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).
The prevalent failure of the Phantom II Hardy Fabric Coupling and a suggestion for a design modification to ease replacement.
| Identifier | ExFiles\Box 5\5\ 05-page51 | |
| Date | 20th September 1932 | |
| X312 Da.{Bernard Day - Chassis Design} from Hs{Lord Ernest Hives - Chair}/GWH.{George W. Hancock - Head Chateauroux} c. E.{Mr Elliott - Chief Engineer} By.{R.W. Bailey - Chief Engineer} Hs{Lord Ernest Hives - Chair}/GWH.{George W. Hancock - Head Chateauroux}9/HT.20.9.32. PHANTOM II. HARDY FABRIC COUPLING BETWEEN ENGINE & GEARBOX. X7305 The failure of these couplings are again becoming prevalent with the increased HP. and higher speeds. It has been brought to our notice by the Cricklewood Depot that four of our latest Phantoms, fitted with the latest Hardy Fabric Coupling, have failedafter 14,000, 11000, 22000, and 21,000 miles respectively. The owners of these cars are fast drivers. To replace these couplings is an expensive item, which the owners object to paying. The high cost is due to the gearbox having to be dismantled to obtain access to the coupling. We suggest that during the alterations to the gearbox for the silent second gear, modifications be made so that the Fabric Coupling could be made a larger dia., and could be dismantled without having to dismantle the gearbox. Hs{Lord Ernest Hives - Chair}/G.W.H. | ||