General Specifications

The Body

Wheel base 7ft 7in. Track 3ft 9in. Ground clearance 8 1/2in. Overall length 11ft 6in. approx.
Overall width 4ft 9in. Height of chassis 17 1/2 in. Weight 14 to 16 cwts.

The bodies were made a Lower Walsall and the final assembly tool place in Graisely Hill

The Chassis

The chassis was built by John Thompson Motor Pressings in Bilston, the bodies were made in Lower Walsall and the final assembly took place in Graisely Hill.

The Engine

The car was fitted with a four-cylinder side valve Coventry Climax engine with a capacity of 1018cc (60mm x 90mm bore and stroke) and an RAC rating of 8.92 h.p. which put it in the £9. 0s. 0d tax class.

9 h.p. 4 Cylinder. Three bearing crankshaft.
Dimensions - 60 m.m. Bore - 90 m.m. Stroke - 1,018 c.c.
RAC Rating - 8.92 h.p. Tax £9.
Brake H.P. - 13 B.H.P at 1,500 R.P.M, 17 B.H.P at 2,000 R.P.M, 24 B.H.P at 3,000 R.P.M.
Ignition - Lucas coil and distributor. Firing order 1,3,4,2.
Cylinder head - cast iron, detachable.
Piston - Special design of lightweight alloy.
Crankshaft - S.26 high tensile steel stamping, dynamically balanced (three bearings)
Crankshaft bearings - High pressure cast white metal linings in gun metal shells
Connecting Rods - S.26 high tensile steel stampings with 3 per cent nickel steel bolts and high pressure cast white metal big end bearings integral with conrod.
Valves - Silico Chrome heat treated steel, arranged side by side.
Camshaft - S.14 steel hardened and ground with mushroom head tappets, driven by double adjustable chain.
Lubrication - Pressure feed to main bearings and connecting rods by means of gear pump.
Oil sump - Capacity, 6 pints.

Clutch

Single plate type completely enclosed in bell housing. Spring pressure is adjustable.

Gearbox

Three speed and reverse, in unit with engine. Gear ratios, 5.5, 10.2, and 19 to 1.
Gear steel - Nickel chrome, oil hardened
Gear control - Centre change speed lever with reverse stop.

Brakes

Internal expanding type on all four wheels
Shoes and linings - 9 in diameter pressure cast aluminium shoes with Ferodo linings.
Hand control - Right hand.