| Description | Date | Identifier | |
| Minutes of an engineer's conference discussing engine running issues and propeller shaft extensions. | 9th Jul 1941 | Box 159 \ 5 scan0205 | |
| Report discussing engine development, focusing on valve spring surge and petrol consumption. | 11th Jul 1941 | Box 159 \ 5 scan0206 | |
| Persistent issues including servo groans, engine bore wear, steam valves, and piston detonation. | 11th Jul 1941 | Box 159 \ 5 scan0207 | |
| Page of meeting minutes discussing engine component designs, replacements, and specifications. | 11th Jul 1941 | Box 159 \ 5 scan0208 | |
| Meeting notes discussing development issues with pistons, tyres, engines, and springs. | 11th Jul 1941 | Box 159 \ 5 scan0209 | |
| Progress report on various automotive components and vehicle tests. | 11th Jul 1941 | Box 159 \ 5 scan0210 | |
| Meeting notes discussing various vehicle components including axles, chassis, frames, and radiators. | 11th Jul 1941 | Box 159 \ 5 scan0211 | |
| Minutes from a car testers' conference discussing various technical issues and their resolutions. | 11th Aug 1941 | Box 159 \ 5 scan0212 | |
| Meeting minutes or report detailing technical discussions on various engine components and manufacturing processes. | 11th Aug 1941 | Box 159 \ 5 scan0213 | |
| Meeting notes detailing action points for various component tests and design considerations. | 11th Aug 1941 | Box 159 \ 5 scan0214 | |
| Meeting notes detailing progress on various automotive projects including axles, chassis, frames, and engine components. | 11th Aug 1941 | Box 159 \ 5 scan0215 | |
| Testing and characteristics of various helical gear oil pumps. | 19th Jan 1937 | Box 159 \ 6 scan0001 | |
| Formula for calculating the minimum oil pressure required for oil to enter holes in journal bearings. | 19th Jan 1937 | Box 159 \ 6 scan0002 | |
| Disagreement over the calculation for loss of oil pressure to pins due to centrifugal force. | 19th Jan 1937 | Box 159 \ 6 scan0003 | |
| Re-organisation of rig testing equipment for cars, aero engines and manufacturing. | 19th Jan 1937 | Box 159 \ 6 scan0004 | |
| The co-ordination of rig experiments for car work. | 19th Jan 1937 | Box 159 \ 6 scan0005 | |
| Use and testing of helical gear oil pumps. | 19th Jan 1937 | Box 159 \ 6 scan0006 | |
| Requesting rig tests for new Phantom III axle shafts and a flexible steel clutch coupling. | 22th Jan 1937 | Box 159 \ 6 scan0007 | |
| Arranging for a representative to deal with Rubery Owen regarding frames for the Experimental Department. | 22th Jan 1937 | Box 159 \ 6 scan0008 | |
| Instructions for fitting two types of steering rollers to a rig steering box for testing. | 5th Feb 1937 | Box 159 \ 6 scan0009 | |
| Crankcase depression tests comparing different breather methods to manage oil vapour and prevent oil leaks. | 24th Feb 1937 | Box 159 \ 6 scan0010 | |
| Requesting the manufacture of a journal and centre plate for a brake testing rig. | 2nd Apr 1937 | Box 159 \ 6 scan0011 | |
| Requesting the manufacture of a cast aluminium pulley wheel for a brake test rig. | 12th Apr 1937 | Box 159 \ 6 scan0012 | |
| Request for a standard Bentley speedometer and cable for a brake testing rig. | 16th Apr 1937 | Box 159 \ 6 scan0013 | |
| Request to manufacture pulleys and a junction piece for a brake test apparatus. | 5th May 1937 | Box 159 \ 6 scan0014 | |
| Outlining the required development work on shock dampers, listing the advantages of the Armstrong damper. | 27th May 1937 | Box 159 \ 6 scan0015 | |
| Programme for the development and testing of shock dampers and associated damper rigs. | 27th May 1937 | Box 159 \ 6 scan0016 | |
| Requirements for damper rigs, links, suspension, and glands, with a focus on noise reduction and rubber components. | 27th May 1937 | Box 159 \ 6 scan0017 | |
| Requesting a rig test for new Production 25/30 steering rollers from a different supplier, the Hoffmann Co. | 28th May 1937 | Box 159 \ 6 scan0018 | |
| Deflection tests for rear axle pinion bearings. | 4th Jun 1937 | Box 159 \ 6 scan0019 | |
| Requesting the fitting of a Ransome & Marles roller follower to a rig steering box for testing purposes. | 16th Jun 1937 | Box 159 \ 6 scan0020 | |
| Drawing of a special rig steering cam. | 12th Jul 1937 | Box 159 \ 6 scan0021 | |
| Requesting a modification to a rig steering box by fitting a new roller follower. | 12th Jul 1937 | Box 159 \ 6 scan0022 | |
