
Adler M 250 S
Key specifications
Overview
Introducing the 1955 Adler M 250 S, a remarkable motorcycle that encapsulates the charm of mid-20th-century engineering and design. Positioned in the allround category, this bike is a versatile companion for both urban commuting and leisurely weekend rides. Adler, a brand renowned for its innovative spirit in post-war Germany, crafted the M 250 S to cater to the growing demand for reliable and stylish motorcycles that could handle varied terrains and riding conditions. With its classic aesthetic and solid performance, the M 250 S remains a sought-after piece among vintage motorcycle enthusiasts and collectors alike. At the heart of the Adler M 250 S lies a spirited 247cc twin-cylinder, two-stroke engine, producing a respectable 16 horsepower at 5,590 RPM. This powerplant offers a delightful riding experience, characterized by its smooth acceleration and lively throttle response. The 4-speed gearbox allows for effortless gear changes, enabling riders to reach a top speed of 116 km/h (72.1 mph) with ease. The air-cooled engine, combined with a compression ratio of 5.8:1, ensures that the M 250 S delivers a balance of power and efficiency, making it an ideal choice for both novice riders and seasoned bikers looking for a nostalgic journey down memory lane. The Adler M 250 S is not just about performance; it also boasts a selection of features designed for comfort and safety. The semi double cradle frame provides stability and confidence when navigating through twists and turns. Coupled with dual drum brakes—both front and rear—measuring 180 mm in diameter, the bike offers reliable stopping power. The rear suspension, equipped with two shock absorbers, enhances ride quality, absorbing bumps and imperfections in the road. Riders will appreciate the simplicity and reliability of the kick starter, which harkens back to a time when motorcycles embodied an authentic, hands-on experience. **
Pros
- Classic Design: The retro styling of the Adler M 250 S appeals to vintage motorcycle aficionados, making it a head-turner at any gathering.
- Smooth Performance: The two-stroke engine provides lively acceleration and a thrilling ride, perfect for both city and countryside adventures.
- Sturdy Construction: With its semi double cradle frame and robust braking system, the M 250 S instills confidence in riders, ensuring a safe and enjoyable experience.
Cons
- Limited Top Speed: While capable for daily use, the top speed of 116 km/h may not satisfy those seeking high-performance thrills on the open road.
- Two-Stroke Engine Maintenance: The two-stroke engine requires a bit more attention in terms of oil mixture and maintenance, which can be a downside for some riders.
- Kick Start Only: The absence of an electric starter may deter some modern riders who prefer the convenience of instant ignition.
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
- Seat
- Single
- Frame Type
- Semi double cradle
- 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)