| Description | Date | Identifier | |
| Evaluation of dynamo machine proposals from Smith, Rotax, and C.A.V. for the Goshawk project. | 17th Oct 1921 | West Wittering \ G \ October1921 Scan9 | |
| Examination of Peto & Radford batteries and recommending a modified version for experimental testing and standardisation. | 10th Oct 1921 | West Wittering \ G \ October1921 Scan10 | |
| Battery supply and the desirable ratio of acid to plate volume. | 10th Oct 1921 | West Wittering \ G \ October1921 Scan11 | |
| Copy of a letter from Peto & Radford reporting on the condition of two returned batteries. | 8th Oct 1921 | West Wittering \ G \ October1921 Scan12 | |
| Examination report on the condition of batteries and recommendations for improvements. | 8th Oct 1921 | West Wittering \ G \ October1921 Scan13 | |
| Letter detailing improvements to the 'Bull Dog' battery and recommending its use for the 40/50 HP car. | 8th Oct 1921 | West Wittering \ G \ October1921 Scan14 | |
| Providing a table of tension values along lines of force for dynamos. | 14th Oct 1921 | West Wittering \ G \ October1921 Scan15 | |
| Critique and specification analysis of the Smith motor for the Goshawk II engine. | 17th Oct 1921 | West Wittering \ G \ October1921 Scan16 | |
| Specifications and test results for a motor, concluding it is unsuitable for the Goshawk engine. | 17th Oct 1921 | West Wittering \ G \ October1921 Scan17 | |
| Analysis of motor torque, speed, and performance characteristics under load and heat. | 17th Oct 1921 | West Wittering \ G \ October1921 Scan18 | |
| Bench test report on the Lucas E.5.R.R. (S.F.) Dynamo for the Goshawk engine. | 18th Oct 1921 | West Wittering \ G \ October1921 Scan19 | |
| Progress report on dynamo testing, noting some slight noise. | 18th Oct 1921 | West Wittering \ G \ October1921 Scan20 | |
| Recommendation to manufacture the aluminium covers for rear brakes as a single, non-detachable piece for the Goshawk 11. | 18th Oct 1931 | West Wittering \ G \ October1921 Scan21 | |
| Estimation error in the Goshawk condenser's capacity and volume, concluding it is insufficient. | 25th Oct 1931 | West Wittering \ G \ October1921 Scan22 | |
| Note comparing the capacity of a Bosch battery ignition system with mica and Goshawk condensers. | 25th Oct 1921 | West Wittering \ G \ October1921 Scan23 | |
| Lucas E.S.R.R. (S.F.) dynamo for the Goshawk engine, detailing its specifications and a noise issue. | 27th Oct 1931 | West Wittering \ G \ October1921 Scan24 | |
| Performance analysis of a Rotax dynamo, comparing its output curves, voltage, and current to specifications. | 27th Oct 1921 | West Wittering \ G \ October1921 Scan25 | |
| The performance of a Lucas control dynamo, comparing it to a Rotax dynamo. | 27th Oct 1921 | West Wittering \ G \ October1921 Scan26 | |
| The failure of a Goshawk 11 engine's worm wheel, requesting a design modification for better oiling. | 28th Oct 1921 | West Wittering \ G \ October1921 Scan28 | |
| Sending three samples of alternative side steering tube joints to Mr. Royce for testing. | 28th Oct 1921 | West Wittering \ G \ October1921 Scan29 | |
| Recommendation to modify the generator cradle on a Goshawk II engine to prevent excessive wear on the driving pinion. | 28th Oct 1931 | West Wittering \ G \ October1921 Scan30 | |
| Unsatisfactory performance of oilless bushes on front springs for the Goshawk II project. | 1st Oct 1931 | West Wittering \ G \ October1921 Scan31 | |
| Summary of cable communications with Springfield regarding the 'American Programme' and development of a pilot jet and vaporizing scheme. | 31th Oct 1921 | West Wittering \ G \ October1921 Scan32 | |
| Alternative design for the Goshawk 11 thrust bearing and improving the axle casing for oil retention. | 1st Oct 1921 | West Wittering \ G \ October1921 Scan33 | |
| The C.A.V. motor for the Goshawk II. | 31th Oct 1921 | West Wittering \ G \ October1921 Scan34 | |
