| Description | Date | Identifier | |
| Confirming the decision to proceed with dies for die-cast pistons for the Peregrine engine, citing issues with sand castings. | 13th Jan 1933 | Box 2 \ 1 B002_136 137-page08 | |
| Dimensions and modifications for piston scraper rings on Kestrel and Peregrine engines. | 9th Mar 1933 | Box 2 \ 1 B002_136 137-page09 | |
| Limitations of chassis engine pistons and proposing new designs for testing. | 11th May 1933 | Box 2 \ 1 B002_136 137-page10 | |
| Drawing illustrating the development of various piston designs. | 28th Apr 1932 | Box 2 \ 1 B002_136 137-page11 | |
| Single page numbered 37, the rest of the document is blank or the text has faded to become illegible. | 1st Aug 1932 | Box 2 \ 1 B002_136 137-page12 | |
| Shorter propeller tube and chassis alteration for the Peregrine project. | 1st Aug 1932 | Box 2 \ 1 B002_136 137-page13 | |
| Sending a diagram for the Peregrine foot and brake linkage with a supplementary propeller shaft. | 1st Sep 1932 | Box 2 \ 1 B002_136 137-page14 | |
| End thrust tests of hardened and white metal propeller shaft splines for the Peregrine engine. | 24th Oct 1932 | Box 2 \ 1 B002_136 137-page15 | |
| Graph plotting Sliding Effort against Torque for a Peregrine prop-shaft with hardened splines. | 8th Oct 1932 | Box 2 \ 1 B002_136 137-page16 | |
| Results of tests conducted on propeller shaft splines. | 22th Nov 1932 | Box 2 \ 1 B002_136 137-page17 | |
| Graph plotting sliding effort against torque for Peregrine propellor shaft splines. | 18th Nov 1932 | Box 2 \ 1 B002_136 137-page18 | |
| Recommendations for the balancing and assembly of a Peregrine propeller shaft. | 24th Nov 1932 | Box 2 \ 1 B002_136 137-page19 | |
| Blueprint of a rear propeller shaft coupling flange with a correction instruction. | 6th Jan 1933 | Box 2 \ 1 B002_136 137-page20 | |
| Balancing Peregrine propeller shafts and the associated challenges compared to the 20/25 model. | 6th Jan 1933 | Box 2 \ 1 B002_136 137-page21 | |
| The hardening of the toothed coupling for the Peregrine transmission. | 12th Jan 1933 | Box 2 \ 1 B002_136 137-page22 | |
| Material specification error and subsequent correction for the Peregrine transmission coupling. | 13th Jan 1933 | Box 2 \ 1 B002_136 137-page23 | |
| New roller bearing sliding joint design for propeller shafts. | 28th Jan 1933 | Box 2 \ 1 B002_136 137-page24 | |
| Proposal for a new design of the Peregrine propeller shaft's sliding joint to improve stability and lubrication. | 1st Feb 1933 | Box 2 \ 1 B002_136 137-page25 | |
| Table detailing propeller shaft lengths and their safe maximum speeds for various chassis types. | 6th Feb 1933 | Box 2 \ 1 B002_136 137-page26 | |
| Modifications to the Peregrine propeller shaft, focusing on the sliding joint and lubrication. | 11th Feb 1933 | Box 2 \ 1 B002_136 137-page27 | |
| Schemes and modifications for the Peregrine propeller shaft. | 25th Feb 1933 | Box 2 \ 1 B002_136 137-page28 | |
| Issues of whirling, vibration and balancing of the Peregrine transmission shaft. | 27th Mar 1933 | Box 2 \ 1 B002_136 137-page29 | |
| Propeller shaft damper for the Peregrine engine to address transmission rattles. | 10th Apr 1933 | Box 2 \ 1 B002_136 137-page30 | |
| Drawing for a light hydraulic component, reference H.986. | 25th Apr 1933 | Box 2 \ 1 B002_136 137-page31 | |
| Schemes for the Peregrine 2 propeller shaft sliding joint. | 25th Apr 1933 | Box 2 \ 1 B002_136 137-page32 | |
| Outlining proposals for new steering column control designs for both Rolls-Royce and Bentley cars. | 14th Jul 1932 | Box 2 \ 2 B002_X 115 150-page01 | |
