In the late 1960s, some of the double cab SU-COE tractors were converted to glider winches. 10 or 12 were converted.
The winch engine was a Buick 8 cylinder 130-hp inline petrol engine with a Dynaflow automatic transmission delivering power to a DAF rear axle onto which two winching drums were fitted. I think the engine was a Buick Straight-8 engine (Fireball 8), as produced from 1931 to 1953.
The SU-COE glider winches were painted yellow at some point in time as they were used by civilian glider clubs. This photo was taken ca. 1980.
Souce:
https://nimh-beeldbank.defensie.nl/f...1-f2ed9a2b3b70