| Specifications and brake test results for a motor, detailing dimensions, weight, and electrical characteristics. | 1st Oct 1921 | West Wittering \ G \ October1921 Scan35 | |
| Technical analysis and comparison of motor performance for the Goshawk engine under cold conditions. | 31th Oct 1921 | West Wittering \ G \ October1921 Scan36 | |
| The performance testing of a motor, comparing it to C.A.V. motors and discussing its use on a Goshawk chassis. | 31th Oct 1921 | West Wittering \ G \ October1921 Scan37 | |
| Telegram from Elliott regarding the suitability of an 8.15 outside diameter slipper flywheel for a Goshawk two engine. | 1st Oct 1924 | West Wittering \ G \ October1921 Scan40 | |
| Communication regarding the automatic cut-out switch for the 'Goshawk II' Dynamo. | 3rd Oct 1921 | West Wittering \ G \ October1921 Scan41 | |
| Ongoing complaints about thick leaf springs and the comparative benefits of using thin leaf springs. | 1st Oct 1921 | West Wittering \ G \ October1921 Scan42 | |
| Use of Hyatt roller bearings in gearboxes, noting their successful use by Americans. | 10th Oct 1921 | West Wittering \ G \ October1921 Scan43 | |
| Recommending Le Carbone's brushes over Morgan Crucible's for dynamos and motors based on practical experience. | 1st Oct 1921 | West Wittering \ G \ October1921 Scan44 | |
| Suitability of different sparking plugs, including those from Sphinx and Lodge. | 1st Oct 1921 | West Wittering \ G \ October1921 Scan45 | |
| Telegram regarding short running tests on a Goshawk engine's speed jets. | 5th Oct 1921 | West Wittering \ G \ October1921 Scan46 | |
| The Goshawk II crankshaft pinion spring drive and slipper flywheel. | 6th Oct 1921 | West Wittering \ G \ October1921 Scan47 | |
| Outlining two schemes for modifying the 'Goshawk II' engine's induction pipe to resolve a hot spot issue. | 7th Oct 1921 | West Wittering \ G \ October1921 Scan48 | |
| Design progress and alterations for various components of the 'Goshawk' project. | 10th Oct 1921 | West Wittering \ G \ October1921 Scan49 | |
| The 'Goshawk II' crankshaft pinion spring drive, discontinuing one scheme in favour of another with a slipper flywheel. | 10th Oct 1921 | West Wittering \ G \ October1921 Scan50 | |
| Design, oil retention, and lubrication of a universal joint compared to Spicer and Essex models. | 10th Oct 1921 | West Wittering \ G \ October1921 Scan51 | |
| Deficiencies in carburettors and starting devices and proposing a new design. | 10th Oct 1921 | West Wittering \ G \ October1921 Scan52 | |
| Mixture strength, induction system modifications, and carburettor alterations. | 10th Oct 1921 | West Wittering \ G \ October1921 Scan53 | |
| Modifications and improvements for dynamo and motor armature windings. | 10th Oct 1921 | West Wittering \ G \ October1921 Scan54 | |
| Request to ascertain the attractive force between an armature and pole piece of a dynamo and motor for given surface densities. | 12th Oct 1921 | West Wittering \ G \ October1921 Scan55 | |
| Telegram confirmation regarding a modified scheme for the Goshawk two carburettor. | 11th Oct 1921 | West Wittering \ G \ October1921 Scan56 | |
| Telegram from Royce regarding Hives' suggestion for testing a double port component by isolating one and blanking off others. | 12th Oct 1921 | West Wittering \ G \ October1921 Scan57 | |
| Progress on the undershield and half time wheelcase for the Goshawk II engine. | 10th Oct 1921 | West Wittering \ G \ October1921 Scan58 | |
| The electrical equipment for the Goshawk II, discussing the dynamo switch placement and a redesigned combined ignition and lighting switch. | 14th Oct 1921 | West Wittering \ G \ October1921 Scan59 | |
| Alteration to the Goshawk II cylinder head's double inlet and exhaust ports to reduce resonance. | 15th Oct 1921 | West Wittering \ G \ October1921 Scan60 | |
