| Description | Date | Identifier | |
| Standardising a machine with different output settings based on control brush angles for the S.S. chassis. | 24th Sep 1929 | Box 60 \ 1 Scan126 | |
| Instruction to check the M angle of a dynamo armature before winding due to a slight discrepancy. | 24th Sep 1929 | Box 60 \ 1 Scan127 | |
| Follow-up letter from Le Carbone regarding a trial of dynamo carbon brushes. | 26th Sep 1929 | Box 60 \ 1 Scan128 | |
| Letter to The Le Carbone Co. declining to test experimental brushes due to other priorities and a lack of issues with the standard ones. | 27th Sep 1929 | Box 60 \ 1 Scan129 | |
| Request to manufacture three armatures for a 40/50 HP Chassis Dynamo with an intermediate output. | 2nd Oct 1929 | Box 60 \ 1 Scan130 | |
| Inspection, records, and despatch checklist for dynamo particulars. | 23th Oct 1929 | Box 60 \ 1 Scan131 | |
| Test report on Morganite EG2 brushes with an increased bevel to reduce noise. | 25th Nov 1929 | Box 60 \ 1 Scan132 | |
| Test report on dynamo brushes detailing issues of irregular charging, sticking, sparking, and heavy wear. | 4th Apr 1929 | Box 60 \ 1 Scan133 | |
| Instruction sheet detailing a report on dynamo brush wear after extensive mileage. | 4th Mar 1929 | Box 60 \ 1 Scan134 | |
| Brush wear and performance, concluding that a new type is less reliable and not recommended. | 1st Dec 1924 | Box 60 \ 1 Scan135 | |
| Instruction sheet comparing the properties of different grades of Morganite and Le-Carbone brushes. | 17th Dec 1929 | Box 60 \ 1 Scan136 | |
| Confirming the use of a standard dynamo for the 18-EX chassis. | 26th Nov 1929 | Box 60 \ 1 Scan137 | |
| Dynamo output insufficiency and battery charging for 20 HP and Phantom II models. | 28th Nov 1929 | Box 60 \ 1 Scan138 | |
| The development and specifications of Intermediate Output dynamos, detailing 'major output' and 'minor output' settings. | 28th Nov 1929 | Box 60 \ 1 Scan139 | |
| Dynamo output tests for the 20 HP model compared to the Phantom model. | 28th Nov 1929 | Box 60 \ 1 Scan140 | |
| Request for an up-to-date Standard Phantom II dynamo for comparison testing against an experimental machine. | 3rd Dec 1929 | Box 60 \ 1 Scan141 | |
| Performance comparison table for PI and PII type dynamos with 56 coils and thinner armature stampings. | 1st Apr 1927 | Box 60 \ 1 Scan142 | |
| Performance comparison data table for various dynamo models. | 1st Apr 1927 | Box 60 \ 1 Scan143 | |
| Performance comparison table for various dynamos, based on a routine procedure. | 1st Apr 1927 | Box 60 \ 1 Scan144 | |
| Urging the production of three intermediate Phantom II armatures due to insufficient dynamo output. | 3rd Dec 1929 | Box 60 \ 1 Scan145 | |
| Graph of 40/50 H.P Dynamo Output Curves. | 14th Dec 1929 | Box 60 \ 1 Scan146 | |
| Instructing an experiment with reduced gauge field coil windings for 20 HP and Phantom dynamos. | 3rd Dec 1929 | Box 60 \ 1 Scan147 | |
| Performance of dynamo battery systems in relation to demand for the Phantom II and 20 Hp models. | 4th Dec 1929 | Box 60 \ 1 Scan148 | |
| Dynamo output, control limitations, and safety margins related to heating. | 14th Dec 1929 | Box 60 \ 1 Scan149 | |
| Dynamo performance and requirements for Australian driving conditions. | 4th Dec 1929 | Box 60 \ 1 Scan150 | |
