| Description | Date | Identifier | |
| Analysis of two different types of bearing whitemetal. | 8th Dec 1936 | Box 115 \ 1 scan0169 | |
| Procedure for addressing main bearing issues on a 4 1/2 Litre Bentley. | 8th Dec 1936 | Box 115 \ 1 scan0170 | |
| Modifications and replacement procedures for main and big-end bearings on the 3½ Litre Bentley. | 8th Dec 1936 | Box 115 \ 1 scan0171 | |
| Specific engine parts for a Bentley B.26.JD production car for a special customer. | 8th Dec 1936 | Box 115 \ 1 scan0172 | |
| Standardisation report for main and big end bearing shims made from R.R.56 solid metal, replacing steel shims with Hall's alloy. | 26th Oct 1936 | Box 115 \ 1 scan0173 | |
| Estimated cost for extra jigs, tools and equipment required for production. | 2nd Nov 1936 | Box 115 \ 1 scan0174 | |
| Letter to The Hoyt Metal Co. regarding the lining of main bearing shells and the suitability of 'Satco' metal. | 10th Dec 1936 | Box 115 \ 1 scan0175 | |
| Meeting notes regarding Bentley crankshaft bearing failures and proposed modifications. | 10th Dec 1936 | Box 115 \ 1 scan0176 | |
| Summary of proposed technical improvements for the 4¼ litre Bentley and other engine components. | 10th Dec 1936 | Box 115 \ 1 scan0177 | |
| Modifications to crankshaft main bearings, new dies, and flywheel removal. | 10th Dec 1936 | Box 115 \ 1 scan0178 | |
| Letter from The Hoyt Metal Company of Great Britain regarding the status of shells sent to be lined. | 10th Dec 1936 | Box 115 \ 1 scan0179 | |
| Changing the bearing alloy for Bentley 25/30 HP chassis due to big end failures. | 10th Dec 1936 | Box 115 \ 1 scan0180 | |
| Telegram regarding a preference for final reamer bearings for a specific Bentley chassis crankshaft. | 10th Dec 1936 | Box 115 \ 1 scan0181 | |
| Telegram regarding a chassis, confirming the preference to final ream bearings in a new upper half crankcase. | 10th Dec 1935 | Box 115 \ 1 scan0182 | |
| Requesting a covering order to the Hoyt Metal Co. for lining a set of Bentley Bearing Shells. | 11th Dec 1936 | Box 115 \ 1 scan0183 | |
| Letter to The Hoyt Metal Company requesting they line shells with Z3 bearing material. | 11th Dec 1936 | Box 115 \ 1 scan0184 | |
| Letter from The Hoyt Metal Company discussing the suitability of SATCO metal for aero engines and suggesting a delay for further information. | 12th Dec 1936 | Box 115 \ 1 scan0185 | |
| Telegram received by telephone. | 14th Dec 1936 | Box 115 \ 1 scan0186 | |
| Standardisation sheet memo regarding Bentley big end bearings and their clearances. | 16th Dec 1936 | Box 115 \ 1 scan0187 | |
| Inquiry to The Hoyt Metal Company about how their Z.3 bearing material compares to Bugatti's AU.6 material. | 15th Dec 1936 | Box 115 \ 1 scan0188 | |
| Test bench and road tests for various engine bearings, outlining the structure of the subsequent analysis. | 15th Dec 1936 | Box 115 \ 1 scan0189 | |
| The development and testing of A.C.7. aluminium tin alloy for engine bearings. | 15th Dec 1936 | Box 115 \ 1 scan0190 | |
| Engine endurance testing, detailing big end seizure failures and the effects of lubrication modifications. | 15th Dec 1930 | Box 115 \ 1 scan0191 | |
| The performance and failure analysis of various main and big end bearing materials. | 15th Dec 1936 | Box 115 \ 1 scan0192 | |
| Report comparing the performance and failure rates of different bearing materials under load, including main bearing issues. | 15th Dec 1936 | Box 115 \ 1 scan0193 | |
