Instructions for fitting a 2.B scheme starter motor to a 9-EX chassis, detailing required parts and modifications.
| Identifier | ExFiles\Box 64\2\ scan0135 | |
| Date | 31th December 1927 | |
| X9625B C. EFC. {E. Fowler Clarke - Electrical Engineer} BY {R.W. Bailey - Chief Engineer} /RD1/ML31.12.27. 2B/ scheme to 9EX L&C.2425 - STARTER MOTOR (2.B SCHEME) 9-EX. We recently issued to you instructions to enable the 2.B. scheme of starter motor to be fitted to 14-EX, but as this chassis was sent away with the 2.A scheme it is now proposed to utilise the 2.B. motor which you have made by fitting it on to 9-EX (E.A.C.1) This move will necessitate a new armature, commutator, bearing brackets, gear ring and pinion being made and we send herewith the particulars of the motor indicating the new parts that will be required:- Armature - 1 off complete to LOP. D.71516 - blueprints - D.71449-Distance Piece. D.71515 - Pinion. D.71516 - Armature Assembly. D.71460 - Shaft. Bearing Brackets - to L.O.P. D.71517 - the only new parts required are - Rotherham Spg.Lid {A. J. Lidsey} Oil Cup-1 off. D.71468-Bearing Brkt:PE.-1 " D.71469-Bolt. -3 " E.19614 - Plug. -1 " The remaining parts you will have already made for 14-EX. Commutator - 1 off to L.O.P. D.71444. Frame & Field - L.O.P. D.71391. - This section will already have been made for 14-EX and should be used complete. The gear ring for 9-EX which is to replace the one already on is G.76442, blueprint herewith, and this has 5° helical teeth with sharp edges on the engaging corners. The parts made for 14-EX and not required for 9-EX should be kept together in case we may wish to fit this on to 14-EX at some other date. This will involve a slight alteration to the undersheet, particulars of which we will let you have. Will you please put this in hand. BY {R.W. Bailey - Chief Engineer} /RD. | ||
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).