| Description | Date | Identifier | |
| Slow progress on the Bensport engine supercharger project and potential suppliers. | 4th Oct 1932 | Box 179b \ 1 img100 | |
| Technical discussion on Bensport brakes, considering increased drum size and automatic adjustment for high-speed cars. | 4th Oct 1932 | Box 179b \ 1 img101 | |
| Lockheed braking system's intensifier and the potential for adding a forward-only servo. | 1st Oct 1932 | Box 179b \ 1 img102 | |
| Overheating exhaust valve guides and suggesting salt cooling as a remedy. | 1st Oct 1932 | Box 179b \ 1 img103 | |
| Testing of three modified clutches, resolving faults like pedal vibration, and proposing a patent for the improved mechanism. | 4th Oct 1932 | Box 179b \ 1 img104 | |
| Semi-hydraulic brake system for motorcars for patent purposes. | 1st Oct 1932 | Box 179b \ 1 img105 | |
| Modifications for 'C', 'D', 'E', and 'F' type chassis prints. | 26th Oct 1932 | Box 179b \ 1 img106 | |
| Obsolescence of certain body drawing prints and requesting new ones. | 7th Oct 1932 | Box 179b \ 1 img107 | |
| Car body life, the removal of the body subframe, and its impact on chassis rigidity. | 7th Oct 1932 | Box 179b \ 1 img108 | |
| Outlining the causes for a delay in delivering a car body and a revised delivery date. | 7th Oct 1932 | Box 179b \ 1 img109 | |
| Design changes and specifications for the Bentcroft radiator. | 10th Oct 1932 | Box 179b \ 1 img110 | |
| Drawing for a radiator matrix and a request to test an alternative Harrison Matrix design. | 12th Oct 1932 | Box 179b \ 1 img111 | |
| Design changes to the sloping footboard for the Bensport model. | 12th Oct 1932 | Box 179b \ 1 img112 | |
| Communication breakdown and responsibilities concerning coachwork by Park Ward & Co. | 12th Oct 1932 | Box 179b \ 1 img113 | |
| Modifications to the 25HP clutch to align with improvements for the Peregrine and P.2 models. | 17th Oct 1932 | Box 179b \ 1 img114 | |
| Cause of rattles in Peregrine bodies, attributing it to hydraulic shock dampers and debating chassis rigidity vs. body construction. | 13th Oct 1932 | Box 179b \ 1 img115 | |
| Car body strength, weight, and construction, comparing them to American equivalents and debating future modifications. | 17th Oct 1932 | Box 179b \ 1 img116 | |
| Alterations and approvals for a chassis dynamo vibrator regulator and its components. | 17th Oct 1932 | Box 179b \ 1 img117 | |
| Merits and procurement options for different types of engine blowers. | 17th Oct 1932 | Box 179b \ 1 img118 | |
| Modifications and specifications for the Bensport radiator and shutters. | 21th Oct 1932 | Box 179b \ 1 img119 | |
| Modification of a Bensport bonnet fitting to be located at the dash. | 19th Oct 1932 | Box 179b \ 1 img120 | |
| Properties and potential uses of zinc die casting metal for car parts. | 21th Oct 1932 | Box 179b \ 1 img121 | |
| Design work and patents for a semi-expanding carburetter and a shock damper. | 22th Oct 1932 | Box 179b \ 1 img122 | |
| Novel brake system design for the Bensport model, considering hydraulic transmission and patentability. | 10th Oct 1932 | Box 179b \ 1 img123 | |
| Novel clutch actuation system and proposed future work on an epicyclic gearbox for the 'Spectre' project. | 24th Oct 1932 | Box 179b \ 1 img124 | |
| Issues with Kelloch brakes and proposing new schemes for hydraulically operated brakes to prevent fluid leaks. | 24th Oct 1932 | Box 179b \ 1 img125 | |
| Various engine options for a chassis, comparing the J.1, Peregrine, and a supercharged variant. | 24th Oct 1932 | Box 179b \ 1 img126 | |
| Technical memorandum discussing the design of a blower, gear types, and drive mechanisms. | 30th Apr 1940 | Box 179b \ 1 img127 | |
| 'Spectre' engine's 3.250' bore and making its parts interchangeable with the Bensport (J.1.) engine. | 24th Oct 1932 | Box 179b \ 1 img128 | |
| Alternate proposals for a torsionally flexible coupling, comparing rubber and fabric types. | 27th Oct 1932 | Box 179b \ 1 img129 | |
| Different scheme for hydraulically operated brakes, comparing it to a Lockheed system. | 27th Oct 1932 | Box 179b \ 1 img130 | |
| Technical memorandum regarding the Bensport change gear tower and lever. | 28th Oct 1932 | Box 179b \ 1 img131 | |
| Modifications to a brake system for 14-inch diameter brake drums. | 28th Oct 1972 | Box 179b \ 1 img132 | |
