| Description | Date | Identifier | |
| Points related to the function of hydraulic shock dampers. | 16th Jul 1928 | Box 55 \ 4 Scan232 | |
| Responding to queries on hydraulic shock absorbers, detailing test results and future testing plans. | 7th Jul 1928 | Box 55 \ 4 Scan233 | |
| Vehicle ride quality, tyre performance, and suspension adjustments. | 18th Jul 1928 | Box 55 \ 4 Scan234 | |
| Indicator diagram tests of American shock absorbers with modified leaks. | 18th Jul 1928 | Box 55 \ 4 Scan235 | |
| Riding comfort versus car control, referencing American conditions and a proposed test of a slotted type suspension. | 18th Jul 1928 | Box 55 \ 4 Scan236 | |
| Comparison of Standard and American rear shock absorbers using high pressure diagrams. | 18th Jul 1928 | Box 55 \ 4 Scan237 | |
| Series of performance graphs for a standard damper at various stroke lengths and pressures. | 13th Jul 1928 | Box 55 \ 4 Scan238 | |
| Letter discussing characteristic car movements and vibrations related to shock absorbers. | 13th Jul 1928 | Box 55 \ 4 Scan239 | |
| Technical discussion on shock absorber valve performance, leakage, and design modifications. | 13th Jul 1928 | Box 55 \ 4 Scan240 | |
| Report page detailing shock absorber settings, recommended valves, and poundage testing procedures. | 13th Jul 1928 | Box 55 \ 4 Scan241 | |
| The testing and comparison of different shock absorber systems, including adjustable needle valve and Houdaille types. | 13th Jul 1928 | Box 55 \ 4 Scan242 | |
| Data tables for front, rear shock absorbers, and axle control specifications. | 21th Apr 1928 | Box 55 \ 4 Scan243 | |
| Drawing of an adjusting needle assembly. | 21th Apr 1928 | Box 55 \ 4 Scan244 | |
| Blueprint for a slotted high pressure valve for a hydraulic shock absorber. | 11th Jun 1928 | Box 55 \ 4 Scan245 | |
| Blueprint for leaking high pressure valves with associated part numbers. | 27th May 1928 | Box 55 \ 4 Scan246 | |
| Blueprint for a high pressure valve for a hydraulic shock absorber. | 18th Jun 1928 | Box 55 \ 4 Scan247 | |
| Riding qualities, specifically tyres and road springs, for the Phantom and 20 HP models. | 20th Jul 1928 | Box 55 \ 4 Scan248 | |
| Improvements to vehicle suspension, focusing on flexible springs and hydraulic shock dampers. | 23th Jul 1928 | Box 55 \ 4 Scan249 | |
| Requesting a report on improvements to riding qualities by investigating tyres, springs, and dampers. | 23th Jul 1928 | Box 55 \ 4 Scan250 | |
| Tests on high and low pressure end diagrams for hydraulic shock absorbers. | 1st Jul 1928 | Box 55 \ 4 Scan251 | |
| Agreeing to halt further investigation into hydraulic shock damper pressure diagrams as the damper is working satisfactorily. | 26th Jul 1928 | Box 55 \ 4 Scan252 | |
| Specifications for front and rear damper springs to increase high-pressure loading. | 27th Jul 1928 | Box 55 \ 4 Scan253 | |
| Letter discussing hydraulic dampers and the trial of new springs for car 29-CL. | 2nd Aug 1928 | Box 55 \ 4 Scan254 | |
| Low-speed riding trouble, shock absorber loading, and damper testing. | 20th Aug 1928 | Box 55 \ 4 Scan255 | |
| Request to modify a 20 HP gearbox for use in a shock absorber test rig. | 3rd Sep 1928 | Box 55 \ 4 Scan256 | |
| Confirming the receipt of two steam engine indicators and the intent to adapt them for a shock absorber rig. | 1st Sep 1928 | Box 55 \ 4 Scan257 | |
| Discrepancy observed in 40/50 suspension test results. | 10th Sep 1928 | Box 55 \ 4 Scan258 | |
| Request to clean, polish and grease the rear springs and disconnect the hydraulic shock absorbers on car 98-NK. | 27th Sep 1928 | Box 55 \ 4 Scan259 | |
| Technical memorandum on strengthening 'H' section levers for the Phantom chassis hydraulic and axle control dampers. | 27th Sep 1928 | Box 55 \ 4 Scan260 | |
| Suggestion to modify the front hydraulic shock absorber mounting to prevent fouling the front wings. | 4th Oct 1928 | Box 55 \ 4 Scan261 | |
| Practicality of changing the position of the front hydraulic shock absorbers. | 9th Oct 1928 | Box 55 \ 4 Scan262 | |
| Requesting the drawing for modified levers on the axle control hydraulic dampers. | 17th Oct 1928 | Box 55 \ 4 Scan263 | |
| Requesting the casting for a rear shock absorber testing rig. | 30th Oct 1928 | Box 55 \ 4 Scan264 | |
