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).
Reduction ratios for Hypoid bevel gears for various models including the Japan III, 20/25 HP, and Phantom 11.
| Identifier | ExFiles\Box 102\4\ scan0081 | |
| Date | 27th October 1931 | |
| X.5350. X.7350. XS350 Hs.{Lord Ernest Hives - Chair} --------- BY/Cgh.{W Clough}7/G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 27.10.31. We have prepared detail drawings for 9/41. 10/41 and 11/41 Hypoid bevel gears for the above, but we are only ordering the 10/41 ratio at present. For your information we give below the reduction ratio of the above, also those of our present standard 20/25 and Phantom 11. JAPAN 111. 20/25 HP. PHANTOM 11. ---------- --------- ------------ 9/41 = 4.55 11/50 = 4.55 - 10/41 = 4.1 - 11/41 = 3.72 11/41 = 3.72 BY/Cgh.{W Clough} | ||