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 showing the relative movement of the lever and cams for the Spectre front brakes under different adjustments.
| Identifier | ExFiles\Box 92\4\ scan0067 | |
| Date | 19th February 1935 | |
| SPECTRECodename for Phantom III FRONT BRAKES RELATIVE MOVEMENT OF LEVER & CAMS WITH & WITHOUT LOAD HORIZONTAL DISTANCE BETWEEN EITHER CURVE & STRAIGHT LINE IS LOST MOVEMENT OF SHOES MOVEMENT OF ACTUATING LEVER - THOUSANDTHS OF AN INCH. INCREASE OF DISTANCE BETWEEN SHOES - THOUSANDTHS OF AN INCH AT A RADIUS OF 12.5" FROM PIVOT ORIGINAL ADJUSTMENT LATER TYPE NO SPONGE LINE FEBRUARY 19TH 1935 | ||