S p e c s:

1957 - 1959
Made under license in England
engine: single cylinder, air cooled 2-stroke
induction: piston ported
bore: 57 mm
stroke: 57 mm
cubic capacity: 145.6 cc
compression ratio: 6.3: 1
bhp at rpm: 5.4 @ 5,000
lubrication: 5% oil
transmission: 3 speed constant mesh
1st gear: 12.2: 1
2nd gear: 7.46: 1
3rd gear: 4.73: 1
clutch: wet - 3 cork plates
carburetor: Dell 'Orto MA/19D
main jet: 75
needle jet: 2.60
needle position: 3
throttle valve: No.50
pilot jet: 40
ignition: contact breaker & coil
ignition timing: 28 degrees BTDC
breaker gap: 0.3 - 0.5 mm
voltage: 6 volt AC
battery: 6V 9ah
wheels: 8"
tires: 3.50 x 8"
 
 

This bike was basically an Italian VB1T that was only finally assembled by Douglas and given the "Clubman" name.