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POUST USA SITE

HONE OVERDRIVE UNIT

In the late 1960's, Fred Hone marketed and sold the Hone-O-Drive, an overdrive unit he had been developing for four years. Opening the Hone Manufacturing Company in Santa Fe Springs, California, Fred designed and built this self-contained, fully lubricated, 2-speed synchromesh planetary transmission that is manually shifted from 1:1 Direct Drive to a 1.43:1 (or 1.47:1, depending on which article you read) Overdrive. This effectively changed a car with a 4.11 rear axle ratio into one with a 2.87 ratio. Engagement / disengagement is supposed to be available at any time with no neutral or freewheeling. You just ease off the throttle for a moment, to lighten the drive train load, and then move the shift lever.

above is 100 mounted to a 8 inch ford

there were three basic models. The Model 100 was designed to fit onto the front of a Ford 8" differential housing, bolting in place of the front pinion bearing support. The Model 200 was designed to fit the Ford 9" differential. The Model 300 was a "universal fit" model to fit everything else. It is basically a separate unit that mounts in the driveshaft tunnel of the car and is coupled to the transmission yoke on one end and to a driveshaft on the other. This way the unit will fit all makes and models as well as manual or automatic transmissions. It is the Model 300 unit that was used optionally in the Baldwin Motion Chevolets and by many motor home companies it appears that the Model 300 was sold as a kit for many applications that included a rubber-bushed mounting bracket and shortened driveshaft