| Description | Date | Identifier | |
| Analysis of crankshaft deflection and bearing support, specifically 'unwinding' and 'bell-mouthing' phenomena. | 9th Dec 1927 | Box 6 \ 1 01-page098 | |
| Graph plotting the deflection of a central journal against degrees of twist for a 20 HP crankshaft. | 9th Dec 1927 | Box 6 \ 1 01-page099 | |
| Blueprint graph of crankshaft torsion tests for Phantom & 20 HP models, showing torque vs. shaft twist for various crankshaft conditions. | 7th Dec 1927 | Box 6 \ 1 01-page100 | |
| Torsion test results for a 20 HP crankshaft, from forging to the finished shaft. | 7th Dec 1927 | Box 6 \ 1 01-page101 | |
| Graph showing the results of a torsion test on a 20 HP crankshaft, charting its stiffness through various manufacturing stages from forging to the finished shaft. | 1st Dec 1927 | Box 6 \ 1 01-page102 | |
| Modifications to the 20 HP crankshaft and connecting rod, increasing the crankpin diameter and oval web width. | 1st Dec 1927 | Box 6 \ 1 01-page103 | |
| The modification and stiffness testing of a 20 HP standard crankshaft. | 14th Dec 1927 | Box 6 \ 1 01-page104 | |
| Table comparing the dimensions and specifications of crankshafts for various engine models. | 14th Dec 1927 | Box 6 \ 1 01-page105 | |
| Comparative table of crankshaft details for Lorraine, EAC, Stutz, and 2nd India engines. | 14th Dec 1927 | Box 6 \ 1 01-page106 | |
| Comparison table of connecting rod big end weights and dimensions for various engines. | 11th Jan 1928 | Box 6 \ 1 01-page107 | |
| Design and material issues for 40/50 & 20 HP crankshaft friction dampers. | 11th Jan 1928 | Box 6 \ 1 01-page108 | |
| Request for two extra stiff crankshafts for both the 20 HP and 40/50 models. | 31th Jan 1928 | Box 6 \ 1 01-page109 | |
| Blueprint and testing of a new crankshaft for the 20HP chassis for India. | 2nd Feb 1928 | Box 6 \ 1 01-page110 | |
| Outlining an urgent development program in response to competitors, focusing on performance, simplicity, and component reliability. | 27th Mar 1928 | Box 6 \ 1 01-page111 | |
| Proposed engine improvements and design considerations. | 28th Feb 1928 | Box 6 \ 1 01-page112 | |
| Letter to Major B.G. Carter regarding work on crankshaft torsional vibrations. | 29th Feb 1928 | Box 6 \ 1 01-page113 | |
| Inadequate crankshaft and bearing lubrication and a proposed remedy based on the Phantom 12-KX chassis. | 19th Apr 1928 | Box 6 \ 1 01-page114 | |
| Lubrication system for grooveless bearings and piping in a crankshaft, with reference to tests on R.R.F. engines. | 19th Apr 1928 | Box 6 \ 1 01-page115 | |
| Recommendation for oil supply and pressure modifications for grooveless crankshaft bearings. | 19th Apr 1928 | Box 6 \ 1 01-page116 | |
| Specification table for 20HP Crankshafts, detailing drawing numbers, dimensions, and design notes. | 19th Apr 1928 | Box 6 \ 1 01-page117 | |
| The results of tests for crankshaft torsional vibrations and stiffness. | 19th Apr 1928 | Box 6 \ 1 01-page118 | |
| Torsion tests and stiffness reduction on Standard Phantom, Sports Phantom, and Standard 20 HP shafts. | 19th Apr 1928 | Box 6 \ 1 01-page119 | |
| Report page discussing tests and calculations on crankshaft stiffness, inertia, and torsional periods for various engines. | 19th Apr 1928 | Box 6 \ 1 01-page120 | |
| The concluding page of a typed communication, offering to provide further details upon request. | 3rd Mar 1928 | Box 6 \ 1 01-page121 | |
