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).
Increasing the length of a bolthead and investigating frame stiffening for Ss and 20HP models.
| Identifier | ExFiles\Box 13\5\ Spare05-page068 | |
| Date | 24th June 1929 guessed | |
| (4) We agree to increase the length of the bolthead to provide more surface, and suggest from 1" to 1.5". This has the additional advantage of bringing the load opposite the inclined sides of the slot. This should be done on both Ss.{S. Smith} and 20HP. If you could fix up a 20HP. carrier quickly on these lines, it would enable us to decide whether any stiffening to the frame is needed. This latter point does not seem to have been as yet investigated. DA.{Bernard Day - Chassis Design} | ||