| Functionality and ergonomics of steering column controls. | 16th Jul 1932 | Box 2 \ 2 B002_X 115 150-page02 | |
| Controls on the steering column, specifically a mixture control for the Bensport and a foot dimming switch. | 19th Jul 1932 | Box 2 \ 2 B002_X 115 150-page03 | |
| Modifications to controls on the steering column for various car models. | 22th Jul 1932 | Box 2 \ 2 B002_X 115 150-page04 | |
| Issues with the Peregrine controls and proposed modifications for the change speed lever. | 13th Aug 1932 | Box 2 \ 2 B002_X 115 150-page05 | |
| The design and suitability of a new guard ring type steering column control. | 15th Jan 1932 | Box 2 \ 2 B002_X 115 150-page06 | |
| Request to instruct an 8 1/4 inch pendulum lever for Peregrine steering to gain experience with higher gearing. | 8th Aug 1932 | Box 2 \ 2 B002_X 115 150-page07 | |
| Blueprint of higher geared steering parts for a Peregrine II chassis. | 22th Aug 1932 | Box 2 \ 2 B002_X 115 150-page08 | |
| Outlining observations and issues with a request to move the steering column back on the Peregrine II model. | 29th Nov 1932 | Box 2 \ 2 B002_X 115 150-page09 | |
| Potential modifications to a steering box assembly, including the pendulum lever and rocker arm. | 8th Dec 1932 | Box 2 \ 2 B002_X 115 150-page10 | |
| Peregrine cross steering tube nearly knocking off the oil pump. | 8th Dec 1932 | Box 2 \ 2 B002_X 115 150-page11 | |
| Reduced scale steering scheme for the Peregrine, proposing the deletion of the universal mounting. | 13th Dec 1932 | Box 2 \ 2 B002_X 115 150-page12 | |
| Modifications to the Peregrine steering column for a larger carburetter. | 15th Dec 1932 | Box 2 \ 2 B002_X 115 150-page13 | |
| Sketch and clearances for the Peregrine steering system. | 17th Dec 1932 | Box 2 \ 2 B002_X 115 150-page14 | |
| Scaled-down Peregrine steering column design and potential modifications. | 12th Dec 1932 | Box 2 \ 2 B002_X 115 150-page15 | |
| Note confirming discussion points on the Peregrine Steering Column, including control tube diameters, securing nuts, and bolt sizes. | 4th Jan 1933 | Box 2 \ 2 B002_X 115 150-page16 | |
| The material selection for a steering box bracket, questioning the use of aluminium. | 4th Jan 1933 | Box 2 \ 2 B002_X 115 150-page17 | |
| The redesign of ignition, throttle, and mixture controls for the Peregrine project due to an altered steering box position. | 4th Jan 1933 | Box 2 \ 2 B002_X 115 150-page18 | |
| Adjustments to the steering wheel position for the Peregrine model, standardizing on the 'E' type column. | 9th Jan 1933 | Box 2 \ 2 B002_X 115 150-page19 | |
| Modifications to the Peregrine Steering Column. | 9th Jan 1933 | Box 2 \ 2 B002_X 115 150-page20 | |
| Clearance between the Peregrine oil pump and the cross steering tube, and an upcoming modification. | 10th Jan 1933 | Box 2 \ 2 B002_X 115 150-page21 | |
| Steering column positions and suitability for the Peregrine model. | 11th Jan 1933 | Box 2 \ 2 B002_X 115 150-page22 | |
| Modification to the oil pump for the Peregrine model to increase clearance from the cross steering tube. | 11th Jan 1933 | Box 2 \ 2 B002_X 115 150-page23 | |
| Standardisation of steering positions for the Peregrine and 20/25 chassis. | 11th Jan 1933 | Box 2 \ 2 B002_X 115 150-page24 | |
| Compromise on the positioning of a scaled-down steering column in the frame. | 14th Jan 1933 | Box 2 \ 2 B002_X 115 150-page25 | |
| The Peregrine steering column, detailing a schematic and its mounting. | 17th Jan 1933 | Box 2 \ 2 B002_X 115 150-page26 | |
| Proposed re-arrangement of the Peregrine steering controls and support bracket. | 20th Jan 1933 | Box 2 \ 2 B002_X 115 150-page27 | |
