| Description | Date | Identifier | |
| Letter from Vandervell Products Ltd. discussing the manufacturing specifications and supply of pressed bushes. | 13th Jun 1938 | Box 115 \ 3 scan0237 | |
| Letter from Vandervell Products Ltd. regarding a quotation for Rocker and Little End Bushes. | 15th Jun 1938 | Box 115 \ 3 scan0238 | |
| Failure of whitemetal big end bearings on a 3½ Litre Bentley and recommending upgrades to the 4¼ litre specification. | 15th Jun 1938 | Box 115 \ 3 scan0239 | |
| Letter from Vandervell Products Ltd. regarding the supply and manufacturing methods for Bushes. | 27th Jun 1938 | Box 115 \ 3 scan0240 | |
| Technical drawing for a small end connecting rod grooved bush. | 16th Jun 1938 | Box 115 \ 3 scan0241 | |
| Sketch showing a type of spiral shell reamer with Wimet tips for reaming Vandervell bushes. | 24th Jun 1938 | Box 115 \ 3 scan0242 | |
| Blueprint of a burnishing tool with a pilot for hand burnishing, showing the design of the broach. | 20th Aug 1934 | Box 115 \ 3 scan0243 | |
| Drawing of a punch tool used for pressing bushes into a housing. | 21th Nov 1935 | Box 115 \ 3 scan0244 | |
| Letter to Vandervell Products Ltd. regarding sample parts and a completed 20-hour endurance test on main bearings. | 28th Jun 1938 | Box 115 \ 3 scan0245 | |
| Use and specification of AC2 material for manufacturing bushes. | 28th Jun 1938 | Box 115 \ 3 scan0246 | |
| Letter to Vandervell Products Ltd. regarding dimensional discrepancies in sample rocker and little end bushes. | 30th Jun 1938 | Box 115 \ 3 scan0247 | |
| The final page of a letter discussing hints on reaming and broaching. | 30th Jun 1938 | Box 115 \ 3 scan0248 | |
| Manufacturing drawing for a plain split bush made from D2 Bimetal. | 16th Feb 1938 | Box 115 \ 3 scan0249 | |
| Letter from Vandervell Products Ltd. regarding the supply of rocker arm and little end bushes. | 1st Jul 1938 | Box 115 \ 3 scan0250 | |
| Blueprint drawing for a plain rocker bush used in the Wraith model. | 16th Jun 1938 | Box 115 \ 3 scan0251 | |
| Letter from Vandervell Products Ltd. advising on the despatch of sample little end and rocker bushes for testing. | 5th Jul 1938 | Box 115 \ 3 scan0252 | |
| Letter to Vandervell Products Ltd regarding the failure of a main bearing thrust washer and proposing alternative solutions. | 9th Jul 1938 | Box 115 \ 3 scan0253 | |
| Requesting the measurement and comparative testing of different bearing metals on a bearing rig. | 9th Jul 1938 | Box 115 \ 3 scan0254 | |
| Letter from Vandervell Products Ltd. regarding revised blueprints for Camshaft Bearings and a subsequent conversation. | 9th Jul 1938 | Box 115 \ 3 scan0255 | |
| Letter from a supplier discussing manufacturing tolerances and allowances for Camshaft Bearings. | 10th Jun 1938 | Box 115 \ 3 scan0256 | |
| Official order be placed with Vandervell Products Ltd. for rocker and little end bushes. | 11th Jul 1938 | Box 115 \ 3 scan0257 | |
| Letter from Vandervell Products Ltd. regarding trouble experienced with Thrust Washers. | 12th Jul 1938 | Box 115 \ 3 scan0258 | |
| Letter from Vandervell Products Ltd discussing issues with washers and bearings. | 12th Jul 1938 | Box 115 \ 3 scan0259 | |
| Letter to F. Perkins Ltd. regarding the use and machining of aluminium tin bearings. | 18th Jul 1938 | Box 115 \ 3 scan0260 | |
| Test report on the condition of Bentley main bearings after removal from a test rig. | 18th Jul 1938 | Box 115 \ 3 scan0261 | |
| Photograph of Bentley main bearings after 9.5 hours of running on a test rig. | 18th Jul 1938 | Box 115 \ 3 scan0262 | |
