| Description | Date | Identifier | |
| Sending drawing No. LeC 1612 for a Sylphon Thermostat for Goshawk radiator louvres. | 17th Jul 1922 | West Wittering \ I \ July1922 Scan30 | |
| Design and sourcing of oil gauges for the Goshawk instrument board, comparing a Foxborough instrument to a poor quality English-made example. | 18th Jul 1922 | West Wittering \ I \ July1922 Scan31 | |
| Comments and modifications to the Goshawk generator's armature winding. | 19th Jul 1922 | West Wittering \ I \ July1922 Scan32 | |
| Steering issues and potential experimental improvements on the Goshawk model. | 19th Jul 1922 | West Wittering \ I \ July1922 Scan33 | |
| Suggestion by Mr. Royce for quieter Goshawk valve rockers using an oil cushion. | 19th Jul 1922 | West Wittering \ I \ July1922 Scan34 | |
| Desired qualities and issues with Goshawk dynamo brushes. | 19th Jul 1922 | West Wittering \ I \ July1922 Scan35 | |
| Standardisation sheets, with opinions on battery size and starter motor speed for electrical starting equipment. | 19th Jul 1922 | West Wittering \ I \ July1922 Scan36 | |
| Design considerations for motor connections, starter construction, and armature cores. | 19th Jul 1922 | West Wittering \ I \ July1922 Scan37 | |
| Cost of a manufacturing process using stampings over solid pole pieces, with a final decision to be made by Mr. Wormald. | 19th Jul 1922 | West Wittering \ I \ July1922 Scan38 | |
| Cone restrictors and a larger air valve for the Goshawk carburetter. | 19th Jul 1922 | West Wittering \ I \ July1922 Scan39 | |
| Modifications made to the Goshawk clutch mechanism to reduce cost and pedal load. | 19th Jul 1922 | West Wittering \ I \ July1922 Scan40 | |
| Changes to clutch components and updates for the instruction book. | 19th Jul 1922 | West Wittering \ I \ July1922 Scan41 | |
| Modifications and armature winding for the Goshawk generator. | 19th Jul 1922 | West Wittering \ I \ July1922 Scan42 | |
| Instructions for the Goshawk electrical installation, including wiring numbering and dynamo adjustment. | 19th Jul 1922 | West Wittering \ I \ July1922 Scan43 | |
| Troubleshooting report on a faulty dynamo for a No. 4 Goshawk engine. | 19th Jul 1922 | West Wittering \ I \ July1922 Scan44 | |
| Note on the assembly and testing of commutator plates, with a warning to avoid repeating past manufacturing errors. | 6th Aug 1919 | West Wittering \ I \ July1922 Scan45 | |
| Responding to complaints and outlining improvements for ignition keys, steering wheels, and handbrake levers. | 20th Jul 1922 | West Wittering \ I \ July1922 Scan46 | |
| List of additional points regarding the production of Goshawks. | 20th Jul 1922 | West Wittering \ I \ July1922 Scan47 | |
| List of vehicle improvements including the front dumb iron, battery ignition tower, and a non-rattling brake handle. | 21th Jul 1922 | West Wittering \ I \ July1922 Scan48 | |
| Requesting the results of experiments on three types of pinion thrust bearings for the Goshawk back axle. | 21th Jul 1922 | West Wittering \ I \ July1922 Scan49 | |
| Proposal from Mr. Royce for a modification to the Goshawk switch box for magneto ignition. | 21th Jul 1922 | West Wittering \ I \ July1922 Scan50 | |
| New drawings for the Goshawk radiator and shutters, cancelling previous versions and detailing resulting modifications. | 22th Jul 1922 | West Wittering \ I \ July1922 Scan51 | |
| The steering of the Goshawk model, specifically regarding long stroke spring buffers and the steering pendulum lever. | 22th Jul 1922 | West Wittering \ I \ July1922 Scan52 | |
| Request to investigate the cause of harshness and vibration in the front suspension of the 40/50 model. | 22th Jul 1922 | West Wittering \ I \ July1922 Scan53 | |
| Steering improvement using radius rods and other modifications for the Goshawk vehicle. | 24th Jul 1922 | West Wittering \ I \ July1922 Scan54 | |
