Drawing of a 15 HP front brake drum made from aluminium with a steel liner.
| Identifier | ExFiles\Box 22\1\ Scan098 | |
| Date | 1st February 1924 guessed | |
| 15 H.P. FRONT BRAKE DRUM, MATERIAL ALUMINIUM WITH STEEL LINER., .060, .210, .30, 10 mm STUDS, 4.925 DIAM, 8 HOLES, 2.50, .320, .180, 15.75 DIAM, STEEL LINER, WEIGHT = 16 lbs 9.oz | ||
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).