| Description | Date | Identifier | |
| Combining shock damper loads at right angles. | 18th Jun 1937 | Box 154a \ 4 scan0044 | |
| Blocking of front suspension vent plugs for Phantom III and Wraith chassis models. | 18th Jun 1937 | Box 154a \ 4 scan0045 | |
| Complaint to the English Steel Corporation regarding incorrect poundage and etching on front wheel springs. | 15th Sep 1937 | Box 154a \ 4 scan0046 | |
| Proposal for an accurate load testing apparatus for coil springs. | 15th Sep 1937 | Box 154a \ 4 scan0047 | |
| Using mild steel for front suspension parts, comparing them to Packard and Bentley components. | 23th Nov 1937 | Box 154a \ 4 scan0048 | |
| The collection of suspension data to reproduce the Packard spring rate on the Wraith model. | 7th Jan 1938 | Box 154a \ 4 scan0049 | |
| Comparison of suspension spring and roll ratings for various vehicle models. | 7th Jan 1938 | Box 154a \ 4 scan0050 | |
| Graph showing load versus deflection for the Wraith front wheel. | 7th Jan 1938 | Box 154a \ 4 scan0051 | |
| Graph showing Oldsmobile front wheel deflection against load. | 7th Jan 1938 | Box 154a \ 4 scan0052 | |
| Graph comparing the front wheel deflection curves of the B III model and a Packard vehicle under load. | 19th Jan 1938 | Box 154a \ 4 scan0053 | |
| High cost of road springs and proposing comparative testing against Packard and Austin springs. | 19th Jan 1938 | Box 154a \ 4 scan0054 | |
| Specification memo regarding the 'Shore Durometer' hardness for rubber parts, including the Wraith front suspension buffer. | 25th Jan 1938 | Box 154a \ 4 scan0055 | |
| Examination of chassis road springs for decarburisation after bumper testing. | 3rd Feb 1938 | Box 154a \ 4 scan0056 | |
| Analysis of spring plate materials, including hardness tests, chemical composition, and the effects of decarburisation. | 9th Dec 1937 | Box 154a \ 4 scan0057 | |
| Hardness test results on American Spring material after various cyanide and heat treatments. | 9th Dec 1937 | Box 154a \ 4 scan0058 | |
| The results of cyanide heat treatment and hardness testing on steel, including conclusions. | 7th Dec 1937 | Box 154a \ 4 scan0059 | |
| Sketch showing the results of decarbonisation tests on various road springs. | 7th Dec 1937 | Box 154a \ 4 scan0060 | |
| Graph showing the effect of cyanide treatment on the decarburised surface of American Silico-Manganese road spring plates. | 7th Dec 1937 | Box 154a \ 4 scan0061 | |
| Laboratory report detailing fractures in Silico-manganese road-spring main-plates following a bumper test. | 7th Dec 1937 | Box 154a \ 4 scan0062 | |
| Laboratory report showing micrographs of the transverse sections of three different springs, noting the levels of decarburisation on their upper surfaces. | 7th Dec 1937 | Box 154a \ 4 scan0063 | |
| Laboratory report with two microphotographs comparing the surfaces of Woodhead's and Firth's springs. | 7th Dec 1937 | Box 154a \ 4 scan0064 | |
| Laboratory report with photomicrographs comparing the surface structure of an American spring and a Firth's spring. | 15th Feb 1938 | Box 154a \ 4 scan0065 | |
| Front shock damper performance, oil displacement figures, and potential improvements for the Bentley III & 50 models. | 15th Feb 1938 | Box 154a \ 4 scan0066 | |
| Page discussing the heating effect on oil in shock dampers, with reference to the B.III front damper and Phantom III. | 15th Feb 1938 | Box 154a \ 4 scan0067 | |
