| Description | Date | Identifier | |
| Extract from a memo regarding Goshawk engine components and chassis gear. | 6th Aug 1920 | Box 77 \ 1 scan0067 | |
| Describing an electrically heated petrol vaporizer from a Franklin car for assisting engine starts in cold climates. | 10th May 1918 | Box 77 \ 1 scan0068 | |
| Instrument for cold-weather starting in vehicles and its potential application for aero engines. | 10th May 1918 | Box 77 \ 1 scan0069 | |
| Diagram showing a cross-section and external view of a mechanical valve component with handwritten annotations. | 27th Sep 1919 | Box 77 \ 1 scan0070 | |
| Instruction regarding the re-positioning of pipes and silencer on the American model chassis. | 27th Sep 1919 | Box 77 \ 1 scan0071 | |
| Letter from the American branch chasing a report on a Bintliff & Laing Electrical Primer Outfit sent for experimental purposes. | 17th Oct 1921 | Box 77 \ 1 scan0072 | |
| Decision to continue manufacturing right-hand drive chassis for America and to stop work on the proposed left-hand drive models. | 31th Oct 1919 | Box 77 \ 1 scan0073 | |
| Test report on a Bintliff & Laing electrical primer outfit, noting its destruction due to a voltage mismatch. | 17th Oct 1921 | Box 77 \ 1 scan0074 | |
| Letter from Rolls-Royce of America requesting the return of a B. & L. Primer supplied on a memorandum invoice. | 22th Dec 1921 | Box 77 \ 1 scan0075 | |
| The return of a B & L Priming Device to R.R. Springfield after testing. | 7th Jan 1922 | Box 77 \ 1 scan0076 | |
| Suggesting sending a 'Master Primer' to Mr. Hives for testing. | 26th Jul 1920 | Box 77 \ 1 scan0077 | |
| Letter from Rolls-Royce of America concerning the dispatch of a Master Primer to the Experimental Department in London. | 27th Oct 1920 | Box 77 \ 1 scan0078 | |
| Cover note attaching a copy of a letter from America, with handwritten instructions for action. | 10th Sep 1920 | Box 77 \ 1 scan0079 | |
| Letter from Rolls-Royce of America regarding sending a sample Master Primer to Derby for testing. | 23th Aug 1920 | Box 77 \ 1 scan0080 | |
| Advertising leaflet for the B. & L. Electric Gas Primer, detailing its benefits, price, and ordering information. | 23th Aug 1920 | Box 77 \ 1 scan0081 | |
| Advertisement for the B. & L. Electric Gas Primer for quick winter engine starting. | 23th Aug 1920 | Box 77 \ 1 scan0082 | |
| Installation and operation instructions for an engine primer and pump system. | 23th Aug 1920 | Box 77 \ 1 scan0083 | |
| Instruction leaflet for the Bintcliff & Laing Electro-Gas Primer, detailing its attachment and use. | 16th Nov 1920 | Box 77 \ 1 scan0084 | |
| Master Primer, forwarding copies of letters from America. | 16th Nov 1920 | Box 77 \ 1 scan0085 | |
| Letter from Rolls-Royce of America concerning the delayed dispatch of a Master Primer sample and its associated blueprint. | 27th Oct 1920 | Box 77 \ 1 scan0086 | |
| Letter from Rolls Royce of America to London regarding a Master Primer for the Experimental Department. | 27th Oct 1920 | Box 77 \ 1 scan0087 | |
| Test report on the Master Primer, detailing its starting procedure and highlighting difficulties with engine warm-up in cold weather. | 12th Jan 1921 | Box 77 \ 1 scan0088 | |
| Experiments with an auxiliary carburettor versus a heated coil primer, concluding with a recommendation against the primer. | 12th Jan 1921 | Box 77 \ 1 scan0089 | |
