| Description | Date | Identifier | |
| Continuation page of a letter from The S.U. Carburetter Co. Ltd. | 24th Sep 1937 | Box 149 \ 6 scan0046 | |
| Letter from H.M. Hobson discussing the limitations and proposed modifications for a K-S Electrical Telegage fuel gauge. | 24th Sep 1937 | Box 149 \ 6 scan0047 | |
| Page 2 of a letter from H.M. Hobson Components Ltd. discussing gauges and instruments. | 24th Sep 1937 | Box 149 \ 6 scan0048 | |
| Blueprint showing three views and dimensions for a circular instrument gauge. | 27th Sep 1937 | Box 149 \ 6 scan0049 | |
| Letter from The S.U. Carburetter Co. Ltd. concerning pump and roller testing and design. | 27th Sep 1937 | Box 149 \ 6 scan0050 | |
| Letter from S.U. Carburetter Co. Ltd. clarifying modifications to an armature, spindle, and high-pressure pot. | 30th Sep 1937 | Box 149 \ 6 scan0051 | |
| Letter from The Northern Rubber Co. Ltd. responding to an enquiry about a sample of Neoprene Tubing. | 30th Sep 1937 | Box 149 \ 6 scan0052 | |
| Letter to The S.U. Company Ltd. regarding moisture issues with a pump and arranging a test for a replacement. | 30th Sep 1937 | Box 149 \ 6 scan0053 | |
| Page 2 of a letter regarding protection, endurance testing, and rust prevention for pump components. | 30th Sep 1937 | Box 149 \ 6 scan0054 | |
| Letter to H.M. Hobson Components Ltd. regarding fuel gauge issues, calibrations and a replacement request. | 30th Sep 1937 | Box 149 \ 6 scan0055 | |
| Requesting the dispatch of a petrol gauge to H.M. Hobson Components for the attention of Mr. Hughes. | 1st Oct 1937 | Box 149 \ 6 scan0056 | |
| Letter from S.U. Carburetter Co. Ltd. concerning the examination and testing of two returned pumps. | 4th Oct 1937 | Box 149 \ 6 scan0057 | |
| Letter from H. M. Hobson regarding a K-S Petrol Telegage, a tank for calibration, and an incorrectly returned float. | 5th Oct 1937 | Box 149 \ 6 scan0058 | |
| Request to manufacture one mould in either steel or aluminium for the British Goodrich Company, Burton. | 7th Oct 1937 | Box 149 \ 6 scan0059 | |
| Letter to The S.U. Company Ltd. chasing an advice note for two missing petrol pumps. | 7th Oct 1937 | Box 149 \ 6 scan0060 | |
| Request to make one mould in either steel or aluminium for the British Goodrich Company in Burton. | 7th Oct 1937 | Box 149 \ 6 scan0061 | |
| Official order for a set of petrol pump leather covers that have already been received. | 7th Oct 1937 | Box 149 \ 6 scan0062 | |
| Letter from S. Smith & Sons acknowledging receipt of correspondence concerning a petrol tank. | 8th Oct 1937 | Box 149 \ 6 scan0063 | |
| Official orders for petrol pipe unions and a leather HP petrol pump cover. | 11th Oct 1937 | Box 149 \ 6 scan0064 | |
| Request to make two experimental lamp holders for a petrol pump warning lamp. | 14th Oct 1937 | Box 149 \ 6 scan0065 | |
| Letter to The S.U. Company Ltd. regarding modifications to 30 HP and Bentley pumps, including plating and voltage. | 14th Oct 1937 | Box 149 \ 6 scan0066 | |
| Proposed modification to an arrangement involving a magnet and diaphragms. | 14th Oct 1937 | Box 149 \ 6 scan0067 | |
| Recommending fitting high-pressure petrol pumps to Phantom III cars for the U.S.A. market to prevent vapour lock. | 14th Oct 1937 | Box 149 \ 6 scan0068 | |
| Request to return a Hobson Telegage Tank unit to have a new float fitted. | 15th Oct 1937 | Box 149 \ 6 scan0069 | |
