| Description | Date | Identifier | |
| Urging careful discussion before abandoning the company's own alloys in favour of proprietary or inferior materials. | 26th Nov 1936 | Box 87 \ 3 scan0067 | |
| Cover memo forwarding copies of documents regarding proprietary articles. | 28th Nov 1936 | Box 87 \ 3 scan0068 | |
| Copies of documents relating to Proprietary Articles. | 27th Nov 1936 | Box 87 \ 3 scan0069 | |
| Issues with clutches and the cost to bring them up to requirements. | 24th Nov 1936 | Box 87 \ 3 scan0070 | |
| Cost-benefit analysis of sourcing propeller shafts from Hardy Spicers versus in-house production. | 24th Nov 1936 | Box 87 \ 3 scan0071 | |
| Laboratory report detailing the material analysis and heat treatment of a Hardy Spicer Propeller Shaft. | 27th Nov 1936 | Box 87 \ 3 scan0072 | |
| Requesting copies of previous memos on proprietary articles and arranging a future discussion. | 27th Nov 1936 | Box 87 \ 3 scan0073 | |
| Benefits of fitting a propeller shaft damper to Bentley cars and plans to reintroduce a lighter version. | 2nd Dec 1936 | Box 87 \ 3 scan0074 | |
| Standardisation of the propeller shaft damper for the Bentley chassis. | 4th Dec 1936 | Box 87 \ 3 scan0075 | |
| Instruction to re-introduce the Propellor Shaft Damper on the 101st 'J' series Bentley Chassis. | 9th Dec 1936 | Box 87 \ 3 scan0076 | |
| Introduction of a propeller shaft damper on a Bentley 'J' Series chassis. | 9th Dec 1936 | Box 87 \ 3 scan0077 | |
| Cost analysis and updates on proprietary articles for 25/30 and Bentley models, including details on price increases and production issues. | 14th Dec 1936 | Box 87 \ 3 scan0078 | |
| Wraith type propeller shaft on a Bentley, requesting a drawing for a re-standardised front coupling. | 17th Dec 1936 | Box 87 \ 3 scan0079 | |
| Confirming the composition of propeller shaft dampers for France. | 17th Dec 1936 | Box 87 \ 3 scan0080 | |
| The introduction of a propeller shaft damper on a Bentley 'J' Series chassis. | 21th Dec 1936 | Box 87 \ 3 scan0081 | |
| Fitting propeller shaft dampers on Bentley production chassis. | 30th Dec 1936 | Box 87 \ 3 scan0082 | |
| The fitting of Propeller Shaft Dampers to Bentley chassis. | 1st Jan 1937 | Box 87 \ 3 scan0083 | |
| Blueprints for alternative Damper Flywheels for the Bentley II and 25/30-HP chassis propeller shaft. | 12th Jan 1937 | Box 87 \ 3 scan0084 | |
| From Sg. to Rm. regarding a pending Depot Instruction Sheet for a juddering clutch on the 4¼-litre Bentley. | 8th Jan 1937 | Box 87 \ 3 scan0085 | |
| Responding to a query about transmission rattles in 25/30.HP. & Bentley models. | 11th Jan 1937 | Box 87 \ 3 scan0086 | |
| Lubrication leakage issues in a propeller shaft sliding joint and proposing a test solution. | 14th Jan 1937 | Box 87 \ 3 scan0087 | |
| Inspection of a Bentley Hardy Spicer propeller shaft after 15,000 miles of use. | 9th Feb 1937 | Box 87 \ 3 scan0088 | |
| Specifications and supply of a Bentley propeller shaft from Hardy-Spicer. | 2nd Apr 1937 | Box 87 \ 3 scan0089 | |
| Instruction to retrospectively fit Propeller Shaft Dampers on all 4¼-litre Bentley cars. | 5th Jun 1937 | Box 87 \ 3 scan0090 | |
| Trial of a propeller shaft damper on a Bentley, inspired by a Studebaker part. | 7th Jun 1937 | Box 87 \ 3 scan0091 | |
