Type
3S RDSR
Number of doors
2
Wheelbase
3251 mm 128 in
Track: Front
1422 mm 56 in
Track: Rear
1422 mm 56 in
Bore
69.85 mm
Cylinders
V-12
Displacement
5.5 litre5548 cc(338.56 cu in)
Fuel system
1 Rayfield carburettor
Maximum power
81.1 PS (80 bhp) (59.7 kW)@ 2800 rpm
Specific output
14.4 bhp/litre0.24 bhp/cu in
Manufacturer
National
Coolant
Water
Bore/stroke ratio
0.58
Unitary capacity
462.33 cc/cylinder
Aspiration
Normal
Compressor type
N/A
Intercooler
None
Catalytic converter
N
Engine location
Front
Engine alignment
Longitudinal
Drive
RWD
Steering
worm & gear
Suspension
front
Tyres: Front
36 x 4½
Tyres: Rear
36 x 4½
Transmission
3 speed manual
Top gear ratio
1.00
Final drive ratio
4.58
RAC rating
36.3
year
1916
Firma präsentierte mit dem National Highway Twelve ein V12-Zylinder-Modell, eines der ersten in den USA. Dieses Modell war mit US-$ 1.900,- – 3.