| Description | Date | Identifier | |
| Request to make two Phantom III exhaust tail pipe adaptors as per a sketch. | 2nd Dec 1936 | Box 93 \ 1 scan0063 | |
| Notification regarding a revision to the Phantom III exhaust system to provide clearance for a wiring conduit. | 2nd Dec 1936 | Box 93 \ 1 scan0064 | |
| Disappointment and required modifications for the new Phantom III exhaust system. | 4th Dec 1936 | Box 93 \ 1 scan0065 | |
| Completion of designs for the Phantom III simplified exhaust system. | 5th Dec 1936 | Box 93 \ 1 scan0066 | |
| Requesting accurate cost comparisons between electrically welded and drawn tubes due to conflicting information. | 8th Dec 1936 | Box 93 \ 1 scan0067 | |
| Exhaust boom noise issues at certain speeds and potential remedies. | 7th Dec 1936 | Box 93 \ 1 scan0068 | |
| Proactive car improvements based on inspectors' reports, specifically a planned test of rubber between the body and chassis. | 8th Dec 1936 | Box 93 \ 1 scan0069 | |
| Query regarding a material change for the carburetter air silencer from 28 SWG to 26 SWG planished steel due to sourcing difficulties. | 15th Dec 1936 | Box 93 \ 1 scan0070 | |
| Modifications to the Phantom III exhaust system to reduce weight and cost. | 17th Nov 1936 | Box 93 \ 1 scan0071 | |
| Rear silencer placement for future designs, referencing limitations on the Phantom III model. | 17th Nov 1936 | Box 93 \ 1 scan0072 | |
| Blueprint for a modified Phantom III exhaust system. | 12th Nov 1936 | Box 93 \ 1 scan0073 | |
| Material ordering and testing for the Phantom III exhaust system. | 12th Nov 1936 | Box 93 \ 1 scan0074 | |
| Material gauge for a carburetter air silencer. | 18th Dec 1936 | Box 93 \ 1 scan0075 | |
| Standardisation of the Phantom III exhaust system to replace Staybrite exhaust lag with nickel-plated mild steel. | 27th Nov 1936 | Box 93 \ 1 scan0076 | |
| The reverse of a 'Standardisation of Parts' form, noting nil cost for new tools and order details. | 5th Nov 1936 | Box 93 \ 1 scan0077 | |
| Inadequate experimental exhaust system and a request for modification. | 22th Dec 1936 | Box 93 \ 1 scan0078 | |
| The standardization and material ordering for a new type of exhaust system for the Phantom III model. | 21th Dec 1936 | Box 93 \ 1 scan0079 | |
| Requesting instructions for either the present or a modified Phantom III exhaust system. | 31th Dec 1936 | Box 93 \ 1 scan0080 | |
| Request to manufacture a mild steel pipe for test purposes on a Phantom III exhaust system. | 7th Jan 1937 | Box 93 \ 1 scan0081 | |
| Changes to the Phantom III exhaust system for production standardisation. | 19th Jan 1937 | Box 93 \ 1 scan0082 | |
| Request to fabricate experimental exhaust system components for the Phantom III for testing purposes. | 20th Jan 1937 | Box 93 \ 1 scan0083 | |
| Manufacture of Phantom III exhaust systems from different treated mild steels to test their non-corrosive qualities. | 20th Jan 1937 | Box 93 \ 1 scan0084 | |
| Requesting the creation of an experimental silencer for a Phantom III exhaust system. | 20th Jan 1937 | Box 93 \ 1 scan0085 | |
| The development of the Phantom III exhaust system, addressing noise issues and material changes for cost savings. | 20th Jan 1937 | Box 93 \ 1 scan0086 | |
| Estimation of cost savings for the Phantom III exhaust system by using aluminised mild steel. | 13th Jan 1937 | Box 93 \ 1 scan0087 | |
