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).
Modifications to the Phantom III Oil Pump Driving Shaft Assembly, specifically concerning knurled press fit assemblies.
| Identifier | ExFiles\Box 149\2\ scan0127 | |
| Date | 23th September 1936 | |
| Swell X1265 Sft.{Mr Swift} c. Hy.{Tom Haldenby - Plant Engineer} Hs.{Lord Ernest Hives - Chair} By.{R.W. Bailey - Chief Engineer} Mx.{John H Maddocks - Chief Proving Officer} E.1/HP.23.9.36. Phantom III Oil Pump Driving Shaft Assembly. The modification to the oil pump driving shaft raises the question of whether we should use these knurled press fit assemblies anywhere at all. Based on the experiments made up to date we had rather freely incorporated these in the shock damper and roll rod mechanism of Wraith, as shewn on LeC.5123, of which you have a print. I should, therefore, be glad to have your views on this point as we shall want to alter the Wraith designs immediately if this is considered necessary. It also appears from the favoured design shewn on WKS.00.A. that a press fit on serrations is considered practicable. We have rather held off this up till now because we had the impression it demanded working to very close limits. A further point that appears evident is that it is cheaper to cut a blind serration on the Fellows than make a coupling in two pieces to enable the broach to be used. Finally in comparing the prices of the two drives mentioned in BY.11/G.17.8.36, there appears to be no assembly charge included in the two shillings cost figure for the scheme "B" arrangement, whereas assembly is included in the standardfigure. E.{Mr Elliott - Chief Engineer} | ||