Crouch-Bolas Dragon Type IV

“For practical tests on certain theories relative to slow-speed airplanes.” The engines, of which several of the major parts were “common to standard automobile engines,” were built in direct-drive and geared versions. The IVD had an inlet and cowling around the cylinders to aid air cooling. The IVG had in addition a gear-driven four-bladed fan in a circular opening at the revised inlet to this cowling for additional cooling capability. The IVG was apparently the model installed in the Crouch-Bolas Dragonfly.

Dragon Type IVD
1932
65hp
214ci
4-cylinder inline
Air cooled
weight: 195 lb
Direct Drive.

Dragon Type IVG
1932
90hp
214ci
4-cylinder inline
Air cooled
weight: 245 lb
Geared Drive.

Cross Ladybird

Mr. David Cross, aged 23, in the aeroplane designed and built by himself in which he crashed from a height of 300 ft. near Gore, New Zealand, on Monday. Mr Cross was injured and the machine was wrecked.

The Ladybird first flew on 21 May 33 with ex-Pither 40hp JAP engine. Span 29ft.

He made several flights (Approx 6 ) including one of 14km and he was the first man to be prosecuted in New Zealand for flying without a licence.

On 24 May 1933 the ODT reported, “Some months ago it was hoped to take the machine into the air, but the engine with which it was then equipped – a four-cylinder motor cycle engine – was not sufficiently powerful to lift the plane and the young aviator finally obtained an old engine imported from England by Mr Pither of Invercargill some 22 years ago for aviation purposes.

“This was overhauled and found to be in good order and after some alterations it was installed in the machine.

“Much study and energy had been devoted to the construction of a small monoplane at Chatton, Eastern Southland, when a very proud young man named David Cecil Cross, made his first successful trial flights in the machine.

“In the presence of about 20 onlookers the monoplane was taken out on Sunday morning and the young man took his place at the controls.

“The machine took off beautifully, crossed the Washpool Creek and a row of tall poplar trees, reached an altitude of 200 feet and made a good landing. The return journey was commenced a few minutes later and would have been equally successful had not one of the wheels struck a log of wood which was almost hidden in the ground.

“A wheel was torn off and a certain amount of damage was done to the undercarriage, but the pilot was uninjured. Naturally the young man was very proud of his achievement, although the slight mishap at the end of the trial was a disappointment to him. The monoplane has a wing span of 29 feet and on account of its graceful lines has been called the Ladybird. Despite its age, the engine now installed is in excellent order.”

The Ladybird crashed in a turnip paddock at Otamita, Southland on 10 July 1933, and the remains went to the Croydon Aviation Heritage Centre at Mandeville, New Zealand, in 2012.

Crosley engine

The engine featured one piece nickel iron cylinders with an underhead camshaft having all valve gears enclosed in a cast aluminium housing which could be removed without disturbing the engine timing. The camshaft was driven by a spur gear train. Gears were made of nitralloy steel, and a generator drive was provided.

Type: 4 cylinder inverted inline, air cooled
Rating: 100 hp at 2100 rpm
Displacement: 301 cu.in
Compression ratio: 5-1
Bore: 4 1/4 in
Stroke: 5 5/16 in
Length: 45 5/8 in
Width: 20 in
Weight: 300 lb
Fuel consumption: not more than .56 lb/hp/hr
Oil consumption: not more than .01 lb/hp/hr
Lubrication: Gear pump pressure to all parts, Three gear scavengingng pumps. One functioning on climp, another on glide.
Ignition: Bosch Dual Type FU4R
Carburation: Holley
Spark plugs: 2 per cylinder

Crosley Aircraft Co

USA
Established in 1929 at Cincinnati, Ohio, this company was a subsidiary of the Crosley Radio Corporation. It produced two- and three-seat open-cockpit high-wing monoplanes known respectively as the Crosley C-1 and C-2. These two models pioneered the advantages of interchangeability, the complete wing, tail surfaces, landing gear, engines and engine mountings being common to both.