| Description | Date | Identifier | |
| Alteration instructions for the main throttle closing spring on a 40/50 chassis. | 16th Dec 1922 | Box 183 \ M22 img173 | |
| Exhaust valve failures and requesting tests on different seat angles and clearances. | 27th Dec 1922 | Box 183 \ M22 img174 | |
| Causes of burnt valves in Goshawk engines and potential solutions. | 29th Dec 1932 | Box 183 \ M22 img175 | |
| Practice of pinning piston rings and referencing the Hawk engine. | 11th Aug 1930 | Box 183 \ M22 img176 | |
| Reducing torque reaction vibration on the 40/50 HP chassis. | 1st Oct 1923 | Box 183 \ M22 img177 | |
| From 'E' to 'Hs' relaying a request from Mr. Royce for distance tubes for a rigid feet experiment on car 6.EX. | 27th Sep 1923 | Box 183 \ M22 img178 | |
| Urgent dispatch of parts for a torque reaction experiment on the 6.EX car. | 29th Sep 1923 | Box 183 \ M22 img179 | |
| The tractive resistance of a car and the expected increase in speed from an increase in power. | 1st Feb 1924 | Box 183 \ M22 img180 | |
| Comparing the riding and springing characteristics of car models 1 EX and 6 EX. | 29th Aug 1920 | Box 183 \ M22 img181 | |
| Comparison of two experimental cars (1 EX and 6 EX) with different back axle ratios, focusing on fuel consumption and performance. | 23th Aug 1920 | Box 183 \ M22 img182 | |
| Comparison of steering performance between two experimental cars, 1 EX and 6 EX, noting stability and handling on crowned roads. | 23th Aug 1920 | Box 183 \ M22 img183 | |
| Comparing a 1 EX starter with a 6 EX starter, noting increased noise and suggesting improvements. | 24th Aug 1920 | Box 183 \ M22 img184 | |
| Comparing the ignition systems of cars 1 EX and 6 EX, noting differences in timing and potential impact on petrol consumption. | 24th Aug 1920 | Box 183 \ M22 img185 | |
| Complaint about the falling standards of work and finish on chassis 6 EX compared with 1 EX. | 25th Aug 1920 | Box 183 \ M22 img186 | |
| The difficulty of pressurizing the fuel tank due to a misaligned priming cock or defective piping. | 23th Aug 1920 | Box 183 \ M22 img187 | |
| The deterioration of workmanship, poor engine compression, and dynamo belt tension issues on a car. | 1st Sep 1920 | Box 183 \ M22 img188 | |
| Dynamo suspension clip fault and an investigation into a knock in the transmission. | 30th Aug 1920 | Box 183 \ M22 img189 | |
| Cause of knocks in lower gears and potential solutions involving couplings, propeller shafts, and torque tubes. | 30th Aug 1920 | Box 183 \ M22 img190 | |
| Summary of post-war design and development programmes from 1918-1923, listing various models and key dates. | 30th Aug 1920 | Box 183 \ M22 img191 | |
| List of proposed new car models with their technical specifications. | 14th Jul 1922 | Box 183 \ M22 img192 | |
| Inquiry from Mr. Royce about the effect of radius rods on the steering of the new 40/50 car over rough roads. | 14th Jul 1922 | Box 183 \ M22 img193 | |
| Frame modifications for the 40/50 model to accommodate different engine, brake, and suspension setups for export. | 19th Aug 1922 | Box 183 \ M22 img194 | |
| Extract discussing the commencement of work on experimental export chassis and associated parts. | 25th Aug 1922 | Box 183 \ M22 img195 | |
| Drawing for a new front axle with front wheel brakes and its patentability against the Hotchkiss patent. | 28th Aug 1922 | Box 183 \ M22 img196 | |
| Potential causes and experimental solutions for knocking gears in an engine's camshaft drive. | 15th Sep 1922 | Box 183 \ M22 img197 | |
