isdt
1957 adler isdt Technical Analysis & Specification Breakdown
Engineered by adler for the sport motorcycle segment, the 1957 adler isdt features a 247 cc (15.1 cu in) air-cooled twin, two-stroke configuration. In factory specification, peak output is rated at 18 HP (13.1 kW) at 5,590 rpm, transferring power to the rear wheel through chain final drive. With a specific output of 72.9 HP per liter, the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.
The 12-liter (3.2 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 125 km/h (78 mph).
Within MotoLibrary's adler archive, this model family spans 2 indexed model years from 1957 to 1958, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
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