| Description | Date | Identifier | |
| Camshaft comparisons for the 'Japan' engine, also referencing the 'China' engine. | 10th Nov 1929 | Box 5a \ 5 05-page232 | |
| Test report detailing B.M.E.P. values at different R.P.M. for a modified camshaft and outlining future tests. | 1st Nov 1929 | Box 5a \ 5 05-page233 | |
| Performance test report comparing a Limousine coupe car 12-G4 and a Hooper cabriolet 14-G4. | 27th Nov 1929 | Box 5a \ 5 05-page234 | |
| Thrust tests of a Goshawk bevel pinion thrust bearing. | 18th Feb 1926 | Box 6 \ 1 01-page001 | |
| Comparative drawing of New Departure and Hoffmann bearings with weight breakdowns. | 19th May 1913 | Box 6 \ 1 01-page002 | |
| Arrangements for a 10,000-mile test run of a 20HP engine with a new oil cleansing system in chassis No.1644. | 22th May 1926 | Box 6 \ 1 01-page003 | |
| The investigation into crankshaft vibrations on the 20 HP engine. | 1st Sep 1926 | Box 6 \ 1 01-page004 | |
| Preliminary experiments investigating engine vibration intensity at various speeds with and without slipper dampers. | 1st Sep 1926 | Box 6 \ 1 01-page005 | |
| Report page detailing engine vibration tests and analysis of torsional oscillations with slipper flywheels. | 1st Sep 1926 | Box 6 \ 1 01-page006 | |
| Belt drive experiments detailing crankshaft vibration analysis at various speeds and configurations. | 1st Sep 1926 | Box 6 \ 1 01-page007 | |
| Analysis of crankshaft torsional vibration and disturbing torque caused by piston inertia. | 1st Sep 1926 | Box 6 \ 1 01-page008 | |
| Experiment to graphically show torsional oscillations using a specially constructed indicator apparatus. | 1st Sep 1926 | Box 6 \ 1 01-page009 | |
| Analysis of crankshaft torsional oscillations and the effect of damping at various engine speeds. | 1st Sep 1926 | Box 6 \ 1 01-page010 | |
| Analysis of diagrams showing torsional vibrations and oscillations at various engine speeds. | 1st Sep 1926 | Box 6 \ 1 01-page011 | |
| Analysis of crankshaft oscillations, vibrations, amplitude and stress at various speeds. | 1st Sep 1926 | Box 6 \ 1 01-page012 | |
| Summary of tests with an indicator for torsional oscillations, including amplitude, frequency, and damper effectiveness at various RPMs. | 1st Sep 1926 | Box 6 \ 1 01-page013 | |
| Torsional deflection and inertia experiments to determine the natural frequency of a crankshaft. | 1st Sep 1926 | Box 6 \ 1 01-page014 | |
| Calculations of inertia and the natural frequency of vibration for a crankshaft and associated parts. | 1st Sep 1926 | Box 6 \ 1 01-page015 | |
| Page of calculations and analysis regarding torsional vibration, natural frequency, and crankshaft inertia. | 1st Sep 1926 | Box 6 \ 1 01-page016 | |
| The influence of a stiffer crankshaft on engine vibration and critical speed. | 1st Sep 1926 | Box 6 \ 1 01-page017 | |
| Summary of experiments on torsional vibrations, critical speeds, and crankshaft taper erosion. | 1st Sep 1926 | Box 6 \ 1 01-page018 | |
| Summary of findings from vibration tests and an outline of future experiments on engine components. | 18th May 1927 | Box 6 \ 1 01-page019 | |
| Inertia turning moment diagram for a 20 HP 6-cylinder engine. | 18th May 1927 | Box 6 \ 1 01-page020 | |
| Blueprint diagram for a torsional vibration indicator. | 21th Jul 1923 | Box 6 \ 1 01-page021 | |
| Graph of torsional deflection curves comparing standard and stiffer 20 HP crankshafts. | 21th Jul 1923 | Box 6 \ 1 01-page022 | |
| Torsional oscillation diagrams for a standard 20 HP crankshaft at various RPMs. | 9th Dec 1912 | Box 6 \ 1 01-page023 | |
