| Description | Date | Identifier | |
| Informational leaflet for Metalastik Ltd.'s rubber-bonded-to-metal mounting units and their applications. | 1st Jan 1937 | Box 132 \ 1 scan0003 | |
| Informational document detailing Metalastik brand automotive components for silencing, seating, and engine vibration damping. | 1st Jan 1937 | Box 132 \ 1 scan0004 | |
| Promotional leaflet for Metalastik brand rubber suspension, mountings, and couplings for automotive and aircraft applications. | 16th Dec 1937 | Box 132 \ 1 scan0005 | |
| Letter from Metalastik Ltd regarding their patented crankshaft torsion damper and an offer to design a custom version. | 16th Dec 1937 | Box 132 \ 1 scan0006 | |
| Letter to Metalastik Limited regarding the design and testing of a crankshaft damper. | 17th Dec 1937 | Box 132 \ 1 scan0007 | |
| Comparison of crankshaft forging weights and costs between their engine and a Jaguar 3.5-litre engine. | 22th Dec 1937 | Box 132 \ 1 scan0008 | |
| Advertisement for The Ohio Crankshaft Co.'s TOCCO PROCESS for surface-hardening engine components. | 1st Jan 1937 | Box 132 \ 1 scan0009 | |
| Advertisement for the 1937 Packard Twelve, highlighting the use of TOCCO-hardened crankshafts. | 1st Jan 1937 | Box 132 \ 1 scan0010 | |
| Cost-effectiveness of hardness testing equipment for chassis crankshafts. | 31th Dec 1937 | Box 132 \ 1 scan0011 | |
| Diagram showing the amplitude of torsional oscillation due to harmonics of gas pressure torque at full throttle. | 18th Apr 1927 | Box 132 \ 1 scan0012 | |
| The development and properties of cast materials for crankshafts. | 18th Apr 1927 | Box 132 \ 1 scan0013 | |
| Torsion and impact tests on shafts and the investigation of various cast iron alloys for crankshafts. | 18th Apr 1927 | Box 132 \ 1 scan0014 | |
| Analysis and strength testing of cast iron specimens with varying Molybdenum and Chromium content. | 18th Apr 1927 | Box 132 \ 1 scan0015 | |
| Graph comparing the ultimate tensile strength of various cast iron alloys at high and ordinary temperatures. | 18th Apr 1927 | Box 132 \ 1 scan0016 | |
| The tensile strength, fatigue resistance, and composition of cast iron crankshaft material with Molybdenum additions. | 18th Apr 1927 | Box 132 \ 1 scan0017 | |
| Graph showing the results of Wöhler fatigue tests on a cast iron crankshaft web. | 18th Apr 1927 | Box 132 \ 1 scan0018 | |
| Comparison of the fatigue properties of cast iron and steel, followed by crankshaft experiment details. | 18th Apr 1927 | Box 132 \ 1 scan0019 | |
| The results of endurance tests for a standard steel shaft, a second steel shaft, and a cast iron crankshaft. | 18th Apr 1927 | Box 132 \ 1 scan0020 | |
| The performance and wear of a cast iron crankshaft and associated bearings after service in a petrol engine. | 18th Apr 1927 | Box 132 \ 1 scan0021 | |
| The condition of main and big end bearings and the results of testing alloy cast iron crankshafts in oil engines. | 18th Apr 1927 | Box 132 \ 1 scan0022 | |
| Report page detailing the development and testing of a high-strength, low-carbon cast iron alloy composition. | 18th Apr 1927 | Box 132 \ 1 scan0023 | |
| Heat treatment and tempering tests on metal test pieces, including stress and hardness results. | 18th Apr 1927 | Box 132 \ 1 scan0024 | |
| Drawing of a Wöhler test piece (N.P.L.) with dimensions and specifications. | 18th Apr 1927 | Box 132 \ 1 scan0025 | |
| Page from a report on Wohler Fatigue Tests, detailing results for various specimens and discussing material properties. | 5th Jan 1938 | Box 132 \ 1 scan0026 | |