| Photograph showing cracks on the rear face of a Bentley main thrust bearing after test rig running. | 21th Jul 1938 | Box 115 \ 3 scan0263 | |
| Letter to Vandervell Products Ltd. inquiring about fitting camshaft bearings without reamering. | 21th Jul 1938 | Box 115 \ 3 scan0264 | |
| Request to analyse an attached bearing to determine if it is type A.C.2 or A.C.7. | 22th Jul 1938 | Box 115 \ 3 scan0265 | |
| Letter from Vandervell Products Ltd. regarding the fitting of camshaft bearings. | 27th Jul 1938 | Box 115 \ 3 scan0266 | |
| Short memo confirming the material composition of a bearing. | 15th Aug 1938 | Box 115 \ 3 scan0267 | |
| Letter to Vandervell Products Ltd. regarding orders for bearings, bushes, and requesting quotations. | 18th Aug 1938 | Box 115 \ 3 scan0268 | |
| Letter from Vandervell Products Ltd. regarding an order for camshaft bearings and quoting prices for bushes. | 19th Aug 1938 | Box 115 \ 3 scan0269 | |
| Internal request to place an official order for 3 sets of main bearings (Babbit) with Vandervell Products Ltd. | 19th Aug 1938 | Box 115 \ 3 scan0270 | |
| Letter from Vandervell Products Ltd. regarding sending Clevite brake material samples and clarifying an order for Camshaft Bearings. | 20th Aug 1938 | Box 115 \ 3 scan0271 | |
| Letter to Vandervell Products Ltd. regarding cam bearings, drawing modifications, and an order. | 22th Aug 1938 | Box 115 \ 3 scan0272 | |
| Letter from Vandervell Products Ltd. regarding camshaft bearings for Order No. 63622. | 23th Aug 1938 | Box 115 \ 3 scan0273 | |
| Letter to Vandervell Products Ltd requesting 40 sample rocker bushes for an experimental engine trial. | 29th Aug 1938 | Box 115 \ 3 scan0274 | |
| Letter to Vandervell Products Ltd. concerning modifications for fitting their bearings to an experimental unit. | 31th Aug 1938 | Box 115 \ 3 scan0275 | |
| Specification letter detailing the components included in a bearing and thrust washer set. | 31th Aug 1938 | Box 115 \ 3 scan0276 | |
| Letter from Vandervell Products Ltd. regarding the production of 40 experimental Babbitt lined steel Rocker Bushes. | 1st Sep 1938 | Box 115 \ 3 scan0277 | |
| Letter from Vandervell Products Ltd. acknowledging receipt of blueprints for bearings for an experimental unit. | 2nd Sep 1938 | Box 115 \ 3 scan0278 | |
| Specification sheet for a 'Rocker Bush' part, detailing materials, dimensions, and inspection criteria. | 31th Aug 1938 | Box 115 \ 3 scan0279 | |
| Letter from Vandervell Products Ltd. discussing case bore dimensions for a set of experimental bearings. | 3rd Sep 1938 | Box 115 \ 3 scan0280 | |
| Letter from Vandervell Products Ltd. enclosing a blueprint for experimental sets with specified case bore dimensions. | 10th Sep 1938 | Box 115 \ 3 scan0281 | |
| Letter to Vandervell Products Ltd concerning main bearing layout L.1095 and ordering experimental sets. | 13th Sep 1938 | Box 115 \ 3 scan0282 | |
| Letter from Vandervell Products Ltd. regarding layout approval and the proceeding of an order for experimental bearings. | 14th Sep 1938 | Box 115 \ 3 scan0283 | |
| Installation drawing for D2 bimetal main bearings for a 6-cylinder engine. | 9th Sep 1938 | Box 115 \ 3 scan0284 | |
| Modifications to Vandervell main bearings for B.III and Wraith III models. | 10th Sep 1938 | Box 115 \ 3 scan0285 | |
| Testing Hoyt bearings and comparing them to Vandervell bearings for the Wraith model. | 19th Sep 1938 | Box 115 \ 3 scan0286 | |
