| Description | Date | Identifier | |
| Work instruction sheet with handwritten notes on the satisfactory condition of a machine. | 8th Jul 1930 | Box 62 \ 3 scan0054 | |
| Instructions detailing modifications and settings for a 20/25 Dynamo for model 18GIV. | 8th Jul 1930 | Box 62 \ 3 scan0055 | |
| Instructions and observations regarding machine performance curves and settings. | 8th Dec 1924 | Box 62 \ 3 scan0056 | |
| Performance graph of a dynamo, plotting ampere output and operating voltage against dynamo RPM and chassis MPH. | 4th Feb 1932 | Box 62 \ 3 scan0057 | |
| The fitting of a higher-output dynamo with a new die-cast bearing bracket to a 20 HP Chassis. | 9th Apr 1930 | Box 62 \ 3 scan0058 | |
| Cover note for an attached memo regarding 20-HP cars with high output dynamos. | 10th Jul 1930 | Box 62 \ 3 scan0059 | |
| Test results of a high output dynamo fitted to a 20 HP car, chassis GLR-50. | 9th Jul 1930 | Box 62 \ 3 scan0060 | |
| Instructions and test results for a 20/25 Dynamo machine, detailing modifications and performance curves. | 13th Aug 1930 | Box 62 \ 3 scan0061 | |
| Performance graph showing dynamo ampere output and operating voltage against RPM and chassis speed. | 30th Aug 1930 | Box 62 \ 3 scan0062 | |
| Proposal to lubricate the dynamo from the central lubrication scheme for the Phantom II & 25 HP models. | 30th Aug 1930 | Box 62 \ 3 scan0063 | |
| Price comparison for sample carbon brushes from British Carbons versus current prices. | 2nd Sep 1930 | Box 62 \ 3 scan0064 | |
| Specification sheet for standard carbon brushes used in various vehicle models and their components. | 15th Sep 1930 | Box 62 \ 3 scan0065 | |
| Request to examine a defective dynamo returned from J.B. Ferguson Ltd. of Belfast for a chassis GDP-51. | 11th Oct 1930 | Box 62 \ 3 scan0066 | |
| Overhauled dynamo with a solder fault from Chassis GUP-51. | 14th Oct 1930 | Box 62 \ 3 scan0067 | |
| Requesting an urgent modification to a 20 HP medium output dynamo. | 16th Oct 1930 | Box 62 \ 3 scan0068 | |
| Delivery note for two 24 slot armature intermediate dynamos of the 20/25 HP type. | 29th Oct 1930 | Box 62 \ 3 scan0069 | |
| Confirming the completion of an order for 20 HP intermediate output dynamos. | 5th Nov 1930 | Box 62 \ 3 scan0070 | |
| The conversion of a medium output dynamo to a higher output for a customer's car. | 7th Nov 1930 | Box 62 \ 3 scan0071 | |
| Note on the conversion of a medium output dynamo to a higher output for a customer's car. | 7th Nov 1930 | Box 62 \ 3 scan0072 | |
| Request to replace a dynamo on chassis 12-GIV, the original having failed due to molten commutator solder. | 1st Dec 1930 | Box 62 \ 3 scan0073 | |
| Damaged dynamo with a scored commutator and incorrect brushes. | 2nd Dec 1930 | Box 62 \ 3 scan0074 | |
| Request to re-solder the commutator on a 20/25 Dynamo EX 12-GIV with molten solder. | 4th Dec 1930 | Box 62 \ 3 scan0075 | |
| Performance characteristics and potential improvements for car dynamos. | 13th Dec 1930 | Box 62 \ 3 scan0076 | |
| High output dynamos and a two-rate charge scheme, including resistance values and performance characteristics. | 18th Dec 1930 | Box 62 \ 3 scan0077 | |
| Dynamo output limitations, battery charging schemes, and potential electrical modifications. | 8th Dec 1930 | Box 62 \ 3 scan0078 | |