| Steering gear modifications for the Goshawk and 40/50 models, specifically concerning buffer springs and irreversible steering. | 6th Aug 1919 | West Wittering \ I \ July1922 Scan55 | |
| The 40/50 Radius Rod Experiment, noting the required modification to the side steering tube. | 25th Jul 1922 | West Wittering \ I \ July1922 Scan56 | |
| Outlining dissatisfaction and required modifications for the Goshawk 11 steering system. | 25th Jul 1922 | West Wittering \ I \ July1922 Scan57 | |
| Instructions for the installation of induction pipes, exhaust pipes, and a carburetter on the Goshawk I engine. | 25th Jul 1922 | West Wittering \ I \ July1922 Scan58 | |
| Carburettor and starter modifications for Goshawk II and 40/50 patterns. | 5th Jul 1922 | West Wittering \ I \ July1922 Scan59 | |
| The temporary experimental application of radius rods to the Goshawk steering system. | 27th Jul 1922 | West Wittering \ I \ July1922 Scan60 | |
| Satisfactory performance of the Goshawk starter motor and comparing it to other models. | 27th Jul 1922 | West Wittering \ I \ July1922 Scan61 | |
| Modifications to the Goshawk throttle and carburetter. | 7th Jul 1922 | West Wittering \ I \ July1922 Scan62 | |
| Sending drawings LeC 1601 and 1615 regarding a Goshawk's modified radiator, water pipe, fan bracket, and shutters. | 28th Jul 1922 | West Wittering \ I \ July1922 Scan63 | |
| Recommendation to use a mixture of benzole and petrol for demonstration purposes, noting its performance benefits and potential for sulphur corrosion. | 28th Jul 1922 | West Wittering \ I \ July1922 Scan64 | |
| Comparing the performance and cost of K.L.G. and Lodge ignition plugs in Goshawk and aero engines. | 1st Jul 1922 | West Wittering \ I \ July1922 Scan65 | |
| Delay in completing a generator for the 4-Goshawk-11 and experiments with commutator types. | 3rd Jul 1922 | West Wittering \ I \ July1922 Scan66 | |
| Development status of a dynamo with a built-up mica commutator for the 4-Goshawk-11. | 3rd Jul 1922 | West Wittering \ I \ July1922 Scan67 | |
| Bursting tests conducted on moulded commutators at high speeds and temperatures. | 1st Jul 1922 | West Wittering \ I \ July1922 Scan68 | |
| Temperature testing of commutators made from various moulded materials. | 1st Jul 1922 | West Wittering \ I \ July1922 Scan69 | |
| Test log documenting the results of speed and temperature tests on various moulding materials. | 1st Jul 1922 | West Wittering \ I \ July1922 Scan70 | |
| The results of testing asbestos-filled powders and different shapes of commutator segments. | 1st Jul 1932 | West Wittering \ I \ July1922 Scan71 | |
| The testing of commutator samples, materials used, and plans for further tests. | 1st Jul 1928 | West Wittering \ I \ July1922 Scan72 | |
| Mr. Royce's request to test the effect of radius rods on the steering of the new 40/50 car. | 1st Jul 1922 | West Wittering \ I \ July1922 Scan73 | |
| Difficulty in achieving sensitive throttle control for the Goshawk engine and a proposed solution. | 1st Jul 1922 | West Wittering \ I \ July1922 Scan74 | |
| Difficulty in achieving sensitive control for the Goshawk engine's throttle. | 1st Jul 1922 | West Wittering \ I \ July1922 Scan75 | |
| Design of the Goshawk 11 friction flywheel hub for tool kit V4083. | 1st Jul 1922 | West Wittering \ I \ July1922 Scan76 | |
| Failure of the Goshawk 11 battery box fixing and proposed solutions based on deflection tests. | 10th Jul 1922 | West Wittering \ I \ July1922 Scan77 | |
| The failure of a Goshawk battery box, which split and leaked acid during testing in France. | 22th Jul 1922 | West Wittering \ I \ July1922 Scan78 | |
| Completion of chassis repairs and requesting decisions on bodywork, upholstery, and paint colour for car 6-EX. | 10th Jul 1922 | West Wittering \ I \ July1922 Scan79 | |
| Supply and fitting of various gauges for the Goshawk 11 instrument board. | 10th Jul 1922 | West Wittering \ I \ July1922 Scan80 | |
