| Description | Date | Identifier | |
| The performance of Goshawk-11 electrical units after a 10,000-mile test. | 12th May 1922 | Box 180 \ M1 \ 2 img004 | |
| The performance and wear of electrical components, specifically addressing issues with dynamo commutators and brush materials. | 12th May 1922 | Box 180 \ M1 \ 2 img005 | |
| Inspection report detailing the status of various automotive components. | 12th May 1922 | Box 180 \ M1 \ 2 img006 | |
| Telegram reporting a dynamo commutator failure and requesting a replacement machine. | 12th May 1922 | Box 180 \ M1 \ 2 img007 | |
| The justification for fitting a thermometer alongside a thermostat on Goshawk models. | 13th May 1922 | Box 180 \ M1 \ 2 img008 | |
| 10,000-mile test of a 5-Goshawk-11 car in France, detailing road conditions and component failures. | 7th May 1922 | Box 180 \ M1 \ 2 img009 | |
| Worn parts found on a vehicle, with a mileage comparison of several 'Coshawk' cars. | 7th May 1922 | Box 180 \ M1 \ 2 img010 | |
| Engine vibration, clutch, gearbox, and universal joint issues observed during vehicle testing. | 7th May 1922 | Box 180 \ M1 \ 2 img011 | |
| Component failures and wear issues for the rear axle and springs on Goshawk-II cars. | 7th May 1922 | Box 180 \ M1 \ 2 img012 | |
| Vehicle faults related to springs, frame, fittings, and steering on the Goshawk model. | 19th Dec 1924 | Box 180 \ M1 \ 2 img013 | |
| Various faults and observations on a car, including issues with steering, petrol tank, brakes, and exhaust. | 19th Dec 1924 | Box 180 \ M1 \ 2 img014 | |
| Engine misfiring issue caused by a bad low tension terminal connection. | 15th May 1922 | Box 180 \ M1 \ 2 img015 | |
| Vehicle's journey, detailing a dynamo failure and performance characteristics during a trip to France. | 15th May 1922 | Box 180 \ M1 \ 2 img016 | |
| Vehicle rattles, high oil consumption, and a request for a replacement dynamo. | 17th May 1922 | Box 180 \ M1 \ 2 img017 | |
| Recurring dynamo commutator failures on a Goshawk-11 car and the proposed solution. | 17th May 1922 | Box 180 \ M1 \ 2 img018 | |
| Correspondence investigating the cause of a sticking valve. | 15th May 1922 | Box 180 \ M1 \ 2 img019 | |
| List of urgent experimental parts and agreed modifications required for Goshawk cars. | 15th May 1922 | Box 180 \ M1 \ 2 img020 | |
| Continued list of modifications and specifications for vehicle components. | 16th May 1922 | Box 180 \ M1 \ 2 img021 | |
| Vehicle mileage log and performance report noting a broken glass screen. | 16th May 1922 | Box 180 \ M1 \ 2 img022 | |
| Potential adoption and modification of a Bijur Dynamo & Regulator. | 30th Jan 1918 | Box 180 \ M1 \ 3 img001 | |
| Modifications to a Bijur Dynamo & Regulator. | 30th Jan 1918 | Box 180 \ M1 \ 3 img002 | |
| The fitting of a Bijur dynamo to an experimental engine using a V-pulley and Whittle belt. | 19th Feb 1918 | Box 180 \ M1 \ 3 img003 | |
| Hand-drawn sketch of a swinging dynamo belt drive system with dimensions and notes. | 13th Aug 1918 | Box 180 \ M1 \ 3 img004 | |
| The temporary installation and troubleshooting of a dynamo, including issues with the belt, rotation, and overheating. | 13th Aug 1918 | Box 180 \ M1 \ 3 img005 | |
| Requisition for electrical supplies such as wire, lamps, and an ammeter for drawing boards. | 31th Aug 1918 | Box 180 \ M1 \ 3 img006 | |
| Letter detailing alterations to a blueprint for a drawing office lighting installation at West Wittering. | 31th Aug 1918 | Box 180 \ M1 \ 3 img007 | |
