| Description | Date | Identifier | |
| Series of test procedures for a dynamo, including load, voltage, and mechanical checks. | 20th Jul 1923 | Box 51 \ 1 Scan183 | |
| Procedure for testing the insulation of a machine using a lamp and alternating voltage. | 19th Jul 1923 | Box 51 \ 1 Scan184 | |
| Letter to Peto & Radford concerning the output of a 20 HP chassis generator and its effect on a battery's life. | 19th Jul 1923 | Box 51 \ 1 Scan185 | |
| Letter discussing adjustments to dynamo output and potential causes for excessive current. | 19th Jul 1923 | Box 51 \ 1 Scan186 | |
| The optimal balance between the dynamo output and the battery load at various speeds. | 19th Jul 1923 | Box 51 \ 1 Scan187 | |
| Comparison of three different output curves for the Goshawk dynamo. | 19th Jul 1923 | Box 51 \ 1 Scan188 | |
| Extract discussing failures and troubleshooting of dynamos on 20 HP vehicles. | 19th Jul 1923 | Box 51 \ 1 Scan189 | |
| Intermittent dynamo fault, resulting in its replacement and return for examination. | 19th Jul 1923 | Box 51 \ 1 Scan190 | |
| Inspection report on a faulty dynamo, detailing a burnt commutator, melted solder, and worn brushes. | 20th Jul 1923 | Box 51 \ 1 Scan191 | |
| Reducing the ampere output on the 20 HP chassis dynamo. | 20th Jul 1923 | Box 51 \ 1 Scan192 | |
| Letter from accumulator manufacturers Peto & Radford regarding ignition and charging currents. | 23th Jul 1923 | Box 51 \ 1 Scan193 | |
| Letter from Peto & Radford concerning high battery charging current and its potential to shorten battery life. | 24th Jul 1923 | Box 51 \ 1 Scan194 | |
| Query regarding increased dynamo output on the 20-HP chassis after use, which could be causing failures. | 24th Jul 1923 | Box 51 \ 1 Scan195 | |
| Letter to Messrs. Peto & Radford clarifying a query regarding ignition current. | 25th Jul 1923 | Box 51 \ 1 Scan196 | |
| Battery charging curves, brush issues, and overcharging prevention. | 25th Jul 1923 | Box 51 \ 1 Scan197 | |
| Conclusion of a letter responding to queries about cell temperature and headlamp operation. | 25th Jul 1923 | Box 51 \ 1 Scan198 | |
| Short note regarding the return of Dynamo No. 501 and referring to a separate document for remarks. | 25th Jul 1923 | Box 51 \ 1 Scan199 | |
| Excessive output and commutation issues with the 20 HP Dynamo, detailing investigation into brush alignment. | 25th Jul 1923 | Box 51 \ 1 Scan200 | |
| Rectifying alignment and bedding faults in machine brushes and suggesting alterations. | 25th Jul 1923 | Box 51 \ 1 Scan201 | |
| Dynamo performance, investigating commutator blackening and the bedding of brushes. | 25th Jul 1923 | Box 51 \ 1 Scan202 | |
| Continued page discussing the positive brush, commutator heating, and instructions for excessive output. | 25th Jul 1923 | Box 51 \ 1 Scan203 | |
| Specification for the inspection and readjustment of faulty dynamos. | 25th Jul 1923 | Box 51 \ 1 Scan204 | |
| Instructions for troubleshooting and adjusting machine brush gear, including a summary checklist. | 25th Jul 1923 | Box 51 \ 1 Scan205 | |
| Testing and return of Dynamo No. 29 after investigation. | 25th Jul 1923 | Box 51 \ 1 Scan206 | |
| List detailing dynamos fitted to various chassis models with remarks on their status or test results. | 26th Jul 1923 | Box 51 \ 1 Scan207 | |
| Testing and output curves for a 20 HP dynamo. | 27th Jul 1923 | Box 51 \ 1 Scan208 | |
| New type of brush gear for a 20 HP G.11 dynamo. | 11th Aug 1923 | Box 51 \ 1 Scan209 | |
| Experimental modifications to a dynamo, including changes to the pole and commutator assemblies. | 15th Aug 1923 | Box 51 \ 1 Scan210 | |
| Specification for the requirements needed to compare Goshawk and standard dynamo output curves. | 17th Aug 1923 | Box 51 \ 1 Scan211 | |
| The testing procedure for Goshawk dynamo output curves on an experimental car. | 17th Aug 1923 | Box 51 \ 1 Scan212 | |
| Instructions regarding available dynamos on chassis for representative curves. | 18th Aug 1923 | Box 51 \ 1 Scan213 | |
| Swapping and testing an experimental E dynamo and a No.161 dynamo on Goshawk engines. | 20th Aug 1923 | Box 51 \ 1 Scan214 | |
| Letter to Messrs. Peto & Radford concerning the output of 20 HP dynamos and their effect on battery life, including photostat curves. | 21th Aug 1923 | Box 51 \ 1 Scan215 | |