| Material ordering deadlines for the Phantom III 'C' Series and the decision to not proceed with a thermostat scheme. | 24th Dec 1936 | Box 93 \ 1 scan0088 | |
| The approval and fitting of exhaust tail pipe adaptors. | 1st Feb 1937 | Box 93 \ 1 scan0089 | |
| Request for the manufacture of parts for a Phantom III Experimental Exhaust System. | 2nd Feb 1937 | Box 93 \ 1 scan0090 | |
| Confirmation to instruct production for chromium plated exhaust tail pipe extension pieces for all chassis. | 3rd Feb 1937 | Box 93 \ 1 scan0091 | |
| Request to make a chromium-plated tailpipe extension for a Phantom III exhaust system for a special customer. | 11th Feb 1937 | Box 93 \ 1 scan0092 | |
| Request to fabricate a 'Y' piece and three baffles for a Phantom III experimental silencer. | 6th Mar 1937 | Box 93 \ 1 scan0093 | |
| Noise originating from the front expansion box of the 33-EX exhaust system. | 23th Mar 1937 | Box 93 \ 1 scan0094 | |
| Requesting the fabrication of two experimental downtake pipes for an exhaust system. | 2nd Apr 1937 | Box 93 \ 1 scan0095 | |
| Responding to a telegram about the exhaust system, connecting rods and main bearings for chassis 35-EX. | 5th Apr 1937 | Box 93 \ 1 scan0096 | |
| Broken exhaust system connection on a 32-EX Phantom III and the subsequent temporary repair. | 15th Jul 1937 | Box 93 \ 1 scan0097 | |
| Investigation into exhaust noise on the Phantom III vehicle. | 23th Oct 1937 | Box 93 \ 1 scan0098 | |
| Collection of memo extracts regarding experiments on exhaust system design to reduce noise. | 15th Oct 1937 | Box 93 \ 1 scan0099 | |
| Modifications to the exhaust system to cure drone issues and comparing expansion box sizes. | 15th Oct 1937 | Box 93 \ 1 scan0100 | |
| Material change for the Phantom III exhaust system from Staybrite to aluminised steel, including cost analysis and a proposed design modification. | 22th Nov 1937 | Box 93 \ 1 scan0101 | |
| Modifications to the aluminized exhaust system for the Phantom III. | 29th Nov 1937 | Box 93 \ 1 scan0102 | |
| Alteration notice regarding exhaust fittings for the Phantom III Chassis. | 11th Jan 1938 | Box 93 \ 1 scan0103 | |
| Modifications to the Phantom III exhaust downtake pipe and intermediate pipe support to accommodate a Wraith-type steering gear and modified starter motor. | 13th Apr 1938 | Box 93 \ 1 scan0104 | |
| Experimental design for lubricating the exhaust support bearings on a Phantom III to eliminate squeaking. | 26th Apr 1938 | Box 93 \ 1 scan0105 | |
| Requesting to fit an oil feed scheme to the exhaust system suspension links on a Phantom III car. | 30th Apr 1938 | Box 93 \ 1 scan0106 | |
| Design and testing of a rubber suspension system for the Phantom III exhaust. | 3rd Jun 1938 | Box 93 \ 1 scan0107 | |
| Design of connecting rods for the Spectre engine, specifically addressing dismantling difficulties. | 23th Mar 1933 | Box 93 \ 1 scan0108 | |
| Alternative strap type of connecting rod for the Spectre Engine. | 31th Jul 1934 | Box 93 \ 1 scan0109 | |
| Modification to Spectre connecting rods to resolve a bearing failure. | 15th Nov 1934 | Box 93 \ 1 scan0110 | |
| Proposal to modify the Spectre connecting rod design to simplify the manufacturing process. | 15th Feb 1935 | Box 93 \ 1 scan0111 | |
| Secret memo discussing modifications to oil grooves in Spectre strap-type connecting rods, referencing blueprint LeC.4624. | 3rd Aug 1935 | Box 93 \ 1 scan0112 | |
