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).
The revised front dumbiron for the Goshawk II.
| Identifier | WestWitteringFiles\H\November1921\ Scan65 | |
| Date | 22th November 1921 | |
| To DA{Bernard Day - Chassis Design} from E, Copy to CH. WCH. HS.{Lord Ernest Hives - Chair} RV WS ORIGINAL. FO NOV 22 1921 2 E2/G19/11/21. RE "GOSHAWK II" - REVISED FRONT DUMBIRON. X4260 We send you herewith drawing Lec.1487 shewing modified method of attaching the front dumb iron to the frame, using two short bolts and four rivets. To obtain a position for the bolts as near to the end as possible necessitates finishing the inside of the dumb iron stamping with a cutter of the size shewn on the drawing. It is doubtful whether this cutter is sufficiently practical, and we should like the opinion of the Tool Dept. on this point. E.{Mr Elliott - Chief Engineer} | ||