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 comparing lost brake pedal movement for aluminium versus cast iron brake shoes during repeated applications.
| Identifier | ExFiles\Box 120\1\ scan0098 | |
| Date | 9th August 1932 guessed | |
| LOSS OF BRAKE CLEARANCE DUE TO HEATING UP OF BRAKE SHOES REAR BRAKES STD. ALUMINIUM BRAKE SHOES CAST IRON SHOES LOST PEDAL MOVT INS 1.5 1.25 1.00 .75 .5" .25 NO OF BRAKE APPLICATIONS AT INTERVALS REDUCING THE CAR SPEED FROM ABOUT 50 MPH TO 20 MPH 15 30 45 | ||