| Letter to H.M. Hobson Components Ltd. regarding a faulty petrol gauge tank unit being returned for repair. | 15th Oct 1937 | Box 149 \ 6 scan0070 | |
| Letter to S. Smith & Sons Ltd. regarding a delayed petrol tank for calibration. | 15th Oct 1937 | Box 149 \ 6 scan0071 | |
| Agreeing to send three sets of high pressure petrol pump parts to the U.S.A. for customer complaints. | 15th Oct 1937 | Box 149 \ 6 scan0072 | |
| Requesting to fit a petrol pump in the frame on a chassis. | 19th Oct 1937 | Box 149 \ 6 scan0073 | |
| Scheme for the petrol pump and piping on the Wraith III chassis. | 19th Oct 1937 | Box 149 \ 6 scan0074 | |
| Letter to The Northern Rubber Company regarding a missing delivery of Neoprene Tubing. | 20th Oct 1937 | Box 149 \ 6 scan0075 | |
| Letter from The S.U. Carburetter Co. Ltd. apologising for a delay in correspondence. | 21th Oct 1937 | Box 149 \ 6 scan0076 | |
| Letter from H.M. Hobson Components regarding an oversight with a cork float and the promise to fit a new one upon receipt of the unit. | 22th Oct 1937 | Box 149 \ 6 scan0077 | |
| Follow-up letter from S. Smith & Sons regarding a complaint about inaccurate instruments. | 22th Oct 1937 | Box 149 \ 6 scan0078 | |
| Letter to The S.U. Company Ltd. regarding pump repairs, replacements, and quality control issues. | 25th Oct 1937 | Box 149 \ 6 scan0079 | |
| Instruction memo listing tracings for the revision of oil fittings and petrol pipes for the Wraith III chassis. | 25th Oct 1937 | Box 149 \ 6 scan0080 | |
| The supply of High Pressure Petrol Pumps to the U.S.A. for Phantom III cars. | 25th Oct 1937 | Box 149 \ 6 scan0081 | |
| Parts supply error and clarifying future dispatch requirements for assemblies and washers. | 26th Oct 1937 | Box 149 \ 6 scan0082 | |
| Request to issue an official order to the Northern Rubber Co. for 12 rubber covers for petrol pumps. | 26th Oct 1937 | Box 149 \ 6 scan0083 | |
| Letter from S.U. Carburetter Co. Ltd. discussing platers, pump terminals, and diaphragm design. | 26th Oct 1937 | Box 149 \ 6 scan0084 | |
| Continuation page of a letter from The S.U. Carburetter Co. Ltd. about a washer and diaphragm assembly. | 27th Oct 1937 | Box 149 \ 6 scan0085 | |
| Letter from S.U. Carburetter Co. Ltd. discussing issues with pumps, enamel, and terminal tags. | 27th Oct 1937 | Box 149 \ 6 scan0086 | |
| Letter from a rubber company regarding a delivery issue with a sample of Neoprene Tubing. | 26th Oct 1937 | Box 149 \ 6 scan0087 | |
| Letter to S. Smith & Sons Ltd. regarding a wrongly fitted meter and the allocation of a new piece number. | 27th Oct 1937 | Box 149 \ 6 scan0088 | |
| Requesting the alteration of a mould according to an attached sketch. | 27th Oct 1937 | Box 149 \ 6 scan0089 | |
| Request to fit a HP pump and necessary pipes to chassis 28.G.VI. | 27th Oct 1937 | Box 149 \ 6 scan0090 | |
| Letter from S. Smith & Sons acknowledging correspondence and confirming the return of a tank and tank unit. | 29th Oct 1937 | Box 149 \ 6 scan0091 | |
| Letter to The S.U. Company Ltd. discussing proposals for modifying the S.U. HP pump. | 30th Oct 1937 | Box 149 \ 6 scan0092 | |
| Letter discussing the endurance testing of pump No. 1312 and issues with the partial plating process for unions. | 30th Oct 1937 | Box 149 \ 6 scan0093 | |
| Request to fit a new high-pressure petrol pump to a Phantom III trials car. | 30th Oct 1937 | Box 149 \ 6 scan0094 | |
