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).
Figures taken from a worn gear pump tested with Castrol XL oil.
| Identifier | ExFiles\Box 179b\4\ img007 | |
| Date | 5th April 1933 | |
| ORIGINAL To Hdy.{William Hardy} From Ha/Rm.{William Robotham - Chief Engineer} C. Sg.{Arthur F. Sidgreaves - MD} Wor.{Arthur Wormald - General Works Manager} C. E.{Mr Elliott - Chief Engineer} Pa.{Mr Paterson} C. By.{R.W. Bailey - Chief Engineer} Ha/Rm.{William Robotham - Chief Engineer}2/XT.5.4.33. V 1310 With reference to your HUTS/M27.3.33. We attach figures we have taken off a gear pump which we consider to be badly worn. These figures were obtained with Castrol XL oil at 70°C, which we think will be as thin as anything we shall use in the gearbox. If you require anything else will you please let us know. Ha/Rm.{William Robotham - Chief Engineer} | ||