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).
Comparative analysis of windscreen dither at various speeds for two different vehicle configurations.
| Identifier | ExFiles\Box 117\1\ scan0257 | |
| Date | 1st October 1938 | |
| WINDSCREEN DITHER 29 - 9 - 6 AGAINST THE WIND WITH THE WIND M.P.H. 70 60 50 40 30 PASSENGERS SIDE WINDING HANDLE OFF SET .1563" 30 M.P.H. .1719" 40 M.P.H. .2188" 50 M.P.H. .250" 60 M.P.H. .3125" 70 M.P.H. SIDEWAYS MOVEMENT SCREEN SIZE 48" 15" 17.5" DRIVERS SIDE MOVEMENT SCALE 1/1 WINDSCREEN DITHER FORD V 8. 22 H.P M.P.H. 70 60 50 40 30 WINDING HANDLE. MAX. SIDEWAYS MOVEMENT AT 70 M.P.H. .1" MOVEMENT SCALE 1/1 SCREEN SIZE 44" 14 1/4" F.D. 1 - 10 - 38 | ||