| Static test report on a Goshawk 11 steering wheel, detailing its failure under torque and load. | 11th Jul 1922 | West Wittering \ I \ July1922 Scan81 | |
| Comparative test of a 40/50 HP wheel, concluding that the Lover wheel is amply strong. | 11th Jul 1922 | West Wittering \ I \ July1922 Scan82 | |
| Modifications to a Goshawk 11 Generator's armature winding. | 11th Jul 1922 | West Wittering \ I \ July1922 Scan83 | |
| Faults with Goshawk front springs and the results of testing new ones. | 11th Jul 1922 | West Wittering \ I \ July1922 Scan84 | |
| Front spring and buffer performance, including issues with clearance and breakages. | 13th Jul 1922 | West Wittering \ I \ July1922 Scan85 | |
| The performance tests of a Goshawk Dynamo with a narrow control brush. | 13th Jul 1922 | West Wittering \ I \ July1922 Scan86 | |
| Experiment fitting radius rods to the front axle of a 40/50 or Goshawk model to cure road shocks. | 12th Jul 1922 | West Wittering \ I \ July1922 Scan87 | |
| The results of bursting tests for moulded commutators, comparing mouldensite and Elo moulding powders. | 13th Jul 1922 | West Wittering \ I \ July1922 Scan88 | |
| Concluding a series of tests on moulding commutators and proposing further testing on dynamos and an experimental car. | 13th Jul 1922 | West Wittering \ I \ July1922 Scan89 | |
| Test report on the performance of various moulding materials under speed and temperature stress. | 13th Jul 1922 | West Wittering \ I \ July1922 Scan90 | |
| Test report comparing the performance of moulding materials, Bakelite and Mouldensite, for commutators. | 12th Jul 1922 | West Wittering \ I \ July1922 Scan91 | |
| The testing and modification of a Goshawk electrical cutout for a distribution board. | 13th Jul 1922 | West Wittering \ I \ July1922 Scan92 | |
| Proposal for the manufacture and comparative testing of a Goshawk dynamo and starter motor. | 14th Jul 1922 | West Wittering \ I \ July1922 Scan93 | |
| The bench tests of the R.R. Goshawk starter motor. | 14th Jul 1922 | West Wittering \ I \ July1922 Scan94 | |
| Continued discussion on motor torque requirements for the Goshawk engine, including a comparison with C.A.V. and Lucas motors. | 14th Jul 1922 | West Wittering \ I \ July1922 Scan95 | |
| Graph comparing speed-torque and ampere-torque curves for CAV and Lucas starter motors on the Goshawk chassis. | 14th Nov 1933 | West Wittering \ I \ July1922 Scan96 | |
| The supply and testing of Le Carbone dynamo brushes for the Goshawk engine. | 17th Jul 1922 | West Wittering \ I \ July1922 Scan97 | |
| Erratum correcting a previous report on Goshawk Dynamos regarding the status of the end cover. | 17th Jul 1922 | West Wittering \ I \ July1922 Scan98 | |
| Overheating of Goshawk dynamos when mounted on a chassis compared to bench test conditions. | 18th Jul 1922 | West Wittering \ I \ July1922 Scan99 | |
| Technical memorandum discussing dynamo overheating during testing and proposals for improved cooling and ventilation. | 18th Jul 1922 | West Wittering \ I \ July1922 Scan100 | |
| Experiments on moulded commutators with asbestos fibre and the commercial position of Mouldensite powder. | 18th Jul 1932 | West Wittering \ I \ July1922 Scan101 | |
| Modifications to the Goshawk II throttle control's butterfly valve angle for improved operation. | 19th Jul 1922 | West Wittering \ I \ July1922 Scan102 | |
| Test report comparing a standard throttle with a modified throttle on an engine. | 24th Jul 1922 | West Wittering \ I \ July1922 Scan103 | |
| Investigation into movement issues in the Goshawk 11 steering column support and failures of aluminium steering boxes. | 24th Jul 1922 | West Wittering \ I \ July1922 Scan104 | |
| Quality and supply issues of brushes for the Goshawk Dynamo. | 24th Jul 1922 | West Wittering \ I \ July1922 Scan105 | |
| Comparing Morganite and Le Carbone dynamo brushes, proposing to fit a set on an experimental car. | 24th Jul 1922 | West Wittering \ I \ July1922 Scan106 | |
