Back to Bike FinderYears: 1956 · 1955 · 1954 · 1953 · 1952
Adler M 250 S
1952Allround

Adler M 250 S

Key specifications

Engine
247 cc
Power
16 HP
Weight
135 kg
Fuel type
petrol
Fuel capacity
3.2 L
Transmission
4-speed
Front brakes
Expanding brake (drum brake)
Rear brakes
Expanding brake (drum brake)

Overview

Introducing the 1952 Adler M 250 S, a remarkable piece of engineering that encapsulates the spirit of post-war motorcycling. Hailing from the renowned Adler factory in Germany, this all-round motorcycle was designed to cater to a variety of riding needs, from daily commutes to leisurely weekend rides. With its classic lines and robust construction, the M 250 S stands as a testament to the durability and ingenuity of 1950s motorcycle design, making it a sought-after model among collectors and enthusiasts alike. Under the tank, the M 250 S is powered by a spirited 247cc twin-cylinder, two-stroke engine that delivers an impressive 16 horsepower at 5,590 RPM. This engine not only provides a lively ride but also achieves a top speed of 116 km/h (72.1 mph), ensuring that riders can enjoy a thrilling experience on the open road. The semi-double cradle frame combined with a 4-speed gearbox and chain final drive offers smooth gear transitions and responsive handling. The bike's compression ratio of 5.8:1 ensures that the engine runs efficiently, while the air-cooling system keeps it running cool during those long rides. Thanks to its lightweight build of 135 kg (297.6 lbs), the M 250 S is agile and easy to maneuver, making it an excellent choice for both novice and seasoned riders. The Adler M 250 S is packed with features that enhance both functionality and comfort. Its wet multiplate clutch ensures smooth engagement, while the drum brakes—featuring a 180 mm diameter at both front and rear—provide reliable stopping power. The bike's rear suspension is designed with two shocks, offering a comfortable ride even on uneven terrain. With a fuel capacity of 12 liters (3.17 gallons), riders can enjoy longer journeys without the constant need for refueling. The classic kick starter adds a nostalgic touch, reminiscent of a bygone era of motorcycling. **

Pros

  • Agile Handling: Weighing in at just 135 kg, the M 250 S is nimble and easy to maneuver, perfect for both city riding and winding country roads.
  • Solid Performance: The 247cc engine delivers adequate power for enjoyable rides, and the top speed of 116 km/h makes it suitable for various riding scenarios.
  • Classic Aesthetics: With its vintage styling, the M 250 S appeals to enthusiasts looking for a classic motorcycle that stands out in a crowd.

Cons

  • Drum Brakes: While reliable, the expanding drum brakes may not offer the same stopping power or responsiveness as modern disc brakes.
  • Limited Power Output: With only 16 HP, the M 250 S may feel underpowered for riders accustomed to more modern, high-performance motorcycles.
  • Kick Start Only: The absence of an electric starter may be less convenient for some riders, especially in urban settings where quick starts are often needed.

Technical details

Source specification data

Make
Adler
Model
M 250 S
Category
Allround
Starter
Kick
Power
16.00 HP (11.7 kW)) @ 5590 RPM
Clutch
Wet multiplate
Gearbox
4-speed
Top Speed
116.0 km/h (72.1 mph)
Fuel System
Carburettor
Bore X Stroke
54.0 x 54.0 mm (2.1 x 2.1 inches)
Compression
5.8:1
Displacement
247.00 ccm (15.07 cubic inches)
Cooling System
Air
Engine Details
Twin, two-stroke
Transmission Type Final Drive
Chain
Dry Weight
135.0 kg (297.6 pounds)
Fuel Capacity
12.00 litres (3.17 gallons)
Power Weight Ratio
0.1185 HP/kg
Seat
Single
Rear Tyre
3.25-16
Frame Type
Semi double cradle
Front Tyre
3.25-16
Rear Brakes
Expanding brake (drum brake)
Front Brakes
Expanding brake (drum brake)
Rear Suspension
Two schock
Rear Brakes Diameter
180 mm (7.1 inches)
Front Brakes Diameter
180 mm (7.1 inches)