| Description | Date | Identifier | |
| Outlining five key requirements for the design of hydraulic shock dampers. | 3rd May 1927 | Box 55 \ 4 Scan032 | |
| Oil leakage issues in forced feed lubrication systems for hydraulic shock damper bearings and plans for further testing. | 1st Mar 1927 | Box 55 \ 4 Scan033 | |
| Braking tests for model EAC.V11, comparing stiffened rear brake drums to those on model EAC.Vlll. | 7th Mar 1927 | Box 55 \ 4 Scan034 | |
| The production programme for rear hydraulic shock dampers and a proposal to test a modification for lever bearings. | 9th Mar 1927 | Box 55 \ 4 Scan035 | |
| Proposed modifications to the rear shock damper casting and shaft to improve wear resistance. | 14th Mar 1927 | Box 55 \ 4 Scan036 | |
| Requesting the modification of shock absorbers for testing with a gravity feed oil system. | 16th Mar 1927 | Box 55 \ 4 Scan037 | |
| Cover memo for sending a copy of requested instructions. | 16th Mar 1927 | Box 55 \ 4 Scan038 | |
| Guide to shock absorber settings and troubleshooting for common suspension issues. | 16th Mar 1927 | Box 55 \ 4 Scan039 | |
| Instructions for checking the loading and adjusting the settings of front and rear shock absorbers. | 16th Mar 1927 | Box 55 \ 4 Scan040 | |
| Calculations for bearing loads on hydraulic dampers. | 21th Mar 1927 | Box 55 \ 4 Scan041 | |
| Outlining the testing procedure for hydraulic shock absorbers. | 21th Mar 1927 | Box 55 \ 4 Scan042 | |
| Specification table for springs in hydraulic dampers, detailing theoretical vs actual measured loads for various part numbers. | 21th Mar 1927 | Box 55 \ 4 Scan043 | |
| Requesting the preparation of a standard front shock absorber and a new version with an increased area bearing for testing. | 21th Mar 1927 | Box 55 \ 4 Scan044 | |
| Technical memo outlining a list of eight potential improvements for a vehicle's steering system. | 22th Mar 1927 | Box 55 \ 4 Scan045 | |
| And favouring specific steering system design combinations. | 11th Apr 1927 | Box 55 \ 4 Scan046 | |
| Redesign and testing of hydraulic shock dampers for the 20 HP chassis. | 11th Apr 1927 | Box 55 \ 4 Scan047 | |
| Failure of hydraulic shock dampers under testing and proposing a re-design. | 11th Apr 1927 | Box 55 \ 4 Scan048 | |
| Confirming an instruction to plug a small hole in the high-pressure valve on hydraulic shock absorbers. | 4th Apr 1927 | Box 55 \ 4 Scan049 | |
| Requesting the preparation of an O.S. front shock absorber for a 20 HP car. | 12th Apr 1927 | Box 55 \ 4 Scan050 | |
| Letter detailing a fix for leaking hydraulic shock dampers on vehicle 10-G-111. | 12th Apr 1927 | Box 55 \ 4 Scan051 | |
| Proposal for mounting hydraulic shock dampers on the rear axle of a 20 HP vehicle. | 4th Apr 1927 | Box 55 \ 4 Scan052 | |
| Improvements and design considerations for the steering worm, nut, and spring return system. | 16th Apr 1927 | Box 55 \ 4 Scan053 | |
| Steering system design, focusing on self-centering, spring return, and axle proposals. | 22th Apr 1927 | Box 55 \ 4 Scan054 | |
| Modification to shock damper bushes to introduce oil grooves to obviate wear. | 22th Apr 1927 | Box 55 \ 4 Scan055 | |
| Letter addressing oil leaks from shock absorber glands and providing instructions on fitting new leather packings. | 23th Apr 1927 | Box 55 \ 4 Scan056 | |