| Noisy hydraulic shock absorbers on a 20 HP Weymann trials car and a 20 HP Barkerlite Saloon. | 31th Oct 1928 | Box 55 \ 4 Scan265 | |
| Complaints and potential adjustments for hydraulic rear shock absorbers on 20 HP and 40/50 models. | 31th Oct 1928 | Box 55 \ 4 Scan266 | |
| Investigating noise issues on the 20 HP hydraulic shock absorbers. | 2nd Nov 1928 | Box 55 \ 4 Scan267 | |
| Complaints of knocking rear shock absorbers on the 20 HP model and a proposed solution. | 1st Nov 1928 | Box 55 \ 4 Scan268 | |
| The difficulty in detecting shock absorber noise and a recommendation for the 20 HP rear damper. | 1st Nov 1928 | Box 55 \ 4 Scan269 | |
| Booking-out slip for two rear shock absorbers fitted to vehicle 10-G-3. | 1st Nov 1928 | Box 55 \ 4 Scan270 | |
| Customer complaints of knocks from rear hydraulic shock absorbers on 20HP models. | 12th Nov 1928 | Box 55 \ 4 Scan271 | |
| Tests to determine the effectiveness of shock absorber positioning on the Phantom model to prevent high-speed wobbles. | 13th Nov 1928 | Box 55 \ 4 Scan272 | |
| Diagram showing the positioning of shock dampers to mitigate high-speed wobble. | 12th Nov 1928 | Box 55 \ 4 Scan273 | |
| Improvements to vehicle suspension for comfortable riding and reducing vibrations. | 19th Nov 1928 | Box 55 \ 4 Scan274 | |
| List of further tests to investigate shock damper knocks. | 21th Nov 1928 | Box 55 \ 4 Scan275 | |
| Customer complaint about noisy shock absorbers on chassis GBH-21. | 27th Nov 1928 | Box 55 \ 4 Scan276 | |
| Test procedure document for troubleshooting and improving F. Blackmores shock absorbers. | 27th Nov 1928 | Box 55 \ 4 Scan277 | |
| Typed memorandum discussing the potential replacement of dampers and valves to cure a noise issue on a car. | 3rd Dec 1928 | Box 55 \ 4 Scan278 | |
| Audible knocks in 20 HP shock absorbers caused by a faulty non-return ball valve. | 3rd Dec 1928 | Box 55 \ 4 Scan279 | |
| Letter to a customer regarding an experimental mechanic being sent to investigate and cure a noisy shock absorber issue. | 3rd Dec 1928 | Box 55 \ 4 Scan280 | |
| Confirming an engineer has been sent to deal with Mr. Blackmore's car and to experiment on it. | 28th Dec 1928 | Box 55 \ 4 Scan281 | |
| Knocking shock absorbers on the 20 HP car caused by a faulty non-return replenishing valve. | 1st Dec 1928 | Box 55 \ 4 Scan282 | |
| Complaints of noisy hydraulics, accompanied by a blueprint of a sticking shock-damper ball valve. | 7th Dec 1928 | Box 55 \ 4 Scan283 | |
| Strengthened 'I' section lever design for the 'SS' front shock damper. | 7th Dec 1928 | Box 55 \ 4 Scan284 | |
| Requesting the production of pieces for shock absorbers according to attached drawings. | 12th Dec 1928 | Box 55 \ 4 Scan285 | |
| The weights of front shock dampers with different top half casings. | 1st Jan 1929 | Box 55 \ 4 Scan286 | |
| Fitting new standard production shock absorbers to chassis GEM.21 for Mr. F.H. Blackmore. | 3rd Jan 1929 | Box 55 \ 4 Scan287 | |
| Dispatch of broken shock absorber parts. | 10th Jan 1929 | Box 55 \ 4 Scan288 | |
| The despatch of a box of scrap broken shock absorbers to a Mr. Day. | 10th Jan 1929 | Box 55 \ 4 Scan289 | |
| Scheme for a friction-held cross member to address 'SS' frame front jellying. | 1st Jan 1929 | Box 55 \ 4 Scan290 | |
| The running of the 'SS' bumper chassis on the bumping rig, specifically regarding spring life with shock dampers. | 1st Jan 1929 | Box 55 \ 4 Scan291 | |
| Analysis of failures during a 200-hour 'SS' chassis test on a bumping rig. | 1st Jan 1929 | Box 55 \ 4 Scan292 | |
| Operational life and failure points of various levers, shafts, and casings under test conditions. | 1st Jan 1929 | Box 55 \ 4 Scan293 | |
| Testing and failure points of rear shock absorbers during a 100-hour trial. | 1st Jan 1929 | Box 55 \ 4 Scan294 | |
| Test log detailing the life, running conditions, and failure analysis of vehicle springs. | 7th Jan 1929 | Box 55 \ 4 Scan295 | |
| Alternative schemes for the 'SS' engine suspension, including a rubber-lined proposal. | 7th Jan 1929 | Box 55 \ 4 Scan296 | |
| Customer complaints and investigations into noisy hydraulic shock dampers on 20 HP cars. | 19th Jan 1929 | Box 55 \ 4 Scan297 | |
| Analysis of gudgeon pin wear, fitment issues, and associated knocking sounds, including a diagram of the pin. | 19th Jan 1929 | Box 55 \ 4 Scan298 | |
