| Description | Date | Identifier | |
| Table of altitude data showing barometric pressure and temperature at various heights. | 8th Aug 1935 | Box 149 \ 1 scan0171 | |
| Data table showing barometric pressure and temperature measurements at various altitudes from 8000 to 10000 feet. | 8th Aug 1935 | Box 149 \ 1 scan0172 | |
| Letter to The S.U. Co. Ltd. requesting the supply of three large capacity petrol pumps and clarifying bolt requirements. | 13th Aug 1935 | Box 149 \ 1 scan0173 | |
| Requesting the creation of a test cylinder to reproduce altitude conditions for the Bentley petrol system to solve vapour lock issues. | 17th Aug 1935 | Box 149 \ 1 scan0174 | |
| Confirming the Durometer hardness for the Spectre Fuel Pump Mounting Ex.18062. | 17th Aug 1935 | Box 149 \ 1 scan0175 | |
| Standardisation of non-inductively wound coils for petrol pumps. | 26th Jun 1935 | Box 149 \ 1 scan0176 | |
| Schemes for relocating the Bentley petrol pump and filter, referencing associated design drawings. | 10th Sep 1935 | Box 149 \ 1 scan0177 | |
| Questioning the use of electric petrol pumps over gear-driven pumps. | 13th Sep 1935 | Box 149 \ 1 scan0178 | |
| Internal request to order a complete fuel pump with specific components for a Bentley vehicle. | 19th Sep 1935 | Box 149 \ 1 scan0179 | |
| Reliability issues of gear-driven versus electric petrol pumps and proposing a new location for the electric pump. | 28th Sep 1935 | Box 149 \ 1 scan0180 | |
| Letter from The S.U. Company regarding a blueprint for part No.1405.E and the despatch of a pump. | 8th Oct 1935 | Box 149 \ 1 scan0181 | |
| Requesting an official order to the S.U. Co. for twelve Zinc Fuel Pump Diaphragms for use on Experimental Cars. | 22th Oct 1935 | Box 149 \ 1 scan0182 | |
| Letter to The S.U. Company Ltd. regarding an order and modification requirements for Large Capacity Fuel Pumps. | 23th Oct 1935 | Box 149 \ 1 scan0183 | |
| Urgent internal order request for three large capacity fuel pumps for Phantom III chassis. | 23th Oct 1935 | Box 149 \ 1 scan0184 | |
| Letter confirming the specifications for an order of fuel pumps, detailing material changes and markings for different batches. | 24th Oct 1935 | Box 149 \ 1 scan0185 | |
| Letter confirming the dispatch of carburetter gland washers to G.W. Hancock in France. | 24th Oct 1935 | Box 149 \ 1 scan0186 | |
| Modifications to S.U. Fuel Pumps for Bentley 'G' series vehicles. | 25th Oct 1935 | Box 149 \ 1 scan0187 | |
| Letter to The S.U. Company regarding petrol pump trouble on a Phantom III car being tested in France. | 26th Oct 1935 | Box 149 \ 1 scan0188 | |
| The second page of a letter requesting comments on a trouble. | 26th Oct 1935 | Box 149 \ 1 scan0189 | |
| Letter from The S.U. Company regarding pump diaphragm trouble caused by moisture absorption and fuel type. | 28th Oct 1935 | Box 149 \ 1 scan0190 | |
| Continuation of a letter from The S.U. Company regarding the standardisation of a material. | 29th Oct 1935 | Box 149 \ 1 scan0191 | |
| Letter to The S.U. Company Ltd. regarding seized steel skirted pistons and testing delays. | 29th Oct 1935 | Box 149 \ 1 scan0192 | |
| Relocating the petrol pumps and filter on a Bentley large bore engine due to hot weather issues. | 1st Nov 1935 | Box 149 \ 1 scan0193 | |
| Letter to The S.U. Company regarding an experimental order for pump components and their supply. | 2nd Nov 1935 | Box 149 \ 1 scan0194 | |
