![]() ![]() The automatic transmission they created was often unreliable since weights often flew apart, causing the transmission to fail.Īn essential development that helped inventors arrive at an automatic transmission was the planetary transmission used in a vehicle's gearbox. Weights and bands operated their two-speed "horseless carriage" gearbox. Tiptronic transmissions were created by Porsche.Īccording to Auto Repair San Antonio, just over 100 years ago, manual transmissions were the only option for drivers until the Sturtevant brothers of Boston attempted the first automatic transmission in 1904.
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