| Description | Date | Identifier | |
| Note discussing the Halford tappet, an aero engine tappet, and the chemical composition of Silchrome. | 1st Jan 1936 | Box 173 \ 4 img187 | |
| Blueprint showing layout and dimensions of a Cadillac V8 engine cylinder, valves, and spark plug. | 1st Jan 1936 | Box 173 \ 4 img188 | |
| Letter on Book-Cadillac Hotel stationery discussing a carburettor flooding issue on steep gradients. | 7th Dec 1935 | Box 173 \ 4 img189 | |
| Six technical observations and issues with engine components, including carburetors and manifolds. | 7th Dec 1935 | Box 173 \ 4 img190 | |
| With a diagram discussing carburettor percolation and automatic chokes. | 7th Dec 1935 | Box 173 \ 4 img191 | |
| Memo discussing water thermostats, carburettor air supply, and testing methodologies. | 7th Dec 1935 | Box 173 \ 4 img192 | |
| Memo, on hotel letterhead, detailing a new futuristic, frameless car design from Briggs and Tjaarda. | 7th Dec 1935 | Box 173 \ 4 img193 | |
| Issues with springs and tappets, including a material specification for Silchrom. | 7th Dec 1935 | Box 173 \ 4 img194 | |
| Hand-drawn sketch on hotel letterhead comparing two designs for cylinder and port/valve layouts with dimensions and engine specifications. | 2nd Jan 1936 | Box 173 \ 4 img195 | |
| 1935 visit to the USA to research automobile engineering, chassis issues, and industry trends. | 2nd Jan 1936 | Box 173 \ 4 img196 | |
| Desired vehicle handling characteristics, comparing to American cars, and future design considerations. | 1st Jan 1935 | Box 173 \ 4 img197 | |
| Comparing chassis stiffness, engine mounting, and noise insulation techniques with American car manufacturers. | 2nd Jan 1934 | Box 173 \ 4 img198 | |
| Technical report on major problems with the Ph.III chassis, specifically tyre noise and gearbox chunking. | 1st Jan 1936 | Box 173 \ 4 img199 | |
| Technical report discussing gearbox grinding, road shock reduction methods, and types of engine mountings. | 2nd Jan 1935 | Box 173 \ 4 img200 | |
| Engine design considerations including noise, induction, percolation, and hot-spots. | 2nd Jan 1935 | Box 173 \ 4 img201 | |
| The volumetric efficiency of American engines, carburettor drains, and rubber slipper wheels. | 2nd Jan 1936 | Box 173 \ 4 img202 | |
| Report discussing road shocks, supercharging methods, and various bearing materials. | 1st Jan 1936 | Box 173 \ 4 img203 | |
| Report page discussing crankshafts, clutches, frame information, and costs in comparison to other manufacturers. | 1st Jan 1935 | Box 173 \ 4 img204 | |
| Answering questions about competitor engine designs and piston development. | 2nd Jan 1935 | Box 173 \ 4 img205 | |
| Need for specific test equipment for motor cars and collaborating with American engineers to improve handling. | 2nd Jan 1936 | Box 173 \ 4 img206 | |
| Cover note forwarding a report regarding axle and gearbox slacks for review. | 3rd Jan 1935 | Box 173 \ 4 img207 | |
| From Detroit detailing observations on axle and gearbox slack causing 'chunking' noise at Buick. | 5th Dec 1935 | Box 173 \ 4 img208 | |
| Analysis of body shims, oil cooler performance, and oil degradation in competitor vehicles. | 3rd Jan 1936 | Box 173 \ 4 img209 | |
| Cover note for a summary report concerning a visit to America. | 3rd Jan 1936 | Box 173 \ 4 img210 | |
| Findings and experiences from a visit to America in 1935, including interactions with General Motors. | 28th Dec 1935 | Box 173 \ 4 img211 | |
