1935 NSU 251 OSL Specs

motorcycle specs

These are the known mechanical and performance specifications for your 1935 NSU 251 OSL.

Basic Specs

Year1935
MakeNSU
ModelNSU 251 OSL
TypeSport
Cost

Engine

Displacement242.00 ccm (14.77 cubic inches)
Type
DetailsSingle cylinder, four-stroke
Max RPM
Compression
Bore/Stroke64.0 x 75.0 mm (2.5 x 3.0 inches)
Valves/Cylinder
FuelingCarburettor. Amal or Graetzin
IgnitionBattery-Bosch
Exhaust
Lubrication
CoolingAir

Drivetrain

Gearbox4-speed
Final DriveChain
Clutch
Driveline

Performance

Horespower9.00 HP (6.6 kW)
Torque
Top Speed100.0 km/h (62.1 mph)

Fuel Economy & Polution

Fuel Consumption2.30 litres/100 km (43.5 km/l or 102.27 mpg)
Fuel Capacity11.50 litres (3.04 gallons)
Emissions53.4 CO2 g/km. (CO2 - Carbon dioxide emission)

Chassis

Frame TypeOpen double steel
Rake
Trail
Front Suspension
Front Travel
Rear Suspension
Rear Travel
SeatSingle spring-mounted
Seat Height
Alt. Seat Height
Total Height1,000 mm (39.4 inches)
Total Length2,000 mm (78.7 inches)
Total Width760 mm (29.9 inches)
Ground Clearance
Wheelbase1,285 mm (50.6 inches)
Dry Weight126.0 kg (277.8 pounds)
Wet Weight

Wheels & Brakes

Front Tire/Tyre19-Mar
Rear Tire/Tyre19-Mar
Front BrakesExpanding brake (drum brake)
Front Brake Diameter
Rear BrakesExpanding brake (drum brake)
Rear Brake Diameter
WheelsSpoked

Comments

It appears you're interested in specifications for the NSU 251 OSL. This Sport model is powered by a Single cylinder, four-stroke engine with 242.00 ccm (14.77 cubic inches) of actual displacement before compression. Fueling is metered via Carburettor. Amal or Graetzin allowing this machine to produce its 9.00 HP (6.6 kW) horsepower and torque. According to our records engine heat of the NSU 251 OSL is moderated by Air. You'll need to get familiar with the 4-speed transmission and pay attention to final drive Chain maintainence. Our best information shows that the front tire size is 19-Mar and the rear is 19-Mar. The entire package is supported by the frame, Open double steel. We know you like to go fast or cruise all day, but when you need to stop, you'll be dependant on Expanding brake (drum brake) front brakes and Expanding brake (drum brake) rear brakes. The NSU 251 OSL was launched in 1935, and we're happy to know (or assume) you've got one in your garage. To help you keep your ride in tip-top shape, consider purchasing an owner or service manual.