| Description | Date | Identifier | |
| Efficiency of a Lucas starter motor and arranging a meeting regarding battery ignition. | 25th Feb 1918 | Box 61b \ 3 scan0034 | |
| The general self starter for the chassis. | 21th Mar 1918 | Box 61b \ 3 scan0035 | |
| Summary of particulars, windings, and brake efficiency test results for various self-starter motors. | 8th Apr 1918 | Box 61b \ 3 scan0036 | |
| Motor winding configurations and a brake test on a starter motor. | 8th Apr 1918 | Box 61b \ 3 scan0037 | |
| Comparison of brake efficiency test results for various motor models. | 14th Oct 1920 | Box 61b \ 3 scan0038 | |
| Testing methodology and comparison of self-starting motors. | 17th Apr 1918 | Box 61b \ 3 scan0039 | |
| Comparison of two electric starter motors, focusing on their efficiency, power, and design characteristics. | 19th Mar 1917 | Box 61b \ 3 scan0040 | |
| Continued discussion on starter motor design, testing, and application for cars and aero engines. | 14th Nov 1918 | Box 61b \ 3 scan0041 | |
| Broken starter motor shaft and the conditions leading to its failure. | 14th Nov 1918 | Box 61b \ 3 scan0042 | |
| The rationale for bolting a friction clutch solid due to slipping issues. | 14th Nov 1918 | Box 61b \ 3 scan0043 | |
| Notes from a meeting with Mr. Royce regarding instructions for retrofitting starter motors to existing cars. | 16th Dec 1918 | Box 61b \ 3 scan0044 | |
| Notes from a visit to Mr. Royce regarding the starter motor, air pump, and speedometer drive. | 16th Dec 1918 | Box 61b \ 3 scan0045 | |
| Specification of alterations to the 40/50 HP chassis and the assignment of the associated draughting work. | 8th Jan 1919 | Box 61b \ 3 scan0046 | |
| Index of alterations and experimental work for the 40-50 HP present type chassis. | 18th Dec 1918 | Box 61b \ 3 scan0047 | |
| Positioning of the electric starter, wiring schemes, and instrument board design. | 18th Dec 1918 | Box 61b \ 3 scan0048 | |
| From Mr. Royce suggesting designs for a distributing board and an alternative switch box for vehicle electrics. | 18th Dec 1918 | Box 61b \ 3 scan0049 | |
| Design and standardisation of a pressed sheet metal electrical terminal, with sketches. | 18th Dec 1918 | Box 61b \ 3 scan0050 | |
| Recommending the fitting of a priming device to solve a customer's car starting difficulties. | 4th Feb 1919 | Box 61b \ 3 scan0051 | |
| Letter detailing particulars of various starter motors, with a focus on brush types and performance. | 3rd Apr 1919 | Box 61b \ 3 scan0052 | |
| Summary table of particulars for armature and field windings of various starter motors. | 26th Apr 1917 | Box 61b \ 3 scan0053 | |
| Comparison table of armature specifications for various motor types. | 26th Apr 1917 | Box 61b \ 3 scan0054 | |
| Comparison table of field winding specifications for different motor types. | 28th Apr 1917 | Box 61b \ 3 scan0055 | |
| Comparative data sheet for motor brush particulars and weights. | 28th Apr 1917 | Box 61b \ 3 scan0056 | |
| Comparative table of brake efficiency test results for various electric starter motors. | 28th Apr 1917 | Box 61b \ 3 scan0057 | |
| Copy of a telegram sent to 'R' detailing specifications for various types of brushes. | 5th Apr 1919 | Box 61b \ 3 scan0058 | |
| Test sheet outlining various procedures for motor performance evaluation. | 2nd Oct 1919 | Box 61b \ 3 scan0059 | |
| Note on the current taken by the starter motor when turning the engine. | 6th Oct 1910 | Box 61b \ 3 scan0060 | |
| Drawings and modifications for the starter motor on the American 40/50 HP chassis. | 27th Nov 1919 | Box 61b \ 3 scan0061 | |
| Request to commence work on detail drawings for an attached document. | 27th Nov 1919 | Box 61b \ 3 scan0062 | |
| Ongoing complaints about engine starter clutch engagement and proposing potential solutions. | 28th Nov 1919 | Box 61b \ 3 scan0063 | |
| Performance and proposed alterations to the chassis engine starter mechanism. | 1st Dec 1919 | Box 61b \ 3 scan0064 | |
| Continued discussion regarding the operation of an actuator box, push-button switch, and actuator coils. | 11th Dec 1919 | Box 61b \ 3 scan0065 | |
| Continued discussion on battery performance in cold weather and the need for a more powerful starting motor for use in the United States. | 3rd Jun 1920 | Box 61b \ 3 scan0066 | |
