Please see the most recent updates in the "Where did the .com name go?" thread. Posts number 16 and 17.
Cees
Those are some seriously nice radial engines you have put together.
OBIO

Great work so far Cees! Good to see you've picked up one of Fokker's less successful designs.
Found a photo of the three prototypes which show three different engines, three different landing gear configs and at least two different wing configs!
One was designed with a Jaguar engine for Italy but ended up in Manchuria of all places, the second prototype had a Bristol jupiter engine and was sold to Hungary who ordered another three aircraft.
The last one had the 625 hp Curtiss Conqueror and was built for the LA-KNIL but after the prototype crashed no aircraft was ordered. The Dutch LVA did order the D.XVI, but with the Jaguar engine. Fourteen were ordered, and registered 275-288. Vijf crashed within a short time span, and other suffered from engine failures so the aircraft was restricted to a limited range away from the field. Reducing the diameter of the pistons a bit helped to solve the engine problem, but increased the oil consumption limiting the endurance of the aircraft to 1.5 hours while it could carry enough fuel for 3 hour! On may 10th 1940 only the 277 was still operational, flying with the 'jachtvliegschool' at De Vlijt and was captured intact by the Germans.
The aircraft in the picture are all early models