| Pitted spindle from a Bentley propellor shaft joint, attributing the fault to soft core and case hardening issues. | 10th Aug 1937 | Box 87 \ 3 scan0092 | |
| Micro-examination report on the hardness and case thickness of a Bentley Universal Joint Pin. | 20th Aug 1937 | Box 87 \ 3 scan0093 | |
| Laboratory report showing transverse and longitudinal sections of a needle roller race from a universal joint pin, etched to reveal the case depth. | 16th Aug 1937 | Box 87 \ 3 scan0094 | |
| Laboratory report showing a photograph of a universal joint pin after etching on the needle race. | 16th Aug 1937 | Box 87 \ 3 scan0095 | |
| Modifications to the Propeller Shaft Universal Joint for a Bentley. | 23th Aug 1937 | Box 87 \ 3 scan0096 | |
| Alteration notice for a Bentley chassis propeller shaft, involving the replacement of a part to prevent imbalance. | 11th Jan 1938 | Box 87 \ 3 scan0097 | |
| Confirming that the fitting of propeller shaft dampers on the 4 1/4 litre Bentley should not be a retrospective modification. | 7th Jul 1938 | Box 87 \ 3 scan0098 | |
| Listing prints for metal parts required for a Bentley propeller shaft centre bearing. | 3rd Aug 1939 | Box 87 \ 3 scan0099 | |
| Letter to Messrs. Hardy Spicer & Co. regarding the balancing of two divided propeller shafts from Bentley chassis. | 19th Sep 1940 | Box 87 \ 3 scan0100 | |
| Requesting an original 3 1/4 litre Bentley piston from the London Depot for Derby Works. | 2nd Sep 1940 | Box 87 \ 3 scan0101 | |
| Correspondence regarding the return of an old Bentley piston, pattern EB/1299, to Derby. | 10th Sep 1940 | Box 87 \ 3 scan0102 | |
| New drawing for rear axle dampers on the Bensport Series 1, cancelling a previous drawing and detailing consequent modifications. | 24th Feb 1933 | Box 87 \ 3 scan0103 | |
| Modifications to the rear axle damper mountings and the Bensport Body, with reference to blueprint LeC.3387. | 24th Feb 1933 | Box 87 \ 3 scan0104 | |
| Specification for modifying Bentley 2 shock dampers for the front and rear. | 31th May 1933 | Box 87 \ 3 scan0105 | |
| Recommending settings for hydraulic damper loads on a Bentley vehicle. | 9th Sep 1933 | Box 87 \ 3 scan0106 | |
| Instructions for shock damper settings and parts on the Bentley 3½ litre chassis. | 12th Sep 1933 | Box 87 \ 3 scan0107 | |
| Settings for Bentley shock dampers on two production chassis. | 19th Sep 1933 | Box 87 \ 3 scan0108 | |
| Proposed individual hand control for Bentley dampers, including specifications and material suggestions. | 10th Jan 1934 | Box 87 \ 3 scan0109 | |
| Proposing an improved front damper fixing for Bentley cars. | 15th Feb 1934 | Box 87 \ 3 scan0110 | |
| Scheme for applying metal mud excluders to Bentley rear shock damper ball joints. | 6th Mar 1934 | Box 87 \ 3 scan0111 | |
| Performance of adjustable shock absorbers on a Bentley test car. | 9th Mar 1934 | Box 87 \ 3 scan0112 | |
| The need for refinements, specifically controllable dampers, to maintain Bentley sales. | 9th Mar 1934 | Box 87 \ 3 scan0113 | |
| Different types of shock absorbers for Bentley cars. | 13th Mar 1934 | Box 87 \ 3 scan0114 | |
| Introduction of controllable shock dampers on the Bentley 'C' Series and the location of their operating lever. | 13th Mar 1934 | Box 87 \ 3 scan0115 | |
| Performance of different types of shock absorbers on experimental cars, including the Bentley. | 14th Mar 1934 | Box 87 \ 3 scan0116 | |