| Torsion tests on the India 3 crankshaft. | 3rd Mar 1928 | Box 6 \ 1 01-page122 | |
| The observed drop in stiffness for various crankshafts from seven to three main bearings. | 1st Mar 1923 | Box 6 \ 1 01-page123 | |
| Pierce Arrow parts, comparing their bore and crank pin diameter specifications to the 20 HP model. | 1st Mar 1923 | Box 6 \ 1 01-page124 | |
| Introducing an improved oval web crankshaft construction for the 20 HP and 40/50 HP chassis. | 2nd Apr 1928 | Box 6 \ 1 01-page125 | |
| Letter detailing information and test results for crankshaft torsional vibrations on various models. | 23th Apr 1928 | Box 6 \ 1 01-page126 | |
| Technical letter discussing crankshaft stiffness calculations, test results, and engine periods. | 23th Apr 1928 | Box 6 \ 1 01-page127 | |
| Page discussing experimental crankshafts, the F.XI aero engine, and torsional vibrations. | 17th Apr 1928 | Box 6 \ 1 01-page128 | |
| Blueprint for the India 3 crankshaft and bearings, proposing a new lubrication system and other alterations. | 17th Apr 1928 | Box 6 \ 1 01-page129 | |
| Crankchamber modifications using duralumin caps and a new crankshaft lubrication method. | 24th Apr 1928 | Box 6 \ 1 01-page130 | |
| Design for crankshaft lubrication in chassis and aero engines. | 25th Apr 1928 | Box 6 \ 1 01-page131 | |
| Modifications and testing for the lubrication of crankshafts in aero and car engines. | 28th Apr 1928 | Box 6 \ 1 01-page132 | |
| Visit to Cambridge Engineering Laboratory regarding research on crankshaft torsion tests and electrical methods for detecting vibrations. | 1st May 1928 | Box 6 \ 1 01-page133 | |
| Engine vibrations, an alternative gas fuel from a secret cracking process, and upcoming diesel engine experiments for airships. | 3rd May 1926 | Box 6 \ 1 01-page134 | |
| Letter discussing crankshaft dimensions, test results, and a formula for estimating torsional periods in car engines. | 3rd May 1926 | Box 6 \ 1 01-page135 | |
| Page 2 of a letter discussing modifications to Carter's formula for a 4-bearing 6-cylinder engine. | 1st Mar 1929 | Box 6 \ 1 01-page136 | |
| Cover note for a tabulated list of crankshafts. | 1st Mar 1929 | Box 6 \ 1 01-page137 | |
| Table showing examples of calculated critical speeds for various engines. | 29th Jan 1926 | Box 6 \ 1 01-page138 | |
| Comparative table of crankshaft specifications and torsional stiffness values for various engines. | 1st Sep 1927 | Box 6 \ 1 01-page139 | |
| Blueprint with diagrams and formulae for a 6-cylinder, 4-bearing engine crankshaft. | 28th Feb 1920 | Box 6 \ 1 01-page140 | |
| Calculations on crankshaft stiffness, inertia, and frequency related to increasing pin diameter. | 1st Dec 1927 | Box 6 \ 1 01-page141 | |
| Analysis of increasing shaft stiffness and its effect on the critical period. | 11th Jul 1928 | Box 6 \ 1 01-page142 | |
| Modification to the crankshaft oil tubes for F & H engines. | 11th Jul 1928 | Box 6 \ 1 01-page143 | |
| The difficulties experienced with new type crankshaft dampers on 20 HP and 40/50 HP cars. | 19th Jul 1928 | Box 6 \ 1 01-page144 | |
| The design and issues of engine dampers, springs, and stops. | 19th Jul 1928 | Box 6 \ 1 01-page145 | |
| Current slipper wheel and drive system and the future need for a reduced inertia damper. | 1st Aug 1928 | Box 6 \ 1 01-page146 | |
| Order for one dozen friction washers. | 1st Aug 1928 | Box 6 \ 1 01-page147 | |
| Insufficient load from spring drive springs on the 20 HP model and a request for new parts. | 19th Jul 1928 | Box 6 \ 1 01-page148 | |
