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).
Design progress and dependencies for the 20 HP chassis four-wheel brake system.
| Identifier | ExFiles\Box 5\3\ 03-page093 | |
| Date | 12th November 1924 | |
| (5940) c. Hs.{Lord Ernest Hives - Chair} 20 HP. CHASSIS. FRONT WHEEL BRAKES. So far as Derby are concerned, we have only got a small percentage of the necessary number of design drawings to cover the whole problem of the four wheel brake for the 20 HP. chassis. The axle we have already had; this is detailed and issued. We are waiting for the servo mechanism and all the equalising/operating gear for the system. and It is quite impossible for me to give any forecast as to when the four wheel brakes are likely to materialise on a car, even experimentally, until I have obtained the necessary drawings or information from West WitteringHenry Royce's home town giving dates as to when they will be able to supply them. I am taking this matter up with Da.{Bernard Day - Chassis Design} and will let you know something as soon as possible. It is necessary to remind you that we have thrown a lot more designing work on to West WitteringHenry Royce's home town in attempting to make arrangements by which either the 40/50 HP. engine or the EAC.II can be fitted to the present type chassis. To enable this to be done, certain alterations will have to be made - a/- To the present 40/50 HP. car before it is delivered, b/- To the EAC.II engine to make it suitable to take the place of the 40/50 engine later. This work is being considered of the utmost importance and therefore West WitteringHenry Royce's home town will not be able to give us any work on a 20 HP. Brakes until both the 40/50 and EAC.II problem has been entirely cleared up. BY.{R.W. Bailey - Chief Engineer} [Signature] | ||