The engine was designed as a five-cylinder radial, to use as many parts of the
Bristol Jupiter as possible. Cylinders, pistons, articulated connecting rods, crankshaft and other minor parts were interchangeable with the Jupiter. The major significance of the Titan was that it was licensed to
Gnome-Rhône and became the pattern for the
Gnome-Rhône 5B and 5K. In 1927, Gnome-Rhône was looking for ways out of its licence agreement with Bristol for the
Jupiter engine of 1920 and began to produce the Gnome-Rhône 5B and 5K without royalties. Gnome-Rhône was not satisfied with producing Bristol designs under licence, and started a major design effort based around the mechanics of the Titan engine. The results were introduced in 1927 as the K-series, spanning the Gnome-Rhône 5K Titan, the seven-cylinder
Gnome-Rhône 7K Titan Major, and the nine-cylinder
Gnome-Rhône 9K Mistral. As a result, Gnome-Rhône ended royalty payments to Bristol, and the Gnome-Rhône 5K were built in much greater numbers than the original Bristol Titan. By 1930 they had delivered 6,000 Jupiters, Mistrals and Titans, making them the largest engine company in France. ==Variants==