| Requesting modifications to a 12-G-4 crankshaft damper. | 20th Aug 1928 | Box 6 \ 1 01-page149 | |
| Customer complaints of a knocking sound in 20HP cars and a proposed solution involving a crankshaft changeover. | 3rd Oct 1928 | Box 6 \ 1 01-page150 | |
| Knocking complaint on 20 HP cars, seeking a remedy without changing the crankshaft. | 1st Oct 1928 | Box 6 \ 1 01-page151 | |
| Procedures for resolving a knocking issue on 20-HP cars, clarifying departmental responsibilities. | 4th Oct 1928 | Box 6 \ 1 01-page152 | |
| Improvements to engine dampers and mountings, comparing crankshaft balancing methods, specifically for the 20 HP model. | 17th Nov 1928 | Box 6 \ 1 01-page153 | |
| Changing from fibre friction washers to cotton duck washers on the 20 HP crankshaft damper slipper wheel. | 21th Nov 1928 | Box 6 \ 1 01-page154 | |
| Prints for a new type of spring drive for the India IV model, detailing replacement parts. | 29th Nov 1928 | Box 6 \ 1 01-page155 | |
| Knocking fault on Mrs. Gloag's car (GCK.54), arranging a loan vehicle, and questioning if a crankshaft change would fix it. | 1st Jan 1929 | Box 6 \ 1 01-page156 | |
| The recommended process for the tinning operation on Nitroalloy parts. | 1st Mar 1939 | Box 6 \ 1 01-page157 | |
| Table of part numbers with corresponding numerical data and calculations. | 2nd Aug 1929 | Box 6 \ 1 01-page158 | |
| Specification table for various car crankshafts, detailing their parts, dimensions, and features. | 8th May 1929 | Box 6 \ 1 01-page159 | |
| Performance improvements for the 20 HP car engine. | 15th Apr 1929 | Box 6 \ 1 01-page160 | |
| Calculation comparing vehicle performance improvements based on capacity, weight, and axle ratio. | 15th Apr 1929 | Box 6 \ 1 01-page161 | |
| Comparative specification chart for various 20 HP car crankshafts. | 3rd May 1936 | Box 6 \ 1 01-page162 | |
| Technical table detailing the specifications of various car crankshafts. | 3rd May 1936 | Box 6 \ 1 01-page163 | |
| Secret memo regarding the design of an I-section connecting rod for a 20 HP 'China' Chassis. | 27th May 1929 | Box 6 \ 1 01-page164 | |
| Standardisation of a 20 HP stiffer crankshaft to overcome vibrations and improve design. | 24th Apr 1929 | Box 6 \ 1 01-page165 | |
| Specifying the chassis, test date, and costs for fitting a new part. | 23th Sep 1929 | Box 6 \ 1 01-page166 | |
| Material choices and design for a car engine crankshaft damper, referencing the 30HP, 'Japan' and 'China' models. | 3rd Jun 1929 | Box 6 \ 1 01-page167 | |
| Secret memo discussing the experimental trial of a 20HP auto friction damper flywheel for the 'China' chassis. | 22th Jun 1929 | Box 6 \ 1 01-page168 | |
| Specification table for various 20 HP crankshafts. | 27th Nov 1928 | Box 6 \ 1 01-page169 | |
| Torsion test report for a 20 HP (Goshawk) Crankshaft E.55307. | 4th Oct 1929 | Box 6 \ 1 01-page170 | |
| Proposal to test Nitro Alloy crankshafts in the Phantom II and implement them in the 20 HP model following encouraging results. | 27th Dec 1929 | Box 6 \ 1 01-page171 | |
| Letter regarding a customer's query about the discontinuation of the free-wheel arrangement for the gearbox. | 18th Mar 1912 | Box 6 \ 2 02-page001 | |
| Letter from E. A. Claremont to C. Johnson regarding a 4-cylinder car with a free-wheel gear arrangement. | 22th Mar 1912 | Box 6 \ 2 02-page002 | |
