Ariel Motorcycles

Ariel Motorcycles 1920

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Ariel 4½ h.p. 1920

With 28in. x 3in. wheels, the new 4½ h.p. single-cylinder Ariel is a full size touring outfit. Observe the large locker at the rear of the sidecar, taking the place of a luggage grid.

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Ariel Technicalities, 1920

Sections of Ariel new front hub, spring fork, and shackle bearings, showing in each case, lubricating arrangements.
Large forks and wide guards are notable features of the new models exhibited by Ariel Works, Ltd.

Ariel. (Stand 97.)

  • 4½ h.p.; 86.4x100 mm. (585 c.c.); single-cylinder four-stroke; side-by- side valves; mechanical lubrication; B. and B. carburetter; chain-driven magneto; three-speed sliding pinion gear; chain drive; 28x3in. tyres.

  • 6-7 h.p.; 73x95 mm. (795 c.c); twin-cylinder four-stroke; side-by-side valves; drip feed lubrication; B. and B. carburetter; chain-driven magneto; three-speed sliding pinion gear; chain drive; 28x3in. tyres.

Ariel Works, Ltd., Bournbrook, Birmingham.

Two new models are this year exhibited by this well-known Birmingham firm, and, except for the engines, the machines are identical. The 6-7 h.p. twin engine in one of these is little altered since the last Show, and is one of the few long-stroke twins on the market. The gear boxes, too, are as in the 1920 models, and are good examples of three-speed counter-shaft gears, in every way conforming to up-to- date practice.

The 4½ h.p. single-cylinder engine is entirely new, embodying mechanical lubrication and a decompressor t facilitate starting. For this reason an exhaust valve lifter has been dispensed with. A plain bearing of exceptionally large diameter is used on the driving side main shaft, oil being led to it by ducts cast in the crank case.

A massive steering head, particularly large forks, and a strongly-built frame rather higher than usual are the main characteristics of the machine itself, but close examination reveals that careful attention has been paid to lubricating the wheel hubs and fork links, which are drilled to permit a charge of oil being injected through their ends. The large tyres, spring seat-pillar, ample foot-boards, and wide guards are all points which add to the rider's comfort.

  • 3½ h.p.; 85.4x85 mm. (498 c.c.); single-cylinder four-stroke; side-by-side valves; drip feed lubrication; B. and B. carburetter; E.I.C. chain-driven magneto; two-speed gear; chain and belt transmission; 26 x 2 3/8 in. tyres.

A solo machine of considerable attraction, the Ariel is well known for its prowess in trials, and also by reason of the fact that on this machine was introduced the decompressor. Of very compact build, the Ariel provides a low and comfortable riding position. A new design front fork has been evolved, and another feature which adds to the comfort of the driver is the special spring seat-pillar.

Olympia Show, 1920

The Motor Cycle, December 2nd, 1920.


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