| Description | Date | Identifier | |
| Letter to Joseph Sankey & Sons Ltd. regarding armature plates for dynamos. | 12th May 1933 | Box 62 \ 3 scan0354 | |
| Letter from Joseph Sankey & Sons Ltd. confirming the material analysis of Delco-Remy Armature laminations. | 12th May 1933 | Box 62 \ 3 scan0355 | |
| Letter from Joseph Sankey & Sons confirming they have sent samples of STALLOY and LOHYS brand steel for experimentation. | 22th May 1933 | Box 62 \ 3 scan0356 | |
| Letter to Joseph Sankey & Sons Ltd. acknowledging receipt of sample armature plates for comparative testing. | 24th May 1933 | Box 62 \ 3 scan0357 | |
| Request to transfer a vibrator controlled dynamo and C.A.V. vibrator unit from car 58-GN to Sg's new car 104-MY. | 9th Jun 1933 | Box 62 \ 3 scan0358 | |
| Dynamo control and charging schemes for the 25 HP and Phantom II chassis. | 13th Jun 1933 | Box 62 \ 3 scan0359 | |
| The dynamo control on the 40/50 chassis, addressing overcharging issues and the reasons for not adopting a three-rate charge system. | 15th Jun 1933 | Box 62 \ 3 scan0360 | |
| Proposal to improve commutation on the Phantom II and Bensport shunt dynamo by using four brushes instead of two. | 21th Jun 1933 | Box 62 \ 3 scan0361 | |
| Inspection and test specification for a large shunt dynamo. | 22th Jun 1933 | Box 62 \ 3 scan0362 | |
| Instructions for testing springs, insulation resistance, and the bedding of dynamo brushes. | 22th Jun 1933 | Box 62 \ 3 scan0363 | |
| Procedure for bedding and quieting dynamo brushes, including final testing under load. | 22th Jun 1933 | Box 62 \ 3 scan0364 | |
| Series of test procedures for a dynamo, covering electrical and mechanical performance. | 4th Jul 1933 | Box 62 \ 3 scan0365 | |
| Accompanying wiring diagrams for a new dynamo control scheme on the Bensport Chassis. | 4th Jul 1933 | Box 62 \ 3 scan0366 | |
| The production specification and testing for new shunt dynamos for the Bensport and 40/50 chassis. | 6th Jul 1933 | Box 62 \ 3 scan0367 | |
| Specification of inspection and tests for a large shunt dynamo. | 22th Jun 1933 | Box 62 \ 3 scan0368 | |
| Page 2 of instructions for testing springs and bedding brushes on a dynamo. | 22th Jun 1933 | Box 62 \ 3 scan0369 | |
| Procedure for the final bedding and testing of dynamo brushes and commutator. | 22th Jun 1933 | Box 62 \ 3 scan0370 | |
| Test procedures for a dynamo, outlining speed, voltage, and load conditions for mechanical and electrical checks. | 6th Jul 1933 | Box 62 \ 3 scan0371 | |
| Request for two Zenith sliding resistances for testing a new Bentley vibrator controlled dynamo. | 6th Jul 1933 | Box 62 \ 3 scan0372 | |
| Letter from supplier Joseph Sankey & Sons regarding the satisfaction of sample Armature Plates. | 13th Jul 1933 | Box 62 \ 3 scan0373 | |
| Letter to supplier Joseph Sankey & Sons Ltd. regarding a delay in testing stamped armature plates. | 14th Jul 1933 | Box 62 \ 3 scan0374 | |
| Modifications for the Phantom II vibrator control and electrical system for the 27-EX chassis. | 25th Jul 1933 | Box 62 \ 3 scan0375 | |
| Changes to the 20/25 type, including the ignition warning light, instrument board layout, and a list of related drawings. | 26th Jul 1933 | Box 62 \ 3 scan0376 | |
| Line drawing of the 40/50 model instrument board layout. | 28th Jul 1933 | Box 62 \ 3 scan0377 | |
