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).
Design of a single-plate clutch for the Spectre model to replace the existing two-plate clutch.
| Identifier | ExFiles\Box 93\3\ scan0008 | |
| Date | 27th July 1934 | |
| x4694 312 To BY.{R.W. Bailey - Chief Engineer} from Da.{Bernard Day - Chassis Design} c. for. E.{Mr Elliott - Chief Engineer} H.{Arthur M. Hanbury - Head Complaints} Hs.{Lord Ernest Hives - Chair} Hsy. RHO. Da.{Bernard Day - Chassis Design}2/HP.27.7.34. [Signature] R GRY{Shadwell Grylls} SpectreCodename for Phantom III - Single Plate Clutch. Herewith are N.Sch's 4144 and 4146 shewing the single plate clutch for SpectreCodename for Phantom III, designed to replace the two-plate clutch now being tested, should it appear desirable to do so for any reason. The single plate clutch does not work out badly, in respect to either pedal pressure, pressure per square inch on surfaces, or inertia, but we want the release movement to be as small as possible. Based on the Long clutch information, we are reckoning on .060, but can do with a little more than this without getting into trouble. We understand the best means of initial engagement is still underconsideration so we have shewn the spring back plate, but other means can be provided without difficulty. We have shewn both a steel and an aluminium cover plate. The central part of the clutch is unchanged from the two plate arrangement. Da.{Bernard Day - Chassis Design} | ||