| Description | Date | Identifier | |
| Improvement of dynamo commutation by modifying armature coil configuration. | 24th Jan 1935 | Box 168a \ 3 img138 | |
| Parts list for a Bentley Ventilated Dynamo, detailing components for the Armature, Bearing Brackets, and Commutator. | 28th Jan 1935 | Box 168a \ 3 img139 | |
| List of parts and modification notes for Frame and Field Winding, section 8100. | 25th Jan 1935 | Box 168a \ 3 img140 | |
| Experimental department report investigating the operation of a dynamo 'cut-out' due to reported troubles. | 21th Jan 1935 | Box 168a \ 3 img141 | |
| Investigation into dynamo cut-out failures due to insufficient contact pressure and proposed design improvements. | 25th Jan 1935 | Box 168a \ 3 img142 | |
| Recommendations for improving the S.R. Cut-out by redesigning the magnetic circuit. | 25th Jan 1935 | Box 168a \ 3 img143 | |
| Graph showing Ampere-Pull curves for a cut-out shunt coil, comparing standard and increased iron circuits. | 21th Jan 1935 | Box 168a \ 3 img144 | |
| Request to make two sets of poles for a ventilated dynamo, with reference to an attached drawing. | 8th Feb 1935 | Box 168a \ 3 img145 | |
| Request to order experimental dynamo armature plates from Messrs. Baldwins. | 9th Feb 1935 | Box 168a \ 3 img146 | |
| Standardisation of parts for an eccentric adjustment dynamo drive. | 11th Dec 1934 | Box 168a \ 3 img147 | |
| Cost estimate for extra jigs, tools and equipment for the J.2 series chassis. | 12th Jan 1935 | Box 168a \ 3 img148 | |
| Standardisation of parts for the eccentric adjustment of the dynamo drive. | 11th Dec 1934 | Box 168a \ 3 img149 | |
| Cost estimate for jigs, tools, and equipment for a modification on the 20/25 HP model. | 22th Dec 1934 | Box 168a \ 3 img150 | |
| Modifications and testing of Bentley dynamos to improve performance and address failures. | 15th Feb 1935 | Box 168a \ 3 img151 | |
| Proposal for an experimental dynamo modification for Bentley & 40/50 models to improve cutting-in speed and high-speed sparking. | 15th Feb 1935 | Box 168a \ 3 img152 | |
| Request to arrange for the rewinding of an experimental dynamo armature. | 16th Feb 1935 | Box 168a \ 3 img153 | |
| Letter to The Morgan Crucible Co. Ltd. requesting the urgent return of a loaned R.R. dynamo. | 20th Feb 1935 | Box 168a \ 3 img154 | |
| Works report on two high output dynamos with armatures that were knocked out of position. | 21th Feb 1935 | Box 168a \ 3 img155 | |
| Letter from The Morgan Crucible Company regarding a delay with a loaned dynamo and a request for an extension. | 22th Feb 1935 | Box 168a \ 3 img156 | |
| On modifying the 20/25 Dynamo's pole tips to improve high-speed commutation and reduce sparking. | 25th Feb 1935 | Box 168a \ 3 img157 | |
| Request for two sets of dynamo poles to be made for Spectre, as per drawing EL.111. | 27th Feb 1935 | Box 168a \ 3 img158 | |
| Confirming the successful results of an experimental dynamo test for a Bentley vehicle. | 27th Feb 1935 | Box 168a \ 3 img159 | |
| Instructions for the assembly of two Bentley Dynamo armatures, detailing required parts. | 5th Mar 1935 | Box 168a \ 3 img160 | |
| The decision to fit a dynamo from a 21.G.IV to an 18.G.IV and the required modifications. | 6th Mar 1935 | Box 168a \ 3 img161 | |
| Modifications and a work hold for a Bentley Ventilated Dynamo, scheme 812. | 7th Mar 1935 | Box 168a \ 3 img162 | |
| Request to build a 20/25 dynamo armature with special stampings and wire. | 7th Mar 1935 | Box 168a \ 3 img163 | |
| Alteration to the Bentley Ventilated Dynamo magnet case. | 14th Mar 1935 | Box 168a \ 3 img164 | |
| Improvements to the brush gear design of the 40/50 and Bentley dynamo to improve performance. | 14th Mar 1935 | Box 168a \ 3 img165 | |
| Test report on modifications to the brush gear for the 40/50 and Bentley dynamo. | 14th Mar 1935 | Box 168a \ 3 img166 | |
| Comparative test results and conclusions for an experimental dynamo versus a standard model, page 2. | 14th Mar 1935 | Box 168a \ 3 img167 | |
| Requesting a pulley be made for a Dynamo Running-In Rig and delivered to the Electrical Experimental Department. | 3rd Mar 1936 | Box 168a \ 3 img168 | |
| Request to fit a fan-ventilated dynamo in the laboratory with a set of machined poles to S183. | 18th Mar 1935 | Box 168a \ 3 img169 | |
| Request to order experimental stampings from Messrs. Sankeys for a special Air Ministry experiment. | 21th Mar 1935 | Box 168a \ 3 img170 | |
