats: 2
Fuel consumption: 36 lt/hr
Plan price (1998): $400
Kit price (1998): $70,000

Selvage 1909 monoplane

In 1909 Blaine Selvage built a single-place, open cockpit, mid-wing monoplane powered by a 40hp Selvage engine. Hardly more than an open framework with a wire-braced wing attached, reportedly built by a local mechanic, Alfred Peterson, but a 19 November 1909 newspaper photo shows it in flight. Friends who had gathered in the field watched as the 24 year-old man took his seat in front of the controls and revved his home-built engine to a roar. Then, according to a local newspaper, “the machine dragged itself over the rough ground for a distance and then evenly ascended.” It was the first airplane flight north of the Golden Gate, and one of the first anywhere on the West Coast.

The first flight took place November 16, 1909, outside of Eureka. Selvage flew three-quarters of a mile in a minute and a half, an average speed of 30MPH. He might have gone farther, had he more than a gallon of gasoline in his tank.

The most significant aspect of his flight was that he demonstrated control of the aircraft by flying in a circle almost back to his starting point; most first-time pilots barely managed to keep the thing wobbling along in a straight line.

While Martin and most other Americans were trying to copy the Wright Brother’s biplane, Selvage had built the sort of single wing plane that they were making in France. An aviation-enthusiast magazine of the time described it as a “combination of a Bleriot and Antoinette,” which probably meant that it looked much like the actual 1909 Bleriot shown in modern-day flight in the video here, except that his plane had a longer wingspan.

A few days after his premiere flight, the Press Democrat reprinted in full an account from the Eureka Herald. The PD had previously claimed that Selvage would be making his first flights from Santa Rosa, and the reprinted article included a preface that Selvage was “formerly a well known Santa Rosa boy.” Selvage and several brothers were rooming together here in recent years and working as laborers.

Selvage told a local paper that he had a lucrative offer in Southern California for exhibition flights, and might enter a $10,000 Los Angeles competition. Whether he did either is unknown, but about six months later, on June 5, 1910, he was back in Eureka to make arrangements for exhibition flights on the Fourth of July. He said he had been in Oakland, where he made “a number of flights” and was “studying aeronautics and experimenting in aviation.”

“The most successful flights which have taken place in Alameda County, Ca., have been made by Blaine Selvage in a monoplane, which he built himself,” an item in Aircraft magazine noted that September. “Three times on the same day he flew several miles and returned to the starting place without the slightest hitch.” The magazine also reported, “Selvage’s ambition is to be the first aviator to fly across San Francisco Bay.”

Perhaps Selvage felt humbled by honed skills and expensive, high-powered machines, but his career as a pioneer aviator was apparently over. The complete absence of any mention in the press after 1910 suggests that he called it quits. Or maybe his plane was repossessed; in August, 1910 he had accepted $500 from a backer that was apparently secured by the plane.

WILL MAKE AEROPLANE FLIGHT FROM SANTA ROSA

Blaine Selvage, a well known young mechanic of Eureka, has practically perfected a model of a new aeroplane of his own invention, with which he has already made several successful trial flights in private. Mr. Selvage is planning to bring his machine to Santa Rosa, where he will make his first public exhibition and trial flights.

The machine which Mr. Selvage has built consists of two plane surfaces, both 40 feet in length and six feet wide. These surfaces are connected with light but strong supports and rods of different materials, the machine built along practical lines.

A feature of the machine is an appliance whereby the man controlling the machine can make the aeroplane swing and rock from side to side and turn on an unsteady course, much as a bird in flight. This feature of the machine is now before the patent office at Washington and within a short time Mr. Selvage expects to receive his patents. The course of the aeroplane is determined by a horizontal rudder.

The motor which is now being built for the model machine is being built under the direction of Mr. Selvage. The engine is a four-cylinder motor and is capable of developing 30 horsepower. The feature of the motor is its small size and light weight which will make it adaptable for use by the aeroplane.

  • Press Democrat, August 12, 1909

SELVAGE TAKES HIS FIRST FLIGHT IN OWN AEROPLANE

A few days ago the Press Democrat mentioned the achievements of Blaine Selvage, formerly a well known Santa Rosa boy, with his self constructed aeroplane at Eureka. The Eureka Herald gives the following detailed, interesting account of his first flight, which will be read with interest by his many friends here:

In the air for a minute and a half, during which time almost a complete circle was traversed, was the feat performed at the Woods resort on the Arcata road yesterday afternoon at 5:30 o’clock. Mr. Selvage made a genuine test and his machine took to the air as nicely as a Wright machine ever tried to do . Mr. Selvage was in town this morning. Despite his modesty as to his achievement the young man was appreciably proud of his machine and exceedingly gratified at the success he enjoyed late yesterday afternoon.