| Summary of conclusions regarding vehicle noise issues, specifically tyre noise and transmission chunking, with comparisons to American cars. | 5th Nov 1935 | Box 173 \ 4 img212 | |
| Technical analysis of vehicle gearbox slack, suspension rates, and steering characteristics. | 5th Nov 1935 | Box 173 \ 4 img213 | |
| Technical analysis of American car suspension, steering, and gearbox characteristics. | 5th Nov 1935 | Box 173 \ 4 img214 | |
| Comparative analysis of competitor gearboxes, suspension systems, and engine arrangements. | 5th Nov 1935 | Box 173 \ 4 img215 | |
| Buick's oil cooler design, various types of engine dampers, and frame rigidity. | 5th Nov 1935 | Box 173 \ 4 img216 | |
| Frame stiffness, body construction, crankcase ventilation, cooling systems, and engine bearings. | 5th Nov 1935 | Box 173 \ 4 img217 | |
| Competitor analysis, focusing on Packard crankshafts, rear-engined car designs, and rear axle configurations. | 5th Nov 1935 | Box 173 \ 4 img218 | |
| Fully floating axles, engine slow running, body design modeling, and spring interleaves. | 5th Nov 1935 | Box 173 \ 4 img219 | |
| Concluding page of a document noting unsatisfactory results and the promise of a forthcoming report. | 5th Nov 1935 | Box 173 \ 4 img220 | |
| List of drawings and samples of American automotive parts obtained while in the U.S.A. | 5th Nov 1935 | Box 173 \ 4 img221 | |
| Typed list of various automotive components and materials. | 4th Jan 1936 | Box 173 \ 4 img222 | |
| Issues with whitemetal bearings and proposals for new materials and testing methods. | 4th Jan 1936 | Box 173 \ 4 img223 | |
| Cover letter sending a copy of a report from a visit to the U.S.A. | 6th Jan 1936 | Box 173 \ 4 img224 | |
| Technical memo discussing tyre noise and the methods used by various car manufacturers to reduce it. | 5th Dec 1935 | Box 173 \ 4 img225 | |
| Analysis of drive 'chunking' issues in various cars and a comparison of V12 and V8 engines. | 5th Dec 1935 | Box 173 \ 4 img226 | |
| Crankshaft dampers and balancing methods, comparing different approaches with competitors. | 5th Dec 1935 | Box 173 \ 4 img227 | |
| Analysis of crankshaft deflection, balance weights, and the use of copper-lead bearings with comparisons to competitors. | 5th Dec 1935 | Box 173 \ 4 img228 | |
| Gearbox design, damper characteristics, and an analysis of Packard's gearbox. | 5th Dec 1935 | Box 173 \ 4 img229 | |
| Continuation of notes on the Packard gearbox, with comparisons to Lincoln, and a section on Packard valve springs. | 5th Dec 1935 | Box 173 \ 4 img230 | |
| Body mounting stiffness and noise insulation techniques, referencing Packard and Lincoln Zephyr. | 9th Jan 1936 | Box 173 \ 4 img231 | |
| Cover letter enclosing thank you notes for signature following a visit to the States. | 9th Jan 1936 | Box 173 \ 4 img232 | |
| Letter to E.V. Rippingille of General Motors thanking him for assistance and extending a reciprocal invitation. | 9th Jan 1936 | Box 173 \ 4 img233 | |
| Thank-you letter to W. Chayne of The Buick Motor Company for assistance provided during a visit. | 9th Jan 1936 | Box 173 \ 4 img234 | |
| Letter to the Chief Engineer of Cadillac thanking him for his hospitality towards visiting engineers. | 9th Jan 1936 | Box 173 \ 4 img235 | |
| Confirming the signing and dispatch of three letters. | 10th Jan 1936 | Box 173 \ 4 img236 | |
| Letter to The Brown Alloy Works in Detroit regarding the potential use of their X-Alloy for high expansion cylinder liners and shock damper bushes. | 25th Jan 1936 | Box 173 \ 4 img237 | |
