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 'Eagle' Electrical Starter in response to objections from Messrs. Lucas regarding a ball bearing position.
| Identifier | ExFiles\Box 37\2\ scan 050 | |
| Date | 31th October 1918 | |
| To EX from E.{Mr Elliott - Chief Engineer} c. to Da.{Bernard Day - Chassis Design} c. to EH. c. to EFC. 31st October. 1918. E3/G.311018. X.3328 RE "EAGLE" ELECTRICAL STARTER In reply to your memo giving us information of Messrs. Lucas' objections to the proposed ball bearing position, we send you herewith drawings No. LeC.1020, shewing the epicyclic reduction modified to accomodate the ball bearing position desired by Messrs. Lucas. The following is a copy of the various notes on the drawing:- "Add an oil hole marked "OIL" in a suitable place on motor gearcase. The latter must only go on in the one correct position for the oil holes, and this should be ensured by making one of the studs with a stem thus [drawing of a stepped stud] larger in diameter than the others". "We want you to note that we propose to use the Lucas motor unaltered except for the shaft. The ball bearing is in the position shewn on Lucas drg. L.487/A.{Mr Adams} and the short stubby spigot on the carcase of the motor is retained as also the stud holes, to Messrs. Lucas' dimensions." "The perspective sketch above illustrates the condition in which the driving flange should be left finished by the various machinecuts which are made to form the projections on its face. The policy is not to attempt to make the various cuts on the face of the flange match but to make them definately different one from the other by small amounts. This will give a clean job." "During the truning operations an annular boss should be formed on the piece just large enough in section to containe the planet pinion pins with machining allowance. Three straight through milling cuts of this order will then produce Contd:P | ||