Had the aeronaut had more gasoline in his machine he would have remained in the air longer. One cylinder of his four-cylindered motor began to miss. The aeronaut concluded that it would be well for him to land before any of the other cylinders refused to work. After landing and an examination of the motor made, it was found that the supply of gasoline had been practically exhausted. But one gallon of gasoline had been put in the tank and a part of this had been used in turning over the motor before a flight was attempted. More gasoline had been ordered sent out bit it did not arrive. Hence Mr. Selvage made his initial flight with a shortage of fuel.

The flight was made in a field to the south of the Woods hotel on the Arcata road. The field is no larger than is required for aeroplane maneuvers. Upon starting, the vertical rudder was put hard over. The machine dragged itself over the rough ground for a distance and then evenly ascended. When a height of 20 feet had been attained Mr. Selvage adjusted his planes [sic] to go no higher. He did not care to seek a high altitude upon the initial flight. The machine answered the levers nicely and gave evidence of having sufficient strength to withstand the strain that it must undergo. The motor behaved nicely until the gasoline was exhausted. With the vertical rudder kept hard over the machine circled about the field and would have returned to the place of beginning had there been plenty of gasoline and a landing not been made.

The Selvage machine is a monoplane. It is 40 feet from end to end of the plane, which extends on either side of the light frame work supporting the motor and affording a seat for the aeronaut. The machine was built in this city at the Pacific garage by Mr. Selvage, he making the motor himself.

Mr. Selvage says that he will not attempt to make another flight for afew days, probably not until the latter part of this week or the first of next week. He wishes to place stronger wheels beneath his machine. He is having wide hubbed wheels made especially for the machine. In landing a considerable strain is put upon the wheels. The landing of last evening came very near putting one of the wheels out of commission. Until this matter is attended to the young man will not attempt to make another flight.

The flight of yesterday afternoon was witnessed by a few invited friends of Mr. Selvage He wished to try out the aeroplane in the presence of a few before permitting the general pubic to know of the time of any intended flight.

  • Press Democrat, November 21, 1909

TO FLY AFTER STORM

Blaine Selvage, the young Eurekan who in an aeroplane of his own construction succeeded in flying three-quarters of a mile in a minute and a half last Tuesday night, stated last evening that immediately after the present storm is over he will make another flight out on the Arcata road near Woods’ resort.

Selvage is putting more substantial wheels under his flying machine and the next time he ascends heavenward it will be with the firm resolve to make a record breaking flight.

The inventor states he is confident he could fly over the top of Eureka, and but one thing discourages such an attempt, the possibility of his engine breaking while in mid air which would necessitate a descent to terra firma. House tops to not offer a descent to terra firma. House tops do not offer all that might be required for a place of alightment.

After several more flights in this county, Selvage will be ready to sally forth in search of new fields to conquer, it being his intention to go to Lon Angeles and try for the Harris Gray Otis prize, the millionaire newspaperman in the City of Angels is offering.

Selvage is confident he has infringed on none of the patents awarded to the Wright Brothers or any other aviator, and he has several applications for patent on his machine pending.

His 40 horse power engine of four cylinders made entirely by himself, Selvage declares to be the greatest factor in his success. A new system of lubrication has been used to advantage in the Selvage engine and even when it is geared to 1000 revolutions per hour the machinery does not become heated.

Other aviators have had considerable trouble with their engines, their machines becoming so heated while working at full speed in the air that long flights are impossible. Selvage thinks he has successfully bridged this gap.

Then again, the Selvage aeroplane is equipped with steering and balancing devices far superior to any yet used. Generally the amateur aviator has trouble on his first flight in keeping the machine right side up, but Selvage did not experience the slightest difficulty from that source in his first dash into the clouds.

The Selvage machine is of the monoplane type used considerably by French aviators, the Wrights are using a biplane.

  • The Humboldt Times, November 19, 1909 as reprinted in “Redwood Country” Eureka Times-Standard, November 21, 1969

IS ASKED TO FLY AGAIN

Blaine Selvage, the young machinist of this city who recently made a flight of three-quarters of a mile in a minute and a half in an aeroplane, monoplane type, of his own construction has already received tempting offers for exhibitions in other parts of the state.

