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M.I.R.A. DEVELOP NEW TRANSMISSION

4th October 1957, Page 38
4th October 1957
Page 38
Page 38, 4th October 1957 — M.I.R.A. DEVELOP NEW TRANSMISSION
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ANEW experimental high-efficiency hydraulic transmission will be • exhibited by the Motor Industry Research Association at the Motor Show, which opens at Earls Court on October 16. The transmission consists of a positive-displacement torque converter, using epicyclic gearing in a differential or " shunt-type " transmission.

In this way the mechanical gearing always transmits the greater part of the total power, and the hydraulic drive is merely a " by-pass " used to control the gearing, thus absorbing only a small percentage of the power. The unit to be shown has been used with engines of up to 50 b.h.p.