| Description | Date | Identifier | |
| Sending a model of a Bentley dashboard noise insulation scheme. | 8th May 1936 | Box 27a \ 1 Scan433 | |
| The dispatch of new stiffened type headlamp crossmembers for two specific chassis following failures. | 8th May 1936 | Box 27a \ 1 Scan434 | |
| Letter concerning a reamer for shock absorber bushes for Chassis N° B.8.GA, a 4 1/4 Litre Trials Car. | 11th May 1936 | Box 27a \ 1 Scan435 | |
| Reminder letter from 'Sr' to 'Rm' regarding outstanding issues on a 4.1/4 litre Bentley. | 14th May 1936 | Box 27a \ 1 Scan436 | |
| Bentley with excessive rear braking during the Paris Trials, requesting new levers and cams. | 16th May 1936 | Box 27a \ 1 Scan437 | |
| Modifications to a Bentley's braking system for the Paris Trials. | 16th May 1936 | Box 27a \ 1 Scan438 | |
| Letter discussing a fractured bracket and broken wing stay studs on a Bentley chassis. | 16th May 1936 | Box 27a \ 1 Scan439 | |
| Shock damper bush clearances and the trial of a new reamer. | 18th May 1936 | Box 27a \ 1 Scan440 | |
| Recurring failure of crossmembers on several chassis, requesting replacements and advice on procedure. | 19th May 1936 | Box 27a \ 1 Scan441 | |
| Rear axle seizure, detailing the repair involving swapping parts with another vehicle and the subsequent investigation into the cause. | 20th May 1936 | Box 27a \ 1 Scan442 | |
| The findings after dismantling an axle, noting oil leaks, a defective seal, and heat damage. | 20th May 1936 | Box 27a \ 1 Scan443 | |
| Correspondence regarding the dismantling of the rear axle from Chassis B.8.GA, the Paris Trials Car, due to gear failure. | 5th May 1936 | Box 27a \ 1 Scan444 | |
| Engine work and a subsequent road test for oil consumption on Chassis B.I.CW for Mr. Favier. | 20th May 1936 | Box 27a \ 1 Scan445 | |
| Examination and replacement of cracked cross members on Bentley Chassis B.59-DK. | 21th May 1936 | Box 27a \ 1 Scan446 | |
| Letter addressing various mechanical issues and part replacements for a 4 1/4 litre Bentley. | 21th May 1936 | Box 27a \ 1 Scan447 | |
| Despatch of a Borg & Beck Clutch Centre Plate for a Bentley 4¼ litre demonstration car. | 22th May 1936 | Box 27a \ 1 Scan448 | |
| Despatch of a large oil pump for a 4 1/4 litre Bentley demonstration car to Paris. | 22th May 1936 | Box 27a \ 1 Scan449 | |
| Correspondence regarding stiffened type headlamp crossmembers for chassis B.69.DX. | 25th May 1936 | Box 27a \ 1 Scan450 | |
| Faulty rear axle oil seal on Chassis B.8.GA, the Paris Trials Car. | 27th May 1936 | Box 27a \ 1 Scan451 | |
| Adding a baffle and oil thrower to the oil seal to prevent gear seizure. | 27th May 1936 | Box 27a \ 1 Scan452 | |
| Bentley Rear Axle Oil Seal failure and potential causes. | 29th May 1936 | Box 27a \ 1 Scan453 | |
| Investigation into a constant mesh gear failure on chassis B-5-AE, concluding it was a one-off manufacturing error. | 29th May 1936 | Box 27a \ 1 Scan454 | |
| Letter to F.H. Royce discussing the adoption of a new A.C. mechanical fuel pump to replace the Stewart-Warner vacuum feed system. | 11th Oct 1927 | Box 27a \ 2 Scan001 | |
| Letter from Maurice Olley discussing fuel gauge diaphragms and venting requirements. | 11th Oct 1927 | Box 27a \ 2 Scan003 | |
| Completed fuel pump questionnaire for a 40/50 model engine. | 11th Oct 1927 | Box 27a \ 2 Scan004 | |
