1925 Rolls-Royce Phantom I Jonckheere Coupe 1925 Rolls-Royce Phantom I Jonckheere Coupe 1925 Rolls-Royce Phantom I Jonckheere Coupe 1925 Rolls-Royce Phantom I Jonckheere Coupe
1925 Rolls-Royce Phantom I Jonckheere Coupe

Background

Frederick Henry Royce was an engineer and the Honorable Charles Stewart Rolls was a man with many talents. He was an aviator, driver, and automobile enthusiasts. In the world of business, he excelled at marketing.

The Rolls-Royce Company began its distinguished career in the early 1900's, focusing on quality and performance. During 1905 and 1906, forty vehicles were produced, all with four-cylinder engines producing 20 horsepower.

1906 was a big year for the young company, with Charles Stewart Rolls and Frederick Henry Royce officially registering the Rolls-Royce Limited Company. The legendary 40/50 six-cylinder Silver Ghost was introduced with much acclaim. During the same year, Rolls and Royce entered the Tourist Trophy Race, one of the most prestigious events of the time. Their powerful and durable car outran the rest of pack, beating the nearest competitor by 27 minutes. In 1907 the company further showcased their vehicles durability by participating in a 15,000 mile reliability event.

In a time when maintenance and durability were on the minds of every consumer, Rolls-Royce left their buyers with peace of mind. To add even more prestige to their vehicles, the vehicles were marketed to the most elite and well-to-do in society. By supplying their vehicles to British royalty, the Rolls-Royce Company concreted their reputation in history. The cars durability was matched by its comfort; they were outfitted with luxurious bodies by some of the top coachbuilders in the industry. The engines were powerful and provided a rather smooth and comfortable ride. The engines were engineering marvels, constructed of an aluminum alloy crankcase. Instead of chains, the timing and ignition drive were both run by gears. The parts were hand polished and constructed to a high degree of accuracy. The sturdy construction meant that conversation were possible, even while the vehicle was at top speed.

The 40/50 HP Silver Ghost models were sold for a period of fifteen years as the companies only offering. By 1922, the Rolls-Royce Company began offering the Twenty which was offered to a larger market, though still very exclusive. Competition such as Hispano Suiza had caught up with Rolls-Royce by 1925; Rolls-Royce responded. Development began on a more modern version of its Silver Ghost engine that would be more powerful and durable. The stroke was enlarged providing a greater increase in horsepower. The resulting vehicle was named the '40/50 New Phantom'. When the Phantom II was introduced in 1929, the '40/50 New Phantom' was retrospectively named the Phantom I.

Phantom I

The Phantom was built in secrecy, using the code name EAC which stood for Easter Armored Car. To reinforce the code name, pieces of armor plating was intentially left around the factory. The Phantom I was the successor to the Silver Ghost and produced for only four years. Though the engine had been modified to produce more horsepower and torque, the chassis was only slightly updated. This would prove to be a major drawback for the Phantom I.

In 1921 a Rolls-Royce factory had been opened in Springfield Massachusetts with the purpose of producing Silver Ghosts that were built with traditional Rolls-Royce quality but catered to the American customer. These vehicles were known as the 'Springfield' Silver Ghosts.

A year after the Phantom was introduced, the 'Springfield' Phantom became available. The late arrival was attributed to necessary modifications, such as converting to left hand drive. The Springfield plant continued Rolls-Royce production until 1931, when the American factory was closed.

Jonckheere Coupe One-Off

This special Phantom I began life as a Hooper convertible. Shortly thereafter it was sent to Belgium to be re-bodied by Jonckheere in something more extravagant. The result was astonishing and large - six meters in total. Who ever commissioned the vehicle and created the original designs is lost to history. A fire at the Jonckheere Company buried records of its past. What is known about this vehicle though begins in 1934 when it was entered in the Prix de Cannes, its first Concours d'Elegance. This would be the first of many showings and first place victories.

It was later sold to an American who made modifications to the vehicle and painted it gold. The car was arranged with other similar vehicles and shown to paying customers. A dollar would get the curious individual a look at the radical display of bold and mesmerizing vehicles.

In 1991 a Japanese collector purchased the gold car for $1.5 million. It was not seen for many years until it was purchased by the Petersen Automotive Museum. A complete restoration was undertaken and the result was nothing less than stellar. It was shown at the 2005 Pebble Beach Concours d'Elegance where it received the Lucius Beebe Trophy, an award that honors the finest Rolls-Royce. If the complete history had been known, the car would have been eligible to earn the coveted 'Best in Show'.
Although the Silver Ghost had been constantly improved over its life span, by the 1920's other manufacturers had begun to close the performance gap, and the decision was made to produce a new car.
By 1925, the New Phantom (retrospectively called the Phantom I when the Phantom II was introduced in 1929) was ready.

A new chassis had not been built so the car used the Ghost chassis. This meant that initially the only difference between the Ghost and the New Phantom was the method of mounting the steering column on the chassis and the new power unit. The six-cylinder overhead valve engine was similar in many ways to the Twenty, but was of 7,668cc. This was over twice the capacity of the little Twenty at 3,127cc.

The Phantom had been prepared in great secrecy, as would its namesake be, 70 years later. During its development the car was codenamed EAC, which stood for Easter Armored Car. Pieces of armor plating were even left around the factory to lend credence to this cover-up story.

Two chassis lengths were offered, the standard being 190.25 inches (4.83m) with a 196.75 inches (4.99m) version for more formal coachwork.

A special open sporting body was fitted to the fourth experimental chassis and even though the New Phantom's engine performed better than that of the Silver Ghost, the New Phantom was found to have a slightly lower top speed. This led to Rolls-Royce testing at Brooklands to investigate the effect of weight and, more importantly, of aerodynamics in relation to performance. With completely redesigned bodywork, this car subsequently ran at around 100 mph.

Source - Rolls-Royce Motor Cars Ltd.

1925 Rolls-Royce Phantom I Jonckheere Coupe

Year1925
MakeRolls-Royce
ModelPhantom I Jonckheere Coupe
Engine LocationFront
Drive TypeRear Wheel
Production Years for Series1925 - 1929
Coach WorkJonckheere
Combined MPG0.00

Performance
Top Speed140 km/h | 87 mph Similar top speeds

Engine  
Engine ConfigurationS
Cylinders6
Aspiration/InductionNormal
Displacement468.00 CU IN. | 7670.5 cc. | 7.7 L.
Valves12 valves.
2 valves per cylinder.
ValvetrainOHV
Horsepower108.00 BHP (79.5 KW) @ 2300.00 RPM
HP / Liter14.0 BHP / Liter
Fuel TypeGasoline - Petrol
Fuel FeedCarburetor
Rolls-Royce Carburetor

Standard Transmission
Gears4
TransmissionManual


 
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Additional Resources and Links
Meadow Brook Concours d'Elegance Official Website

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Phantom I
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