| Page 2 of a letter discussing chassis dynamos and production specifications. | 20th Aug 1923 | Box 51 \ 1 Scan216 | |
| Graph of the average output curve for a 20HP chassis dynamo at 82°C. | 20th Aug 1923 | Box 51 \ 1 Scan217 | |
| Instructions for a chassis dynamo testing programme involving multiple dynamos and engines. | 22th Aug 1923 | Box 51 \ 1 Scan218 | |
| Instructions for fitting various brushes to dynamos on chassis. | 6th Nov 1918 | Box 51 \ 1 Scan219 | |
| Test report on the effect of current density on the brushes of a Goshawk dynamo running at reduced output. | 18th Aug 1923 | Box 51 \ 1 Scan220 | |
| The transfer of a Goshawk dynamo between different engines. | 29th Aug 1923 | Box 51 \ 1 Scan221 | |
| Letter from Peto & Radford regarding the charging curve and overcharging of batteries for the 20 HP car. | 30th Aug 1923 | Box 51 \ 1 Scan222 | |
| Requesting a modification to a Goshawk dynamo to update the brush position. | 3rd Sep 1923 | Box 51 \ 1 Scan223 | |
| List of standard temperatures in degrees Celsius for sentinels. | 3rd Sep 1923 | Box 51 \ 1 Scan224 | |
| The operating temperatures of a dynamo, ignition coil, and condenser, measured using fusible metal sentinels. | 4th Sep 1923 | Box 51 \ 1 Scan225 | |
| Dynamo output curves for a 20 HP chassis. | 5th Sep 1923 | Box 51 \ 1 Scan226 | |
| Listing blueprints for the X.4383 Dynamo and its components, with a request to begin production. | 5th Sep 1923 | Box 51 \ 1 Scan227 | |
| 20-HP Dynamo failure on chassis 55-S-O, requesting an investigation into the cause. | 7th Sep 1923 | Box 51 \ 1 Scan228 | |
| Listing blueprints for Dynamo components being sent to complete the machine. | 7th Sep 1923 | Box 51 \ 1 Scan229 | |
| Repair and replacement of brush gear on Goshawk dynamos. | 12th Sep 1923 | Box 51 \ 1 Scan230 | |
| Follow-up memo regarding the Goshawk Dynamo and Distribution Box. | 12th Sep 1923 | Box 51 \ 1 Scan231 | |
| The mileage and maintenance of a Goshawk dynamo fitted to vehicle 49-GB. | 12th Sep 1923 | Box 51 \ 1 Scan232 | |
| Instructions regarding changes to the 20 HP dynamo and distribution box connections. | 12th Sep 1923 | Box 51 \ 1 Scan233 | |
| Blueprint for a Dynamo Winding Diagram. | 14th Sep 1923 | Box 51 \ 1 Scan234 | |
| Status report on several Goshawk dynamos awaiting testing in the electrical laboratory. | 19th Sep 1923 | Box 51 \ 1 Scan235 | |
| Investigation of a noisy Goshawk dynamo, No. 562. | 19th Sep 1923 | Box 51 \ 1 Scan236 | |
| Dispatch of Goshawk dynamo No. 562 for investigation and a request for a replacement. | 19th Sep 1923 | Box 51 \ 1 Scan237 | |
| The fitting of a Goshawk Dynamo to a specific chassis. | 20th Sep 1923 | Box 51 \ 1 Scan238 | |
| Inquiry about the progress of electrical work on the Goshawk II dynamo, specifically its brushes and commutator. | 20th Sep 1923 | Box 51 \ 1 Scan239 | |
| List of experiments for Goshawk dynamos to be fitted to the 20 HP chassis. | 21th Sep 1923 | Box 51 \ 1 Scan240 | |
| The melting status of Dynamo Sentinels on various models. | 22th Sep 1923 | Box 51 \ 1 Scan241 | |
| Commutation issues and brush surface wear in the Goshawk dynamo. | 23th Sep 1923 | Box 51 \ 1 Scan242 | |
| Performance and manufacturing considerations for Goshawk and E.A.C. dynamos. | 26th Sep 1923 | Box 51 \ 1 Scan243 | |
| The trial of a new Dynamo Commutator Assembly with reduced micas. | 26th Sep 1923 | Box 51 \ 1 Scan244 | |
| Test report on the Goshawk Dynamo's performance when run on an open circuit. | 27th Sep 1923 | Box 51 \ 1 Scan245 | |
| Test results with a data table for speed, voltage, amperage, resistance, and temperature. | 6th Nov 1918 | Box 51 \ 1 Scan246 | |
| Instructions and test results for a dynamo, detailing its temperature and electrical characteristics. | 6th Nov 1918 | Box 51 \ 1 Scan247 | |
| Weakness of the third brush control system in 20 HP dynamos, leading to overheating. | 27th Sep 1923 | Box 51 \ 1 Scan248 | |
| Dynamo overheating issues, focusing on brush contact and reliability. | 27th Sep 1923 | Box 51 \ 1 Scan249 | |
| Test report on the behaviour of a 20 HP dynamo when excited but unloaded. | 28th Sep 1923 | Box 51 \ 1 Scan250 | |
