| Description | Date | Identifier | |
| Adjustments to front springs, shock absorbers, and rear brake leverage for Continental conditions. | 11th Mar 1930 | Box 105 \ 3 scan0091 | |
| Lubrication issue with shock absorber connections and proposing a modification. | 17th Mar 1930 | Box 105 \ 3 scan0092 | |
| Series of lubrication tests for the connecting tube of 20 HP rear shock dampers. | 25th Mar 1930 | Box 105 \ 3 scan0093 | |
| Series of tests on oil supply, lubrication performance, and oil loss. | 27th Mar 1930 | Box 105 \ 3 scan0094 | |
| Insufficient lubrication for shock damper connecting links and a recommended modification. | 27th Mar 1930 | Box 105 \ 3 scan0095 | |
| Blueprint detailing lubrication tests and modifications for 20 HP rear dampers. | 27th May 1930 | Box 105 \ 3 scan0096 | |
| Springs and damping performance on American and European roads for the Phantom II and 25 HP models. | 4th May 1930 | Box 105 \ 3 scan0097 | |
| Short internal memo requesting an investigation into matters detailed in an attached document. | 6th May 1930 | Box 105 \ 3 scan0098 | |
| Feedback on a 20/25 HP car, highlighting issues with rear seat comfort and exhaust spitting. | 6th May 1930 | Box 105 \ 3 scan0099 | |
| Customer criticisms of the 20 HP car's ride and exhaust spitting, with proposed solutions and comparisons to other models. | 7th May 1930 | Box 105 \ 3 scan0100 | |
| Thermostatically operated shutters, throttle fitting and spitting in the silencer. | 14th May 1930 | Box 105 \ 3 scan0101 | |
| Advantages and disadvantages of using stiffer road springs on Phantom II and 20 HP cars. | 14th May 1930 | Box 105 \ 3 scan0102 | |
| Customer complaints regarding vehicle ride quality, specifically 'low speed dithering' and 'pitching'. | 14th May 1930 | Box 105 \ 3 scan0103 | |
| Vehicle spring ratings, deflection issues, and their effect on steering. | 14th May 1930 | Box 105 \ 3 scan0104 | |
| Poor road holding at high speeds and potential improvements to suspension systems. | 14th May 1930 | Box 105 \ 3 scan0105 | |
| The fitting and performance of new springs on chassis 82-AL for a Mr. Clifford Turner. | 5th May 1930 | Box 105 \ 3 scan0106 | |
| Tests carried out on front shock absorbers to investigate oil loss. | 19th Jun 1930 | Box 105 \ 3 scan0107 | |
| Component testing, discussing oil delivery, lever loosening, damper tests, and spring life improvements. | 19th May 1930 | Box 105 \ 3 scan0108 | |
| Modifications to the central oiling system and front shock dampers. | 19th May 1930 | Box 105 \ 3 scan0109 | |
| Trial of modified spring-loaded shock absorber connecting links for the 20 HP model. | 22th May 1930 | Box 105 \ 3 scan0110 | |
| Use of 'Hartford's' friction auxiliary shock absorbers over the French 'Afa' model. | 22th May 1930 | Box 105 \ 3 scan0111 | |
| Customer complaints regarding the riding qualities and springing issues on Phantom II and 25 HP models. | 23th May 1930 | Box 105 \ 3 scan0112 | |
| Shock absorber loading and spring deflection tests to improve ride comfort. | 23th May 1930 | Box 105 \ 3 scan0113 | |
| Customer complaints and improvements for Phantom and 20 HP models, particularly regarding drilled valves and ride quality. | 23th May 1930 | Box 105 \ 3 scan0114 | |
| Compiled list of customer complaints regarding suspension bumping on buffers, with suggested remedies. | 23th May 1930 | Box 105 \ 3 scan0115 | |
| List of reported vehicle faults concerning ride comfort and suspension, with suggested remedies. | 23th May 1930 | Box 105 \ 3 scan0116 | |
| List of vehicle complaints and remedies related to rear springs and swaying. | 23th May 1930 | Box 105 \ 3 scan0117 | |
| Recommendation to alter the 20 HP rear damper load due to complaints of rear axle 'dithering'. | 23th May 1930 | Box 105 \ 3 scan0118 | |
| 25 HP car's road-holding issues and a proposed solution involving the front springs and dampers. | 23th May 1930 | Box 105 \ 3 scan0119 | |
| Shock absorber loads and potential modifications for the 16-G4 model. | 26th May 1930 | Box 105 \ 3 scan0120 | |
| Idea for shock dampers using air vessels and a request for a follow-up on a patent. | 14th Aug 1930 | Box 105 \ 3 scan0121 | |
| Decision not to patent an air vessel for shock dampers following experimental trials. | 16th Jun 1930 | Box 105 \ 3 scan0122 | |
| Issues with providing free movement in the centre shock absorber and comparing it to the American method. | 16th Jun 1930 | Box 105 \ 3 scan0123 | |
