| Description | Date | Identifier | |
| Report page comparing riding comfort based on modifications to spring friction, shock dampers, and tyre pressures. | 20th Apr 1926 | Box 55 \ 3 Scan142 | |
| Test to improve riding comfort by altering the car's centre of gravity and suspension. | 20th Apr 1926 | Box 55 \ 3 Scan143 | |
| Test report comparing the ride quality of a 20 HP car and a New Phantom using a water spillage measuring device. | 20th Apr 1926 | Box 55 \ 3 Scan144 | |
| Front spring deflection, its effect on ride comfort, and ongoing tests to address high-speed wobbles. | 21th Apr 1926 | Box 55 \ 3 Scan145 | |
| Investigation and design for fitting hydraulic shock dampers to various chassis models. | 21th Apr 1926 | Box 55 \ 3 Scan146 | |
| Chassis suspension, including tyres, road springs, and dampers. | 25th Apr 1926 | Box 55 \ 3 Scan147 | |
| Technical discussion on vehicle suspension, focusing on spring length, stiffness, and the necessity of effective hydraulic dampers. | 25th Apr 1926 | Box 55 \ 3 Scan148 | |
| Improving vehicle ride comfort and handling through changes to springs, weight distribution, and braking. | 25th Apr 1926 | Box 55 \ 3 Scan149 | |
| Continued discussion on vehicle suspension, handling characteristics, and potential issues caused by coachbuilders or owners. | 26th Apr 1926 | Box 55 \ 3 Scan150 | |
| On the progressive development of hydraulic shock dampers, arguing in favour of a restricted vent with a back pressure valve. | 26th Apr 1926 | Box 55 \ 3 Scan151 | |
| Suspension issues on a 20HP car, recommending stiffer springs and hydraulic shock dampers for French conditions. | 22th Apr 1926 | Box 55 \ 3 Scan152 | |
| Preliminary tests of hydraulic dampers for the Phantom suspension system, with a bar chart comparing performance. | 24th Apr 1926 | Box 55 \ 3 Scan153 | |
| Requesting the fitting and testing of new hydraulic shock dampers and special brake linings. | 26th Apr 1926 | Box 55 \ 3 Scan154 | |
| Modified arrangement for hydraulic shock dampers on the rear of an E.A.C. 8s chassis. | 26th Apr 1926 | Box 55 \ 3 Scan155 | |
| Shock damper settings and weight distribution for the Phantom suspension system. | 27th Apr 1926 | Box 55 \ 3 Scan156 | |
| Cabled message regarding hydraulic shock dampers on the front of a Phantom vehicle. | 29th Apr 1926 | Box 55 \ 3 Scan157 | |
| Hydraulic shock damper lever failure on a 20 HP car and the proposed modifications. | 4th May 1926 | Box 55 \ 3 Scan158 | |
| Comparing the performance and failure risks of hydraulic versus Hartford shock dampers. | 4th May 1926 | Box 55 \ 3 Scan159 | |
| Car controllability issues related to spring flexibility, viscosity effects, and shock damper testing. | 8th May 1926 | Box 55 \ 3 Scan160 | |
| The required range of movement for hydraulic shock dampers on the rear axle. | 8th May 1926 | Box 55 \ 3 Scan161 | |
| Complaint about the springing of a Phantom Demonstration Landaulet, recommending a refit with the latest hydraulic dampers. | 13th May 1926 | Box 55 \ 3 Scan162 | |
| Modifications and trials for engine pistons, auto advance, steering, axles, dampers, and magnetos. | 14th May 1926 | Box 55 \ 3 Scan163 | |
| Internal report discussing vehicle component design, costs, and market requirements. | 14th May 1926 | Box 55 \ 3 Scan164 | |
| Future hopes for manufacturing improvements and cost savings on specific chassis types. | 15th May 1926 | Box 55 \ 3 Scan165 | |
