Justy + One-Legged Driver: Beats Excel! Beats Tercel!

Back in 1990, when you lined up for a drag race against the likes of the Toyota Tercel and Hyundai Excel, you needed something serious. Like f'rexample, a Subaru Justy, equipped with continuously variable tranny action! And if that hot tranny action ain't enough for you, sport, the orange-suited thugs from the Subie Mafia will tie you up and stuff you in the behind the wheel with but one leg and one arm free to operate the vehicle (and hang on, because the Justy did 30-to-50 in a stony 4.20 seconds). Look out, glacially-slow low-end subcompacts- the Justy wins the tortoise race!


Super Salty: 123 MPH Subaru Justy [internal]

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@ Smokescreen -

I don't know if the ECVT design was directly derived from the DAF Variomatic but the mechanism was similar. A belt of some description is fitted with pre-tension against two pairs of conical rollers. These are connected via linkages such that when one set of rollers moves away from the plane of symmetry the other moves toward it. Thus, the effective contact radius is changed simultaneously at both ends, yielding maximum change in the transmission ratio.

A more modern alternative is the cone ring transmission. There is no need to run a heavy, fuel-guzzling hydraulic system at all times. Gear ratio changes are powered by natural precession motion, all you need is a 20W electric motor to adjust the geometry to control the rate of change. NVH is superior because torque is transmitted via a traction oil, there is no metallic contact. There is also no polygon effect, as with a push-belt (vanDoorne) or chain (Audi multitronic).


Nice 140MB animation here: