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).
Wear on the Delco distributor spindle for the Wraith model, suggesting an increase in clearance for the spherical collar.
| Identifier | ExFiles\Box 168\3\ img114 | |
| Date | 13th March 1939 | |
| Dr/Mr. [REDACTED] C.R. [REDACTED] C. Rm.{William Robotham - Chief Engineer} [REDACTED] Dr/Mr. [REDACTED] 61101 DA.{Bernard Day - Chassis Design}1/G.13.3.39. DELCO DISTRIBUTOR ON WRAITH. Referring to the wear on the distributor spindle, it appears certain from examination of the worn piece that this is due to the spherical collar on the oil retainer DW.711 being too close a fit. This causes the sleeve carrying the spring drive EW.1817 to obtain freedom in one direction by levering off this spherical collar to expand the driving springs, so forcing the distributor spindle against its bush. This is borne out by the wear on the spindle being only in this direction and non-existent at right angles to it. The spherical collar was only intended as an approximate location to prevent the driving sleeve getting too far out of place. We suggest that the present clearance of .001 to .003 should be increased to .010 to .013 by reducing the diameter of the spherical collar. CHILPS - See me. Rus, DA.{Bernard Day - Chassis Design} | ||