| Dynamo cut-in speed and the instability of the dynamo-battery-load system, leading to overcharging or undercharging issues. | 1st Dec 1929 | Box 60 \ 1 Scan151 | |
| Battery consumption, charging issues, and the need for external automatic dynamo control. | 14th Dec 1929 | Box 60 \ 1 Scan152 | |
| Description of various dynamo output curves shown on a blueprint for a 20 HP unit. | 4th Dec 1929 | Box 60 \ 1 Scan153 | |
| Analysis of intermediate output dynamo performance curves and investigation into control brush spring pressure. | 4th Dec 1922 | Box 60 \ 1 Scan154 | |
| Comparison of output curves for various armature machine configurations for Phantom I and II models. | 14th Dec 1929 | Box 60 \ 1 Scan155 | |
| Modifying windings for 20 HP and Phantom II dynamos to improve performance at high speeds. | 4th Dec 1929 | Box 60 \ 1 Scan156 | |
| Graph showing output curves for a 20 HP dynamo. | 1st Jul 1928 | Box 60 \ 1 Scan157 | |
| Blueprint graph showing 40/50 HP Dynamo Output Curves. | 14th Dec 1929 | Box 60 \ 1 Scan158 | |
| Performance and future development of the dynamo battery system. | 19th Dec 1929 | Box 60 \ 1 Scan159 | |
| Dynamo capacity and proposing a two-way switch scheme for summer and winter charging. | 19th Dec 1929 | Box 60 \ 1 Scan160 | |
| Performance of dynamo battery systems in relation to demand, and the issues of under and over-charging the battery. | 27th Dec 1929 | Box 60 \ 1 Scan161 | |
| Half-charge switching idea for the dynamo and battery charging system. | 27th Dec 1929 | Box 60 \ 1 Scan162 | |
| Auto charge control system and comparing it to other vibrator control systems. | 27th Dec 1929 | Box 60 \ 1 Scan163 | |
| Comparison of vibrator control systems, including carbon plate regulators and metallic 'dithering' contact points. | 27th Dec 1929 | Box 60 \ 1 Scan164 | |
| Dynamo noisiness and a proposed solution using bimetal thermostat control. | 27th Dec 1929 | Box 60 \ 1 Scan165 | |
| Move to an intermediate output dynamo and a reliable battery charge indicator. | 28th Dec 1929 | Box 60 \ 1 Scan166 | |
| Instruction to replace an obsolete dynamo (SS1) with a medium output version (SS2) on chassis 22-EX. | 30th Dec 1929 | Box 60 \ 1 Scan167 | |
| The completion of Phantom II intermediate output dynamos and armatures. | 3rd Jan 1930 | Box 60 \ 1 Scan168 | |
| The differences and testing procedures for new intermediate output dynamos for 20 HP and 40/50 HP models. | 3rd Jan 1930 | Box 60 \ 1 Scan169 | |
| Confirming receipt of a previous letter and issuing instructions for the production of one dozen intermediate output dynamos for testing. | 3rd Jan 1930 | Box 60 \ 1 Scan170 | |
| Modifications and assembly instructions for an intermediate output dynamo for road testing. | 6th Jan 1930 | Box 60 \ 1 Scan171 | |
| To Mr. Brock from EFC revising the dynamo test programme and cancelling a previous arrangement. | 10th Jan 1930 | Box 60 \ 1 Scan172 | |
| Internal works order for two sets of parts for 40/50 and 20-HP dynamos. | 10th Jan 1930 | Box 60 \ 1 Scan173 | |
| Modifying the 40/50 HP and 20 HP dynamos with finer field windings. | 3rd Jan 1930 | Box 60 \ 1 Scan174 | |
| Production test report for a Dynamo AH.35.SS, detailing two points of failure. | 22th Jan 1930 | Box 60 \ 1 Scan175 | |
