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).
Departmental memo requesting a new valve spring design and the handwritten response explaining why it's not possible.
| Identifier | ExFiles\Box 80\3\ scan0079 | |
| Date | 17th November 1911 | |
| R.R. 348a (100 H) (W 387. 4.4.11). E.P. 8817. DEPARTMENTAL MEMO. TBB/L4171111 REF 77(5) Issued Nov.17th 1911 This column is for Name of Person addressed. DATE. Re Valve Spring. Mr. Swetnam 17-11-11 Will you please get out a valve spring having 10 1/4 turns, the diameter and size of wire to be the same as standard. This spring will have 1 1/2 turns more than the special spring you recently designed. The load of the spring in its normal position should be standard. For T.C. T B Barington [Handwritten on left] T.C. 17-11-11 [Handwritten reply] It is impossible to add 1 1/2 turns to the special spring I ordered, & still have 10 1/2 turns in opg. Special spring had 10 1/2 turns. CRS This sheet must be filed with the correspondence to which it refers. | ||