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).
Procedural document outlining modifications and instructions for Radiator Hex. ended Matrix Tubes for 40/50 HP and 20/25 HP models.
| Identifier | ExFiles\Box 105\1\ scan0158 | |
| Date | 9th September 1931 | |
| E.{Mr Elliott - Chief Engineer} Dept. [struck through] c.Hs{Lord Ernest Hives - Chair}/RM.{William Robotham - Chief Engineer} X5250 BY/SS{S. Smith}1/J.9.9.31. X7250 [handwritten] X5250 [handwritten] 40/50 HP. & 20/25 HP. Radiator Hex. ended Matrix Tubes. ------------------------------------------ The following procedure should be dealt with as assoon as possible. 1/- 40/50 H.P. E.82196 (6 3/4 to 8 m/m) should be marked "small" tube and the depth of indentations increased from .025" to .030". A print should be sent to the makers so that tools may be altered for future supplies. 2/- 40/50 H.P. E.82520 (7 3/4 to 9m/m) marked "large" tube should be issued for three experimental sets at once. The depth of indentations of this tube should be .040". 3/- 20/25 H.P. E.57006 (6 3/4 to 8 m/m) should be redrawn to 3.250" long with indentations .030" deep. It is intended not to order these at present. 4/- 20/25 H.P. A new drawing should be issued for the "large" tube (7 3/4 to 9 m/m) 3.250" long with indentations .040" deep and three experimental sets instructed. All these tubes will be in copper. BY/SS.{S. Smith} | ||