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).
Correct Durometer hardness for rubbers in the Spectre gearbox, requesting an update to Drawing G.56304.
| Identifier | ExFiles\Box 94\1\ scan0086 | |
| Date | 17th January 1935 | |
| x 328 To By.{R.W. Bailey - Chief Engineer} c. to RHC.{R. H. Coverley - Production Engineer} Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls}18/KW.17.1.35. Re Gearbox for SpectreCodename for Phantom III. The rubbers that have come in for this purpose seem to be too soft. We think that a Durometer hardness of 55 to 60 would be about correct. Will you therefore please state this figure on the Drawing G.56304 so that we can get in a further supply for future chassis. Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls} | ||