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).
Request for the weight of a Hispano Suiza car and data on the co-efficient of friction for different road surfaces.
| Identifier | ExFiles\Box 22\1\ Scan018 | |
| Date | 13th November 1923 | |
| X.4214 To Hs.{Lord Ernest Hives - Chair} from DA.{Bernard Day - Chassis Design} Dal/M13.11.23. RE. HISPANO SUIZA - X.4214. Referring to your report hls1/LG9.11.23., it would be useful to us if you could send us the weight of this car back and front as with the stop distances you have already given us we can do some work on pedal pressures etc. which will be useful to us. In connection with this we wonder whether you could obtain some co-efficient of friction figures on different types of road, for instance, ordinary tarred macadam, wood sets, and ordinary macadam, such as we have down here. Information also as to the way in which the co-efficient of friction varies with degrees of weight etc. would be useful. Da.{Bernard Day - Chassis Design} | ||