| Fuel pump questionnaire with handwritten specifications for the 'New Phantom' model. | 28th Feb 1927 | Box 27a \ 2 Scan005 | |
| AC Bulletin detailing test results for the AC Fuel Pressure System. | 28th Feb 1927 | Box 27a \ 2 Scan006 | |
| Graph showing the capacity of an A.C. V.S. fuel pump against pump speed during testing. | 12th Aug 1926 | Box 27a \ 2 Scan007 | |
| Schematic diagram of a pedal-operated fluid pump and distribution system. | 12th Aug 1926 | Box 27a \ 2 Scan008 | |
| From AC Spark Plug Company introducing a new fuel pump and explaining how it works. | 12th Aug 1926 | Box 27a \ 2 Scan009 | |
| Description of a fuel pump's operation, its features, and the faults of alternative fuel systems. | 12th Aug 1926 | Box 27a \ 2 Scan010 | |
| Analysis of the issues with vacuum, mechanical, and electrical fuel systems, concluding with the benefits of the AC Fuel Pump System. | 12th Aug 1926 | Box 27a \ 2 Scan011 | |
| The principles and troubleshooting of the AC fuel pressure system. | 12th Aug 1926 | Box 27a \ 2 Scan012 | |
| From AC Spark Plug Company discussing installation errors and correct procedures for pumps. | 12th Aug 1926 | Box 27a \ 2 Scan013 | |
| Graph of a V.S. Gas Pump Test, plotting capacity against pump speed for different lift heights using kerosene. | 11th Nov 1927 | Box 27a \ 2 Scan014 | |
| Scale drawing of an A-C petrol pump for experimental testing on a car. | 11th Nov 1927 | Box 27a \ 2 Scan015 | |
| Experiment to try out an A-C fuel pump with two different mounting options. | 23th Nov 1927 | Box 27a \ 2 Scan016 | |
| Drawing showing the potential mounting position for an A.C. pump. | 23th Nov 1927 | Box 27a \ 2 Scan017 | |
| Completed Fuel Pump Questionnaire for the 'New Phantom' model. | 18th Jan 1928 | Box 27a \ 2 Scan018 | |
| Letter from AC-SPHINX Sparking Plug Company Ltd regarding a fuel pump test report. | 18th Jan 1928 | Box 27a \ 2 Scan019 | |
| Test report on the A-C petrol pump. | 6th Feb 1928 | Box 27a \ 2 Scan020 | |
| Performance graph showing the delivery rate and test conditions for an A.C. petrol pump. | 17th Feb 1928 | Box 27a \ 2 Scan021 | |
| Page marked by a 'Print Room' stamp. | 17th Feb 1928 | Box 27a \ 2 Scan022 | |
| Reliability of an A.C. petrol pump and suggesting improvements for use on a Phantom model. | 24th Feb 1928 | Box 27a \ 2 Scan023 | |
| Sample A.C. Petrol Pump as a potential replacement for the Autovac system. | 26th Apr 1929 | Box 27a \ 2 Scan024 | |
| Declining the adoption of the A.C. Petrol Pump after testing. | 29th Apr 1929 | Box 27a \ 2 Scan025 | |
| Query regarding the smallest available size of sylphon tubing for a new petrol pump design. | 14th Jun 1930 | Box 27a \ 2 Scan026 | |
| Request for a patent search on the Stromberg down-draught carburetter to validate their patent on using induction pipe vacuum to operate the accelerating petrol pump. | 1st Jul 1930 | Box 27a \ 2 Scan027 | |
| Extract from a report discussing the near completion of a petrol pump for car work. | 8th Jul 1930 | Box 27a \ 2 Scan028 | |
| Technical memo detailing the P.2. Petrol Pump, its interchangeability between R.H. and L.H. chassis, and associated modifications. | 9th Jul 1930 | Box 27a \ 2 Scan029 | |
