Information taken from the ERA club website
ERA R4D was a standard B type when it first appeared in 1935 and through 1936, although often fitted with a Zoller supercharger, instead of the standard Jamieson.
The car was unique in having, from 1936, its steering box reversed, with the linkage on the left hand side, to accommodate Raymond Mays’ childhood deformity.
In 1936/37 it was converted to C type specification and henceforth known as R4C, until 1938 when, with a new chassis frame, it became R4D.
R4C’s redundant chassis frame was later used for R8B’s conversion to C type specification.
Rear axle radius rods were fitted by Raymond Mays in the early post war years which remained on the car for many years.
The car was fitted with both 1500cc and two litre engines at various times up to 1949 but since then it has always had a two litre engine.
Photo's are the authors, shot in May 2024 at the Prescott Hill Climb course during the Historique meeting.
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