Photos: 4200cc bike ‘Tinker Toy’ packs power of 48 cylinders, makes Guinness record

With 48 individual cylinders, each equipped with a Mikuni carburetor and ignition system, the motorcycle demands meticulous tuning to ensure it runs smoothly and delivers peak performance.

A motorcycle with an astounding 48 cylinders has been built by Simon Whitelock, setting a Guinness World Record for the most cylinders in a land vehicle. 

The motorcycle, nicknamed “Tinker Toy,” utilizes sixteen Kawasaki KH250 engines, resulting in a 4200cc displacement. 

“Determined to put an end to the multi-cylinder ‘arms race’, Simon hit upon the idea of building a 48-cylinder monster using sixteen KH250 engines,” said Bonhams|Cars, the platform which auctioned “Tinker Toy.” 

The sheer number of cylinders creates a visual spectacle and a mechanical marvel that is sure to capture the attention of motorcycle enthusiasts and engineers alike.

"Tinker Toy" is a showcase of engineering skill

“Tinker Toy” is a showcase of engineering skill

The “2003 Whitelock 4200cc Tinker Toy” is not intended for speed. It serves as a demonstration of engineering skills. The project began in 1998 and was completed in 2003, with 80% of the work finalized in the last year. This dedication to his craft is evident in the meticulous arrangement of the engines and the intricate details throughout the bike.

48 cylinders, 48 carburetors, and a unique exhaust

Each of the 48 cylinders has its own ignition and Mikuni carburetor. The exhaust system is a remarkable 24-into-1 setup on both sides of the bike. This highlights the complexity of the build and the challenges overcome in creating a functional and balanced machine. The individual carburetors and ignition systems require precise tuning to ensure smooth running and optimal performance.

Hidden fuel tank and scooter-engine starter

The motorcycle’s fuel tank is cleverly concealed within the middle and lower cylinder banks and is constructed from stainless steel tubing. A 125cc scooter engine serves as the starter motor for this behemoth. This unconventional approach to fuel storage and starting adds to the unique character of the bike. The use of a separate scooter engine for starting highlights the immense power and compression of the 48-cylinder engine.

Custom frame and components for strength

The motorcycle features a custom frame with the front end sourced from a Honda Gold Wing.  The transmission is borrowed from a BMW K100, and a car-style alternator provides electrical power. These carefully selected components ensure the motorcycle is not only structurally sound but also capable of handling the demands placed on it. The motorcycle’s wheels have heavy-duty spokes for added support.

Road-legal "Tinker Toy" weighs over 1300 pounds

Road-legal “Tinker Toy” weighs over 1300 pounds

Weighing in at 600 kilograms (over 1300 pounds), the “Tinker Toy” is surprisingly road-legal. Whitelock describes the sound of the engine without exhausts as similar to a Rolls-Royce Merlin, a powerful aircraft engine from WWII. The fact that it’s road-legal makes it even more remarkable. 

WWII aircraft engines inspire "Tinker Toy"

WWII aircraft engines inspire “Tinker Toy”

The inspiration for this project stemmed from Whitelock’s fascination with multi-cylinder aero-engines used in WWII aircraft. The name “Tinker Toy” is a nod to a B-17 Flying Fortress bomber. This passion for aviation history is evident in the design and construction of the motorcycle. The motorcycle’s name reflects its connection to the bomber and its playful yet complex nature. 

"Tinker Toy" sells for $119,000 at auction

“Tinker Toy” sells for $119,000 at auction

This is not Whitelock’s first foray into unconventional motorcycle building. He has previously created a triple-based four-cylinder Kwacker, a nine-cylinder triple-triple, a seven-cylinder inline triple, and an H2R replica. The “Tinker Toy” was recently sold for $119,000. This sale price highlights the motorcycle’s value as a unique and significant piece of engineering.

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