| Letter from The S.U. Carburetter Co. Ltd. discussing component modifications and plating. | 1st Nov 1937 | Box 149 \ 6 scan0095 | |
| Request to obtain and machine two magnet pots for a high pressure petrol pump for experimental purposes. | 2nd Nov 1937 | Box 149 \ 6 scan0096 | |
| Letter to The S.U. Company Ltd. discussing modifications to an HP pump for experimental testing. | 3rd Nov 1937 | Box 149 \ 6 scan0097 | |
| Letter discussing alterations to a pump trunnion and requesting drawings for Bentley pump components. | 4th Nov 1937 | Box 149 \ 6 scan0098 | |
| Petrol supply systems and pump technologies observed at the 1937 Motor Show. | 4th Nov 1937 | Box 149 \ 6 scan0099 | |
| Engine models, lubrication systems, carburettors, and suspension components for various vehicles. | 4th Nov 1937 | Box 149 \ 6 scan0100 | |
| Request for a high pressure petrol pump mounting bracket and fittings for the London Trials Car 3.CP.10. | 4th Nov 1937 | Box 149 \ 6 scan0101 | |
| Instruction to the repair department to despatch an HP petrol pump and plate to Cricklewood. | 4th Nov 1937 | Box 149 \ 6 scan0102 | |
| Letter from The S.U. Carburetter Co. Ltd. regarding modifications to a rectangular trunnion and the provision of associated drawings. | 5th Nov 1937 | Box 149 \ 6 scan0103 | |
| Ordering oil pipes and fittings for the Wraith III chassis. | 5th Nov 1937 | Box 149 \ 6 scan0104 | |
| Responding to questions about the use of Discol fuel and its effect on pump diaphragms. | 5th Nov 1937 | Box 149 \ 6 scan0105 | |
| Statement regarding the maintenance of diaphragms and potential leakage issues. | 5th Nov 1937 | Box 149 \ 6 scan0106 | |
| Requesting an order for six sets of petrol piping and fittings for the Wraith III chassis. | 8th Nov 1937 | Box 149 \ 6 scan0107 | |
| Modifications, trials, and rising complaints regarding S.U. petrol pumps. | 9th Nov 1937 | Box 149 \ 6 scan0108 | |
| Experiment to use cork-based glands for 20 HP and 40/50 HP water pumps to address leaking issues. | 4th Jun 1926 | Box 149a \ 1 scan0001 | |
| Standardisation of chassis parts, specifically Jubilee clips for rubber joints. | 18th Nov 1926 | Box 149a \ 1 scan0002 | |
| The standardisation of spherical unions, indicating dissatisfaction with dimensions and proposing revisions. | 24th Dec 1926 | Box 149a \ 1 scan0003 | |
| Urgent memo regarding the lightening of Union Connections for aero work before mass production. | 28th Dec 1926 | Box 149a \ 1 scan0004 | |
| Standardisation proposal for union connections on chassis parts. | 20th Dec 1926 | Box 149a \ 1 scan0005 | |
| Standardisation sheet with remarks on union connections, specifically the need to lighten them for aero work. | 9th May 1927 | Box 149a \ 1 scan0006 | |
| Test results and proposed alterations for water pump glands. | 9th May 1927 | Box 149a \ 1 scan0007 | |
| Diagram and discussion on preventing gland leakage in a pump assembly by coating a bush. | 16th Jan 1928 | Box 149a \ 1 scan0008 | |
| Design improvements for engine components, particularly the water pump gland, rotor, and cylinder block mounting. | 16th Jan 1928 | Box 149a \ 1 scan0009 | |
| Stating a preference for a specific water pump design. | 30th Jan 1928 | Box 149a \ 1 scan0010 | |
| The sending of a drawing for EAC.10 water pump glands. | 8th Mar 1928 | Box 149a \ 1 scan0011 | |
| Design modifications for the EAC.10 water pump gland. | 8th Mar 1928 | Box 149a \ 1 scan0012 | |