| The assembly of a Bearing Rig Engine following a bearing and crankshaft failure. | 23th Sep 1938 | Box 115 \ 3 scan0287 | |
| Letter from Vandervell Products Ltd. regarding the suitability of various engine bearings. | 23th Sep 1938 | Box 115 \ 3 scan0288 | |
| Letter to Vandervell Products Ltd. regarding a delivery date and technical queries for L.1095 main bearings. | 3rd Oct 1938 | Box 115 \ 3 scan0289 | |
| Modifications for Vandervell main bearings on Wraith III and Bentley III models. | 3rd Oct 1938 | Box 115 \ 3 scan0290 | |
| Instructions for modifying a standard crankcase casting to use Vandervell bearings for an experiment. | 3rd Oct 1938 | Box 115 \ 3 scan0291 | |
| Letter from Vandervell Products Ltd regarding the dispatch of three sets of bearings and an enclosed lay-out print. | 4th Oct 1938 | Box 115 \ 3 scan0292 | |
| Instruction to incorporate modification ECD.924 for Vandervell main bearings on specific units to prevent oil leakage. | 5th Oct 1938 | Box 115 \ 3 scan0293 | |
| Confirming the fitting of Vandervell main bearings to the B.80 engine and outlining bearing layout differences with the B.60 engine. | 11th Oct 1938 | Box 115 \ 3 scan0294 | |
| Letter to Vandervell Products Ltd. detailing modifications to a rear bearing drawing. | 11th Oct 1938 | Box 115 \ 3 scan0295 | |
| Page 2 of a letter to Messrs. Vandervell Products Ltd. regarding the positioning of bearing lugs. | 11th Oct 1938 | Box 115 \ 3 scan0296 | |
| Letter to Vandervell Products Ltd. addressing rumors about the unreliability of A.C.9 big-end bearings. | 18th Oct 1938 | Box 115 \ 3 scan0297 | |
| The order of various engine components. | 26th Oct 1938 | Box 115 \ 3 scan0298 | |
| Introduction of AC.9 die-cast main bearings for Bentley II production, outlining testing and examination requirements. | 2nd Nov 1938 | Box 115 \ 3 scan0299 | |
| Requesting the allocation of an engine to test Whitemetal Main Bearings for the Wraith model, supplied by the Hoyt Metal Company. | 3rd Nov 1938 | Box 115 \ 3 scan0300 | |
| Analysis discrepancies in A.C.9 alloy from outside suppliers and arranging a visit to resolve the issue. | 5th Nov 1938 | Box 115 \ 3 scan0301 | |
| Method of analysis and production of A.C.9 alloy for aero bearings. | 5th Nov 1938 | Box 115 \ 3 scan0302 | |
| Confirming the ability to produce Die Cast Bentley Main Bearings at any time. | 7th Nov 1938 | Box 115 \ 3 scan0303 | |
| Allocation of Whitemetal main bearings for Wraith engines. | 7th Nov 1938 | Box 115 \ 3 scan0304 | |
| Order for Rocker bushes and Filters from Vandervell Products Ltd. | 8th Nov 1938 | Box 115 \ 3 scan0305 | |
| Sending rings of AC.9 material to America for the production of 50 bearings. | 8th Nov 1938 | Box 115 \ 3 scan0306 | |
| To Mr. Wheeler of Alum Foundry regarding the dimensions and supply of A.C.9 bearings for an urgent order. | 12th Nov 1938 | Box 115 \ 3 scan0307 | |
| Letter from Vandervell Products Ltd. regarding the return of tin-plated Clevite Intermediate Bearings. | 18th Nov 1938 | Box 115 \ 3 scan0308 | |
| Requesting production of intermediate bearings in AC.9 alloy following a 15,000-mile test. | 22th Nov 1938 | Box 115 \ 3 scan0309 | |
| Requesting the return of a half bearing to Vandervell Products Ltd. | 1st Dec 1938 | Box 115 \ 3 scan0310 | |
| Letter to Vandervell Products Ltd regarding the trial of main bearings for a larger diameter crank journal. | 2nd Dec 1938 | Box 115 \ 3 scan0311 | |
| Letter to Vandervell Products Ltd. regarding the production of specific engine main bearings and potential modifications. | 3rd Dec 1938 | Box 115 \ 3 scan0312 | |
