| Description | Date | Identifier | |
| Design and implementation of a spare wheel carrier in the tail of the Phantom model. | 17th Oct 1927 | Box 68 \ 3 scan0133 | |
| Design of a Phantom spare wheel carrier at the rear. | 20th Oct 1927 | Box 68 \ 3 scan0134 | |
| Supply and design of a Phantom rear wheel carrier. | 22th Oct 1927 | Box 68 \ 3 scan0135 | |
| New schedule for a rear wheel carrier, including material options and alterations. | 27th Oct 1927 | Box 68 \ 3 scan0136 | |
| Design change note about the removal of the sheet aluminium cover forward of the spare wheel. | 1st Nov 1927 | Box 68 \ 3 scan0137 | |
| Rattling issue with the spare wheel carrier and proposing a solution involving a clip and rubber pad. | 16th Nov 1927 | Box 68 \ 3 scan0138 | |
| Arranging for sales officials to view a new Phantom rear wheel carrier and luggage grid design. | 21th Nov 1927 | Box 68 \ 3 scan0139 | |
| Examination of a Phantom wheel carrier and narrower radiator before export to France. | 28th Nov 1927 | Box 68 \ 3 scan0140 | |
| Development and production of the Phantom Sports Chassis, including radiator and spare wheel carrier modifications. | 17th Dec 1927 | Box 68 \ 3 scan0141 | |
| Progress report on part improvements and testing for a Phantom car, including the radiator and rear wheel carrier. | 30th Dec 1927 | Box 68 \ 3 scan0142 | |
| Inquiry regarding the availability of the 'Phantom' Wheel Carrier and Luggage Grid. | 30th Dec 1927 | Box 68 \ 3 scan0143 | |
| Sending a car fitted with a rear wheel carrier to London for a visit to Faireys and Stag Lane Aerodrome. | 30th Dec 1927 | Box 68 \ 3 scan0144 | |
| The removal and reallocation of spare wheel fittings from Chassis No. 7-EX. | 7th Feb 1928 | Box 68 \ 3 scan0145 | |
| Use of rear spare wheel carriers for F.2B and G.2 series models. | 24th Feb 1928 | Box 68 \ 3 scan0146 | |
| Knocking issue with the spare wheel carrier on the Phantom model, its causes, and a suggested solution. | 9th Mar 1928 | Box 68 \ 3 scan0147 | |
| The issues with the rear spare wheel carrier and proposed modifications. | 9th Mar 1928 | Box 68 \ 3 scan0148 | |
| Page describing measurements of relative movement between the body and frame at the rear of a vehicle. | 13th Mar 1928 | Box 68 \ 3 scan0149 | |
| Issues with an elusive knock and proposed changes to the Phantom spare wheel carrier. | 13th Mar 1928 | Box 68 \ 3 scan0150 | |
| Rigidity and accessibility issues of rear wheel carriers for the Phantom and 20 HP models. | 20th Apr 1928 | Box 68 \ 3 scan0151 | |
| Sending a picture of a combined spare wheel and travel-trunk carrier. | 23th May 1928 | Box 68 \ 3 scan0152 | |
| Design and rattling issues of the Phantom's rear wheel and luggage carrier. | 19th Jun 1928 | Box 68 \ 3 scan0153 | |
| The inaccessible fixing bolt on the Phantom rear wheel carrier and a suggested design improvement. | 1st Aug 1928 | Box 68 \ 3 scan0154 | |
| Incompatibility of the 40/50 HP spare wheel carrier with various tyre makes and proposing a modification. | 24th Oct 1929 | Box 68 \ 3 scan0155 | |
| Cover for a report on an Epicyclic Reduction Gear. | 8th May 1925 | Box 68 \ 3 scan0156 | |
| Details on the reduction gear ratios for the EAC.II starter motor. | 29th Sep 1924 | Box 68 \ 3 scan0157 | |
