| Description | Date | Identifier | |
| List of material specification changes for various electrical components and coils. | 24th Mar 1921 | Box 34 \ 3 Scan079 | |
| Letter discussing the permanency of insulation and recommending Enamelite wire from the Acme Wire Co. for coil winding. | 17th Jun 1921 | Box 34 \ 3 Scan080 | |
| The starter press button for the 4EX vehicle returned from America. | 17th Jun 1921 | Box 34 \ 3 Scan081 | |
| Letter from America to London regarding a proposed change to the starter press button for the 4-EX model. | 18th Aug 1921 | Box 34 \ 3 Scan082 | |
| Instruction about changing the cover of a Type 40/50 push-button switch from German Silver to a moulded material. | 16th Aug 1923 | Box 34 \ 3 Scan083 | |
| The trial of a Bakelite press button starter switch on the 40/50 HP Works Trials Car, 1-LW. | 8th Jan 1924 | Box 34 \ 3 Scan084 | |
| Asking if a standardisation sheet is required for a 40/50 push button switch modification. | 14th Jan 1924 | Box 34 \ 3 Scan085 | |
| The testing and potential standardization of a chassis push button switch. | 18th Jan 1924 | Box 34 \ 3 Scan086 | |
| Standardisation of a push button switch cover made in Bakelite. | 31th Jan 1924 | Box 34 \ 3 Scan087 | |
| The trial of a 40/50 press button starter switch made from Bakelite. | 1st Jan 1924 | Box 34 \ 3 Scan088 | |
| Stock and cost for Bakelite push button switch covers. | 7th Feb 1924 | Box 34 \ 3 Scan089 | |
| Specification sheet detailing the carbon gap, copper gap, and button depression for a push-button switch. | 13th Feb 1925 | Box 34 \ 3 Scan090 | |
| Urgent experiment to determine the magnetic flux of a self-starter carcass for aero engines. | 24th Mar 1915 | Box 34 \ 3 Scan091 | |
| Continued memorandum detailing experimental procedures for testing an armature's performance and heat limits. | 15th Feb 1910 | Box 34 \ 3 Scan092 | |
| Urgent particulars and testing for a starting apparatus motor. | 7th Apr 1915 | Box 34 \ 3 Scan093 | |
| Test results for a motor and generator with specifications for their armatures and field coils. | 15th Feb 1916 | Box 34 \ 3 Scan094 | |
| Test report on motor and generator performance using 'Le Carbone' and 'Hard Corbon' brushes. | 15th May 1916 | Box 34 \ 3 Scan095 | |
| Providing feedback and suggestions for improving the test of a self-starter motor. | 19th Apr 1915 | Box 34 \ 3 Scan096 | |
| Machine coupling methods and analysing discrepancies in motor test results. | 16th Feb 1916 | Box 34 \ 3 Scan097 | |
| Continuation of a report discussing brake horse power and core losses at constant speed. | 15th Feb 1910 | Box 34 \ 3 Scan098 | |
| Testing procedure for a Self Starter Dynamo and Motor to ascertain core losses. | 11th May 1915 | Box 34 \ 3 Scan099 | |
| Armature windings, voltage, flux, and the use of carbon brushes. | 16th May 1916 | Box 34 \ 3 Scan100 | |
| Requesting a car starter motor casing for inspection and power efficiency tests. | 22th Sep 1916 | Box 34 \ 3 Scan101 | |
| From M. Olley to Mr. Clark regarding propeller and flywheel testing. | 25th Sep 1916 | Box 34 \ 3 Scan102 | |
| Notification of the receipt of Hard Drawn High Conductivity Copper Bar from Messrs. Collier Bros for an electrical self-starter brake test. | 30th Jun 1917 | Box 34 \ 3 Scan103 | |
| Request for parts to conduct power and efficiency tests on a Car Starter motor using a Hopkinson test. | 26th Sep 1916 | Box 34 \ 3 Scan104 | |
| Power and efficiency tests of a car starter motor. | 28th Sep 1916 | Box 34 \ 3 Scan105 | |
| Arrangement of coils in a 45 slot wave wound armature. | 3rd Aug 1914 | Box 34 \ 3 Scan106 | |
| Diagram showing the arrangement of coils within an armature slot. | 25th Jul 1919 | Box 34 \ 3 Scan107 | |
| Drawing showing the arrangement of coils in armature slots for a 17 slot, 51 commutator bar armature. | 23th Oct 1911 | Box 34 \ 3 Scan108 | |
| Requesting sheet steel for power and efficiency tests on a car starter motor. | 10th Oct 1916 | Box 34 \ 3 Scan109 | |
| Power and efficiency tests of a self-starter motor. | 13th Oct 1916 | Box 34 \ 3 Scan110 | |
| Request for production cards for an experimental Commutator sleeve and Armature for starter motor tests. | 20th Oct 1916 | Box 34 \ 3 Scan111 | |
