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).
Drawing of a fan with dimensions for a 3 1/2 Litre S.S. vehicle.
| Identifier | ExFiles\Box 126\5\ scan0148 | |
| Date | 8th March 1938 guessed | |
| 3 1/2 LITRE S.S. FAN. OUTSIDE DIA OF FAN = 13.900 SS{S. Smith}34. 3 RIVETS MUSHROOM HEAD ALUM BLADES 15 SWG (.072) 4 HOLES .275 DIA 12 SWG (.104) 52° 92° 5.500 2 1/8 DIA 2.750 CTS{C. Trot Salt - Carburation} .250R 3.000 1.450 .500R 4.750R 4.000 2.312 3.750 | ||