| Description | Date | Identifier | |
| Part substitutions and modifications for condenser components. | 1st Jul 1921 | Box 45 \ 3 Scan050 | |
| Confirming the dispatch of blueprints for a condenser on a 40/50 chassis. | 11th Jul 1921 | Box 45 \ 3 Scan051 | |
| Proceeding experimentally with modifications to the flexible earthing connection for the condenser. | 19th Sep 1921 | Box 45 \ 3 Scan052 | |
| Circulating a standardisation sheet for a condenser for battery ignition with an earthed connection. | 19th Sep 1921 | Box 45 \ 3 Scan053 | |
| Experimental memo discussing a new condenser design with an improved earthed terminal for the 40/50 chassis. | 9th Sep 1921 | Box 45 \ 3 Scan054 | |
| Query regarding a standardisation sheet to determine costs for a condenser for battery ignition with earthed connection. | 30th Sep 1921 | Box 45 \ 3 Scan055 | |
| Requesting review and signature for a standardisation sheet on a condenser for battery ignition. | 19th Oct 1921 | Box 45 \ 3 Scan056 | |
| Requesting review and signature for a standardisation sheet on a condenser for battery ignition with an earthed connection. | 19th Oct 1921 | Box 45 \ 3 Scan057 | |
| Standardisation sheet for a condenser for battery ignition with earthed connection. | 28th Oct 1921 | Box 45 \ 3 Scan058 | |
| Standardisation of a condenser for battery ignition with an earthed connection. | 19th Sep 1921 | Box 45 \ 3 Scan059 | |
| Deciding against a modification for the 40/50 chassis condenser's flexible earthed connection. | 29th Sep 1922 | Box 45 \ 3 Scan060 | |
| The failure of battery ignition on the 40/50 Chassis, proposing a fix by standardizing a different type of condenser. | 7th Jun 1923 | Box 45 \ 3 Scan061 | |
| Failures of the battery ignition system on 20-HP cars due to faulty condensers. | 7th Jun 1923 | Box 45 \ 3 Scan062 | |
| Standardization of a condenser with a flexible earthing connection for the 40/50 battery ignition system. | 8th Jun 1923 | Box 45 \ 3 Scan063 | |
| Test for the quality of electrical contacts using an oscillatory circuit for high-frequency currents. | 11th Jun 1923 | Box 45 \ 3 Scan064 | |
| Noise caused by vibrations in sliding contacts and ignition condensers. | 11th Jun 1923 | Box 45 \ 3 Scan065 | |
| Recurring electrical troubles in the 20-HP cars, detailing issues with coils, condensers, and wiring. | 19th Jul 1923 | Box 45 \ 3 Scan066 | |
| Recommending the use of a flexible earthing connection and larger capacity condenser for the 40/50 battery ignition system. | 4th Jan 1924 | Box 45 \ 3 Scan067 | |
| Ongoing ignition failures on the 20 HP model due to the burning of make and break points. | 5th Nov 1924 | Box 45 \ 3 Scan068 | |
| Ignition failures and an improved method for earthing the condenser. | 13th Nov 1924 | Box 45 \ 3 Scan069 | |
| Parts request to provide an earth connection for the condenser on a 20 HP chassis distributor. | 17th Dec 1924 | Box 45 \ 3 Scan070 | |
| Instructions for altering the Condenser on a 20 HP Chassis to create a definite earth connection. | 17th Dec 1924 | Box 45 \ 3 Scan071 | |
| Cover note for a blueprint detailing the earth connection for the condenser on a 20 HP chassis. | 31th Dec 1924 | Box 45 \ 3 Scan072 | |
| Confirmation memo regarding the fitting of a new 20 HP condenser earthing connection. | 1st Jan 1925 | Box 45 \ 3 Scan073 | |
| Instructions to modify the Distributor earth connection on the 20 HP Chassis by replacing several parts. | 1st Jan 1925 | Box 45 \ 3 Scan074 | |