| Request to check and skim an intermediate output armature due to unevenness causing brush chattering. | 24th Jan 1930 | Box 60 \ 1 Scan176 | |
| Specifications for a higher output dynamo for the Prince of Wales' car 115-WJ. | 28th Jan 1930 | Box 60 \ 1 Scan177 | |
| Specification for a dynamo for the Prince of Wales' car 115-WJ. | 28th Jan 1930 | Box 60 \ 1 Scan178 | |
| Urgent internal memo regarding the swapping and fitting of dynamos on test vehicles. | 30th Jan 1930 | Box 60 \ 1 Scan179 | |
| Testing dynamo SS.7, noting noise issues and harsh brushes, and requesting further tests on a rig. | 3rd Feb 1930 | Box 60 \ 1 Scan180 | |
| Modification of an intermediate output dynamo with a new armature and bracket. | 4th Feb 1930 | Box 60 \ 1 Scan181 | |
| Instructions on 48 coil armature dynamos for 20HP and 40/50HP cases, detailing changes to brush angles and pole pieces. | 10th Feb 1930 | Box 60 \ 1 Scan182 | |
| Arrangement for testing and standardisation of 20 HP and 40/50 HP machines. | 5th Feb 1930 | Box 60 \ 1 Scan183 | |
| Performance of a modified dynamo for the Prince of Wales car 115-WJ. | 5th Feb 1930 | Box 60 \ 1 Scan184 | |
| The dynamo for the Prince of Wales' car, 115-WJ. | 8th Feb 1930 | Box 60 \ 1 Scan185 | |
| Methods to increase dynamo output for the Phantom and 20 HP models. | 1st Feb 1930 | Box 60 \ 1 Scan186 | |
| The development and advantages of a 48 coil armature machine over standard and higher output types. | 1st Feb 1930 | Box 60 \ 1 Scan187 | |
| Dynamo and armature modifications and testing for 20 HP, 40/50 HP, and Phantom models. | 1st Feb 1930 | Box 60 \ 1 Scan188 | |
| The production of higher output dynamos for the Phantom II, comparing 48-coil and 56-coil designs. | 10th Feb 1930 | Box 60 \ 1 Scan189 | |
| Request for a new carcase and end bracket for a 48-coil armature dynamo, with instructions for modification. | 10th Feb 1930 | Box 60 \ 1 Scan190 | |
| Complaints of dynamo brush noise and considering alternative brush grades. | 10th Feb 1930 | Box 60 \ 1 Scan191 | |
| Specification table for different grades of brushes, detailing their physical and electrical properties. | 11th Feb 1930 | Box 60 \ 1 Scan192 | |
| The manufacture of 10 Intermediate Output Dynamos for the 40/50 Chassis. | 11th Feb 1930 | Box 60 \ 1 Scan193 | |
| Letter to The Morgan Crucible Co. Ltd. regarding different grades of carbon brushes for chassis dynamos. | 12th Feb 1930 | Box 60 \ 1 Scan194 | |
| Letter from The Morgan Crucible Company about dynamo brushes for the Phantom II and 20 HP chassis. | 18th Feb 1930 | Box 60 \ 1 Scan195 | |
| Testing of a high output Phantom dynamo for the Prince of Wales' car. | 19th Feb 1930 | Box 60 \ 1 Scan196 | |
| Production test log for 56 coil higher output narrow brush machines of the SS type. | 19th Feb 1930 | Box 60 \ 1 Scan197 | |
| Performance comparison log sheet for PI and PII type dynamos. | 19th Feb 1930 | Box 60 \ 1 Scan198 | |
| Performance comparison table for various dynamos based on routine procedures. | 1st Apr 1927 | Box 60 \ 1 Scan199 | |
| Performance comparison table for various dynamos. | 1st Apr 1927 | Box 60 \ 1 Scan200 | |
| Phantom 48-coil dynamo (SS.7) being fitted to engine 23-EX for a 10,000-mile test. | 19th Feb 1930 | Box 60 \ 1 Scan201 | |
