| Description | Date | Identifier | |
| Cost estimation for new tools relating to the standardisation of parts for the Phantom III 'E' Series chassis. | 15th Mar 1938 | Box 115 \ 1 scan0369 | |
| Official order for two sets of Clevite thrust washers received from Vandervell Products Ltd. | 14th Jul 1938 | Box 115 \ 1 scan0370 | |
| Comparison of intermediate bearing loads in Wraith III and Bentley 111 crankshafts. | 5th Dec 1938 | Box 115 \ 2 scan0371 | |
| Analysis of engine running speeds, explosion pressures, and bearing loads, comparing Bentley and Wraith models. | 5th Dec 1938 | Box 115 \ 2 scan0372 | |
| Comparison of crankshaft bearing loads and pressures for Wraith III and B.III engines under various conditions. | 5th Dec 1938 | Box 115 \ 2 scan0373 | |
| Experimental department report on the balancing of Peregrine crankshafts. | 10th Jan 1939 | Box 115 \ 2 scan0374 | |
| Kestrel engine development tests concerning crankcase and bearing issues at Peregrine ratings. | 10th Jan 1939 | Box 115 \ 2 scan0375 | |
| Peregrine development engine tests, focusing on crankshaft balancing and main bearing performance. | 10th Jan 1939 | Box 115 \ 2 scan0376 | |
| Analysis of bearing wear following tests on balanced and unbalanced VCM crankshafts, with reference to load diagrams. | 10th Jan 1939 | Box 115 \ 2 scan0377 | |
| Conclusion of a report on main bearing failures, comparing the effects of balanced versus unbalanced crankshafts. | 10th Jan 1939 | Box 115 \ 2 scan0378 | |
| The assumptions for calculating the bending of a Peregrine crankshaft. | 10th Jan 1939 | Box 115 \ 2 scan0379 | |
| Calculations for bending moments, slope, and balance weight effects. | 10th Jan 1939 | Box 115 \ 2 scan0380 | |
| Calculations for shaft bending, load distribution, and forces on bearings. | 10th Jan 1939 | Box 115 \ 2 scan0381 | |
| Analysis of engine loads and the effect of balance weights on them, with results presented in tables. | 10th Jan 1939 | Box 115 \ 2 scan0382 | |
| Calculations for beam deflection and reaction forces related to crankpin and balance weight loads on a journal. | 10th Jan 1939 | Box 115 \ 2 scan0383 | |
| Crankshaft analysis showing calculations for loads and slopes with and without balance weights. | 3rd Apr 1935 | Box 115 \ 2 scan0384 | |
| Photograph documenting a cracked crankcase part after 207 hours of running time. | 3rd Apr 1935 | Box 115 \ 2 scan0385 | |
| Photograph showing the condition of Kestrel engine main bearings after a development test. | 24th Apr 1937 | Box 115 \ 2 scan0386 | |
| Condition of main bearings from Kestrel 4329 engine after 100 hours of development running at Tereghine rating. | 10th Aug 1937 | Box 115 \ 2 scan0387 | |
| Photograph showing the condition of Peregrine No.1 engine's Nos.1 & 7 main bearings after a development test. | 11th Dec 1937 | Box 115 \ 2 scan0388 | |
| Photograph showing the condition of Peregrine I.RH.S. main bearings after a 330-hour test run. | 17th Jun 1941 | Box 115 \ 2 scan0389 | |
| Polar plot diagram illustrating the load on a centre main bearing, comparing balanced and unbalanced forces. | 17th Jun 1941 | Box 115 \ 2 scan0390 | |
| Polar plot diagram showing the load on an end main bearing at 2850 RPM and 206 M.E.P. | 17th Jun 1941 | Box 115 \ 2 scan0391 | |
| Polar plot diagram illustrating the load on a journal due to a crank throw over one cycle at 2850 RPM. | 2nd Feb 1939 | Box 115 \ 2 scan0392 | |
| Notes on a proposed scheme for 'Packard' type balance weights on a Phantom III crankshaft. | 2nd Feb 1939 | Box 115 \ 2 scan0393 | |