| Investigation of a higher ratio gear for the Peregrine casing rear axle. | 1st Oct 1932 | Box 179b \ 1 img133 | |
| Modifications to the 14' front brake drums and associated components. | 29th Oct 1932 | Box 179b \ 1 img134 | |
| Proposal to strengthen the gearbox's 3rd motion shaft following a failure, detailing modifications. | 2nd Nov 1932 | Box 179b \ 1 img135 | |
| Development, testing, and commercial strategy for the Bensport engine. | 2nd Nov 1932 | Box 179b \ 1 img136 | |
| Development of governor-controlled shock dampers, patent considerations, and design interchangeability. | 2nd Nov 1932 | Box 179b \ 1 img137 | |
| Design considerations for the Bensport hydraulic brake transmission system. | 2nd Nov 1932 | Box 179b \ 1 img138 | |
| Methods for returning oil from actuating cylinders using engine vacuum. | 2nd Nov 1932 | Box 179b \ 1 img139 | |
| Confirming a conversation about the coachwork and testing of experimental cars. | 2nd Nov 1932 | Box 179b \ 1 img140 | |
| Proposed revisions to the Bensport clutch and flywheel for the J.1. engine. | 24th Nov 1932 | Box 179b \ 1 img141 | |
| Revised layout and modifications for installing a J.1 engine into a Bensport frame. | 24th Nov 1932 | Box 179b \ 1 img142 | |
| Proposing modifications to the Bensport cross steering levers and suggesting the removal of the leather cover. | 24th Nov 1932 | Box 179b \ 1 img143 | |
| Memo discussing progress on Peregrine bodies, outlining delivery dates, and requesting a sample wheel nut from Park Wards. | 5th Nov 1932 | Box 179b \ 1 img144 | |
| The design and specifications of the Bentsport gearbox, including its servo, governor, and speedometer. | 5th Nov 1932 | Box 179b \ 1 img145 | |
| Need for hydraulic presses of 5 to 25 tons capacity for production economy. | 27th Nov 1932 | Box 179b \ 1 img146 | |
| Technical analysis on the design and performance considerations for starter motors. | 7th Nov 1932 | Box 179b \ 1 img147 | |
| Oil temperature issues and potential cooling solutions for the Peregrine engine. | 7th Nov 1932 | Box 179b \ 1 img148 | |
| Listing drawings for three crossmembers, with a note that further information on brake linkage will follow. | 27th Nov 1932 | Box 179b \ 1 img149 | |
| Two alternative designs for the Bensport (J.1.) rear engine suspension. | 7th Nov 1932 | Box 179b \ 1 img150 | |
| Scheme 3583, concerning the arrangement of the starting handle and front crossmembers. | 1st Nov 1932 | Box 179b \ 1 img151 | |
| Proprietary servo system design with two freewheels and its patentability. | 7th Nov 1932 | Box 179b \ 1 img152 | |
| Design and layout of the instrument board for a new car programme, including a sketch. | 10th Nov 1932 | Box 179b \ 1 img153 | |
| Modifications to the Bensport gearbox to fix the excessive overhang of the 2nd speed slider. | 12th Nov 1932 | Box 179b \ 1 img154 | |
| The design of a Bensport hand brake lever, focusing on sealing the floorboards and preventing rattles. | 12th Nov 1932 | Box 179b \ 1 img155 | |
| Final design and suspension of the B.3. radiator bottom tank. | 12th Nov 1932 | Box 179b \ 1 img156 | |
| Design for an instrument board, including speedometer, tachometer and shock damper controls. | 14th Feb 1932 | Box 179b \ 1 img157 | |
| Confirming layout dimensions for B.3, including the dash, gearbox, and distribution box. | 15th Nov 1932 | Box 179b \ 1 img158 | |
| Design considerations for aero engines, including cylinder blocks, crankshafts, and balance weights. | 15th Nov 1932 | Box 179b \ 1 img159 | |
| Engine improvements, materials, reliability, and performance ratings for various aircraft. | 16th Nov 1932 | Box 179b \ 1 img160 | |
| The strengthening of the Bensport Gearbox 1st and 3rd motion shafts. | 16th Nov 1932 | Box 179b \ 1 img161 | |
| Expressing a preference for the stroke proportions on a 5.5 engine, referencing the Kestrel engine. | 16th Nov 1932 | Box 179b \ 1 img162 | |
| Design recommendations and considerations for torque reaction dampers. | 16th Nov 1932 | Box 179b \ 1 img163 | |
| Bensport brake differentials and the use of an aluminum outer casing. | 16th Nov 1932 | Box 179b \ 1 img164 | |
| Modifications to the Bensport clutch operation for the J.1 engine. | 16th Nov 1932 | Box 179b \ 1 img165 | |
| Outlining further ideas for a hydraulic brake operation system, including patentable features, with reference to accompanying diagrams. | 16th Nov 1932 | Box 179b \ 1 img166 | |