| Test report on the quietness of operation for five Bentley fuel pumps. | 5th Nov 1935 | Box 149 \ 1 scan0195 | |
| Letter from The S.U. Company confirming a delay in delivering three large capacity pumps due to awaiting parts from Rolls-Royce. | 6th Nov 1935 | Box 149 \ 1 scan0196 | |
| Letter from The S.U. Company confirming the dispatch of 2 - 4 lb Springs. | 6th Nov 1935 | Box 149 \ 1 scan0197 | |
| Letter to The S.U. Co. Ltd. regarding the construction of pumps, sourcing of castings, and a related order. | 7th Nov 1935 | Box 149 \ 1 scan0198 | |
| The procedure for returning faulty petrol pumps. | 7th Nov 1935 | Box 149 \ 1 scan0199 | |
| Request to issue an official order for three S.U. Co. fuel pumps for tests on the large bore Bentley. | 7th Nov 1935 | Box 149 \ 1 scan0200 | |
| Repair procedures and standards for S.U. Petrol Pumps. | 7th Nov 1935 | Box 149 \ 1 scan0201 | |
| Damaged pumps being returned to S.U's and the need for an accompanying Depot Sheet. | 7th Nov 1935 | Box 149 \ 1 scan0202 | |
| Letter to S.U. Company Ltd. regarding the supply of Bakelite distance pieces for fuel pump testing. | 12th Nov 1935 | Box 149 \ 1 scan0203 | |
| Changes to the 25-29 Petrol System arrangement. | 18th Nov 1935 | Box 149 \ 1 scan0204 | |
| Report from The S.U. Company regarding faults found on a batch of twelve pumps. | 19th Nov 1935 | Box 149 \ 1 scan0205 | |
| Continuation sheet from S.U. Company listing details and complaint status for various pumps by chassis number. | 19th Nov 1935 | Box 149 \ 1 scan0206 | |
| Letter from The S.U. Company regarding consignments of modified and corrected pumps. | 26th Nov 1935 | Box 149 \ 1 scan0207 | |
| Letter from The S.U. Company regarding a suggestion for pump mounting to reduce noise. | 26th Nov 1935 | Box 149 \ 1 scan0208 | |
| Blueprint showing a component mounted to a dashboard with a rubber isolating layer. | 29th Nov 1935 | Box 149 \ 1 scan0209 | |
| Letter to C.T. Skinner of The S.U. Co. Ltd. discussing a suggested pump mounting for the Bentley chassis. | 29th Nov 1935 | Box 149 \ 1 scan0210 | |
| Petrol pump noise and the use of rubber mountings for the Bentley Petrol Pump. | 3rd Dec 1935 | Box 149 \ 1 scan0211 | |
| Suggestion for a rubber mounting for the Bentley petrol pump on the dashboard to reduce noise. | 3rd Dec 1935 | Box 149 \ 1 scan0212 | |
| Dispatch of a replacement S.U. Petrol Pump to Lillie Hall. | 7th Dec 1935 | Box 149 \ 1 scan0213 | |
| Rubber mounting for a Bentley petrol pump to reduce noise. | 11th Dec 1935 | Box 149 \ 1 scan0214 | |
| To Roy requesting modifications to a Ph.III type Fuel Pump being returned to the S.U. Co. | 12th Dec 1935 | Box 149 \ 1 scan0215 | |
| Despatch of a Ph.III type petrol pump to S.U. Co. for modifications. | 12th Dec 1935 | Box 149 \ 1 scan0216 | |
| Letter to The S.U. Company Ltd. confirming points regarding petrol pumps and carburetter modifications. | 13th Dec 1935 | Box 149 \ 1 scan0217 | |
| New rubber mounting for the petrol pump on the 25/30 HP and Phantom III chassis. | 31th Dec 1935 | Box 149 \ 1 scan0218 | |
| Revised mounting scheme for a Bentley rubber-mounted petrol pump, cancelling a previous design. | 2nd Jan 1936 | Box 149 \ 1 scan0219 | |
| Letter to S.U. Co. Ltd. regarding the modification of carburetter spindles and a petrol pump. | 2nd Jan 1935 | Box 149 \ 1 scan0220 | |
