| Description | Date | Identifier | |
| Instruction from the Test Department to replace a dynamo which failed testing due to being too noisy. | 26th Oct 1923 | Box 51 \ 1 Scan283 | |
| Replacement of a noisy Goshawk dynamo with an updated experimental model. | 26th Oct 1923 | Box 51 \ 1 Scan284 | |
| Tests on Goshawk dynamos to reduce noise and improve commutation performance. | 27th Oct 1923 | Box 51 \ 1 Scan285 | |
| Return of Goshawk Dynamo X after being fitted with experimental EGO Morganite brushes. | 27th Oct 1923 | Box 51 \ 1 Scan286 | |
| Instruction to refurbish a received dynamo that has incorrect parts to meet current production standards. | 29th Oct 1923 | Box 51 \ 1 Scan287 | |
| Replacement and re-designation of Goshawk dynamos. | 30th Oct 1923 | Box 51 \ 1 Scan288 | |
| Troubleshooting and trial of noisy Goshawk dynamos. | 30th Oct 1923 | Box 51 \ 1 Scan289 | |
| Removal and modification of dynamo 'F' from vehicle 49-GB. | 30th Oct 1923 | Box 51 \ 1 Scan290 | |
| Investigation into a charred coil on a Goshawk dynamo armature due to carbon lodging between commutator segments. | 31th Oct 1923 | Box 51 \ 1 Scan291 | |
| Test report on a noisy 20-HP Dynamo No. 603A after fitting a new end bracket. | 31th Oct 1923 | Box 51 \ 1 Scan292 | |
| Experimental dynamo list detailing modifications and test statuses for various models. | 1st Nov 1923 | Box 51 \ 1 Scan293 | |
| Swapping Goshawk dynamos R.3 and No.604 on chassis 7GII for a noise test. | 11th Nov 1923 | Box 51 \ 1 Scan294 | |
| Experimental work on Goshawk dynamos to reduce noise and improve commutation. | 11th Nov 1923 | Box 51 \ 1 Scan295 | |
| The testing of bevelled brushes and commutator undercutting methods on experimental Goshawk cars and dynamos. | 1st Nov 1923 | Box 51 \ 1 Scan296 | |
| Tests comparing machine brushes for wear and noise, and experiments with armatures to improve commutation and reduce dynamo noise. | 11th Nov 1923 | Box 51 \ 1 Scan297 | |
| The causes and potential fixes for dynamo noise, specifically relating to bearing tightness and end brackets. | 11th Nov 1923 | Box 51 \ 1 Scan298 | |
| From R. to EFC discussing progress and suggesting improvements for the Goshawk Dynamo. | 12th Nov 1923 | Box 51 \ 1 Scan299 | |
| Issues with noisy dynamos and potential solutions. | 13th Nov 1923 | Box 51 \ 1 Scan300 | |
| Replacement and noise testing of Goshawk dynamos on chassis 3GII. | 13th Nov 1923 | Box 51 \ 1 Scan301 | |
| Improvements made to Goshawk dynamos and a comparison of brush materials. | 14th Nov 1923 | Box 51 \ 1 Scan302 | |
| The performance and resistance of various generator brush materials. | 14th Nov 1923 | Box 51 \ 1 Scan303 | |
| Improvements in commutation, noise reduction challenges, and further dynamo bench tests. | 14th Nov 1923 | Box 51 \ 1 Scan304 | |
| Confirming a request for cross-sectional drawings of Goshawk and E.A.C. dynamos. | 15th Nov 1923 | Box 51 \ 1 Scan305 | |
| Query regarding the number of turns per field coil for Goshawk dynamos. | 16th Nov 1923 | Box 51 \ 1 Scan306 | |
| Confirming the coil winding specifications for the 20 HP Chassis Dynamo. | 16th Nov 1923 | Box 51 \ 1 Scan307 | |
| Noisiness and magnetic circuit irregularities in Goshawk Dynamo No. 625, requesting further tests. | 21th Nov 1923 | Box 51 \ 1 Scan308 | |
| Requesting to swap a dynamo on chassis 3GII as part of dynamo noise experiments. | 22th Nov 1923 | Box 51 \ 1 Scan309 | |
| Testing of a Goshawk dynamo, requesting a straight slotted armature be installed for magnetic drag tests. | 26th Nov 1923 | Box 51 \ 1 Scan310 | |
| Defining the conditions for standard dynamo output curves. | 27th Nov 1923 | Box 51 \ 1 Scan311 | |
| Technical note regarding adjustments to the control brush for a specific output curve. | 30th Nov 1923 | Box 51 \ 1 Scan312 | |
| Dynamo noise experiments, returning the noisy dynamo No.604 for comparison testing on a car. | 30th Nov 1923 | Box 51 \ 1 Scan313 | |
| Cause of noise in the Goshawk dynamo. | 30th Nov 1923 | Box 51 \ 1 Scan314 | |
| Test for machine noisiness and the conclusion that it is independent of the cast iron end brackets. | 30th Nov 1923 | Box 51 \ 1 Scan315 | |
| The replacement of a noisy Goshawk dynamo due to noise issues. | 5th Dec 1923 | Box 51 \ 1 Scan316 | |