| Suggesting a change in material for anti-roll rods to achieve a cost saving of 2/2d per chassis. | 14th Mar 1938 | Box 154a \ 4 scan0068 | |
| Scheme for an alternative front eye rear spring lubrication for Bentley 111 and 50 models. | 24th May 1938 | Box 154a \ 4 scan0069 | |
| Alternative spring lubrication design for the rear spring front eye of a Bentley III & 50. | 23th May 1938 | Box 154a \ 4 scan0070 | |
| Parts list and instructions for the spring suspension mechanism on Bentley 111 and 50 models. | 14th Jun 1938 | Box 154a \ 4 scan0071 | |
| Parts list and instructions for the Spring Suspension Mechanism of Bentley 111 and 50 models. | 14th Jun 1938 | Box 154a \ 4 scan0072 | |
| Particulars for the front springs of the B.50 and Silver Wraith models. | 15th Jun 1938 | Box 154a \ 4 scan0073 | |
| Specification table for static deflection springs for the B.50 and 'Silver' Wraith models. | 22th Jun 1938 | Box 154a \ 4 scan0074 | |
| Tasks related to shock damper testing and modification on various chassis. | 22th Jun 1938 | Box 154a \ 4 scan0075 | |
| List of ten engineering tasks related to vehicle springs, chassis, and components. | 22th Jun 1938 | Box 154a \ 4 scan0076 | |
| Design and fitting of a front anti-roll rod for Bentley 111, 3 and 50 models. | 30th Jun 1938 | Box 154a \ 4 scan0077 | |
| Scheme for a modified rear spring mounting for Bentley 3 and 50 models. | 9th Jul 1938 | Box 154a \ 4 scan0078 | |
| Scheme for a modification to the front anti-roll rod bearing for Bentley 111 and 50 models. | 12th Jul 1938 | Box 154a \ 4 scan0079 | |
| Blueprint showing modifications to the anti-roll rod bearings for models BIII & 50. | 12th Jul 1938 | Box 154a \ 4 scan0080 | |
| Notification of a reduction in taper pins for spring suspension brackets on B.111 and B.50 chassis. | 13th Jul 1938 | Box 154a \ 4 scan0081 | |
| Order for 12 buffers from the Firestone Rubber Co. | 23th Aug 1938 | Box 154a \ 4 scan0082 | |
| Scheme for a locating screw for threaded bushes on rear springs for Bentley 3, 50 and Wraith 80 models. | 26th Aug 1938 | Box 154a \ 4 scan0083 | |
| Modified lower triangle thrust stay for the front suspension on Bentley 111. 50 and Wraith 80 models. | 8th Sep 1938 | Box 154a \ 4 scan0084 | |
| Requesting modifications and new parts for the 'Wraith II' roll rods to reduce roll stiffness. | 4th Oct 1938 | Box 154a \ 4 scan0085 | |
| Proposal to modify the front suspension coil springs for the Wraith III and Phantom 111 models. | 17th Oct 1938 | Box 154a \ 4 scan0086 | |
| List of work and tests required for various suspension mechanism components. | 13th Dec 1938 | Box 154a \ 4 scan0087 | |
| Internal memorandum regarding a 'bump' test on a spot-welded Front Cross Member Assembly. | 20th Dec 1938 | Box 154a \ 4 scan0088 | |
| Work to be undertaken on suspension and chassis components. | 5th Jan 1939 | Box 154a \ 4 scan0089 | |
| Technical memo detailing work on suspension components and noise testing procedures. | 5th Jan 1939 | Box 154a \ 4 scan0090 | |
| Component tests for noise, engine mounts, suspension, and other parts, including for the Wraith II model. | 5th Jan 1939 | Box 154a \ 4 scan0091 | |
| Lubrication, shock damper tests, and design modifications for various car models. | 5th Jan 1939 | Box 154a \ 4 scan0092 | |
| Recommendations for shock damper settings, brakes, and servo systems for production. | 5th Jan 1939 | Box 154a \ 4 scan0093 | |
| The road spring characteristics and weights of experimental cars, including the 1.B.30 and Buick Century. | 1st Mar 1939 | Box 154a \ 4 scan0094 | |