| Requesting a 25 HP chassis and updating on the design progress for the Phantom II induction, governor gear, and a new petrol pump. | 9th Jul 1930 | Box 27a \ 2 Scan030 | |
| New electrical fuel pump from the S.U. Company and suggesting a sample be requested. | 26th Sep 1930 | Box 27a \ 2 Scan031 | |
| Letter from Amalgamated Carburetters Ltd. introducing their 'AMAL' Fuel Pump. | 14th Oct 1930 | Box 27a \ 2 Scan032 | |
| Letter to Amalgamated Carburetters Ltd. regarding a missing leaflet for an 'AMAL' Fuel Pump. | 16th Oct 1930 | Box 27a \ 2 Scan033 | |
| Letter from Amalgamated Carburetters Ltd. regarding an omitted leaflet. | 17th Oct 1930 | Box 27a \ 2 Scan034 | |
| Advertisement leaflet for the AMAL Fuel Pump. | 12th Jan 1931 | Box 27a \ 2 Scan035 | |
| Letter from Amalgamated Carburetters Ltd. regarding a fuel specification error and the calibration of a Mark IX Flowmeter. | 12th Jan 1931 | Box 27a \ 2 Scan036 | |
| Instructing the fitting of a S.U. Co's Kent Petrol pump to vehicle 24-EX. | 26th Jan 1931 | Box 27a \ 2 Scan037 | |
| From ROY to Hs. regarding two S.U. Petrolifts sent for inspection, one being a sectioned model to demonstrate the spark on the points. | 7th Feb 1931 | Box 27a \ 2 Scan038 | |
| Redesign of a petrol pump from sylphon tubes to a fabric diaphragm to reduce cost. | 4th May 1931 | Box 27a \ 2 Scan039 | |
| Development and advantages of the A.C. fabric type petrol pump. | 5th May 1931 | Box 27a \ 2 Scan040 | |
| New petrol pump, detailing its advantages over the A.C. model and its suitability for the 25HP engine. | 7th May 1931 | Box 27a \ 2 Scan041 | |
| Covering letter for a letter and blueprint from A.C. Sphinx Sparking Plug Co. Ltd. regarding A.C. petrol pumps. | 11th May 1931 | Box 27a \ 2 Scan042 | |
| Letter from AC-Sphinx Sparking Plug Co Ltd. regarding the supply and testing of sample petrol pumps. | 8th May 1931 | Box 27a \ 2 Scan043 | |
| Page 2 of a letter from The AC Sphinx Sparking Plug Co. Ltd. regarding a potential deficiency in layout PE-276. | 8th May 1931 | Box 27a \ 2 Scan044 | |
| Fuel pump delivery curve graph for three different fuel pumps, plotting gallons per hour against camshaft speed. | 8th May 1931 | Box 27a \ 2 Scan045 | |
| Modifications to A.C. standard petrol pumps and a new design for the Phantom engine. | 22th May 1931 | Box 27a \ 2 Scan046 | |
| Request for a reply regarding an AC Petrol Pump, referencing previous correspondence and a blueprint. | 27th May 1931 | Box 27a \ 2 Scan047 | |
| Forwarding a note from Hancock detailing a petrol boiling issue with the A.C. Petrol Pump during testing in France. | 4th Jul 1931 | Box 27a \ 2 Scan048 | |
| Letter from AC-Sphinx Sparking Plug Co. Ltd. discussing vapour lock issues and recommendations for re-routing petrol piping. | 12th Aug 1931 | Box 27a \ 2 Scan049 | |
| Continuation letter discussing potential solutions for vapour lock issues in fuel systems. | 12th Aug 1931 | Box 27a \ 2 Scan050 | |
| Suggestion to trial a piston-type fuel pump, which eliminates fabric diaphragms, based on a letter from Messrs Amal Ltd. | 10th Oct 1931 | Box 27a \ 2 Scan051 | |
| Performance of an A.C. petrol pump and suggesting an R.R. pump for slow-speed issues. | 2nd Oct 1931 | Box 27a \ 2 Scan052 | |
| Issues and solutions for the A.C. petrol pump fitted to a 25-EX model. | 29th Oct 1931 | Box 27a \ 2 Scan053 | |