| Drawing detailing modifications to the oil grooves of a connecting rod big end bush for the Spectre engine. | 3rd Aug 1935 | Box 93 \ 1 scan0113 | |
| Secret memorandum about a modification to the Spectre connecting rod bolts to prevent stretching. | 17th Aug 1935 | Box 93 \ 1 scan0114 | |
| Request for the weights of Spectre connecting rods, pistons, rings, and gudgeon pins. | 6th Nov 1935 | Box 93 \ 1 scan0115 | |
| Providing blueprints with information on Phantom III connecting rod weights. | 8th Nov 1935 | Box 93 \ 1 scan0116 | |
| Blueprint detailing the weights of Spectre engine connecting-rods and pistons. | 6th Nov 1935 | Box 93 \ 1 scan0117 | |
| List specifying the weights of large and small ends for Spectre, Marine, and Plain type rods. | 22th Jan 1936 | Box 93 \ 1 scan0118 | |
| Design and experimental clearance of Phantom III marine-type connecting rods. | 5th Feb 1936 | Box 93 \ 1 scan0119 | |
| Requesting works prints and instructions for a modification to Phantom III connecting rods. | 23th Mar 1936 | Box 93 \ 1 scan0120 | |
| Reconsideration of deleting an oil hole in connecting rods to manage oil consumption and lubrication. | 19th Aug 1936 | Box 93 \ 1 scan0121 | |
| Change to the panel milling for Phantom III connecting rods. | 27th Oct 1936 | Box 93 \ 1 scan0122 | |
| The distortion test of a connecting rod under various conditions. | 7th Dec 1936 | Box 93 \ 1 scan0123 | |
| Distortion test results for a Phantom III forked connecting rod and bearing under a 5000lb load. | 3rd Dec 1936 | Box 93 \ 1 scan0124 | |
| Distortion test results for a forked connecting rod and bearing under a 5,000lb load. | 3rd Dec 1936 | Box 93 \ 1 scan0125 | |
| Cost and potential issues of using articulated rods on the Phantom III engine. | 29th Jan 1937 | Box 93 \ 1 scan0126 | |
| Improvements and alternatives for Phantom III big end bearings and connecting rods. | 2nd Feb 1937 | Box 93 \ 1 scan0127 | |
| On the design considerations and trade-offs for using articulated rods on the Phantom III engine. | 13th Feb 1937 | Box 93 \ 1 scan0128 | |
| Request to manufacture experimental Phantom III connecting rods to test an alternative to chromium plating. | 24th Feb 1937 | Box 93 \ 1 scan0129 | |
| Reporting the failure of Phantom III forked connecting rods and requesting a design modification. | 7th May 1937 | Box 93 \ 1 scan0130 | |
| The redesign and strengthening of Phantom III connecting rods following a failure. | 28th May 1937 | Box 93 \ 1 scan0131 | |
| Manufacturing modification to Phantom III connecting rods and establishing a new procedure for future changes. | 19th Jun 1937 | Box 93 \ 1 scan0132 | |
| Instructions for detailing a set of connecting rods with A.C.2 big end bushes for the Continental Phantom III car. | 28th Aug 1937 | Box 93 \ 1 scan0133 | |
| New drawings for forked connecting rods and bearing bushes for the Phantom III chassis. | 1st Sep 1937 | Box 93 \ 1 scan0134 | |
| Methods for fitting the Phantom III connecting rod big end. | 2nd Sep 1937 | Box 93 \ 1 scan0135 | |
| Instructions regarding alterations to Phantom III Chassis connecting rods using Halls' Alloy Bearing Bushes. | 2nd Sep 1937 | Box 93 \ 1 scan0136 | |
| Standardisation of parts for the Phantom III, regarding modified milling of connecting rod panels. | 19th Oct 1937 | Box 93 \ 1 scan0137 | |