| Report page discussing the improper handling of a priming device. | 3rd Jun 1920 | Box 61b \ 3 scan0067 | |
| Request for particulars, illustrations and models of different armature windings for small dynamos and motors. | 7th May 1920 | Box 61b \ 3 scan0068 | |
| Requesting a critique on dynamo and motor curves, and discussing the retention of reduction gear on the motor. | 18th May 1920 | Box 61b \ 3 scan0069 | |
| Design and performance comparison basis for series-wound chassis starting motors. | 11th Jun 1920 | Box 61b \ 3 scan0070 | |
| List of specifications for an armature circuit, commutator, and brushes. | 24th Jun 1920 | Box 61b \ 3 scan0071 | |
| Comparison list of various dynamo and motor models for design and performance evaluation. | 24th Jun 1920 | Box 61b \ 3 scan0072 | |
| Parts submitted from America, discussing Springfield's preference for local parts over proven R.R. designed parts. | 16th Jul 1920 | Box 61b \ 3 scan0073 | |
| Comparison between the R-R motor and the Bijur motor, arguing against using the latter on Rolls-Royce cars. | 16th Jul 1920 | Box 61b \ 3 scan0074 | |
| Parts standardization between factories and production strategy for a new car model. | 16th Jul 1920 | Box 61b \ 3 scan0075 | |
| Generator and dynamo quality, comparing suppliers Lucas, Watford Magneto and Bijur, and considering future improvements. | 16th Jul 1920 | Box 61b \ 3 scan0076 | |
| Technical summary of the Delage Car's engine and electrical equipment. | 23th Jul 1920 | Box 61b \ 3 scan0077 | |
| Continued description of a press button switch and an earthed wiring scheme for a vehicle. | 24th Jul 1920 | Box 61b \ 3 scan0078 | |
| Delay in addressing starter motor performance testing. | 24th Jul 1920 | Box 61b \ 3 scan0079 | |
| The silent operation of the Smith Dynamo. | 29th Jul 1920 | Box 61b \ 3 scan0080 | |
| Risk of accidents from backfires when starting cars and the need to fit a self-starter. | 20th Aug 1920 | Box 61b \ 3 scan0081 | |
| The manual starting procedure to avoid backfire and the ultimate solution of fitting a self-starter. | 20th Aug 1920 | Box 61b \ 3 scan0082 | |
| Outlining the inspection and reporting procedure for dynamos and starter motors. | 27th Sep 1920 | Box 61b \ 3 scan0083 | |
| Comparison list of various 12 volt and 6 volt chassis starter motors and their reference numbers. | 28th Sep 1920 | Box 61b \ 3 scan0084 | |
| Historical consideration of using a combined starter and dynamo versus two separate machines. | 17th Nov 1920 | Box 61b \ 3 scan0085 | |
| List of ratios of field resistance to armature resistance for various starter motors. | 15th Dec 1920 | Box 61b \ 3 scan0086 | |
| Table of performance particulars for chassis starters on 40/50 and Goshawk models. | 17th Dec 1920 | Box 61b \ 3 scan0087 | |
| The use of Bakelite for impregnating electrical components such as coils, armatures, and condensers. | 21th Dec 1920 | Box 61b \ 3 scan0088 | |
| Unsuitability of Edison or Alkaline type batteries for cars compared to lead-acid batteries. | 31th Dec 1920 | Box 61b \ 3 scan0089 | |
| Comparing Alkaline and Edison type batteries against the standard Exide lead cell battery. | 31th Dec 1920 | Box 61b \ 3 scan0090 | |
| Continued section discussing the lifespan and replacement of an acid battery. | 31th Dec 1920 | Box 61b \ 3 scan0091 | |
| Preference for separate starter and dynamo machines over combined units for simplicity and ease of repair. | 10th Jan 1921 | Box 61b \ 3 scan0092 | |
| Standardization of dynamo and starter motor carcase dimensions for different car models. | 23th Feb 1921 | Box 61b \ 3 scan0093 | |
| Letter to The Morgan Crucible Co. requesting a recommendation for a new grade of starter motor brush. | 27th Dec 1928 | Box 61b \ 3 scan0094 | |
| Letter from The Morgan Crucible Company Limited regarding starter motor brushes and friction coefficients. | 1st Jan 1929 | Box 61b \ 3 scan0095 | |
| Experimental order for six sets of starter motor brushes from the Morgan Crucible Co. | 1st Jan 1929 | Box 61b \ 3 scan0096 | |
| Letter to The Morgan Crucible Co. Ltd. placing an order for starter motor brushes. | 2nd Jan 1929 | Box 61b \ 3 scan0097 | |
| Proposal for a new modification to a starter motor system using a double reduction gear. | 26th Jan 1929 | Box 61b \ 3 scan0098 | |
