| Description | Date | Identifier | |
| Extract from Mr. Hancock's report on vehicle 23-EX after 5,000 miles, focusing on the dynamo. | 4th May 1930 | Box 60 \ 1 Scan226 | |
| The arrangement and exposure of motor and dynamo terminals on Phantom and 20/25 HP models. | 14th May 1930 | Box 60 \ 1 Scan227 | |
| Extract from Mr. Hancock's report on the dynamo of vehicle 23-EX after a 9,000-mile test. | 21th May 1930 | Box 60 \ 1 Scan228 | |
| Investigation of a finer field winding on a 43 coil medium output type dynamo. | 21th May 1930 | Box 60 \ 1 Scan229 | |
| Performance comparison report on a machine with finer winding versus a standard machine. | 1st Dec 1924 | Box 60 \ 1 Scan230 | |
| Request to modify a 48 coil armature dynamo by increasing the concentric air gap for testing purposes. | 26th May 1930 | Box 60 \ 1 Scan231 | |
| Urging the production of two Phantom II high output 48 coil armature dynamos for further testing. | 26th May 1930 | Box 60 \ 1 Scan232 | |
| Requesting to fit temperature indicating sentinels to Phantom dynamos during routine road tests. | 26th May 1930 | Box 60 \ 1 Scan233 | |
| Handover of an experimental medium output dynamo for testing. | 28th May 1930 | Box 60 \ 1 Scan234 | |
| Suggesting improvements to the protection of dynamo wiring, using flexible brass or metallic tubing. | 29th May 1930 | Box 60 \ 1 Scan235 | |
| Instruction sheet detailing tests conducted on 40/50 dynamo brush noise. | 5th Jun 1930 | Box 60 \ 1 Scan236 | |
| Instructions detailing experiments on commutator brushes and holders to reduce vibration and friction. | 8th Dec 1924 | Box 60 \ 1 Scan237 | |
| Instructions detailing a preliminary experiment on a special brush-holder and findings on commutator skimming to reduce brush noise. | 8th Dec 1924 | Box 60 \ 1 Scan238 | |
| Instruction sheet detailing tests on lubricated and graphitic brushes to reduce shrieking. | 25th Nov 1929 | Box 60 \ 1 Scan239 | |
| Instruction sheet detailing experiments with special holders, springs, and brushes. | 25th Nov 1929 | Box 60 \ 1 Scan240 | |
| Instructions for an investigation into a new grade of brush, spring pressure, and commutator surfaces to reduce noise. | 2nd Jun 1930 | Box 60 \ 1 Scan241 | |
| Request to manufacture one dozen Dynamo Temperature Indicating Sentinels with a specific melting point. | 2nd Jun 1930 | Box 60 \ 1 Scan242 | |
| Control brush position and output issues for 40-50 HP higher-output dynamos. | 2nd Jul 1930 | Box 60 \ 1 Scan243 | |
| Issue with the output of 40/50 HP high output dynamos and arranging for a trial. | 3rd Jul 1930 | Box 60 \ 1 Scan244 | |
| Requesting the skimming of a dynamo commutator due to noisy brushes and surface irregularity. | 7th Jul 1930 | Box 60 \ 1 Scan245 | |
| Extract from C.W. Hancock's report on the dynamo output and condition on chassis 24-EX at 6,000 miles. | 20th Jul 1930 | Box 60 \ 1 Scan246 | |
| Request to modify the armature connections for a Standard Phantom II dynamo. | 2nd Aug 1930 | Box 60 \ 1 Scan247 | |
| Requesting road and bench testing for a Dynamo IO.1M on chassis 23-EX. | 3rd Aug 1930 | Box 60 \ 1 Scan248 | |
| Extract from G.W. Hancock's report on the failure of a dynamo on vehicle 24-EX at 10,000 miles. | 15th Aug 1930 | Box 60 \ 1 Scan249 | |
| Lamp specifications for car 24-EX and reporting a dynamo failure. | 19th Aug 1930 | Box 60 \ 1 Scan250 | |