| Outlining a 10,000-mile gold standard test for the Phantom II Vibrator Control installation. | 28th Jul 1933 | Box 62 \ 3 scan0378 | |
| Test results and performance data for a 20/25 Shunt Dynamo. | 31th Jul 1933 | Box 62 \ 3 scan0379 | |
| Request to modify a dynamo armature by using a thicker wire and widening the slots. | 31th Jul 1933 | Box 62 \ 3 scan0380 | |
| Performance issues with shunt dynamos for vibrator control, specifically regarding output at high speeds for night driving. | 1st Aug 1933 | Box 62 \ 3 scan0381 | |
| Instrument board layout for the Phantom II, questioning the starter button position and proposing the addition of a cubby hole. | 3rd Aug 1933 | Box 62 \ 3 scan0382 | |
| Proposal to improve the performance of a 20/25 Shunt Dynamo. | 9th Aug 1933 | Box 62 \ 3 scan0383 | |
| Request for 9 springs and 6 distance pieces to be made for a Bensport Dynamo spring coupling. | 10th Aug 1933 | Box 62 \ 3 scan0384 | |
| Layout of the starter button and cubby hole for the Phantom II Vibrator Control. | 23th Aug 1933 | Box 62 \ 3 scan0385 | |
| Potential fault with the brakes on the Bentley dynamo pinion. | 25th Aug 1933 | Box 62 \ 3 scan0386 | |
| Error in providing special parts for the Bentley chassis damping brake on the dynamo pinion. | 28th Aug 1933 | Box 62 \ 3 scan0387 | |
| Preliminary experiments comparing stamped slotted armature plates with milled slotted plates for shunt dynamos. | 28th Aug 1933 | Box 62 \ 3 scan0388 | |
| Letter to Joseph Lucas Ltd. regarding the testing and modification of two special ammeters. | 1st Sep 1933 | Box 62 \ 3 scan0389 | |
| Letter to Joseph Lucas & Co. Ltd. concerning test results of a C.A.V. voltage regulator. | 5th Sep 1933 | Box 62 \ 3 scan0390 | |
| Letter detailing the decision to standardize a regulator on both Bentley and 40/50 chassis due to safety concerns with the existing dynamo. | 9th Sep 1933 | Box 62 \ 3 scan0391 | |
| Dynamo charging requirements for tank engines. | 9th Sep 1933 | Box 62 \ 3 scan0392 | |
| Proposition to the War Office regarding experimental work on a new machine and its funding. | 9th Sep 1933 | Box 62 \ 3 scan0393 | |
| Request to rewind the armature on an experimental Bensport & 40/50 dynamo with new specifications. | 14th Sep 1933 | Box 62 \ 3 scan0394 | |
| Standardisation of a shunt dynamo controlled by a C.A.V. type B constant voltage vibrator regulator. | 24th Sep 1932 | Box 62 \ 3 scan0395 | |
| Standardisation form for chassis parts. | 1st Jul 1933 | Box 62 \ 3 scan0396 | |
| Urgent request to experiment with a new dynamo armature to supersede the existing 40/50 and Bensport dynamo due to poor high-speed performance. | 29th Sep 1933 | Box 62 \ 3 scan0397 | |
| Instruction to modify a 20/25 HP Dynamo by winding it with a dummy coil to improve commutation. | 18th Oct 1933 | Box 62 \ 3 scan0398 | |
| Experiments and proposed modifications to improve dynamo performance. | 20th Oct 1933 | Box 62 \ 3 scan0399 | |
| Proposal to supersede the existing Bentley dynamo with a new experimental machine. | 20th Oct 1933 | Box 62 \ 3 scan0400 | |
| Modification instructions for the dynamo lubrication on a 40-50 HP Chassis. | 30th Oct 1933 | Box 62 \ 3 scan0401 | |
| Instruction to modify the armature end connections on an experimental Bensport Dynamo PB1. | 30th Oct 1933 | Box 62 \ 3 scan0402 | |
| Specification of inspection and tests for a large shunt dynamo. | 31th Oct 1933 | Box 62 \ 3 scan0403 | |
