Made in Germany
Manufactured: 1922-1954 (or 1922-1958 according to one source)
Franz Bücker, Fahrzeugbau, Oberursel
Franz Bucker was a successful motorcycle racer, and many of the machines he rode were of his own construction. They were constructed in the Fokker workshops in which he worked during WWI building the engines which powered the Fokker D-1 - the model famed Red Baron flew.
Postwar, a Bucker machine reportedly won the German Grand Prix of 1949. Production machines began with the JLO 250cc Ilona, shortly followed by the twin-cylinder 250cc Ilona II. Peak production was around 500 units annually.
Franz Bücker enlisted in the German army in 1914 as a mechanic in the engine factory in Oberursel. In this factory the army manufactured engines for the Fokker DR 1, the aircraft of Manfred von Richthofen, the "Red Baron".
After WW I he began a motorcycle repair and manufacturing business. The motorcycles became known as reliable and fast bikes. Bücker won a couple of races. For street races, he used an engine with a normal compression ratio. For track races, he had to raise the compression ratio and added a dome to the top the piston by welding on some material. High quality pistons were rare and expensive in the twenties, and he turned the dome off for the next street race - or so the story goes. Once could of course achieve a similar result using cylinder head spacers.
The fastest Bücker motorcycles were the 1000cc bikes with 55 HP JAP-JTOR-V-Twin engines, first released in 1930. They had a top speed of more than 170 kilometers per hour.
Production came to a standstill during WW II. After the war, the factory was under American control. New models were released in 1948 with 125 and 250cc engines. They were sold all over Germany and in Belgium, the Netherlands, Greece, Sweden and Switzerland.
1949 Bückner began to use ILO (ESPERANTO for "good tool") engines
for his motorcycles. The first model was the TZ 125 with 5,4 HP, followed
by the TZ 125 S with 7,5 HP in 1950. The TZ 175 had 175cc ILO engines with
3- or 4speed transmissions. The annual production numbers reached 500 units.
In 1952 Bückner had two 250cc models: the ILONA I with a 250cc 1-cyl. 12,5 HP ILO engine and the ILONA II with the brand new 2x125cc ILO Twin engine with 15 HP/6000rpm.
1953 brought the new TZ 200, but production numbers fell to 400 units. In 1954 a 50cc moped entered the showrooms, but the production numbers reached only 165 units, and the motorcycle production was stopped.
Franz Bücker became a car dealer for FORD and GLAS, and the business boomed. Franz Bücker died in 1980.