| Design modifications for the scaled-down Peregrine steering column. | 29th Dec 1932 | Box 2 \ 2 B002_X 115 150-page28 | |
| The Peregrine and the provision of an improved steering wheel and controls. | 6th Feb 1933 | Box 2 \ 2 B002_X 115 150-page29 | |
| Modification to the Peregrine steering column to prevent interference with the pedal assembly upon adjustment. | 14th Feb 1933 | Box 2 \ 2 B002_X 115 150-page30 | |
| Poor efficiency of a new worm and nut steering system fitted to a Peregrine. | 16th May 1933 | Box 2 \ 2 B002_X 115 150-page31 | |
| Results of tests on a steering column and box, measuring weight, efficiency, and gear ratios. | 12th May 1933 | Box 2 \ 2 B002_X 115 150-page32 | |
| Table of measurements for drop arm load, wheel torque, and efficiency in forward and reverse drive. | 23th May 1933 | Box 2 \ 2 B002_X 115 150-page33 | |
| Appearance of new steering column controls on a Peregrine car. | 23th May 1933 | Box 2 \ 2 B002_X 115 150-page34 | |
| Three modifications to improve the appearance of the Peregrine Control Quadrant. | 24th May 1933 | Box 2 \ 2 B002_X 115 150-page35 | |
| Involute tester profile diagrams for a new sun gear design. | 21th Dec 1944 | Box 2 \ 3 B002_X 116 117 119 120-page01 | |
| Specification table for cutter dimensions and tolerances at various pitch diameters. | 21th Dec 1944 | Box 2 \ 3 B002_X 116 117 119 120-page02 | |
| Blank page with a handwritten page number in the top right corner. | 25th Nov 1932 | Box 2 \ 3 B002_X 116 117 119 120-page03 | |
| The redesign of the Peregrine engine's crankcase bottom half to improve oil cooling. | 25th Nov 1932 | Box 2 \ 3 B002_X 116 117 119 120-page04 | |
| Notice to halt work on a part for the Peregrine engine due to a modification in the bottom half's capacity. | 2nd Dec 1932 | Box 2 \ 3 B002_X 116 117 119 120-page05 | |
| Pressure tests conducted on a crankcase and clutch pit under various conditions and speeds. | 30th Dec 1932 | Box 2 \ 3 B002_X 116 117 119 120-page06 | |
| Data table showing crankcase and clutch pit pressure readings at various speeds without a breather but with a scoop on the clutch pit. | 30th Dec 1932 | Box 2 \ 3 B002_X 116 117 119 120-page07 | |
| Immediate alteration to the Peregrine Distributor Drive to improve oil sealing in the crankcase. | 18th Jan 1933 | Box 2 \ 3 B002_X 116 117 119 120-page08 | |
| Proposed modifications for the Peregrine engine's oil system. | 20th Feb 1933 | Box 2 \ 3 B002_X 116 117 119 120-page09 | |
| Proposed scheme for a manifold in the Peregrine oil base, complete with a diagram. | 23th Feb 1933 | Box 2 \ 3 B002_X 116 117 119 120-page10 | |
| Testing and modifications to the Peregrine engine's oil system. | 3rd Mar 1933 | Box 2 \ 3 B002_X 116 117 119 120-page11 | |
| Blank page with a handwritten page number. | 30th Dec 1931 | Box 2 \ 3 B002_X 116 117 119 120-page12 | |
| Calculations on the Peregrine crankshaft using Carter's formula to determine critical speed. | 30th Dec 1931 | Box 2 \ 3 B002_X 116 117 119 120-page13 | |
| Analysis of crankshaft stiffness comparing Peregrine and Bensport designs. | 27th Apr 1932 | Box 2 \ 3 B002_X 116 117 119 120-page14 | |
| The stiffness and natural frequency of a supercharger drive. | 25th Jun 1932 | Box 2 \ 3 B002_X 116 117 119 120-page15 | |
| Request to build an experimental Fixed Friction Damper Flywheel, design LeC.3134, for a Peregrine Crankshaft. | 25th Jun 1932 | Box 2 \ 3 B002_X 116 117 119 120-page16 | |
| Redesigned Peregrine Crankshaft Damper Flywheel, cancelling a previous drawing and requesting an experimental build. | 8th Jul 1932 | Box 2 \ 3 B002_X 116 117 119 120-page17 | |
