| Description | Date | Identifier | |
| Letter discussing the running down of batteries on Post War Cars and generator performance. | 23th Oct 1920 | Box 48 \ 3 Scan122 | |
| Letter discussing charging current issues, comparing battery performance to other cars, and requesting alternative generators. | 23th Oct 1920 | Box 48 \ 3 Scan123 | |
| Technical memo discussing the performance of the dynamo and cutout on post-war cars. | 25th Oct 1920 | Box 48 \ 3 Scan124 | |
| Technical memorandum disagreeing with findings about the dynamo's lowest cutting-in speed and the effect of the third brush position. | 25th Oct 1920 | Box 48 \ 3 Scan125 | |
| Issue of batteries running down on post-war cars, to be raised at the next conference. | 9th Nov 1920 | Box 48 \ 3 Scan126 | |
| Letter from Rolls Royce of America discussing issues with the Lucas dynamo on post-war cars, specifically regarding noise and cutting-in speed. | 12th Nov 1920 | Box 48 \ 3 Scan127 | |
| Procedure to resolve noise issues with Lucas dynamos by adjusting the control brush. | 20th Aug 1920 | Box 48 \ 3 Scan128 | |
| Letter discussing dynamo performance and battery charging requirements under various driving conditions. | 25th Nov 1920 | Box 48 \ 3 Scan129 | |
| Comparison of Bosch, Lucas, and Bijur dynamo systems, noting performance and voltage control issues. | 25th Nov 1920 | Box 48 \ 3 Scan130 | |
| Statement on the final position regarding the car's dynamo and the need for elaborate testing. | 25th Nov 1920 | Box 48 \ 3 Scan131 | |
| Difficulty with Mrs. Sauber's Chassis 5-FW and a related conference discussion. | 4th Dec 1920 | Box 48 \ 3 Scan132 | |
| Customer complaint regarding a flat battery, identifying driver error and usage as the cause, and suggesting a garage charging board. | 3rd Dec 1920 | Box 48 \ 3 Scan133 | |
| Internal memorandum discussing the acknowledged weakness of the dynamo-battery system and efforts to source a better generator. | 7th Dec 1920 | Box 48 \ 3 Scan134 | |
| Test results for the effect of changing the control brush position on the balancing speed of a Lucas E.575 dynamo. | 7th Dec 1920 | Box 48 \ 3 Scan135 | |
| Dynamo Battery System, acknowledging a previous communication and confirming the topic will be raised at an upcoming conference. | 8th Dec 1920 | Box 48 \ 3 Scan136 | |
| Tests on Lucas dynamos regarding the effect of retarding brushes on cutting-in speeds for post-war cars. | 13th Dec 1920 | Box 48 \ 3 Scan137 | |
| Specification for the electrical operation of a cut-out, detailing voltage limits under cold and hot conditions. | 13th Dec 1920 | Box 48 \ 3 Scan138 | |
| The late operation of Lucas cut-outs and a request for clarification on a previous note. | 13th Dec 1920 | Box 48 \ 3 Scan139 | |
| Extract concerning complaints from the U.S.A. about batteries running down and discussing alternative dynamo options. | 8th Jun 1921 | Box 48 \ 3 Scan140 | |
| Vibrator regulators, the state of electrical components for cars sent from England, and issues with leaky Exide battery cells. | 1st Jul 1921 | Box 48 \ 3 Scan141 | |
| Comparing standard and longer Lucas dynamos for the 40/50 chassis, focusing on battery charging performance. | 1st Jul 1921 | Box 48 \ 3 Scan142 | |
| Effect of changing axle ratios on dynamo cutting-in speed. | 8th Jul 1921 | Box 48 \ 3 Scan143 | |