| Design changes for the 'Goshawk II' engine's wheelcase, gear, and fan. | 1st Oct 1921 | West Wittering \ G \ October1921 Scan61 | |
| Conveying Mr. Royce's request to test the 40/50 HP engine's top water connection. | 17th Oct 1921 | West Wittering \ G \ October1921 Scan62 | |
| Modifications to the 'Goshawk II' valve gear spring washer. | 17th Oct 1921 | West Wittering \ G \ October1921 Scan63 | |
| Modifications to the 'Goshawk II' carburettor to reduce noise and improve floatchamber performance. | 1st Oct 1921 | West Wittering \ G \ October1921 Scan64 | |
| From R. to HS. discussing adjustments to the butterfly throttle and hand control. | 17th Oct 1921 | West Wittering \ G \ October1921 Scan65 | |
| Cause and potential fixes for a broken bolt on a 'Goshawk II' gearbox side shaft. | 10th Oct 1921 | West Wittering \ G \ October1921 Scan66 | |
| Design sketch for a Goshawk II gearbox spigot bearing with notes on alternative materials. | 18th Feb 1931 | West Wittering \ G \ October1921 Scan67 | |
| Failure of the 'Goshawk II' hand brake and a proposed design change to the brake shoe. | 19th Oct 1921 | West Wittering \ G \ October1921 Scan68 | |
| Springing and shock damper design for the 40/50 HP model. | 10th Oct 1921 | West Wittering \ G \ October1921 Scan69 | |
| From R. to H.S. requesting experimental attention for the lubrication of shock dampers and connections. | 1st Oct 1921 | West Wittering \ G \ October1921 Scan70 | |
| Bendix pinion for the Goshawk II, discussing issues with thread pitch, gearing noise, and manufacturing systems. | 1st Oct 1921 | West Wittering \ G \ October1921 Scan71 | |
| Superior workmanship of American gear cutting compared to English methods. | 18th Oct 1921 | West Wittering \ G \ October1921 Scan72 | |
| From 'E' to 'EFC' detailing Mr. Royce's decisions on sourcing and specifications for batteries for the 'Goshawk II' chassis. | 19th Oct 1921 | West Wittering \ G \ October1921 Scan73 | |
| Ignition plug performance and lubrication issues on the 6 EX experimental car. | 19th Oct 1921 | West Wittering \ G \ October1921 Scan74 | |
| Lubrication issues with spring shackles, rear shock dampers, and a water leak on chassis 6 EX. | 1st Oct 1921 | West Wittering \ G \ October1921 Scan75 | |
| Design modifications for the 'Goshawk II' carburettor and referencing an accompanying blueprint. | 1st Oct 1921 | West Wittering \ G \ October1921 Scan76 | |
| Drawing for lettering on the 'Goshawk II' switchbox and instructions for its reduction. | 11th Oct 1921 | West Wittering \ G \ October1921 Scan77 | |
| From Mr. Royce detailing new dimensions for insulation on 'Goshawk II' electrical fittings. | 21th Oct 1921 | West Wittering \ G \ October1921 Scan78 | |
| Alterations required for the 'Goshawk II'. | 1st Oct 1921 | West Wittering \ G \ October1921 Scan79 | |
| The unsuitability of ball thrust bearings for the high-speed Goshawk II engine. | 26th Oct 1921 | West Wittering \ G \ October1921 Scan80 | |
| Use of Hoffman roller bearings to reduce noise in the Goshawk II gear box and a proposed fix for a broken side shaft bolt. | 28th Oct 1931 | West Wittering \ G \ October1921 Scan81 | |
| The dispatch of drawings for the 'Goshawk II' undershield. | 1st Oct 1921 | West Wittering \ G \ October1921 Scan82 | |
| Blueprint for the Goshawk II distribution board and cut-out. | 29th Oct 1921 | West Wittering \ G \ October1921 Scan83 | |
| Incomplete drawing for a 'Goshawk II' valve gear rocker, confirming the addition of an oil hole. | 29th Oct 1921 | West Wittering \ G \ October1921 Scan84 | |
| Telegram from Royce to Hives regarding a defective dashboard and arranging for a replacement. | 1st Sep 1921 | West Wittering \ G \ September1921 Scan0 | |
| The modification and standardisation of 'Goshawk II' cylinder plugs. | 1st Sep 1921 | West Wittering \ G \ September1921 Scan1 | |
