| Description | Date | Identifier | |
| Particulars of friction devices on 20 HP. pivots, with and without front wheel brakes. | 1st Aug 1925 | West Wittering \ N \ July1925-September1925 Scan124 | |
| Steering issues, including lightness, wobble, and proposed solutions for chassis 9-G-111. | 8th Sep 1925 | West Wittering \ N \ July1925-September1925 Scan125 | |
| Tests conducted at Brooklands track with a 'V' series car. | 25th Aug 1925 | West Wittering \ N \ July1925-September1925 Scan126 | |
| Car cooling tests conducted at Brooklands, focusing on ventilation and fan efficiency. | 25th Sep 1924 | West Wittering \ N \ July1925-September1925 Scan127 | |
| Tests related to the fan drive and radiator shutter performance. | 25th Sep 1924 | West Wittering \ N \ July1925-September1925 Scan128 | |
| Method of conducting car performance tests using a three-pen chronograph. | 25th Aug 1925 | West Wittering \ N \ July1925-September1925 Scan129 | |
| The objections and applications of a testing instrument, particularly for braking tests. | 25th Aug 1925 | West Wittering \ N \ July1925-September1925 Scan130 | |
| High-speed steering wobbles and tests with hydraulic damping. | 25th Aug 1925 | West Wittering \ N \ July1925-September1925 Scan131 | |
| Tests to eliminate high-speed steering wobbles with different tyre pressures and damping. | 25th Aug 1925 | West Wittering \ N \ July1925-September1925 Scan132 | |
| Comparing wobble amplitude between balloon tyres and high pressure tyres. | 25th Sep 1924 | West Wittering \ N \ July1925-September1925 Scan133 | |
| Using glycerine as a hydraulic element and testing for car wobbles at speed. | 25th Aug 1925 | West Wittering \ N \ July1925-September1925 Scan134 | |
| 20 HP Dynamo, specifically investigating a 19 slot, 57 coil armature. | 26th Aug 1925 | West Wittering \ N \ July1925-September1925 Scan135 | |
| Continuing the analysis of performance curves for standard and special armatures with varying air gaps. | 26th Sep 1925 | West Wittering \ N \ July1925-September1925 Scan136 | |
| Continuation comparing the performance of 19-slot armatures with standard ones. | 26th Aug 1925 | West Wittering \ N \ July1925-September1925 Scan137 | |
| Continuation detailing the performance of a 19-slot armature compared to a 29-slot design. | 25th Sep 1924 | West Wittering \ N \ July1925-September1925 Scan138 | |
| Performance graph of a 20 HP dynamo showing output with various main brush positions and armature types. | 28th Aug 1925 | West Wittering \ N \ July1925-September1925 Scan139 | |
| Blank document page with a red 'Print Room' stamp. | 28th Aug 1925 | West Wittering \ N \ July1925-September1925 Scan140 | |
| Tests conducted to eliminate high-speed steering wobbles using hydraulic damping. | 27th Aug 1925 | West Wittering \ N \ July1925-September1925 Scan141 | |
| Shock absorbers, comparing standard models with hydraulic alternatives and testing their effect on tyre wobble. | 27th Aug 1925 | West Wittering \ N \ July1925-September1925 Scan142 | |
| Testing wheel wobble caused by the synchronisation of out-of-balance front wheels. | 27th Aug 1925 | West Wittering \ N \ July1925-September1925 Scan143 | |
| Absence of designs for a damped pendulum lever and a cutout for the 20 HP cars. | 27th Aug 1925 | West Wittering \ N \ July1925-September1925 Scan144 | |
| Petrol filters for 20 HP & 40/50 HP models, discussing issues with monel metal gauze and debris. | 27th Aug 1925 | West Wittering \ N \ July1925-September1925 Scan145 | |
| Comparing petrol filter setups and issues across various car models. | 27th Aug 1925 | West Wittering \ N \ July1925-September1925 Scan146 | |
| Design and specifications for petrol filters and rear fuel tanks. | 20th Aug 1925 | West Wittering \ N \ July1925-September1925 Scan147 | |
| Design, materials, and reliability of carburetter fuel filters. | 11th Aug 1920 | West Wittering \ N \ July1925-September1925 Scan148 | |
