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).
Introduction of a sub-frame and detailing production schedules for various chassis series.
| Identifier | ExFiles\Box 69\3\ scan0249 | |
| Date | 1st June 1925 | |
| -2- test. Material for alterations should not be ordered until the 10,000 miles test is successfully completed. Thirdly, Mr. Royce is anxious to introduce as soon as possible the sub-frame. He does not necessarily confirm the opinion which has been formed that the sub-frame would reduce booming, but he does consider that the introduction of the sub-frame would be a great improvement so far as carriage-building is concerned. CJ. expressed the opinion that material for the sub-frame should not be ordered until a complete car fitted with sub-frame has been successfully run for 10,000 miles in France. It is understood that as regards the output programme it may be necessary to limit the X Series to 100 Chassis Series | No. of Chassis in Series. | Chassis per week. | Date for ordering first batch of material. | Delivery to customer of 1st chassis of series as a complete car. | Delivery to customer of last chassis of series as a complete car. --- | --- | --- | --- | --- | --- V | 300 | -- | -- | -- | 24 Oct. 1925 Chassis Xmas 1925 Complete Car. W | 200 | 10 | -- | -- | 9 Feb. 1926 Chassis 9 Apr. 1926 Complete Car. X | 100 | 10 | 13 July 1925 | 10 Feb. 1926 Chassis 10 Apr. 1926 Complete Car. | 21 Apr. Chassis 21 June Complete Car. Y | 200 | -- | 22 Sept. 1925. | 22 Apr. 1926. 22 June 1926. | It will be noticed that the first batch of material for Series X must be ordered on the 13th of July, - that is to say, 6 weeks hence. Novelties or improvements which have not passed their 10,000 miles test by that date will have a further 2 months in which to complete their trials in order to be included in the Y Series. CJ. | ||