| The noise testing of a ventilated dynamo fitted to chassis 21-G-IV. | 15th Mar 1935 | Box 168a \ 3 img171 | |
| The failure of 20/25 HP Tank Engine Dynamos due to electrical overheating during manoeuvres. | 22th Mar 1935 | Box 168a \ 3 img172 | |
| Failures of 20/25 HP chassis dynamos and proposed improvements. | 22th Mar 1935 | Box 168a \ 3 img173 | |
| Modifications to a dynamo's pole piece to reduce magnetic noise and prepare it for future vehicle series. | 22th Mar 1935 | Box 168a \ 3 img174 | |
| Samples of 'Seekay' Wax from Imperial Chemical Industries Ltd. for potential dynamo use. | 23th Mar 1935 | Box 168a \ 3 img175 | |
| Readiness of a dynamo for a 20/25 HP Chassis test. | 25th Mar 1935 | Box 168a \ 3 img176 | |
| Failure of dynamos on 20/25HP tank engines. | 22th Mar 1935 | Box 168a \ 3 img177 | |
| Test results for a modified 20/25 dynamo with increased field resistance and reduced pole core width. | 26th Mar 1935 | Box 168a \ 3 img178 | |
| Availability of a 20/25 chassis dynamo for a 10,000-mile test. | 20th Mar 1935 | Box 168a \ 3 img179 | |
| Standardizing chassis dynamos and starter motors for the 20/25 HP and Bentley models. | 27th Mar 1935 | Box 168a \ 3 img180 | |
| Instructions for modifying and fitting a dynamo for a 10,000-mile test on vehicle 21.G.IV. | 27th Mar 1935 | Box 168a \ 3 img181 | |
| Connection of the dynamo field and regulator, detailing the required modifications. | 2nd Apr 1935 | Box 168a \ 3 img182 | |
| Circuit diagram showing a regulator in the positive side of a shunt. | 3rd Apr 1935 | Box 168a \ 3 img183 | |
| Instructions for building the armature for the 21.G.IV dynamo. | 3rd Apr 1935 | Box 168a \ 3 img184 | |
| Test and mileage log for a C.A.V. type Small Shunt Dynamo. | 20th Feb 1935 | Box 168a \ 3 img185 | |
| The fitting of reduced dynamos and batteries in a Bentley chassis. | 10th Apr 1935 | Box 168a \ 3 img186 | |
| Dynamo sparking issues, special armatures, and suitability for different driving conditions. | 10th Apr 1935 | Box 168a \ 3 img187 | |
| Instruction request to make two further dynamo pulleys to drawing J.11762. | 11th Apr 1935 | Box 168a \ 3 img188 | |
| Visit to Perham Down Camp detailing issues and modifications for 20/25HP Meadows tank engines. | 24th Apr 1935 | Box 168a \ 3 img189 | |
| Cold starting issues related to ignition, carburettor, and gearbox drag. | 1st Feb 1935 | Box 168a \ 3 img190 | |
| Blank or unreadable document page. | 1st Feb 1935 | Box 168a \ 3 img191 | |
| Unreadable or blank document page with binder holes on the right. | 17th May 1935 | Box 168a \ 3 img192 | |
| Recurring fault of a dynamo not charging due to an oil leak onto the commutator. | 17th May 1935 | Box 168a \ 3 img193 | |
| Inquiry to Messrs. Baldwins, Ltd. about the availability of specific armature stampings. | 20th May 1935 | Box 168a \ 3 img194 | |
| Letter from Baldwins Limited regarding available specifications for Armature Stampings. | 22th May 1935 | Box 168a \ 3 img195 | |
| Dynamo fault on one Bentley and a contact breaker failure on another. | 22th May 1935 | Box 168a \ 3 img196 | |
| Report clarifying the events surrounding a contact breaker issue and a vehicle breakdown. | 23th May 1935 | Box 168a \ 3 img197 | |
| The requirement for a ventilated dynamo for the Spectre model due to increased electrical load. | 23th May 1935 | Box 168a \ 3 img198 | |
| Letter from Baldwins Limited responding to an enquiry about Armature Stampings, with a handwritten note confirming an order has been placed. | 30th May 1935 | Box 168a \ 3 img199 | |
| Letter arranging for the fitting and testing of a fan-ventilated dynamo with instructions for adding an extra load. | 30th May 1935 | Box 168a \ 3 img200 | |
| Letter confirming a previously placed order for a supply of stampings to Messrs. Baldwins, Ltd. | 31th May 1935 | Box 168a \ 3 img201 | |
| Internal request to order dynamo brushes for a Cadillac dynamo from the Delco-Remy Co. | 20th Jun 1935 | Box 168a \ 3 img202 | |
| Movement in Bentley dynamos after hard use, recommending a more rigid support. | 20th Jun 1935 | Box 168a \ 3 img203 | |
| Request to fit a large fan-ventilated dynamo, made for 5.B.IV, to a car for extensive testing. | 25th Jun 1935 | Box 168a \ 3 img204 | |
| Request to fit a small fan-ventilated dynamo with standard poles and field winding. | 26th Jun 1935 | Box 168a \ 3 img205 | |
