From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Performance graph comparing two Bentley Marston Mark V radiator matrices of varying depths (70mm & 58mm).
| Identifier | ExFiles\Box 155\1\ scan0168 | |
| Date | 24th October 1934 | |
| SHEET (1) BENTLEY RADIATORS COMPARISON OF BENTLEY RADIATOR MATRICES (MARSTON MARK V) OF VARYING DEPTHS. (70 MM & 58 MM) AIR TEMP TO BOIL °C CAR SPEED 30 MPH FULL THROTTLE 45 MPH FULL THROTTLE 60 MPH CRUISING 84 MPH FULL THROTTLE 70 MM MARSTON MARK V MATRIX 58 MM MARSTON MARK V MATRIX E.S.Steadman 24/10/34 | ||