| Methods to address engine crankshaft speed irregularities, including flywheel adjustments and experimental belt drives. | 19th Sep 1922 | Box 183 \ M22 img198 | |
| Production strategy for the 'Curlew' model and the standardisation of parts for 40/50 improvements. | 19th Sep 1922 | Box 183 \ M22 img199 | |
| Concluding a discussion on standardizing processes between the Drawing Offices and the Works. | 14th Sep 1922 | Box 183 \ M22 img200 | |
| Production strategies for improvements to the 40/50 model, including the 'Curlew' variant with front-wheel brakes and an overhead valve engine. | 14th Sep 1922 | Box 183 \ M22 img201 | |
| Front spring shackle, dumb iron, and frame depth for the Stork, Curlew, and Vulture projects. | 9th Sep 1922 | Box 183 \ M22 img202 | |
| The final design of the 'Stork' frame, referencing drawing N.sch. 1324. | 16th Sep 1922 | Box 183 \ M22 img203 | |
| Outlining modifications for the 'Heron' chassis, including front wheel brakes, a new exhaust system, and engine alterations. | 11th Sep 1922 | Box 183 \ M22 img204 | |
| Modifications required for the 'Heron' model to fit front-wheel brakes and associated systems. | 18th Sep 1922 | Box 183 \ M22 img205 | |
| Preliminary arrangement of the 'Stork' pneumatic brake system and required components. | 30th Sep 1922 | Box 183 \ M22 img206 | |
| Proposed modification to the 'Stork' exhaust system to accommodate front wheel brakes. | 30th Sep 1922 | Box 183 \ M22 img207 | |
| The testing of an air pump driven by a camshaft for a four-wheel brake system. | 14th Oct 1922 | Box 183 \ M22 img208 | |
| Diagram illustrating the drilling positions for pump and camshaft wheel coupling flanges. | 14th Oct 1922 | Box 183 \ M22 img209 | |
| The testing of a camshaft-driven air pump for a four-wheel brake scheme. | 14th Oct 1922 | Box 183 \ M22 img210 | |
| Continued document page discussing humps on one revolution of the camshaft, referring to original sketches. | 16th Oct 1922 | Box 183 \ M22 img211 | |
| The fitting of trough-type side carriers and Barker design dipping head lights to specific car models. | 16th Oct 1922 | Box 183 \ M22 img212 | |
| The completion of front-wheel brake designs and the potential move to a mechanical servo system. | 10th Sep 1922 | Box 183 \ M22 img213 | |
| Completion of front wheel brake designs and the possibility of changing from a compressed air to a mechanical servo system. | 19th Oct 1922 | Box 183 \ M22 img214 | |
| Accompanying drawing Lec.1639, detailing an automatic air pump cut-out device for the 'Heron' model's four-wheel brakes. | 12th Oct 1922 | Box 183 \ M22 img215 | |
| Drawing Lec 1639 for an air pump control device on the 'Heron'. | 12th Oct 1922 | Box 183 \ M22 img216 | |
| Clarifying the codenames 'Heron' and 'Seagull' for experimental chassis, later known as the Phantom I. | 12th Oct 1922 | Box 183 \ M22 img217 | |
| Assigning the codenames 'heron' and 'seagull' to two experimental chassis. | 12th Oct 1922 | Box 183 \ M22 img218 | |
| Modifications for the 'Stork' pneumatic brakes system, including diaphragm trips and dashboard adjustments. | 14th Oct 1922 | Box 183 \ M22 img219 | |
| Modifications for the pneumatic brake system on the 'Stork' model. | 14th Oct 1922 | Box 183 \ M22 img220 | |
| Cancellation of pneumatic brakes and the decision to proceed with experimental air brakes for a four-wheel braking system. | 18th Oct 1922 | Box 183 \ M22 img221 | |