| List of questions arising from a telephone conversation regarding an agreement for 200 sets of shock dampers. | 15th May 1926 | Box 55 \ 3 Scan166 | |
| Phantom steering issues, discussing slower pitch worms, lighter axles, and suspension improvements. | 17th May 1926 | Box 55 \ 3 Scan167 | |
| The requirement for further piston castings for hydraulic shock absorbers and subsequent pattern alterations for the 40/50 HP chassis. | 17th May 1926 | Box 55 \ 3 Scan168 | |
| Cablegram from Springfield to Derby enquiring about the testing of a new front axle and the dispatch of shock absorbers. | 17th May 1926 | Box 55 \ 3 Scan169 | |
| Telegram from Springfield regarding a new front axle, potential design changes, and the dispatch of shock absorbers. | 19th May 1926 | Box 55 \ 3 Scan170 | |
| Modifications to car 7-EX to cure steering wobble and vibration. | 18th May 1926 | Box 55 \ 3 Scan171 | |
| Instructions for using .375 bolts with spherical seating in hydraulic shock damper levers. | 19th May 1926 | Box 55 \ 3 Scan172 | |
| The successful testing of hydraulic shock dampers and a proposal to order 200 pairs. | 19th May 1926 | Box 55 \ 3 Scan173 | |
| Approving a new hydraulic shock damper design and requesting an immediate start on production. | 19th May 1926 | Box 55 \ 3 Scan174 | |
| Results of steering tests in Paris, focusing on reducing shocks and eliminating high-speed wobble. | 19th May 1926 | Box 55 \ 3 Scan175 | |
| The use of weak versus strong steering tube springs on the first Phantom chassis to address low-speed wobbles and stiff steering. | 17th May 1926 | Box 55 \ 3 Scan176 | |
| Testing and resolving Phantom steering complaints in France. | 17th May 1926 | Box 55 \ 3 Scan177 | |
| N.Scheme 2186, concerning a strengthened and spherical headed bolt for hydraulic shock dampers. | 19th May 1926 | Box 55 \ 3 Scan178 | |
| Letter confirming a cablegram sent to the American branch about a despatch delay. | 20th May 1926 | Box 55 \ 3 Scan179 | |
| Confirming a cabled message about production delays for a new front axle and shock absorbers due to a strike. | 20th May 1926 | Box 55 \ 3 Scan180 | |
| Modifying hydraulic dampers to use 4 studs instead of 2 to fix a leakage issue. | 26th May 1926 | Box 55 \ 3 Scan181 | |
| Stress tests performed on hydraulic shock dampers, including a comparison with 'Hartford' shock absorbers. | 26th May 1926 | Box 55 \ 3 Scan182 | |
| The performance of hydraulic dampers, comparing different models and analysing oil viscosity effects. | 26th May 1926 | Box 55 \ 3 Scan183 | |
| Fluid damping tests, comparing different oils and analysing road test data from a chronograph. | 26th May 1926 | Box 55 \ 3 Scan184 | |
| Continued, discussing a rear shock damper arrangement using a steel sleeve. | 26th May 1926 | Box 55 \ 3 Scan185 | |
| Graph comparing the viscosity of Price's Motorine 'C' and Lovejoy Oil against temperature. | 28th May 1926 | Box 55 \ 3 Scan186 | |
| Design principles and modifications for hydraulic shock dampers. | 28th May 1926 | Box 55 \ 3 Scan187 | |
| Adapting a cover with 4 studs for hydraulic shock dampers. | 31th May 1926 | Box 55 \ 3 Scan188 | |
| On further improvements to hydraulic shock dampers, noting the new design is simpler and suggesting a patent. | 4th Jun 1926 | Box 55 \ 3 Scan189 | |
