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).
Dynamometer test report on a 25 HP Synchro Mesh Gearbox.
| Identifier | Morton\M13.2\ img112 | |
| Date | 3rd October 1931 | |
| ORIGINAL. To R.{Sir Henry Royce} From Ha/Gry.{Shadwell Grylls} c. to Sg.{Arthur F. Sidgreaves - MD} Wor.{Arthur Wormald - General Works Manager} c. to E.{Mr Elliott - Chief Engineer} Da.{Bernard Day - Chassis Design} c. to By.{R.W. Bailey - Chief Engineer} Ha/Gry.{Shadwell Grylls}1/MJ.3.10.31. 25 HP. SYNCHRO MESH GEARBOX. Y8310. We have carried out a dynamometer test on this gearbox fitted to 12-C4. Half an hour's running was done at full throttle on each gear with quarter hour intervals between each test to allow the gearbox to cool. Second, third, and top gears were run at 1500 R.P.M. and first gear at 2000 R.P.M. in this order. At the beginning of the first run a small amount of oil came out of the breather hole in the selector shaft housing, but this did not happen again. On none of the tests was there any tendency for the gears to come out of mesh nor at any time did the gearbox get unduly hot. Hs{Lord Ernest Hives - Chair}/H.Grylls. | ||