| Description | Date | Identifier | |
| The testing of a shock damper connecting tube with American type rubber control pin bushes. | 9th Oct 1936 | Box 151 \ 2 scan0310 | |
| Graph showing the torsional rating and hysteresis curve for a shock damper connecting tube with American type rubber control pin bushes. | 8th Oct 1936 | Box 151 \ 2 scan0311 | |
| Rating test graph for a shock damper connecting tube, plotting deflection against load after failure. | 8th Oct 1936 | Box 151 \ 2 scan0312 | |
| Failure of force fit knurled assemblies and exploring alternative solutions. | 6th Nov 1936 | Box 151 \ 2 scan0313 | |
| Forced fit knurled assemblies, comparing the methods of knurling and surface broaching for hydraulic shock dampers. | 12th Nov 1936 | Box 151 \ 2 scan0314 | |
| Design, materials, and manufacturing of rubber connecting links for roll rods and shock absorbers. | 30th Nov 1936 | Box 151 \ 2 scan0315 | |
| Alternative manufacturing methods for tubing and forged components. | 1st Jan 1937 | Box 151 \ 2 scan0316 | |
| Request to produce four knife edges for a shock damper test rig. | 1st Jan 1937 | Box 151 \ 2 scan0317 | |
| Issues and modifications for the Wraith II front suspension shock damper valve block. | 4th Jan 1937 | Box 151 \ 2 scan0318 | |
| Requesting a report on the assembly method for American-style rubber-ended connecting links for roll rods. | 22th Jan 1937 | Box 151 \ 2 scan0319 | |
| Request to produce parts from drawings for a shock damper test rig. | 29th Jan 1937 | Box 151 \ 2 scan0320 | |
| The inability to reproduce the assembly method for American type rubber loaded connecting links from the Munro Factory. | 5th Feb 1937 | Box 151 \ 2 scan0321 | |
| Shock damper bearings in relation to specific vehicle models and the development of quieter dampers. | 5th Feb 1937 | Box 151 \ 2 scan0322 | |
| Design and testing of serrated pressed fits for levers and ball pins on Wraith II and Phantom III models. | 2nd Mar 1937 | Box 151 \ 2 scan0323 | |
| Summary of experience and testing on rubber joint connecting tubes for the Phantom III and Wraith models. | 4th Aug 1937 | Box 151 \ 2 scan0324 | |
| Modifications to the Wraith II type end plug and bump chassis to overcome a fitting difficulty. | 4th Mar 1937 | Box 151 \ 2 scan0325 | |
| Graph showing the torsional stiffness of a ball-pin for a Wraith II shock damper rubber connecting tube. | 17th Feb 1937 | Box 151 \ 2 scan0326 | |
| Graph showing the torsional stiffness of a Phantom III shock damper rubber connecting tube ball pin. | 17th Feb 1937 | Box 151 \ 2 scan0327 | |
| Graph plotting load versus deflection for a Phantom III shock damper rubber connecting tube ball-end. | 10th Feb 1937 | Box 151 \ 2 scan0328 | |
| Graph plotting load versus deflection for a Wraith II shock damper rubber connecting tube ball-end. | 10th Feb 1937 | Box 151 \ 2 scan0329 | |
| Blueprint detailing modifications to rubber joint connecting tubes, end plugs, and pads for the Wraith II chassis. | 26th Feb 1937 | Box 151 \ 2 scan0330 | |
| Failures in the shock damper governor units and the decision regarding the inclusion of a filter. | 22th Mar 1937 | Box 151 \ 2 scan0331 | |
| Performance and proposed testing of rubber-ended connecting links for roll rods and shock absorbers on Phantom III and Wraith chassis. | 24th Apr 1937 | Box 151 \ 2 scan0332 | |
| Blueprint showing specifications for modified American-style ball pins for connecting tubes. | 22th Apr 1917 | Box 151 \ 2 scan0333 | |
| Request to produce 12 sets of rubber glands and associated parts for shock dampers. | 24th May 1937 | Box 151 \ 2 scan0334 | |
| Outlining the development work required on shock dampers, noting the advantages of the Armstrong damper. | 27th May 1937 | Box 151 \ 2 scan0335 | |
| Outlining a development and testing programme for shock dampers and suspension rigs. | 27th May 1937 | Box 151 \ 2 scan0336 | |
| Technical memo detailing requirements and tests for damper rigs, links, suspension, and glands to reduce noise. | 27th May 1937 | Box 151 \ 2 scan0337 | |
| Quotation from Ferranti Ltd. for synchronous stop clocks. | 28th May 1937 | Box 151 \ 2 scan0338 | |
| Specification sheet for a Ferranti synchronous electric stop clock. | 28th May 1937 | Box 151 \ 2 scan0339 | |
| Photograph of a Ferranti stopwatch with a large seconds dial and a smaller minutes sub-dial. | 10th Jun 1938 | Box 151 \ 2 scan0340 | |
| Investigation into recurring complaints of knocking shock dampers and the subsequent actions taken. | 10th Jun 1938 | Box 151 \ 2 scan0341 | |
