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The Honda 125 cc RC 149 Grand Prix is a Japanese made competition motorcycle built in 1966. It has a four-stroke, five-cylinder 125 cc engine; with a top speed of 130 mph (209.2 km/h).
‟In the Sixties, the Japanese factories - bent on the conquest of Europe - launched themselves into a crazy technological scramble for the winner's circle in the world racing championship.
Champion of the Four-Stroke
Until the ban in 1967 on 50cc and 125cc engines with more than two cylinders and more than four cylinders in the larger displacements, Honda championed the fourstroke engine, which used extra cylinders to make up for the power it lost to two-stroke models. The error of this approach was apparent in the 125cc class where Honda, world champion with two and four-cylinder engines, competed against the increasingly potent two-stroke twins of Yamaha and Suzuki. The two-stroke cycles ruled the championships in 1965.
To counter this challenge, Honda engineer Irimajiri - designer of the marques 50cc twins and its six-cylinder 250 - created a five-cylinder four-stroke made entirely from magnesium, for 1966. This amazing feat of engineering had pistons just 35 mm in diameter and cranked out 23,000 rpm yet stalled below 17,000 rpm, forcing the rider to work the nine-speed transmission relentlessly to keep the engine running! The Honda 125 proved unbeatable in the hands of the talented Swiss cyclist Luigi Taveri. It would force Yamaha, Suzuki, and Kawasaki to go to four-cylinder two-strokes for the 1967 season.
- Engine: 125cc (35.05x25.14mm) four-stroke
- Power output: 35 hp Â© 20,500 rpm
- Valves: twin overhead camshafts, 4 valves per cylinder
- Fuel system: 5 carburetors
- Transmission: nine-speed gearbox; chain final drive
- Suspension: (front) telescopic forks; (rear) swinging arm
- Brakes: (front) two-leading-shoe drum; (rear) two-leading-shoe drum
- Wheels: wire
- Weight: 187 lb
- Maximum speed: 130 mph
The Swiss rider Luigi Taveri specialized in riding tiny racers. He was the three-times 125cc world champion riding Hondas.”
*This Atlas extra-large trading card is part of the EatSleepRIDE motorcycle stuff collection.
Photo credit: http://greenbushacres.ca/