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).
Blueprint for a modification to a connecting rod (Con-Rod).
| Identifier | ExFiles\Box 86\1\ scan0107 | |
| Date | 24th September 1921 | |
| B.V.51 2.700 CTRS. OFF SIDE OF ENGINE 1 HOLE DRILL .031 DIA. NEAR SIDE OF ENGINE ALL OTHER DIMENSIONS SEE E.B.1603/4 SCALE 1/1 MODIFICATION TO E.B.1603/4 CON-ROD R.Allen 24-9-21 | ||