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).
Weight difference between steel and aluminium brake straps.
| Identifier | ExFiles\Box 3\2\ 02-page069 | |
| Date | 10th June 1919 | |
| To Mr. from Mr. X.1427 Liaison EH2/LG18.6.19. 10th. June 1919. With reference to your request for the difference in weight of steel and aluminium brake straps. The present steel foot brake straps fitted with Ferodo weigh - 23 lbs. 10 ozs. aluminium brake straps weigh - 10 lbs. 15 ozs. EH. | ||