| Arrangements for the despatch and fitting of a special dynamo for the Prince of Wales' car. | 21th Feb 1930 | Box 60 \ 1 Scan202 | |
| Despatch instructions for a higher output dynamo for the Prince of Wales' car. | 21th Mar 1930 | Box 60 \ 1 Scan203 | |
| Instructions regarding experimental brushes for Phantom II and 20HP Dynamos. | 22th Feb 1930 | Box 60 \ 1 Scan204 | |
| Instruction regarding the hardness of natural graphite grades for HM5 and HM6 type brushes. | 8th Dec 1924 | Box 60 \ 1 Scan205 | |
| Letter to The Morgan Crucible Co. Ltd. regarding an order for dynamo brushes for a Phantom. | 24th Feb 1930 | Box 60 \ 1 Scan206 | |
| Request to order experimental dynamo brushes for the Phantom II model. | 24th Feb 1930 | Box 60 \ 1 Scan207 | |
| Test report for a higher output dynamo for a Phantom II chassis, made for the Prince of Wales' car. | 25th Feb 1930 | Box 60 \ 1 Scan208 | |
| Production test report for a machine intended for Phantom I H.O. models, detailing output and performance adjustments. | 25th Feb 1930 | Box 60 \ 1 Scan209 | |
| The performance of a modified 56 coil dynamo (OS.95.SS) for the Phantom II, fitted to the Prince of Wales' car. | 25th Feb 1930 | Box 60 \ 1 Scan210 | |
| Fitting of a new medium output dynamo and the return of the old one. | 28th Feb 1930 | Box 60 \ 1 Scan211 | |
| Requesting modification to the poles on a 48 Coil Armature Dynamo for a higher output machine. | 8th Mar 1930 | Box 60 \ 1 Scan212 | |
| Performance graph showing output requirements for a 40/50 HP S.S. Dynamo, plotting Amperes and Volts against RPM and MPH. | 4th Jul 1940 | Box 60 \ 1 Scan213 | |
| Urging the fitting of a Medium Output Dynamo to a car for rapid testing and standardization. | 11th Mar 1930 | Box 60 \ 1 Scan214 | |
| From EFC to Roy requesting an order of copper wire for experimental dynamo field windings. | 11th Mar 1930 | Box 60 \ 1 Scan215 | |
| Urging the production of medium output dynamos and requesting advance samples for testing. | 17th Mar 1930 | Box 60 \ 1 Scan216 | |
| Instructions regarding the performance investigation of modified medium and high output 48 coil dynamos. | 21th Mar 1930 | Box 60 \ 1 Scan217 | |
| Instruction sheet specifying modifications to brushes and springs for an order. | 1st Dec 1924 | Box 60 \ 1 Scan218 | |
| Specifications and modifications for medium and high output 48 coil dynamos. | 21th Mar 1930 | Box 60 \ 1 Scan219 | |
| The necessary modifications for the experimental high output 48-coil Phantom II dynamo. | 24th Mar 1930 | Box 60 \ 1 Scan220 | |
| Test report on the suitability of a field resistance for a 40/50 high output dynamo. | 24th Mar 1930 | Box 60 \ 1 Scan221 | |
| Requesting to fit a medium output dynamo with experimental parts to machine 19-EX and return the old one. | 7th Apr 1930 | Box 60 \ 1 Scan222 | |
| Fitting of a medium output dynamo with experimental parts to car 19-EX. | 1st Apr 1930 | Box 60 \ 1 Scan223 | |
| Modification of standard Morganite brushes for a Phantom I dynamo, increasing the bevel from 15° to 30°. | 9th Apr 1930 | Box 60 \ 1 Scan224 | |
| Blueprint and production of a higher output dynamo for the 40-50 HP Chassis. | 23th Apr 1930 | Box 60 \ 1 Scan225 | |
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