| Crankshaft balancing, comparing the effectiveness of inner and outer intermediate bearings. | 2nd Feb 1939 | Box 115 \ 2 scan0394 | |
| Comparison of various schemes of balance weights for the Wraith III engine crankshaft. | 29th Dec 1938 | Box 115 \ 2 scan0395 | |
| Analysis of bearing loads under various balance weight schemes, with calculations and conclusions. | 29th Dec 1938 | Box 115 \ 2 scan0396 | |
| Comparison of two engine balancing schemes and their effects on bearings and critical speed. | 29th Dec 1938 | Box 115 \ 2 scan0397 | |
| Calculation of bearing loads for a 4 cylinder engine with a 3 ½' bore and 3 ¾' stroke. | 12th May 1939 | Box 115 \ 2 scan0398 | |
| Page of calculations for bearing pressures, inertia, and explosion loads, with a comparison to the Wraith III model. | 12th May 1939 | Box 115 \ 2 scan0399 | |
| Analysis of engine bearing pressures with suggested improvements and general notes on a 4-cylinder engine. | 12th May 1939 | Box 115 \ 2 scan0400 | |
| Requesting a scheme for a 2.75 journal diameter crank and a design for housing rubbers for rocker cover nuts. | 2nd Jan 1939 | Box 115 \ 2 scan0401 | |
| Order for two types of rocker bushes from the supplier Vandervells. | 3rd Jan 1939 | Box 115 \ 2 scan0402 | |
| Order for little end bushes and Metalastik couplings for a Bentley V trial. | 14th Jan 1939 | Box 115 \ 2 scan0403 | |
| Prints for a rubber washer for the rocker cover on the Wraith III and Bentley II models. | 19th Jan 1939 | Box 115 \ 2 scan0404 | |
| Letter from the Experimental Dept. to Vandervell Products Ltd. regarding journal crank and thrust washer dimensions. | 20th Jan 1939 | Box 115 \ 2 scan0405 | |
| Letter from Vandervell Products Ltd. regarding the supply of Thrust Washers and a Damper Flywheel Bush. | 21th Jan 1939 | Box 115 \ 2 scan0406 | |
| Technical specifications for a Damper Flywheel Bush, part number B.2301. | 21th Jan 1939 | Box 115 \ 2 scan0407 | |
| Test results of AC.9 main bearing material for Bentley 'M' Series chassis engines. | 23th Jan 1939 | Box 115 \ 2 scan0408 | |
| Internal memorandum requesting the order of rubber washers with specific hardness requirements. | 23th Jan 1939 | Box 115 \ 2 scan0409 | |
| Letter to Vandervell Products Ltd. regarding the supply of thrust washers and the feasibility of producing grooved rocker bushes. | 27th Jan 1939 | Box 115 \ 2 scan0410 | |
| Letter from Vandervell Products Ltd. regarding the supply of Thrust Washers and Rocker Bushes. | 31th Jan 1939 | Box 115 \ 2 scan0411 | |
| Letter to Vandervell Products Ltd. discussing Clevite thrust washers, main bearings, and crankshaft dimensions. | 2nd Feb 1939 | Box 115 \ 2 scan0412 | |
| Revisions to crankcase bolt tab positions and thrust washers. | 2nd Feb 1939 | Box 115 \ 2 scan0413 | |
| Letter from Vandervell Products Ltd. confirming they are proceeding with alterations to Layout No. L.1108. | 6th Feb 1939 | Box 115 \ 2 scan0414 | |
| Letter from Vandervell Products Ltd. concerning special bearing material from America and requesting which of two enclosed layout prints are required for test samples. | 7th Feb 1939 | Box 115 \ 2 scan0415 | |
| Letter to Vandervell Products Ltd. discussing orders for bearings and engine journals. | 9th Feb 1939 | Box 115 \ 2 scan0416 | |
| Official order be placed with Vandervell Products Ltd. for special material bearings. | 9th Feb 1939 | Box 115 \ 2 scan0417 | |
| Letter from Vandervell Products Ltd. concerning the supply of three-layer bearings to specific layout numbers. | 10th Feb 1939 | Box 115 \ 2 scan0418 | |