| Diagram illustrating the engagement mechanism of a spring-loaded pinion with a flywheel gear. | 14th May 1929 | Box 61b \ 3 scan0099 | |
| Experimental Morganite CM5H brushes for the SS starter motor. | 14th May 1929 | Box 61b \ 3 scan0100 | |
| The efficiency principles and testing conditions for a series starter motor. | 15th Jul 1929 | Box 61b \ 3 scan0101 | |
| The relationships between E.M.F's, fluxes, and torques using equations. | 15th Jul 1929 | Box 61b \ 3 scan0102 | |
| Theoretical analysis of motor efficiency using ratios of electromotive forces, magnetic fluxes, and torques. | 15th Jul 1929 | Box 61b \ 3 scan0103 | |
| Page detailing formulas for motor efficiency and armature reaction. | 15th Jul 1929 | Box 61b \ 3 scan0104 | |
| Calculations and test results for a standard starter motor. | 17th Jul 1928 | Box 61b \ 3 scan0105 | |
| Comparative table of starter motor particulars. | 17th Jul 1928 | Box 61b \ 3 scan0106 | |
| Page of calculations for a starter motor, detailing conductor conversion formulas. | 13th Jul 1928 | Box 61b \ 3 scan0107 | |
| Table of static torque data for various starter motors. | 24th Jan 1929 | Box 61b \ 3 scan0108 | |
| List of design data points required for starter motors, covering dimensions, weights, and magnetic circuit information. | 24th Jan 1929 | Box 61b \ 3 scan0109 | |
| List of parameters and specifications for field and armature circuits. | 24th Jan 1929 | Box 61b \ 3 scan0110 | |
| List of specifications for a commutator and brushes. | 24th Jan 1929 | Box 61b \ 3 scan0111 | |
| Comparison table of dimensions and weights for various 40/50 HP size, Group A starter motors. | 3rd Mar 1921 | Box 61b \ 3 scan0112 | |
| Design specifications for new dynamos and motors, including dimensions and performance requirements. | 3rd Mar 1921 | Box 61b \ 3 scan0113 | |
| Specifications for a dynamo, detailing field winding, armature teeth, and shaft design. | 10th Dec 1920 | Box 61b \ 3 scan0114 | |
| List of copper weights for the field windings of various starter motors. | 14th Mar 1921 | Box 61b \ 3 scan0115 | |
| Providing an additional sheet of starter motor dimensions for carcases and armatures. | 17th Mar 1921 | Box 61b \ 3 scan0116 | |
| Table of dimensions for various starter motors. | 9th Mar 1921 | Box 61b \ 3 scan0117 | |
| Acquisition and testing of C.A.V. starter motors for the 40/50 Chassis and Goshawk II. | 23th Mar 1921 | Box 61b \ 3 scan0118 | |
| Extract from a meeting discussing electrical matters, specifically starter motor construction for the 'Goshawk I' engine. | 19th Mar 1921 | Box 61b \ 3 scan0119 | |
| In-house manufacturing of starter motors and dynamos for the 'Goshawk II' project. | 8th Apr 1921 | Box 61b \ 3 scan0120 | |
| Adaptation of dynamos and motors from other makers for the Goshawk II chassis. | 11th Apr 1921 | Box 61b \ 3 scan0121 | |
| Examining a motor for trial on a 40/50 chassis and sourcing prices for two C.A.V. motor types. | 11th Apr 1921 | Box 61b \ 3 scan0122 | |
| Table of proposed standard sizes for dynamos and motors for large and small cars. | 22th Apr 1921 | Box 61b \ 3 scan0123 | |
| Experimental starter motor list. | 6th May 1921 | Box 61b \ 3 scan0124 | |
| The fundamental formulas for a multipolar D.C. machine. | 20th May 1921 | Box 61b \ 3 scan0125 | |
| Mr. Royce's remarks on the manufacture of dynamos and starter motors. | 2nd Jun 1921 | Box 61b \ 3 scan0126 | |
| Armature design for four-pole machines and the Goshawk I dynamo. | 2nd Jun 1921 | Box 61b \ 3 scan0127 | |
| Distributing updated and extended tables for dynamos and starter motors for the large car. | 3rd Jun 1921 | Box 61b \ 3 scan0128 | |
| Comparison table of starter motor specifications for large cars. | 1st Jun 1921 | Box 61b \ 3 scan0129 | |
| Telegram instructing a change in the diameter of dynamos and motor carcases to align with other manufacturers. | 2nd Jun 1921 | Box 61b \ 3 scan0130 | |
| Communicating a telegram from Mr. Royce regarding new carcase dimensions for dynamos and starter motors. | 8th Jun 1921 | Box 61b \ 3 scan0131 | |
| Response to U.S.A. complaints regarding starter motor and carburettor modifications. | 8th Jun 1921 | Box 61b \ 3 scan0132 | |
| Design and specifications for 'Goshawk I' and 'Goshawk II' dynamos and motors for the 40HP chassis. | 9th Jun 1921 | Box 61b \ 3 scan0133 | |
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