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 showing the oil grooves in a dynamo drive bush for a super sports engine.
| Identifier | ExFiles\Box 62\3\ scan0006 | |
| Date | 12th November 1928 | |
| V404 FOR ALL OTHER DIMENSIONS SEE E77346. .312 +.5 .125 +.20 1.130 +.5 DIA. .075 +.20 1.050 CTR ±10 SPIRAL GROOVE (R.H.), .040 WIDE x .015 DEEP, ONE COMPLETE TURN. OIL GROOVES IN DYNAMO DRIVE BUSH. (SUPER SPORTS ENGINE). ROYCE, LIMITED PRINT ROOM, 12 NOV 1928 DERBY. | ||