| Request to issue an official order to the S.U. Co. to modify a PhIII type petrol pump. | 2nd Jan 1936 | Box 149 \ 1 scan0221 | |
| Handover of a large capacity pump to the S.U. Company for modifications. | 2nd Jan 1936 | Box 149 \ 1 scan0222 | |
| Servicing S.U. petrol pumps abroad, focusing on the difficulty of replacing shrunken diaphragms. | 7th Jan 1936 | Box 149 \ 1 scan0223 | |
| The issues with zinc diaphragms in S.U. Petrol Pumps when exposed to alcohol-based fuels. | 13th Jan 1936 | Box 149 \ 1 scan0224 | |
| Instruction memo regarding the fitting of a rubber-mounted petrol pump on a Bentley. | 16th Jan 1936 | Box 149 \ 1 scan0225 | |
| Official order for diaphragms from The SU. Co. | 10th Feb 1936 | Box 149 \ 1 scan0226 | |
| Instruction to fit and replace rubber mountings for the petrol pump on 25/30 HP and Phantom III chassis. | 4th Mar 1936 | Box 149 \ 1 scan0227 | |
| Request to issue standardisation sheets for a rubber mounted petrol pump for the 25/30 and Phantom III models. | 10th Mar 1936 | Box 149 \ 1 scan0228 | |
| Request to order four rubber blocks from British Tyre and Rubber Co. Ltd. for a petrol pump mounting. | 13th Mar 1936 | Box 149 \ 1 scan0229 | |
| Modifications to the Phantom III Stromberg carburetter and S.U. petrol pumps to resolve fuel starvation issues at high speeds. | 8th Apr 1936 | Box 149 \ 1 scan0230 | |
| The performance testing of petrol pumps, detailing maximum pressure, flow delivery and the effects of diaphragm springs. | 8th Apr 1936 | Box 149 \ 1 scan0231 | |
| Letter to the S.U. Company regarding petrol pump starvation issues and performance on the Phantom III. | 16th Apr 1936 | Box 149 \ 1 scan0232 | |
| Letter discussing variations in maximum pressure for a batch of standard petrol pumps. | 16th Apr 1936 | Box 149 \ 1 scan0233 | |
| Petrol system failures due to air ingress on 4¼ litre Bentley and 25/30 HP chassis, with proposed design solutions. | 23th May 1936 | Box 149 \ 1 scan0234 | |
| Petrol system failures, suggesting the cause is a leak on the suction side of the petrol pump and requesting more information. | 25th May 1936 | Box 149 \ 1 scan0235 | |
| The design and implementation of an extension bracket for the 25/30 HP petrol pump. | 28th May 1936 | Box 149 \ 1 scan0236 | |
| Instruction to fit a new scheme petrol pump bracket for additional bonnet clearance on a 25/30 HP car. | 4th Jun 1936 | Box 149 \ 1 scan0237 | |
| Petrol pump self-priming tests following system failures. | 10th Jun 1936 | Box 149 \ 1 scan0238 | |
| Query regarding noise from petrol pumps on model 22-G-V and if the mounting is up to the latest standard. | 12th Jun 1936 | Box 149 \ 1 scan0239 | |
| Letter to the S.U. Company regarding fuel pump positioning to combat vaporisation issues. | 26th Jun 1936 | Box 149 \ 1 scan0240 | |
| Letter inquiring about the supply of pumps to be fitted on the cowl part of a chassis frame. | 26th Jun 1936 | Box 149 \ 1 scan0241 | |
| Petrol flow test results for a cold system. | 27th Jun 1936 | Box 149 \ 1 scan0242 | |
| Letter from The S.U. Company regarding a failed, non-standard pump on a Bentley vehicle. | 27th Jun 1936 | Box 149 \ 1 scan0243 | |
| Returned petrol pump from Mr. Withers' car and requesting a credit be issued to the S.U. Company. | 29th Jun 1936 | Box 149 \ 1 scan0244 | |
