| Description | Date | Identifier | |
| Dynamometer power test results and general running impressions for the Goshawk 11 engine. | 1st Aug 1921 | Morton \ M1.1 img002 | |
| Engine performance issues including detonation, vibrations, and valve mechanism measurements. | 1st Aug 1921 | Morton \ M1.1 img003 | |
| Cylinder block extension, valve timing with different tappet clearances, and water pump flow test results. | 1st Aug 1921 | Morton \ M1.1 img004 | |
| Engine oil pump, system, and carburation performance, including a data table on oil flow. | 1st Aug 1921 | Morton \ M1.1 img005 | |
| The performance of the clutch and gearbox, noting weak clutch springs. | 1st Aug 1921 | Morton \ M1.1 img006 | |
| Criticism regarding the long, elastic studs holding the cylinder head on the Goshawk 11 engine. | 1st Aug 1921 | Morton \ M1.1 img007 | |
| Issues with stud flexibility, leaks from cylinder water jacket tubes, and fixing water jacket covers. | 1st Aug 1921 | Morton \ M1.1 img008 | |
| Recommendations for making experimental sets water-tight and modifying the flywheel casing to prevent damage from dropped parts. | 1st Aug 1921 | Morton \ M1.1 img009 | |
| Feedback and proposed solutions for the Goshawk II engine. | 8th Aug 1921 | Morton \ M1.1 img010 | |
| Design considerations for countersunk screws, flywheel casing, clutch trunnion, and spring drive. | 8th Aug 1921 | Morton \ M1.1 img011 | |
| From R. to H.S. discussing design considerations for various engine components. | 8th Aug 1921 | Morton \ M1.1 img012 | |
| Design points for an oil level indicator, oil filter, inspection cover, and core plugs. | 8th Aug 1921 | Morton \ M1.1 img013 | |
| Test report on the Goshawk 11 engine, detailing issues with the clutch trunnion and cylinder studs. | 11th Aug 1921 | Morton \ M1.1 img014 | |
| Engine horsepower tests related to induction pipe heating and progress on swaging cylinder tubes. | 11th Aug 1921 | Morton \ M1.1 img015 | |
| Engine testing regarding a cracked exhaust pipe, carburettor flooding and running on a paraffin mixture. | 11th Aug 1920 | Morton \ M1.1 img016 | |
| The dismantling and examination of a Goshawk 11 engine and a separate test on a universal joint. | 15th Aug 1921 | Morton \ M1.1 img017 | |
| Continuation of a document detailing an engine oil leak and the precautions taken. | 15th Aug 1921 | Morton \ M1.1 img018 | |
| Comparing different tyre sizes (32 X 4½ vs 820 X 120) and their effect on vehicle ground clearance for the 40/50 HP model. | 19th Aug 1921 | Morton \ M1.1 img019 | |
| The Goshawk 11 engine, detailing tests on pistons, clutch modifications, and tyre specifications. | 19th Aug 1921 | Morton \ M1.1 img020 | |
| Use of 20° angle teeth in the 'Goshawk II' gearbox. | 3rd Sep 1921 | Morton \ M1.1 img021 | |
| 150-mile road test of the Goshawk 11 chassis, detailing noise issues and proposed modifications. | 1st Sep 1921 | Morton \ M1.1 img022 | |
| Resolving issues with angle gears, crankshaft noise, and clutch problems related to steel plate buckling and fabric thickness. | 1st Sep 1921 | Morton \ M1.1 img023 | |
| Advantages of a fabric-based clutch design seen on a Mack Truck and a proposal for a new fabric. | 1st Sep 1921 | Morton \ M1.1 img024 | |
| Proposing a new multi-chamber exhaust silencer design to eliminate a tinny noise. | 7th Sep 1921 | Morton \ M1.1 img025 | |
| Querying the status of necessary equipment for externally manufactured dynamos and motors for the Goshawk II. | 19th Aug 1921 | Morton \ M1.1 img026 | |
