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).
Test results for new strong springs on two 'secret cars', suggesting a change to lessen vibrations.
| Identifier | ExFiles\Box 106\1\ scan0038 | |
| Date | 29th June 1925 | |
| To Hs.{Lord Ernest Hives - Chair} from BJ. √5410 BJ 7/H29.6.25. Re "INDIA". With reference to the two secret cars you brought down last week, to be tried by H.{Arthur M. Hanbury - Head Complaints}, CWB. and BJ., we found the new strong springs necessary for front wheel brakes were satisfactory, although one obtains considerably harsher vibrations over some kinds of roads than with the standard springs. We should prefer 20% stronger rather than 25% stronger, if you consider this would lessen the vibrations and at the same time be strong enough. B.J. | ||