| Solutions for servo brake judder on 20.HP and 40/50 models, including changes to cams and adding a dash-pot. | 25th Aug 1925 | West Wittering \ N \ July1925-September1925 Scan149 | |
| The luggage grid, body guard position, and special brackets for different body lengths. | 26th Aug 1925 | West Wittering \ N \ July1925-September1925 Scan150 | |
| Staffing for aero engine work, confirming the engagement of an assistant with technical training. | 28th Aug 1925 | West Wittering \ N \ July1925-September1925 Scan151 | |
| Summary of personal details, education, and experience for Arthur Alexander Rubbra. | 1st Aug 1925 | West Wittering \ N \ July1925-September1925 Scan152 | |
| Increasing the power of the Eagle engine. | 1st Aug 1925 | West Wittering \ N \ July1925-September1925 Scan153 | |
| Power tests for the Eagle engine, comparing different configurations to increase power. | 26th Aug 1925 | West Wittering \ N \ July1925-September1925 Scan154 | |
| Camshaft comparison between the Eagle Vlll and Eagle lX models. | 25th Sep 1924 | West Wittering \ N \ July1925-September1925 Scan155 | |
| Carburetter comparison tests for Eagle engines with different camshafts, pistons and compression ratios. | 1st Aug 1925 | West Wittering \ N \ July1925-September1925 Scan156 | |
| Comparing carburettors and compression ratios on Eagle Vlll and Eagle IX engines. | 1st Aug 1925 | West Wittering \ N \ July1925-September1925 Scan157 | |
| Comparing engine power output based on different compression ratios and carburettor setups. | 1st Aug 1925 | West Wittering \ N \ July1925-September1925 Scan158 | |
| Comparing the performance of Eagle VIII and Eagle IX engine carburetters, proposing future improvements and investigating valve bounce. | 25th Sep 1924 | West Wittering \ N \ July1925-September1925 Scan159 | |
| Engine testing, focusing on fuel mixtures and variations in compression ratios. | 1st Aug 1925 | West Wittering \ N \ July1925-September1925 Scan160 | |
| The theoretical increase in power for a given increase in compression ratio. | 1st Mar 1925 | West Wittering \ N \ July1925-September1925 Scan161 | |
| Comparing B.M.E.P. and power curves for Condor and Eagle engines under different configurations. | 25th Sep 1924 | West Wittering \ N \ July1925-September1925 Scan162 | |
| Performance comparison graph for Eagle VIII and Eagle IX camshafts. | 25th Sep 1924 | West Wittering \ N \ July1925-September1925 Scan164 | |
| Performance comparison graph for different carburetter setups, plotting B.HP and B.M.E.P. against R.P.M. | 29th Aug 1925 | West Wittering \ N \ July1925-September1925 Scan165 | |
| Performance comparison graph for different carburettor configurations, plotting B.HP and B.M.E.P. against R.P.M. | 29th Aug 1925 | West Wittering \ N \ July1925-September1925 Scan166 | |
| Performance graph comparing different carburettor configurations, plotting Brake Horsepower and Brake Mean Effective Pressure against engine Revolutions Per Minute. | 29th Aug 1925 | West Wittering \ N \ July1925-September1925 Scan167 | |
| Compression ratio comparison curves for the Eagle IX engine, plotting B.HP and B.M.E.P. against R.P.M. | 29th Aug 1925 | West Wittering \ N \ July1925-September1925 Scan168 | |
| Performance graph comparing engine BHP and B.M.E.P. at different RPMs for various compression ratios. | 6th Jul 1925 | West Wittering \ N \ July1925-September1925 Scan169 | |
| Graph comparing engine performance curves for different carburettor and camshaft configurations. | 6th Jul 1925 | West Wittering \ N \ July1925-September1925 Scan170 | |
| Graph plotting actual and theoretical performance curves (BHP and BMEP vs RPM) for an Eagle IX engine. | 1st Aug 1925 | West Wittering \ N \ July1925-September1925 Scan171 | |
| Proposing a visit to West Wittering to demonstrate experiments on a car with steering wobbles. | 1st Aug 1925 | West Wittering \ N \ July1925-September1925 Scan173 | |