| Outline of the chief features of a non-trembler battery ignition system for the 'Goshawk II' engine. | 1st Aug 1921 | Morton \ M1.1 img027 | |
| Page 2 of a memo from R. to Mr. Walker discussing special features of an ignition system. | 1st Aug 1921 | Morton \ M1.1 img028 | |
| Confirmation of a telegram regarding testing gears on a Goshawk two gearbox. | 31th Aug 1921 | Morton \ M1.1 img029 | |
| Status report on the suitability of dynamos and starter motors from various manufacturers for the 'Goshawk II' project. | 19th Aug 1921 | Morton \ M1.1 img030 | |
| Design and features of the 'Goshawk II' open body. | 1st Jul 1921 | Morton \ M1.1 img031 | |
| The lack of an oil filler plug and oil level check method for the Goshawk II gearbox. | 1st Jul 1921 | Morton \ M1.1 img032 | |
| The first test run of the Goshawk 11 engine and gearbox units. | 22th Jul 1921 | Morton \ M1.1 img033 | |
| The initial test run impression of the Goshawk 11 engine and its gear units. | 22th Jul 1921 | Morton \ M1.1 img034 | |
| Test report on the Goshawk 11 engine, detailing oil leaks and design recommendations for the cylinder head. | 1st Aug 1921 | Morton \ M1.1 img035 | |
| Post-war complaints and performance related to straight-sided cord tyres. | 1st Jun 1921 | Morton \ M1.1 img036 | |
| Suspension design for the 'Goshawk II', particularly the need for increased damping friction. | 22th Jun 1921 | Morton \ M1.1 img037 | |
| Straight-sided cord tyres, including a decision to use them on the 'Goshawk' experimental cars and test results on performance. | 22th Jun 1921 | Morton \ M1.1 img038 | |
| From E. to EFC relaying Mr. Royce's concerns about potential delays and the design of the 'Goshawk II' dynamo and motor. | 1st Jun 1921 | Morton \ M1.1 img039 | |
| Note detailing a suitable Autovac Tank model and a method to prevent oil from soaking through a felt strip. | 1st Jun 1921 | Morton \ M1.1 img040 | |
| Road test report for the 'Goshawk' 11 (X4219) chassis, evaluating its engine, clutch, brakes, steering, and springing. | 29th Aug 1921 | Morton \ M1.1 img041 | |
| Road test issues found with a chassis, covering the gearbox, rear axle, universal joint, and carburettor. | 29th Aug 1921 | Morton \ M1.1 img042 | |
| Oil leakage issue from a universal joint, caused by a felt washer. | 8th Aug 1921 | Morton \ M1.1 img043 | |
| Design issues and suggestions for the dashboard, controls, brake, radiator, and bonnet on the 'GOSHAWK 11' chassis. | 1st Aug 1921 | Morton \ M1.1 img044 | |
| Request to create a dummy wooden model armature for the 'Goshawk II' motor and dynamo to test winding space. | 10th Aug 1921 | Morton \ M1.1 img045 | |
| Selection, wiring, and electrical specifications for the 'Goshawk II' lamps. | 1st Aug 1921 | Morton \ M1.1 img046 | |
| Responding to a list of points regarding the Goshawk II engine. | 26th Aug 1921 | Morton \ M1.1 img047 | |
| List of complaints and corresponding remarks for various mechanical components. | 26th Aug 1921 | Morton \ M1.1 img048 | |
| List of complaints and corresponding remarks regarding vehicle component modifications. | 26th Aug 1921 | Morton \ M1.1 img049 | |
| Test report on the Goshawk 11 rear brakes, detailing failures and comparisons with the 40/50 HP model. | 1st Oct 1921 | Morton \ M1.1 img050 | |
| Noise issues with a Hyatt Roller Bearing and the plan to re-test it with different clearances. | 1st Oct 1921 | Morton \ M1.1 img051 | |