| Letter concerning drawings for the 'Goshawk II' throttle and ignition control gear. | 1st Sep 1921 | West Wittering \ G \ September1921 Scan2 | |
| Drawings for 'Goshawk II' controls and suggesting temporary manufacture from brass castings. | 5th Sep 1921 | West Wittering \ G \ September1921 Scan3 | |
| Modifications to the 'Goshawk II' control gear accelerator pedal and shaft. | 1st Sep 1921 | West Wittering \ G \ September1921 Scan4 | |
| Oil leak in the Goshawk II propeller shaft, attributing it to a vacuum effect and proposing a solution. | 1st Sep 1921 | West Wittering \ G \ September1921 Scan5 | |
| Telegram received by telephone regarding the assembly of steel and fabric discs. | 7th Sep 1921 | West Wittering \ G \ September1921 Scan6 | |
| Telegram received by telephone concerning a joint of the largest possible diameter. | 9th Jul 1918 | West Wittering \ G \ September1921 Scan7 | |
| Telegram from Royce enquiring about Hives' expected arrival time at Wittering with a Hawk engine. | 8th Sep 1921 | West Wittering \ G \ September1921 Scan8 | |
| Potential trial, weak patents, and mechanical action of the 'Flexo' Gear Box. | 9th Sep 1921 | West Wittering \ G \ September1921 Scan9 | |
| To R.R. of America regarding the freezing of filters in the back tank, a problem unfamiliar due to gentle English winters. | 7th Sep 1921 | West Wittering \ G \ September1921 Scan10 | |
| The 'Goshawk II' propeller shaft, warning that drilling it would destroy the vacuum for oil extraction. | 9th Sep 1921 | West Wittering \ G \ September1921 Scan11 | |
| Hand-drawn schematic showing a temporary modification to the Goshawk II Propeller Shaft. | 7th Sep 1921 | West Wittering \ G \ September1921 Scan12 | |
| Sending drawing Lec.1445 for a new battery box lid fastening, approved by Mr. Royce, for testing. | 1st Sep 1921 | West Wittering \ G \ September1921 Scan13 | |
| Request to obtain particulars of standard Micarta Bakelite sheet and tubing for experimental work. | 12th Sep 1921 | West Wittering \ G \ September1921 Scan14 | |
| Modifications to the 'Goshawk II' crankshaft to deal with torsional effects. | 9th Sep 1921 | West Wittering \ G \ September1921 Scan15 | |
| Cause of noise in the 'Goshawk II' gearbox, considering the reverse pinion and ball bearings. | 9th Sep 1921 | West Wittering \ G \ September1921 Scan16 | |
| Drawing No.Lec.1446 showing five schemes for the 'Goshawk II' Clutch plate. | 17th Sep 1921 | West Wittering \ G \ September1921 Scan17 | |
| Requesting torsional deflection data for the Goshawk II crankshaft and particulars of its springs. | 1st Sep 1921 | West Wittering \ G \ September1921 Scan18 | |
| Drawing No. LeC. 1448 for the 'Goshawk II' carburettor, detailing a revision to the petrol strainer and noting an objection from Mr. Royce. | 1st Sep 1921 | West Wittering \ G \ September1921 Scan19 | |
| Design specifications for a cast iron piston for the Goshawk II engine. | 1st Sep 1921 | West Wittering \ G \ September1921 Scan20 | |
| Decision to retain the parallel form of connecting rod for the Goshawk II engine. | 16th Sep 1921 | West Wittering \ G \ September1921 Scan21 | |
| Modifications to the Goshawk II petrol tank and brake levers. | 9th Sep 1921 | West Wittering \ G \ September1921 Scan22 | |
| Material choice for the 'Goshawk II' distribution board, changing from Bakelite to aluminium. | 9th Sep 1921 | West Wittering \ G \ September1921 Scan23 | |
| Drawings for the 'Goshawk II' crankshaft spring drive and an alternative scheme to overcome friction issues. | 21th Sep 1921 | West Wittering \ G \ September1921 Scan25 | |
| With sketches suggesting a design improvement for the spring anchorage on a new type Lucas cutout. | 1st Sep 1921 | West Wittering \ G \ September1921 Scan26 | |
| Alteration of the Goshawk II oil pump casing from aluminium to gunmetal. | 1st Sep 1921 | West Wittering \ G \ September1921 Scan27 | |
| | | | |