| The testing and performance of various alternative engine bearings, detailing failures and endurance results. | 15th Dec 1936 | Box 115 \ 1 scan0194 | |
| Various whitemetal alloys, failures of shim facings, and patterns of crankshaft journal wear. | 15th Dec 1936 | Box 115 \ 1 scan0195 | |
| Analysis of crankshaft and journal wear, and the results of endurance tests on RR.56 big end material. | 15th Dec 1936 | Box 115 \ 1 scan0196 | |
| Experiments with improved lubrication, main bearings, and the effectiveness of an external filter. | 15th Dec 1936 | Box 115 \ 1 scan0197 | |
| Bar chart comparing the total endurance running time for various connecting rod bearings. | 21th Nov 1936 | Box 115 \ 1 scan0198 | |
| Bar chart comparing the total running time and endurance of various types of main bearings. | 27th Nov 1936 | Box 115 \ 1 scan0199 | |
| Photograph of No.2 and No.5 big end bearings, made from A.C.2 and A.C.4 alloys, showing their condition after a timed engine test. | 27th Nov 1936 | Box 115 \ 1 scan0200 | |
| Photographic comparison of a Rear Main Bearing and a No.4 Big End Bearing after a test run. | 27th Nov 1936 | Box 115 \ 1 scan0201 | |
| Photographic record of engine bearing and liner failure after an endurance test. | 27th Nov 1936 | Box 115 \ 1 scan0202 | |
| Photograph showing B.17 unit big end bearings after various specified load and duration tests. | 27th Nov 1936 | Box 115 \ 1 scan0203 | |
| Photograph displaying a set of B.19 big end bearings and shims after testing, highlighting a specific bearing failure. | 27th Nov 1936 | Box 115 \ 1 scan0204 | |
| Photographic record of B.3 Unit Big End Bearings and liners after a running time test. | 27th Nov 1936 | Box 115 \ 1 scan0205 | |
| Photograph showing B.17 unit Hoyt's metal main bearings and shims after an 11-hour full throttle endurance test. | 27th Nov 1936 | Box 115 \ 1 scan0206 | |
| Photograph showing B.17 unit Hoyt's Z3 alloy main bearings and shims after a 22-hour full throttle endurance test. | 27th Nov 1936 | Box 115 \ 1 scan0207 | |
| Photograph of B3 unit RR.56 main bearings with modified intermediate grooves after a running-in period, showing signs of seizing. | 27th Nov 1936 | Box 115 \ 1 scan0208 | |
| Photograph showing the condition of upper and lower main bearing halves from a B.22 unit. | 27th Nov 1936 | Box 115 \ 1 scan0209 | |
| Photograph showing the condition of Bentley Z8 B.H. unit trials car bearings after 22,000 miles of running. | 27th Nov 1936 | Box 115 \ 1 scan0210 | |
| Photographic record of big end bearing failure after a 15,000-mile test. | 27th Nov 1936 | Box 115 \ 1 scan0211 | |
| Inspection of standard white metal unit main bearings after bed running. | 27th Nov 1936 | Box 115 \ 1 scan0212 | |
| Photograph showing a set of six big end bearings after a mileage and test bed run. | 16th Dec 1936 | Box 115 \ 1 scan0213 | |
| Service instructions for addressing bearing roughness and thumping on a 4¼-Litre Bentley. | 16th Dec 1936 | Box 115 \ 1 scan0214 | |
| Instructions on fitting and modifying Whitemetal main bearings for the 3½-Litre Bentley. | 18th Dec 1936 | Box 115 \ 1 scan0215 | |
| Blueprint showing a modification to a liner to take up hammering and give pressure on the joint faces of a bearing. | 18th Dec 1936 | Box 115 \ 1 scan0216 | |
| Blueprint for a modification to drawing EB.2814, detailing a dowel and groove. | 18th Dec 1936 | Box 115 \ 1 scan0217 | |
| Supply and price comparison of bearings for Bentley and Phantom III models. | 16th Dec 1936 | Box 115 \ 1 scan0218 | |