| Cover letter from Vandervell Products Ltd. regarding a blueprint for Rear Main Bearings. | 11th Feb 1939 | Box 115 \ 2 scan0419 | |
| Blueprint showing detailed specifications for various engine bearings. | 25th Jun 1936 | Box 115 \ 2 scan0420 | |
| The trial and testing of Hoyts whitemetal lined main bearings for potential production use. | 14th Feb 1939 | Box 115 \ 2 scan0421 | |
| Photograph and test results for Hoyt's Metal Main Bearings from a No.4 Test Bed Unit. | 17th Feb 1939 | Box 115 \ 2 scan0422 | |
| Letter from Vandervell Products Ltd. concerning the production status and a delay on an order for bearings. | 17th Feb 1939 | Box 115 \ 2 scan0423 | |
| New bearing material from the International Tin Research & Development Council, and the subsequent action to be taken. | 2nd Mar 1939 | Box 115 \ 2 scan0424 | |
| Letter from the International Tin Research & Development Council regarding a new bearing material. | 27th Feb 1939 | Box 115 \ 2 scan0425 | |
| Requesting an order for six Clevite-lined bushes from Vandervell Ltd as per drawing ExS.1283. | 7th Mar 1939 | Box 115 \ 2 scan0426 | |
| Cost file document comparing prices of whitemetal bearings and inlet valves. | 8th Mar 1939 | Box 115 \ 2 scan0427 | |
| Inspection and production release of Hoyt's Whitemetal main bearings. | 10th Mar 1939 | Box 115 \ 2 scan0428 | |
| Requesting dimensional particulars for Hoyts white metal main bearings to enable the creation of production drawings. | 14th Mar 1939 | Box 115 \ 2 scan0429 | |
| Requesting an order for 12 modified rubber bushes based on drawing EXS.1529. | 14th Mar 1939 | Box 115 \ 2 scan0430 | |
| Requesting a covering order for payment of thrust washers from Vandervell Products Ltd. | 15th Mar 1939 | Box 115 \ 2 scan0431 | |
| New type Vandervell bearing for the B.60 unit No.4, which is planned to run for 15,000 miles. | 15th Mar 1939 | Box 115 \ 2 scan0432 | |
| Letter from the Experimental Department to Vandervell Products Ltd. detailing proposed dimensional modifications for rocker bush EB.4309. | 25th Mar 1939 | Box 115 \ 2 scan0433 | |
| Letter to Vandervell Products Ltd. regarding corrections to bush specifications. | 25th Mar 1939 | Box 115 \ 2 scan0434 | |
| Letter from supplier Vandervell Products Ltd. regarding oil groove specifications for a Bush part. | 27th Mar 1939 | Box 115 \ 2 scan0435 | |
| Letter to Vandervell Products Ltd. regarding the groove dimension for rocker bush EB.4733. | 28th Mar 1939 | Box 115 \ 2 scan0436 | |
| Letter from Vandervell Products Ltd. regarding the oil groove in Rocker Bush Part No. EB.4733. | 30th Mar 1939 | Box 115 \ 2 scan0437 | |
| Letter to Vandervell Products Ltd confirming specifications for rocker bush groove dimensions and lengths. | 31th Mar 1939 | Box 115 \ 2 scan0438 | |
| Research abstract on the composition, properties, and failures of various engine bearing alloys. | 1st Apr 1939 | Box 115 \ 2 scan0439 | |
| Article on the development and testing of new materials for high-duty bearings in Bentley and Rolls-Royce cars. | 11th Apr 1939 | Box 115 \ 2 scan0440 | |
| Article on the development of high-duty bearings and materials for Bentley engines. | 11th Apr 1939 | Box 115 \ 2 scan0441 | |
| The development of high-duty bearings, detailing the limitations of existing alloys and the creation and success of the A.C.9 alloy. | 11th Apr 1939 | Box 115 \ 2 scan0442 | |
| Article detailing new high-speed aluminium alloy bearings and their performance compared to other bearing metals. | 11th Apr 1939 | Box 115 \ 2 scan0443 | |
