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).
Road test report from the Ashbourne to Derby Road, showing vibration traces under different test conditions and speeds.
| Identifier | ExFiles\Box 117\3\ scan0035 | |
| Date | 6th May 1940 guessed | |
| 6 ROAD TEST. ASHBOURNE - DERBY - ROAD. 10 - B - 5 CONDITION OF TEST. 22 REPEAT OF TEST 21 WITH BRACKETS FROM FRAME TO BODY SIDES REMOVED. 60 M.P.H. 23 FINAL SET UP WITH ROLL-BAR REMOVED. STRENGTHENED SCUTTLE SCHEME OF TUBULAR STAYS & ANGLE BRACKETS TO THE FRAME STABILISER FITTED. 60 M.P.H. 24 FINAL SET UP TO SHOW IMPROVEMENT WHICH TAKES PLACE AS SPEED INCREASES TO 80 M.P.H. 80 M.P.H. 25 4 23 THIS IS A COMPARISON TO MARK THE PROGRESS FROM START TO FINISH IN THE ROAD TESTS. 60 M.P.H. | ||