| Investigation into 'link' and 'bearing' knocks, discussing clearances, valve types, and diagnostic challenges. | 19th Jan 1929 | Box 55 \ 4 Scan299 | |
| Technical memorandum discussing solutions for noise issues confined to the rear of the 20 HP model. | 22th Jan 1929 | Box 55 \ 4 Scan300 | |
| Investigation and rectification of noises on Mr. Pilling's car, particularly concerning shock absorbers. | 22th Jan 1929 | Box 55 \ 4 Scan301 | |
| Design of car and aero engine mountings. | 23th Jan 1929 | Box 55 \ 4 Scan302 | |
| Sending prints for 'SS' engine mounting components. | 26th Jan 1929 | Box 55 \ 4 Scan303 | |
| Design and challenges of the 'SS' engine mounting feet. | 28th Jan 1929 | Box 55 \ 4 Scan304 | |
| Design of the 'SS' model's rear engine mountings and feet. | 28th Jan 1929 | Box 55 \ 4 Scan305 | |
| Knocking issue in 20 HP hydraulic shock absorbers and suggesting a potential solution. | 30th Jan 1929 | Box 55 \ 4 Scan306 | |
| Reducing the side clearance in shock absorber links to address noise issues. | 1st Jan 1929 | Box 55 \ 4 Scan307 | |
| Diagram of a hydraulic shock damper, noting a specific side clearance. | 31th Jan 1929 | Box 55 \ 4 Scan308 | |
| Investigations into knocking noises from 20 HP shock absorbers. | 31th Jan 1929 | Box 55 \ 4 Scan309 | |
| 'SS' engine mounting, focusing on damper placement, rubber thickness, and frame stiffness. | 1st Feb 1929 | Box 55 \ 4 Scan310 | |
| Broken shock absorber shaft being sent for despatch and examination. | 1st Feb 1929 | Box 55 \ 4 Scan311 | |
| Design improvements for hydraulic shock dampers, including a patentable idea for spring-loaded connecting links. | 15th Feb 1929 | Box 55 \ 4 Scan312 | |
| Letter to Mr. E. W. Hives requesting feedback on rubber engine mounting and cast-dash designs. | 15th Feb 1929 | Box 55 \ 4 Scan313 | |
| Letter regarding the fitting of cloth and felt silencing sheets to dashboards. | 23th Feb 1929 | Box 55 \ 4 Scan314 | |
| Shock absorber noises, detailing discrepancies between drawings and shop practice and proposing solutions. | 23th Feb 1929 | Box 55 \ 4 Scan315 | |
| Technical memorandum discussing issues with shock absorbers, body noise, connecting tubes, and damper oil. | 23th Feb 1929 | Box 55 \ 4 Scan316 | |
| Unsatisfactory performance of shock absorbers in warm weather and comparing them to American Houdaille. | 25th Feb 1929 | Box 55 \ 4 Scan317 | |
| Telegram regarding engine feet rubber testing with different ferrules or rubber hardness. | 25th Feb 1929 | Box 55 \ 4 Scan318 | |
| Test results and required improvements for the 21-EX experimental car before sending it to France. | 27th Feb 1929 | Box 55 \ 4 Scan319 | |
| Noise, engine mounting and booming issues, with plans to test the 21-EX car in France. | 20th Feb 1929 | Box 55 \ 4 Scan320 | |
| Listing parts to be fitted to the 21-EX car chassis before testing. | 20th Feb 1929 | Box 55 \ 4 Scan321 | |
| Continued list of component modifications and improvements. | 5th Mar 1929 | Box 55 \ 4 Scan322 | |
| Work order detailing modifications to the engine feet and dampers for a 22-EX car. | 5th Mar 1929 | Box 55 \ 4 Scan323 | |
| Phantom Trials car for comparison testing related to frame issues. | 6th Mar 1929 | Box 55 \ 4 Scan324 | |
| Technical memo discussing the design and performance of rubber engine mountings. | 7th Mar 1929 | Box 55 \ 4 Scan325 | |
| Frame stiffness resonance and the pros and cons of using a cast dash. | 11th Mar 1929 | Box 55 \ 4 Scan326 | |
| Modifications to 20 HP rear shock absorbers to address knocking issues. | 11th Mar 1929 | Box 55 \ 4 Scan327 | |
| Telegram from Hives reporting that rear hydraulics were useless due to holes in valves, but the springing is now satisfactory on both cars after correction. | 23th Mar 1929 | Box 55 \ 4 Scan328 | |
| Technical memo discussing problems and design preferences for hydraulic dampers. | 25th Mar 1929 | Box 55 \ 4 Scan329 | |
| Rear hydraulic suspension issues on 'SS' model cars, specifically regarding drilled high-pressure valves. | 26th Mar 1929 | Box 55 \ 4 Scan330 | |
| To hold modifications on 20 HP rear shock absorbers pending test results from a 10,000 miles test. | 28th Mar 1929 | Box 55 \ 4 Scan331 | |
| | | | |
