Why the Super 10 Didn’t Shift Like a Regular Ten-Speed

The Eaton Super 10 had ten forward gears but only five shift positions. Drive it like a regular Fuller ten-speed, and you could end up skipping half the gears without realizing what you were doing. The Super 10 demanded a different shifting rhythm, with a splitter button, no separate range lever, and gear changes that didn't always happen the moment the driver selected them. Behind that unusual shift pattern was an Eaton transmission design that combined a three-speed main section with auxiliary range and splitter gearing. For experienced truck drivers accustomed to working the stick and listening to engine speed, the Super 10 required some unfamiliar habits. Eaton's own driver manual warned operators to be patient during button shifts and even recommended watching the tachometer rather than relying on engine sound. From the earlier Twin Splitter development to the Super 10's unusual gear ratios and later Top Two system, the design reflected a changing era in American heavy trucking. It gave drivers new ways to manage their gears, but it also challenged techniques learned over years behind the wheel. The details explain why this Eaton Fuller transmission remained such a distinctive experience for the men who drove it. --------- We do not fully own the material compiled in this video. It belongs to individuals or organizations that deserve respect and consideration. This video was created under the Fair Use Law Section 107 of the U.S. Copyright Act of 1976. "Fair use" is allowed for purposes such as criticism, comment, news reporting, teaching, and research. It is transformative in nature, uses no more of the original than necessary, and has no negative effect on the market for the original work. #vintageamericanmachines #vintageengines