| Description | Date | Identifier | |
| Engine unit movement, component failures, and further testing on Goshawk models. | 5th Jul 1922 | Box 49 \ 4 Scan284 | |
| Investigations into a Goshawk's longitudinal steering tube and proposing a test with spring buffers. | 5th Jul 1922 | Box 49 \ 4 Scan285 | |
| Alterations to the Goshawk control gear to suit a new steering box support and correct lever angles, following inspection by Mr. Royce. | 5th Jul 1922 | Box 49 \ 4 Scan286 | |
| Failure of a Goshawk steering box and proposed design modifications. | 6th Jul 1922 | Box 49 \ 4 Scan287 | |
| Experiment and temporary arrangements for testing the Goshawk steering column support. | 11th Jul 1922 | Box 49 \ 4 Scan288 | |
| Goshawk steering issues, discussing flexibility, friction and proposed experiments. | 19th Jul 1922 | Box 49 \ 4 Scan289 | |
| Responding to complaints about the Goshawk ignition switch, steering wheel, and hand brake lever. | 20th Jul 1922 | Box 49 \ 4 Scan290 | |
| The steering of the Goshawk, considering the results of long stroke spring buffers and a longer steering pendulum lever. | 1st Jul 1922 | Box 49 \ 4 Scan291 | |
| Proposing steering improvements for the Goshawk model using radius rods and modified suspension. | 24th Jul 1922 | Box 49 \ 4 Scan292 | |
| Fitting irreversible steering to the Goshawk and 40/50 models. | 24th Jul 1922 | Box 49 \ 4 Scan293 | |
| Examination of Goshawk II steering column support movement and steering box failures. | 24th Jul 1922 | Box 49 \ 4 Scan294 | |
| Dissatisfaction and required modifications for the Goshawk II steering system. | 25th Jul 1922 | Box 49 \ 4 Scan295 | |
| Experiments and issues with low-speed steering wobble on the Goshawk 11 model. | 26th Jul 1922 | Box 49 \ 4 Scan296 | |
| Temporary application of radius rods to the Goshawk steering system for experimental purposes. | 27th Jul 1922 | Box 49 \ 4 Scan297 | |
| Car arrangements, the fuel performance of a No.4 Goshawk engine, and requested design changes for a new Goshawk. | 10th Aug 1922 | Box 49 \ 4 Scan298 | |
| Outlining three combinations of irreversible steering components to be tested to avoid steering wobbles. | 1st Aug 1922 | Box 49 \ 4 Scan299 | |
| Continuation page with points on steering, friction, and suspension geometry recommendations for production Goshawks. | 8th Aug 1932 | Box 49 \ 4 Scan300 | |
| Testing a modified Goshawk steering rod and its effects on steering wobble and stability. | 8th Aug 1932 | Box 49 \ 4 Scan301 | |
| Comparison of steering wheel movement due to steering connection geometry on 40/50 HP and 20 HP models. | 8th Aug 1932 | Box 49 \ 4 Scan302 | |
| Continued report detailing complaints about light and unstable steering. | 1st Aug 1922 | Box 49 \ 4 Scan303 | |
| Bringing Goshawk-11 cars for a steering review before production. | 1st Aug 1922 | Box 49 \ 4 Scan304 | |
| Query regarding the specification of buffer springs on the No. 7 Goshawk vehicle in France. | 14th Aug 1922 | Box 49 \ 4 Scan305 | |
| Adding friction to the steering on Goshawk cars. | 1st Aug 1922 | Box 49 \ 4 Scan306 | |
| Technical memorandum discussing steering performance and potential improvements on the Goshawk-11 model. | 21th Aug 1922 | Box 49 \ 4 Scan307 | |
| The Goshawk steering system, discussing plain thrusts and proposed new springs. | 21th Aug 1922 | Box 49 \ 4 Scan308 | |