| Letter to Mr. Claremont regarding an offer to test a special change-speed arrangement on his car. | 25th Mar 1912 | Box 6 \ 2 02-page003 | |
| Departmental memo regarding a free-wheel system of changing gear and the proposal for the Technical Committee to report on it. | 25th Mar 1912 | Box 6 \ 2 02-page004 | |
| Instruction to the Gear Box Department to devise a scheme for fitting an experimental freewheel device. | 18th Apr 1912 | Box 6 \ 2 02-page005 | |
| Extract from a note by Mr. Royce regarding the abandonment of the free-wheel gearbox experiment. | 23th Apr 1912 | Box 6 \ 2 02-page006 | |
| Departmental memo regarding a report on the committee's recommendation to design and test a free-wheel gearbox. | 9th May 1912 | Box 6 \ 2 02-page007 | |
| Departmental memo discussing the consideration of a scheme based on Mr. Claremont's experience. | 13th May 1912 | Box 6 \ 2 02-page008 | |
| Departmental memo instructing to halt proceedings on the 'Free Wheel for Gear Box' based on a previous memo from Mr. Royce. | 13th May 1912 | Box 6 \ 2 02-page009 | |
| Departmental memo concerning Mr Royce's opinion on Mr Claremont's free wheel gearbox. | 15th May 1912 | Box 6 \ 2 02-page010 | |
| Seeking confirmation of a letter sent to Mr. Claremont regarding a free-wheel gearbox, with a handwritten reply. | 29th May 1912 | Box 6 \ 2 02-page011 | |
| Letter conveying Mr Royce's opinion to abandon the free-wheel gearbox experiment due to unexplained breakages. | 30th May 1912 | Box 6 \ 2 02-page012 | |
| The testing and operation of the Humphrey Sandburg clutch fitted to a Lea-Francis car. | 15th Jan 1927 | Box 6 \ 2 02-page013 | |
| Humphrey Sandburg clutch, its function as a free-wheel device, and the reasons for its non-adoption. | 17th Jan 1927 | Box 6 \ 2 02-page014 | |
| Letter from Colonel The Master of Sempill to Mr. Hives regarding drawings for a Free Wheel and Gear Box. | 17th Sep 1927 | Box 6 \ 2 02-page015 | |
| Letter from Colonel The Master of Sempill to W. Hives regarding a design for a 20 HP car. | 3rd Oct 1927 | Box 6 \ 2 02-page016 | |
| Letter enclosing particulars of the 20 HP car for the design of applying the Humphery Sandburg Freewheel to a U.1B chassis. | 7th Oct 1927 | Box 6 \ 2 02-page017 | |
| Letter from Colonel The Master of Sempill regarding the design for fitting a Humfrey-Sandberg Free-wheel to a 20 HP car. | 11th Oct 1927 | Box 6 \ 2 02-page018 | |
| Solutions for rapid acceleration and engine improvements regarding the number of cylinders. | 31th Oct 1927 | Box 6 \ 2 02-page019 | |
| Request to borrow a small model of the Humfrey-Sandberg clutch and its technical analysis. | 1st Nov 1927 | Box 6 \ 2 02-page020 | |
| Letter from Humfrey-Sandberg Company Ltd. regarding reports, a pamphlet, and a model of their clutch. | 3rd Nov 1927 | Box 6 \ 2 02-page021 | |
| Letter from Colonel The Master of Sempill regarding the loan of a Humfrey-Sandberg Free-wheel Clutch model for testing. | 3rd Nov 1927 | Box 6 \ 2 02-page022 | |
| Testing of a free wheel clutch on a 12 HP Austin and its potential application on a 20 HP gearbox. | 4th Nov 1927 | Box 6 \ 2 02-page023 | |
| Despatch of a small freewheel to R. at West Wittering for examination. | 1st Nov 1927 | Box 6 \ 2 02-page024 | |
| Letter from Humfrey-Sandberg Company to Mr. Hives regarding an experimental freewheel programme. | 23th Nov 1927 | Box 6 \ 2 02-page025 | |
| Pros and cons of using freewheels on cars. | 1st Dec 1927 | Box 6 \ 2 02-page026 | |
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