| Tests on high-speed steering wobbles on an old-type axle. | 1st Aug 1925 | West Wittering \ N \ July1925-September1925 Scan174 | |
| The failure of 20 HP wing stays during a 10,000-mile test in France. | 25th Sep 1924 | West Wittering \ N \ July1925-September1925 Scan175 | |
| The failure of a rear spring on car 9-G-111 during a 10,000-mile test. | 29th Aug 1925 | West Wittering \ N \ July1925-September1925 Scan176 | |
| Report from G.W. Hancock concerning a broken Near Side Rear spring on chassis 9-GIII. | 27th Aug 1925 | West Wittering \ N \ July1925-September1925 Scan177 | |
| Theory on high-speed steering wobbles caused by conical precession and a proposal for a testing apparatus. | 29th Aug 1925 | West Wittering \ N \ July1925-September1925 Scan178 | |
| High-speed steering wobbles using an axle fitted with Michelin wheels. | 29th Aug 1925 | West Wittering \ N \ July1925-September1925 Scan179 | |
| The efficiency of a large diameter nut and worm for a steering system. | 12th Jun 1925 | West Wittering \ N \ July1925-September1925 Scan180 | |
| The efficiency and friction of a thread and nut under load, particularly regarding reverse efficiency. | 12th Jun 1925 | West Wittering \ N \ July1925-September1925 Scan181 | |
| High-speed steering wobbles for a centre point axle fitted with disc wheels. | 1st Aug 1925 | West Wittering \ N \ July1925-September1925 Scan182 | |
| The effectiveness of hydraulic dampers for steering wobbles. | 9th Sep 1925 | West Wittering \ N \ July1925-September1925 Scan183 | |
| High-speed steering wobbles and the effects of out-of-centre wheels. | 12th Jun 1925 | West Wittering \ N \ July1925-September1925 Scan184 | |
| Observations from a test drive of a Lancia Lambda car, focusing on its suspension, steering, and wheel balancing. | 1st Sep 1925 | West Wittering \ N \ July1925-September1925 Scan185 | |
| Modifications to car 8-EX for a 10,000-mile test of the New Phantom in France. | 1st Sep 1925 | West Wittering \ N \ July1925-September1925 Scan186 | |
| High-speed steering wobbles. | 12th Jun 1925 | West Wittering \ N \ July1925-September1925 Scan187 | |
| High-speed wobbles and front axle vibration. | 12th Jun 1925 | West Wittering \ N \ July1925-September1925 Scan188 | |
| The causes of front axle wobble and methods for damping it. | 12th Jun 1925 | West Wittering \ N \ July1925-September1925 Scan189 | |
| The challenges of using damping in the steering system and axle to eliminate high-speed wobbles. | 1st Sep 1925 | West Wittering \ N \ July1925-September1925 Scan190 | |
| Mechanical device designed to mitigate high-speed steering wobbles. | 12th Jun 1925 | West Wittering \ N \ July1925-September1925 Scan191 | |
| Proposal for modifying a shock absorber with a torsional spring to act as an anti-wobbling device. | 4th Sep 1925 | West Wittering \ N \ July1925-September1925 Scan192 | |
| Tests conducted to understand high-speed steering wobbles by adding weights to an axle. | 4th Sep 1925 | West Wittering \ N \ July1925-September1925 Scan193 | |
| Report on tests investigating a rattle from the 20 HP servo gears. | 4th Sep 1925 | West Wittering \ N \ July1925-September1925 Scan194 | |
| Servo gear rattling under various driving conditions. | 27th Aug 1925 | West Wittering \ N \ July1925-September1925 Scan195 | |
| Continuation of a test report on the amount of damping required to stop a rattle. | 4th Sep 1925 | West Wittering \ N \ July1925-September1925 Scan196 | |
| Steering wobble tests conducted on a 20 HP car in France. | 4th Sep 1925 | West Wittering \ N \ July1925-September1925 Scan197 | |
| Steering wobble tests conducted on chassis 9-C-111. | 30th Aug 1925 | West Wittering \ N \ July1925-September1925 Scan198 | |
| Wheel balancing and steering performance, noting tyre pressures. | 29th Jun 1925 | West Wittering \ N \ July1925-September1925 Scan199 | |