| Investigating whether the material used for Bentley chassis big end bearings was forged or extruded bar. | 14th Jan 1936 | Box 115 \ 1 scan0219 | |
| Letter to The National Smelting Company regarding specifications for a Cadmium-Nickel Bearing Alloy. | 18th Dec 1936 | Box 115 \ 1 scan0220 | |
| Inquiry to The Glacier Metal Co. regarding the production of experimental chassis bearings to a given specification. | 18th Dec 1936 | Box 115 \ 1 scan0221 | |
| Letter to The Hoyt Metal Co. Ltd. regarding a delay in lining main bearings with 'Satio' metal and a request to test it. | 18th Dec 1936 | Box 115 \ 1 scan0222 | |
| The Bentley engine's crankshaft, bearings, oil filter, riding control, oil pump, and valve rocker gear lubrication. | 18th Dec 1936 | Box 115 \ 1 scan0223 | |
| Order numbers for the production and fitting of Bentley R.R. 56 Bearings. | 17th Dec 1936 | Box 115 \ 1 scan0224 | |
| Request to inspect a unit from a customer's car (B-47-HM) due to a big end bearing failure. | 19th Dec 1936 | Box 115 \ 1 scan0225 | |
| Letter from The National Smelting Company Limited regarding cadmium-nickel bearing alloys. | 21th Dec 1936 | Box 115 \ 1 scan0226 | |
| Standardization of oil pumps for Bentley crankshafts and big end bearings to address noise issues. | 21th Dec 1936 | Box 115 \ 1 scan0227 | |
| The material and stress treatment for big end bearings on a Bentley Chassis. | 21th Dec 1936 | Box 115 \ 1 scan0228 | |
| Urgent internal memo requesting 6 sets of main and big end bearing shims for a Bentley, to be sent to the Paris Depot. | 23th Dec 1936 | Box 115 \ 1 scan0229 | |
| Test for machining car engine bearings and crankcases to size without reaming. | 24th Dec 1936 | Box 115 \ 1 scan0230 | |
| Letter from National Alloys Limited enclosing a bulletin on NS.5 bearing metal. | 24th Dec 1936 | Box 115 \ 1 scan0231 | |
| Letter from The Glacier Metal Company Ltd. regarding the supply of experimental chassis bearings. | 28th Dec 1936 | Box 115 \ 1 scan0232 | |
| Requesting the despatch of 25/30 main bearing shells to the National Smelting Co. for metalling. | 29th Dec 1936 | Box 115 \ 1 scan0233 | |
| Letter to The National Smelting Co. Ltd. regarding a trial of a Cadmium-Nickel alloy (N.S.5.) for main bearing shells. | 29th Dec 1936 | Box 115 \ 1 scan0234 | |
| Letter to The National Smelting Co., Ltd. confirming the despatch of main bearing shells to Messrs Walker Bros. Ltd. | 30th Dec 1936 | Box 115 \ 1 scan0235 | |
| Letter to The Glacier Metal Company Limited regarding an enquiry for Cadmium-Nickel Bearing alloy. | 30th Dec 1936 | Box 115 \ 1 scan0236 | |
| Proposal for improving the lubrication of the Bentley rear axle pinion thrust bearing. | 24th Dec 1936 | Box 115 \ 1 scan0237 | |
| Letter from The Hoyt Metal Company regarding a query on bearing materials used by Bugatti. | 31th Dec 1936 | Box 115 \ 1 scan0238 | |
| Concluding page of a letter from The Hoyt Metal Co. of Great Britain, Limited. | 31th Dec 1936 | Box 115 \ 1 scan0239 | |
| Requesting a change of delivery address for a set of main bearing shells. | 31th Dec 1936 | Box 115 \ 1 scan0240 | |
| Query regarding the supply of .110' thick shims for Bentley main bearings. | 1st Jan 1937 | Box 115 \ 1 scan0241 | |
| Supply of R.R.56 shims for Bentley main bearings. | 4th Jan 1936 | Box 115 \ 1 scan0242 | |
| Confusion regarding bearings used on the Bugatti car, forwarding a letter from Hoyt Metal Co. | 5th Jan 1937 | Box 115 \ 1 scan0243 | |
| Recommendations to address engine overoiling and oil consumption issues on car 3-AZ 170. | 5th Jan 1937 | Box 115 \ 1 scan0244 | |