| Test results of a lengthened Lucas dynamo and advising against its adoption. | 9th Nov 1921 | Box 48 \ 3 Scan144 | |
| Letter from motor lamp manufacturer Blériot Limited regarding cut-outs for electrical equipment. | 2nd Nov 1920 | Box 48 \ 3 Scan145 | |
| Diagram of a Bleriot Compensated Cut-out circuit. | 2nd Nov 1920 | Box 48 \ 3 Scan146 | |
| Description of the Bleriot Compensated Cut-out and its operational advantages. | 2nd Nov 1920 | Box 48 \ 3 Scan147 | |
| Description of the Bleriot Compensated Cut-out component. | 24th Nov 1920 | Box 48 \ 3 Scan148 | |
| Test instructions and electrical readings for a Blériot phi. cut-out. | 24th Nov 1920 | Box 48 \ 3 Scan149 | |
| Electrical test results for shunt and series coils. | 24th Jan 1919 | Box 48 \ 3 Scan150 | |
| Test results for a shunt coil, detailing voltage and amperage readings before and after operation. | 24th Jan 1919 | Box 48 \ 3 Scan151 | |
| Electrical measurements for shunt and series coils during operation. | 24th Jan 1919 | Box 48 \ 3 Scan152 | |
| Instructions regarding testing a 'Bleriot Phi' cut-out with extra auxiliary resistance. | 25th Nov 1920 | Box 48 \ 3 Scan153 | |
| Test results for a shunt coil, detailing voltage, amperage, and wattage at various operational states. | 24th Jan 1919 | Box 48 \ 3 Scan154 | |
| Test results for electrical measurements on shunt and series coils. | 24th Jan 1919 | Box 48 \ 3 Scan155 | |
| Test results for an electrical component, recording voltage, amperage, and resistance during operation and de-operation. | 24th Jan 1919 | Box 48 \ 3 Scan156 | |
| Electrical test results for shunt and series coils. | 24th Jan 1919 | Box 48 \ 3 Scan157 | |
| Wiring diagram for a Bleriot PHI cutout. | 17th Nov 1920 | Box 48 \ 3 Scan158 | |
| Examination report on the 'Bleriot Phi' cut-out instrument, detailing its construction and operation. | 6th Dec 1920 | Box 48 \ 3 Scan159 | |
| Analysis of long and short shunt windings and a discussion on cut-out defects and the Bleriot Compensated Cut-out. | 6th Dec 1920 | Box 48 \ 3 Scan160 | |
| Analysis of manufacturers' claims regarding the performance of electrical cut-out contacts and compensating windings. | 6th Dec 1920 | Box 48 \ 3 Scan161 | |
| Technical analysis of the Bleriot Phi electrical cut-out, detailing its operation through resistance and ampere turns. | 6th Dec 1920 | Box 48 \ 3 Scan162 | |
| Graph of characteristic curves for cut-out operation with specific reference to the Bleriot PHI cut-out. | 6th Dec 1920 | Box 48 \ 3 Scan163 | |
| Results of electrical experiments on an instrument's coils and armature. | 6th Dec 1920 | Box 48 \ 3 Scan164 | |
| Electrical test results and resistance adjustments for a dynamo and battery system following a two-hour run. | 6th Dec 1920 | Box 48 \ 3 Scan165 | |
| Test results for a cut-out component, detailing current and voltage measurements under various conditions. | 1st Dec 1920 | Box 48 \ 3 Scan166 | |
| Comparing a new cut-out instrument with the Lucas and Smith types. | 6th Dec 1920 | Box 48 \ 3 Scan167 | |
| Instruction sheet detailing the weight of a Bleriot Phi cut-out. | 7th Dec 1920 | Box 48 \ 3 Scan168 | |
| Requesting the despatch of a 'Bleriot Phi Cut-out' to Mr. Royce for his examination. | 10th Dec 1920 | Box 48 \ 3 Scan169 | |
| Required improvements to the Bleriot electrical cutout and potential replacements. | 15th Dec 1920 | Box 48 \ 3 Scan170 | |