| The investigation of oil leaks from camshaft casings. | 1st Sep 1925 | West Wittering \ N \ July1925-September1925 Scan200 | |
| Oil leaks from the Condor 111 engine rocker box. | 12th Jun 1925 | West Wittering \ N \ July1925-September1925 Scan201 | |
| Blueprint showing a cross-section of a mechanical assembly with a handwritten note for a proposed modification. | 7th Sep 1925 | West Wittering \ N \ July1925-September1925 Scan202 | |
| Blank document page with a red 'Print Room' stamp from the Derby factory. | 7th Sep 1925 | West Wittering \ N \ July1925-September1925 Scan203 | |
| Wire confirmation from Royce discussing gyrostatis wobble and precession in wheels. | 4th Sep 1925 | West Wittering \ N \ July1925-September1925 Scan204 | |
| Physics of front wheel wobble and gyroscopic effects. | 14th Sep 1925 | West Wittering \ N \ July1925-September1925 Scan205 | |
| Continued analysis of wheel dynamics, discussing moments of inertia, conical oscillation, and precession. | 4th Sep 1925 | West Wittering \ N \ July1925-September1925 Scan206 | |
| Wheel precession, gyroscopic wobble, and conical oscillation. | 24th Sep 1925 | West Wittering \ N \ July1925-September1925 Scan207 | |
| The final reports for the 10,000-mile test on the 'India' car in France. | 1st Sep 1925 | West Wittering \ N \ July1925-September1925 Scan208 | |
| Chassis after a 7,000-mile test in France, detailing engine condition. | 1st Sep 1925 | West Wittering \ N \ July1925-September1925 Scan209 | |
| Page 2 detailing engine component failures and observations. | 12th Jun 1925 | West Wittering \ N \ July1925-September1925 Scan210 | |
| The performance and issues of various vehicle components during testing. | 12th Jun 1925 | West Wittering \ N \ July1925-September1925 Scan211 | |
| The condition of various vehicle components after testing. | 1st Sep 1925 | West Wittering \ N \ July1925-September1925 Scan212 | |
| The condition of steering, axle, suspension, and clutch components after testing. | 1st Sep 1925 | West Wittering \ N \ July1925-September1925 Scan213 | |
| Wear and performance of various vehicle components after 5,000 miles. | 12th Jun 1925 | West Wittering \ N \ July1925-September1925 Scan214 | |
| Failures and wear on various vehicle components including suspension, drivetrain, and exhaust. | 1st Sep 1925 | West Wittering \ N \ July1925-September1925 Scan215 | |
| Component wear, breakages, and performance metrics from a vehicle test. | 12th Jun 1925 | West Wittering \ N \ July1925-September1925 Scan216 | |
| Summarizing failures during a 7,000 miles test for chassis 9-G-111. | 12th Jun 1925 | West Wittering \ N \ July1925-September1925 Scan217 | |
| The characteristics of high-speed steering wobble observed during a test of a Lambda Lancia car. | 1st Sep 1925 | West Wittering \ N \ July1925-September1925 Scan218 | |
| Vehicle's wobble and chassis distortion at speed. | 1st Sep 1925 | West Wittering \ N \ July1925-September1925 Scan219 | |
| Engine and vehicle specifications. | 12th Jun 1925 | West Wittering \ N \ July1925-September1925 Scan220 | |
| High-speed steering wobbles in a Hispano Suiza car, comparing them to a 'Phantom'. | 10th Sep 1925 | West Wittering \ N \ July1925-September1925 Scan222 | |
| Alteration to the pivot lean to address high speed steering wobbles. | 10th Sep 1925 | West Wittering \ N \ July1925-September1925 Scan223 | |
| The balance of road wheels and its effect on steering stability compared to other makes. | 12th Jun 1925 | West Wittering \ N \ July1925-September1925 Scan224 | |
| The steering and braking of a Lambda Lancia car. | 12th Jun 1925 | West Wittering \ N \ July1925-September1925 Scan225 | |
| The necessity of wheel balancing, noting the shocks felt when the balance weights were removed. | 1st Sep 1925 | West Wittering \ N \ July1925-September1925 Scan226 | |
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