| Modifications and performance testing of a petrol pump, comparing reservoir types and spring loads. | 29th Oct 1931 | Box 27a \ 2 Scan054 | |
| Performance graphs for a petrol pump, comparing results with and without different capacity air bottles and reservoirs. | 19th Oct 1931 | Box 27a \ 2 Scan055 | |
| Technical explanation of the AMAL Piston fuel pump. | 4th Nov 1931 | Box 27a \ 2 Scan056 | |
| New Piston type of Pump from carburettor manufacturer, Amal Limited. | 4th Nov 1931 | Box 27a \ 2 Scan057 | |
| Line drawing of a direct acting piston petrol pump. | 19th Oct 1931 | Box 27a \ 2 Scan058 | |
| General arrangement diagram of a piston-type petrol pump, detail no. 59/101. | 4th Sep 1931 | Box 27a \ 2 Scan059 | |
| Use of electrical petrol pumps versus mechanical ones, citing fire risk and reliability concerns. | 9th Nov 1931 | Box 27a \ 2 Scan060 | |
| Modifications and testing of electrical petrol pumps as an alternative to the autovac system. | 12th Nov 1931 | Box 27a \ 2 Scan061 | |
| Sample of an AMAL petrol pump and comparing its cost to an Autovac. | 20th Nov 1931 | Box 27a \ 2 Scan062 | |
| Test results for a 25EX A.C. Petrol Pump comparing performance with the filter cavity filled in versus normal operation. | 2nd May 1932 | Box 27a \ 2 Scan063 | |
| Graph showing the delivery rate of an A.C. petrol pump in pints per hour versus engine RPM under specific test conditions. | 2nd May 1932 | Box 27a \ 2 Scan064 | |
| Page stamped by the Print Room in Derby. | 26th May 1932 | Box 27a \ 2 Scan065 | |
| Laboratory report on the material analysis of an A.C. Petrol Pump. | 9th Jun 1932 | Box 27a \ 2 Scan066 | |
| Requesting the casting of petrol pump heads in a specific alloy for testing, following analysis of A.C. pump material. | 3rd Jun 1932 | Box 27a \ 2 Scan067 | |
| The testing of an 'Amal' petrol pump with a piston design. | 14th Jun 1932 | Box 27a \ 2 Scan068 | |
| Test report on an 'AMAL' metal piston type petrol pump, detailing performance issues and results. | 14th Jun 1932 | Box 27a \ 2 Scan069 | |
| Test report on the performance of a spring-operated pump at varying speeds. | 14th Jun 1932 | Box 27a \ 2 Scan070 | |
| Two cross-sectional diagrams of a mechanical component, likely a carburettor or fuel pump. | 6th Jun 1932 | Box 27a \ 2 Scan071 | |
| Performance graph for an 'Amal' metal piston type petrol pump, plotting delivery rate against pump speed under various conditions. | 6th Jun 1932 | Box 27a \ 2 Scan072 | |
| Reverse side of a document with a purple ink stamp from the Print Room in Derby. | 9th Jun 1932 | Box 27a \ 2 Scan073 | |
| The 'Amal' double fabrix type petrol pump. | 30th Jun 1932 | Box 27a \ 2 Scan074 | |
| The design and performance of the 'AMAL' double fabric type petrol pump. | 14th Jun 1932 | Box 27a \ 2 Scan075 | |
| Performance comparison of RR and AMAL fabric pumps against an AMAL metal piston type. | 14th Jun 1932 | Box 27a \ 2 Scan076 | |
| Performance comparison graph of petrol pumps, plotting delivery rate against pump speed. | 14th Jun 1932 | Box 27a \ 2 Scan077 | |
| Stamped page from the Print Room in Derby. | 1st Jul 1932 | Box 27a \ 2 Scan078 | |
| Blueprint diagram of an 'Amal' double fabric type petrol pump. | 15th Jun 1932 | Box 27a \ 2 Scan079 | |
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