| Insulator specifications, lamp current preferences from Mr. Royce, and a list of required materials. | 6th Feb 1919 | Box 180 \ M1 \ 3 img008 | |
| The replacement and specifications of a Bijur Dynamo. | 6th Feb 1919 | Box 180 \ M1 \ 3 img009 | |
| Procurement of lamps, switches, fuses, and batteries for lighting at West Wittering. | 13th Feb 1919 | Box 180 \ M1 \ 3 img010 | |
| Request for various tools and materials to be purchased for Mr. Royce at West Wittering. | 19th Mar 1919 | Box 180 \ M1 \ 3 img011 | |
| Lighting installation for drawing boards at West Wittering, including a request from Mr. Royce for larger lamps. | 17th Jul 1919 | Box 180 \ M1 \ 3 img012 | |
| Request to supply a negative junction plate for the lighting installation at 'Elmstead' as per drawing Lec.1137. | 10th Sep 1919 | Box 180 \ M1 \ 3 img013 | |
| Request to manufacture two main pole fuse bases for the Elmstead lighting installation, as per drawing No. LeC.1138. | 9th Sep 1919 | Box 180 \ M1 \ 3 img014 | |
| Instruction to manufacture three distribution and fuse boxes for a lighting installation at West Wittering. | 17th Sep 1919 | Box 180 \ M1 \ 3 img015 | |
| Requesting an update on the delivery of parts for the West Wittering lighting installation. | 1st Oct 1919 | Box 180 \ M1 \ 3 img016 | |
| Three modifications requested by Mr. Royce for distribution boxes for West Wittering. | 1st Oct 1919 | Box 180 \ M1 \ 3 img017 | |
| Performance of a small lighting installation, comparing various lamps and a dynamo. | 16th Mar 1920 | Box 180 \ M1 \ 3 img018 | |
| From R. to CK. regarding the storage of resultant models in a simple box. | 12th Mar 1920 | Box 180 \ M1 \ 3 img019 | |
| From 'R.' requesting the construction of a single-cylinder test engine and a personal power plant. | 26th Jun 1920 | Box 180 \ M1 \ 3 img020 | |
| 12/14 volt Mazda lamp that broke down during testing. | 6th Aug 1920 | Box 180 \ M1 \ 3 img021 | |
| Request for a new exhaust valve for a lighting engine at West Wittering, as per drawing No. LeC.1322. | 17th Nov 1920 | Box 180 \ M1 \ 3 img022 | |
| The design and testing of silent dynamos with various armature configurations. | 10th Oct 1921 | Box 180 \ M1 \ 3 img023 | |
| Cold weather starting issues with an Essex engine and a 40/50 HP model, referencing battery problems and ignition systems. | 15th Nov 1921 | Box 180 \ M1 \ 3 img024 | |
| Issues with spark plugs, namely 'oxydisation', and requesting an analysis of electrode materials. | 25th Jun 1925 | Box 180 \ M1 \ 3 img025 | |
| Request with a sketch to manufacture two brass plates for suspending a large electric light shade for Mr. Royce's private account. | 28th Oct 1920 | Box 180 \ M1 \ 3 img026 | |
| Recommendations for modifications to the water pump, exhaust, fan, steering, and radiator on the Goshawk 11. | 1st Nov 1921 | Box 180 \ M1 \ 4 img001 | |
| Failures observed during a 48-hour bump test of the Goshawk chassis's rear suspension. | 11th Nov 1921 | Box 180 \ M1 \ 4 img002 | |
| Bump test for the Goshawk 11, detailing failures of rear spring brackets and another rear spring. | 17th Nov 1921 | Box 180 \ M1 \ 4 img003 | |
| Urgent request for new designs for the Goshawk II car following part failures during bump testing, and for a new chassis for Mr. Royce. | 17th Nov 1921 | Box 180 \ M1 \ 4 img004 | |
| Supply and cost of condensers for the 40/50 chassis, comparing in-house production with an external supplier. | 24th Nov 1921 | Box 180 \ M1 \ 4 img005 | |
| Goshawk II bump test failure, specifically a broken front axle. | 26th Nov 1931 | Box 180 \ M1 \ 4 img006 | |