| New type of earthing connection for a condenser case being fitted for a 10,000-mile test. | 1st Jan 1925 | Box 45 \ 3 Scan075 | |
| Instructing the fitting of a new type positive earthing condenser case. | 20th Jan 1925 | Box 45 \ 3 Scan076 | |
| Instructing the application of a positive flexible connection on the distributor tower to all other experimental chassis. | 24th Mar 1925 | Box 45 \ 3 Scan077 | |
| Fitment of a flexible earthing connection to specific chassis. | 18th Apr 1925 | Box 45 \ 3 Scan078 | |
| Extract from a report from France on a 10,000-mile test of model 93. | 28th Apr 1925 | Box 45 \ 3 Scan079 | |
| Testing new positive cross connections from the contact breaker to the condenser on experimental cars. | 24th Jun 1925 | Box 45 \ 3 Scan080 | |
| The performance of an experimental condenser earthing scheme and lubricated cam pad after 11,490 miles of testing. | 15th Jul 1925 | Box 45 \ 3 Scan081 | |
| Experimental record sheet for a condenser earthing scheme. | 5th Jan 1925 | Box 45 \ 3 Scan082 | |
| Confirming the deletion of the flexible earthing connection for the condenser from production instructions. | 22th Sep 1926 | Box 45 \ 3 Scan083 | |
| Internal report on battery connection failures, comparing Exide and Peto & Radford batteries, and proposing an improved fixing method. | 5th Dec 1928 | Box 45 \ 3 Scan084 | |
| Use and performance of flexible versus solid battery connections on post-war chassis. | 7th Dec 1928 | Box 45 \ 3 Scan085 | |
| Page from a report discussing lead flow, P. & R. cells, and the correct method for tightening connections. | 19th Jul 1921 | Box 45 \ 3 Scan086 | |
| Request to fill in costs on a standardisation sheet for Helical Gears for the old type 40/50 chassis. | 19th Jul 1921 | Box 45 \ 3 Scan087 | |
| Request for remarks and signature on the standardisation of experiments on helical gears and longer chassis. | 22th Jul 1921 | Box 45 \ 3 Scan088 | |
| Standardisation of helical gears for the old type 40/50 chassis to replace noisy paper gears. | 13th Jul 1921 | Box 45 \ 3 Scan089 | |
| The customer cost for fitting helical gears to old type 40/50 chassis. | 24th Aug 1921 | Box 45 \ 3 Scan090 | |
| Recommendation to fit bronze helical engine gears to old type 40/50 chassis. | 12th Jul 1921 | Box 45 \ 3 Scan091 | |
| Confirming the rejection of unsound steel castings for an exhaust nozzle and engine feet, proposing a new design using forgings. | 15th May 1920 | Box 45 \ 3 Scan092 | |
| Alternative materials and manufacturing methods for components, including feet and exhaust pipe nozzles. | 15th May 1920 | Box 45 \ 3 Scan093 | |
| Alternative manufacturing methods for an exhaust system component, comparing sheet metal fabrication with heavy steel castings. | 15th May 1920 | Box 45 \ 3 Scan094 | |
| Bonnet models ('Buzzard', 'Vulture') and a rear engine foot bracket design following a visit to West Wittering. | 18th May 1920 | Box 45 \ 3 Scan095 | |
| Design notes for a steering pad boss and a 40/50 HP silencer outlet pipe nozzle. | 18th May 1920 | Box 45 \ 3 Scan096 | |
| Correspondence regarding the blueprints for the 'H' Scheme 364 Engine Foot made of drop forgings. | 21th May 1920 | Box 45 \ 3 Scan097 | |
| Requesting instructions to produce and test aluminium cast engine feet and a modified pipe between silencers. | 1st May 1920 | Box 45 \ 3 Scan098 | |
