Adler ISDT

Introducing the 1957 Adler ISDT, a remarkable piece of engineering that perfectly embodies the spirit of competition and adventure in the mid-20th century motorcycle market. Designed specifically for the International Six Days Trial (ISDT), this sport motorcycle is not just a ride; it’s an invitation to experience the thrill of enduro racing. With its nimble frame and lightweight design, the Adler ISDT quickly gained a reputation among enthusiasts for its agility and responsiveness, making it a favorite among those who craved the excitement of off-road riding. At the heart of the Adler ISDT lies a robust 247 cc, twin-cylinder, two-stroke engine, delivering a spirited 18 horsepower at 5,590 RPM. This powerplant is not just about numbers; it offers an engaging experience on the trails, propelling riders to a top speed of 125 km/h (77.7 mph). The unique bore and stroke configuration of 54 mm by 54 mm ensures a balanced power delivery, while the 6.6:1 compression ratio enhances overall performance. Coupled with a Bing carburettor that optimizes fuel delivery, the ISDT thrives on the open road and rugged terrains alike, offering a ride that is both exhilarating and reliable. The 1957 Adler ISDT is packed with notable features that enhance its performance and comfort. The bike boasts a twin swinging link front suspension and a rear shock absorber-plunger system, providing an impressive level of control and stability over rough surfaces. With a fuel capacity of 12 liters (3.17 gallons), riders can confidently traverse long distances without constant refueling interruptions. The enclosed clutch and air-cooled engine further highlight the motorcycle's commitment to durability and efficiency, ensuring that even on challenging trails, the Adler ISDT remains a steadfast companion. **