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).
Cancelling a previous instruction and updating the poundage setting for the Wraith spring drive damper.
| Identifier | ExFiles\Box 10\3\ 03-page125 | |
| Date | 6th April 1938 | |
| To By.{R.W. Bailey - Chief Engineer} from Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} c. By/CS. c. Rm{William Robotham - Chief Engineer}/Wym.{G. Harold Whyman - Experimental Manager} j 654. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}1/MH.{M. Huckerby}6.4.38. WRAITH SPRING DRIVE DAMPER POUNDAGE. Will you please cancel our previous memo on the above Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}4/MH.{M. Huckerby}31.3.38. The poundage mentioned 10 - 12 at 17½" rad. does on some cars make the half torsional period obvious, therefore we should like you to instruct [REDACTED] that the setting be 13 - 15 lbs. at 17½" rad., this can be obtained with the existing springs EW.1347. Therefore other than instruction that the poundage be 13 - 15 at 17½" rad. no other alteration is necessary. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||