| Blueprints for a new scheme for the rear engine foot on the 40/50 HP chassis, requesting experimental production. | 21th May 1920 | Box 45 \ 3 Scan099 | |
| Instructions from Mr. Royce on the design and fitting of a rear engine foot for the 40/50 HP model. | 28th May 1920 | Box 45 \ 3 Scan100 | |
| From Mr. Royce detailing design modifications for a standard and cantilever, with hand-drawn sketches. | 28th May 1920 | Box 45 \ 3 Scan101 | |
| Continued memorandum on steering box adjustments and returning a scheme with Mr. Royce's criticisms. | 28th May 1920 | Box 45 \ 3 Scan102 | |
| Revised blueprints for a 40/50 Rear Engine Foot, instructing to scrap previous work and proceed with new models. | 2nd Jun 1920 | Box 45 \ 3 Scan103 | |
| Modifications to the 'N' Scheme 364 for the 40/50 engine foot, including the creation of a wooden model for inspection. | 9th Jun 1920 | Box 45 \ 3 Scan104 | |
| Distributing two blueprints for a left-hand rear engine foot and requesting a wooden model be made. | 10th Jun 1920 | Box 45 \ 3 Scan105 | |
| The standardization of the 40/50 HP engine foot and the drilling of dowel pin holes. | 21th Jun 1920 | Box 45 \ 3 Scan106 | |
| The new design of engine feet, replacing the old forged type, and the production of dies. | 25th Jul 1920 | Box 45 \ 3 Scan107 | |
| Creating dies for a new forged design of chassis engine feet. | 28th Jul 1920 | Box 45 \ 3 Scan108 | |
| Alterations to the wooden models of the 40/50 HP engine feet brackets based on Mr. Royce's inspection. | 4th Aug 1920 | Box 45 \ 3 Scan109 | |
| Material substitutions for a further 500 chassis. | 23th Aug 1920 | Box 45 \ 3 Scan110 | |
| Experiment involving fitting G.M. Engine Feet to a Bumper Chassis. | 20th Sep 1920 | Box 45 \ 3 Scan111 | |
| Bump test on new type bronze engine feet for the 40/50 chassis, noting deflection issues. | 27th Sep 1920 | Box 45 \ 3 Scan112 | |
| Weakness in the new engine feet and steering column support for the 40/50 HP chassis. | 1st Oct 1920 | Box 45 \ 3 Scan113 | |
| Log sheet for a bump test on a front chassis, detailing component failures over time. | 2nd Oct 1920 | Box 45 \ 3 Scan114 | |
| Test log detailing failures on a front chassis bumper and associated components during endurance running. | 20th Oct 1920 | Box 45 \ 3 Scan115 | |
| Ordering of steel castings for engine feet for the 'R' series and an inquiry about introducing a new design. | 12th Jan 1921 | Box 45 \ 3 Scan116 | |
| Extract detailing delays on 'R' Series material pending decisions on improvements for several components. | 11th Feb 1921 | Box 45 \ 3 Scan117 | |
| New stamp flange design for a swan-neck exhaust pipe, Silencer Elbow E.2240. | 29th Mar 1920 | Box 45 \ 3 Scan118 | |
| The manufacturing process for a steel cut-out flange, considering drop forging or sheet steel pressing. | 15th May 1920 | Box 45 \ 3 Scan119 | |
| Instructions regarding the design of a steering pad and a silencer outlet pipe nozzle. | 18th May 1920 | Box 45 \ 3 Scan120 | |
| The design and construction of an exhaust silencer snout and cut-out flange, with sketches. | 18th May 1920 | Box 45 \ 3 Scan121 | |
| Forging, exhaust pipe testing, and design considerations for the rear road springs and front shock absorber anchorage on the 40/50 HP chassis. | 18th May 1920 | Box 45 \ 3 Scan122 | |
| Four proposed designs for a sheet metal silencer nozzle. | 26th May 1920 | Box 45 \ 3 Scan123 | |
| Four different designs for an exhaust pipe nozzle. | 26th May 1920 | Box 45 \ 3 Scan124 | |