| Arrangement of apparatus for crankshaft deflection tests. | 9th Dec 1912 | Box 6 \ 1 01-page024 | |
| Further experiments into crankshaft vibrations on the Phantom and 20 HP engines. | 20th Sep 1926 | Box 6 \ 1 01-page025 | |
| The effects of slipper wheel damping and friction torque on engine vibrations at various speeds. | 20th Sep 1926 | Box 6 \ 1 01-page026 | |
| Analysis of engine vibration, friction torque, and slippage at varying RPMs, with conclusions from preliminary tests on the Phantom model. | 20th Sep 1926 | Box 6 \ 1 01-page027 | |
| Further experiments on engine vibrations and the effects of damping friction on the 20 HP and Phantom models. | 20th Sep 1926 | Box 6 \ 1 01-page028 | |
| Tests investigating engine vibration, specifically the effects of damping friction, piston position, and piston weight on vibration amplitude. | 20th Sep 1926 | Box 6 \ 1 01-page029 | |
| Crankshaft stiffness, vibration testing, and the effects of piston weight. | 7th Apr 1933 | Box 6 \ 1 01-page030 | |
| Torsional vibration diagrams for the Goshawk III crankshaft without damper wheels under various conditions. | 7th Apr 1933 | Box 6 \ 1 01-page031 | |
| Standardisation of chassis parts, specifically main bearings with steel shells. | 24th Sep 1926 | Box 6 \ 1 01-page032 | |
| Internal memo from H.S. to B.J. requesting a signature. | 9th Nov 1926 | Box 6 \ 1 01-page033 | |
| Experiments to reduce torsional vibrations in 20 HP and Phantom engines by using a non-rigidly mounted flywheel. | 9th Nov 1926 | Box 6 \ 1 01-page034 | |
| Continued analysis of crankshaft vibration, friction torque, and damper characteristics. | 9th Nov 1926 | Box 6 \ 1 01-page035 | |
| Crankshaft and torsional vibrations, including experiments with flywheel damping and observations on the Phantom engine. | 9th Nov 1926 | Box 6 \ 1 01-page036 | |
| Analysis of engine crankshaft vibration and internal damping, comparing a Phantom engine to a 20 HP model. | 9th Nov 1926 | Box 6 \ 1 01-page037 | |
| Investigation into viscous-friction and centrifugal dampers to reduce engine vibration and resonance effects. | 9th Nov 1926 | Box 6 \ 1 01-page038 | |
| Conclusion of a report on crankshafts confirming the reliability of the investigation methods. | 9th Nov 1926 | Box 6 \ 1 01-page039 | |
| Blueprint of a 20 HP crankshaft experiment, detailing the friction mounting of the flywheel. | 9th Nov 1926 | Box 6 \ 1 01-page040 | |
| Graph comparing torsional vibration amplitudes of the Goshawk and Phantom engines at critical speed without external damping. | 9th Nov 1926 | Box 6 \ 1 01-page041 | |
| Graph illustrating the reduction in amplitude of torsional vibrations with decreasing friction in the flywheel mounting. | 9th Nov 1926 | Box 6 \ 1 01-page042 | |
| Polar diagrams comparing crankshaft oscillations of the 20-HP and Phantom models at resonance speed. | 9th Nov 1926 | Box 6 \ 1 01-page043 | |
| Comparative data table of stiffness, inertia, and dimensional properties for various engines. | 22th Apr 1927 | Box 6 \ 1 01-page044 | |
| Experiments and conclusions regarding crankshaft torsional vibrations and dampers for the 20 HP engine. | 22th Apr 1927 | Box 6 \ 1 01-page045 | |
| The application and effectiveness of friction dampers and harmonic balancers on engines. | 22th Apr 1927 | Box 6 \ 1 01-page046 | |
| Analysis of crankshaft vibrations and dampers, comparing the standard 20 HP model with the 1-G-1. | 22th Apr 1927 | Box 6 \ 1 01-page047 | |
