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 place an official order for two different types of piston sets from Light Production Co. Ltd.
| Identifier | ExFiles\Box 87\2\ scan0169 | |
| Date | 7th April 1936 | |
| To Roy.{Sir Henry Royce} x23b Hs{Lord Ernest Hives - Chair}/Mths.{Reg Matthews}19/KW.7.4.36. Will you please send an official order to the Light Production Co.Ltd., for the following :- 3 sets of Pistons having heat break sawcut in the scraper ring groove, but retaining normal skirt clearances; i.e., dia. at top of skirt 3.247", at bottom of skirt 3.2475", and with extra strength in the crown. If necessary, weight may be increased from 18 1/4 ozs. to 20 ozs. to allow for extra material in the crown. To be fitted with rings suitable for bores .003" oversize. and 3 sets of Pistons, as previously supplied, with heat break sawcut in the scraper ring groove, suitable for standard 3 1/2" bores. These have been ordered in our letter ref. Hs{Lord Ernest Hives - Chair}/Mths.{Reg Matthews}15/KW.7.4.36. Hs{Lord Ernest Hives - Chair}/Mths.{Reg Matthews} | ||