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).
Graph of acoustic noise meter readings comparing a Bentley 16.B.IV and a Terraplane Six at various speeds.
Identifier | ExFiles\Box 138\1\ scan0111 | |
Date | 25th June 1934 | |
ACOUSTIC NOISE METER READINGS. HR 9L DECIBELS 80 70 60 50 40 30 BENTLEY 16.B.IV TERRAPLANE SIX SPEED IN TOP GEAR M.P.H. 0 10 20 30 40 50 60 GRINDING SHOP CAR ERECTING BAY PNEUMATIC HOSE CHASSIS DESIGN OFFICE E's & H's OFFICES HY{Tom Haldenby - Plant Engineer}'s OFFICE. WAITING ROOM. COUNTRY ROAD. ELLS 25-VI-34 | ||