| Letter from Cadillac Motor Car Company discussing research into wheel fight, wobble, and shimmy. | 9th Mar 1936 | Box 173 \ 4 img238 | |
| Analysis of steering and suspension systems, focusing on issues like wheel fight, wobble, and vibration frequencies. | 9th Mar 1936 | Box 173 \ 4 img239 | |
| Query from Maurice Olley regarding wheel fight and wheel hop frequency, referencing an attached sketch. | 9th Mar 1936 | Box 173 \ 4 img240 | |
| Graph analyzing steering wheel movement amplitude versus frequency, with annotations on different suspension types and their effects. | 9th Mar 1936 | Box 173 \ 4 img241 | |
| Letter from Wilcox-Rich Corporation regarding the casting of XALOY for shock damper bushes and cylinder liners. | 9th Oct 1936 | Box 173 \ 4 img242 | |
| Letter to The Wilcox Rich Corporation regarding the supply of parts made from XALOY material. | 21th Oct 1936 | Box 173 \ 4 img243 | |
| Letter from Wilcox-Rich Corporation regarding a request for high expansion austenitic cylinder liners. | 13th Oct 1936 | Box 173 \ 4 img244 | |
| Letter to the Wilcox Rich Corporation declining to use X-Alloy for cylinder liners due to material strength concerns. | 26th Oct 1936 | Box 173 \ 4 img245 | |
| Vickers - King's Cup Race, suggesting communication with Mr. Pierson about fuel, an oil cooler, and a power curve. | 14th Jun 1929 | Box 174 \ 1 img001 | |
| Telegram reporting a radiator leak that has been patched at Bristol. | 28th Jul 1929 | Box 174 \ 1 img002 | |
| Engine trouble and subsequent examination concerning Engine No. F.XI.MS/27 during the King's Cup Race. | 1st Jul 1929 | Box 174 \ 1 img003 | |
| Report from Flying Officer Summers on an engine's satisfactory performance and its planned return to the Works. | 1st Jul 1929 | Box 174 \ 1 img004 | |
| Unfortunate retirement of a Vickers Machine with a new 'F' engine from the King's Cup Race. | 29th Jul 1929 | Box 174 \ 1 img005 | |
| The altitude control setting for Engine No. F.XI.B.27 used in the King's Cup Race. | 9th Jul 1929 | Box 174 \ 1 img006 | |
| The post-race engine test and dismantling, identifying broken reduction gear case bolts. | 12th Jul 1929 | Box 174 \ 1 img007 | |
| Discussion with Mr. Scott-Paine about installing an 'R' engine in a powerboat at the Power Boat Co's works in Hythe. | 21th Nov 1933 | Box 174 \ 1 img008 | |
| Analysis of single versus multi-engined boats, comparing performance and power units with reference to Miss England and Miss Britain. | 22th Nov 1933 | Box 174 \ 1 img009 | |
| Report discussing the installation of an 'R' engine into a boat designed by Mr. Scott-Paine and detailing the characteristics of his current vessel. | 21th Nov 1933 | Box 174 \ 1 img010 | |
| Review of an engine installation, covering controls, cooling, fuel, and starting systems. | 21th Nov 1933 | Box 174 \ 1 img011 | |
| Report page detailing the fitting of a dog clutch to a boat engine and impressions of Mr. Scott-Paine's works. | 21th Nov 1933 | Box 174 \ 1 img012 | |
| From Sg to Hs regarding the use of Air Ministry Schneider engine parts to build a complete engine. | 21th Nov 1933 | Box 174 \ 1 img013 | |
| Status report on the 'R' type engines, detailing their history and current condition. | 21th Nov 1933 | Box 174 \ 1 img014 | |
| Sailing and trip duration details for a visit to the U.S.A. | 11th Feb 1937 | Box 174 \ 2 img001 | |
| Letter from The Zenith Carburetter Co. Ltd to Mr. W. A. Robotham regarding his upcoming trip to America. | 12th Feb 1937 | Box 174 \ 2 img002 | |
| Brief memo regarding travel plans for a U.S.A. visit, mentioning a voyage on the Queen Mary. | 11th Feb 1937 | Box 174 \ 2 img003 | |