| Instruction sheet for an R.H. Efficiency test, detailing required parts and an annulled instruction. | 20th Oct 1916 | Box 34 \ 3 Scan112 | |
| The urgent purchase of a combined ampere shunt for car starter motor experiments. | 4th Dec 1916 | Box 34 \ 3 Scan113 | |
| Notification regarding the receipt of a combined ampere Shunt for a Weston Standard Portable Milli-Voltmeter. | 12th Dec 1916 | Box 34 \ 3 Scan114 | |
| The losses tests performed on a self-starter motor. | 21th Dec 1916 | Box 34 \ 3 Scan115 | |
| Experimental method for motor testing, including a circuit diagram. | 15th Feb 1916 | Box 34 \ 3 Scan116 | |
| Experiments on starter motor power requirements and the specifications of two different armatures. | 15th Feb 1916 | Box 34 \ 3 Scan117 | |
| Specifications for an armature winding and a procedure for determining various experimental losses. | 15th Feb 1916 | Box 34 \ 3 Scan118 | |
| Preliminary experiments and issues encountered with brush-short-circuited currents during motor testing. | 18th Mar 1916 | Box 34 \ 3 Scan119 | |
| Test results and analysis of losses in various armatures. | 15th May 1918 | Box 34 \ 3 Scan120 | |
| The determination of brush friction and brush-short-circuited currents for four different armatures. | 15th Feb 1916 | Box 34 \ 3 Scan121 | |
| Volt excitation curve tests for various armatures using modified commutator brushes. | 15th Feb 1916 | Box 34 \ 3 Scan122 | |
| Page of notes on electrical excitation and magnetic flux calculations. | 16th Mar 1916 | Box 34 \ 3 Scan123 | |
| Analysis and comparison of different armature designs based on core losses and volt excitation curves. | 15th May 1916 | Box 34 \ 3 Scan124 | |
| Armature testing, specifically brake tests, in response to a request from Mr. Royce. | 15th May 1916 | Box 34 \ 3 Scan125 | |
| Proposal to carry out oil pump experiments. | 15th May 1916 | Box 34 \ 3 Scan126 | |
| Graph showing Hysteresis and Eddy Current losses in a self-starter motor armature at 1500 RPM. | 15th May 1916 | Box 34 \ 3 Scan127 | |
| Graph showing hysteresis and eddy current losses in unwound and wound 24 slot armatures of a self-starter motor at 1500 R.P.M. | 15th May 1916 | Box 34 \ 3 Scan128 | |
| Graph showing hysteresis and eddy current losses in 45 slot armatures of a self-starter motor at 1500 R.P.M. | 15th May 1916 | Box 34 \ 3 Scan129 | |
| Graph showing the magnitude of brush-short-circuited currents at various excitations. | 15th May 1916 | Box 34 \ 3 Scan130 | |
| Graph of volt-excitation curves for a starter motor with narrow brushes. | 1st Jan 1917 | Box 34 \ 3 Scan131 | |
| The results of losses tests on self-starter motor armatures. | 1st Jan 1917 | Box 34 \ 3 Scan132 | |
| Instruction memo with a sketch to manufacture two brass bobbins for electrical self-starter experiments. | 8th Jan 1917 | Box 34 \ 3 Scan133 | |
| Extract from a list of experimental parts regarding a self-starter issue with higher compression. | 15th Jun 1917 | Box 34 \ 3 Scan134 | |
| Letter regarding the forwarding of a motor armature, a new winding model, and a 4-volt coil for inspection. | 15th Oct 1917 | Box 34 \ 3 Scan135 | |
| Electrical resistance specifications for a self-starter motor with a 45-slot armature. | 5th Mar 1918 | Box 34 \ 3 Scan136 | |
| Brake test results for a self-starter motor with a 45 slot armature. | 5th Mar 1918 | Box 34 \ 3 Scan137 | |
| Graph detailing the brake efficiency test results for a starter motor with a 45 slot armature. | 19th Mar 1928 | Box 34 \ 3 Scan138 | |
| Graph detailing the results of a starter motor brake efficiency test for a 45 slot armature. | 22th Mar 1913 | Box 34 \ 3 Scan139 | |
| Performance graph comparing the Brake Horsepower and Efficiency curves of a starter motor against torque. | 22th Mar 1913 | Box 34 \ 3 Scan140 | |
| Comparing the resistances of field and armature windings for C.A.V., Lucas, and R.R. self-starter motors. | 14th Mar 1918 | Box 34 \ 3 Scan141 | |
| Self-starter motor brake efficiency tests, including comparisons and modifications for improved commutation. | 22th Mar 1918 | Box 34 \ 3 Scan142 | |
| Specifications and test results for a starter motor, including component weights and electrical resistances. | 22th Mar 1918 | Box 34 \ 3 Scan143 | |