There is soon to be a big jubilation in Ventura and Selvage has been offered $500 and all expenses to make flights in that county during the carnival. Selvage has about decided to accept the offer and he is planning to leave Humboldt county soon to keep the engagement.

After Ventura, he told The Times, he would then fly on to Los Angeles to accept the challenge for a $10,000 purse being offered by the publisher of The Los Angeles Times.

[..]

It has been suggested that Mr. Selvage be asked to make a number of flights in this city next Fourth of July or next fair week and something of that nature may be arranged. This winter he wants to go to Southern California where there are flying contests.

Selvage has demonstrated that he has mastered the air in a measure and he will no doubt have more engagements to make exhibition flights that he can attend to hereafter.

  • The Humboldt Times, November 23, 1909 as reprinted in “Redwood Country” Eureka Times-Standard, November 21, 1969

Sellers Quadruplane

Built and flown by Matthew B. Sellers in somewhat different versions during 1908 and 1913. Engines used were a Kemp G-2 two-cylinder engine of 16 hp and an 8 hp Dutheil-Chalmers.

Sellers Quadruplane No.6

Based on his previous multi-wing glider experiments, the no.6 was originally was a glider with spring-actuated, variable-incidence wings. First flying on 28 December 1908, it flew successfully as late as 1927 with an economy of power, the largest motor being a 10hp two-cylinder Bates, the four positive-staggered wings of 36″ chord provided more than 200sqft of wing area. One built, it was the most prominent of Sellers’ 52 different designs in 22 years to 1914. Of note is a claimed feature invented and used by Sellers as early as June 1908, a four-wheel gear that rose automatically when the plane left the ground, with landings then made on skids. Aircraft empty weight shown in US Patent Office Gazette 11 July 1911 was 110 lb.

Replica

In 1910 Matthew Sellers flew in a 4 hp quadruplane at Grahn, Kentucy. The plane weighed less than 80 lb and was powered with a Duthell & Chamers two cylinder opposed engine.

1909 Seller No. 6 quadruplane

Quadruplane Number 6
Engine: French-made Dutheil-Chalmers, 8hp
Wingspan: 18’0″
Length: 12’0″
Gross wt: 250 lb
Useful load: 140 lb
Speed: approx. 20 mph
Seats: 1

S.E.L.A. 1911 monoplane

In 1909 the pilot Gaudard founded the Société d’Étude pour la Locomotion Aérienne (SELA) in France. G Badini, their designer, built two similar aircraft powered by 55 hp Aviatik engines, one appeared in 1910 at St Cyr, the other, a variant, in 1911. This machine was sponsored by “La Dentelle au Foyer”, a lace-workers’ magazine which later bought a Farman for the Army, christened “La Dentelle de Puy”; the city of Puy was famous for its lace industry.

W. Seiffert Mini II / ALF Mini II

The Mini II, which was built by W. Seiffert until 1992, was designed as a minimum: with low engine power. The Mini II was 15,000 DM at that time. The production of the Mini II was discontinued in 1992.

With a hang glider wing (Schönleber Focus 18) power is from a 24 hp König three-cylinder two-stroke engine, with electric start. The battery was originally charged from a solar cell. In practice, however, the sunshine is far from sufficient to always have a full battery.

With the large surface area of the Schönleber Focus (18 square meters) wing, thermal flying is possible.

The Mini II is officially approved for double-seater operation – as the only one yet.

The Mini II is very manoeuvrable thanks to the large wheels on the ground.

The fuel is held in 2 x 12 lt tanks, and the consumption of the three-cylinder engine is about 8 lt/ hour.

ALF (founded in autumn 2010, at the Altes Lager airfield, south of Berlin) has the rights for the construction and distribution of the Mini II and has been working on the successor since 2005. Markus Hanisch has taken over the construction and distribution rights from the DULV and is building the Mini II again in a modern form.

The older, somewhat slow Focus 18 surface (as in the original Mini II) from UL-manufacturer Schönleber is used. In the approval process is the Bautek Bico wing. The development has not yet moved beyond a prototype device.

Engine: König SC 430, 24 hp
Wing: Schönleber Focus
Wing area: 18 sq.m
Climb rate solo: – 4 m/s
Climb rate MAUW: 2 m/s
Price 1987: 15.000 DM

Seidelinger Delaplane

Designed and built by Robie Seidelinger for the Wilmington Aero Club, and flown by Eddie Bloomfield.

