41. Between the motor and the chain drive was a transmission with three forward and two reverse speeds. 42. Shay experimented first with a chain drive from the engine through the floor to the truck axle. 43. The aircraft was a chain drive . 44. It also moved from chain drive to a sealed shaft drive which decreases the amount of required maintenance. 45. Later models used a chain drive . 46. However, some newer synchronous belts have " equivalent capacity to roller chain drives in the same width ". 47. He paid $ 1, 200 . " It had a chain drive and the engine was mounted crosswise. 48. This engine has a chain drive . 49. The over 98 % energy efficiency offered was a vast increase compared with traditional belt and chain drives . 50. This meant that a new chain drive for the camshafts was required to reduce the length of the engine.