| Analysis of the Bleriot Phi Cut-Out, focusing on the functionality of its compensating winding. | 22th Dec 1920 | Box 48 \ 3 Scan171 | |
| The electrical operation of a cut-out, detailing reverse current tests that exceed specified limits. | 22th Dec 1920 | Box 48 \ 3 Scan172 | |
| Minutes of a Works Committee Conference discussing the Bleriot electrical cut-out. | 22th Dec 1920 | Box 48 \ 3 Scan173 | |
| Authorizing the order of Bleriot Phi Cut-outs for experimental purposes. | 23th Dec 1920 | Box 48 \ 3 Scan174 | |
| Instruction note regarding the receipt of a Bleriot Phi Cut-out part from the stores. | 23th Dec 1920 | Box 48 \ 3 Scan175 | |
| Letter from Bleriot Limited offering their Beriot cutout and A.T. Speedometer for testing, and detailing terms for quantity orders. | 30th Dec 1920 | Box 48 \ 3 Scan176 | |
| Fitting of a Bleriot electrical cutout in place of Smith and Lucas models. | 12th Dec 1920 | Box 48 \ 3 Scan177 | |
| Instruction sheet with test results for a Blériot-Phi Cut-out, showing operational values under hot and cold conditions. | 31th Dec 1920 | Box 48 \ 3 Scan178 | |
| Test results for a Bleriot-Phi cut-out under cold and hot operating conditions. | 24th Jan 1919 | Box 48 \ 3 Scan179 | |
| Instructions and test results for a Bleriot-Phi electrical cut-out with a compensating coil. | 3rd Jan 1921 | Box 48 \ 3 Scan180 | |
| Instructions for a Bleriot-Phi Cut-out regarding battery connection, voltage, and current measurements. | 24th Jan 1919 | Box 48 \ 3 Scan181 | |
| Using a car for testing experimental parts like Tungsten contact points and Bleriot cutouts, replacing the existing Lucas cutout. | 31th Dec 1920 | Box 48 \ 3 Scan182 | |
| Specification for the inspection and testing of a Bleriot Phi Cut-out. | 4th Jan 1921 | Box 48 \ 3 Scan183 | |
| Hand-drawn wiring diagram for a dynamo, cut-out unit, meters and battery. | 11th Aug 1920 | Box 48 \ 3 Scan184 | |
| Instructions for adapting the Bleriot Phi cut-out to the standard electrical system. | 4th Jan 1921 | Box 48 \ 3 Scan185 | |
| Wiring diagram illustrating the adaptation of a Blenot Phi Cut-out to a standard electrical chassis system. | 4th Jan 1921 | Box 48 \ 3 Scan186 | |
| Sending the specification for the Bleriot Phi Cut-out to Messrs. Bleriot. | 6th Jan 1921 | Box 48 \ 3 Scan187 | |
| The fitting and standardisation of a Bleriot Phi cut-out on experimental cars. | 6th Jan 1921 | Box 48 \ 3 Scan188 | |
| Request to supply a painted outside case for a battery and a decision not to fit Tungsten contact points or a Bleriot cutout. | 6th Jan 1921 | Box 48 \ 3 Scan189 | |
| Correspondence concerning the adjustment of specifications for the Bleriot PHI. Cut-out component. | 10th Jan 1921 | Box 48 \ 3 Scan190 | |
| Notification of the new address for Bleriot Ltd. and the closure of their Long Acre showrooms. | 24th Jan 1921 | Box 48 \ 3 Scan191 | |
| Confirmation of fitting a Bleriot Phi Cutout to chassis 2.EX and modifying the Lucas Switch Box. | 29th Jan 1921 | Box 48 \ 3 Scan192 | |
| Differences and issues found in a batch of Bleriot cut-out components compared to the original sample. | 18th Feb 1921 | Box 48 \ 3 Scan193 | |
| Testing of six cut-outs and an urgent request for a specific cut-out for Mr. Royce's car 6 EX. | 18th Feb 1921 | Box 48 \ 3 Scan194 | |
