The Variomatic should offer a relatively low cost alternative to the automatic gearbox for smallervehicles and/or engines with low torque. In the DAF. 20 Dec In the Variomatic Drive transmission, the driveshaft drives a transverse countershaft (1) with two vee pulleys (2) attached to it. The power is then. Buy low price, high quality variomatic transmission with worldwide shipping on

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How it Works: The Variomatic Transmission

The variomatic drive transmission is very much like the trwnsmission in some of the snowmobiles that I used to drive many years ago in Canada, except that on those snowmobiles a cable leading to the handlebar controlled the pulley movement which effectively controlled the speed of the machine. The trasmission-ratio increases again. I need a fiat coupe horn push or horn button.

Here it is distributed, without much gear-ratio, through conical gearwheels, to the right- and to the left belt-drives. This vaiomatic is pulled when braking is anticipated, e. The version that contains the switch from rubber to steel belts was called the Transmatic. When suddenly accelerated, then through the altered inlet manifold vacuum, the front discs move apart- and the rear discs towards each other.

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Articles with hAudio microformats All articles with unsourced variomativ Articles with unsourced statements from March Articles with unsourced statements from August If this was to be done to the best advantage, it demanded electronically-operated controls.

Later cars, the 46, 66 and Volvo variants were fitted with a differentially geared axle.


Variomatic – Wikipedia

The rolling diameter is then bigger there. At low speeds the output is very less. Richard on The Pontiac Tempest: Since the CVT system selects the best ratio to suit the operating conditions, the engine is not required to be accelerated through each gear before the vehicle reaches its operating speed.

Problems playing this file? Derailleur gears Hub gears. As a result of change in the distance of the conical drums in both pulleys, the diameters and so also the reduction ratio changes continuously. Manumatic Semi-automatic Electrohydraulic Dual-clutch. To achieve this, a strong spring is used to push the two havles of the secondary pulley together.

This lever shifts the axle drive shaft coming from the engine in the front distributor casing, thus causing a second conical gearwheel to mesh, which reverses the rotation direction back up to the maximum speed. Retrieved from ” https: Thus, these very cheap and simple cars were the ‘formula one’ in this competition.

Variomatic Transmission | How It Works

The attainment of the constant engine speed required to achieve any one of the three performance factors is not possible with a conventional gearbox, because the engine speed is required to be continually changed to match the vehicle speed. The engine could then be matched to the speed of the car so that it was giving the best varilmatic performance or, alternatively, the best possible fuel economy, all of the time.

The more straight sections the track has, the higher the chances were for the Variomatic, which can travel as fast in reverse- as in forward gear. This changes when one accelerates more strongly.


The transmission provided an tramsmission infinite range of ratios by automatically varying the operative diameter of the pulleys. Email required Address never made public. No clutch, and only one lever for driving forwards and reversing. When the car was pulling away from rest the engine’s torque needed to be considerably multiplied – in other words the engine had to turn faster than the car’s wheels.

We are looking at the variiomatic axle-drive from the front see figure 1.

Low speed handling in icy conditions was interesting as the system tended to drive the car forward against the influence of the steered wheels. For better vehicle performance, the engine must run at higher speed at which it develops its maximum power. To obtain the best possible acceleration from a standing start or when overtaking, the engine needs to be kept at its peak torque speed; for greatest economy to be obtained it needs to be kept at the speed at which its fuel consumption is best for that particular throttle opening.

One clutch connects the sun wheel and planet carrier together to give forward, and the other locks the annulus to the transmission casing to provide reverse. Rather than the pulled rubber drive belts as originally used by DAF, the modern transmission is made much more durable by the use of steel link belts that are pushed by their pulleys.