| Extract from a report on the dynamo performance on vehicle 18-GIV at 6,000 miles. | 18th Dec 1930 | Box 62 \ 3 scan0079 | |
| Query regarding an invoice sent to owner B. Hopps for a replacement dynamo on chassis GLR-50. | 20th Dec 1930 | Box 62 \ 3 scan0080 | |
| Suggesting design improvements for a 56 coil P.2. dynamo armature using 17 S.W.G. conductors. | 1st Jan 1931 | Box 62 \ 3 scan0081 | |
| Altering the Phantom II dynamo and two-rate charge scheme, considering 48-watt versus 60-watt headlamps. | 6th Jan 1931 | Box 62 \ 3 scan0082 | |
| Technical memorandum discussing issues with dynamo output and battery charging. | 1st Jun 1931 | Box 62 \ 3 scan0083 | |
| Dynamo output improvements and proposing the use of a voltage control vibrator. | 6th Jan 1931 | Box 62 \ 3 scan0084 | |
| Dynamo output complaints, battery charging, and potential solutions. | 6th Jan 1931 | Box 62 \ 3 scan0085 | |
| Improving dynamo output by using a voltage control vibrator instead of a 3rd brush scheme. | 6th Jan 1931 | Box 62 \ 3 scan0086 | |
| Dynamo coil turns and the relative desirability of 48 watt versus 60 watt bulbs. | 7th Jan 1931 | Box 62 \ 3 scan0087 | |
| Request to the Brass Foundry for a special high-melting-point solder for the Electrical Experimental Department. | 8th Jan 1931 | Box 62 \ 3 scan0088 | |
| Request to manufacture a new armature for a 40-50 HP chassis dynamo with larger gauge wire. | 8th Jan 1931 | Box 62 \ 3 scan0089 | |
| Requesting an oversized dynamo armature for testing with different air gaps. | 8th Jan 1931 | Box 62 \ 3 scan0090 | |
| Instructions regarding the construction of a dynamo armature with 17 S.W.G. wire for a 40-50 HP Chassis. | 9th Jan 1931 | Box 62 \ 3 scan0091 | |
| Output curves for Phantom II 48 coil dynamos and the variables affecting performance. | 9th Jan 1931 | Box 62 \ 3 scan0092 | |
| Modifications and performance curves for various dynamo configurations. | 9th Jan 1931 | Box 62 \ 3 scan0093 | |
| Experiments concerning the volt-ampere curve of a 12-volt battery and potential improvements via armature modifications. | 9th Jan 1931 | Box 62 \ 3 scan0094 | |
| Graph of sustained potential difference versus current for a P&R R.R11-3 battery during charging. | 3rd Jan 1931 | Box 62 \ 3 scan0095 | |
| Graph showing output speed performance curves for various dynamos. | 3rd Jan 1931 | Box 62 \ 3 scan0096 | |
| Graph showing the output speed performance curves of a 48 coil medium output machine. | 6th Jan 1931 | Box 62 \ 3 scan0097 | |
| 'Two Charge Scheme' for a vehicle's electrical system. | 10th Jan 1931 | Box 62 \ 3 scan0098 | |
| Dynamo resistance, headlamp bulbs, and charging schemes. | 10th Jan 1931 | Box 62 \ 3 scan0099 | |
| Correcting a misunderstanding about a 48 coil medium output dynamo, clarifying it was not a 56 coil dynamo. | 4th Jan 1931 | Box 62 \ 3 scan0100 | |
| Instruction sheet for testing a modified I.H. Production Dynamo Y-55-M. | 14th Jan 1931 | Box 62 \ 3 scan0101 | |
| Modification of the two-rate charge scheme on car 22-EX due to recurring battery failure. | 14th Jan 1931 | Box 62 \ 3 scan0102 | |
| Modification of a two-rate charge scheme on various chassis. | 4th Jan 1931 | Box 62 \ 3 scan0103 | |
| Investigation into dynamo failure and output variations on the Phantom II model. | 15th Jan 1931 | Box 62 \ 3 scan0104 | |
