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OPT 1919 HO Engine
An "O.P.T." engine - a flat twin two-stroke with common combustion space.
Credit:
The Motor Cycle
Engine Manufacturers
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Index
ABC Flat Twin Engine c.1916
Alter CM50
Alter VL95
AMC 175cc Engine 1951
AMC Engine Diagram 1954
AMC Engine Diagram 1954
AMC 125 175 250cc Engines c.1956
Aster 1906 Engines
Moteurs Aubier & Dunne, 1948
AZA Two-stroke Engine, 1923
Azzariti Desmo c1930
B. and H. engine 1921
B. and H. engine 1921
1921 B. and H. engine
Bark Engine Type 20Z & 30Z, c.1930
Bergman 1921 V-Twin Engine
Blackburne 350cc SV 1931
Bradbury Flat Twin Engine 1916
Briban 125cc Engine 1953
Briban Engines 1956
Briban Bloc Moteur Type S.A.B.B.
COM 175cc Engine c.1928
Coventry Simplex 4 Cyl Engines 1910
Coventry Simplex Cyclecar Engines 1913
De-Luxe V-Twin
Desmo Systems 1955
Douglas 2 3/4 hp Flat Twin Engine 1916
4 HP Douglas Flat Twin Engine 1916
Duten Engine c1927
Motorcycle Engines of 1922
Motorcycle Engines of 1922
Motorcycle Engines of 1922
Motorcycle Engines of 1922 P813
Motorcycle Engines of 1922
Forman 2 1/2hp SV Engine 1912
Harrissard Engines 1926
Himo Type 56
Indian 1916 Flat Twin 2 1/4hp
Daimler-Knight 1908 Engine
Kuechen 1929 OHC 3 Valve
Kuechen 1929 OHC 3 Valve Engine
Kuechen 1929 OHC 3 Valve Cylinder Head
Kuechen 1929 OHC 3 Valve Pushrod Drawing
Küchen Valve Diagram
Kuhne 350cc 500cc OHV Engine, c1928
Kuhne 500cc SV Engine, c1928
Le Poulain 1949
Le Poulain 50cm3 85cm3 Engine Diagram
LMP 350cc OHV 1929
LMP Engines 1931
LMP Engines, France
Mepward Engine, 1920
Metric V-Twin 1919
Metric Co Engines, 1919
Metric Co Cylinder Head, 1919
Metric Co, London, Engine Diagram, 1919
Microma Engine 1947
Mistral 1953
Mistral 1954, Saint-Etienne
Montgomery Flat Twin Engine 1916
Mosquito Engine, Made in France
Newson 1921 Engine
OPT 1919 HO Engine
Pauvert 1930 175cc 2T Engine
Péa 350cc P3 Engine
Péa Engines 1939 - P1, P2, P3.
Power-Pup 1939
Rotax V256 water-cooled engine
Rotax V256 twin cylinder twostroke
SEPT Engines, 1923
Sotecma Engine, 1951
S.O.T.E.C.M.A. Engines 1953 Drancy
Stainless BMA Engines, Paris
Staub 1928 M3 Bloc Moteur
Staub M3 Drawing
Staub Gearboxes - Boite de Vitesses
Televel Sachs Engines, Argentina
Vimer 50cc Engines c1954
Ydral 125 Hirondelle
Ydral 1953 Type AJ54 125cc
Ydral 1954 with Gyrostarter
Ydral 125cc Type AJ54, 1953
Ydral Type AJ55 125cc
Ydral Type L45
Ydral Type L49 175cc
Ydral Type L54 125cc