| Rig tests on Hoffmann 25/30 steering rollers following a previous failure. | 15th Jul 1937 | Box 159 \ 6 scan0023 | |
| Testing S/M nuts as a substitute for S/S nuts for the Phantom III carburetter drain pipe unions. | 24th Aug 1937 | Box 159 \ 6 scan0024 | |
| Rig test procedure for a 'Dumb Bell' Link G.84925 to investigate fatigue failure. | 25th Aug 1937 | Box 159 \ 6 scan0025 | |
| Test procedure for 'Dumb Bell Links' to investigate failures during rotation. | 30th Sep 1937 | Box 159 \ 6 scan0026 | |
| Advisability of continuing with Phantom III rig tests. | 15th Oct 1937 | Box 159 \ 6 scan0027 | |
| Issues with Phantom III bottom tappets, requesting a switch to standard production valve gear. | 16th Oct 1937 | Box 159 \ 6 scan0028 | |
| Asking whether to continue rig tests on Phantom III parts due to a decision to cut spending. | 19th Oct 1937 | Box 159 \ 6 scan0029 | |
| Requesting modifications to a PH.III Fan Belt & Water Pump Rig Engine for endurance testing. | 24th Jan 1938 | Box 159 \ 6 scan0030 | |
| Obtaining a concentric Bentley brake drum for a brake lining test rig. | 3rd Feb 1938 | Box 159 \ 6 scan0031 | |
| Letter to Borg & Beck Ltd. describing a rig designed to measure thrust on clutch pressure plates and findings from tests. | 25th Feb 1938 | Box 159 \ 6 scan0032 | |
| Letter to Messrs. Borg & Beck Ltd. discussing a rig for measuring thrust on a pressure plate. | 25th Feb 1938 | Box 159 \ 6 scan0033 | |
| The stripping, examination, and potential refit of a bearing rig unit. | 26th Feb 1938 | Box 159 \ 6 scan0034 | |
| Request to rebuild a PH.III rig engine with only four crankshaft bearings and sperm oil for testing on fans and water pumps. | 8th Mar 1938 | Box 159 \ 6 scan0035 | |
| The testing and modification of a Borg & Beck clutch test rig for Cricklewood. | 9th Jun 1938 | Box 159 \ 6 scan0036 | |
| Receiving two blueprints for a shock damper test rig, with instructions for 'B' Dept. | 19th Dec 1938 | Box 159 \ 6 scan0037 | |
| Completion dates for a series of experiments on various automotive components. | 19th May 1939 | Box 159 \ 6 scan0038 | |
| Supporting an increase in test rig availability and a comprehensive new testing equipment scheme. | 29th Jun 1939 | Box 159 \ 6 scan0039 | |
| The test rig procedures to determine the life of varying axle shaft sizes and wheel bearings. | 3rd Jul 1939 | Box 159 \ 6 scan0040 | |
| Test results for four 45 mm shafts that were run at 2 tons for 250,000 revolutions. | 3rd Jul 1939 | Box 159 \ 6 scan0041 | |
| Enquiry to David Brown & Sons regarding the supply of gearboxes for a shock damper test rig. | 5th Jul 1939 | Box 159 \ 6 scan0042 | |
| Quotation from David Brown & Sons for a 'Radicon' worm reduction gear unit for a shock damper test rig. | 6th Jul 1939 | Box 159 \ 6 scan0043 | |
| Quotation from David Brown & Sons to Rolls Royce for shock damper test rig components. | 6th Jul 1939 | Box 159 \ 6 scan0044 | |
| Quotation from David Brown & Sons (Hudd) Ltd. for a heavy type output shaft. | 1st May 1938 | Box 159 \ 6 scan0045 | |
| Specification sheet for Radicon Worm Reducers, Type 'RHU'. | 1st May 1938 | Box 159 \ 6 scan0046 | |
| Specification sheet for David Brown Radicon Worm Reducers, type 'RHU' (single reduction). | 12th Jul 1939 | Box 159 \ 6 scan0047 | |
| Quotation from David Brown & Sons for a Shock Damper Test Rig with gear unit and couplings. | 12th Jul 1939 | Box 159 \ 6 scan0048 | |
| Quotation from David Brown & Sons for geared motor units, reducing gear units, and flexible couplings with pricing. | 12th Jul 1939 | Box 159 \ 6 scan0049 | |
| Quote from David Brown & Sons for a helical geared motor unit and a flexible coupling. | 1st May 1938 | Box 159 \ 6 scan0050 | |
| Specification sheet for the 'Radicon' worm reducer, type 'RHU'. | 1st May 1938 | Box 159 \ 6 scan0051 | |
| Specification sheet for David Brown Radicon Type 'RHU' worm reducers. | 1st May 1938 | Box 159 \ 6 scan0052 | |
| Specification sheet for Radicon Worm Reducers, Type RHU. | 1st May 1938 | Box 159 \ 6 scan0053 | |
| Specification sheet for David Brown Radicon Worm Reducers, type 'RHU' (single reduction). | 1st May 1938 | Box 159 \ 6 scan0054 | |
| Leaflet for patented Cone-Ring Flexible Couplings, available in heavy and medium duty types. | 1st May 1938 | Box 159 \ 6 scan0055 | |