| Letter from a customer's secretary reporting a broken chassis fitting and twisted tail shaft on a 40/50 HP car. | 15th May 1911 | Box 77 \ 1 scan0090 | |
| Departmental memo regarding a works report on the propeller shaft of Mr. Kenneth M. Clark's car. | 26th May 1911 | Box 77 \ 1 scan0091 | |
| Departmental memo discussing propeller shaft twisting issues on cars driven on the continent. | 31th May 1911 | Box 77 \ 1 scan0092 | |
| Test data for the permanent twist on a 1600 series propeller shaft. | 20th Jun 1911 | Box 77 \ 1 scan0093 | |
| Calculations for torque on the propeller shaft during car braking tests. | 20th Jun 1911 | Box 77 \ 1 scan0094 | |
| Table of calculations for torque on the propeller shaft when stopping the car at various velocities. | 28th Jun 1911 | Box 77 \ 1 scan0095 | |
| Customer complaint about a propeller shaft, and the design philosophy of making it intentionally weak to protect other components. | 28th Jun 1911 | Box 77 \ 1 scan0096 | |
| The examination of a twisted propeller shaft from Mr. Kenneth M. Clarke's car. | 8th Mar 1911 | Box 77 \ 1 scan0097 | |
| The permanent twisting of propeller shafts due to foot brake application and an analysis of their torsional elastic limits. | 3rd Jul 1911 | Box 77 \ 1 scan0098 | |
| Stresses on shafts, worm axle designs, and a comparison with a Daimler axle. | 6th Jul 1911 | Box 77 \ 1 scan0099 | |
| Test report on a large rear axle tube showing slight permanent deflection under a 2-ton load. | 4th Jul 1911 | Box 77 \ 1 scan0100 | |
| Suggesting the propeller shaft tube be strengthened due to repeated instances of twisting. | 4th Jul 1911 | Box 77 \ 1 scan0101 | |
| Test report on a propeller shaft twisting under sudden braking application. | 7th Jul 1911 | Box 77 \ 1 scan0102 | |
| Stress calculations for the propeller shaft under various load and braking conditions. | 11th Jul 1911 | Box 77 \ 1 scan0103 | |
| Brake testing, propeller shaft durability, and the effects of tyre slip on bumpy roads. | 8th Mar 1911 | Box 77 \ 1 scan0104 | |
| Calculations for propeller shaft and footbrake torque requirements. | 8th Mar 1911 | Box 77 \ 1 scan0105 | |
| Experimental Propellor & Torque tube. Intermediate bearing fired in an otherwise standard torque tube. | 14th Dec 1911 | Box 77 \ 1 scan0106 | |
| Notes on the alignment and arrangement of the transmission, torque rod, and gearbox. | 5th Mar 1912 | Box 77 \ 1 scan0107 | |
| The breakage on Ferguson's Car 1825, concluding the cause was reckless driving over an exceptional bump. | 17th May 1912 | Box 77 \ 1 scan0108 | |
| Investigation into a central sphere failure on car 1825, attributing the cause to reckless driving. | 21th May 1912 | Box 77 \ 1 scan0109 | |
| Material testing and a suggestion for using a steel ball with white metal lining to avoid casting defects. | 24th Jun 1912 | Box 77 \ 1 scan0110 | |
| Broken bronze sphere from the torque tube of chassis 18/25, detailing the circumstances of the failure. | 24th Jun 1912 | Box 77 \ 1 scan0111 | |
| Page 2 of a document concerning work on three material test pieces. | 3rd Jul 1912 | Box 77 \ 1 scan0112 | |
| Departmental memo discussing the cause of a broken bronze sphere on chassis 1825. | 3rd Jul 1912 | Box 77 \ 1 scan0113 | |
| Bent and cracked ball end, requesting material for a bumping test. | 22th May 1912 | Box 77 \ 1 scan0114 | |
| Extract from Mr. Ionides' letter suggesting tests to isolate the source of a vibration. | 25th Feb 1914 | Box 77 \ 1 scan0115 | |