| Alteration to the Wraith III and Bentley 111 crankshafts to prevent damage during assembly by reducing the rear bearing length. | 5th Jan 1938 | Box 132 \ 1 scan0027 | |
| Use of Packard type balance weights on Wraith III and Bentley 111 crankshafts. | 18th Jan 1938 | Box 132 \ 1 scan0028 | |
| Cost analysis memo comparing different crankshaft designs, including those from Oldsmobile, Jaguar, and Wraith. | 19th Jan 1938 | Box 132 \ 1 scan0029 | |
| The special washing treatment for cotton duck washers used in crankshaft dampers. | 24th Jan 1938 | Box 132 \ 1 scan0030 | |
| Production status and potential delays for crankshafts made from .4 carbon steel for the Wraith and Phantom III models. | 5th Feb 1938 | Box 132 \ 1 scan0031 | |
| Letter from British Belting & Asbestos Ltd discussing a difficulty with crank shaft damper discs, Part No. E.W.935. | 9th Feb 1938 | Box 132 \ 1 scan0032 | |
| Letter to a supplier discussing disappointing test results comparing new and old cotton duck washers. | 11th Feb 1938 | Box 132 \ 1 scan0033 | |
| Letter from British Belting & Asbestos Ltd. regarding discrepancies in friction values. | 14th Feb 1938 | Box 132 \ 1 scan0034 | |
| Transfer of a Summers Torsional Indicator from a Phantom III to a Wraith for crankshaft experiments. | 18th Feb 1938 | Box 132 \ 1 scan0035 | |
| Research on cast iron crankshafts, comparing fatigue strength and design. | 2nd Mar 1938 | Box 132 \ 1 scan0036 | |
| Urgent internal memo requesting instructions to adapt a crankshaft torsional indicator for a production engine. | 25th Mar 1938 | Box 132 \ 1 scan0037 | |
| Modifying the crankshaft finish to reduce costs and testing a newly finished crank. | 25th Mar 1938 | Box 132 \ 1 scan0038 | |
| Specifications for the heat treatment of three special crankshafts for Wraith and Phantom III models. | 29th Mar 1938 | Box 132 \ 1 scan0039 | |
| Correcting a previous communication about a special Phantom III crankshaft ordered for testing new material and balancing features. | 30th Mar 1938 | Box 132 \ 1 scan0040 | |
| Summary of running experience and condition of Hykro crankshafts in aero and chassis units. | 7th Apr 1938 | Box 132 \ 1 scan0041 | |
| Crankshaft road tests and material comparisons for chassis, aero, Merlin, and Exe engines. | 7th Apr 1938 | Box 132 \ 1 scan0042 | |
| The measurement of crankshaft deflections for Wraith and Bentley crankshafts. | 11th May 1938 | Box 132 \ 1 scan0043 | |
| Crankshaft torsional vibration tests using a Summer's indicator on Bentley II, Wraith III and Phantom III units. | 10th May 1938 | Box 132 \ 1 scan0044 | |
| Page of test results comparing crankshaft deflection and torsional periods for Wraith and Bentley II models. | 10th May 1938 | Box 132 \ 1 scan0045 | |
| Component performance at high speeds, observing deflections and peaks from diagrams. | 18th May 1935 | Box 132 \ 1 scan0046 | |
| Torsional vibration diagrams for a B.23 OHC unit during full throttle tests with a normal damper load. | 26th Apr 1939 | Box 132 \ 1 scan0047 | |
| Torsional vibration diagrams for the Wraith III No.1 unit during full throttle tests with a normal damper load. | 26th Apr 1939 | Box 132 \ 1 scan0048 | |
| Letter from Colin Macbeth proposing designs for flexible clutch centres and a crankshaft damper. | 10th May 1938 | Box 132 \ 1 scan0049 | |
| Blueprints for a Crankshaft Rear End Oil Retainer and an End Cover. | 1st Jun 1938 | Box 132 \ 1 scan0050 | |
