Friends of the Austin Counties Cars - Austin A40 Devon Profile

Road Test Data (1951)

Maximum Speed through gears: Second Gear, 37 m.p.h., Third Gear, 47 m.p.h., Top Gear, 70 m.p.h.

Acceleration through the Gears: 0-30 m.p.h., 6 secs.; 0-50 m.p.h., 18.8 sec.; 0-60 m.p.h., 29.8 sec.

M.P.G. at normal driving speeds - 35 m.p.g
Braking to stop from 30 m.ph. - 31 ft.

Specifications

ENGINE.

4 cylinder o.h.v. engine. Bore 65.4 m.m. x Stroke 89 m.m. 1200 c.c. Developing 40 b.h.p. at 4,300 r.p.m. 10.6 (RAC) h.p. Three bearing crankshaft. Full pressure lubrication and split skirt anodized alloy pistons. Compression ratio 7.2 to 1.

TRANSMISSION.

Four speed gearbox with central control. Synchromesh on second, third and top gears. Single dry plate clutch.

Gear Ratios:

GS.2 (early)	GS.2 (later)	GS.3
	1st. 20.08:1	1st. 20.00:1
	2nd. 12.5:1	2nd. 12.52:1
	3rd. 7.88:1	3rd. 7.89:1
Top. 5.48:1 ?	Top. 5.14:1	Top. 5.14:1
	Rev. 26.6:1	Rev. 27.68:1

STEERING.

Turning Circle: 38 Ft.

SUSPENSION.

Independent front suspension with lateral wishbones and coil springs. Semi-elliptic zinc interleaved rear springs. Armstrong hydraulic dampers.

WHEELS.

Sixteen inch steel disc wheels with 5.00 x 16 in. tyres.

DIMENSIONS.

Wheelbase, 7 ft. 8 1/2 in.
Track (front), 4 ft. 1/2 in.; (rear) 4 ft. 1 1/2 in.
Overall length, 12 ft. 9 in.

Maintenance Data

IGNITION TIMING: 1/4 mark on flywheel at T.D.C.
SPARK PLUG GAP: 0.017 to 0.018 in.
CONTACT BREAKER GAP: 0.012 in.
TAPPETS: Inlet 0.015 in. Exhaust 0.015 in.
FRONT WHEEL TOE-IN: 0 ins. to 1.16 in.
CAMBER ANGLE: 1 Degree
CASTOR ANGLE: 2 Degrees
TYRE PRESSURES: Front, 20/23 lb. Rear, 23/26 lb.
BRAKE FLUID: Girling Crimson
SHOCK ASSORBER FLUID: Armstrong
FUEL TANK: 8 3/4 Gallons
SUMP: 7 Pints plus 1 for the Filter
GEARBOX: 2 1/4 Pints S.A.E. 140.
REAR AXLE: 2 3/4 Pints S.A.E. 140.
CHASSIS LUBRICATION: 24 Oil Gun Nipples