| The required parts and replacements for the spring-loaded front shock damper connecting links on the 20/25 HP chassis. | 19th Jun 1930 | Box 105 \ 3 scan0124 | |
| Parts and replacements for the spring-loaded rear shock damper connecting links on the 20/25 HP short type chassis. | 23th Jun 1930 | Box 105 \ 3 scan0125 | |
| Parts for rear shock damper connecting links on the 20/25 HP long type chassis. | 23th Jun 1930 | Box 105 \ 3 scan0126 | |
| Standardisation document for improved lubrication on a shock damper connecting link. | 25th Apr 1930 | Box 105 \ 3 scan0127 | |
| Request to prepare two sets of spring-loaded connecting links for a shock absorber for standardisation. | 25th Sep 1930 | Box 105 \ 3 scan0128 | |
| Suggesting improvements for the pin bearings in hydraulic shock absorbers on 40/50 and 25 HP models. | 25th Sep 1930 | Box 105 \ 3 scan0129 | |
| Specification of loads for the shock absorbers of 18-G4. | 26th Sep 1930 | Box 105 \ 3 scan0130 | |
| Investigation into customer complaints regarding hydraulic shock absorber maintenance and faults. | 25th Oct 1930 | Box 105 \ 3 scan0131 | |
| Analysis of engine knock issues in Phantom II and 20 HP models, covering pin wear, connecting tubes, air vents, and dampers. | 25th Oct 1930 | Box 105 \ 3 scan0132 | |
| Damper faults, including oil leaks from Bijur connections and issues caused by maltreatment. | 25th Oct 1930 | Box 105 \ 3 scan0133 | |
| Summary of damper and link issues, customer complaints, and proposed design improvements. | 25th Oct 1930 | Box 105 \ 3 scan0134 | |
| Report discussing the investigation of 'mysterious knockers' and issues with shock damper arms. | 25th Oct 1930 | Box 105 \ 3 scan0135 | |
| Sending a 20 HP rear shock absorber to fit to car 17-G4 to investigate a noise complaint. | 25th Oct 1930 | Box 105 \ 3 scan0136 | |
| Technical memorandum discussing the design, function, and challenges of car shock dampers. | 15th Nov 1930 | Box 105 \ 3 scan0137 | |
| Proposed improvements and observations regarding shock dampers and their associated linkages. | 15th Nov 1930 | Box 105 \ 3 scan0138 | |
| Report discussing issues with shock dampers, their positioning, and associated components. | 18th Nov 1930 | Box 105 \ 3 scan0139 | |
| Modification to the ball valve travel on 18-G4 dampers. | 18th Nov 1930 | Box 105 \ 3 scan0140 | |
| Instructions for modifying hydraulic shock dampers on 20/25 HP & 40/50 HP chassis to reduce knocks. | 21th Nov 1930 | Box 105 \ 3 scan0141 | |
| Modifications to high-pressure damper valves and plugs for various chassis, including part number changes and dimensional alterations. | 24th Nov 1930 | Box 105 \ 3 scan0142 | |
| Instructions for modifications to hydraulic shock dampers on the 20/25 HP chassis 18-G-4. | 24th Nov 1930 | Box 105 \ 3 scan0143 | |
| Hydraulic shock damper design, noting a modification to the filter and its suitability for 25HP and Phantom II models. | 24th Dec 1930 | Box 105 \ 3 scan0144 | |
| Investigations into knocking sounds from hydraulic dampers on Phantom II and 20 HP models. | 3rd Jan 1931 | Box 105 \ 3 scan0145 | |
| Technical discussion on the efficiency and silencing of various suspension dampers. | 3rd Jan 1931 | Box 105 \ 3 scan0146 | |
| Report page discussing damper pressure, steering characteristics, and material considerations for damper casings. | 3rd Jan 1931 | Box 105 \ 3 scan0147 | |
| Damper performance, including indicator diagrams, customer complaints, and future development plans for shock absorbers. | 3rd Jan 1931 | Box 105 \ 3 scan0148 | |
| Comparison of performance graphs for a 20 HP rear damper under various configurations and pressures, Sheet I. | 3rd Jan 1931 | Box 105 \ 3 scan0149 | |
| Sheet of performance diagrams for Phantom II front dampers under various conditions. | 3rd Dec 1930 | Box 105 \ 3 scan0150 | |
| Graph and diagram illustrating the results of tests on a 20 HP rear damper lever. | 3rd Dec 1930 | Box 105 \ 3 scan0151 | |
| Sheet of performance indicator diagrams for Phantom II rear dampers under various test conditions. | 3rd Dec 1930 | Box 105 \ 3 scan0152 | |
| Series of six performance graphs for Phantom II rear dampers under various conditions. | 6th Jan 1931 | Box 105 \ 3 scan0153 | |
| Weight comparison table for Lovejoy and 20 HP Rear shock damper components. | 6th Jan 1931 | Box 105 \ 3 scan0154 | |
| Complaints and modifications to the springing on the 25 HP car in Springfield. | 19th Jan 1931 | Box 105 \ 3 scan0155 | |
| Problems with current shock absorbers and recommending design modifications. | 6th Feb 1931 | Box 105 \ 3 scan0156 | |
