Hondamatic

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H2
ManufacturerHonda
Production1976–1979
SuccessorH3
Class2-speed transverse automatic transmission
Transmission types
Manual

Non-synchronous
Automatic

Semi-automatic

Continuously variable
Bicycle gearing
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See also list of Honda transmissions for other Hondamatics

The Hondamatic (also called the H2) was Honda's first automatic transmission. It was produced from 1973 through 1979. The Hondamatic name is used on all automatic transmissions from Honda.

The original Hondamatic, like all following Honda automatics, featured sliding gears on parallel axes rather than planetary gears like most other automatic transmissions. The design is noteworthy because it preserves engine braking by eliminating a sprag between first and second gears. It also featured a unique shifting action controlled by stator torque rather than traditional hydraulics. The Honda torque converter had a lockup, leading the company to sell the original Hondamatic (which had just two forward gear ratios) as a 3-speed. The true 3-speed H3 was launched in 1979.

Applications:

Motorcycle

The Hondamatic was later used in Honda's 400, 450 and 750 cc motorcycles, including the CB750A. In this application, it is not a true automatic transmission. The rider must manually select one of the two gears, though Honda's torque converter means that no clutching is needed.

Applications:

Scooter, ATV, and power equipment

Honda also applies the Hondamatic name to a hydraulic piston-based continuously variable transmission used in motorscooters, all-terrain vehicles, and other types of power equipment.

See also