| Telegram confirmation regarding an investigation into engine roar caused by pressure. | 4th Nov 1921 | Box 180 \ M1 \ 4 img007 | |
| Goshawk 11 bump test failure where the front axle broke, requesting urgent modifications. | 26th Nov 1931 | Box 180 \ M1 \ 4 img008 | |
| Magneto drive for the 'Goshawk II' engine, detailing fitting instructions and proposed modifications. | 5th Nov 1921 | Box 180 \ M1 \ 4 img009 | |
| Sourcing and production of electrical equipment for the 'Goshawk II', including delays and material choices for the starter motor. | 9th Nov 1921 | Box 180 \ M1 \ 4 img010 | |
| Construction of commutators, specifically the insulation between plates. | 9th Nov 1921 | Box 180 \ M1 \ 4 img011 | |
| Index of topics relating to a visit concerning the 'Goshawk II' and '40/50 HP Chassis'. | 11th Nov 1921 | Box 180 \ M1 \ 4 img012 | |
| Visit by Mr. Hives to West Wittering regarding issues with the 'Goshawk II' vehicle. | 7th Nov 1921 | Box 180 \ M1 \ 4 img013 | |
| Goshawk engine support, vibration, roar, and battery ignition. | 1st Nov 1921 | Box 180 \ M1 \ 4 img014 | |
| Improvements and issues related to ignition, cylinder block, and oiling systems. | 9th Nov 1921 | Box 180 \ M1 \ 4 img015 | |
| Proposed modifications and observations on vehicle components including axles, brakes, and thermostats. | 9th Nov 1921 | Box 180 \ M1 \ 4 img016 | |
| Technical memo discussing ball bearings, valve assemblies, springs, induction pipes, and gearbox experiments. | 1st Nov 1921 | Box 180 \ M1 \ 4 img017 | |
| Faults and proposed improvements to the gearbox, tool kit, carburettor system, and exhaust throttle. | 9th Nov 1921 | Box 180 \ M1 \ 4 img018 | |
| Successful running of the Goshawk II first chassis and planned improvements for production. | 1st Nov 1921 | Box 180 \ M1 \ 4 img019 | |
| Drawing Lec.1484 for modifications to fix an over-oiling issue on the Goshawk II engine. | 10th Nov 1921 | Box 180 \ M1 \ 4 img020 | |
| Proposing a road test for the 'Goshawk II' between an unnamed location and Derby. | 15th Nov 1921 | Box 180 \ M1 \ 4 img021 | |
| From 'R.' to 'H.S.' requesting a revised list of alterations for the 'Goshawk II' project. | 16th Nov 1921 | Box 180 \ M1 \ 4 img022 | |
| Dynamos for the 'Goshawk II', comparing their own development against competitors Lucas S.F. and C.A.V. | 16th Nov 1921 | Box 180 \ M1 \ 4 img023 | |
| Status of electrical work and material sourcing for the 'Goshawk II' project. | 21th Nov 1921 | Box 180 \ M1 \ 4 img024 | |
| Invisible lamp wiring, Klaxon horn placement, and switch arrangements for the Goshawk II and 40/50 HP models. | 26th Nov 1921 | Box 180 \ M1 \ 4 img025 | |
| Product strategy, the pitfalls of fitting novelties like front-wheel brakes, competitor analysis, and the 'Goshawk II' project. | 24th Nov 1921 | Box 180 \ M1 \ 4 img026 | |
| Confirmation of a telegram regarding the rearrangement of a battery ignition condenser. | 28th Nov 1921 | Box 180 \ M1 \ 4 img027 | |
| Progress report on the development of mica and paper condensers for the 'Goshawk' ignition system. | 1st Dec 1921 | Box 180 \ M1 \ 5 img001 | |
| Visit from a varnish supplier and samples for mica condensers. | 1st Dec 1921 | Box 180 \ M1 \ 5 img002 | |
| Issues and proposed modifications for the Bendix Drive on the Goshawk 11 electrical equipment. | 12th Dec 1921 | Box 180 \ M1 \ 5 img003 | |
| Optimal placement of the oil filler on the Goshawk 11 engine crankcase. | 19th Dec 1930 | Box 180 \ M1 \ 5 img004 | |
