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).
Secret memo detailing modifications to the front brake drums and front equaliser lever.
| Identifier | ExFiles\Box 73\3\ scan0100 | |
| Date | 27th June 1924 | |
| BY.{R.W. Bailey - Chief Engineer} from HS.{Lord Ernest Hives - Chair} S E C R E T. [Handwritten: X9940 (crossed out)] Hs{Lord Ernest Hives - Chair}2/LG27.6.24. FRONT BRAKE DRUMS. [Handwritten: X9940 V9910 (both crossed out)] In order to reduce the tendency for jaggers, we find it necessary to reduce the thickness of the front brake drums from .150" to .160" in thickness. The section of the drum is reduced both on the outside dia. and down the sides except where it is dished, and bolted to the hub. We are finding that the servo out-put is coming out slightly higher than we anticipated from the original tests. It is therefore necessary to reduce the lever G.72003 on the front equaliser from 2.8 to 2.4. Hs.{Lord Ernest Hives - Chair} | ||