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).
Record of retrogressive alterations to engine part pitches and slots.
| Identifier | ExFiles\Box 68\4\ scan0177 | |
| Date | 8th June 1928 guessed | |
| Handwritten Text: (10) 4) Retrogressive Pitches forward 7, coil 3 slots backward 9; com 4 slots. Step 1 to 4 Distribution List: Mr. BURGEX Mr. BRYLORD Mr. AUDIN Mr. DORMYSON Mr. ROACE Mr. JOHNSON Columns: Up 19 17 15 13 11 9 7 5 3 Down 8 6 4 2 20 18 16 14 12 10 Printed Form Text: Header: 'R.R' KESTREL ENGINE PARTS. 'H'-SET OF ALTERATIONS TO 'H.B.' R.R.' Kest (V H) (C'R' 1st J-T4) For DATE Ref. Part Drawing No. AA{D. Abbot-Anderson} Left Column Labels: Description of parts Origin Experimental Test Report Weight of Old part Weight of New part Difference per Engine Signature of Mr DeROOSE that above is correct Signature of Exbt' Dept' that above is correct SIGNATURES DATE Right Column Labels: Cost of Old Part Cost of New Part Difference per Engine as to cost of parts in Works and stores to be commenced if beqqabed it will follow. Storekeeper advised is above Storekeeper's signature REMARKS | ||