| Letter from Mr Ionides with four attached sketches regarding the temporary experimental facing of a torque tube. | 27th Mar 1914 | Box 77 \ 1 scan0116 | |
| Extract discussing weight reduction of the back axle and propeller shaft. | 18th Aug 1916 | Box 77 \ 1 scan0117 | |
| Design specifications for a 20 HP propeller shaft and torque tube, including details on tapering and couplings. | 22th Jul 1919 | Box 77 \ 1 scan0118 | |
| Continued memo requesting a revised design for a 20 HP propeller shaft and torque tube. | 22th Jul 1919 | Box 77 \ 1 scan0119 | |
| Design and material specifications for a torque tube, axle tubes, and driving shaft. | 22th Jul 1919 | Box 77 \ 1 scan0120 | |
| Proposal for a simplified shaft and coupling design using a plain tube with tapered, pinned ends. | 22th Jul 1919 | Box 77 \ 1 scan0121 | |
| Mr. Royce's criticisms and required modifications for the 20 HP propeller shaft and torque tube, scheme 107. | 1st Sep 1919 | Box 77 \ 1 scan0122 | |
| Instructions for the assembly and lubrication of propeller shaft, axle, and bearing components. | 1st Sep 1919 | Box 77 \ 1 scan0123 | |
| Design modifications for oil delivery to a universal joint and torque tube, including a sketch. | 1st Sep 1919 | Box 77 \ 1 scan0124 | |
| Inspection notes and design feedback on 20 HP chassis components, including axles, bearings, and gearbox. | 18th May 1920 | Box 77 \ 1 scan0125 | |
| Installation of a new, larger propeller shaft for the 'Goshawk' model. | 31th Jan 1922 | Box 77 \ 1 scan0126 | |
| Three potential causes for a collapsed propeller shaft within a torque tube on the Goshawk I. | 14th Jan 1921 | Box 77 \ 1 scan0127 | |
| Component design failure and suggestions for improvement. | 14th Jan 1921 | Box 77 \ 1 scan0128 | |
| Specifications for a small R.R. chassis, detailing the three-speed gearbox, back axle, and brakes. | 17th Nov 1920 | Box 77 \ 1 scan0129 | |
| Blueprint for a propeller shaft oil retaining arrangement, suggesting its application in a new small car design. | 22th Nov 1920 | Box 77 \ 1 scan0130 | |
| Outlining proposals for the 'Kite' chassis propeller shaft and universal joints. | 15th Dec 1920 | Box 77 \ 1 scan0131 | |
| Design modifications for various vehicle components, including joints, gearboxes, and axles. | 15th Dec 1920 | Box 77 \ 1 scan0132 | |
| Continued memorandum discussing design modifications for driving pillars, joints, and a propeller shaft. | 15th Dec 1920 | Box 77 \ 1 scan0133 | |
| 'GOS AWK II' universal joint and a new propeller shaft specification. | 22th Jan 1921 | Box 77 \ 1 scan0134 | |
| Modifications and specifications for the 'Goshawk II' propeller shaft and couplings. | 14th Apr 1921 | Box 77 \ 1 scan0135 | |
| Instructing to stop work on the 'Goshawk' II propeller shaft universal coupling due to a new design. | 4th Apr 1921 | Box 77 \ 1 scan0136 | |
| Release of blueprints for the Goshawk 11 Rear Axle Centre Gear Box and instructions for the planet pinion. | 25th Apr 1921 | Box 77 \ 1 scan0137 | |
| Oil leak from the Goshawk II propeller shaft's rear bearing covers, concluding the cause is a vacuum effect. | 7th Sep 1921 | Box 77 \ 1 scan0138 | |
| Proposed modification to the Goshawk 11 propeller shaft and its negative impact on the oiling system. | 7th Sep 1921 | Box 77 \ 1 scan0139 | |
| Clearance issues for the lubricator on the rear propeller shaft joint of a 20-HP car. | 12th Apr 1923 | Box 77 \ 1 scan0140 | |