| Instructions regarding the failure and subsequent testing of a 48 Coil High Output Dynamo. | 25th Aug 1930 | Box 60 \ 1 Scan251 | |
| Inspection report on a faulty machine detailing the cause of severe flashing. | 25th Aug 1930 | Box 60 \ 1 Scan252 | |
| The investigation of commutator and armature issues causing charging failure and clicking noises. | 26th Aug 1930 | Box 60 \ 1 Scan253 | |
| Failed 48 coil armature from dynamo 24-EX being sent for stripping and rewinding. | 26th Aug 1930 | Box 60 \ 1 Scan254 | |
| Advising on the re-winding or replacement of a Phantom Dynamo armature for chassis 25-EX ahead of a 10,000-mile test. | 26th Aug 1930 | Box 60 \ 1 Scan255 | |
| Explaining the cause of a dynamo armature failure on chassis 24-EX during a 10,000-mile test. | 26th Aug 1930 | Box 60 \ 1 Scan256 | |
| Urging the completion of work on a 48 coil dynamo armature for vehicle 25-EX. | 29th Aug 1930 | Box 60 \ 1 Scan257 | |
| Road test report on a 48 coil high output dynamo and reduced charge scheme. | 29th Aug 1930 | Box 60 \ 1 Scan258 | |
| Instructions and observations from a test on dynamo output under different lamp loads. | 8th Dec 1924 | Box 60 \ 1 Scan259 | |
| Proposal for a new scheme to lubricate the dynamo on the Phantom II & 25 HP models. | 30th Aug 1930 | Box 60 \ 1 Scan260 | |
| Comparing a quotation for sample carbon brushes from British Carbons with current prices. | 12th Sep 1930 | Box 60 \ 1 Scan261 | |
| Standardisation of a 48 coil armature dynamo with pole piece modification for high output. | 18th Jun 1930 | Box 60 \ 1 Scan262 | |
| Requesting a road test for a 48-coil high-output dynamo on the 24-EX experimental car. | 15th Sep 1930 | Box 60 \ 1 Scan263 | |
| Specification sheet for standard carbon brushes used in various vehicle components and models. | 15th Sep 1930 | Box 60 \ 1 Scan264 | |
| Electrical experimental record sheet logging mileage for a test on Morganite Brushes. | 20th Feb 1930 | Box 60 \ 1 Scan265 | |
| Specifying the brush angle for a 40/50 48-coil high output dynamo and requesting production samples for testing. | 2nd Oct 1930 | Box 60 \ 1 Scan266 | |
| Requesting an explanation for electrical equipment failures on a left-hand chassis following a 10,000-mile test. | 6th Oct 1930 | Box 60 \ 1 Scan267 | |
| The failure of a battery and dynamo following a 10,000-mile test on a 24-EX vehicle. | 6th Oct 1930 | Box 60 \ 1 Scan268 | |
| Failure analysis report on a dynamo and cutout unit following a 10,000-mile test, continued on page 2. | 6th Oct 1930 | Box 60 \ 1 Scan269 | |
| Request to arrange for the check-testing of 48-coil dynamos for 'N2b' Series and L.H.S.S. Chassis. | 7th Oct 1930 | Box 60 \ 1 Scan270 | |
| Requesting to fit a 48 coil high output dynamo with special Morganite brushes to chassis 23-EX for testing. | 10th Oct 1930 | Box 60 \ 1 Scan271 | |
| Modification of 56 coil armature dynamos into 48 coil high output machines. | 15th Oct 1930 | Box 60 \ 1 Scan272 | |
| Request for two 48 coil armatures to replace existing 56 coil armatures for dynamo performance experiments. | 16th Oct 1930 | Box 60 \ 1 Scan273 | |
| Performance comparison log for various dynamo models. | 19th Jun 1930 | Box 60 \ 1 Scan274 | |
| Performance comparison table for various dynamo models based on a routine procedure. | 1st Apr 1927 | Box 60 \ 1 Scan275 | |
