Douglas (1907-1957)
 
 
Typ / Model Production time Capacity Cylinders / Engine Power Serial no. Top speed  
 
Douglas 2¾HP
Model A		 1907-1908 340 cm³ 2 cyl. (60 x 60 mm) boxer, 4 stroke, side valves, belt drive 2¾ PS 101-128
129-159		  
 
Douglas 2¾HP
Model B		 1909-1910 340 cm³ 2 cyl. (60 x 60 mm) boxer, 4 stroke, side valves, belt drive 2¾ PS 160-441  
 
Douglas 2¾HP
Model C		 1910 340 cm³ 2 cyl. (60 x 60 mm) boxer, 4 stroke, side valves, belt drive 2¾ PS 442-1.464  
 
Douglas 2¾HP
Model D
Model E
Model F		 1911 340 cm³ 2 cyl. (60 x 60 mm) boxer, 4 stroke, side valves, belt drive 2¾ PS 1.465-3.999  
 
Douglas 2¾HP
Model N
Model O
Model P
Model R
Model S
Model T		 1913 348 cm³ 2 cyl. (60.8 x 60 mm) boxer, 4 stroke, side valves, belt drive 2¾ PS 6.940-12.500  



 
Douglas 2¾HP
Model U
Model V
Model W
Model X		 1914-1918 349 cm³ 2 cyl. (61 x 60 mm) boxer, 4 stroke, side valves, belt drive 2¾ PS 12.434-19.000  
 
Douglas 3½HP "Sport"
Model A
Model B		 1914-1915 493.9 cm³ 2 cyl. (68 x 68 mm) boxer, 4 stroke, side valves, belt-/chain drive 3½ PS 1.001-1.888  
 
Douglas 2¾HP
Model U
Model V
Model W
Model WS
Model X		 1916 349 cm³ 2 cyl. (61 x 60 mm) boxer, 4 stroke, side valves, belt drive 2¾ PS 27.152-32.428  
 
Douglas 2¾HP
Model WD
Model W20		 1920 348 cm³ 2 cyl. (60.8 x 60 mm) boxer, 4 stroke, side valves, belt drive 2¾ PS 42.959-48.200  
 
Douglas 4HP
Model B21
Model B22		 1921
1922		 596 cm³ 2 cyl. (74.5 x 68 mm) boxer, 4 stroke, side valves, belt-/chain drive 4 PS 13.051-13.600
13.601-14.280		  
 
S1 "Sport"
S1 RA
S1 OB		 1921-1923 494 cm³ 2 cyl. (68 x 68 mm) boxer, 4 stroke, ohv 3½ PS AF***  
 
Douglas 2¾HP
Model TS
Model W
Model 3SC		 1923-1924 340 cm³ 2 cyl. (60 x 60 mm) boxer, 4 stroke, belt drive 2¾ PS 55.371-64.200  
 
RA 1923-1926 494/600 cm³ 2 cyl. (68 x 68 mm) boxer, 4 stroke, ohv   DF***  
 
Douglas 4HP
Model B23
Model 4HC		 1923 595 cm³ 2 cyl. (74.5 x 68 mm) boxer, 4 stroke, side valves, belt drive / chain drive (4HC) 4 PS 14.281-14.713  
 
Douglas 2¾HP
Model TS25
Model CW25		 1925 340 cm³ 2 cyl. (60 x 60 mm) boxer, 4 stroke 2¾ PS 74.501-84.200  
 
EW 350
(A28/B28/C28)
(A29)		 1926-1929 348 cm³ 2 cyl. (60.8 x 60 mm) boxer, 4 stroke, side valves   MF12000 (1926)
MF20000 (1927)
MF23000 (1928)		  
 
B28 (1928)
B29 (1929)
L29 (1929)		 1928-1930 348 cm³ 2 cyl. (60.8 x 60 mm) boxer, 4 stroke, side valves   WF*** (1929)  
 
DT5/DT6 (Dirt Track)
SW5/SW6 (Speedway)		 1928-1932 499.1/595.6 cm³ 2 cyl. (62.25 x 82 mm) boxer, 4 stroke, ohv /
2 cyl. (68 x 82 mm) boxer, 4 stroke, ohv		   TF**** (DT)
FB**** (SW)		  
 
E29 1929 595.6 cm³ 2 cyl. (68 x 82 mm) boxer, 4 stroke, ohv      
 
H3
L3		 1930 348.4 cm³ 2 cyl. (60.8 x 60 mm) boxer, 4 stroke, side valves   FA****  
 
S5
C31
C32		 1930-1933 499.1 cm³ 2 cyl. (62.25 x 82 mm) boxer, 4 stroke, side valves   YF**** (S5)
FC**** (C32)		  
 
F.31 1931 500 cm³ 2 cyl. (62.25 x 82 mm) boxer, 4 stroke, ohv   FD***  
 
K.32 "Touring" 1932 348.4 cm³ 2 cyl. (60.8 x 60 mm) boxer, 4 stroke, ohv   FI***  
 
"Endeavour" 1935-1936 493.7 cm³ 2 cyl. (68 x 68 mm) boxer, 4 stroke, side valves   AA***  
 
"Aero 600"
DC/38 (1938)		 1936-1939 584.9 cm³ 2 cyl. (74 x 68 mm) boxer, 4 stroke, side valves   AE*** (1936)
6/P*** (1937)
6/Q*** (1938)		  
 
T35 Mark IV 1949-1950 348.4 cm³ 2 cyl. (60.8 x 60 mm) boxer, 4 stroke, ohv, horizontally opposed      
 
80 Plus 1950-1953 348.4 cm³ 2 cyl. (60.8 x 60 mm) boxer, 4 stroke, ohv      
 
90 Plus 1950-1953 348.4 cm³ 2 cyl. (60.8 x 60 mm) boxer, 4 stroke, ohv      
 
T35 Mark V 1950-1954 348.4 cm³ 2 cyl. (60.8 x 60 mm) boxer, 4 stroke, ohv, horizontally opposed      
 
T35 Mark 6 "Dragonfly" 1954, 1955-1956 348.4 cm³ 2 cyl. (60.8 x 60 mm) boxer, 4 stroke, ohv, horizontally opposed 23 PS (6.000 rpm) 1001/6 (1954), 1009/6-2573/6 (1955-1956) 110 km/h