| Eliminating various noises from hydraulic shock absorbers. | 23th Apr 1927 | Box 55 \ 4 Scan057 | |
| The application of a hydraulic shock damper to the 20 HP chassis rear axle, discussing clearance issues and rejecting a proposed bush and gland design. | 26th Apr 1927 | Box 55 \ 4 Scan058 | |
| Need for stronger springs for hydraulic shock dampers and side steering tubes. | 25th Apr 1927 | Box 55 \ 4 Scan059 | |
| Suitability of different types of shock dampers for front and rear axles, comparing European and American specifications. | 29th Apr 1927 | Box 55 \ 4 Scan060 | |
| Proposal for the 10-EX Sports Model, its performance, and strategic purpose. | 29th Apr 1927 | Box 55 \ 4 Scan061 | |
| Instructions for fitting extra strong low-pressure valve springs to hydraulic shock dampers on a Phantom Chassis. | 2nd May 1927 | Box 55 \ 4 Scan062 | |
| Modifications and improvements to the Phantom steering system. | 5th Mar 1927 | Box 55 \ 4 Scan063 | |
| Design proposal for an improved front axle for the 20 HP model, based on the Phantom. | 13th May 1927 | Box 55 \ 4 Scan064 | |
| Requesting an alteration to the setting of front hydraulic shock dampers on car 12-EX. | 13th May 1927 | Box 55 \ 4 Scan065 | |
| Responding to an inquiry about the location of the Hydraulic Shock Absorber file X235. | 13th May 1927 | Box 55 \ 4 Scan066 | |
| Recommendations for modifications to hydraulic shock dampers for 20 HP and 40/50 HP cars. | 20th May 1927 | Box 55 \ 4 Scan067 | |
| Highlighting two issues with hydraulic shock dampers regarding oil levels and non-return valves. | 20th May 1927 | Box 55 \ 4 Scan068 | |
| Page showing examples of shock damper test records with graphical readouts. | 21th May 1927 | Box 55 \ 4 Scan069 | |
| Accessibility and positioning of shock dampers for the axle control on the Phantom & EAC. 7. | 27th May 1927 | Box 55 \ 4 Scan070 | |
| Shock damper configurations for Australian road conditions. | 27th May 1927 | Box 55 \ 4 Scan071 | |
| Request for a near-side rear shock absorber mounting required for tests on a joggling rig. | 27th May 1927 | Box 55 \ 4 Scan072 | |
| Instructions regarding low-pressure loading and air leak settings on 40/50 HP rear hydraulic shock dampers. | 26th May 1927 | Box 55 \ 4 Scan073 | |
| Tests on hydraulic shock dampers and spare wheel carriers. | 1st Jun 1927 | Box 55 \ 4 Scan074 | |
| Graph showing the variation of oil flow with temperature for a hydraulic shock absorber at constant pressure. | 2nd Jun 1927 | Box 55 \ 4 Scan075 | |
| Modifications to hydraulic shock dampers to prevent audible knocks. | 2nd Jun 1927 | Box 55 \ 4 Scan076 | |
| The testing of a valve modification to prevent oil cushioning and the effects of hydraulic dampers. | 2nd Jun 1927 | Box 55 \ 4 Scan077 | |
| Analysis of piston movement, oil viscosity, and cushioning effects in a hydraulic system, comparing front and rear axle performance. | 2nd Jun 1927 | Box 55 \ 4 Scan078 | |
| Shock damper performance, including methods for measuring efficiency and the effects of extreme conditions. | 2nd Jun 1927 | Box 55 \ 4 Scan079 | |
| Analysis of shock damper loading concerning axle velocity, oil flow, and viscosity. | 2nd Jun 1927 | Box 55 \ 4 Scan080 | |
| Page of test conclusions and future development directions for a damper, comparing it to a Hartford damper. | 2nd Jun 1927 | Box 55 \ 4 Scan081 | |