| Adjustments to the cams of the front wheel brakes. | 19th Oct 1922 | Box 183 \ M22 img222 | |
| Shackling of front springs in conjunction with front wheel brakes, requesting a test on a Goshawk model. | 23th Oct 1922 | Box 183 \ M22 img223 | |
| Drawings for an air pump for four-wheel brakes, noting a required modification to springs. | 19th Oct 1922 | Box 183 \ M22 img224 | |
| Experimental implementation of pneumatic brakes on the 'HERON' chassis. | 1st Nov 1922 | Box 183 \ M22 img225 | |
| Modifications to the 'Heron' model's front wheel brakes and new engine feet. | 17th Nov 1922 | Box 183 \ M22 img226 | |
| Heron four-wheel brakes, specifically the hand brake operating gear and servo motor. | 18th Nov 1922 | Box 183 \ M22 img227 | |
| Revised pedal gear for the 'Stork' model, compatible with either pneumatic brakes or a new servo system. | 19th Oct 1922 | Box 183 \ M22 img228 | |
| 26-point list of work required for the 'Stork' (air brakes) and 'Heron' (servo brakes) chassis models. | 1st Nov 1922 | Box 183 \ M22 img229 | |
| The 'Heron' servo motor for brakes, including a design scheme and material suggestions. | 22th Nov 1922 | Box 183 \ M22 img230 | |
| Design, materials, and manufacturing of a servo motor for brakes on a 3-speed gearbox. | 22th Nov 1922 | Box 183 \ M22 img231 | |
| Conclusions from an investigation into front spring anchorage and steering geometry. | 30th Nov 1922 | Box 183 \ M22 img232 | |
| Steering mechanism improvements with semi-irreversible steering for Goshawk, Heron, and Seagull models. | 1st Dec 1922 | Box 183 \ M22 img233 | |
| 'Seagull' engine's capacity, bore, and stroke dimensions. | 19th Dec 1922 | Box 183 \ M22 img234 | |
| Capacity and specifications of the 'Seagull' P1 prototype engine. | 12th Sep 1922 | Box 183 \ M22 img235 | |
| Request for information on the weight of the Goshawk engine and the 40/50 to estimate the weight of the 'Seagull' engine. | 11th Dec 1922 | Box 183 \ M22 img236 | |
| Telegram from Basil Johnson to Hives requesting particulars on the differences between the Lark, Heron and Seagull projects. | 20th Dec 1922 | Box 183 \ M22 img237 | |
| Development of the Goshawk and Seagull models, specifically the axle and gearbox design. | 21th Dec 1922 | Box 183 \ M22 img238 | |
| Gearbox and axle redesigns for the Goshawk and Seagull models, noting progress on experimental production. | 29th Dec 1922 | Box 183 \ M22 img239 | |
| Induction pipe arrangements for various engines and proposing fuel distribution tests. | 29th Dec 1922 | Box 183 \ M22 img240 | |
| Relocation of the brake servo motor to the right-hand side of the gearbox for the 'Heron' model. | 30th Dec 1922 | Box 183 \ M22 img241 | |
| Urgent requirement for a body for the 'Stork' and 'Heron' chassis. | 6th Jan 1923 | Box 183 \ M22 img242 | |
| The preparation and selection of car bodies for 'Stork' and 'Heron' models. | 1st Jan 1923 | Box 183 \ M22 img243 | |
| Proposal for a light speed body for 'Stork' and 'Heron' models. | 10th Jan 1923 | Box 183 \ M22 img244 | |
| Assessing the condition of car 6-EX, noting noisy gears and mentioning future models 'Stork', 'Heron' and 'Seagull'. | 10th Jan 1923 | Box 183 \ M22 img245 | |
| Proposal for a sports touring body to be fitted to the 'Stork' and 'Heron' chassis, detailing modifications and features. | 13th Jan 1923 | Box 183 \ M22 img246 | |
| Car finish, color schemes, wheel specifications, and preferred coachbuilders. | 13th Jan 1923 | Box 183 \ M22 img247 | |
