Adler MB 250 S

Adler MB 250S

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Thesports model of the MB250 with raiseddual exhaust, more power and deepsports handlebars. TheMB 250 S wasan absolute rocket! Startingbike for many racersof private riders in on-roadand off-road competitions.The engine developedthen in 1956 andthe motocrossdelivered a good20 hp.

This bike was built for the American market, restored by Rolf Otto



Dane techniczne:


Make Model.
Adler MB 250S
Year
1955
Engine
2 cylinder 2 stroke flat-crowned pistons
Capacity
247 cc / 15.1 cub in.
Bore x Stroke
54 x 54 mm
Cooling
Air cooled
Lubrication
Petrol oil mix 25:1
Clutch
Multi plate
Starting
Kick start
Battery
6V 6Ah
Ignition
6 V 45/60 W ignition set battery and coil
Carburetor
Single Bing carburetor
Exhaust System
Twin steel chrome
Max Power
13.1 kW / 18 hp @ 5590 rpm
Compression Ratio
1: 6.6
Clutch
Multi disc in oil bath
Transmission
4 Speed gearbox housed in engine block foot gearchange
Final Drive
Chain fully enclosed
Frame
Double tubular frame with sidecar adapter.
Front suspension
Twin swinging leading link forks with shock absorber andsteering damper
Rear suspension
Plunger shock absorbersadjustable for load and road conditions
Tyres (front and back)
3.25 x 16 in.
Brakes (front and back)
Drums 180 mm diameter
Dimensions
Length1968 mm / 77.5 in.Width 650 mm / 25.6 in.Height 935 mm / 36.8 in.
Wheelbase
1257 mm / 49.5 in.
Dry Weight
135 kg / 298 lbs
Wet Weight
145 kg / 320 lbs
Fuel Capacity
12 L / 3.2 US gal
Reserve
3.8 L / 1 US gal
Average Consumption
3.6 l/100 km / 27.8 km/l / 65.3 US mpg
Top Speed
125 km/h / 77 mph