The British War Office issued a specification for half-tracked vehicles in 1923 and ran a competition in 1925. Crossley signed a licencing agreement with Citroen-Kegresse on 19 January 1925 and entered a BGT with Kégresse tracks at the trials which was held in February. Crossley came out best in the trials and orders were placed for 15-20 cwt and 3 ton chassis. 115 in total were ordered by the British Army and RAF, 55 of which were for the 15-20 cwt models. An unknown but small number were also sold privately.

The Kégresse option was available on the following chassis -

Model chassis number range payload date
15-20 cwt 25xxx 15-20cwt 1925-7
IGL2 30xxx 3 ton 1926
BGV 1 and 2 60151-60195 15-20 cwt 1927
BGV 3 and 4 6xxxx 20-30 cwt 1929


One experimental IGL with a "positive drive" track and rated at 4 tons was made in 1928.

One complete and possibly two partial vehicles are believed to survive.

BODY STYLES

Crossley 15-20 Kegresse car

15-20 cwt with staff car body

Photo - Imperial War Museum

Crossley Kegresse 15-20 cwt truck

15-20 cwt type truck

Crossley Kegresse 15-20 van

15-20 cwt type truck with tilt cover erected.

Crossley Kegresse track

IGL2 type Kégresse attachment

Crossley BGV type kegresse

20-30 cwt BGV type

Crossley IGL2 Kegresse

3 ton IGL2 type

SPECIFICATION

Engine/gearbox/transmission
Engine Type 15-20 cwt - Crossley 14hp
IGL2 - Crossley 25/30
BGV - Crossley 20/60
capacity Crossley 14hp - 2388cc
Crossley 25/30 - 4531 cc
Crossley 20/60 - 3705cc
cylinders 4
bore 3⅛ inches(80 mm)
4 inches (101.6 mm)
3½ inches (88.9 mm)
stroke 4¼ inches (120 mm)
5½ inches (140 mm)
5 7⁄8 inches (150 mm)
compression ratio
carburettor 15-20 cwt - Solex.
IGL2 - Zenith vertical type
valves side
lubrication dry sump (IGL2)
ignition magneto
max power 14hp - 32 bhp at 2,400 rpm
25/30 - 65 bhp
20/60 - 60 bhp at 2500 rpm
fuel consumption (typical)
max speed (approx)
Gears 4 speed gearbox with 2 speed transfer box.

main ratios
1:1, 1.812:1, 2.862:1, 4.610:1 (15-20 cwt)
1:1, 1.884:1, 3.291 :1, 5.447:1 (IGL2)

transfer box
8.45:1 or 35.77:1 (15-20 cwt)
7.27:1 or 34.43:1 (IGL2)
Clutch Single dry plate (15-20cwt)
Inverted cone (IGL2)
Axle Front - beam axle
Rear - Kégresse track unit with differential locks