| The performance and melting points of various temperature sentinels on different chassis. | 5th Dec 1923 | Box 51 \ 1 Scan317 | |
| Providing instructions for fitting and testing new armatures on Goshawk B and Goshawk E dynamos. | 12th Dec 1923 | Box 51 \ 1 Scan318 | |
| Brush and pole positions for Goshawk & EAC dynamos. | 6th Dec 1923 | Box 51 \ 1 Scan319 | |
| Evidence for standardising a 40 S.W.G. copper field fuse for Goshawk & E.A.C. models. | 12th Dec 1923 | Box 51 \ 1 Scan320 | |
| Receiving dynamo E to be fitted with a two coil per slot armature for the Goshawk project. | 13th Dec 1923 | Box 51 \ 1 Scan321 | |
| Requesting the temporary replacement of a noisy Goshawk dynamo on engine 3GII. | 14th Dec 1923 | Box 51 \ 1 Scan322 | |
| The arrangement of a field fuse for a Goshawk engine to suit a customer. | 28th Dec 1923 | Box 51 \ 1 Scan323 | |
| Index table of 40/50 HP and 20 HP dynamo curves. | 26th Dec 1923 | Box 51 \ 1 Scan324 | |
| Requesting the re-soldering of connections to a commutator for a customer's Goshawk Dynamo armature. | 31th Dec 1923 | Box 51 \ 1 Scan325 | |
| Inspection report on the condition of four chassis dynamos after road testing. | 7th Jan 1924 | Box 51 \ 1 Scan326 | |
| Performance and potential alternatives for Goshawk dynamo brushes. | 9th Jan 1924 | Box 51 \ 1 Scan327 | |
| Inspection report on a Dynamo R3 on a 7GII, detailing mileage, brush and commutator condition. | 7th Jan 1924 | Box 51 \ 1 Scan328 | |
| Experimental Goshawk Dynamo list detailing various modifications and test results. | 23th Jan 1924 | Box 51 \ 1 Scan329 | |
| Replacement of a 20 HP dynamo for examination after completing 5,000 miles. | 28th Jan 1924 | Box 51 \ 1 Scan330 | |
| From EFC to RHC chasing the return of a Dynamo R.3 taken from chassis 7-G-11. | 4th Feb 1924 | Box 51 \ 1 Scan331 | |
| Telegram confirming the proposal to use a Goshawk dynamo as an alternative to a Lucas dynamo for EAC 3. | 9th Feb 1924 | Box 51 \ 1 Scan332 | |
| Secret memo discussing the suitability of the Goshawk dynamo for the EAC chassis, comparing its performance to the standard Lucas machine. | 1st Feb 1924 | Box 51 \ 1 Scan333 | |
| Internal correspondence regarding the use of a Goshawk dynamo as an alternative to a Lucas part. | 16th Feb 1924 | Box 51 \ 1 Scan334 | |
| Pair of telegrams discussing the comparative performance of a Goshawk dynamo versus a Lucas alternative. | 9th Feb 1924 | Box 51 \ 1 Scan335 | |
| Secret memo discussing the suitability of a Goshawk dynamo for the EAC.111 chassis. | 19th Feb 1924 | Box 51 \ 1 Scan336 | |
| The fit and replacement of ball bearings for 20HP dynamos. | 19th Feb 1934 | Box 51 \ 1 Scan337 | |
| Requesting the fitting of a new Goshawk Dynamo to chassis 4-G-11 and the return of the old one. | 23th Feb 1924 | Box 51 \ 1 Scan338 | |
| Secret internal memo discussing improvements to dynamo output and potential overheating issues. | 23th Feb 1924 | Box 51 \ 1 Scan339 | |
| Investigation into the noisiness of Goshawk dynamos, particularly those fitted with specific armatures. | 29th Apr 1924 | Box 51 \ 1 Scan340 | |
| Proposed modifications to dynamo pole pieces to reduce noise. | 29th Feb 1924 | Box 51 \ 1 Scan341 | |
| Noise tests conducted on Goshawk dynamos to analyze the effect of different armature configurations. | 20th Feb 1924 | Box 51 \ 1 Scan342 | |
| Requesting the removal of a Goshawk dynamo for a general report on commutation. | 29th Feb 1924 | Box 51 \ 1 Scan343 | |
| Confirming the replacement of a 20 HP dynamo for a 10,000-mile test and discussing required modifications to new brush gear. | 4th Mar 1924 | Box 51 \ 1 Scan344 | |
| Test results for a Goshawk Dynamo's output at below freezing point. | 5th Mar 1924 | Box 51 \ 1 Scan345 | |
| Defining the specifications and testing procedures for chassis dynamo output performance, particularly for the 20 HP model. | 3rd Mar 1924 | Box 51 \ 1 Scan346 | |
| Continuation of a document discussing dynamo temperature testing and production specifications. | 3rd Mar 1924 | Box 51 \ 1 Scan347 | |
| The comparison of dynamo output curves under various engine temperature and test conditions. | 3rd Mar 1924 | Box 51 \ 1 Scan348 | |
| Technical comparison of dynamo performance curves for the 40/50 HP chassis, contrasting Lucas, EAC, and RR 20 HP models. | 3rd Mar 1924 | Box 51 \ 1 Scan349 | |