| Specification sheet detailing vehicle spring rates, wheel movements, and loads. | 1st Mar 1939 | Box 154a \ 4 scan0095 | |
| Suspension system data including unsprung weights, spring loads, rates, and wheel movements. | 1st Mar 1939 | Box 154a \ 4 scan0096 | |
| Specification sheet detailing loads on wheels and springs, along with spring rate data. | 1st Mar 1939 | Box 154a \ 4 scan0097 | |
| Data sheet detailing wheel movements and spring loads for a Buick Century. | 1st Mar 1939 | Box 154a \ 4 scan0098 | |
| Specification sheet detailing spring rates, roll ratings, and wheel movements. | 1st Mar 1939 | Box 154a \ 4 scan0099 | |
| Request to perform a poundage test on a coil spring with theoretical deflection data. | 2nd Mar 1939 | Box 154a \ 4 scan0100 | |
| Progress report on measuring and reducing low-frequency suspension noise and vibration in Bentley cars. | 15th Mar 1939 | Box 154a \ 4 scan0101 | |
| Investigation into low frequency noise and vibration on Bentley cars with independent front wheel suspension. | 15th Mar 1939 | Box 154a \ 4 scan0102 | |
| Analysis of vibration and noise levels resulting from six different front suspension configurations on a Bentley. | 15th Mar 1939 | Box 154a \ 4 scan0103 | |
| Report page detailing the conclusions and further investigation points from vehicle noise and vibration testing. | 15th Mar 1939 | Box 154a \ 4 scan0104 | |
| Vehicle noise levels, suggesting improvements for sound measurement and reduction. | 4th Mar 1939 | Box 154a \ 4 scan0105 | |
| Graph showing windscreen vibration on a Bentley 1B50 due to front wheel impact under various conditions. | 4th Mar 1939 | Box 154a \ 4 scan0106 | |
| Blueprint graph comparing windscreen vibrations on Bentley cars due to front wheel impact under different suspension configurations. | 4th Mar 1939 | Box 154a \ 4 scan0107 | |
| Cross steering lever for model B.V. with increased tyre clearance and caster. | 22th Mar 1939 | Box 154a \ 4 scan0108 | |
| Analysis of the front suspension spring rates for the B.V and B.50 models, investigating discrepancies. | 30th Mar 1939 | Box 154a \ 4 scan0109 | |
| Analysis of suspension linkage forces, spring rates, and the bending effects of coil springs. | 30th Mar 1939 | Box 154a \ 4 scan0110 | |
| Calculations for coil spring ratings and wheel ratings, with notes on rubber bush deterioration. | 30th Mar 1939 | Box 154a \ 4 scan0111 | |
| Blueprint graph comparing measured versus calculated spring rates for a front suspension system. | 31th Mar 1939 | Box 154a \ 4 scan0112 | |
| Request to investigate the cause of failure for three broken main leaves from a Bentley Bumper Chassis's rear road springs. | 31th Mar 1939 | Box 154a \ 4 scan0113 | |
| Spring failures and requesting an analysis of stress on the top leaf. | 13th May 1939 | Box 154a \ 4 scan0114 | |
| Front suspension rationalised programme and modifications to yoke pieces and stub axles. | 6th Jun 1939 | Box 154a \ 4 scan0115 | |
| Request to design softer front springs with associated weight and load calculations for models W.80 and B.80. | 10th Jun 1939 | Box 154a \ 4 scan0116 | |
| Requesting that springs are detailed when drawn and one pair for each type is ordered. | 16th Jun 1939 | Box 154a \ 4 scan0117 | |
| Confidential memo requesting recommendations for body and springing on Bentley V chassis for the Paris and Earls Court Motor Shows. | 24th Jun 1939 | Box 154a \ 4 scan0118 | |
