An
ERA racer from 1935, deceptively simple model,
not such a simple car. As
to the ERA "Voiturette" racers—
ERA A:
Design: Berthon/Railton
Engines:
6 cyl in-line
57.5 * 69.8mm 1087cc 2 valves/cyl Roots supercharger
6 cyl in-line 57.5 *
95.2mm 1488cc 2 valves/cyl Roots supercharger 150-175 BHP/6500 RPM
6 cyl in-line
62.7 * 107.0mm 1982cc 2 valves/cyl Roots supercharger
Transmission:
4 speed gearbox in unit with engine, Armstrong-Siddley preselector
Chassis:
channel section side members
Suspension:
Front: Semi elliptic
leaf springs, friction dampers
Rear: Semi elliptic leaf springs, friction
dampers
Dimensions:
Wheelbase: 243.8 cm Front track: 133.4
cm Rear track: 121.9 cm
Year: 1934 4 cars built
ERA
B:
As ERA A except for:
Year: 1935 13 cars built
ERA C:
As ERA B except for:
Design:
Berthon/Railton/Porsche
Engines:
6 cyl in-line 57.5 * 95.2mm
1488cc 2 valves/cyl Roots/vane supercharger
6 cyl in-line ? * ? mm 1750cc
2 valves/cyl Roots/vane supercharger
6 cyl in-line 62.7 * 107.0mm 1982cc 2
valves/cyl Roots/vane supercharger
Suspension:
Front: Trailing
arms, transverse torision bars, hydraulic dampers
Rear: Semi elliptic leaf
springs, hydraulic dampers
Year: 1937 3 cars rebuilt from B type
ERA D:
As ERA C except for
Year:
1938 1 car rebuilt from C type
The superchargers were of 100mm/120
mm Murrey-Jamieson Roots or of Zoller vane type.
As
to the model, its distinctive blue and yellow livery (which were Thailand's international
racing colors) indicate it is without a doubt—
R12B
/ R12C "HANUMAN"
1936 Works (Mays, Cook, Fairfield, Dobson)
1937
upgraded R12C
CORONATION TROPHY Fairfield
NUFFIELD TROPHY (HC) Fairfield
GP d´ALBIGEOIS Mays/Cook
GRAND PRIX DE BERNE Dobson
JCC 200 MILE RACE
Dobson
1938
Chula ("B Bira", a
prince of Siam,
now Thailand)
CORK GRAND
PRIX "B Bira"
NUFFIELD TROPHY (HC) Bira
1939 crashed- rebuilt
1500cc 120mm Roots/Vane
NUFFIELD TROPHY "B Bira" Information
from Leif Snellman's Golden
Era pages |
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