| Letter to Bleriot Ltd. detailing a report on differences found in supplied 'Cut-out' samples. | 19th Feb 1921 | Box 48 \ 3 Scan195 | |
| Page 2 of a letter to Messrs. Bleriot Ltd. regarding issues with supplied cut-outs and a request for a replacement. | 19th Feb 1921 | Box 48 \ 3 Scan196 | |
| 6.EX car, detailing a fix for the petrol level indicator and outstanding tasks to complete the vehicle. | 2nd Feb 1921 | Box 48 \ 3 Scan197 | |
| Correspondence regarding an enquiry for a Bleriot Cut-out. | 24th Feb 1921 | Box 48 \ 3 Scan198 | |
| Copy of a letter received from Bleriot Limited regarding the supply of cut-outs. | 23th Feb 1921 | Box 48 \ 3 Scan199 | |
| The latest Bleriot-Phi starting and lighting equipment. | 25th Feb 1921 | Box 48 \ 3 Scan200 | |
| Page 2 of a document describing the construction and output control of a dynamo. | 10th Dec 1920 | Box 48 \ 3 Scan201 | |
| The operation of a voltage regulator and dynamo output control. | 10th Dec 1920 | Box 48 \ 3 Scan202 | |
| Continued description of a dynamo's voltage regulation circuit and its components. | 10th Dec 1920 | Box 48 \ 3 Scan203 | |
| Page describing the voltage regulation, Bleriot-Phi Dynamo specifications, and the starter motor. | 10th Dec 1920 | Box 48 \ 3 Scan204 | |
| Specifications for two starter motor types and a description of the switchboard's operation and features. | 10th Dec 1920 | Box 48 \ 3 Scan205 | |
| Technical description of a relay switch and the 'earthed return' wiring system. | 10th Dec 1920 | Box 48 \ 3 Scan206 | |
| Description of the lamp and starter circuit electrical connections. | 16th Dec 1920 | Box 48 \ 3 Scan207 | |
| Circuit diagram of the Bleriot-Phi system. | 15th Feb 1921 | Box 48 \ 3 Scan208 | |
| Ceasing further work on Bleriot PHI starting and lighting equipment. | 3rd Mar 1921 | Box 48 \ 3 Scan209 | |
| Request for a cost comparison of Bleriot, Smith and Lucas cut-outs. | 3rd Mar 1921 | Box 48 \ 3 Scan210 | |
| The swapping of a Bleriot cut-out part between experimental chassis 2 EX and 6 EX. | 7th Mar 1921 | Box 48 \ 3 Scan211 | |
| Issues with Bleriot Phi cut-outs for experimental purposes. | 9th Mar 1921 | Box 48 \ 3 Scan212 | |
| The unsatisfactory performance of recently received cut-out components and the investigation into their defects. | 9th Mar 1921 | Box 48 \ 3 Scan213 | |
| Defects in electrical cut-outs supplied by Messrs. Bleriot and requesting further communication. | 9th Mar 1921 | Box 48 \ 3 Scan214 | |
| Status and handling of Bleriot Phi cut-outs. | 9th Mar 1921 | Box 48 \ 3 Scan215 | |
| Sending five Bleriot Phi cut-outs back to the makers for readjustment. | 9th Mar 1921 | Box 48 \ 3 Scan216 | |
| Testing and fitting of a Bleriot Phi cut-out for use with the standard Lucas system. | 10th Mar 1921 | Box 48 \ 3 Scan217 | |
| Requesting a price comparison for electrical cut-outs from suppliers Smith, Bleriot, and Lucas. | 14th Mar 1921 | Box 48 \ 3 Scan218 | |
| Copy of a letter from Bleriot Limited regarding the pricing of cut-outs. | 17th Mar 1921 | Box 48 \ 3 Scan219 | |
| Note on the utilisation of the Bleriot Phi Cut-out, cross-referencing to the Bleriot Dynamo. | 18th Mar 1921 | Box 48 \ 3 Scan220 | |
| Design of an electrical cut-out and issues with supplier parts from Bleriot. | 21th Mar 1921 | Box 48 \ 3 Scan221 | |
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