| Schemes for controllable shock absorbers on Bentley cars and the introduction of a foot switch. | 15th Mar 1934 | Box 87 \ 3 scan0117 | |
| Complaint case regarding Bentley Chassis No. B.145-AE and an owner's request for auxiliary dampers. | 26th Apr 1934 | Box 87 \ 3 scan0118 | |
| Criticism of the suspension on a 3.5 Litre Bentley Chassis in Belgium and requesting recommendations for shock absorber settings. | 30th Apr 1934 | Box 87 \ 3 scan0119 | |
| Letter to a customer regarding the suitability of standard Bentley shock absorbers for use on the Continent. | 2nd May 1934 | Box 87 \ 3 scan0120 | |
| Modifications to the rear damper brackets for a Bentley vehicle. | 8th May 1934 | Box 87 \ 3 scan0121 | |
| Fitment of a Bentley rear damper fixing to a Bumper Chassis for E.R. Hall's car. | 2nd Jun 1934 | Box 87 \ 3 scan0122 | |
| Request to supply a pair of front dampers for Bentley Chassis 15-AE and return the old ones for examination. | 29th May 1934 | Box 87 \ 3 scan0123 | |
| The transfer of 4 shock dampers with 3 position control from car 4-B-IV to the Repair Department. | 29th May 1934 | Box 87 \ 3 scan0124 | |
| Request to fit controllable dampers to a 1-B-IV Saloon for a demonstration. | 25th Jun 1934 | Box 87 \ 3 scan0125 | |
| Revised, cost-reducing scheme for the Bentley rear damper suspension. | 29th Jun 1934 | Box 87 \ 3 scan0126 | |
| Specifying the settings for Bentley controllable dampers. | 6th Jul 1934 | Box 87 \ 3 scan0127 | |
| Combination of friction and hydraulic shock dampers for vehicles. | 2nd Aug 1934 | Box 87 \ 3 scan0128 | |
| Standardisation of parts for governor controlled shock dampers. | 21th Sep 1934 | Box 87 \ 3 scan0129 | |
| Estimated cost for extra tooling and equipment for the 'C' series chassis production. | 3rd Sep 1934 | Box 87 \ 3 scan0130 | |
| The settings for the 25 HP and Bentley Shock Damper Governor Unit. | 5th Nov 1934 | Box 87 \ 3 scan0131 | |
| Table of pressure readings for 25 HP production governor units. | 26th Nov 1934 | Box 87 \ 3 scan0132 | |
| Inquiring about damping ratios and potential issues with the Bentley Shock Damper Control. | 26th Nov 1934 | Box 87 \ 3 scan0133 | |
| Load settings for the Bentley Shock Damper Control. | 29th Nov 1934 | Box 87 \ 3 scan0134 | |
| Ordering flexible connections from one supplier while holding off on another for the Bentley 'E' Series chassis. | 22th Jan 1935 | Box 87 \ 3 scan0135 | |
| Recommendation to proceed with an order for flexible connections for shock absorbers from an existing supplier. | 25th Jan 1935 | Box 87 \ 3 scan0136 | |
| The ride control governor pressures for the Bentley and 20/25 HP models. | 2nd Mar 1935 | Box 87 \ 3 scan0137 | |
| Brochure for the 3½-Litre Bentley 'The Silent Sports Car' and a reprinted article from 'The Motor' on its driver-controlled suspension. | 1st Feb 1935 | Box 87 \ 3 scan0138 | |
| Article detailing a new system where hydraulic shock absorber settings are varied by vehicle speed and manual control. | 19th Feb 1935 | Box 87 \ 3 scan0139 | |
| Query regarding moving the front shock absorber connections to the axle ends on a Bentley and whether this requires new axle dies. | 25th Apr 1935 | Box 87 \ 3 scan0140 | |
| Recommendation to increase the bolt size for the Bentley rear shock damper connecting tube following a component failure. | 1st May 1935 | Box 87 \ 3 scan0141 | |