| Letter from Vandervell Products Ltd. acknowledging receipt of a letter from the Experimental Department. | 5th Dec 1938 | Box 115 \ 3 scan0313 | |
| Letter from Vandervell Products Ltd. acknowledging a letter regarding Main Bearings with 2.75' bore. | 5th Dec 1938 | Box 115 \ 3 scan0314 | |
| Letter to Vandervell Products Ltd. regarding an oil leak issue attributed to grooved thrust washers, requesting plain Babbit-faced replacements. | 8th Dec 1938 | Box 115 \ 3 scan0315 | |
| Letter from Vandervell Products Ltd. concerning Main Bearings and a planned visit. | 8th Dec 1938 | Box 115 \ 3 scan0316 | |
| Letter from Vandervell Products regarding oil leaks and the supply of new Main Bearing Crank Thrust Washer samples for testing. | 9th Dec 1938 | Box 115 \ 3 scan0317 | |
| Letter to a supplier regarding an incorrect order fulfillment for thrust washers and bearings. | 12th Dec 1938 | Box 115 \ 3 scan0318 | |
| Requesting a summary of issues concerning Bentley bearings, particularly sinkage. | 12th Dec 1938 | Box 115 \ 3 scan0319 | |
| Letter from Vandervell Products Ltd. regarding the dispatch of thrust washers and bearings. | 13th Dec 1938 | Box 115 \ 3 scan0320 | |
| Letter from Vandervell Products Ltd. regarding an order for 4 sets of Main Bearings to Layout No. L.1095. | 14th Dec 1938 | Box 115 \ 3 scan0321 | |
| Responding to questions about Bentley bearings. | 13th Dec 1938 | Box 115 \ 3 scan0322 | |
| Letter from Vandervell Products Ltd. regarding the supply of vibration damper bushes. | 14th Dec 1938 | Box 115 \ 3 scan0323 | |
| Letter to Vandervell Products Ltd. requesting an arrangement drawing for an increased main journal size and confirming an order for more bushes. | 15th Dec 1938 | Box 115 \ 3 scan0324 | |
| Letter from Vandervell Products Ltd. confirming manufacture of bearings and bushes. | 16th Dec 1938 | Box 115 \ 3 scan0325 | |
| Letter from Vandervell Products Ltd. enclosing Layout No. L.1118 for bearings for a 2 3/4' diameter shaft. | 20th Dec 1938 | Box 115 \ 3 scan0326 | |
| Letter to Vandervell Products Ltd. regarding modifications for thrust washers on an experimental journal crank engine. | 28th Dec 1938 | Box 115 \ 3 scan0327 | |
| Letter from Vandervell Products Ltd. enclosing a blueprint of Layout No.L.1118 concerning a Thrust Washer. | 29th Dec 1938 | Box 115 \ 3 scan0328 | |
| Blueprint for the installation of a centre main bearing in D2 Bimetal. | 29th Dec 1938 | Box 115 \ 3 scan0329 | |
| Letter from Vandervell Products regarding a revised blueprint for a Thrust Washer and arranging contact. | 31th Dec 1938 | Box 115 \ 3 scan0330 | |
| Acknowledgement letter to Wellworthy Piston Rings Ltd. about a delayed response. | 6th Jul 1939 | Box 115 \ 4 scan0001 | |
| Request to dispatch two big end bearings to Wellworthy Piston Rings Ltd. | 12th Jul 1939 | Box 115 \ 4 scan0002 | |
| Letter to Wellworthy Piston Rings Ltd. regarding big end bearings received from Alfas, noting a mark on a cracked bearing. | 12th Jul 1939 | Box 115 \ 4 scan0003 | |
| Letter from a piston ring supplier discussing progress and issues with AC.9 bearings and big end bearings for 4 and 6 cylinder engines. | 13th Jul 1939 | Box 115 \ 4 scan0004 | |
| Letter from Wellworthy Piston Rings regarding the failure of bearings and proposed modifications for testing. | 13th Jul 1939 | Box 115 \ 4 scan0005 | |
| Drawing of a con-rod bearing (bottom half) for Dennis Bros. | 21th Jul 1939 | Box 115 \ 4 scan0006 | |
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