| Cracked induction pipe on the Goshawk 11 and subsequent performance metrics from a test run. | 9th Sep 1921 | Morton \ M1.1 img052 | |
| Issues and potential improvements for the Goshawk II chassis clutch system. | 14th Sep 1921 | Morton \ M1.1 img053 | |
| Clutch design alternatives, including single vs. multi-plate clutches and the use of different friction materials. | 1st Sep 1921 | Morton \ M1.1 img054 | |
| Carburettor modifications for the Goshawk II engine, addressing issues with the float chamber, throats, and extra air valve. | 1st Sep 1921 | Morton \ M1.1 img055 | |
| Design specifications and component choices for a vehicle. | 14th Sep 1921 | Morton \ M1.1 img056 | |
| Modifications to American cars regarding spring fittings, exhaust systems, and radiator fans. | 14th Sep 1921 | Morton \ M1.1 img057 | |
| Performance of a Delco starter switch and suggesting an alternative for the Goshawk II. | 15th Sep 1931 | Morton \ M1.1 img058 | |
| Querying the evidence of failures in Delco starter switches and the protective role of carbon. | 10th Oct 1921 | Morton \ M1.1 img059 | |
| The failure of a carbon copper type starter switch due to incomplete pedal depression. | 15th Sep 1921 | Morton \ M1.1 img060 | |
| Experiments with friction damper adjustments on the Goshawk 11 crankshaft, comparing it to the Goshawk 1. | 15th Sep 1921 | Morton \ M1.1 img061 | |
| Control mechanism for the 'Goshawk II' engine, discussing drawings and future work. | 1st Sep 1921 | Morton \ M1.1 img062 | |
| Testing and modifications for the Goshawk 11, covering the oil pump, spring drive, universal joint, and gearbox. | 23th Sep 1921 | Morton \ M1.1 img063 | |
| Outlining issues with jack pads, scored brake drums, and porous castings on induction and exhaust pipes. | 27th Sep 1921 | Morton \ M1.1 img064 | |
| Cause of induction noise in the Goshawk 11 engine, comparing it to the 40/50 HP chassis. | 30th Sep 1921 | Morton \ M1.1 img065 | |
| Comparison of the Goshawk and 40/50 cars, focusing on gearbox bearings, ride comfort, and potential 6-cylinder competitors. | 9th Sep 1921 | Morton \ M1.1 img066 | |
| Required slipper wheel diameter for the Goshawk 11, pending tests with heavier cast iron pistons. | 1st Oct 1921 | Morton \ M1.1 img067 | |
| Drawing Lec.1458 for the Goshawk II spring drive, slipper flywheel, and wheelcase. | 1st Oct 1921 | Morton \ M1.1 img068 | |
| Investigation into a 'roar' noise from the Goshawk 11 induction system. | 21th Oct 1921 | Morton \ M1.1 img069 | |
| Technical notes on Goshawk 11 (X4219) regarding clutch shudder, petrol tap, wiring, and rear axle oil filling. | 1st Oct 1921 | Morton \ M1.1 img070 | |
| Car's filler access, a rear valance for cleanliness, and lubrication of the universal joint. | 21th Oct 1921 | Morton \ M1.1 img071 | |
| On the Goshawk 11 carburetter, discussing slow running issues with the butterfly throttle and proposing a piston type throttle as a better alternative. | 1st Oct 1921 | Morton \ M1.1 img072 | |
| Drawing Lec.1459, which details a modified induction pipe for the 'Goshawk II' engine to resolve expansion issues. | 1st Oct 1921 | Morton \ M1.1 img073 | |
| Difficulties fitting shock dampers to the 40/50 HP chassis and the design of new versions for the 'Goshawk II' experimental chassis. | 8th Oct 1921 | Morton \ M1.1 img074 | |
| Investigation into the cause of a roar in the induction system of Goshawk engines. | 16th Oct 1921 | Morton \ M1.1 img075 | |