| Confirming a blueprint for a 4' stroke crankshaft for a Peregrine engine was provided for recalculation. | 15th Aug 1932 | Box 2 \ 3 B002_X 116 117 119 120-page18 | |
| Request for experimental parts to test a modification to the Peregrine engine crankshaft to overcome flywheel flapping. | 7th Sep 1932 | Box 2 \ 3 B002_X 116 117 119 120-page19 | |
| Modifications to the Peregrine crankshaft thrust collars and the resulting increase in thrust area. | 7th Sep 1932 | Box 2 \ 3 B002_X 116 117 119 120-page20 | |
| Design of the Peregrine engine crankshaft damper, noting the fan pulley attachment. | 1st Nov 1932 | Box 2 \ 3 B002_X 116 117 119 120-page21 | |
| Drawing of a modified crankshaft damper for the Peregrine II engine. | 26th Oct 1939 | Box 2 \ 3 B002_X 116 117 119 120-page22 | |
| Proposal to modify crankshaft lubrication by increasing the number of oil holes in the journals from one to three. | 9th Feb 1933 | Box 2 \ 3 B002_X 116 117 119 120-page23 | |
| Blank page with the page number 119 handwritten in the top right corner. | 2nd Jun 1932 | Box 2 \ 3 B002_X 116 117 119 120-page24 | |
| Modifications to the Peregrine engine and the building of the Bensport car. | 2nd Jun 1932 | Box 2 \ 3 B002_X 116 117 119 120-page25 | |
| Drawings for Peregrine and Japan I cylinder heads fitted with 14 m/m sparking plugs. | 3rd Jun 1932 | Box 2 \ 3 B002_X 116 117 119 120-page26 | |
| Design and specifications of cylinder head nuts for Peregrine & Bensport engines, focusing on stud size and load. | 6th Jun 1932 | Box 2 \ 3 B002_X 116 117 119 120-page27 | |
| Drawing LeC.3115 for a cylinder head, valves, and valve rocker gear for Bensport and Peregrine engines. | 13th Jun 1932 | Box 2 \ 3 B002_X 116 117 119 120-page28 | |
| The Peregrine cylinder head water passages and a blueprint for blocking a hole. | 18th Aug 1932 | Box 2 \ 3 B002_X 116 117 119 120-page29 | |
| Sketch of a left bank Peregrine cylinder head detailing which water holes are to be blanked. | 13th Oct 1938 | Box 2 \ 3 B002_X 116 117 119 120-page30 | |
| Performance of the Peregrine Cylinder Head and proposing improvements based on other designs. | 1st Oct 1932 | Box 2 \ 3 B002_X 116 117 119 120-page31 | |
| Proposed temporary modification to the Peregrine engine's extra cylinder lubrication system. | 4th Oct 1932 | Box 2 \ 3 B002_X 116 117 119 120-page32 | |
| Alterations and specifications for a Peregrine Cylinder Head based on blueprint LeC.3222. | 8th Oct 1932 | Box 2 \ 3 B002_X 116 117 119 120-page33 | |
| Proposal for an experimental bi-metal plate system for the Peregrine oil relief unit. | 11th Nov 1932 | Box 2 \ 3 B002_X 116 117 119 120-page34 | |
| Diagram showing a cross-section of a mechanism with eleven bi-metal plates and assembly instructions. | 15th Dec 1932 | Box 2 \ 3 B002_X 116 117 119 120-page35 | |
| Modifications to the Peregrine Cylinder Head for finishing and economy purposes. | 15th Dec 1932 | Box 2 \ 3 B002_X 116 117 119 120-page36 | |
| Proposal for modifications to crankcase bolting, referencing blueprint LeC.3311 for the Peregrine engine. | 15th Dec 1932 | Box 2 \ 3 B002_X 116 117 119 120-page37 | |
| Proposal to omit extra cylinder lubrication from the Peregrine engine. | 15th Dec 1932 | Box 2 \ 3 B002_X 116 117 119 120-page38 | |
| Warning of modifications to the Peregrine cylinder and crankcase casting patterns. | 22th Dec 1932 | Box 2 \ 3 B002_X 116 117 119 120-page39 | |
| Re-design of the Peregrine engine's Oil Relief Valves. | 23th Dec 1932 | Box 2 \ 3 B002_X 116 117 119 120-page40 | |
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