| Telegram received by telephone with handwritten instructions regarding car parts. | 6th Dec 1921 | Box 180 \ M1 \ 5 img005 | |
| The development and comparison of different condensers for the 'Goshawk' ignition system. | 16th Dec 1921 | Box 180 \ M1 \ 5 img006 | |
| Material specifications for a distributor component, proposing aluminium foil and an oiled silk dielectric. | 6th Jan 1921 | Box 180 \ M1 \ 5 img007 | |
| The results of a bump test on a Goshawk II chassis, noting a permanently set frame and other cracked components. | 1st Dec 1921 | Box 180 \ M1 \ 5 img008 | |
| Intentional flexibility of a radiator fixing for the Goshawk 11 engine following a bumping test. | 12th Dec 1921 | Box 180 \ M1 \ 5 img009 | |
| Failed Goshawk 11 chassis frame during a bump test, recommending improved materials and increased thickness. | 1st Dec 1921 | Box 180 \ M1 \ 5 img010 | |
| Design, capacity, and material improvements for the R.R. Goshawk Condenser. | 12th Dec 1921 | Box 180 \ M1 \ 5 img011 | |
| Technical discussion on the design and materials for electrodes and dielectric strips. | 26th Apr 1917 | Box 180 \ M1 \ 5 img012 | |
| Broken Goshawk 11 front axle, discussing forging design flaws, increasing strength, and the critical importance of reliable suppliers to prevent potentially fatal defects. | 12th Dec 1921 | Box 180 \ M1 \ 5 img013 | |
| Requesting information about a fractured front axle to determine if it was an accidental failure or a material defect. | 13th Dec 1921 | Box 180 \ M1 \ 5 img014 | |
| Goshawk rear shock absorber fouling the spring, suggesting a 'Hartford' scissor-type replacement. | 18th Dec 1921 | Box 180 \ M1 \ 5 img015 | |
| The completion of the Goshawk model, detailing the electrical equipment, ignition, and starter systems. | 29th Dec 1921 | Box 180 \ M1 \ 5 img016 | |
| Development and selection of dynamo, switchbox, distributing board, and lantern components. | 25th Apr 1917 | Box 180 \ M1 \ 5 img017 | |
| Start of production for the Goshawk II, outlining outstanding points regarding the crankcase, generator mounting, and magneto control. | 30th Dec 1921 | Box 180 \ M1 \ 5 img018 | |
| Cross-sectional diagram of an automatic gear shifting device for an electric starter in its disengaged position. | 16th Dec 1921 | Box 180 \ M1 \ 5 img019 | |
| Cross-section sketch of an automatic gear shifting device for an electric starter during cranking. | 18th Dec 1921 | Box 180 \ M1 \ 5 img020 | |
| Diagram of an automatic gear shifting device for an electric starter, showing the operation when relieving butting teeth. | 16th Dec 1921 | Box 180 \ M1 \ 5 img021 | |
| Bump test for the Goshawk 11 chassis, detailing a recurring frame fracture at the dumb iron. | 1st Dec 1921 | Box 180 \ M1 \ 5 img022 | |
| Car suspension, gearbox noise, and customer complaints, including those of Mr. Rudyard Kipling. | 22th Aug 1921 | Box 180 \ M1 \ 6 img001 | |
| Methods to increase vehicle speed, including engine and body modifications. | 11th Oct 1921 | Box 180 \ M1 \ 6 img002 | |
| Modifications to a Lanchester car to achieve higher speeds. | 11th Oct 1921 | Box 180 \ M1 \ 6 img003 | |
| Trial induction pipe for a single carburettor on 'Eagles' engines in tanks. | 12th Sep 1921 | Box 180 \ M1 \ 6 img004 | |
| Suggesting a load test on a standard chassis on a steep hill for an armoured car. | 1st Sep 1921 | Box 180 \ M1 \ 6 img005 | |
| Test conditions, load capacity, and engine cooling for armoured car chassis for the India Office. | 1st Aug 1921 | Box 180 \ M1 \ 6 img006 | |
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