| Modifications to a P.2. chassis dynamo 56 coil armature. | 16th Jan 1931 | Box 62 \ 3 scan0105 | |
| 48 coil medium output P.2. dynamo and methods for checking battery charge. | 16th Jan 1931 | Box 62 \ 3 scan0106 | |
| Two-rate charge scheme, a modified dynamo, and the adequacy of 48-watt bulbs for night touring. | 16th Jan 1931 | Box 62 \ 3 scan0107 | |
| Insufficient dynamo output on 20/25 HP cars in the U.S.A. and a proposed modification. | 16th Jan 1931 | Box 62 \ 3 scan0108 | |
| Short memo from 'Sg' to 'Hs' agreeing with a recommendation regarding the 20/25 HP dynamo output. | 19th Jan 1931 | Box 62 \ 3 scan0109 | |
| Modifications to dynamo design to increase current output at high speeds. | 9th Jan 1931 | Box 62 \ 3 scan0110 | |
| Comparison of different types of dynamo systems for chassis electrical systems. | 9th Jan 1931 | Box 62 \ 3 scan0111 | |
| Modifications to external regulator control, comparing dithering contacts with long-period vibrators and considering a Bosch type regulator. | 19th Jan 1931 | Box 62 \ 3 scan0112 | |
| Comparison of the relative heating and output of shunt wound and battery controlled dynamos. | 9th Jan 1931 | Box 62 \ 3 scan0113 | |
| Charge maintenance, a medium output dynamo, and battery capacity meters. | 20th Jan 1931 | Box 62 \ 3 scan0114 | |
| Modifications to the dynamo output for 20/25 U.S.A. cars. | 20th Jan 1931 | Box 62 \ 3 scan0115 | |
| Modification of a dynamo for 20/25 U.S.A. cars. | 20th Jan 1931 | Box 62 \ 3 scan0116 | |
| The medium output dynamo on a 58-GN, detailing armature specifications, production readiness, and bulb suitability. | 20th Jan 1931 | Box 62 \ 3 scan0117 | |
| Confirming satisfactory performance observations on a production medium output dynamo. | 21th Jan 1931 | Box 62 \ 3 scan0118 | |
| Two-charge dynamo output scheme and the implications of using 48-watt headlamp bulbs. | 21th Jan 1931 | Box 62 \ 3 scan0119 | |
| Output characteristics of a dynamo, particularly when connected to a battery. | 21th Jan 1931 | Box 62 \ 3 scan0120 | |
| Production specification for inspection and test of a Phantom II medium output dynamo with a 48 coil armature. | 23th Jan 1931 | Box 62 \ 3 scan0121 | |
| Specification of inspection and test for a 40/50 HP medium output dynamo with a 48 coil armature, version 11. | 22th Jan 1931 | Box 62 \ 3 scan0122 | |
| Instructions for the testing and main bedding-in of dynamo brushes and commutators. | 22th Jan 1931 | Box 62 \ 3 scan0123 | |
| Test procedures for a dynamo, focusing on brush noise, bedding, and performance under various load conditions. | 22th Jan 1931 | Box 62 \ 3 scan0124 | |
| Page of testing procedures for a dynamo, covering mechanical and electrical checks. | 23th Jan 1931 | Box 62 \ 3 scan0125 | |
| Dynamo Output Two Charge Scheme and clarifying previous remarks. | 23th Jan 1931 | Box 62 \ 3 scan0126 | |
| Request to inspect a dynamo from vehicle 18-GIV after a 10,000-mile test and to get details on its un-authorised replacement. | 26th Jan 1931 | Box 62 \ 3 scan0127 | |
| Instruction to change the dynamo on chassis GLN-60 for a high output machine. | 26th Jan 1931 | Box 62 \ 3 scan0128 | |
| Request for a report on issues with dynamo brushes, including noise, sticking, and output variation. | 26th Jan 1931 | Box 62 \ 3 scan0129 | |