| Request for the manufacture of a modified shaft and a commutator for a new battery ignition dynamo. | 29th Jun 1935 | Box 168a \ 3 img206 | |
| Experimental department report on the Spectre and Bentley fan ventilated dynamo. | 3rd Jul 1935 | Box 168a \ 3 img207 | |
| Improvements to the Bentley and IN CIRG type fan-ventilated dynamo. | 3rd Jul 1935 | Box 168a \ 3 img208 | |
| Dynamo performance, suggesting improvements to reduce sparking and proposing its standardisation for Spectre and Bentley chassis. | 3rd Jul 1935 | Box 168a \ 3 img209 | |
| Experimental department report on a Spectre and Bentley Fan Ventilated Dynamo. | 3rd Jul 1935 | Box 168a \ 3 img210 | |
| Technical memorandum on improvements to the Bentley and D.Ctre type fan-ventilated dynamo. | 3rd Jul 1935 | Box 168a \ 3 img211 | |
| Dynamo performance, sparking issues, and proposals for a new dynamo for standardisation. | 3rd Jul 1935 | Box 168a \ 3 img212 | |
| Providing blueprints for 'Spectre' Dynamo Suspension parts D.75272 and D.75273. | 4th Jul 1935 | Box 168a \ 3 img213 | |
| List of blueprints for the 'Spectre' Dynamo parts. | 12th Jul 1935 | Box 168a \ 3 img214 | |
| Dynamo from chassis B-32-AH sent for observation and repair. | 16th Jul 1935 | Box 168a \ 3 img215 | |
| Letter from a supplier detailing the specifications for enamelled and paper-covered wire. | 12th Aug 1935 | Box 168a \ 3 img216 | |
| Requesting the production of a new armature and commutator for a battery ignition dynamo. | 12th Aug 1935 | Box 168a \ 3 img217 | |
| Specification sheet for enamelled and paper covered copper wire, detailing diameters and covering thickness. | 1st Aug 1935 | Box 168a \ 3 img218 | |
| Request for the production of a new Spectre Dynamo with modifications to the magnet case and field winding. | 14th Aug 1935 | Box 168a \ 3 img219 | |
| Correspondence regarding a faulty dynamo with a recurring knocking sound being returned for examination. | 19th Aug 1935 | Box 168a \ 3 img220 | |
| Necessity of shortening the standard pole core for the Spectre Dynamo and attaching the relevant drawing. | 21th Aug 1935 | Box 168a \ 3 img221 | |
| Drawing of a Dynamo Pole. | 20th Aug 1919 | Box 168a \ 3 img222 | |
| Causes and solutions for sparking and oil leakage on Bentley dynamos. | 23th Aug 1935 | Box 168a \ 3 img223 | |
| Investigation into a Bentley dynamo with a complaint that the armature was fouling and causing knocks. | 23th Aug 1935 | Box 168a \ 3 img224 | |
| Request for a new dynamo motor pulley, Texcrope drives, and a sheet metal belt guard. | 7th Sep 1935 | Box 168a \ 3 img225 | |
| Inquiry about supplying a higher output 70-ampere dynamo for a car experiencing battery drain from extensive night driving. | 12th Sep 1935 | Box 168a \ 3 img226 | |
| Unfeasibility of a 70 amp dynamo and proposing a 30 amp alternative with necessary modifications. | 17th Sep 1935 | Box 168a \ 3 img227 | |
| Correcting a typing error from 70 amps to 17 amps regarding a dynamo for Chassis 70-MS-r. | 21th Sep 1935 | Box 168a \ 3 img228 | |
| List of parts and modifications for a dynamo, dynamo drive, and revolution counter drive for the Large Bore Bentley engine. | 26th Sep 1935 | Box 168a \ 3 img229 | |
| Issue of blueprints (L.O.P.s) for Dynamo and Drive components for the Large Bore Bentley. | 2nd Oct 1935 | Box 168a \ 3 img230 | |
| Request to arrange for the examination of a ventilated dynamo removed from engine 21.G.IV. | 3rd Oct 1935 | Box 168a \ 3 img231 | |
| Improved dynamo-battery automatic cutout, noting considerable improvements with minor modifications still required. | 7th Oct 1935 | Box 168a \ 3 img232 | |
| Continued parts list with part numbers, descriptions, and quantities. | 26th Sep 1935 | Box 168a \ 3 img233 | |
| The investigation and testing of a new dynamo battery automatic cut-out switch. | 7th Oct 1935 | Box 168a \ 3 img234 | |
| The investigation of volt-drop in an experimental cutout unit compared to a standard model. | 7th Oct 1915 | Box 168a \ 3 img235 | |
| List of conclusions and suggestions following a series of tests on electrical or electro-mechanical components. | 7th Oct 1935 | Box 168a \ 3 img236 | |
| Providing blueprints for Dynamo and Revolution Counter Drive components for a Large Bore Bentley. | 9th Oct 1935 | Box 168a \ 3 img237 | |
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