| New parts and alterations for a Starter Motor Drive Reduction Gear. | 3rd Dec 1924 | Box 68 \ 3 scan0158 | |
| Modification to the Reduction Gear EAC.II and halting the production of specific parts. | 11th Dec 1924 | Box 68 \ 3 scan0159 | |
| Alterations to drawings for the EAC.II reduction gear. | 24th Dec 1924 | Box 68 \ 3 scan0160 | |
| Secret memorandum detailing modifications to a fabric engine coupling and epicyclic starter gear for the 'V' series. | 9th Jan 1925 | Box 68 \ 3 scan0161 | |
| Design modifications to gears, shafts, and bearings to improve strength and accommodate increased loads. | 13th Jan 1925 | Box 68 \ 3 scan0162 | |
| Query regarding a potential modification to the helix angle on a modified EAC.II Starter Motor Bendix Shaft. | 13th Jan 1925 | Box 68 \ 3 scan0163 | |
| The gear reduction ratios for an EAC starter motor. | 19th Jan 1925 | Box 68 \ 3 scan0164 | |
| Requesting a comparative trial for a starter epicyclic gear with alternative threads and a specific helix angle. | 28th Jan 1925 | Box 68 \ 3 scan0165 | |
| Outlining the revised arrangement and construction plans for the EAC Silent Starter Motor Scheme, including switchgear and mechanical parts. | 23th Oct 1925 | Box 68 \ 3 scan0166 | |
| Modifications to the New Phantom starter drive, including a change in reduction ratio. | 30th Dec 1925 | Box 68 \ 3 scan0167 | |
| File cover for a 28 Slot Armature. | 18th Jan 1927 | Box 68 \ 4 scan0001 | |
| Statement concerning the adoption of an armature with 28 slots and 56 coils, with one of the coils being a lap coil. | 18th Jan 1927 | Box 68 \ 4 scan0002 | |
| The calculation of conductor pitch and commutator connections for coils. | 1st Apr 1927 | Box 68 \ 4 scan0003 | |
| Instruction to experimentally make two 28 slot armatures for a 40/50 HP dynamo to address a noise issue. | 1st Apr 1927 | Box 68 \ 4 scan0004 | |
| Proposal to trial a new 28 slot armature for the Phantom Dynamo to reduce noise. | 25th Apr 1927 | Box 68 \ 4 scan0005 | |
| The performance and testing of the 40/50 N.B. type dynamo with an altered brush arrangement. | 9th May 1927 | Box 68 \ 4 scan0006 | |
| Recommendation for machine re-arrangement and standardisation of brushes. | 9th May 1927 | Box 68 \ 4 scan0007 | |
| Extract discussing issues and experiments with N.B. machines, armatures, and dynamos. | 4th Jun 1927 | Box 68 \ 4 scan0008 | |
| New 28-slot armature for the Phantom dynamo, requesting a noisy machine for preliminary testing. | 9th Jun 1927 | Box 68 \ 4 scan0009 | |
| Request to fit a 28 slot armature to a faulty 40/50 dynamo. | 13th Jun 1927 | Box 68 \ 4 scan0010 | |
| The required alteration to a Phantom Dynamo 28 slot armature. | 17th Jun 1927 | Box 68 \ 4 scan0011 | |
| Instruction to minimise the milling depth of dynamo armature slots to improve the magnetic circuit. | 27th Jun 1927 | Box 68 \ 4 scan0012 | |
| Trial of a modified, less noisy TH65 dynamo for Phantom models. | 27th Jun 1927 | Box 68 \ 4 scan0013 | |
| Responding to a report on a Phantom Dynamo with a 28 slot armature, discussing noisy brushes and high output. | 27th Jun 1927 | Box 68 \ 4 scan0014 | |
| Instructions and test results for a 28-slot armature in a dynamo. | 11th Jul 1927 | Box 68 \ 4 scan0015 | |
| Instruction concluding that for a 28-slot armature in a standard carcase, the B angle must be 9.5 degrees. | 29th Jun 1920 | Box 68 \ 4 scan0016 | |