| Requesting an investigation into the optimal firing order for a straight-eight engine to reduce crankshaft vibrations. | 17th Jun 1938 | Box 132 \ 1 scan0051 | |
| Letter from the Experimental Dept. to Ferodo Ltd. regarding a bush for a crankshaft damper. | 17th Jun 1938 | Box 132 \ 1 scan0052 | |
| Letter from Ferodo Limited regarding the supply of oiled and unoiled Ferobestos bushes. | 21th Jun 1938 | Box 132 \ 1 scan0053 | |
| Covering order be sent to Ferodos for two bushes. | 24th Jun 1938 | Box 132 \ 1 scan0054 | |
| Requesting the return of a Compressor Drive to Metalastik Ltd. | 1st Jul 1938 | Box 132 \ 1 scan0055 | |
| Letter to Metalastik Ltd. regarding the return of a loaned compressor drive and a request for a new rubber component. | 22th Jul 1938 | Box 132 \ 1 scan0056 | |
| Letter from Metalastik Ltd. regarding the design of a Crankshaft Dynamic Balancer for an engine. | 26th Jul 1938 | Box 132 \ 1 scan0057 | |
| Order for dynamo driving blocks with a specific durometer hardness. | 9th Aug 1938 | Box 132 \ 1 scan0058 | |
| Letter to Metalastik Ltd. requesting suggestions for a dynamo drive coupling with specific torque requirements. | 9th Aug 1938 | Box 132 \ 1 scan0059 | |
| Letter from Metalastik Ltd regarding a delayed letter about a Dynamo Coupling. | 18th Aug 1938 | Box 132 \ 1 scan0060 | |
| Letter from Metalastik Ltd acknowledging receipt of a letter and drawing EW 1438 concerning a Dynamo Coupling. | 12th Aug 1938 | Box 132 \ 1 scan0061 | |
| Letter from Metalastik Ltd regarding a flexible coupling and associated drawings. | 23th Jul 1938 | Box 132 \ 1 scan0062 | |
| Letter from Metalastik Ltd acknowledging receipt of a letter and drawing for a Dynamo Coupling. | 12th Aug 1938 | Box 132 \ 1 scan0063 | |
| Article on the use of rubber bonded to metal for anti-vibration units and other purposes in oil engine plant. | 1st Oct 1937 | Box 132 \ 1 scan0064 | |
| The Merlin crankshaft bending test, with comparisons to the Wraith crankshaft. | 6th Oct 1938 | Box 132 \ 1 scan0065 | |
| Cover memo dispatching copies of documents related to Merlin crankshaft bending tests. | 13th Oct 1938 | Box 132 \ 1 scan0066 | |
| Graphs showing the results of a bending test on a Merlin engine crankshaft under various load conditions. | 29th Sep 1938 | Box 132 \ 1 scan0067 | |
| Diagrams from a Merlin crankshaft bending test showing deflections at various journals. | 29th Sep 1938 | Box 132 \ 1 scan0068 | |
| Diagrams showing the results of a Merlin crankshaft bending test. | 29th Sep 1938 | Box 132 \ 1 scan0069 | |
| Series of graphs showing the results of a Merlin crankshaft bending test at varying angles. | 29th Sep 1938 | Box 132 \ 1 scan0070 | |
| Blueprint diagram illustrating a Merlin crankshaft bending test. | 3rd Oct 1938 | Box 132 \ 1 scan0071 | |
| The results of a Merlin crankshaft bending test. | 29th Sep 1938 | Box 132 \ 1 scan0072 | |
| Data table showing the results of a Merlin crankshaft bending test, detailing journal deflections under varying loads and directions. | 3rd Oct 1938 | Box 132 \ 1 scan0073 | |
| Graph showing the results of a Merlin crankshaft bending test. | 29th Sep 1938 | Box 132 \ 1 scan0074 | |
| Blueprint showing diagrams for a Merlin crankshaft bending test. | 29th Sep 1938 | Box 132 \ 1 scan0075 | |
| Blueprint showing the Merlin crankshaft bending test results and deflections at various journals. | 29th Sep 1938 | Box 132 \ 1 scan0076 | |