| Analysis of engine crankshaft vibration, focusing on the relationship between stiffness and inertia of its component parts. | 22th Apr 1927 | Box 6 \ 1 01-page048 | |
| Page from an analysis comparing the inertia and stiffness of engine components for a standard 20 HP and a 1-G-1 model. | 22th Apr 1927 | Box 6 \ 1 01-page049 | |
| Technical analysis of crankshaft inertia and stiffness, including calculations for vibration periods. | 22th Apr 1927 | Box 6 \ 1 01-page050 | |
| Comparison of crankshaft inertia and stiffness between a standard 20 HP engine, a Goshawk engine, and a Lorraine Dietrich engine. | 22th Apr 1927 | Box 6 \ 1 01-page051 | |
| Technical analysis of crankshaft inertia and stiffness, comparing four-bearing and seven-bearing designs with references to Lorraine and Phantom engines. | 22th Apr 1927 | Box 6 \ 1 01-page052 | |
| Analysis of an engine's 'master period' and crankshaft vibration, comparing stiffness and inertia with the Goshawk engine. | 22th Apr 1927 | Box 6 \ 1 01-page053 | |
| Engine crankshaft stiffness, inertia, dampers, and timing gear drives. | 22th Apr 1927 | Box 6 \ 1 01-page054 | |
| Analysis of a 1-G-1 type damper and its effects on the 'master period' and vibrations of the 20 HP engine. | 22th Apr 1927 | Box 6 \ 1 01-page055 | |
| Analysis of harmonic vibrations and their effect on a six-cylinder in-line engine crankshaft. | 22th Apr 1927 | Box 6 \ 1 01-page056 | |
| Calculation of shaft vibration and harmonic speeds based on crankshaft frequency. | 22th Apr 1927 | Box 6 \ 1 01-page057 | |
| Calculation of the periodicity and frequency for a Lorraine Dietrich crankshaft. | 21th Apr 1927 | Box 6 \ 1 01-page058 | |
| Graph showing the amplitude of oscillation and torsional vibrations due to gas pressure torque harmonics at full throttle for a Standard 20 engine. | 21th Apr 1927 | Box 6 \ 1 01-page059 | |
| Big end bearing failure on car 10-G-111, causing a delay for its availability in London. | 1st Jun 1927 | Box 6 \ 1 01-page060 | |
| Fitting and advantages of a 1.G.1. type spring drive and damper on a G.11 engine. | 1st Jul 1927 | Box 6 \ 1 01-page061 | |
| Comparison table and analysis of inertia, weight, and torque for different spring drive systems. | 1st Jul 1927 | Box 6 \ 1 01-page062 | |
| Comparing the G.1. type damper to the standard slipper wheel, noting its effect on engine smoothness and critical speed. | 9th Jul 1927 | Box 6 \ 1 01-page063 | |
| Modifications to the 20 HP crankshaft for testing and improved performance. | 9th Jul 1927 | Box 6 \ 1 01-page064 | |
| Requesting a modified detail drawing for a larger 20 HP crankshaft. | 27th Aug 1927 | Box 6 \ 1 01-page065 | |
| Lightening and simplification of the Phantom engine for sports and racing purposes, alongside other modifications for an experimental chassis. | 29th Aug 1927 | Box 6 \ 1 01-page066 | |
| Instructions for the frame, engine crankshaft, and gears for a 20 HP car intended for trial in France. | 1st Sep 1927 | Box 6 \ 1 01-page067 | |
| Design, materials, and modifications for the 'India 3' crankshaft damper and timing gear spring drive. | 17th Sep 1927 | Box 6 \ 1 01-page068 | |
| The Phantom lightened crankshaft and G.1. type spring drive, with machining instructions. | 24th Sep 1927 | Box 6 \ 1 01-page069 | |
| Requesting a blueprint for an improved 20 HP chassis crankshaft for an upcoming production series. | 17th Oct 1927 | Box 6 \ 1 01-page070 | |
| The testing of the co-efficient of friction for various materials both dry and oily. | 19th Oct 1927 | Box 6 \ 1 01-page071 | |