| Test results and temperature analysis for a dynamo at various rotational speeds. | 28th Sep 1923 | Box 51 \ 1 Scan251 | |
| Dynamo temperature tests, noting the carcase temperature that corresponds to the melting point of solder on the commutator. | 28th Sep 1923 | Box 51 \ 1 Scan252 | |
| Tests on variations of brush bedding in 20 HP dynamos to discover the range of output and heating. | 1st Oct 1923 | Box 51 \ 1 Scan253 | |
| The performance of main and control brush positions at various temperatures and speeds. | 10th Oct 1923 | Box 51 \ 1 Scan254 | |
| Analysis of dynamo failures, specifically investigating variations in brush bedding and its effect on output. | 1st Oct 1923 | Box 51 \ 1 Scan255 | |
| Analysis of the forces and frictional effects on a brush within its holder and on the commutator. | 1st Oct 1923 | Box 51 \ 1 Scan256 | |
| The design of a brush holder, including a 15-degree inclination to counteract friction, inspired by a Canning dynamo. | 1st Oct 1923 | Box 51 \ 1 Scan257 | |
| Altering dynamo brushes and addressing issues of overheated armatures due to over-excitation. | 1st Oct 1923 | Box 51 \ 1 Scan258 | |
| Analysis of fuse wire specifications and performance for dynamo protection against over-excitation. | 11th Oct 1923 | Box 51 \ 1 Scan259 | |
| Fuse design and safety, proposing a user-friendly glass tube fuse with brass ferrules for customers. | 1st Oct 1923 | Box 51 \ 1 Scan260 | |
| List of experiments and modifications for a Goshawk dynamo to be run on an experimental chassis. | 4th Oct 1923 | Box 51 \ 1 Scan261 | |
| Modification and fitting of a Goshawk dynamo for experimentation. | 4th Oct 1923 | Box 51 \ 1 Scan262 | |
| Goshawk dynamo experiments and modifications to reduce hum. | 8th Oct 1923 | Box 51 \ 1 Scan263 | |
| Confirming modifications for 20 HP dynamo experiments, including undercutting commutators and testing new brushes. | 11th Oct 1923 | Box 51 \ 1 Scan264 | |
| Modifications and noise experiments on a Goshawk dynamo. | 11th Oct 1923 | Box 51 \ 1 Scan265 | |
| List of dynamos fitted to various chassis, detailing modifications and test status. | 11th Oct 1923 | Box 51 \ 1 Scan266 | |
| Failures with 20-HP dynamos and proposing solutions. | 11th Oct 1923 | Box 51 \ 1 Scan267 | |
| Modification to a Dynamo, requiring a new blueprint for a special Magnet Case. | 12th Oct 1923 | Box 51 \ 1 Scan268 | |
| Requesting the fitting of a specific Goshawk dynamo to another vehicle for laboratory testing. | 12th Oct 1923 | Box 51 \ 1 Scan269 | |
| On experiments with a Goshawk Dynamo, identifying a fault condition caused by a sticking negative brush. | 12th Oct 1923 | Box 51 \ 1 Scan270 | |
| Experiment report on the effect of a sticking negative brush on a Goshawk dynamo. | 4th Oct 1923 | Box 51 \ 1 Scan271 | |
| Further overheating tests of a Goshawk dynamo. | 10th Oct 1923 | Box 51 \ 1 Scan272 | |
| Modifications to a Goshawk dynamo to reduce noise and the resulting impact on its output. | 15th Oct 1923 | Box 51 \ 1 Scan273 | |
| Confirming the removal of a dynamo from a GI chassis for a brush material experiment on a Goshawk engine. | 15th Oct 1923 | Box 51 \ 1 Scan274 | |
| Confirming the transfer of a Goshawk dynamo from a Gos:I chassis. | 16th Oct 1923 | Box 51 \ 1 Scan275 | |
| Modification of a noisy Goshawk dynamo with a cast iron end plate. | 18th Oct 1923 | Box 51 \ 1 Scan276 | |
| Modifications to Goshawk Dynamo No.470, which was refitted to chassis 6-GII. | 18th Oct 1923 | Box 51 \ 1 Scan277 | |
| Requesting the soldering of commutator connections for a Goshawk Dynamo armature returned from a customer's car. | 18th Oct 1923 | Box 51 \ 1 Scan278 | |
| Ongoing noise from a Goshawk dynamo on chassis 3-GII, suspecting a bearing issue and requesting a replacement. | 18th Oct 1923 | Box 51 \ 1 Scan279 | |
| Requesting the removal and modification of a Goshawk dynamo from chassis 5GII. | 22th Oct 1923 | Box 51 \ 1 Scan280 | |
| Requesting the commutator of a Goshawk dynamo armature be undercut using a new method. | 24th Oct 1923 | Box 51 \ 1 Scan281 | |
| Noise investigation on a Goshawk dynamo, suggesting tight bearings as the likely cause. | 25th Oct 1923 | Box 51 \ 1 Scan282 | |
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