| Series of six graphs from a Merlin crankshaft bending test, plotting load against journal deflection at various angles. | 29th Sep 1938 | Box 132 \ 1 scan0077 | |
| Blueprint detailing a bending test for a Merlin engine crankshaft. | 3rd Oct 1938 | Box 132 \ 1 scan0078 | |
| Test data from a Merlin engine crankshaft bending test showing journal deflections under various loads. | 29th Sep 1938 | Box 132 \ 1 scan0079 | |
| Merlin crankshaft bending test results showing journal deflections under varying loads and directions. | 3rd Oct 1938 | Box 132 \ 1 scan0080 | |
| Letter to Metalastik Ltd. regarding the design and quotation for a flexible dynamo coupling. | 24th Oct 1938 | Box 132 \ 1 scan0081 | |
| Letter from Metalastik Ltd in response to an enquiry for a flexible dynamo coupling. | 25th Oct 1938 | Box 132 \ 1 scan0082 | |
| Letter to Metalastik Ltd. approving a quotation for sample dynamo couplings based on drawing SCD.940. | 27th Oct 1938 | Box 132 \ 1 scan0083 | |
| Proposal for simplified crankshaft oil drilling for Wraith III and Bentley 60 models. | 27th Oct 1938 | Box 132 \ 1 scan0084 | |
| Proposal to test an alternative single start shallow oil retaining thread on a future crankshaft. | 27th Oct 1938 | Box 132 \ 1 scan0085 | |
| Letter from Metalastik Ltd confirming the preparation of three sample Flexible Dynamo Couplings. | 28th Oct 1938 | Box 132 \ 1 scan0086 | |
| Letter to Metalastik Ltd. enclosing prints EXS.1144, EXS.1145, and SCD.940. | 31th Oct 1938 | Box 132 \ 1 scan0087 | |
| Letter from Metalastik Ltd acknowledging receipt of prints for a flexible dynamo coupling. | 2nd Nov 1938 | Box 132 \ 1 scan0088 | |
| Preliminary results of an investigation into the 'Packard System' of crankshaft balancing. | 2nd Nov 1938 | Box 132 \ 1 scan0089 | |
| Report page investigating crank units and bending theory, comparing different balance mass systems. | 2nd Nov 1938 | Box 132 \ 1 scan0090 | |
| Letter to Metalastik Ltd. requesting a delivery date for sample couplings being produced to drawing SCD.940. | 11th Nov 1938 | Box 132 \ 1 scan0091 | |
| Letter from Metalastik Ltd confirming the dispatch of Couplings SCD.940. | 12th Nov 1938 | Box 132 \ 1 scan0092 | |
| Letter from Metalastik Ltd confirming the dispatch of 3 flexible couplings and enclosing drawing 20045. | 17th Nov 1938 | Box 132 \ 1 scan0093 | |
| Graph plotting torque versus angular deflection for a dynamo flexible coupling under different conditions. | 17th Nov 1938 | Box 132 \ 1 scan0094 | |
| Official order for 3 sample dynamo couplings from Metalastik Ltd. for trial on a Wraith (52439). | 21th Nov 1938 | Box 132 \ 1 scan0095 | |
| Letter to Metalastik Ltd. regarding the manufacture of a crankshaft vibration damper. | 1st Dec 1938 | Box 132 \ 1 scan0096 | |
| Letter to Vandervell Products Ltd. regarding an enquiry for a bush for a crankshaft damper, enclosing drawing EB.3973. | 1st Dec 1938 | Box 132 \ 1 scan0097 | |
| Letter from Vandervell Products Ltd. regarding a bush for a crankshaft damper. | 3rd Dec 1938 | Box 132 \ 1 scan0098 | |
| Specification sheet for a damper flywheel bush. | 2nd Dec 1938 | Box 132 \ 1 scan0099 | |
| Issues with the harmonic damper on B.60 & B.80 crankshafts. | 6th Dec 1938 | Box 132 \ 1 scan0100 | |
| Crankshaft design possibilities and camwheel material for the B.60 and B.80 models. | 13th Dec 1938 | Box 132 \ 1 scan0101 | |
| Requesting the production of 4 more sets of parts for a Dynamo Coupling. | 14th Jan 1939 | Box 132 \ 1 scan0102 | |
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