| Potential causes for excessive oil consumption, including breather pipe loss and oil jet feed holes. | 5th Jan 1937 | Box 115 \ 1 scan0245 | |
| The cancellation of RR.56 material for big end bearings on Bentley chassis due to a test failure. | 7th Jan 1937 | Box 115 \ 1 scan0246 | |
| Failures of big-end bearings on Bentley engines and recommending a halt to production pending further testing. | 7th Jan 1937 | Box 115 \ 1 scan0247 | |
| Letter from The National Smelting Company regarding test bearings lined with Cadmium-Nickel alloy. | 8th Jan 1936 | Box 115 \ 1 scan0248 | |
| Specifications and production implications of a crankshaft with increased diameter journal bearings. | 8th Jan 1937 | Box 115 \ 1 scan0249 | |
| Adhesion properties of RR.56 bearing metal compared to white metal when bedding in bearings. | 9th Jan 1937 | Box 115 \ 1 scan0250 | |
| Letter to The Hoyt Metal Company regarding bearings used on a Bugatti in France. | 11th Jan 1937 | Box 115 \ 1 scan0251 | |
| Bearing issues in Bentley cars sold on the Continent and proposing a special model to address this. | 11th Jan 1937 | Box 115 \ 1 scan0252 | |
| Letter regarding a discrepancy in quantities and drawing numbers for a set of main bearings. | 12th Jan 1937 | Box 115 \ 1 scan0253 | |
| Correct procedure for replacing Bentley main bearings, recommending complete unit removal. | 12th Jan 1937 | Box 115 \ 1 scan0254 | |
| Material discrepancy in experimental bearings and the correct procedure for analysis and record keeping. | 14th Jan 1937 | Box 115 \ 1 scan0255 | |
| Letter to Vandervell Products Ltd. regarding main bearing dimensions and requesting clarification on thrust bearing parts. | 15th Jan 1937 | Box 115 \ 1 scan0256 | |
| Internal query and response regarding the cost of a job, filed under bearings. | 15th Dec 1936 | Box 115 \ 1 scan0257 | |
| Analysis of cost for tightening up bearings with the crankshaft in position. | 15th Dec 1936 | Box 115 \ 1 scan0258 | |
| Letter from Vandervell Products regarding a discussion for the fitting of Main and Big End bearings. | 16th Jan 1937 | Box 115 \ 1 scan0259 | |
| Urgent request for main bearings with liners for 3 1/2 litre Bentley cars at the Paris Depot. | 16th Jan 1937 | Box 115 \ 1 scan0260 | |
| Letter from The Hoyt Metal Company clarifying a misunderstanding about an anti-friction metal alloy. | 16th Jan 1937 | Box 115 \ 1 scan0261 | |
| Letter from The Hoyt Metal Co. discussing the supply and performance of Hoyt AV.B and Hoyt NUMBER ELEVEN metals. | 16th Jan 1937 | Box 115 \ 1 scan0262 | |
| Letter to Messrs Walker Bros Ltd. explaining a discrepancy in the quantity of bearing shells supplied. | 20th Jan 1937 | Box 115 \ 1 scan0263 | |
| Letter from Vandervell Products Ltd. sending lay-outs for Bentley Mains and Big Ends. | 20th Jan 1937 | Box 115 \ 1 scan0264 | |
| Letter to Major Halford about an advertisement indicating the use of RR.56 rods and proposing a discussion on aluminium alloys for bearings. | 21th Jan 1937 | Box 115 \ 1 scan0265 | |
| Fitting of Bentley main and big end bearings supplied by Vandervell Products Ltd. | 26th Jan 1937 | Box 115 \ 1 scan0266 | |
| Order for three sets of Cleveland Graphite Bronze Bearings. | 27th Jan 1937 | Box 115 \ 1 scan0267 | |
| Internal memorandum requesting an order be placed with Vandervell Products Ltd for Bentley bearings. | 27th Jan 1937 | Box 115 \ 1 scan0268 | |
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