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).
Fault where the Phantom III gearbox jumps out of third gear and a proposed solution.
| Identifier | ExFiles\Box 94\2\ scan0048 | |
| Date | 27th October 1936 | |
| 328 To Hs.{Lord Ernest Hives - Chair} From Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} c. to E.{Mr Elliott - Chief Engineer} c. to Dd. c. to Ey. c. to Hiy. Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls}5/MJ.27.10.36. PHANTOM III GEARBOX. We understand from the Test Dept. that 60% of the cars leaving the factory will jump out of third gear if overrun down a long hill. We have overcome this trouble on three cars in this Dept. by fitting the "Concertina" driving piece to R.Sch.4896. We recommend that twelve of these are put through on production gearboxes so as to obtain more information as to whether they are a reliable cure. One of these pieces has done four hours on dynamometer and considerable hill climbing. hm{Capt. W. Hallam - Head Repairs}/H.Grylls. | ||