| Requesting an investigation into why an obsolete pump was fitted to a new car. | 29th Jun 1936 | Box 149 \ 1 scan0245 | |
| Petrol flow comparison between S.U. and Autoflux pumps for the Phantom III. | 30th Jun 1936 | Box 149 \ 1 scan0246 | |
| Letter from The S.U. Company concerning blueprints for a suggested pump body and a larger air bottle. | 1st Jul 1936 | Box 149 \ 1 scan0247 | |
| Letter from The S.U. Company regarding an experimental pump, marked 'EX.1', sent for testing. | 9th Jul 1936 | Box 149 \ 1 scan0248 | |
| Continuation letter from The S.U. Company regarding pump voltage testing and parts manufacturing. | 10th Jul 1936 | Box 149 \ 1 scan0249 | |
| Letter to the S.U. Company Ltd. regarding a suggested arrangement drawing for a petrol pump and a design preference for air bottles. | 10th Jul 1936 | Box 149 \ 1 scan0250 | |
| Obsolete S.U. petrol pump fitted to a customer's car and a warning to depots. | 10th Jul 1936 | Box 149 \ 1 scan0251 | |
| Obsolete S.U. petrol pump on a Bentley B-172-EF. | 10th Jul 1936 | Box 149 \ 1 scan0252 | |
| Letter to S.U. Company Ltd. regarding a suggestion for silencing petrol pumps. | 13th Jul 1936 | Box 149 \ 1 scan0253 | |
| Simple modification to cure noisy petrol pumps. | 11th Jul 1936 | Box 149 \ 1 scan0254 | |
| Blueprint diagram showing a fault where a loose diaphragm causes a petrol leak from a drain hole. | 11th Jul 1936 | Box 149 \ 1 scan0255 | |
| Blueprint illustrating a modification to a pump to cure noise issues. | 15th Apr 1936 | Box 149 \ 1 scan0256 | |
| Standardisation of parts document for a rubber mounting for a petrol pump. | 15th Apr 1936 | Box 149 \ 1 scan0257 | |
| Cost analysis of tools for Standardisation Sheet No.1263 for the 25/30-HP model. | 6th Apr 1936 | Box 149 \ 1 scan0258 | |
| Standardisation of a rubber mounting for a petrol pump. | 15th Apr 1936 | Box 149 \ 1 scan0259 | |
| Cost estimate for extra jigs, tools, and equipment, including a comparison of old versus new parts costs. | 3rd Apr 1936 | Box 149 \ 1 scan0260 | |
| Policy for replacing and servicing S.U. petrol pumps. | 16th Jul 1936 | Box 149 \ 1 scan0261 | |
| Replacement policies for S.U. Petrol Pumps, particularly regarding the use of obsolete diaphragms. | 28th Jul 1936 | Box 149 \ 1 scan0262 | |
| Letter to S.U. Carburetter Co. Ltd. detailing test results for pump EX1. | 28th Jul 1936 | Box 149 \ 1 scan0263 | |
| Pump's performance test, detailing delivery rates at various voltages. | 28th Jul 1936 | Box 149 \ 1 scan0264 | |
| Letter from The S.U. Company regarding the performance and testing of an experimental pump. | 29th Jul 1936 | Box 149 \ 1 scan0265 | |
| Letter from S.U. Company discussing pump adjustments and the effectiveness of air bottles, requesting further instructions. | 30th Jul 1936 | Box 149 \ 1 scan0266 | |
| Letter to The S.U. Company Ltd. requesting two pumps with reduced loading for endurance testing. | 30th Jul 1936 | Box 149 \ 1 scan0267 | |
| Letter from The S.U. Company regarding the production of two pumps with reduced loading. | 31th Jul 1936 | Box 149 \ 1 scan0268 | |
| Letter to S.U. Carburetter Co. Ltd. requesting a dimensional drawing for a high lift pump. | 4th Aug 1936 | Box 149 \ 1 scan0269 | |
| Letter from The S.U. Company enclosing a print showing the overall dimensions of a high pressure pump. | 6th Aug 1936 | Box 149 \ 1 scan0270 | |
| | | | |