| Shock damper, including a diagram and chronograph records from a 10,000-mile test. | 2nd Jun 1927 | Box 55 \ 4 Scan082 | |
| Pressure/stroke diagram for a front shock absorber showing load versus movement at different temperatures. | 2nd Jun 1927 | Box 55 \ 4 Scan083 | |
| Two graphs showing the effects of temperature, load, and piston velocity on high-pressure valve opening. | 2nd Jun 1927 | Box 55 \ 4 Scan084 | |
| Graph showing the effect of speed on maximum damper load at different temperatures and pressures. | 2nd Jun 1927 | Box 55 \ 4 Scan085 | |
| Graphs illustrating the effects of temperature and stroke rate on damper load and high-pressure valve lift. | 2nd Jun 1927 | Box 55 \ 4 Scan086 | |
| Altered low pressure loadings for shock damper springs on 40/50 HP and 20 HP models. | 2nd Jun 1927 | Box 55 \ 4 Scan087 | |
| The alteration and testing of component free lengths and loads before ordering in quantity. | 9th Jun 1927 | Box 55 \ 4 Scan088 | |
| Nature of resistance in hydraulic shock dampers at high speeds. | 9th Jun 1927 | Box 55 \ 4 Scan089 | |
| Report investigating high-speed wobbles, noting that increasing shock absorber load can unexpectedly worsen the issue. | 14th Jun 1927 | Box 55 \ 4 Scan090 | |
| Experiments on vehicle wobble, focusing on the effects of engine mass, inertia, shock dampers, and frame rigidity. | 14th Jun 1927 | Box 55 \ 4 Scan091 | |
| Comparison of suspension and wobble characteristics for EAC.VII and Hispano models. | 14th Jun 1927 | Box 55 \ 4 Scan092 | |
| Elimination of high-speed wobbles through damper and spring adjustments. | 12th Jun 1933 | Box 55 \ 4 Scan093 | |
| Graph and diagrams illustrating frame rigidity and periodicity, comparing Hispano and E.A.C.7 frames. | 12th Jun 1933 | Box 55 \ 4 Scan094 | |
| Test results and proposed standardization for shock damper loading on 40/50 HP and 20 HP models. | 17th Jun 1927 | Box 55 \ 4 Scan095 | |
| Specifications and part numbers for front and rear springs on the 20 HP model. | 25th May 1927 | Box 55 \ 4 Scan096 | |
| Standardisation of chassis parts, specifically hydraulic dampers on the rear. | 25th May 1927 | Box 55 \ 4 Scan097 | |
| Standardisation form for chassis parts concerning a hydraulic-brake on the rear. | 30th May 1924 | Box 55 \ 4 Scan098 | |
| Table comparing theoretical and actual loads for high and low pressure valve springs used in hydraulic dampers. | 9th Jul 1927 | Box 55 \ 4 Scan099 | |
| Improvements to the riding qualities of the 40/50 and 20 HP cars. | 9th Jul 1927 | Box 55 \ 4 Scan100 | |
| Test report on the twist of the axle control, including a graph of deflection versus load. | 9th Jul 1927 | Box 55 \ 4 Scan101 | |
| Test memorandum detailing shock damper experiments on a 40/50 HP model. | 12th Jul 1927 | Box 55 \ 4 Scan102 | |
| Rigging a hydraulic damper in the steering system to achieve a specific load and torque. | 7th Jul 1927 | Box 55 \ 4 Scan103 | |
| Hand-drawn graph on blueprint paper comparing the viscosity of various oils against temperature and efflux time. | 8th Jul 1927 | Box 55 \ 4 Scan104 | |
| Test load requirements for steering joggles and hydraulic dampers. | 8th Jul 1927 | Box 55 \ 4 Scan105 | |
| The lubrication of front shock damper connecting links after a 4000-mile test on an 8-EX car. | 21th Jul 1927 | Box 55 \ 4 Scan106 | |
