Q Type Crossley Donkey with Queen Mary Trailer

As used by 417 R.S.U. attached to 140 Wing, Mosquito Squadron R.A.F. at Wahn near Cologne in 1945-6. My Father drove these around France, Belgium and Germany at the end of WWII carrying parts of Mosquito aircraft. A complete mainplane could be carried or a fuselage or several Merlin engines.
The term "Q" type referred to the quad or 4 wheel drive capability.

Tractor was Crossley 4 X 4

Tractor wheelbase - 11 ft.

5.2 litre Crossley 30/100 engine

4 Cylinders cast in pairs

Side Valves

Bore 109.5mm, Stroke 139.7mm

100 BHP

Aluminium cylinder heads

Dry sump lubricatiion

Trailer 50ft. long "Queen Mary" total vehicle length 60ft.

5 Ton load evenly distributed on trailer