| Testing and inspection results for various chassis rear dampers. | 7th May 1938 | Box 151 \ 2 scan0342 | |
| Log detailing the inspection, testing, and actions taken on rear dampers for various chassis. | 21th Apr 1938 | Box 151 \ 2 scan0343 | |
| Log sheet detailing tests and actions taken on various chassis dampers. | 28th May 1938 | Box 151 \ 2 scan0344 | |
| Request to alter the mould for Rubber Damper Glands (Rm.379) with new dimensions. | 21th Jun 1937 | Box 151 \ 2 scan0345 | |
| Microscopic views showing the surface and edge of a spring. | 2nd Jul 1937 | Box 151 \ 2 scan0346 | |
| Letter from British Tyre & Rubber Co. Ltd. confirming the price for rubber mouldings. | 2nd Jul 1937 | Box 151 \ 2 scan0347 | |
| Request to produce 12 more damper bushes with a 2° taper to prevent the rubber in Duprene glands from creeping. | 16th Sep 1937 | Box 151 \ 2 scan0348 | |
| Request to send a covering order for rubber mouldings to the British Tyre & Rubber Co., Ltd. | 8th Jul 1937 | Box 151 \ 2 scan0349 | |
| Instruction to fit Duprene damper glands to specific vehicle chassis. | 29th Sep 1937 | Box 151 \ 2 scan0350 | |
| Request for an opinion on the performance ('figure of merit') of hydraulic shock absorbers regarding freedom from knocks. | 14th Oct 1937 | Box 151 \ 2 scan0351 | |
| Hydraulic damper knocks and test results for various car models. | 16th Oct 1937 | Box 151 \ 2 scan0352 | |
| Feedback from retailers about increasing the damping on cars, specifically the Phantom model. | 29th Dec 1937 | Box 151 \ 2 scan0353 | |
| Issues with shock absorbers and damping systems due to dirt and a proposed modification. | 7th Jan 1938 | Box 151 \ 2 scan0354 | |
| Shock damper loads and ride characteristics for the Ph.III model. | 4th Jan 1938 | Box 151 \ 2 scan0355 | |
| Issues with shock absorbers and damping due to dirt in the system and potential modifications. | 7th Jan 1938 | Box 151 \ 2 scan0356 | |
| Retailer desire for increased maximum shock damper loads and related technical considerations. | 4th Jan 1938 | Box 151 \ 2 scan0357 | |
| Complaints of shock damper knocks and investigating the cause. | 20th Jan 1938 | Box 151 \ 2 scan0358 | |
| Proposal for a new damper governor control that can be switched on or off at will for comparison purposes. | 28th Jan 1938 | Box 151 \ 2 scan0359 | |
| Table comparing the angularity and transverse movement of damper links for various models. | 7th Mar 1938 | Box 151 \ 2 scan0360 | |
| Request for blueprints of test pieces and a knurled shaft to determine a suitable bore size for all chassis. | 11th Mar 1938 | Box 151 \ 2 scan0361 | |
| Request for blueprints of a knurled shaft and test pieces, noting a material change and cancellations. | 25th Mar 1938 | Box 151 \ 2 scan0362 | |
| Requesting shock absorber diagrams to compare the original Bentley R.R. damper with the Gordon Armstrong damper on the B.III. | 8th Apr 1938 | Box 151 \ 2 scan0363 | |
| The cracking of shock damper pistons and recommendations for heat treatment. | 4th Aug 1938 | Box 151 \ 2 scan0364 | |
| The production of heat-treatable cast iron shock damper pistons for the Bentley III. | 5th Aug 1938 | Box 151 \ 2 scan0365 | |
| The successful crack testing of new shock damper pistons following an oil quenching process. | 30th Aug 1938 | Box 151 \ 2 scan0366 | |
| Advance print and order for a piston with a thickened rim. | 5th Aug 1938 | Box 151 \ 2 scan0367 | |
| New metal rebound stop for the Bentley 3 & 50 and Wraith 80 models. | 8th Sep 1938 | Box 151 \ 2 scan0368 | |
| Notification about blueprints for a modification to the Rear Shock Damper Link. | 2nd Nov 1938 | Box 151 \ 2 scan0369 | |
| Damper control settings and suggesting experiments for improving ride comfort. | 11th Nov 1938 | Box 151 \ 2 scan0370 | |
| Comparing damper bellows for the Wraith model from two suppliers. | 30th Nov 1938 | Box 151 \ 2 scan0371 | |
| List of work and tests required for various shock damper components and systems. | 13th Dec 1938 | Box 151 \ 2 scan0372 | |
| Issues and required tests for various vehicle frames. | 13th Dec 1938 | Box 151 \ 2 scan0373 | |
| Investigation into the sources of noise, or 'knocks', in rear dampers and proposed solutions. | 22th Dec 1938 | Box 151 \ 2 scan0374 | |
| Issues with dampers, including side loads, knocking noises, and potential solutions. | 22th Dec 1938 | Box 151 \ 2 scan0375 | |
| Upcoming work and testing on B.V. suspension components at Kennington. | 5th Jan 1939 | Box 151 \ 2 scan0376 | |