| Cost estimate for new tools and a modification request to increase the life of milling cutters. | 18th Jan 1937 | Box 93 \ 1 scan0138 | |
| Internal request for a full cost analysis of Phantom III and Bentley connecting rods. | 31th Jan 1938 | Box 93 \ 1 scan0139 | |
| Instructions for an experiment concerning a Phantom III chassis connecting rod big end bush made from die-cast AC.9 material. | 19th May 1938 | Box 93 \ 1 scan0140 | |
| Modifications and material specifications for the Phantom III A.C.9 blade connecting rod big end bearing. | 9th Jan 1939 | Box 93 \ 1 scan0141 | |
| 'Spectre' project, sending a drawing of the front engine suspension. | 19th Mar 1934 | Box 93 \ 1 scan0142 | |
| Drawing LeC.3839, detailing an alternative engine suspension for the 'Spectre' engine crankcase. | 20th Mar 1934 | Box 93 \ 1 scan0143 | |
| Requesting the production of aluminum blocks for the Spectre Engine Mounting. | 14th Sep 1934 | Box 93 \ 1 scan0144 | |
| The issue of a covering order to clear an invoice for four Rear Engine Rubbers. | 25th Sep 1934 | Box 93 \ 1 scan0145 | |
| Experimental modification to a Spectre Front Engine Mounting. | 25th Sep 1934 | Box 93 \ 1 scan0146 | |
| Alternative front engine mounting for the Spectre, referencing drawing LeC.4127. | 3rd Oct 1934 | Box 93 \ 1 scan0147 | |
| Adhesion problems with Spectre Engine Rubbers supplied by the Leyland & Birmingham Rubber Co. | 16th Oct 1934 | Box 93 \ 1 scan0148 | |
| Spectre engine suspension, referencing drawing N. Sch/4030. | 1st May 1934 | Box 93 \ 1 scan0149 | |
| Drawing LeC.4507 for a deeper rubber adapted to the Spectre front engine mounting. | 24th May 1935 | Box 93 \ 1 scan0150 | |
| Deeper rubber for front engine mounting on the Spectre Chassis, detailing three parts being issued in advance. | 29th May 1935 | Box 93 \ 1 scan0151 | |
| Letter to The British Tyre & Rubber Co. Ltd. requesting an urgent estimate for a mould to produce experimental rubbers. | 29th May 1935 | Box 93 \ 1 scan0152 | |
| Letter regarding a request for three sets of experimental Engine Mounting Housings with varying hardness. | 29th May 1935 | Box 93 \ 1 scan0153 | |
| Quotation letter from British Tyre & Rubber Co. Ltd. for engine mounting rubbers and the required mould. | 30th May 1935 | Box 93 \ 1 scan0154 | |
| Requesting the production of steel components for Spectre front engine mounting rubbers. | 31th May 1935 | Box 93 \ 1 scan0155 | |
| Production of new engine rubbers for Spectre, F.87439 and requesting an order. | 6th Jun 1935 | Box 93 \ 1 scan0156 | |
| Sample of a front engine mounting rubber and its quality. | 6th Jun 1935 | Box 93 \ 1 scan0157 | |
| Urgent memo detailing the despatch of steel casings and distance pieces to the British Tyre & Rubber Co. Ltd. | 6th Jun 1935 | Box 93 \ 1 scan0158 | |
| Letter to a supplier requesting the urgent production of engine mounting rubbers. | 6th Jun 1935 | Box 93 \ 1 scan0159 | |
| Secret memo regarding a modification for the Spectre engine mounting to correct distortion and reduced load capacity. | 6th Jun 1935 | Box 93 \ 1 scan0160 | |
| Secret memorandum regarding instructions for improved Spectre engine mountings. | 7th Jun 1935 | Box 93 \ 1 scan0161 | |
| Fitting options for a Spectre engine mounting. | 12th Jun 1935 | Box 93 \ 1 scan0162 | |
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