Are single-regime CVTs the way forward?

Step-less automatic transmissions continue to fascinate the automotive industry.

Torotrak pioneers traction fluid R&D rig

A company developing traction drive infinitely variable transmissions (IVT) has developed what it claims is the world’s only traction fluid testing rig.

Even the most innovative traction drive transmission for passenger car and commercial road vehicle application is effectively useless – a laboratory toy – without a “perfect” traction fluid to ensure top-class performance and long-term durability.

Forbes Perry - Obituary

We are grateful to Alan Perry, one of Forbes Perry’s sons, for kindly providing this obituary. John Mortimer’s close association with the inventor of the Perbury infinitely variable transmission began when Mortimer was editor of The Engineer in the 1960s.