| Specification sheet for Medium and Heavy Duty 'David Brown' cone-ring flexible couplings. | 1st May 1938 | Box 159 \ 6 scan0056 | |
| Technical brochure for 'Cone-Ring' flexible couplings, detailing their functions, design principles, and advantages. | 13th Mar 1940 | Box 159 \ 6 scan0057 | |
| Distributing a report on proposed test rigs and soliciting ideas for further rigs. | 13th Mar 1940 | Box 159 \ 6 scan0058 | |
| List of test rigs for various vehicle components. | 13th Mar 1940 | Box 159 \ 6 scan0059 | |
| Various test rigs for automotive components such as cranks, gearboxes, valves, and pumps. | 13th Mar 1940 | Box 159 \ 6 scan0060 | |
| Setup of test rigs for various engine components like pumps, valves, and springs. | 13th Mar 1940 | Box 159 \ 6 scan0061 | |
| Cover memo for a report by Bastow on proposed test rigs, inviting further ideas. | 13th Mar 1940 | Box 159 \ 6 scan0062 | |
| Suggested list and commentary on test rigs for various vehicle components. | 13th Mar 1940 | Box 159 \ 6 scan0063 | |
| Various test rigs for automotive components like gearboxes, pumps, and steering. | 13th Mar 1940 | Box 159 \ 6 scan0064 | |
| Proposal for a test rig to evaluate various engine and chassis components. | 13th Mar 1940 | Box 159 \ 6 scan0065 | |
| Confirming the arrangement to build test rigs for oil filters and air cleaners. | 16th Mar 1940 | Box 159 \ 6 scan0066 | |
| Requirements and priorities for various component test rigs. | 13th Apr 1930 | Box 159 \ 6 scan0067 | |
| Justification and use of a rig for testing gearbox cones. | 13th Apr 1930 | Box 159 \ 6 scan0068 | |
| Suggested list of test rigs with notes on their status, location, and potential setup. | 15th Mar 1940 | Box 159 \ 6 scan0069 | |
| Various test rigs for automotive components such as gearboxes, pumps, and valves. | 13th Mar 1940 | Box 159 \ 6 scan0070 | |
| The setup of test rigs for various engine components like pumps, valves, and springs. | 13th Mar 1940 | Box 159 \ 6 scan0071 | |
| Request to manufacture an axle shaft endurance rig, a wheel endurance rig, and door locks from drawings P.L.162 and P.L.172. | 17th Apr 1940 | Box 159 \ 6 scan0072 | |
| Requesting assistance with the layout and installation of test rigs in the workshop. | 19th Apr 1940 | Box 159 \ 6 scan0073 | |
| Requirements for test rigs, specifically for wheel tests and fan belt endurance tests. | 9th Apr 1940 | Box 159 \ 6 scan0074 | |
| Planning and requirements for various component endurance tests. | 9th Apr 1940 | Box 159 \ 6 scan0075 | |
| List of various test rigs and their specifications. | 9th Apr 1940 | Box 159 \ 6 scan0076 | |
| List of required motors, bedplates, and a generator for various test rigs. | 9th Apr 1940 | Box 159 \ 6 scan0077 | |
| Confirmation memo for the removal of car rigs and motors for the 'Clan' to the Clan Foundry. | 27th May 1940 | Box 159 \ 6 scan0078 | |
| The redesign of an endurance test rig for axle shafts, wheels, etc. | 15th Jun 1940 | Box 159 \ 6 scan0079 | |
| Re-design and modification of an endurance test rig for axle-shafts and wheels. | 15th Jun 1940 | Box 159 \ 6 scan0080 | |
| Material shortage, suggesting following Bastow's specification for car division test rigs to avoid extravagance. | 17th Jun 1940 | Box 159 \ 6 scan0081 | |
| Test results of capacity tests made on a lower half on Clan rig. | 5th Aug 1940 | Box 159 \ 6 scan0082 | |
| Design and application of test rigs for windscreen chains and leaf springs. | 25th Aug 1940 | Box 159 \ 6 scan0083 | |
| Spring rebound dynamics and the design of a fan, belt, and water pump test rig. | 25th Aug 1940 | Box 159 \ 6 scan0084 | |
| Test rig setups for various automotive components including valves, oil pumps, and air cleaners. | 25th Aug 1940 | Box 159 \ 6 scan0085 | |
| The procedure and timeframe for testing a cleaner using a suction blower. | 25th Aug 1940 | Box 159 \ 6 scan0086 | |
| Letter from Rotol Airscrews Limited concerning rig tests on a Vulture I engine. | 25th Nov 1940 | Box 159 \ 6 scan0087 | |
| Tests conducted on a Bentley engine to evaluate the effectiveness of extra cylinder lubrication from a hole in the connecting rod. | 10th Feb 1941 | Box 159 \ 6 scan0088 | |
| Analysis of oil thrown onto cylinder bores from drilled versus non-drilled connecting rods, and a discussion on piston seizure in Bentley engines. | 4th Apr 1935 | Box 159 \ 6 scan0089 | |
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