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).
Programme to address issues with an all-helical gearbox.
| Identifier | ExFiles\Box 136\2\ scan0114 | |
| Date | 19th June 1939 | |
| 1153. By.{R.W. Bailey - Chief Engineer} from Rm.{William Robotham - Chief Engineer} c. Da{Bernard Day - Chassis Design}/Hdy.{William Hardy} c. Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} Rm{William Robotham - Chief Engineer}4/R.19.6.39. GEARBOX PROGRAMME. A discussion was held between By.{R.W. Bailey - Chief Engineer} Hdy.{William Hardy} Gry.{Shadwell Grylls} Rm.{William Robotham - Chief Engineer} re all-helical box. It was decided to persist with this box. Chief troubles were - (1) Rattles. Starting and running. (2) Ineffective synchro for changing when in motion. (3) Baulking when getting into second from rest. It was decided to try the prop. shaft damper for (1), also variations on the clutch centre. Mods G.B. 5123. Insert G.B. 5124. Outer cone 2nd speed. G.B. 5126. 1st speed driver will be brought on 24 boxes if possible without scrap. Rm.{William Robotham - Chief Engineer} | ||