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).
Road test results for a Phantom III HS5 Gearbox after approximately 500 changes.
| Identifier | ExFiles\Box 94\1\ scan0338 | |
| Date | 19th February 1936 | |
| To RHC.{R. H. Coverley - Production Engineer} c. to RHC{R. H. Coverley - Production Engineer}/HPS.{Horace Percy Smith - Experimental Factory Mgr} c. to HS.{Lord Ernest Hives - Chair} 4328 Hs{Lord Ernest Hives - Chair}/GWH.{George W. Hancock - Head Chateauroux}2/KW.19.2.36. Phantom III HS{Lord Ernest Hives - Chair}5 Gearbox. This box has been tested on the road. Results after a day's run are as follows. Approx. 500 changes. Gears. 1st. Heavy, even note, over-run very heavy. 2nd. Light note, even, over-run heavy. 3rd. Light note, even, over-run light note. Continuous Gears. Quiet, dry ball race noise not passable. Synchromesh. 2nd Gear. Smooth action, free from crashing, gear obtained standing with no undue load. 3rd Gear. lumpy, action improved with use, occasional crash, not good enough. 4th - top. Poor action, crashing of gear frequent, cones not bedding. C.W. Oil. Hs{Lord Ernest Hives - Chair}/G.W.Hancock. | ||