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).
Request to The Light Production Co. Ltd. for 14 modified Aerolite pistons with a .440 raised crown for further experimentation.
| Identifier | ExFiles\Box 148\1\ scan0010 | |
| Date | 25th November 1938 | |
| 1256 EXPERIMENTAL DEPARTMENT. Rm{William Robotham - Chief Engineer}/CTC./JH. 25th. November, 1938. The Light Production Co.Ltd., 60/66 Rochester Row, LONDON. For the attention of Mr. Brooks. Dear Sirs, Further to our experiments with the raised crown on your Aerolite pistons, the modifications for which is shown on our drawing Rm.{William Robotham - Chief Engineer}522. We have now tried two stages on this crown alteration, one has the portion of the crown raised .170 and the other .300, actually you have pistons in hand for us of both dimensions. We would now like to go a stage further with this modification. This time the depth of the raised portion is .440. Will you therefore supply - 14 pistons to Rm.{William Robotham - Chief Engineer}522, raised crown .440. We would be obliged if you could supply these pistons as soon as possible, so that we can complete this experiment. Please let us know by return the best you can do re delivery. Yours faithfully, FOR ROLLS-ROYCE LTD. | ||