| Technical note regarding the output curves and temperature rise settings for various coil dynamos. | 26th Jan 1931 | Box 62 \ 3 scan0130 | |
| Continued document explaining performance curves for various dynamo modifications. | 26th Jan 1931 | Box 62 \ 3 scan0131 | |
| The operation of a Lucas dynamo is in preparation, including observations from various parties. | 26th Jan 1931 | Box 62 \ 3 scan0132 | |
| Output speed performance curves for 20/25 dynamos. | 16th Jan 1931 | Box 62 \ 3 scan0133 | |
| Dynamo output of 56 coil 20/25 dynamos with unmodified and modified poles. | 26th Jan 1931 | Box 62 \ 3 scan0134 | |
| Blueprints for modifying the 20/25 Dynamo to increase output. | 26th Jan 1931 | Box 62 \ 3 scan0135 | |
| Extract from a 10,000-mile report on the performance of a higher output dynamo on vehicle 18-GIV. | 30th Jan 1931 | Box 62 \ 3 scan0136 | |
| Temperature rise and brush angle settings for Phantom II 48 Coil Dynamos. | 27th Jan 1931 | Box 62 \ 3 scan0137 | |
| Output speed performance curves of a 48 coil dynamo modified in various ways. | 27th Jan 1931 | Box 62 \ 3 scan0138 | |
| Dynamo modifications, analysing the effects of increased reluctance in the magnetic circuit and providing recommendations for 40/50 and 20/25 chassis. | 27th Jan 1931 | Box 62 \ 3 scan0139 | |
| Graph of output speed performance curves for a 48 coil dynamo under various conditions at 80°C. | 23th Jan 1931 | Box 62 \ 3 scan0140 | |
| Instructions regarding an investigation into complaints of noise and output variation from the 40/50 Dynamo Brushgear and Commutator. | 23th Jan 1931 | Box 62 \ 3 scan0141 | |
| Instructions regarding experiments with special brushes to address issues with commutator drag and brush noise. | 8th Dec 1924 | Box 62 \ 3 scan0142 | |
| Instruction sheet investigating output reduction issues caused by faulty bedding of control brushes during bench tests. | 8th Dec 1924 | Box 62 \ 3 scan0143 | |
| Instructions regarding the blackening of control brushes, bedding issues, and subsequent loss of output. | 3rd Apr 1928 | Box 62 \ 3 scan0144 | |
| Instruction sheet discussing electrical output variations related to brush grade, field winding, and commutation. | 24th Aug 1927 | Box 62 \ 3 scan0145 | |
| Experimental dynamo tests, engine back-firing, and brush holder performance. | 24th Aug 1927 | Box 62 \ 3 scan0146 | |
| Instructions regarding sticking control brushes due to insufficient clearance and the accumulation of oil and carbon dust. | 26th Jan 1931 | Box 62 \ 3 scan0147 | |
| Request for a report on the performance issues of dynamo brushes, particularly concerning noisiness, sticking, and output variation. | 26th Jan 1931 | Box 62 \ 3 scan0148 | |
| From EFC to RHC urging progress on a P.2 Chassis Dynamo 56 coil armature with larger slots and 17 SWG wire. | 29th Jan 1931 | Box 62 \ 3 scan0149 | |
| Two-rate charge scheme, comparing different dynamo and coil modifications and their output curves. | 30th Jan 1931 | Box 62 \ 3 scan0150 | |
| Responding to points about dynamo performance and headlamp bulb wattage. | 1st Jan 1931 | Box 62 \ 3 scan0151 | |
| Rate of discharge when fitting more powerful bulbs. | 19th Jan 1931 | Box 62 \ 3 scan0152 | |
| Standardisation of a 48 coil armature dynamo of medium output, without pole piece modification. | 19th Jan 1931 | Box 62 \ 3 scan0153 | |
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