| Investigation into motor efficiency and the weight of copper in various motor windings as requested by Mr. Royce. | 22th Mar 1918 | Box 34 \ 3 Scan144 | |
| Brake test results for a self starter motor with a 17 slot armature. | 25th Mar 1918 | Box 34 \ 3 Scan145 | |
| Graph showing the results of a starter motor brake efficiency test for a 17-slot armature. | 26th Feb 1918 | Box 34 \ 3 Scan146 | |
| Mostly blank document page with a red date stamp from the Derby office. | 26th Feb 1918 | Box 34 \ 3 Scan147 | |
| Graph showing the brake efficiency test results for a 17-slot starter motor. | 12th Apr 1918 | Box 34 \ 3 Scan148 | |
| Telegram received by telephone regarding testing an R R starter motor. | 26th Mar 1918 | Box 34 \ 3 Scan149 | |
| Brake test results for a self-starter motor with a 24-slot armature. | 4th Apr 1918 | Box 34 \ 3 Scan150 | |
| Graph detailing a starter motor brake efficiency test for a 29 slot armature. | 24th May 1918 | Box 34 \ 3 Scan151 | |
| Graph showing the results of a starter motor brake efficiency test for a 24 slot armature. | 24th May 1928 | Box 34 \ 3 Scan152 | |
| Performance and design of an electrical starter motor compared to a Lucas model. | 5th Apr 1918 | Box 34 \ 3 Scan153 | |
| Summary of particulars and test results for various self-starter motors. | 8th Apr 1918 | Box 34 \ 3 Scan154 | |
| The winding configurations of C.A.V. and R.R. starter motors. | 8th Apr 1918 | Box 34 \ 3 Scan155 | |
| Comparison of brake efficiency test results for various motors. | 5th Apr 1918 | Box 34 \ 3 Scan156 | |
| Brake test report for a self-starter motor with a 45 slot armature and specific field coil configuration. | 12th Apr 1918 | Box 34 \ 3 Scan157 | |
| Graph showing the results of a starter motor brake efficiency test for a 45 slot armature. | 18th Apr 1918 | Box 34 \ 3 Scan158 | |
| Graph showing the results of a starter motor brake efficiency test for a 45 slot armature. | 12th Apr 1918 | Box 34 \ 3 Scan159 | |
| Self-starter motor brake test. | 12th Apr 1918 | Box 34 \ 3 Scan160 | |
| Use of a motor for starting the Condor aero engine, comparing it to a Lucas A.510 motor, detailing available parts, and mentioning a proposed test. | 12th Apr 1918 | Box 34 \ 3 Scan161 | |
| Dispatch of blueprints for self-starter motor brake efficiency tests. | 15th Apr 1918 | Box 34 \ 3 Scan162 | |
| Testing procedures for self-starting motors. | 17th Apr 1918 | Box 34 \ 3 Scan163 | |
| Comparison between an R.R. motor and a Lucas motor, focusing on horse power, efficiency, and safety. | 17th Apr 1918 | Box 34 \ 3 Scan164 | |
| Starter motor design, addressing field coil windings, power output, and testing for car and aero engines. | 15th Dec 1920 | Box 34 \ 3 Scan165 | |
| Calculations of flux per pole for an old type R.R. starter motor. | 15th Dec 1920 | Box 34 \ 3 Scan166 | |
| Data table comparing chassis starter particulars for the 40/50 and Goshawk models. | 17th Dec 1920 | Box 34 \ 3 Scan167 | |
| Table comparing chassis starter rolling condition figures for various motor models. | 11th May 1927 | Box 34 \ 3 Scan168 | |
| Graph showing starter motor brake efficiency against amperes, plotting voltage, torque, and flux per pole. | 7th Oct 1912 | Box 34 \ 3 Scan169 | |
| Very faint technical diagram showing various angled lines with ratio annotations. | 23th Apr 1927 | Box 34 \ 3 Scan170 | |
| Graph showing the performance curves for a starter motor. | 16th Jun 1928 | Box 34 \ 3 Scan171 | |
| Test observation sheet for a starter motor brake test. | 22th Apr 1927 | Box 34 \ 3 Scan172 | |
| Table of smoothed and derived results from a starter motor brake test. | 21th Apr 1927 | Box 34 \ 3 Scan173 | |
| Test report sheet detailing starter motor brake test results. | 21th Apr 1927 | Box 34 \ 3 Scan174 | |
| Test results for a starter motor, detailing open-circuit E.M.F. and flux calculations. | 21th Apr 1927 | Box 34 \ 3 Scan175 | |
| Data table showing the results of starter motor efficiency ratio tests. | 14th Jun 1928 | Box 34 \ 3 Scan176 | |
| Request for a tiny piece of platinum for a trembler. | 18th Jan 1918 | Box 34 \ 4 Scan001 | |
| Request for a small dynamo with a vibrating regulator for charging cells on an R.R. car. | 15th Jan 1918 | Box 34 \ 4 Scan002 | |
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