| Required modifications for the centralised chassis lubrication system. | 18th May 1928 | Box 149a \ 1 scan0013 | |
| Placement of an Enots oil nipple and the discarding of the Bijur pump. | 9th May 1928 | Box 149a \ 1 scan0014 | |
| Oil leaks from the water pump drive on the 20 HP model. | 9th May 1928 | Box 149a \ 1 scan0015 | |
| Investigation into oil leaks from the water pump drive on the 20 HP engine. | 2nd Jul 1928 | Box 149a \ 1 scan0016 | |
| Design discussion on the water connection elbow pipe for the India 4 chassis, focusing on the depth and shape of bosses. | 20th Dec 1928 | Box 149a \ 1 scan0017 | |
| Technical note proposing a modification to the 'SS' water pump gland nut to prevent it from loosening. | 23th Jan 1929 | Box 149a \ 1 scan0018 | |
| Design and features of a valve in the water circulation system, referencing blueprint LeC.2675. | 20th Feb 1929 | Box 149a \ 1 scan0019 | |
| Difficulties with the 'SS' water circulation drainage system and proposing a solution by altering a water pipe. | 4th Sep 1929 | Box 149a \ 1 scan0020 | |
| The wear and condition of a nitrided alloy water pump spindle following a test run without lubrication. | 15th Nov 1929 | Box 149a \ 1 scan0021 | |
| Request to increase the spring poundage of the 20 HP water pump gland by 30% following a 10,000-mile test. | 4th Apr 1930 | Box 149a \ 1 scan0022 | |
| Proposal for testing and comparing the performance of different water pumps with hot water to investigate flow fall-off at higher temperatures. | 5th Jun 1930 | Box 149a \ 1 scan0023 | |
| Request to commence tests on the effect of water temperature on flow ahead of a visit from R.A.E. | 14th Mar 1931 | Box 149a \ 1 scan0024 | |
| Blueprint Lec. 2885, proposing changes to the Japan 3 engine's water pump, drain plug, and water flow scheme. | 14th Mar 1931 | Box 149a \ 1 scan0025 | |
| Crankcase cover, dynamo, water pump suspension, and pump drive coupling. | 21th Sep 1931 | Box 149a \ 1 scan0026 | |
| Standardisation of chassis parts for a combined water pump end cover and bend. | 8th Oct 1931 | Box 149a \ 1 scan0027 | |
| Standardisation form detailing the fitting of a new part to a chassis. | 21th May 1938 | Box 149a \ 1 scan0028 | |
| Relocation of the water pump bracket .150 nearer to the front of the engine. | 15th Oct 1931 | Box 149a \ 1 scan0029 | |
| Modification to the position of the pump bracket to facilitate demounting the water pump. | 21th Oct 1931 | Box 149a \ 1 scan0030 | |
| Communication regarding a modified water connection between the pump and cylinder block. | 31th Oct 1931 | Box 149a \ 1 scan0031 | |
| Extract regarding the design of the pump connecting and arrangement for J. 3. & Peregrine models. | 10th Nov 1931 | Box 149a \ 1 scan0032 | |
| Modifying a 20/25 water pump, sending a drawing, and disregarding previous remarks on materials. | 12th Jan 1932 | Box 149a \ 1 scan0033 | |
| Modifications required for a new Peregrine II radiator matrix. | 13th Jul 1932 | Box 149a \ 1 scan0034 | |
| Modifying an order for Peregrine II radiators, changing from six sets to three and specifying block types. | 8th Aug 1932 | Box 149a \ 1 scan0035 | |
| Tests of radiator pressure with different overflow pipe configurations. | 30th Dec 1932 | Box 149a \ 1 scan0036 | |
| Reuse of hot Dixstampo forgings for the Peregrine radiator. | 6th Jan 1933 | Box 149a \ 1 scan0037 | |
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