Featured Pages Matchless Flat Twin 1916 An Outstanding Design by Harry Collier
Matchless 732cc HO TwinClement Ader The Stuff of Legend
Pioneer in Telephony, Aviation and Motorcycling
Moteurs AderGuzzi's Grandpa A shaft-drive transverse V-twin from 1904, another deft touch from Clement Ader.
Moto-Cardan
Alfeo Rodolfi established Autobicicletta Brevettata Rodolfi Alfeo in Bologna using
both DKW and, from 1924, their own 132cc two-stroke engines. A limited number of motorcycles were built between 1923 to 1927
Models:
ABRA Viaggio 1923
Engine: DKW horizontal two stroke single. Bore 50, Stroke 60. Capacity 117.7cc
Ignition: flywheel magneto
Lubrication: petrol-oil mixture
Gearbox: 3:1 reduction
Final drive: Belt
Frame: Single cradle, steel tube
Wheels: 700x38B tyres
Maximum speed: 45 km/h
ABRA Sport 1924
Engine: DKW vertical 2-stroke single. Bore 52.5, stroke 60. Displacement 129.8 cc
Ignition: flywheel magneto
Lubrication: with petrol-oil mixture
Primary transmission: gears
Gears: 2-speed
Final drive: belt
Frame: simple cradle, steel tube
Wheels: 26x2 tyres
Maximum speed: 65-70 km/h
ABRA Sport 1925
Engine: DKW vertical 2-stroke single. Bore 52.5, stroke 60. Displacement: 129.8cc
Ignition: flywheel magneto
Lubrication: petrol-oil mixture
Primary transmission: gears
Gearbox: 2-speed
Final drive: belt
Frame: tubular cradle
Wheels: tyres 26x2
Maximum speed: 75 km/h
Rodolfi Engine
Specification
Type: auxiliary motor
Production Year: late 20s early 30s
Engine: single-cylinder inclined 2-stroke. Bore 38.8, Stroke 41mm 48.4 cc
Ignition: Dansi flywheel
Lubrication: petrol-oil mixture
