Bar chart illustrating the gain or loss in lap speed (M.P.H.) for the 10 E.X. model under various configurations.
| Identifier | ExFiles\Box 69\4\ scan0191 | |
| 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 GAIN LOSS C.O. CLOSED: LOSS 3.25 HOOD UP: LOSS 1.50 PLAIN BONNET: LOSS 1.00 UNDERSHIELD OFF: LOSS .50 TAIL OFF: LOSS .94 BALLOON TYRES: LOSS .82 FRONT WINGS OFF: GAIN 1.00 EFFECT OF VARIOUS CONDITIONS ON THE SPEED OF 10 E.X. STAMP: ROLLS-ROYCE, LIMITED PRINT ROOM 7 SEP 1927 | ||
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).