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).
Graph detailing power losses for a P.T. Synchromesh Gear Box.
| Identifier | ExFiles\Box 179b\2\ img192 | |
| Date | 3rd December 1932 guessed | |
| P.T. SYNCHROMESH GEAR BOX POWER LOSSES INPUT - H.P. SPEED - 1ST MOTION SHAFT - R.P.M. 3 SETS CONTINUOUS GEARS 2 SETS CONTINUOUS GEARS LOSS DUE TO HELICAL 2ND | ||