| Performance comparison table for various dynamos, based on a routine procedure. | 1st Apr 1927 | Box 60 \ 1 Scan276 | |
| Specification for the inspection and testing of a 40/50 HP high output dynamo with a 48 coil armature. | 25th Oct 1930 | Box 60 \ 1 Scan277 | |
| Instructions for inspecting springs and testing dynamo insulation and brush bedding, continued on page 2. | 25th Oct 1930 | Box 60 \ 1 Scan278 | |
| Instructions for checking and rectifying a noisy dynamo, including brush bedding and output testing procedures. | 25th Oct 1930 | Box 60 \ 1 Scan279 | |
| Dynamo testing procedures, including running at speed, checking for vibration, and insulation testing. | 27th Oct 1930 | Box 60 \ 1 Scan280 | |
| Inspection and test specification for a Phantom II high output dynamo with a 48 coil armature. | 27th Oct 1930 | Box 60 \ 1 Scan281 | |
| The examination and bench testing of a 48 Coil High Output Dynamo, model I.O.I.M. | 29th Oct 1930 | Box 60 \ 1 Scan282 | |
| The examination and testing of a 48 coil high output dynamo from chassis 23-EX after completing 18,674 miles. | 3rd Nov 1930 | Box 60 \ 1 Scan283 | |
| Confirming the dispatch and completion of an order for various dynamo types. | 5th Nov 1930 | Box 60 \ 1 Scan284 | |
| Replacement of field windings on a Phantom Dynamo S.S.X. | 2nd Nov 1930 | Box 60 \ 1 Scan285 | |
| Request to service a 48 coil dynamo S.S.X. by skimming the commutator to fix sparking and uneven output. | 4th Nov 1930 | Box 60 \ 1 Scan286 | |
| Request from Malcolm Campbell for a higher output dynamo to resolve issues with his car's lamps. | 19th Nov 1930 | Box 60 \ 1 Scan287 | |
| Production test log for Phantom II type dynamo machines with 56 coil armatures, recording output, volts, and brush settings. | 14th May 1929 | Box 60 \ 1 Scan288 | |
| Higher output dynamo for a customer named Malcolm Campbell, comparing a new 48 coil machine to an older one. | 20th Nov 1930 | Box 60 \ 1 Scan289 | |
| Request to skim a worn dynamo commutator for a Phantom 48 coil dynamo in preparation for a test. | 25th Nov 1930 | Box 60 \ 1 Scan290 | |
| Replacement of a Phantom II dynamo on car 20-EX after a 10,000-mile test. | 1st Dec 1930 | Box 60 \ 1 Scan291 | |
| Request to remove a 48 coil high output dynamo from vehicle 23-EX. | 10th Dec 1930 | Box 60 \ 1 Scan292 | |
| Technical note discussing improvements to the performance characteristics of car dynamos. | 13th Dec 1930 | Box 60 \ 1 Scan293 | |
| Test report on Morganite E.G.O dynamo brushes following bench and road testing. | 16th Dec 1930 | Box 60 \ 1 Scan294 | |
| The condition and performance of brushes, including a table of wear measurements. | 8th Dec 1924 | Box 60 \ 1 Scan295 | |
| The decision to proceed with a half-charge dynamo scheme using a 6-inch resistance. | 16th Dec 1930 | Box 60 \ 1 Scan296 | |
| High output dynamos and the two-rate charge scheme. | 18th Dec 1930 | Box 60 \ 1 Scan297 | |
| Dynamo limitations, battery charging schemes, and potential improvements to the system. | 18th Dec 1930 | Box 60 \ 1 Scan298 | |
| Reference note regarding production tests of 20/25 electrical components. | 1st Jan 1931 | Box 60 \ 2 Scan001 | |
| Cover note for updated production inspection and test specification pages for a distribution box and cutout. | 6th Oct 1931 | Box 60 \ 2 Scan002 | |
