Ariel Square Four — The Real Classic Bike Guide —

28 Янв 2015 | Author: | Комментарии к записи Ariel Square Four — The Real Classic Bike Guide — отключены
Ariel 500 SquareFour

Ariel Square Four

The Four had a lifespan of over 25 and several incarnations of all sizes 500cc to 1000cc. If you thought all old British bikes were 650 then read on.

Ariel’s Four started life in designed by a young Edward who drew his original idea for the Four on the back of a fag packet, and took it to several manufacturers. BSA interested but Ariel were to try it out. Turner was hoping to a four-cylinder engine small for use in a solo motorcycle, yet producing power for really high without undue compression, cams or a big-choke carburettor. I was at the ultimate reliability with the of attention’

When introduced, the Square was as with its remarkably compact slotted into a twin downtube chassis similar to used by Ariel’s 500 singles, girder forks and a rigid end. The original OHC engine can be as being similar to two parallel which shared a common with the two crankshafts geared at the middle pinions, and a common block and head. The overhead was chain driven.

Early used a hand-change, four-speed gearbox.

The Square grew to in 1932 to give it a little power, and was intended to be used as a sidecar tug. It was very but somewhat sedate, and the engine was not to tune for peppier performance.

By the late 1930s the 997cc was introduced with an OHV pushrod, engine, alongside a similarly-engineered version. The front end still girder forks but the rear Frank Anstey’s sprung suspension system.

Postwar, the adopted an alloy engine, some 30lb in weight. The machine weighed around dry, produced 35bhp at and matched oil-damped tele to the Anstey link rear

In 1953 the most famous Mk2, still with link rear suspension, was Although Ariel built of a Mk3 with Earles forks in the model wasn’t put into so the Mk2 ended the line when it was in 1959. The final factory of the Square cost Ј336.16.6 new in

A non-running 1955 Mk2 4-piper was for private sale at the end of 2005 for

THE ARIEL OWNERS’ MCC welcome all enthusiasts, be they owners or admirers. See for details the club’s excellent monthly spare part scheme, transfers and regalia, technical machine dating service, rally and concours competition and other rallies and scenic For membership info send an SAE to Hemingway at 80 Pasture Lane, Bradford BD14 6LN

DRAGANFLY manufacture and stock a vast of spare parts for Ariels between 1926 and 1965. and Graham have been in the marque for over 20 years and a 130-page catalogue for 4-… (available on cd or as a booklet, both for a See or call 01986

TO READ UP ON THE BREED we recommend Books’ Ariel Square Limited Edition Extra 1 855 20623 4), and Mick Walker’s The Complete Story (published by ISBN 1 86126 645 6). There are great older publications, but these are very much after and hardly ever See to search Amazon’s

JOHN BUDGEN’S STOCK OF SPARES frequently turns up magical NOS part which you you had no hope of finding, ever. also has new items, like petrol tanks and Lycett-style made. See or call 621495

1958 Ariel Square

Engine: Air cooled 4-… ohv four

Displacement: 997cc

x …: 65 x 75mm

Compression 7.2:1

Carburation: single SU

Claimed power: 42hp @

Transmission: 4-speed

Ariel 500 SquareFour
Ariel 500 SquareFour

Electrics: 6V battery, coil ignition

Steel diamond

Front Telescopic forks

Rear Twin link-and-plunger units

brake: 8-in (203mm) sls

Rear brake: 8-in sls drum

Front tyre: x 19in (Avon SM)

Rear 4.00 x 18in (Avon SM)

Wheelbase: 56 inches / 1422mm

height: 30 inches / 787mm

capacity: 5 gallons / 23 litres

425lb / 197kg dry

Ariel 500 SquareFour
Ariel 500 SquareFour
Ariel 500 SquareFour
Ariel 500 SquareFour
Ariel 500 SquareFour
Ariel 500 SquareFour


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