| The front springs on a Goshawk-11 aircraft. | 1st Aug 1922 | Box 49 \ 4 Scan309 | |
| With revised instructions for an experiment on the Goshawk steering system, referencing a note from Mr. Royce. | 22th Aug 1922 | Box 49 \ 4 Scan310 | |
| Steering modifications and further experiments for the Goshawk 11 production chassis. | 11th Sep 1922 | Box 49 \ 4 Scan311 | |
| Disagreement on raising the front of the Goshawk model and the type of springs to be used. | 1st Sep 1922 | Box 49 \ 4 Scan312 | |
| Mr. Royce's change of mind about raising the chassis height due to pendulum lever geometry. | 7th Sep 1922 | Box 49 \ 4 Scan313 | |
| Mr. Royce's disapproval of raising the 4-Goshawk-11 car and his decision to revert to the standard spring camber. | 9th Sep 1922 | Box 49 \ 4 Scan314 | |
| Tests to reduce engine pulsations on the 4-COSHAWK-11 model by using rubber engine mounts and disconnecting the steering tube. | 1st Sep 1922 | Box 49 \ 4 Scan315 | |
| Table of measurements for the steering locks on Goshawk chassis. | 28th Sep 1922 | Box 49 \ 4 Scan316 | |
| Despatch of a Goshawk Steering Stay to Mr. Royce for examination. | 9th Nov 1922 | Box 49 \ 4 Scan317 | |
| Test report on a modified Goshawk steering fixing that failed during a bump test. | 9th Nov 1922 | Box 49 \ 4 Scan318 | |
| Mr. Royce's feedback on a Goshawk steering wheel and a request for a larger, 18-inch prototype. | 14th Nov 1922 | Box 49 \ 4 Scan319 | |
| Proposal to add additional friction to steering pivots to correct low-speed steering wobbles. | 26th Oct 1922 | Box 49 \ 4 Scan320 | |
| Redesigning the Goshawk II steering column to incorporate a Mixture Control, listing affected parts. | 27th Nov 1922 | Box 49 \ 4 Scan321 | |
| Conclusions from investigations into steering geometry and components. | 30th Nov 1922 | Box 49 \ 4 Scan322 | |
| Note discussing steering system modifications and the work required for Goshawk, Heron, and Seagull models. | 1st Dec 1922 | Box 49 \ 4 Scan323 | |
| Returning a standardisation sheet with costs for adding friction to steering pivots. | 1st Dec 1922 | Box 49 \ 4 Scan324 | |
| Adding friction to steering pivots to improve steering and prevent low-speed wobbles. | 26th Oct 1922 | Box 49 \ 4 Scan325 | |
| Technical report on steering support tests for the 20 HP model, detailing component failures during rig testing. | 1st Dec 1922 | Box 49 \ 4 Scan326 | |
| Stress test of a steering box and the subsequent material change to aluminium bronze. | 8th Dec 1922 | Box 49 \ 4 Scan327 | |
| The Goshawk 11 steering bracket and stay tube bump test failures and progress. | 8th Dec 1922 | Box 49 \ 4 Scan328 | |
| Cracking of a Goshawk aluminium steering box and proposals for a modified fixing. | 13th Dec 1922 | Box 49 \ 4 Scan329 | |
| Causes of steering wobble, related to radius rods, pivot splaying, and tyre springiness. | 20th Dec 1922 | Box 49 \ 4 Scan330 | |
| Letter from 'BJ' suggesting adjustments to the 20 HP throttle levers to improve driveability. | 28th Dec 1922 | Box 49 \ 4 Scan331 | |
| Complaint regarding the inconvenience of the throttle and accelerator controls on the 20 HP Chassis. | 22th Dec 1922 | Box 49 \ 4 Scan332 | |
| Performance of a steering system on 40/50 and 20 HP cars, focusing on self-centering characteristics. | 1st Jan 1923 | Box 49 \ 4 Scan333 | |