| Letter to G.J. Mead of United Aircraft & Transport Corporation regarding travel plans and a potential visit. | 16th Feb 1937 | Box 174 \ 2 img004 | |
| Correspondence from the R.M.S. Queen Mary regarding a voyage and property maintenance. | 21th Feb 1937 | Box 174 \ 2 img005 | |
| Tennis court maintenance and modifying a chassis with Wraith parts. | 23th Feb 1937 | Box 174 \ 2 img006 | |
| Telegram received by telephone form with handwritten message and details. | 23th Feb 1937 | Box 174 \ 2 img007 | |
| Letter detailing US travel plans for company visits, an aeronautics meeting, and updates on personnel and the Phantom III engine. | 23th Feb 1938 | Box 174 \ 2 img008 | |
| Letter from the Experimental Department to Detroit regarding American production methods for splines and a fix for chunking noise. | 27th Feb 1937 | Box 174 \ 2 img009 | |
| 'Floating Kidney' pendulum balance weight, testing Wakefield's lubricant on a Bentley, and a planned visit to Gleasons. | 1st Mar 1937 | Box 174 \ 2 img010 | |
| Telex message regarding noisy spring shackles on a Cadillac, requesting information on threaded shackles. | 3rd Mar 1937 | Box 174 \ 2 img011 | |
| Telex message regarding suspension noise, requesting information on frame damping and American single piston dampers. | 19th Mar 1937 | Box 174 \ 2 img012 | |
| Western Union cablegram requesting instruction books and technical statistics for Bentley and Phantom vehicles. | 3rd Mar 1937 | Box 174 \ 2 img013 | |
| Request to send copies of 'The Times' newspaper to a hotel in Detroit, Michigan. | 4th Mar 1937 | Box 174 \ 2 img014 | |
| Cablegram requesting repeat tests on a Phantom fan ring to increase efficiency and check for cooler blockages. | 4th Mar 1931 | Box 174 \ 2 img015 | |
| Short typed memo regarding the fitting of Parsons Chains to various cars. | 5th Mar 1937 | Box 174 \ 2 img016 | |
| Record of cables received from the USA concerning Bentley and Phantom models. | 5th Mar 1937 | Box 174 \ 2 img017 | |
| Updating on statistical data, fan tests, the Wraith motor-car, a strike, and vehicle logistics. | 5th Mar 1937 | Box 174 \ 2 img018 | |
| Cabled discussion regarding the use of chains on the front wheels of a Phantom III for the American market. | 6th Mar 1937 | Box 174 \ 2 img019 | |
| Memo regarding bearing materials, engine altitude ratings, and diagnosing a misfiring issue. | 6th Mar 1937 | Box 174 \ 2 img020 | |
| Engine tappets and suspension wishbone bearings. | 8th Mar 1937 | Box 174 \ 2 img021 | |
| Cablegram from Detroit requesting a weight analysis of Bentley and Wraith models and discussing crank damper performance. | 8th Mar 1937 | Box 174 \ 2 img022 | |
| Telegram requesting weight analysis and performance figures for Bentley, Wraith, and Phantom models, specifically concerning dampers and springs. | 8th Mar 1937 | Box 174 \ 2 img023 | |
| Telegram received by telephone regarding a fix for sideways shake and roll using a Panhard rod. | 2nd Mar 1933 | Box 174 \ 2 img024 | |
| Cable from America requesting weight analysis and performance figures for various models and providing component feedback. | 8th Mar 1937 | Box 174 \ 2 img025 | |
| Cablegram suggesting a trial of American practice for running in tappets on EP oils to eliminate scuffing on the Phantom model. | 10th Mar 1937 | Box 174 \ 2 img026 | |
| Telegram received by telephone regarding American practice for tappets to eliminate scuffing on the Phantom. | 10th Mar 1937 | Box 174 \ 2 img027 | |
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