| Alteration to front shock absorber loading and despatching a pair for testing on car 103-MC. | 1st Aug 1927 | Box 55 \ 4 Scan107 | |
| Report confirming that shock absorbers fitted with special springs have passed testing satisfactorily. | 9th Aug 1927 | Box 55 \ 4 Scan108 | |
| The performance of hydraulic front shock dampers after extended road testing. | 23th Sep 1927 | Box 55 \ 4 Scan109 | |
| One hydraulic damper piston be made according to an attached sketch. | 26th Sep 1927 | Box 55 \ 4 Scan110 | |
| Hydraulic shock absorbers, customer feedback on 'pitching', and modifications to damping. | 27th Sep 1927 | Box 55 \ 4 Scan111 | |
| Car suspension modifications for a customer, Sir John Latta, due to complaints of pitching. | 27th Sep 1927 | Box 55 \ 4 Scan112 | |
| Further tests on shock dampers and the effect of damping on vehicle pitching. | 27th Sep 1927 | Box 55 \ 4 Scan113 | |
| Clarifying the necessity of damping with hydraulic shock absorbers to prevent vehicle pitching. | 29th Sep 1927 | Box 55 \ 4 Scan114 | |
| Request for the production of brackets to fit hydraulics and Hartford shock dampers to the rear of vehicle 44-PK. | 10th Oct 1927 | Box 55 \ 4 Scan115 | |
| The performance of a four-point rigid suspension system, focusing on steering and engine vibrations. | 28th Oct 1927 | Box 55 \ 4 Scan116 | |
| Test report on the performance of rear springs and hydraulic dampers for the 14-EX car. | 7th Nov 1927 | Box 55 \ 4 Scan117 | |
| The required loadings for front axle control dampers. | 11th Nov 1927 | Box 55 \ 4 Scan118 | |
| Suspension issues with springing, damping, and hitting buffers on the 10-EX car. | 15th Nov 1927 | Box 55 \ 4 Scan119 | |
| Tests conducted on hydraulic shock dampers to improve car riding comfort and stability. | 16th Nov 1927 | Box 55 \ 4 Scan120 | |
| Shock damper testing, their performance on models 12-EX and 14-EX, and comparison with standard dampers. | 16th Nov 1927 | Box 55 \ 4 Scan121 | |
| Report concluding that the suspension on the 14-EX model performs as well as, or better than, the standard 40/50 HP. | 16th Nov 1927 | Box 55 \ 4 Scan122 | |
| Report comparing the ride quality of the 14-EX car with higher pressure and standard shock dampers. | 16th Nov 1927 | Box 55 \ 4 Scan123 | |
| Blueprint showing performance graphs and a cross-sectional diagram for a damper piston assembly. | 16th Nov 1927 | Box 55 \ 4 Scan124 | |
| Four graphs analysing oil pressure, velocity, temperature, and viscosity for different oils and orifice configurations. | 18th Nov 1927 | Box 55 \ 4 Scan125 | |
| Requesting the fabrication of hydraulic shock dampers with specific orifices for various car models. | 18th Nov 1927 | Box 55 \ 4 Scan126 | |
| Blueprint showing modifications to a hydraulic damper. | 21th Nov 1927 | Box 55 \ 4 Scan127 | |
| Request to fit a pair of hydraulic shock absorbers to the rear of a 9-G3 car. | 21th Nov 1927 | Box 55 \ 4 Scan128 | |
| Specifying the recommended loads for the 20 HP rear shock absorber, questioning different figures on drawing F.54988. | 28th Nov 1927 | Box 55 \ 4 Scan129 | |
| Suspension pitching issue on car 59-LF during the Paris Closed Phantom Trials and seeking a solution. | 30th Nov 1927 | Box 55 \ 4 Scan130 | |
| Increasing the front shock absorber loading on the Phantom and checking chassis 59-LF. | 1st Dec 1927 | Box 55 \ 4 Scan131 | |
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