1935 Riley MPH Sprite

The 1935 Riley MPH Sprite is an extraordinary pre-war sports car known for its sleek styling, robust engineering, and motorsport prowess. Produced in limited numbers, a total of only 6 vehicles were produced,  it represents the pinnacle of Riley's craftsmanship and innovation during the 1930s. The MPH Sprite was part of a series of bespoke Riley models designed for both the road and the track, combining elegance with competitive performance.

Background

• Manufacturer: Riley (Coventry) Limited
• Model Year: 1935
• Model: MPH Sprite
• Significance: Known for its exclusivity and performance, the MPH Sprite was derived from Riley's successful motorsport efforts, particularly in endurance racing and trials.

Specifications

• Engine:
  • Type: 1.5-liter (1,496 cc) or 1.7-liter (1,726 cc) inline-four, depending on the customer’s preference.
  • Output: Approximately 45–60 horsepower in standard form; higher for tuned or competition-spec versions.
  • Induction: Twin SU carburetors provided efficient fuel delivery.
  • Features: A high-revving engine with a crossflow cylinder head, known for its reliability and flexibility.
• Transmission: 4-speed manual gearbox with a light and precise shift mechanism.
• Chassis: Steel ladder frame with a short wheelbase for improved agility.
• Suspension:
  • Front: Independent with transverse leaf springs.
  • Rear: Live axle with semi-elliptic leaf springs.
• Brakes: Hydraulic drum brakes on all four wheels, a technological advantage at the time.

Design and Features

• Exterior:
  • The MPH Sprite featured a low-slung, streamlined body designed for aerodynamic efficiency and visual appeal.
  • Its signature long hood, sharply raked windscreen, and flowing fenders gave it a dramatic and sporty presence.
  • The car often came equipped with cycle wings and external fuel filler caps, emphasizing its racing intentions.
  • Wire-spoke wheels and knock-off hubs were standard, enhancing its classic look.
• Interior:
  • The cockpit was compact and purpose-driven, featuring lightweight bucket seats upholstered in leather.
  • The dashboard included essential instruments, such as speedometer, tachometer, and oil pressure gauges.
  • Customization options allowed owners to tailor the interior to their taste, with variations in trim and layout.

Performance

• Top Speed: Approximately 90–100 mph (145–161 km/h), depending on engine configuration and body style.
• Acceleration: Swift for its era, aided by the car’s lightweight construction and responsive engine.
• Handling: The short wheelbase and precise steering provided exceptional agility, making it ideal for spirited driving and racing.

Motorsport Legacy

• Racing Achievements: The Riley MPH and its derivatives were popular in competitive motorsport, including hill climbs, endurance races, and trials.
  • Riley’s engineering success in racing directly influenced the design and performance of the MPH Sprite.
• Customization: Many owners modified their cars for specific events, adding features like higher compression ratios, custom exhausts, or lightweight body panels.

Legacy

• Exclusivity: With only a handful of MPH Sprites ever built, it is one of the rarest and most desirable Riley models.
• Collector’s Appeal: Today, the car is highly sought after by collectors and vintage racing enthusiasts, often commanding significant value at auctions.
• Design Influence: The MPH Sprite's striking aesthetics and advanced engineering set a benchmark for pre-war sports cars, influencing later Riley models and British sports car design as a whole.

Summary

The 1935 Riley MPH Sprite is a masterpiece of pre-war automotive design and engineering. Its combination of performance, beauty, and exclusivity ensures its status as one of the most iconic British sports cars of its time. Whether on the road or the racetrack, the MPH Sprite exemplifies the spirit of 1930s motoring excellence.