| Friction tests for various materials and an analysis of viscous friction in a multi-plate spring drive damper. | 22th Oct 1927 | Box 6 \ 1 01-page072 | |
| Modifications made to the India 3 crankshaft. | 22th Oct 1927 | Box 6 \ 1 01-page073 | |
| Request for the acquisition of two types of springs with detailed specifications. | 24th Oct 1927 | Box 6 \ 1 01-page074 | |
| Request for the return of experimental Spring Drive tracings for dimension checking. | 28th Oct 1927 | Box 6 \ 1 01-page075 | |
| Test results comparing crankshaft vibration with a standard versus a new spring drive and damper on a 20 HP engine. | 31th Oct 1927 | Box 6 \ 1 01-page076 | |
| Difficulties with plate splines and the effectiveness of dampers and flywheels in reducing engine vibration. | 22th Apr 1927 | Box 6 \ 1 01-page077 | |
| Dynamometer experiments with a spring drive to resolve spline issues and extend the smooth running range. | 1st Nov 1927 | Box 6 \ 1 01-page078 | |
| Summary of test results on the G.1. type spring drive for the 20 HP engine. | 1st Nov 1927 | Box 6 \ 1 01-page079 | |
| Blueprint of an experimental spring drive for the Goshawk-III. | 1st Nov 1927 | Box 6 \ 1 01-page080 | |
| High-speed engine vibrations observed in 40/50 HP and 20 HP engines near the crankshaft's critical speed. | 1st Nov 1927 | Box 6 \ 1 01-page081 | |
| Racing engine design, focusing on 1500 c.c. engines, crankcase types, and spring drives. | 9th Nov 1927 | Box 6 \ 1 01-page082 | |
| Requesting an order of six sets each of new washers for the 20HP and 40/50HP chassis spring drive. | 9th Nov 1927 | Box 6 \ 1 01-page083 | |
| Request to borrow 20 HP crankshafts from the machining bay for experimental tests. | 21th Nov 1927 | Box 6 \ 1 01-page084 | |
| The replacement of piston pins and testing a new crankshaft design. | 21th Nov 1927 | Box 6 \ 1 01-page085 | |
| Design principles and stiffness of crankshafts. | 23th Nov 1927 | Box 6 \ 1 01-page086 | |
| Decisions on ordering crankshafts and related materials for the 20 HP Chassis 'M' Series. | 23th Nov 1927 | Box 6 \ 1 01-page087 | |
| Notes on the method of comparing calculated and test stiffness in crankshafts using the Air Ministry empirical formula. | 24th Nov 1927 | Box 6 \ 1 01-page088 | |
| Empirical formula and data table for calculating crankshaft stiffness in bearings. | 23th Nov 1927 | Box 6 \ 1 01-page089 | |
| Request for an urgent modification and stiffness test on a 20 HP shaft, impacting all new crankshafts. | 1st Dec 1927 | Box 6 \ 1 01-page090 | |
| Drawing detailing a modification to a standard shaft to reproduce part LEC. 2480. | 1st Dec 1927 | Box 6 \ 1 01-page091 | |
| Experiments determining the reduction in torsional strength of a 20 HP crankshaft during machining operations. | 1st Dec 1927 | Box 6 \ 1 01-page092 | |
| Graph showing the results of a torsion test on a 20 HP crankshaft from forging to finished shaft. | 6th Nov 1919 | Box 6 \ 1 01-page093 | |
| Test report on a 20 HP crankshaft detailing results and suggesting modifications for increased stiffness. | 1st Dec 1927 | Box 6 \ 1 01-page094 | |
| Increasing engine performance and a note on the relative weakness of the 40/50 shaft pins. | 9th Dec 1927 | Box 6 \ 1 01-page095 | |
| Crankshaft torsion test results for a 20 HP shaft, from forging to finished product. | 9th Dec 1927 | Box 6 \ 1 01-page096 | |
| Continued analysis of crankshaft stiffness, comparing calculated and tested values and the reinforcing effect of bearings. | 9th Dec 1927 | Box 6 \ 1 01-page097 | |
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