| Steering column effectiveness, friction reduction, and wobble tendency. | 11th Jan 1923 | Box 49 \ 4 Scan334 | |
| Query about the potential disadvantages of a solid steering nut on the Goshawk 11. | 11th Jan 1923 | Box 49 \ 4 Scan335 | |
| Inclination of pivots on front axles for the 'Stork', 'Heron', and 'Goshawk' models. | 13th Jan 1923 | Box 49 \ 4 Scan336 | |
| Technical query regarding the specifications and performance of a worm and sector steering system. | 15th Jan 1923 | Box 49 \ 4 Scan337 | |
| Change from a worm and nut to a worm and wheel system for the 'Seagull' steering box. | 15th Jan 1923 | Box 49 \ 4 Scan338 | |
| Modifications to the Goshawk 11 steering column support rod. | 19th Jan 1923 | Box 49 \ 4 Scan339 | |
| The geometrical movement of the steering wheel on a 20 HP vehicle under spring compression and lift. | 22th Jan 1923 | Box 49 \ 4 Scan340 | |
| The steering of the Goshawk 11 (20 HP car) fitted with radius rods, with a recommendation for design standardization. | 30th Jan 1923 | Box 49 \ 4 Scan341 | |
| Querying the rigidity of the 20 HP raked steering column under different instrument board bracket mounting conditions. | 23th Mar 1923 | Box 49 \ 4 Scan342 | |
| Need for a support for the raked steering column on the 20 HP model to prevent movement. | 26th Mar 1923 | Box 49 \ 4 Scan343 | |
| Optimal placement of Enots Lubricators on Goshawk 11 steering joints and radius rods. | 27th Apr 1923 | Box 49 \ 4 Scan344 | |
| Steering shocks on the 6-EX car and the results of tests to reduce them. | 2nd Jun 1923 | Box 49 \ 4 Scan345 | |
| Shortened instrument board bracket for the Goshawk 11 steering system and related coach-building issues. | 12th Jun 1923 | Box 49 \ 4 Scan346 | |
| Serious faulty steering issue with the 20-HP car, which causes a violent wobble at high speed. | 29th Jan 1924 | Box 49 \ 4 Scan347 | |
| Complaint about the 20 HP steering system's performance with an out-of-balance wheel. | 30th Jan 1924 | Box 49 \ 4 Scan348 | |
| Responding to concerns about faulty steering on the 20-HP model due to front wheel imbalance. | 2nd Feb 1924 | Box 49 \ 4 Scan349 | |
| Faulty side steering in 20-HP cars, investigating issues with weak buffer springs. | 5th Mar 1924 | Box 49 \ 4 Scan350 | |
| Supplying specially strung springs to address customer complaints about steering wind-up and the car diving. | 5th Mar 1924 | Box 49 \ 4 Scan351 | |
| Unauthorized and uncomfortable alteration to the 20-HP steering wheels. | 10th Jul 1924 | Box 49 \ 4 Scan352 | |
| Querying the effect of low pressure tyres on steering for the 20 HP model, specifically regarding wobbles and heaviness. | 9th Aug 1924 | Box 49 \ 4 Scan353 | |
| 20 HP steering issues, comparing low-pressure tyres and investigating causes of stiff steering. | 11th Sep 1924 | Box 49 \ 4 Scan354 | |
| Steering adjustments and their effects on a 20 HP car, including tyre pressure and gearing. | 11th Sep 1924 | Box 49 \ 4 Scan355 | |
| Steering stiffness, the use of steel washers, and a complaint of exhaust boom for GMK-65 trials. | 22th Sep 1924 | Box 49 \ 4 Scan356 | |
| 20 HP steering, comparing different axle types following a customer complaint. | 26th Sep 1925 | Box 49 \ 4 Scan357 | |
| Modifications to the 20 HP steering box to reduce road shocks. | 1st Oct 1925 | Box 49 \ 4 Scan358 | |