| Magazine page from 'The Motor' featuring a car recognition quiz with eight numbered photographs. | 11th Apr 1939 | Box 115 \ 2 scan0444 | |
| Letter to Vandervell Products Ltd. concerning the trial of 3-layer main bearings and big end bearings. | 12th Apr 1939 | Box 115 \ 2 scan0445 | |
| Letter to Vandervell Products Ltd. requesting a trial and costings for various quantities of 3-layer material bearings. | 12th Apr 1939 | Box 115 \ 2 scan0446 | |
| Letter from Vandervell Products Ltd. acknowledging receipt of drawings and a prior letter. | 13th Apr 1939 | Box 115 \ 2 scan0447 | |
| Quotation from Vandervell Products Ltd. for 5,000 pairs of connecting rod bearings. | 21th Apr 1939 | Box 115 \ 2 scan0448 | |
| Letter to Vandervell Products Ltd. confirming an order for various types of bearings for experimental trial. | 25th Apr 1939 | Box 115 \ 2 scan0449 | |
| 20-hour endurance test on 3 Layer Vandervell main bearings for the B.V. No.6 Unit. | 25th Apr 1939 | Box 115 \ 2 scan0450 | |
| Photograph displaying 3 Layer Vandervell Main Bearings. | 5th Apr 1939 | Box 115 \ 2 scan0451 | |
| Trial of Vandervell strip big end bearings and modifications to connecting rods. | 5th Apr 1939 | Box 115 \ 2 scan0452 | |
| Order for various engine bearings from Vandervells Ltd. | 25th Apr 1939 | Box 115 \ 2 scan0453 | |
| Attaching a photograph of Bentley V No.6 Big End Bearings after a 20-hour endurance test. | 27th Apr 1939 | Box 115 \ 2 scan0454 | |
| Photograph of big end bearings made from A.C.9 material. | 28th Apr 1939 | Box 115 \ 2 scan0455 | |
| Request to calculate the main bearing loads for two 4-cylinder engines, similar to a previous 6-cylinder calculation. | 28th Apr 1939 | Box 115 \ 2 scan0456 | |
| Letter to Vandervell Products Ltd. regarding tri-metal main bearings, thrust washer dimensions, and an order for parts for comparative trials. | 2nd May 1939 | Box 115 \ 2 scan0457 | |
| Page two of a letter to Vandervell Products Ltd. regarding spare parts for a car engine destined for abroad. | 2nd May 1939 | Box 115 \ 2 scan0458 | |
| Modification of crankcase housing bore dimensions for Vandervell main bearings. | 2nd May 1939 | Box 115 \ 2 scan0459 | |
| Letter from Vandervell Products Ltd. regarding the supply of Tri-metal and Babbitt bearings and Thrust Washers. | 3rd May 1939 | Box 115 \ 2 scan0460 | |
| Incomplete set of bearings from Vandervells and instructions for ordering additional parts. | 5th May 1939 | Box 115 \ 2 scan0461 | |
| Letter from supplier Vandervell Products Ltd. regarding the design and cost of rocker bushes for Bentley cars. | 5th May 1939 | Box 115 \ 2 scan0462 | |
| Page 2 of a letter from Vandervell Products Ltd. regarding the performance of 3 Layer Bearings. | 5th May 1939 | Box 115 \ 2 scan0463 | |
| Letter to Vandervell Products Ltd. regarding the return of twelve sample Rocker Bushes. | 2nd May 1939 | Box 115 \ 2 scan0464 | |
| Letter from Vandervell Products Ltd. regarding Rocker Bushes Part No.EB.4309 and the return of samples. | 29th Apr 1939 | Box 115 \ 2 scan0465 | |
| Copy letter from Vandervell Products Limited acknowledging a report on Rocker Bushes and confirming further samples will be prepared. | 26th Apr 1939 | Box 115 \ 2 scan0466 | |
| Letter to Vandervell Products Ltd. regarding a report on Rocker Bushes and requesting a further, error-free sample. | 24th Apr 1939 | Box 115 \ 2 scan0467 | |
| First proof inspection report on Bush - Rockers from Vandervell Products Ltd., detailing dimensional errors and burrs. | 22th Apr 1939 | Box 115 \ 2 scan0468 | |
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