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).
Potential sound effect of Michelin wheels on the back axle and proposing further tests.
| Identifier | WestWitteringFiles\D\January1920\ Scan14 | |
| Date | 23th January 1930 | |
| To HS.{Lord Ernest Hives - Chair} from R.{Sir Henry Royce} Copy to C.I. (struck through) BN.{W.O. Bentley / Mr Barrington} X.3482 Ref CJH/D23-1-30 ORIGINAL R3/G28/1/20 3 RE MICHELIN WHEELS. Since you have got the impression that Michelin wheels may have some effect on the sound produced by the back axle, I should certainly fit some to another axle, both of the ordinary type and the Gleason curved bevel. It is just possible that they may act in some way as sound collects, but I should have thought that the chance would be remote. I should not take the outside report seriously, as people do get such fearfully inaccurate opinions about so many things. R.{Sir Henry Royce} | ||