| Front axle pivot lean and steering inclination on Stork and Heron models. | 13th Jan 1923 | Box 183 \ M22 img248 | |
| Query requesting particulars of a steering mechanism to investigate stiffness and for comparative calculations. | 17th Jan 1923 | Box 183 \ M22 img249 | |
| Development policy for future experimental car models 'Heron' and 'Seagull'. | 17th Jan 1923 | Box 183 \ M22 img250 | |
| Policy statement on fitting front wheel brakes to the 40/50 chassis. | 18th Jan 1923 | Box 183 \ M22 img251 | |
| Confirming the decision to halt design work on the Heron chassis and prioritize the Seagull project. | 18th Jan 1923 | Box 183 \ M22 img252 | |
| Future development strategy for the 40/50, Heron, and Seagull models. | 19th Jan 1923 | Box 183 \ M22 img253 | |
| Proposed sports body for the 'Stork' chassis, its suitability for other models, and the coachbuilding process. | 20th Jan 1923 | Box 183 \ M22 img254 | |
| Production of a speed body for the 'Stork' project, involving Park Wards and other coachbuilders. | 20th Jan 1923 | Box 183 \ M22 img255 | |
| Private internal memo regarding the sourcing of a new sports body for the 'Stork' chassis and the necessary confidentiality required with coachbuilders. | 23th Jan 1923 | Box 183 \ M22 img256 | |
| Clarifying a body design is for experimental purposes and requires committee consideration for permanent adoption. | 26th Jan 1923 | Box 183 \ M22 img257 | |
| The decision to abandon the 'Stork' and 'Heron' models and repurpose their parts for the 'Seagull' model. | 26th Jan 1923 | Box 183 \ M22 img258 | |
| Testing a front axle with brakes on the 'Stork' chassis and a pneumatic brake mechanism. | 29th Jan 1923 | Box 183 \ M22 img259 | |
| To stop work on the Heron & Stork projects and prioritize the Seagull P1 prototype. | 29th Jan 1923 | Box 183 \ M22 img260 | |
| Basic tests for engine torque reaction and vibrations. | 23th Sep 1933 | Box 183 \ M22 img261 | |
| Measuring engine torque and fitting a spring-controlled friction damping system. | 22th Sep 1923 | Box 183 \ M22 img262 | |
| Various design schemes sent out, including ignition wiring and torque reaction dampers. | 13th Oct 1923 | Box 183 \ M22 img263 | |
| Solutions for exposed valve stems and tappets on chassis 12-EM after a 10,000-mile trial run. | 29th Jan 1924 | Box 183 \ M22 img264 | |
| Secret memorandum outlining a visit to W.W. with several cars and components for testing and approval. | 17th Oct 1924 | Box 183 \ M22 img265 | |
| From CJ to Hs asking for details about a meeting with Mr. Royce in West Wittering. | 28th Apr 1925 | Box 183 \ M22 img266 | |
| From Hs. to C.J. detailing a visit to West Wittering to test cars and discuss steering, coupling, and brake issues. | 29th Apr 1925 | Box 183 \ M22 img267 | |
| Modifications to the bonnet and radiator line on the 1st Phantom I Experimental chassis (7EX) following criticism from Mr. Royce. | 6th Jul 1925 | Box 183 \ M22 img268 | |
| Recommendation concerning the retention, testing, and disposal of various American cars. | 23th Nov 1920 | Box 183 \ M22 img269 | |
| Heating of the carburation system for the 40/50 HP chassis. | 3rd Jan 1921 | Box 183 \ M22 img270 | |
| Engine starting difficulties in cold weather, issues with direct gear starters, and the design of a 3-speed gearbox. | 3rd Jan 1921 | Box 183 \ M22 img271 | |
| Internal memorandum discussing the production, pricing, and material strategy for the 'Goshawk II' project. | 18th Jul 1921 | Morton \ M1.1 img001 | |
| | | | |