| Modification to an RS exhaust intermediate pipe, changing its diameter from 3' to 2 1/2'. | 31th May 1920 | Box 45 \ 3 Scan125 | |
| Proposal to change the 40/50 cut-out seating from a steel casting to a lighter, drop-forged part with a thinner flange. | 31th May 1920 | Box 45 \ 3 Scan126 | |
| Mr. Royce's design criticisms and required modifications for an exhaust pipe nozzle scheme. | 4th Jun 1920 | Box 45 \ 3 Scan127 | |
| High cost of exhaust nozzle pressings and arranging for handmade samples to be tested. | 7th Jun 1920 | Box 45 \ 3 Scan128 | |
| New, lightweight exhaust pipe nozzle being sent for testing and comparison against heavier steel castings. | 18th Aug 1920 | Box 45 \ 3 Scan129 | |
| Instructing the immediate standardization of a sheet steel exhaust pipe nozzle to replace the current heavy cast steel version. | 21th Jun 1920 | Box 45 \ 3 Scan130 | |
| List of experimental parts fitted to chassis 6.EX. | 22th Jun 1920 | Box 45 \ 3 Scan131 | |
| Extract listing experimental parts fitted to the 6.EX Car for a meeting at West Wittering. | 28th Jun 1920 | Box 45 \ 3 Scan132 | |
| Testing procedure for chassis exhaust fittings and nozzle outlets. | 28th Jun 1920 | Box 45 \ 3 Scan133 | |
| New design for engine feet as forgings and a related sleeve for the rear silencer. | 26th Jul 1920 | Box 45 \ 3 Scan134 | |
| Replacement of steel castings with forgings for the swan-neck pipe fixing, scheme N.366. | 28th Jul 1920 | Box 45 \ 3 Scan135 | |
| Design, material strength, and manufacturing of exhaust snouts. | 1st Aug 1920 | Box 45 \ 3 Scan136 | |
| The re-ordering of material for 500 chassis, proposing the substitution of heavy steel castings with sheet metal and drop forgings. | 23th Aug 1920 | Box 45 \ 3 Scan137 | |
| Query on whether a standardisation sheet is required for a steel forging for an exhaust cut-out. | 28th Sep 1920 | Box 45 \ 3 Scan138 | |
| Extract discussing the wiring diagram, switch, and other components for the Goshawk II. | 14th Sep 1921 | Box 45 \ 3 Scan139 | |
| Recommendation to improve the wiring arrangement for the 20 HP car to allow easier removal of the valve cover assembly. | 5th Oct 1921 | Box 45 \ 3 Scan140 | |
| The wiring scheme for the Goshawk 11 and the fitting of the Klaxon Horn. | 3rd Nov 1921 | Box 45 \ 3 Scan141 | |
| Progress and challenges of electrical work on the 'Goshawk II' project, including component status and material sourcing. | 21th Nov 1921 | Box 45 \ 3 Scan142 | |
| Extract from a report detailing a visit regarding dynamo and chassis wiring specifications for the 'Goshawk II'. | 25th Nov 1921 | Box 45 \ 3 Scan143 | |
| Electrical circuits and fuse arrangements for the 'Goshawk II' model. | 25th Nov 1921 | Box 45 \ 3 Scan144 | |
| Invisible wiring for lamps on the Goshawk II and 40/50 HP models, and related electrical components. | 26th Nov 1921 | Box 45 \ 3 Scan145 | |
| Fitting a Klaxon horn and the company's cautious approach to new technologies like front-wheel brakes. | 26th Nov 1921 | Box 45 \ 3 Scan146 | |
| Letter discussing feedback on the 20 HP car and encouraging evaluation of the Goshawk II aero engine. | 26th Nov 1921 | Box 45 \ 3 Scan147 | |
| Specification for Lucas electrical equipment for the 'Goshawk' chassis. | 29th Nov 1921 | Box 45 \ 3 Scan148 | |
| Specification of C.A.V. electrical equipment components for three chassis. | 29th Nov 1921 | Box 45 \ 3 Scan149 | |
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