| Issues and proposed modifications to front shock absorbers on the Phantom II model. | 16th Feb 1931 | Box 105 \ 3 scan0157 | |
| New spring-loaded piston design for P.2. and 25HP shock dampers. | 16th Feb 1931 | Box 105 \ 3 scan0158 | |
| Technical memorandum discussing issues and potential improvements for shock dampers and springs. | 23th Feb 1931 | Box 105 \ 3 scan0159 | |
| Comparing lever and shaft designs and offering a critique of the Delco damper. | 2nd Mar 1931 | Box 105 \ 3 scan0160 | |
| Lubricating shock damper connecting links on Phantom II & 25 HP models to prevent oil loss. | 2nd Mar 1931 | Box 105 \ 3 scan0161 | |
| Requesting the detailing of an intermediate piston and lever for endurance testing, discussing material choices and a design omission. | 9th Mar 1931 | Box 105 \ 3 scan0162 | |
| Development program for P.2 shock dampers, including piston types and application to a 25HP car. | 6th Mar 1931 | Box 105 \ 3 scan0163 | |
| Difficulties of fitting a Phantom shock damper to a 25HP model, proposing a modified body instead. | 16th Mar 1931 | Box 105 \ 3 scan0164 | |
| Progress on the design and production of shock dampers. | 13th Apr 1931 | Box 105 \ 3 scan0165 | |
| Modifications to a rear shock damper from a Phantom II to suit a 20/25 HP chassis. | 22th Apr 1931 | Box 105 \ 3 scan0166 | |
| Instructions for fitting a Phantom II rear shock damper onto a 20/25 HP chassis. | 5th May 1931 | Box 105 \ 3 scan0167 | |
| List of modifications and part updates for various engineering sections. | 5th May 1931 | Box 105 \ 3 scan0168 | |
| List of additional/replacement parts and a list of parts no longer required. | 5th May 1931 | Box 105 \ 3 scan0169 | |
| The alternative production, cadmium plating, and modifications required for various parts for a 20-HP car. | 5th May 1931 | Box 105 \ 3 scan0170 | |
| Instructions for reforming and testing Delco R.R. shock absorbers on various car models. | 6th May 1931 | Box 105 \ 3 scan0171 | |
| Fitting instructions for a Phantom II rear shock damper on a 20/25 HP chassis, including lubrication particulars. | 6th May 1931 | Box 105 \ 3 scan0172 | |
| Anticipating new schemes for connecting tubes on 20 HP shock absorbers to eliminate knocks. | 6th May 1931 | Box 105 \ 3 scan0173 | |
| Standardisation of spring loaded tubular connecting links for the 25 HP Hydraulics. | 2nd Dec 1930 | Box 105 \ 3 scan0174 | |
| Notification of a part becoming obsolete for production due to a new design. | 28th Oct 1929 | Box 105 \ 3 scan0175 | |
| Instructions for fitting a 40/50 HP rear damper to a 20/25 HP chassis, including a list of required parts. | 8th May 1931 | Box 105 \ 3 scan0176 | |
| Continued list of engine component parts, their quantities, and replacement or modification information. | 8th May 1931 | Box 105 \ 3 scan0177 | |
| Parts list memo detailing quantity changes and additions for oil pipes and fittings. | 8th May 1931 | Box 105 \ 3 scan0178 | |
| Fitting and modifying an offside rear shock damper to reduce an audible rattle. | 8th May 1931 | Box 105 \ 3 scan0179 | |
| Spring loaded piston for the rear shock damper on the Phantom II & 20/25 HP chassis. | 12th May 1931 | Box 105 \ 3 scan0180 | |
| Issues with low-rated springs on the 25 HP chassis and the necessity of adequate shock-absorber damping. | 14th May 1931 | Box 105 \ 3 scan0181 | |
| Standardisation of low-rated springs for the 25 HP model. | 15th May 1931 | Box 105 \ 3 scan0182 | |
| Parts required for fitting a non-return ball valve to the rear hydraulic shock damper on a 20/25 HP chassis. | 29th May 1931 | Box 105 \ 3 scan0183 | |
| Parts required for fitting a Non-Return Ball Valve to the front hydraulic shock damper on a 20/25 HP chassis. | 29th May 1931 | Box 105 \ 3 scan0184 | |
| Modification of Phantom II dampers for a 20/25 HP chassis. | 1st Jun 1931 | Box 105 \ 3 scan0185 | |
| Instructions for fitting a 40/50 HP rear damper to the front of a 20/25 HP chassis. | 3rd Jun 1931 | Box 105 \ 3 scan0186 | |
| Specification alteration for shock absorber loadings on the 25 HP model with low rating springs. | 10th Jun 1931 | Box 105 \ 3 scan0187 | |
| Damper loads with low rating springs for 20/25 HP cars. | 11th Jun 1931 | Box 105 \ 3 scan0188 | |
| Production delay for 20/25HP shock dampers due to a Drawing Office error. | 11th Jun 1931 | Box 105 \ 3 scan0189 | |
| Development, testing, and interchangeability of new hydraulic shock absorbers for the P.2 (25-EX), 25 HP, and Phantom models. | 16th Jun 1931 | Box 105 \ 3 scan0190 | |
| | | | |
