Chart showing the effect of various aerodynamic and equipment configurations on the lap speed of the 10 E.X. model.
| Identifier | ExFiles\Box 70\1\ scan0114 | |
| Date | 7th September 1927 | |
| STANDARD CONDITION. HOOD DOWN. C.O. OPEN TAIL UNDERSHIELD AND WINGS ON H.P. TYRES AND LOUVRED BONNET. GAIN OR LOSS IN LAP SPEED M.P.H. OVER STANDARD CONDITION. CHART DATA: CONDITION, GAIN, LOSS C.O. CLOSED, , 3.25 HOOD UP, , 1.50 PLAIN BONNET, , 1.00 UNDERSHIELD OFF, , .50 TAIL OFF, , .94 BALLOON TYRES, , .82 FRONT WINGS OFF, 1.00, EFFECT OF VARIOUS CONDITIONS ON THE SPEED OF 10 E.X. STAMP: ROLLS-ROYCE, LIMITED PRINT ROOM, 7 SEP 1927 DERBY. | ||
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).