| Required alteration to the commutator position on a 40/50 HP dynamo 28-slot armature. | 12th Jul 1927 | Box 68 \ 4 scan0017 | |
| From EFC to RHC requesting alterations to two 40/50 dynamos. | 1st Aug 1927 | Box 68 \ 4 scan0018 | |
| Test results for a 28 slot armature for a 40/50 Dynamo, detailing adjustments and performance at different 'B angles'. | 8th Aug 1927 | Box 68 \ 4 scan0019 | |
| Urgent requirement for the 28 slot armature for the Phantom dynamo. | 18th Aug 1927 | Box 68 \ 4 scan0020 | |
| Requesting two 28 slot armatures for a 40/50 dynamo be slightly skimmed due to unevenness. | 20th Aug 1927 | Box 68 \ 4 scan0021 | |
| Performance curve graph for a 40/50 HP Dynamo, plotting ampere output and operating voltage against dynamo RPM. | 18th Oct 1927 | Box 68 \ 4 scan0022 | |
| Instructions detailing tests performed on a 28 slot armature in a standard (NB) machine. | 18th Oct 1927 | Box 68 \ 4 scan0023 | |
| Instruction sheet detailing performance test results for three different armatures. | 8th Dec 1924 | Box 68 \ 4 scan0024 | |
| Graph plotting Dynamo ampere output and operating voltage against Dynamo RPM and chassis MPH. | 3rd Nov 1927 | Box 68 \ 4 scan0025 | |
| Standardising 28 slot armatures for 20 HP and 40/50 HP dynamos to cure noise issues. | 3rd Nov 1927 | Box 68 \ 4 scan0026 | |
| Technical memorandum discussing noise and heating improvements in N.B. machines. | 3rd Nov 1927 | Box 68 \ 4 scan0027 | |
| Standardization and production of the N.B. type dynamo for the 40/50 chassis, detailing testing and noise issues. | 3rd Nov 1927 | Box 68 \ 4 scan0028 | |
| Experimental proof for the use of 28 slot armatures on 40/50 HP dynamos. | 16th Nov 1927 | Box 68 \ 4 scan0029 | |
| The dynamos for the 40/50 HP chassis, focusing on the commutator and a narrow brush machine. | 21th Nov 1927 | Box 68 \ 4 scan0030 | |
| Programme of work for testing a 28 slot armature on an N.B. machine. | 10th Jan 1928 | Box 68 \ 4 scan0031 | |
| Alteration of 28 slot armatures for 40/50 NB machines. | 26th Jan 1928 | Box 68 \ 4 scan0032 | |
| The alteration of three 28-slot armatures. | 28th Jan 1928 | Box 68 \ 4 scan0033 | |
| Amended specification and test for an N.B. type dynamo for EAC. | 7th Mar 1928 | Box 68 \ 4 scan0034 | |
| Requesting an experimental N.B. dynamo I be fitted to chassis 9-EX, replacing dynamo RE.25. | 11th Apr 1928 | Box 68 \ 4 scan0035 | |
| Requesting the standardisation sheet for the Phantom Dynamo Armature to be issued upon completion of tests. | 18th Jun 1928 | Box 68 \ 4 scan0036 | |
| Query regarding the suitability of a 28 slot armature for a narrow brush machine, originally specified for a wide brush machine. | 5th Jul 1928 | Box 68 \ 4 scan0037 | |
| Standardisation sheet and recommended control brush angle for the Phantom dynamo's 28 slot armature. | 19th Jul 1928 | Box 68 \ 4 scan0038 | |
| List of angles for different configurations of the Phantom 28 slot dynamo. | 20th Jul 1928 | Box 68 \ 4 scan0039 | |
| Electrical experimental record sheet for a 28-slot armature, detailing tests, modifications, and mileage. | 19th Apr 1926 | Box 68 \ 4 scan0040 | |
| Standardisation and 10,000-mile test of a Phantom Dynamo 28 slot armature. | 20th Sep 1928 | Box 68 \ 4 scan0041 | |