| Test results on gearbox, steering, and induction roar issues for the Goshawk 11. | 13th Oct 1921 | Morton \ M1.1 img076 | |
| Difficulties with a Lucas Starter Motor's Bendix Pinion failing to disengage on a Goshawk 11 engine. | 11th Oct 1921 | Morton \ M1.1 img077 | |
| Induction roar and starter motor issues for the Goshawk 11 engine. | 14th Oct 1921 | Morton \ M1.1 img078 | |
| Proposed design alterations for the 'Goshawk II' carburettor, including the addition of a silencer and changes to the controls. | 11th Oct 1921 | Morton \ M1.1 img079 | |
| Continued memo from R. to HS. regarding the hope of getting a simpler scheme. | 1st Oct 1921 | Morton \ M1.1 img080 | |
| Failure in an aluminium brake casting for the 'Goshawk II' and suggesting alternative materials for testing. | 18th Oct 1921 | Morton \ M1.1 img081 | |
| Material selection and steel composition for the 'Goshawk II' frames. | 12th Oct 1921 | Morton \ M1.1 img082 | |
| Dynamo options and starter switch contact design for the 'Goshawk II' electrical equipment. | 10th Oct 1921 | Morton \ M1.1 img083 | |
| Modifications to the 'Goshawk II' carburettor. | 14th Oct 1921 | Morton \ M1.1 img084 | |
| Technical memo discussing the gearbox, crankshaft damper, and pistons for the Goshawk II engine. | 10th Oct 1921 | Morton \ M1.1 img085 | |
| Design suggestions for the radiator and troubleshooting for clutch shudder and the starter motor. | 1st Oct 1921 | Morton \ M1.1 img086 | |
| Pitch of threads and suggesting modifications to make the gearing quieter. | 1st Oct 1921 | Morton \ M1.1 img087 | |
| Failures of front springs and a steering lever on a Goshawk 11 chassis during a bump test. | 1st Oct 1931 | Morton \ M1.1 img088 | |
| Design considerations and issues for various vehicle components including rockers, lubricators, plugs, and wheels. | 26th Oct 1921 | Morton \ M1.1 img089 | |
| Recommendation to have designs in hand for fitting wire wheels, which may require serious alterations. | 26th Oct 1921 | Morton \ M1.1 img090 | |
| The failure of 2.BA bolts used to retain guide tubes for the Goshawk 11 gearbox selector fork. | 26th Oct 1921 | Morton \ M1.1 img091 | |
| Potential causes and solutions for intake noise in the 'Goshawk II' engine. | 27th Oct 1921 | Morton \ M1.1 img092 | |
| From 'R.' to 'H.S.' discussing engine vibration, ignition timing, and various component improvements. | 1st Oct 1921 | Morton \ M1.1 img093 | |
| Revised specifications for the 'Goshawk II' battery ignition governor. | 1st Oct 1921 | Morton \ M1.1 img094 | |
| Test report on a Goshawk chassis bumper rig, detailing component failures. | 26th Oct 1921 | Morton \ M1.1 img095 | |
| Bumper test report on the Goshawk II chassis, listing component failure times in hours. | 26th Oct 1921 | Morton \ M1.1 img096 | |
| Bendix Pinion design, comparing it with the Marmon car's implementation and considering patent royalties. | 28th Oct 1921 | Morton \ M1.1 img097 | |
| Modifications to the 'Goshawk II' carburettor silencer and modified control gear. | 1st Oct 1921 | Morton \ M1.1 img098 | |
| Viability, cost, and testing of fitting Hartford shock absorbers to cars. | 1st Oct 1921 | Morton \ M1.1 img099 | |
| Hartford shock absorbers as an alternative on the Goshawk, with an attached blueprint for Mr. Royce. | 1st Oct 1921 | Morton \ M1.1 img100 | |
| Road test, detailing mileage, battery problems, chassis maintenance, and windscreen collapse. | 10th May 1922 | Morton \ M1.2 img001 | |
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