21. However, having inherited some worm-gear machinery from Lanchester Motors, BSA opted to specify worm drive rather than bevel gears . 22. Examples of such sections are the transverse section of bevel gear teeth and the normal section of helical teeth. 23. For a shaft-driven bicycle the gear ratio depends on the bevel gears used at each end of the shaft. 24. There are bevel gears driving coaxial contra-rotating double 4 blades screws to propel torpedo running straight under the water. 25. The most familiar kinds of bevel gears have pitch angles of less than 90 degrees and therefore are cone-shaped. 26. The engines had separate cylinders on the crankcase and an overhead camshaft driven by a vertical shaft and bevel gears . 27. These engines had bevel gear shaft drive to the overhead camshaft, and were produced in round, square, and Mille crankcases. 28. It differs from a geared differential by using several small ball bearings rotating between two plates, instead of bevel gears . 29. The overhead camshaft is driven by a vertical shaft through bevel gears , which also forms the armature of the dynamo. 30. It was coupled to a Standard 10 gearbox and drove the rear wheels via a propeller shaft and hypoid bevel gear .