| 10,000 mile test report on a 28 slot armature. | 19th Sep 1928 | Box 68 \ 4 scan0042 | |
| Standardisation of a 40/50 HP. Dynamo 28 slot armature to improve silence and commutation. | 20th Jul 1928 | Box 68 \ 4 scan0043 | |
| Questionnaire detailing the introduction of a new part for a chassis series. | 28th Jan 1929 | Box 68 \ 4 scan0044 | |
| Instruction to supersede a Commutator End Bracket with a new design for the Phantom Dynamo due to a change in hole position. | 17th Oct 1928 | Box 68 \ 4 scan0045 | |
| Electrical experimental record sheet for a 28-slot armature. | 19th Apr 1926 | Box 68 \ 4 scan0046 | |
| The specification for the inspection and test of an R.R. EAC. Dynamo with a 28 slot armature. | 19th Dec 1928 | Box 68 \ 4 scan0047 | |
| Specification for the inspection and test of the N.B. type Dynamo with 28 slot armature. | 19th Dec 1928 | Box 68 \ 4 scan0048 | |
| Continuation of instructions for dynamo testing and brush bedding procedures. | 19th Dec 1928 | Box 68 \ 4 scan0049 | |
| Instructions for testing and running a dynamo, detailing brush bedding and performance checks. | 19th Dec 1928 | Box 68 \ 4 scan0050 | |
| Inspection and testing procedures for machine components including armatures, bearings, and insulation. | 30th Jan 1929 | Box 68 \ 4 scan0051 | |
| Correcting the angle for the control brush on a Phantom dynamo with a 28 slot armature. | 30th Jan 1929 | Box 68 \ 4 scan0052 | |
| Electrical experimental record sheet for a 28 slot armature. | 19th Apr 1926 | Box 68 \ 4 scan0053 | |
| Request to have a 40/50 dynamo armature commutator skimmed for testing a special grade of brush. | 9th Feb 1929 | Box 68 \ 4 scan0054 | |
| Request to borrow two Phantom dynamo machines built with thinner armature stampings for performance testing. | 13th Feb 1929 | Box 68 \ 4 scan0055 | |
| Optimal number of slots and conductor sizes for an intermediate output armature to reduce noise. | 21th Feb 1929 | Box 68 \ 4 scan0056 | |
| Recommendations for an experimental 24-slot Phantom armature design, comparing it to 28 and 32-slot versions. | 10th Apr 1929 | Box 68 \ 4 scan0057 | |
| Specification for production inspection and testing of R.R. Phantom and S.S. type dynamos with 28 slot armatures and thinner armature stampings. | 10th Apr 1929 | Box 68 \ 4 scan0058 | |
| Specification of Inspection and Test for Phantom & S.S. dynamos with 28 slot armatures. | 10th Apr 1929 | Box 68 \ 4 scan0059 | |
| Page of procedures for testing and bedding the brushes of a dynamo. | 10th Apr 1929 | Box 68 \ 4 scan0060 | |
| Page of test procedures for a dynamo, detailing final brush bedding and various running tests. | 10th Apr 1929 | Box 68 \ 4 scan0061 | |
| Inspection and testing procedures for an electrical machine, focusing on insulation and mechanical condition. | 10th Apr 1929 | Box 68 \ 4 scan0062 | |
| Production test results log for PI type dynamos with 28 slot armatures. | 10th Apr 1929 | Box 68 \ 4 scan0063 | |
| From EFC to Mr. Brock regarding the return of two dynamos borrowed for performance testing with thinner armature stampings. | 10th Apr 1929 | Box 68 \ 4 scan0064 | |
| Reference note for correspondence regarding a 40/50 N.B. dynamo with 28 slot armature. | 10th Apr 1929 | Box 68 \ 4 scan0065 | |
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