| Production inspection, adjustment, and test specification for the distribution box and cutout on 40/50 and 20/25 HP cars. | 16th Oct 1931 | Box 60 \ 2 Scan003 | |
| Test procedure for a dynamo and distribution box, detailing cold condition operation and charging current tests. | 16th Oct 1931 | Box 60 \ 2 Scan004 | |
| Procedure for testing the falling away point of a dynamo cutout by reducing speed and observing an ammeter. | 16th Oct 1931 | Box 60 \ 2 Scan005 | |
| Hand-drawn wiring diagram for a distribution box and cutout test. | 6th Oct 1931 | Box 60 \ 2 Scan006 | |
| Cover letter for the production inspection and test specification of a Dynamo Field Resistance Unit. | 6th Oct 1931 | Box 60 \ 2 Scan007 | |
| Production inspection and testing procedure for a 40/50 and 20/25 Dynamo Field Resistance Unit. | 16th Oct 1931 | Box 60 \ 2 Scan008 | |
| Cover memo for the production test specification of a 20/25 HP Dynamo. | 22th Oct 1931 | Box 60 \ 2 Scan009 | |
| Specification of a running test for a 20/25 HP Dynamo. | 22th Oct 1931 | Box 60 \ 2 Scan010 | |
| Cover note for the Production Test Specification for a 20/25 Switchbox. | 20th Oct 1931 | Box 60 \ 2 Scan011 | |
| Specification document detailing the testing procedure for a 20/25 switchbox. | 16th Oct 1931 | Box 60 \ 2 Scan012 | |
| Page of a test procedure for an electrical component, detailing switch and terminal checks. | 26th Apr 1932 | Box 60 \ 2 Scan013 | |
| Covering memo for a revised production specification for the running test of the 20/25 dynamo. | 26th Apr 1932 | Box 60 \ 2 Scan014 | |
| Specification for the running test of a 20/25 HP dynamo. | 22th Apr 1932 | Box 60 \ 2 Scan015 | |
| Production inspection and test specification for the 20/25 starter motor with Bijur Bendix drive. | 7th Mar 1931 | Box 60 \ 2 Scan016 | |
| Specification document for the test and inspection of a 20/25 starter motor with a Bijur Bendix drive. | 9th Mar 1931 | Box 60 \ 2 Scan017 | |
| Attaching the specification for a running test of a 20/25 HP dynamo. | 2nd May 1931 | Box 60 \ 2 Scan018 | |
| Specification for the running test of a 20/25 HP dynamo. | 12th May 1931 | Box 60 \ 2 Scan019 | |
| Revised production specification for a condenser used in 20/25 and 40/50 battery ignition systems. | 11th May 1933 | Box 60 \ 2 Scan020 | |
| Production testing procedure for a paraffin waxed paper dielectric condenser for battery ignition. | 11th May 1933 | Box 60 \ 2 Scan021 | |
| List of testing procedures for a condenser, page 2. | 1st Jan 1931 | Box 60 \ 2 Scan022 | |
| Reference note for previous documents concerning production tests of 40/50 electrical components. | 1st Jan 1931 | Box 60 \ 2 Scan023 | |
| Attaching updated specification pages for the Distribution Box and Cutout on Phantom II and 20/25 models. | 6th Oct 1931 | Box 60 \ 2 Scan024 | |
| Specification for production inspection, adjustment, and testing of a distribution box and cutout for 40/50 and 20/25 HP cars. | 16th Oct 1931 | Box 60 \ 2 Scan025 | |
| Testing procedure for a dynamo and distribution box under specific electrical conditions. | 16th Oct 1931 | Box 60 \ 2 Scan026 | |
| Procedure for testing the point at which cutout contacts disengage. | 16th Oct 1931 | Box 60 \ 2 Scan027 | |
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