| Vacuum servo diagram for patent investigation. | 16th Nov 1932 | Box 179b \ 1 img167 | |
| Outlining three design suggestions for a forward-only servo mechanism. | 16th Nov 1932 | Box 179b \ 1 img168 | |
| Alternative method for a hydraulic brake actuating cylinder with automatic adjustment. | 16th Nov 1932 | Box 179b \ 1 img169 | |
| Modifications to the Bensport Radiator to resolve clearance issues with the brake levers. | 16th Nov 1932 | Box 179b \ 1 img170 | |
| Improvements to dampers, flywheel pulleys, and hubs. | 17th Nov 1932 | Box 179b \ 1 img171 | |
| Agreement on the 5.5' X 6' engine dimensions, establishing the Griffon engine with a 30% capacity increase over the Kestrel. | 17th Nov 1932 | Box 179b \ 1 img172 | |
| On the hydraulic operation of brakes, concerning a separate valve for replenishment and thermal relief. | 17th Nov 1932 | Box 179b \ 1 img173 | |
| Moving the suspension and brake levers to prevent them fouling the radiator. | 18th Nov 1932 | Box 179b \ 1 img174 | |
| The search for a new tradesman and equipment requirements for the Coachwork Department in Derby. | 19th Nov 1932 | Box 179b \ 1 img175 | |
| Request for a copy of a document concerning the valve arrangement for J.3. shock dampers. | 19th Nov 1932 | Box 179b \ 1 img176 | |
| Layout and selection of instruments for the first Bensport instrument board. | 19th Nov 1932 | Box 179b \ 1 img177 | |
| Arrangements for the collection and mounting of a Peregrine car body with coachbuilder Park Ward. | 19th Nov 1932 | Box 179b \ 1 img178 | |
| Brake and servo scaling issues and proposed solutions for Peregrine and Bensport models. | 19th Nov 1932 | Box 179b \ 1 img179 | |
| Design decisions for a new servo mechanism, weighing options and detailing improvements over previous models. | 3rd Nov 1922 | Box 179b \ 1 img180 | |
| Aero engine design choices for a new model, including bore/stroke ratios, cylinder construction, and liners. | 19th Nov 1932 | Box 179b \ 1 img181 | |
| Advantages of hard surface liners and comparing different reduction gear types. | 30th Apr 1914 | Box 179b \ 1 img182 | |
| Potential improvements and tests for a vibrator control system. | 19th Nov 1932 | Box 179b \ 1 img183 | |
| Slight modification to the Bensport gearbox hand brake lever fulcrum pin. | 22th Nov 1972 | Box 179b \ 1 img184 | |
| Design of the front floorboards and gearbox tower cover for a 'Benspoilt (B.3)' model. | 22th Nov 1932 | Box 179b \ 1 img185 | |
| Modifications to the floorboard and gearbox layout due to an engine change, referencing specific drawings. | 24th Nov 1932 | Box 179b \ 1 img186 | |
| Dimensions and positioning of the gear and brake levers for a Bensport model with side levers. | 24th Nov 1932 | Box 179b \ 1 img187 | |
| Responding to a request for chassis and body specifications, detailing various drawing numbers and corrections. | 25th Nov 1932 | Box 179b \ 1 img188 | |
| Design changes and specifications for various car components. | 25th Nov 1932 | Box 179b \ 1 img189 | |
| Specification document detailing the components and assembly instructions for the first car of a model. | 25th Nov 1932 | Box 179b \ 1 img190 | |
| Five observations and difficulties regarding a proposed modification to the Peregrine II steering column. | 29th Feb 1932 | Box 179b \ 1 img191 | |
| Modifications to the Bensport gearbox's 2nd motion shaft and layshaft. | 29th Nov 1932 | Box 179b \ 1 img192 | |
| Design change for the Bentsport Gearbox, from brazed to hydraulically pressed levers on actuating shafts. | 29th Nov 1932 | Box 179b \ 1 img193 | |
| Design, features, and potential modifications of a Bensport shoe-type servo. | 30th Nov 1932 | Box 179b \ 1 img194 | |
| Design, adjustments, and modifications for the Bensport gearbox. | 30th Nov 1932 | Box 179b \ 1 img195 | |
| The arrangement of the Bensport brake servo and balancer lever. | 30th Nov 1932 | Box 179b \ 1 img196 | |
| Restriction at the governor release valve and sending a schedule for the revised damper control unit. | 30th Nov 1932 | Box 179b \ 1 img197 | |
| Naming conventions and identity of different sized aero engines. | 30th Nov 1932 | Box 179b \ 1 img198 | |
| Unsuitability of a shoe type servo and proposing a two-plate servo for the Peregrine gearbox. | 30th Nov 1932 | Box 179b \ 1 img199 | |
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