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 tyre performance data, specifically m.p.h. at 1000 r.p.m. for various tyre and wheel combinations.
| Identifier | ExFiles\Box 45\2\ Scan043 | |
| Date | 11th November 1927 | |
| X. 4050 Hs.{Lord Ernest Hives - Chair} from DA.{Bernard Day - Chassis Design} DAL/M23.11.27. [Handwritten] X5810 (crossed out) X4565 We have had various information regarding the running radius of high pressure and balloon tyres, but R.{Sir Henry Royce} would like you to supply this information in the form of m.p.h. at 1000 r.p.m. for both cars. This information we particularly want in reference to the std. balloon tyres for both cars. If possible for the 20 HP. we should also like information for 19" wheels. DA{Bernard Day - Chassis Design}+ | ||