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).
Modifications required for the 40/50 rubber engine mounting.
| Identifier | ExFiles\Box 14\5\ Scan301 | |
| Date | 20th September 1934 | |
| +7005 To By.{R.W. Bailey - Chief Engineer} c. to Da.{Bernard Day - Chassis Design} c. to Roy{Sir Henry Royce}/Ms. Hs{Lord Ernest Hives - Chair}/Les.27/KW.20.9.34. 40/50 Rubber Engine Mounting. We understand that parts are being ordered for the rear mounting for the above. There are certain drawings which require modifications due to the experience we have recently gained on 20/25 rubber engine mounting. One of these is the rubber taking the weight at the rear, this requires bringing into line with the corresponding 25 HP., F.60517. Hs{Lord Ernest Hives - Chair}/Les.{Ivan A. Leslie} sheets to prevent further bulging, also production for a/c | ||