| Unsatisfactory Bakelite case for the Goshawk 11 ignition coil and recommending a change of material. | 9th Nov 1922 | Box 49 \ 5 Scan001 | |
| The standardisation and testing of a 4'/50 ignition coil for the Goshawk. | 10th Nov 1922 | Box 49 \ 5 Scan002 | |
| Responding to a telegram about a standardisation sheet for a 40/50 coil in a stabalite case for the 'Goshawk'. | 14th Nov 1922 | Box 49 \ 5 Scan003 | |
| Standardisation sheet for a temporary 40/50 Ignition Coil for the Goshawk engine. | 14th Nov 1922 | Box 49 \ 5 Scan004 | |
| Confirming the dispatch of a 40/50 coil and a high tension terminal insert for a Goshawk chassis. | 16th Nov 1922 | Box 49 \ 5 Scan005 | |
| Despatch of a 40/50 ignition coil for a Goshawk chassis to Mr. Royce. | 16th Nov 1922 | Box 49 \ 5 Scan006 | |
| The temporary standardisation of the 40/50 ignition coil for the Goshawk. | 17th Nov 1922 | Box 49 \ 5 Scan007 | |
| Temporary standardisation to use a 40/50 Ignition Coil for the Goshawk vehicle due to failures with the original bakelite cased coil. | 10th Nov 1922 | Box 49 \ 5 Scan008 | |
| Experimental test report comparing coil failure in bakelite versus stabalite cases. | 1st Nov 1922 | Box 49 \ 5 Scan009 | |
| Note suggesting the temporary standardisation of the Goshawk 40/50 coil for production uniformity. | 10th Nov 1922 | Box 49 \ 5 Scan010 | |
| The temporary standardisation of the 40/50 ignition coil for the Goshawk. | 17th Nov 1922 | Box 49 \ 5 Scan011 | |
| Improving the performance of car No. 6 GOSHAWK by changing the ignition coil. | 23th Nov 1922 | Box 49 \ 5 Scan012 | |
| Ignition alterations for Goshawk models intended for hot climates. | 23th Nov 1922 | Box 49 \ 5 Scan013 | |
| Improvements to the Stabalite coil for the Goshawk engine, including heat insulation and design modifications. | 25th Nov 1922 | Box 49 \ 5 Scan014 | |
| Standard ignition for the Goshawk chassis destined for abroad. | 25th Nov 1922 | Box 49 \ 5 Scan015 | |
| The condition of 20 HP Goshawk chassis allocated for abroad. | 24th Nov 1922 | Box 49 \ 5 Scan016 | |
| Requesting experiments on the Goshawk ignition system's coil temperature tolerance and battery compatibility. | 30th Nov 1922 | Box 49 \ 5 Scan017 | |
| Instruction regarding the replacement of failed Goshawk II ignition coils with new standard Stabalite cased versions. | 27th Nov 1922 | Box 49 \ 5 Scan018 | |
| Ignition coil failures, investigations, and experimental improvements for the 20 HP and 40/50 models. | 17th Jul 1923 | Box 49 \ 5 Scan019 | |
| Analysis of coil failures and potential remedies, discussing different materials and designs. | 17th Jul 1923 | Box 49 \ 5 Scan020 | |
| Investigation report on faults in Goshawk ignition coils and a potential new material for coil cases. | 17th Jul 1923 | Box 49 \ 5 Scan021 | |
| Instructions for an experiment to build three modified battery ignition coils. | 26th Jul 1923 | Box 49 \ 5 Scan022 | |
| Instruction sheet for the acceptance of three spark coils with paper insulated primary windings. | 15th Aug 1923 | Box 49 \ 5 Scan023 | |
| Confirmation memo regarding the handover of 40/50 Stabalite coils for the Goshawk engine. | 16th Aug 1923 | Box 49 \ 5 Scan024 | |
| Specification table for various coil primary windings. | 17th Aug 1923 | Box 49 \ 5 Scan025 | |
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