Chuck Walton Restoration,1959 ARIEL  998CC 4G SQUARE FOUR MKII Frame no. CGM1809 Engine no. CNML1879

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Lot 122
Chuck Walton Restoration,1959 ARIEL 998CC 4G SQUARE FOUR MKII
Frame no. CGM1809 Engine no. CNML1879

Sold for US$ 23,000 inc. premium
Chuck Walton Restoration
1959 ARIEL 998CC 4G SQUARE FOUR MKII
Frame no. CGM1809
Engine no. CNML1879
In 1928, engineer Edward Turner was shopping a new motorcycle design to English manufacturers. BSA turned him down, but Ariel was interested. The engine was an unusual four-cylinder - two vertical twins sharing a common crankcase. The cylinder barrels were cast as a unit. Their two crankshafts were joined by a flywheel and rotated in opposite directions, making it practically vibration free. The OHC 500cc Ariel Square Four 4F made its debut at the 1930 Olympia Motorcycle Show.

Improvements were continuous during the Square Four's 28-year production run. The 4G was introduced in 1936 with a new 996cc overhead-valve engine.

Our subject bike is the final iteration of the Ariel Square Four; the Mark II was introduced in 1953 and is the most desirable model of this iconic motorcycle. The single "four pot" cylinder barrel was replaced by individual units and four separate exhaust pipes were thus needed; these together with the separate barrels eliminated the overhead-camshaft engine's weakness of overheating the rear cylinders. A redesigned head with an "car type" SU carburetor upped the power and the Square Four now had no problem reaching "the ton" – 100 miles per hour. Square Four production, along with that of all other Ariel 4-strokes, ceased in 1959. To date, the innovative Ariel Square Four remains unique in motorcycling history; a true gentleman's motorcycle, this refined yet charismatic machine retains an enthusiastic and loyal following, and is highly prized by discerning enthusiasts.

This machine is a beautifully restored, fully functional late model Squariel, built to be truly ready to ride – remember that Ariel was bragging back in 1958 that these late machines were capable of 100mph without overheating This fine bike was restored by Chuck Walton, arguably the world's most experienced Square Four restorer and Ariel marque expert who happens to reside in California.
Contacts
Chuck Walton Restoration,1959 ARIEL  998CC 4G SQUARE FOUR MKII Frame no. CGM1809 Engine no. CNML1879
Chuck Walton Restoration,1959 ARIEL  998CC 4G SQUARE FOUR MKII Frame no. CGM1809 Engine no. CNML1879
Chuck Walton Restoration,1959 ARIEL  998CC 4G SQUARE FOUR MKII Frame no. CGM1809 Engine no. CNML1879
Chuck Walton Restoration,1959 ARIEL  998CC 4G SQUARE FOUR MKII Frame no. CGM1809 Engine no. CNML1879
Chuck Walton Restoration,1959 ARIEL  998CC 4G SQUARE FOUR MKII Frame no. CGM1809 Engine no. CNML1879
Chuck Walton Restoration,1959 ARIEL  998CC 4G SQUARE FOUR MKII Frame no. CGM1809 Engine no. CNML1879
Chuck Walton Restoration,1959 ARIEL  998CC 4G SQUARE FOUR MKII Frame no. CGM1809 Engine no. CNML1879
Chuck Walton Restoration,1959 ARIEL  998CC 4G SQUARE FOUR MKII Frame no. CGM1809 Engine no. CNML1879
Chuck Walton Restoration,1959 ARIEL  998CC 4G SQUARE FOUR MKII Frame no. CGM1809 Engine no. CNML1879
Chuck Walton Restoration,1959 ARIEL  998CC 4G SQUARE FOUR MKII Frame no. CGM1809 Engine no. CNML1879
Chuck Walton Restoration,1959 ARIEL  998CC 4G SQUARE FOUR MKII Frame no. CGM1809 Engine no. CNML1879
Chuck Walton Restoration,1959 ARIEL  998CC 4G SQUARE FOUR MKII Frame no. CGM1809 Engine no. CNML1879
Chuck Walton Restoration,1959 ARIEL  998CC 4G SQUARE FOUR MKII Frame no. CGM1809 Engine no. CNML1879
Chuck Walton Restoration,1959 ARIEL  998CC 4G SQUARE FOUR MKII Frame no. CGM1809 Engine no. CNML1879
Chuck Walton Restoration,1959 ARIEL  998CC 4G SQUARE FOUR MKII Frame no. CGM1809 Engine no. CNML1879
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