The Ariel 4F Square Four 600 was produced from 1932 to 1936 and there were 2647 units made. It had a four stroke parallel twin engine with an overhead cam and a capacity of 601cc. The cooling system was air cooled with a compression ratio of 6.9:1. There were two 1-into-1 exhausts and a carburetor induction with a kick start for starting. In 1939, the motorcycle had a maximum power of 17 kW / 23 hp at 5600 rpm. The transmission was a four-speed Burman with final drive being a chain. The frame was made with brazed-lug tubular semi-cradle construction and duplex down-tube. The front suspension was Ariel centre spring girders while the rear suspension was rigid and a spring loaded saddle. The front and rear brakes were drum and measured 7 inches. The wheels were steel and had laced wire spokes with a front rim of 3.25 x 19 and a rear rim of 3.25 x 19. The wheelbase was 1384mm / 54.5 in and the dry weight was 168 kg / 370 lbs.
Technical specifications:
Make Model: Ariel 4F Square Four 600
| Year | 1932 – 36 |
|---|---|
| Production | 2647 units |
| Engine | Four stroke, parallel twin, OHC |
| Capacity | 601 cc / 36.7 cu in |
| Bore x Stroke | 56 x 61 mm |
| Cooling System | Air cooled |
| Compression Ratio | 6.9:1 |
| Exhaust | 2 x 1-into-1 |
| Induction | Carburetor |
| Starting | Kick start |
| Max Power | 17 kW / 23 hp @ 5600 rpm (1939 model) |
| Transmission | 4-Speed, Burman |
| Final Drive | Chain |
| Frame | Brazed-lug tubular semi-cradle construction, duplex down-tube |
| Front Suspension | Ariel centre spring girders |
| Rear Suspension | Rigid, spring loaded saddle |
| Front Brakes | Drum, 7 in |
| Rear Brakes | Drum, 7 in |
| Wheels | Steel, laced wire spokes |
| Front Rim | 3.25 x 19 |
| Rear Rim | 3.25 x 19 |
| Wheelbase | 1384mm / 54.5 in |
| Dry Weight | 168 kg / 370 lbs |