| Inspection and testing procedures for dynamo components including springs and brushes. | 31th Oct 1933 | Box 62 \ 3 scan0404 | |
| Procedure for the main bedding of dynamo brushes. | 31th Oct 1933 | Box 62 \ 3 scan0405 | |
| Test procedures for dynamo brush bedding, output calibration, and noise assessment. | 31th Oct 1933 | Box 62 \ 3 scan0406 | |
| Instructions for examining and testing a dynamo's insulation, components, and end cover fit. | 13th Dec 1933 | Box 62 \ 3 scan0407 | |
| Request for electrical particulars for a 20/25 HP tank engine dynamo. | 13th Dec 1933 | Box 62 \ 3 scan0408 | |
| Work request to have the commutator skimmed on Experimental Bentley Dynamo No.P.2. | 28th Dec 1933 | Box 62 \ 3 scan0409 | |
| Material supply and standardisation for a new vibrator control dynamo for the 20/25 HP D.2. Series chassis. | 9th Jan 1934 | Box 62 \ 3 scan0410 | |
| Lack of road and bench testing experience for a new dynamo for the 20/25 Chassis (D.2 Series). | 11th Jan 1934 | Box 62 \ 3 scan0411 | |
| Chassis GUB-5 modifications, specifically moving the hand brake forward and a query about fitting a dynamo voltage regulator. | 22th Jan 1934 | Box 62 \ 3 scan0412 | |
| Future fitting of an up-to-date constant voltage controlled dynamo system to chassis GUB-5. | 22th Jan 1934 | Box 62 \ 3 scan0413 | |
| Production test specification for the new 40/50HP switchbox. | 29th Jan 1934 | Box 62 \ 3 scan0414 | |
| Production tests and inspection points for a 40/50 Switchbox designed for use with a Shunt Dynamo. | 27th Jan 1934 | Box 62 \ 3 scan0415 | |
| Instructions for testing electrical terminals and switch positions using a lamp. | 19th Feb 1934 | Box 62 \ 3 scan0416 | |
| Request to have the commutator skimmed on the 40/50 Experimental Dynamo No. XP15 for further brush tests. | 19th Feb 1934 | Box 62 \ 3 scan0417 | |
| Information notice for electricians regarding ammeter overload capacity and battery discharge from accessories. | 20th Feb 1934 | Box 62 \ 3 scan0418 | |
| Request to wind an experimental armature core for a 20/25 Tank Dynamo. | 15th Mar 1934 | Box 62 \ 3 scan0419 | |
| Experimental department report on laboratory bench tests of the R.R.Sch.481 dynamo. | 21th Mar 1934 | Box 62 \ 3 scan0420 | |
| The testing and development of a 20/25 Dynamo with voltage control. | 21th Mar 1934 | Box 62 \ 3 scan0421 | |
| Request to modify a dynamo with a new armature and brush bearing bracket to enable a tachometer drive to be fitted for testing on a Bentley chassis. | 27th Apr 1934 | Box 62 \ 3 scan0422 | |
| Proposal to test a new, smaller, and lighter dynamo on a Bentley chassis. | 25th Apr 1934 | Box 62 \ 3 scan0423 | |
| Instruction to fit a new vibrator controlled dynamo and unit to a 20/25 HP chassis. | 2nd May 1934 | Box 62 \ 3 scan0424 | |
| The standardisation of an eccentrically mounted dynamo drive pinion for 20/25 and 40/50 HP chassis. | 2nd May 1934 | Box 62 \ 3 scan0425 | |
| Impressions from a test run from Boulogne, noting engine detonations, bonnet rattles, and a significant overrun period. | 11th Jun 1934 | Box 62 \ 3 scan0426 | |
| Road test report evaluating the performance of the steering, clutch, brakes, dampers, and dynamo. | 18th Jun 1934 | Box 62 \ 3 scan0427 | |
| Urgent decision to fit a voltage-controlled electrical system to the 20/25 HP chassis. | 18th Jun 1934 | Box 62 \ 3 scan0428 | |