| Query regarding an issue with oil being flung from the propeller shaft on Goshawk models, staining the carpets. | 30th May 1923 | Box 77 \ 1 scan0141 | |
| Oil leak from the front and rear ends of the propeller shaft on 20 HP cars. | 1st Jun 1923 | Box 77 \ 1 scan0142 | |
| Oil leaks from the propeller shaft on the 20 HP model, which is damaging interior carpets. | 29th May 1923 | Box 77 \ 1 scan0143 | |
| Oil being flung from the Goshawk II propeller shaft's universal joint and a new lubricator. | 1st Jun 1923 | Box 77 \ 1 scan0144 | |
| Extract from the Coachbuilding Sub-Committee minutes regarding a new lubricator design for the 20 HP model. | 2nd Jun 1924 | Box 77 \ 1 scan0145 | |
| Modification to the 20 HP propeller shaft lubricator position causing it to foul the battery box. | 3rd Jun 1924 | Box 77 \ 1 scan0146 | |
| Issue with the 20 HP propeller shaft lubricator fouling the battery box and the urgent need for a solution. | 6th Jun 1924 | Box 77 \ 1 scan0147 | |
| History of proposals and modifications for the lubricator on the rear universal joint. | 20th Jun 1924 | Box 77 \ 1 scan0148 | |
| Ongoing oil leak issue from the propeller and axle joints on the Goshawk 11. | 1st Jul 1924 | Box 77 \ 1 scan0149 | |
| Testing rig for the propeller shaft thrust race on a 40/50 chassis, including a request for blueprints. | 1st Sep 1921 | Box 77 \ 1 scan0150 | |
| Proposals for lightening the propeller shaft and thrust bearing on the Phantom model. | 8th Oct 1927 | Box 77 \ 1 scan0151 | |
| Extract detailing modifications to the oil pump for the American Model. | 27th Sep 1919 | Box 77 \ 1 scan0152 | |
| Policy decision regarding the manufacture of chassis for the American market. | 31th Oct 1919 | Box 77 \ 1 scan0153 | |
| Letter regarding modifications to oil pumps to achieve quieter operation. | 7th Feb 1928 | Box 77 \ 1 scan0154 | |
| Test report on 12 experimental grooved oil pumps, detailing noise levels and remedies when fitted to various chassis. | 1st Feb 1928 | Box 77 \ 1 scan0155 | |
| Letter detailing issues and proposed modifications for an oil pump drive system, referencing specific part numbers. | 25th May 1929 | Box 77 \ 1 scan0156 | |
| Letter from the Chief Engineer of the Chassis Division comparing wormwheel and drive designs between English and American cars. | 27th Aug 1919 | Box 77 \ 1 scan0157 | |
| Revised, simpler design for the 20 HP engine's oil pump drive. | 27th Aug 1919 | Box 77 \ 1 scan0158 | |
| Drawing No. LeC.1132 for the 20 HP oil filter. | 1st Sep 1919 | Box 77 \ 1 scan0159 | |
| Sending schemes for the 20 HP Engine, including crankcase, oil pump drive, and connections. | 12th Sep 1919 | Box 77 \ 1 scan0160 | |
| Listing the parts fitted to a 'Goshawk' engine for testing. | 1st Sep 1920 | Box 77 \ 1 scan0161 | |
| Investigation into the cause of noise on the Goshawk engine oil pump and proposed modifications. | 28th Sep 1920 | Box 77 \ 1 scan0162 | |
| Extract from a memo discussing design specifications for a small chassis. | 17th Nov 1920 | Box 77 \ 1 scan0163 | |
| Drawings for the COSHAWK 11 oil pump, sump, and filter. | 5th Mar 1921 | Box 77 \ 1 scan0164 | |
| Modifications to the 'Goshawk II' oil piping and oil pump relief valve system. | 1st Mar 1921 | Box 77 \ 1 scan0165 | |
| Alteration of the Goshawk 11+ oil pump casing from aluminium to gunmetal. | 22th Sep 1921 | Box 77 \ 1 scan0166 | |
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