| Comparison table of material properties for carbon products from makers Le Carbone and Morganite. | 24th Jul 1922 | West Wittering \ I \ July1922 Scan107 | |
| Request for Goshawk carburetter cone jets, proposing to send a complete new carburetter with the latest modifications. | 24th Jul 1922 | West Wittering \ I \ July1922 Scan108 | |
| Visit to the Peto & Radford Battery Works to inspect plate grids for Goshawk batteries. | 25th Jul 1922 | West Wittering \ I \ July1922 Scan109 | |
| Comparison of P & R and Exide batteries for potential standardization on 40/50 and Goshawk models. | 25th Jul 1922 | West Wittering \ I \ July1922 Scan110 | |
| Comparison of three experimental batteries (Exide, P & R, and C.A.V.-Willard) for the Goshawk project, with a recommendation to proceed with production of the P & R battery. | 25th Jul 1922 | West Wittering \ I \ July1922 Scan111 | |
| Battery options, recommending retaining the 6 XH3 Exide over the C.A.V. Willard. | 26th Jul 1922 | West Wittering \ I \ July1922 Scan112 | |
| Letter from Dunlop Rubber Co. Ltd. concerning issues with security bolts and valve plates on cord tyres. | 26th Jul 1922 | West Wittering \ I \ July1922 Scan113 | |
| Letter from Dunlop Rubber Co. Ltd. regarding tyre security bolt tests and recommendations. | 26th Jul 1922 | West Wittering \ I \ July1922 Scan114 | |
| Experiments to resolve low-speed steering wobble issues on the Goshawk 11 model. | 26th Jul 1922 | West Wittering \ I \ July1922 Scan115 | |
| Spring breakages and seizure issues on Goshawk Bendix Drives for the starter motor. | 26th Jul 1922 | West Wittering \ I \ July1922 Scan116 | |
| Tests conducted on Goshawk induction pipes to investigate petrol distribution and engine performance issues. | 1st Jul 1922 | West Wittering \ I \ July1922 Scan117 | |
| Carburettor performance tests using various fuels and heating methods on Goshawk and 40/50 HP cars. | 1st Jul 1922 | West Wittering \ I \ July1922 Scan118 | |
| Testing carburettor hesitation and engine weakness related to the air valve and high-speed jet fuel supply. | 7th Jul 1922 | West Wittering \ I \ July1922 Scan119 | |
| Technical memorandum comparing the P & R ED.11 battery with the current standard battery for the 40/50 model. | 27th Jul 1922 | West Wittering \ I \ July1922 Scan120 | |
| Experimental batteries from Peto & Radford for the Goshawk, focusing on the casing material. | 27th Jul 1922 | West Wittering \ I \ July1922 Scan121 | |
| Comparison of distributor dimensions and timing settings for Bosch and Watford magnetos, with an accompanying diagram and table. | 31th Jul 1922 | West Wittering \ I \ July1922 Scan122 | |
| Test report on magneto performance, detailing timing, gaps, and endurance for various models. | 21th Jul 1922 | West Wittering \ I \ July1922 Scan123 | |
| Results of various tests conducted on magnetos, noting wear and performance issues. | 1st Jul 1922 | West Wittering \ I \ July1922 Scan124 | |
| Test report on magneto performance, detailing short tests and utility tests to measure maximum spark gaps on various models. | 31th Jul 1922 | West Wittering \ I \ July1922 Scan125 | |
| The comparative high and low speed sparking characteristics of a ZR.6 machine compared to a Bosch unit. | 31th Jul 1922 | West Wittering \ I \ July1922 Scan126 | |
| Report page detailing the sparking range and characteristics of various magnetos, including Watford and Bosch models. | 31th Jul 1922 | West Wittering \ I \ July1922 Scan127 | |
| Test results for maximum spark gap lengths and the effects of shorting gaps on E.O.6c and ELO.6 magnetos. | 31th Jul 1922 | West Wittering \ I \ July1922 Scan128 | |
| Low-speed sparking characteristics, comparing different magnetos and drive mechanisms. | 31th Jul 1922 | West Wittering \ I \ July1922 Scan129 | |
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