According to “Delaware Aviation History” by Frebert, taxi tests in the configuration shown resulted in moving the engine to a position after the wings rather than under the pilot’s seat, and use of a single propeller, as well as shortening the rear fuselage. In this later form it flew 300 yards on October 21, 1910, and made several other fights on the following days. It was destroyed when lightning struck its storage shed.

While built by Seidelinger, it was funded by the Wilmington Aero Club.

Seibel S-4 / YH-24 Sky Hawk

YH-24

Charles Seibel began development on the S-4 after forming the Seibel Helicopter Company with funding from local Kansas oil investors. The S-4 was a continuation of his work on his previous design, the Seibel S-3, which he flew as a demonstrator for his design concepts; primarily a new design for a two-bladed rotor system and a simplified transmission. These features would also be incorporated into the S-4 design.

The S-4 frame was a welded steel-tube box frame, with two decks. A lower deck supported the control panel, pilot’s seat, wheeled, tricycle landing gear, and a small passenger/cargo area accessible from the rear, and an upper deck carried the engine, the fuel and oil tanks, and supported the transmission and rotor assembly. A tapered, monocoque, alloy tail boom with a two-bladed antitorque tail rotor was attached at the rear of the upper deck.

In January 1949, the S-4 N5152 c/n 1 lifted off the ground for the first time, piloted by Johnny Gibbs. In March 1950, certification tests were completed and on 23 April 1950, the S-4 received civil certification by the CAA.

Gov. Frank Carlson and Charles Seibel at the CAA Certification Ceremony

Both the U.S. Army and U.S. Air Force showed interest in the S-4. In early 1951, the U.S. Army ordered two examples for operational and engineering evaluation in the observation, utility, and aeromedical evacuation roles. The Army designated the S-4 as the YH-24 Sky Hawk. The first Sky Hawk, serial number 51-5112, was delivered to Fort Bragg, North Carolina in April 1951 and returned to Cessna in 1952; the second YH-24, serial number 51-5113, was delivered to Wright Field, modified to S-4B. YH-24 51-5113 with a 165hp Franklin 6A4-165-B3, was modified as a side-by-side trainer for Army testing at Fort Sill OK. Both ships were eventually scrapped by Cessna.

Despite the simplicity of the S-4, the Army determined that it did not provide a sufficient payload capability and the aircraft were dropped from the inventory and returned to Seibel in 1952. Only the two were built.

A larger engine, the Lycoming O-290B with 125 hp, would be installed in the aircraft and side-by-side seats, making it the 1950 S-4A N5153 c/n 2. Flight tests by CAA’s Hal Hermes.

Seibel S-4A

Based on feedback from the Army during the evaluation, Seibel, shortened the fuselage of the second YH-24 (51-5113) and widened the cockpit for a co-pilot’s seat next to the pilot’s seat. Seibel also replaced that aircraft’s original wheeled, tricycle undercarriage with landing skids. This aircraft would become the S-4B. The S-4B would serve as the basis for the design of the Cessna CH-1 Skyhook, the only helicopter Cessna ever produced.

Variants:

S-4
Original design, certified by the CAA in 1950.

S-4A
Featured an upgraded, 125 hp Lycoming O-290B engine.

S-4B
Modified airframe based on Army recommendations during YH-24 evaluation. Two-seat cockpit and skid landing gear.

Specifications:

S-4 Skyhawk
Engine: 108hp Lycoming O-235-C1
Rotor: 29″2″
Length: 27’10”
Useful load: 580 lb
Max speed: 65 mph
Cruise: 58 mph
Range: 100 mi
Ceiling: 4300′.
Seats: 2 tandem

S-4A
Engine: 125hp Lycoming O-290-B
Length: 24’6″
Seats: 2-3

YH-24
Engine: 1 × Lycoming O-290-D, 125 hp (93 kw)
Rotor diameter: 29 ft 11⁄2 in (8.88 m)
Disc area: 666 sq ft (61.9 m2)
Length: 27 ft 10 in (8.48 m)
Height: 10 ft (3.05 m)
Empty weight: 960 lb (436 kg)
Max. takeoff weight: 1,540 lb (700 kg)
Maximum speed: 65 mph (105 km/h)
Cruise speed: 58 mph (93 km/h)
Range: 98 mi (85 nmi, 158 km)
Service ceiling: 4,300 ft (1,310 m)
Rate of climb: 700 ft/min (3.6 m/s)
Crew: 1-2

S-4B / YH-24
Engine: 165hp Franklin 6A4-165-B3
Seats: side-by-side