| Updates and tests on vehicle suspension and noise components. | 5th Jan 1939 | Box 151 \ 2 scan0377 | |
| Noise tests, bumping tests on various components, and developments in shock absorbers. | 5th Jan 1939 | Box 151 \ 2 scan0378 | |
| Lubrication, shock damper testing, and ride improvements for various vehicle models. | 5th Jan 1939 | Box 151 \ 2 scan0379 | |
| Shock damper settings, brake systems for the B.V. series and Silver Wraith, and a new servo. | 5th Jan 1939 | Box 151 \ 2 scan0380 | |
| Damper control system for the B.V. series, proposing a pressure-velocity effect using bi-metal strips. | 6th Feb 1939 | Box 151 \ 2 scan0381 | |
| Investigation into a gear-type shock damper control unit to replace the governor unit on the Bentley and Wraith. | 6th Feb 1939 | Box 151 \ 2 scan0382 | |
| Valve control mechanisms using bimetallic strips and external pumps with different oil viscosities. | 6th Feb 1939 | Box 151 \ 2 scan0383 | |
| Blueprint graph of pressure-velocity curves for a 20° valve with a soft spring using 'Shokoil' at various temperatures. | 6th Feb 1939 | Box 151 \ 2 scan0384 | |
| Graph showing pressure-velocity curves for a 20° valve at different temperatures using Castrol XL oil. | 8th Feb 1939 | Box 151 \ 2 scan0385 | |
| Replacement experimental Operating Pin for the Speedometer Drive & Damper Control Pump on Bentley V & SO Chassis. | 8th Feb 1939 | Box 151 \ 2 scan0386 | |
| Graph showing micrometer readings for valve-lifts against temperature, using a 20° valve and Castrol XL oil. | 21th Feb 1939 | Box 151 \ 2 scan0387 | |
| Technical memo discussing the design and performance of a damper control apparatus. | 21th Feb 1939 | Box 151 \ 2 scan0388 | |
| Damper control, proposing kinetic energy restriction and requesting further tests on the ball valve and spring. | 17th Feb 1939 | Box 151 \ 2 scan0389 | |
| Kinetic energy restriction proposal for the Bentley V damper control and pump priming. | 23th Feb 1939 | Box 151 \ 2 scan0390 | |
| Requesting 24 anodised aluminium balls for use as replenishing valves in shock dampers. | 6th Mar 1939 | Box 151 \ 2 scan0391 | |
| Damper modifications, oil capacity, and heating issues for Bentley & Wraith models. | 9th Mar 1939 | Box 151 \ 2 scan0392 | |
| Specifications for valve float, shock dampers, and Bentley V front and rear damper settings. | 14th Mar 1939 | Box 151 \ 2 scan0393 | |
| Shock damper specification for the Bentley V model, detailing components and assembly instructions. | 14th Mar 1939 | Box 151 \ 2 scan0394 | |
| Blueprint of an extra replenishing valve housing. | 16th Mar 1939 | Box 151 \ 2 scan0395 | |
| Requesting an order for specific rubber glands made from red duprene rubber. | 28th Mar 1939 | Box 151 \ 2 scan0396 | |
| Proposing a new 'autolock' damper control system for Bentley V cars and requesting it be patented. | 25th May 1939 | Box 151 \ 2 scan0397 | |
| Requesting the manufacture of six aluminium buffer supports for testing on new cars. | 12th Jun 1939 | Box 151 \ 2 scan0398 | |
| Request to manufacture 6 more non-locking soft rods for twin valve front dampers due to failures with the hardened versions. | 16th Jun 1939 | Box 151 \ 2 scan0399 | |
| Request to send an official order for a tin of Luvax Shock Absorber Oil. | 4th Jul 1939 | Box 151 \ 2 scan0400 | |
| Inquiring about patents related to a variable leak suspension shock damper. | 15th Aug 1939 | Box 151 \ 2 scan0401 | |
| Scheme for fitting Gordon Armstrong Shock Dampers to the rear axle and related components. | 22th Jan 1940 | Box 151 \ 2 scan0402 | |
| Blueprint showing two suggested schemes for shock damper links. | 26th Jan 1940 | Box 151 \ 2 scan0403 | |
| Letter discussing the properties of anti-freezing mixtures and rebutting a previous article on the topic. | 28th Jan 1911 | Box 151 \ 3 scan0001 | |
| The pros and cons of using glycerine as a non-freezing agent in motorcar engine cooling systems. | 3rd Dec 1912 | Box 151 \ 3 scan0002 | |
| Internal memorandum inquiring about the development of an antifreezing mixture for radiators. | 6th Oct 1914 | Box 151 \ 3 scan0003 | |
| Urgent request to the Experimental Department to find the best antifreeze mixture for radiators. | 8th Oct 1914 | Box 151 \ 3 scan0004 | |
| Letter concerning the most satisfactory anti-freeze mixtures used in Canada. | 10th Oct 1914 | Box 151 \ 3 scan0005 | |
| Letter from J.C. Royce discussing anti-freeze mixtures and their effects on rubber components in cooling systems. | 20th Oct 1914 | Box 151 \ 3 scan0006 | |
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