| Report page discussing the characteristics and performance of dynamos, specifically for the 20 HP engine. | 3rd Mar 1924 | Box 51 \ 1 Scan350 | |
| Revised specification for the electrical operation of a 12-volt dynamo for the Goshawk engine. | 4th Mar 1924 | Box 51 \ 1 Scan351 | |
| Specification sheet outlining the minimum performance and physical constraints for a dynamo. | 8th Mar 1924 | Box 51 \ 1 Scan352 | |
| Specification for the inspection and testing of the Goshawk Dynamo. | 8th Mar 1924 | Box 51 \ 1 Scan353 | |
| Page of instructions outlining the testing procedures for a dynamo. | 8th Mar 1924 | Box 51 \ 1 Scan354 | |
| Instructions for examining and testing a machine's armature, bearings, and insulation. | 15th May 1928 | Box 51 \ 1 Scan355 | |
| Graph comparing the ampere output curves of RR 20 HP and Lucas E.575 dynamos under hot conditions. | 15th May 1928 | Box 51 \ 1 Scan356 | |
| Test report on a Dynamo D from chassis 40II after 5513 miles of use. | 4th Mar 1924 | Box 51 \ 1 Scan357 | |
| Specification of inspection and test procedures for the Goshawk Dynamo. | 5th Mar 1924 | Box 51 \ 1 Scan358 | |
| Continuation of dynamo testing procedures, detailing load, voltage, and performance checks. | 5th Mar 1924 | Box 51 \ 1 Scan359 | |
| Continuation of inspection and testing procedures for machine insulation and components. | 5th Jul 1924 | Box 51 \ 1 Scan360 | |
| Graph of comparative ampere output curves for R.R. 20 HP and Lucas E.575 dynamos under hot conditions. | 5th Jul 1924 | Box 51 \ 1 Scan361 | |
| Test report on the Goshawk dynamo No.604's output at below-freezing point. | 5th Mar 1924 | Box 51 \ 1 Scan362 | |
| Output performance and test specifications of a 20 HP dynamo. | 13th Mar 1924 | Box 51 \ 1 Scan363 | |
| Continued page discussing modifications and performance of a 20 HP dynamo. | 18th Aug 1924 | Box 51 \ 1 Scan364 | |
| Graph showing representative output curves for a Standard 'R' 20 HP Dynamo under various conditions. | 18th Aug 1924 | Box 51 \ 1 Scan365 | |
| From EFC to RHC asking for an update on the replacement of a cast iron end bracket on Goshawk Dynamo No. 625. | 18th Mar 1924 | Box 51 \ 1 Scan366 | |
| Modifications to a 20 HP Dynamo Commutator, specifying the use of annealed copper and 57 segments. | 4th Apr 1924 | Box 51 \ 1 Scan367 | |
| Return of dynamo No. 836 to production. | 4th Apr 1924 | Box 51 \ 1 Scan368 | |
| Instructions and results for a test on the effect of 20 HP dynamo end-play. | 11th Apr 1924 | Box 51 \ 1 Scan369 | |
| Report detailing production test results for an electrical component, including voltage and amperage outputs under load. | 29th Jun 1920 | Box 51 \ 1 Scan370 | |
| Requesting the fitting of wires for dynamo sentinels with a specific melting point. | 24th Apr 1924 | Box 51 \ 1 Scan371 | |
| The inspection and testing of a 20 HP Dynamo, number 917. | 4th May 1924 | Box 51 \ 1 Scan372 | |
| Inspection report on a 20 HP Dynamo No. 917 detailing its running qualities and minor faults. | 20th May 1924 | Box 51 \ 1 Scan373 | |
| Experimental dynamo record sheet for a 20 HP engine. | 26th Jul 1923 | Box 51 \ 1 Scan374 | |
| Record sheet for the testing and inspection of experimental dynamo number 438. | 7th Nov 1923 | Box 51 \ 1 Scan375 | |
| Test log sheet for a Goshawk dynamo, recording performance data. | 6th Jun 1924 | Box 51 \ 1 Scan376 | |
| Test log sheet for a Goshawk Dynamo, detailing performance under various conditions. | 6th Jun 1924 | Box 51 \ 1 Scan377 | |
| Test results log for a Coshank Dynamo, detailing performance under cold and warm conditions. | 6th Jun 1924 | Box 51 \ 1 Scan378 | |
| Log sheet detailing the testing and particulars of Goshawk dynamos and others from June to August 1922. | 5th Jun 1924 | Box 51 \ 1 Scan379 | |
| Log sheet detailing the testing, status, and modifications of various components. | 1st Feb 1923 | Box 51 \ 1 Scan380 | |
| Log sheet detailing tests, modifications, and repairs on various electrical components. | 26th Feb 1923 | Box 51 \ 1 Scan381 | |
| Log sheet detailing inspection, testing, and repair work on various components between June and September 1923. | 25th Sep 1923 | Box 51 \ 1 Scan382 | |
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