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 showing power losses due to 1st and 2nd motion shafts for the 20/25 Synchromesh gearbox.
| Identifier | ExFiles\Box 178\4\ img076 | |
| Date | 7th May 1932 guessed | |
| 20/25 SYNCHROMESH POWER LOSSES DUE TO 1ST AND 2ND MOTION SHAFTS PI OIL AT 40°C H.P. R.P.M. OIL TEMP RISING COLD OIL OIL AT 40° C NO OIL 0 1 2 3 4 5 6 7 8 9 10 0 500 1000 1500 200 | ||