Ariel Four-Cylinder Prototype 1962 Ariel 700cc Four-Cylinder Prototype (696cc Inline Four Cylinder OHV) Electric Start (approximately 20 years before BMW made their version) Engine: 696cc in-line four-cylinder OHV. Fan assisted air-cooling. Zenith carburettor. Wet sump lubrication with pressure fed main and big end bearings. Coil ign. and electric starter. Engine suspended from main beam of frame. |