Search results
Results From The WOW.Com Content Network
The Square Four is a motorcycle produced by Ariel between 1931 and 1959, designed by Edward Turner, who devised the Square Four engine in 1928. At this time he was looking for work, showing drawings of his engine design to motorcycle manufacturers. [ 5 ]
Ariel Square Four Mark I: 1949–53 "Square" four-cylinder 995 cc Ariel VCH 1949–53 500 cc all alloy engine competition bike, shorten frame with high ground clearance. Ariel KHA 1953 only all alloy engine version Ariel VHA 1952–53 500 cc alloy barrel and head Ariel Square Four Mark II: 1953–58 "Square" four-cylinder 995 cc Ariel HS 1954–58
One of their first bikes was the Ariel Square Four, designed by Edward Turner, followed by the Ariel Red Hunter. [2] The Red Hunter was a success, and enabled Ariel to purchase Triumph. [8] Ariel 1,000 Square Four. The Ariel Square Four, with a 500 cc engine designed by Edward Turner, was launched for the 1931 season.
Close-up of a 1932 Ariel Square Four 4F 600 cc engine The first Ariel Square Four 4F [ 7 ] was shown at the Olympia Motorcycle Show in 1930 in chain-driven overhead camshaft 500 cc form. This was heavier and slower than Turner's original prototype due to production changes made necessary by the Great Depression .
The 1931–1959 Ariel Square Four motorcycle used a four-cylinder engine (also called a 'square four' engine). The engine was compact and had as narrow a frontal area as a 500 cc, parallel twin. The rear pair of cylinders on this air-cooled engine were prone to overheating. [citation needed]
The engine had even ignition intervals, and was said to be smooth, with little vibration. [3] Brothers George and Tim Healey were Ariel Square Four enthusiasts who upgraded the big 1000 cc engines for racing throughout the 1960s, tuning the performance and building a supercharged sprint motorcycle which doubled the power output. [2]
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
A square four is a U engine with two cylinders on each side. This configuration was used on the Ariel Square Four motorcycle from 1931 to 1959. This design was revived as a two-stroke version on some racing Suzuki models, and their subsequent road-going version the RG500. Although some racing success was achieved, the road bikes didn't sell in ...