Maybach were a company with traditional markets in airships, and they made the engines for the 'Graf Zeppelin', forerunner of the most famous line of airships that will be seen in our times. The Maybach V12 was made up from cylinders of 5.875" X 7.875" with a swept volume of 2562 cu ins or 41608 cc. The cylinders had integral heads, and the inlet and exhaust valves were in line along the engine, with the injectors in between. The output was 410 hp at 1400 rpm, with a dry weight quoted of 3690 lbs. One of the more interesting items on the Maybach engine, which was also used by Mercedes and Saurer, was the use of roller and ball bearings for big ends and mains, rather than plain bearings like everyone else.