| Request for recommendations on the springing for Bentley V Chassis show cars with Corniche bodies for the Paris and Earls Court Motor Shows. | 29th Jun 1939 | Box 154a \ 4 scan0119 | |
| Spring deflection specifications for Bentley V models for the Paris & Earl's Court shows. | 1st Jul 1939 | Box 154a \ 4 scan0120 | |
| Advising the adoption of coil springs over leaf springs in future suspension designs. | 3rd Jul 1939 | Box 154a \ 4 scan0121 | |
| The performance and alternatives for interleaving materials in vehicle suspension. | 22th Jan 1940 | Box 154a \ 4 scan0122 | |
| List of three new types of interleaving material currently on order. | 22th Jan 1940 | Box 154a \ 4 scan0123 | |
| Sketch of a rear suspension system. | 24th Jan 1940 | Box 154a \ 4 scan0124 | |
| Letter to Ferodo Ltd. requesting a quote for four sets of interleaving material with specific dimensions for springs. | 24th Jan 1940 | Box 154a \ 4 scan0125 | |
| Scheme for an aluminium alloy die-cast torque arm for the front suspension of Senior Range models. | 26th Jan 1940 | Box 154a \ 4 scan0126 | |
| Alteration note correcting the free length of a 'Spring - Sliding Piece' due to a drawing office error. | 30th Jan 1940 | Box 154a \ 4 scan0127 | |
| Transition in chassis road spring suppliers and the need for standardized documentation. | 1st Feb 1940 | Box 154a \ 4 scan0128 | |
| Requesting instructions for a set of tin gaiters to be made for two springs. | 2nd Feb 1940 | Box 154a \ 4 scan0129 | |
| Minutes of a discussion on suspension development for the Senior and Junior range vehicles. | 5th Feb 1940 | Box 154a \ 4 scan0130 | |
| Request to produce drawings for low rating coil springs for a bent front pan. | 2nd Mar 1940 | Box 154a \ 4 scan0131 | |
| Low load and rating springs for the Senior Range bent front pan. | 12th Mar 1940 | Box 154a \ 4 scan0132 | |
| Table comparing various specifications for different normal spring loads. | 12th Mar 1940 | Box 154a \ 4 scan0133 | |
| Letter to Stainless Spinning Works requesting a progress update on an order for special spring plates. | 8th Aug 1940 | Box 154a \ 4 scan0134 | |
| Requesting the despatch of attached springs to Messrs. Rubery Owen & Co. for the fitting of tin gaiters. | 4th Dec 1940 | Box 154a \ 4 scan0135 | |
| Letter to Messrs. Rubery Owen & Co. requesting an estimate for the manufacture of tin gaiters for leaf springs. | 5th Dec 1940 | Box 154a \ 4 scan0136 | |
| Letter to British Belting & Asbestos, Ltd. acknowledging receipt of 'Scandilex' Belting, confirming it is under test and requesting a further supply. | 5th Dec 1940 | Box 154a \ 4 scan0137 | |
| Request to place official orders for belting and rubber buffers with two suppliers. | 5th Dec 1940 | Box 154a \ 4 scan0138 | |
| Letter to the British Tyre & Rubber Co. regarding the moulding of rubber buffers. | 5th Dec 1940 | Box 154a \ 4 scan0139 | |
| Letter to Messrs. Rubery Owen & Co. chasing up a delivery of leaf springs and a request to fit them with tin gaiters. | 1st Jan 1941 | Box 154a \ 4 scan0140 | |
| Letter to Toledo Woodhead Springs Ltd. with specifications for four sample springs required for testing. | 21th Jan 1941 | Box 154a \ 4 scan0141 | |
| Letter concluding a request for the production of sample springs. | 21th Jan 1941 | Box 154a \ 4 scan0142 | |
| Inquiry to Spaulding Ltd. regarding the supply of thicker Spauldite strips for spring interleaving. | 25th Jan 1941 | Box 154a \ 4 scan0143 | |
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