| Modified hydraulic shock damper for an experimental trial. | 8th Jun 1926 | Box 55 \ 3 Scan190 | |
| Cost-effectiveness and necessity of fitting hydraulic dampers to the 20 HP car. | 8th Jun 1926 | Box 55 \ 3 Scan191 | |
| Letter from the American branch to the English branch regarding the necessity of reaction dampers on the Phantom Engine. | 8th Jun 1926 | Box 55 \ 3 Scan192 | |
| Blueprints for a high-pressure valve spring for a front hydraulic shock absorber. | 9th Jun 1926 | Box 55 \ 3 Scan193 | |
| The comparative testing of hydraulic shock absorbers on a 20 HP chassis. | 9th Jun 1926 | Box 55 \ 3 Scan194 | |
| Further improvements and fitting proportions for hydraulic shock dampers. | 10th Jun 1926 | Box 55 \ 3 Scan195 | |
| Essential nature of hydraulic dampers for preventing high-speed wobbles on the 20 HP car. | 11th Jun 1926 | Box 55 \ 3 Scan196 | |
| Page 2 of a memorandum regarding the signing of a standardisation sheet by engineers. | 14th Jun 1926 | Box 55 \ 3 Scan197 | |
| Cable be sent to Mr. Olley in Springfield, U.S.A. regarding front axle tests. | 14th Jun 1926 | Box 55 \ 3 Scan198 | |
| Necessity and cost of modifying the 20 HP model to address high-speed wobbles when using medium-pressure tyres. | 14th Jun 1926 | Box 55 \ 3 Scan199 | |
| Outlining the 10,000-mile test procedure for hydraulic shock dampers, focusing on breather function and oil loss. | 15th Jun 1926 | Box 55 \ 3 Scan200 | |
| Procedures for checking shock damper loads, leakage, and troubleshooting potential blockages. | 15th Jun 1926 | Box 55 \ 3 Scan201 | |
| Using hydraulic shock dampers to resolve high-speed wobbles on 20 HP and Phantom models. | 15th Jun 1926 | Box 55 \ 3 Scan202 | |
| The performance and justification for the extra cost of hydraulic dampers on 20 HP cars. | 16th Mar 1926 | Box 55 \ 3 Scan203 | |
| Results and methodology of tests on hydraulic shock dampers. | 16th Jun 1926 | Box 55 \ 3 Scan205 | |
| The factors affecting oil flow resistance through orifices in hydraulic shock dampers. | 16th Jun 1926 | Box 55 \ 3 Scan206 | |
| Graph showing hydraulic shock absorber test results, plotting oil flow against oil pressure. | 6th Jun 1926 | Box 55 \ 3 Scan207 | |
| Proposal to establish a simple bench test for the glands on hydraulic shock dampers. | 6th Jun 1926 | Box 55 \ 3 Scan208 | |
| Cover note regarding a document about front shock absorbers received from America. | 24th Jun 1926 | Box 55 \ 3 Scan209 | |
| Letter discussing the urgent need for effective front shock absorbers for New Phantom and Silver Ghost cars. | 12th Jun 1926 | Box 55 \ 3 Scan210 | |
| Issues and tests on Lovejoy and R.R. friction-type shock absorbers. | 12th Jun 1926 | Box 55 \ 3 Scan211 | |
| Shock absorber performance, noise, and the effect of changing components. | 12th Jun 1928 | Box 55 \ 3 Scan212 | |
| Test results for various combinations of Lovejoy shock absorber springs and valves on models 39-JG and 69-JG. | 1st Jun 1926 | Box 55 \ 3 Scan213 | |
| Defects with Lovejoys front shock absorbers, detailing pitching and oil foaming issues. | 1st Jun 1926 | Box 55 \ 3 Scan214 | |
| From BJ discussing the justification for adding expensive hydraulic dampers to the 20 HP chassis. | 24th Jun 1926 | Box 55 \ 3 Scan215 | |
| Procedure for pressure testing hydraulic shock dampers for the front and rear of a car. | 25th Jun 1926 | Box 55 \ 3 Scan216 | |
| Instructions for testing and servicing shock dampers. | 28th Jun 1926 | Box 55 \ 3 Scan217 | |
