Key facts

Amplex 30-50 Fore-Door Limousine, 1911 MY information summary

What body style?
sedan/saloon with 6/7 seats
What size engine?
6.6 litre, 6597 cm3
How many cylinders?
4, Straight
How much power?
51 PS / 50 bhp / 37 kW @ 900 rpm
How much torque?


Manufacturer data not found

Simplex Motor Car Company

1911 Amplex 30-50 Fore-Door Limousine technical specifications


The 30-50 Fore-Door Limousine is a rear wheel drive saloon (sedan) automobile with a front positioned engine, sold by Amplex.
It is powered by a naturally aspirated engine of 6.6 litre capacity. This powerplant features two stroke valve gear, 4 cylinder layout,. It produces 50 bhp (51 PS/37 kW) of power at 900 rpm.
The engine powers the wheels through a 3 speed manual transmission.
1911 Amplex 30-50 Fore-Door Limousine data
Amplex 30-50 Fore-Door Limousine, 1911 MY data
Body type6/7 seater sedan/saloon
Number of doors4
dimensions & weights
Wheelbase 3251 128
Track/tread (front) 1422 56
Track/tread (rear) 1422 56
Ground clearance
length:wheelbase ratio
Kerb weight
Weight distribution
fuel tank capacity 87.1 litres 19.2 UK Gal 23 US Gal
Drag coefficient
Frontal area
engine type naturally aspirated petrol
Engine manufacturer
Engine code
Cylinders Straight 4
Capacity 6.6 litre
6597 cc
(402.574 cu in)
Bore × Stroke 128.59 × 127 mm
5.06 × 5 in
Bore/stroke ratio 1.01
two stroke (TS)
0 valves per cylinder
0 valves in total
maximum power output 51 PS (50 bhp) (37 kW)
at 900 rpm
Specific output 7.6 bhp/litre
0.12 bhp/cu in
maximum torque
Specific torque
Engine construction
compression ratio
Fuel system 1 Amplex carburettor
bmep (brake mean effective pressure)
Maximum RPM
crankshaft bearings 5
Engine coolant Water
Unitary capacity 1649.25 cc
Aspiration Normal
Compressor N/A
Intercooler None
Catalytic converter N
Acceleration 0-80km/h (50mph)
Acceleration 0-60mph
Acceleration 0-100km/h
Acceleration 0-160km/h (100mph)
Standing quarter-mile
Standing kilometre
Maximum speed
Power-to-weight ratio
Weight-to-power ratio
fuel consumption
Fuel consumption
universal consumption (calculated from the above)
litres per 100km
km per litre
Carbon dioxide emissions
Carfolio Calculated CO2 ?
VED band (UK)
CO2 Effizienz (DE)
Engine position front
Engine layout longitudinal
Drive wheels rear wheel drive  
Torque split N/A
Steering screw & nut
turns lock-to-lock
Turning circle
Front suspension LA.SE.
Rear suspension LA.SE.
Wheel size front
Wheel size rear
Tyres front 36 x 4
Tyres rear 36 x 5
Brakes F/R -/Dr
Front brake diameter
Rear brake diameter
Gearbox 3 speed manual
Top gear ratio 1
Final drive ratio
general ID296120
Production total
Model code
Model family
RAC rating 41.0
Insurance classification No information available
Tax band No information available
1911 Amplex 30-50 Fore-Door Limousine added 2012-11-27.
Last modified 2013-02-28.

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1911 Amplex 30-50 Fore-Door Limousine

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