| The status of parts for a new fuse box and additional fuses. | 18th Jun 1934 | Box 62 \ 3 scan0429 | |
| Confirming the decision to standardise the constant voltage scheme for the 20/25 HP chassis. | 20th Jun 1934 | Box 62 \ 3 scan0430 | |
| Query regarding the start date for standardising the constant voltage scheme on the 20/25 HP chassis. | 22th Jun 1934 | Box 62 \ 3 scan0431 | |
| Confirming the introduction of chassis voltage control on the 20/25HP F.2 series chassis. | 23th Jun 1934 | Box 62 \ 3 scan0432 | |
| Requesting a status report on the results of modifications made to a dummy coil for dynamo commutation. | 28th Jun 1934 | Box 62 \ 3 scan0433 | |
| Results of tests on dynamo commutation, comparing different armature coil configurations. | 29th Jun 1934 | Box 62 \ 3 scan0434 | |
| Standardisation of a dynamo drive pinion to facilitate the quietening of engine gears. | 27th Jun 1934 | Box 62 \ 3 scan0435 | |
| Cost estimate for extra jigs, tools, and equipment for the standardization of a dynamo drive pinion. | 19th Jun 1934 | Box 62 \ 3 scan0436 | |
| Experimental department report on the air cooling of chassis dynamos for R.R. & Bentley models. | 23th Jul 1934 | Box 62 \ 3 scan0437 | |
| Bench tests to ascertain the effect of air cooling on the output of a Bentley dynamo. | 24th Jul 1934 | Box 62 \ 3 scan0438 | |
| Increasing dynamo output, discussing limits, air cooling, and recommending an experimental model with a fan. | 24th Jul 1934 | Box 62 \ 3 scan0439 | |
| The air cooling of R.R. & Bentley chassis dynamos. | 23th Jul 1934 | Box 62 \ 3 scan0440 | |
| Bench tests to ascertain the extent of increased output from a Bentley dynamo when cooled by an air stream. | 24th Jul 1934 | Box 62 \ 3 scan0441 | |
| Dynamo output limitations and a recommendation for an experimental air-cooled dynamo. | 24th Jul 1934 | Box 62 \ 3 scan0442 | |
| Letter from the Sales Director's office regarding a Bentley dynamo charging issue and satisfaction with new Jaeger instruments. | 2nd Aug 1934 | Box 62 \ 3 scan0443 | |
| Letter addressing dynamo trouble and arranging a change of headlamps to P.100 type. | 7th Aug 1934 | Box 62 \ 3 scan0444 | |
| Comparison between a proposed new smaller dynamo and the existing dynamo for a Bentley chassis. | 7th Sep 1934 | Box 62 \ 3 scan0445 | |
| Standardisation of a Shunt Dynamo to R.R.SCH.431 for a voltage controlled system. | 21th Jun 1934 | Box 62 \ 3 scan0446 | |
| Estimated cost for extra jigs, tools and equipment for the 'F' series. | 23th Jul 1934 | Box 62 \ 3 scan0447 | |
| Order request for armature stampings for an Experimental Spectre Dynamo. | 25th Sep 1934 | Box 62 \ 3 scan0448 | |
| Graph showing the output curves of two different shunt dynamos for various chassis models. | 21th Dec 1933 | Box 62 \ 3 scan0449 | |
| Blueprint for Armature Stampings D.B.511 and D.B.512. | 21th Dec 1933 | Box 62 \ 3 scan0450 | |
| Request to fit a dynamo from one chassis to another for testing purposes. | 28th Sep 1934 | Box 62 \ 3 scan0451 | |
| Preparations for a 10,000-mile test on car 21.G.IV, including work on the dynamo and voltage regulator. | 20th Oct 1934 | Box 62 \ 3 scan0452 | |
| Specification of inspection and test for a new small shunt dynamo. | 26th Oct 1934 | Box 62 \ 3 scan0453 | |
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