| The testing of hydraulic shock dampers in France using two different types of oil and adjusting settings. | 28th Jun 1926 | Box 55 \ 3 Scan218 | |
| Outlining the test schedule and production status of experimental parts for the 12-EX car destined for France. | 28th Jun 1926 | Box 55 \ 3 Scan219 | |
| Adapting India Hydraulic Shock Dampers for 20HP frames. | 30th Jun 1926 | Box 55 \ 3 Scan220 | |
| Technical memorandum discussing the fitting of rear hydraulic shock dampers and associated modifications. | 6th Jul 1926 | Box 55 \ 3 Scan221 | |
| Use of accelerometers to measure riding comfort and g-forces for the Phantom suspension. | 15th Jul 1926 | Box 55 \ 3 Scan222 | |
| 'water test' method for assessing vehicle riding comfort and comparing results between different models. | 15th Jul 1926 | Box 55 \ 3 Scan223 | |
| Report comparing ride quality with different dampers and suspension setups on various car models. | 15th Jul 1926 | Box 55 \ 3 Scan224 | |
| Series of graphs comparing riding comfort in front seats under various conditions at 23 M.P.H. | 16th Jul 1926 | Box 55 \ 3 Scan225 | |
| To halt work on high and low-pressure valve springs for the 40/50 HP chassis hydraulic shock damper. | 5th Jul 1926 | Box 55 \ 3 Scan226 | |
| To cancel the order for one part and double the quantity of another for the 20-HP chassis front hydraulic shock damper. | 7th Jul 1926 | Box 55 \ 3 Scan227 | |
| From 'BJ' requesting full information on the testing, design alterations, and production status of hydraulic shock dampers. | 1st Jul 1926 | Box 55 \ 3 Scan228 | |
| The introduction of hydraulic shock dampers and ceasing work on friction type dampers. | 8th Jul 1926 | Box 55 \ 3 Scan229 | |
| Standardisation and testing of hydraulic shock dampers on 20 HP and Phantom models. | 9th Jul 1926 | Box 55 \ 3 Scan230 | |
| Testing of hydraulic dampers on various car models to address ride quality complaints. | 9th Jul 1926 | Box 55 \ 3 Scan231 | |
| Readiness of a car and a proposed demonstration of its hydraulic dampers. | 12th Jul 1926 | Box 55 \ 3 Scan232 | |
| Positioning and modification of rear hydraulic shock dampers for the New Phantom chassis. | 12th Jul 1926 | Box 55 \ 3 Scan233 | |
| Bringing the EAC-1 car to WW to fit hydraulic dampers and a modified lightened axle forging. | 13th Jul 1926 | Box 55 \ 3 Scan234 | |
| Size and clearance of buffers for hydraulic shock dampers. | 13th Jul 1926 | Box 55 \ 3 Scan235 | |
| Adaptation of a forward support bracket for rear hydraulic shock dampers. | 16th Jul 1926 | Box 55 \ 3 Scan236 | |
| Compression and dimensions of a rubber buffer in a hydraulic shock damper. | 17th Jul 1926 | Box 55 \ 3 Scan237 | |
| Modifications to the hydraulic shock dampers on the rear of the EAC.7 chassis. | 23th Jul 1926 | Box 55 \ 3 Scan238 | |
| Letter from Maurice Olley to E.W. Hives thanking him for a report on shock absorbers. | 3rd Aug 1926 | Box 55 \ 3 Scan239 | |
| The availability of a 20 HP car and modifications required for a Phantom car. | 5th Aug 1926 | Box 55 \ 3 Scan240 | |
| Telegram from Chateauroux requesting available springs for hydraulic dampers. | 18th Aug 1926 | Box 55 \ 3 Scan241 | |
| Steering tests for the 12-EX car in France, investigating issues with Dunlop balloon tyres. | 18th Aug 1926 | Box 55 \ 3 Scan242 | |
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