| Design of Bentley shock absorbers and the combination of hydraulic and dry friction. | 1st May 1935 | Box 87 \ 3 scan0142 | |
| The practicality of using a hydraulic damper from the Phantom on a lighter car, and considerations for a compact design. | 1st May 1935 | Box 87 \ 3 scan0143 | |
| Request to modify the part numbers for existing tubes and valves. | 16th May 1935 | Box 87 \ 3 scan0144 | |
| Test results and design analysis of a Bentley and Draper shock absorber. | 24th May 1935 | Box 87 \ 3 scan0145 | |
| Standardisation of parts for a modification to the governor valve in the shock damper governor unit. | 24th May 1935 | Box 87 \ 3 scan0146 | |
| Cost estimate for jigs, tools, and equipment for the 'G' series chassis production. | 28th Jun 1935 | Box 87 \ 3 scan0147 | |
| Request to connect the front shock dampers to the axle with connecting tubes. | 1st Oct 1935 | Box 87 \ 3 scan0148 | |
| The trial of Autolock Dampers on 25 HP and Bentley chassis. | 10th Dec 1935 | Box 87 \ 3 scan0149 | |
| Requesting Autolock dampers for 25 HP and Bentley chassis, specifying the need for 3 point fixings. | 14th Dec 1935 | Box 87 \ 3 scan0150 | |
| Requesting a summary of complaints regarding rear shock absorber knocks. | 17th Mar 1936 | Box 87 \ 3 scan0151 | |
| Acknowledging receipt of information about shock absorber knocks and requesting to be notified of any future issues. | 25th Mar 1936 | Box 87 \ 3 scan0152 | |
| Causes of Bentley rear shock damper knocks and related component issues. | 25th Mar 1936 | Box 87 \ 3 scan0153 | |
| Complaints of knocking sounds from hydraulic shock dampers, specifically on Bentley rear dampers. | 12th Mar 1936 | Box 87 \ 3 scan0154 | |
| List of cars that have had new bushes fitted to their shock damper shafts, with additional handwritten notes. | 28th Jan 1936 | Box 87 \ 3 scan0155 | |
| Analysis of shock absorber knocks recorded for quarterly complaint purposes. | 20th Mar 1936 | Box 87 \ 3 scan0156 | |
| Analysing customer complaints of 'knocks' and investigating potential causes, including loose front shock dampers and frame bolts. | 15th Apr 1936 | Box 87 \ 3 scan0157 | |
| The costs and parts required for modifying the governor control to dampers. | 15th Apr 1936 | Box 87 \ 3 scan0158 | |
| Cost-saving proposal comparing the governor control pipes on the 25/30 HP and Bentley chassis. | 8th Apr 1936 | Box 87 \ 3 scan0159 | |
| Standardisation of a coiled copper pipe for the governor control to dampers on a Bentley chassis to achieve a cost saving. | 3rd Jul 1936 | Box 87 \ 3 scan0160 | |
| Standardisation of coiled copper pipe for the governor control to dampers on a Bentley chassis. | 25th Sep 1936 | Box 87 \ 3 scan0161 | |
| Querying the increased cost of the Bentley improved axle control compared to what was previously stated. | 26th Nov 1936 | Box 87 \ 3 scan0162 | |
| Standardisation of a copper pipe from the shock damper governor unit to the frame, for cost reduction. | 18th Dec 1936 | Box 87 \ 3 scan0163 | |
| Cost of new tools and the production start for the 'L' series chassis. | 1st Oct 1936 | Box 87 \ 3 scan0164 | |
| Customer complaints about harsh riding on Bentley chassis due to high initial shock damper loading. | 22th Feb 1937 | Box 87 \ 3 scan0165 | |
| Increasing the initial shock damper poundage for Bentley cars destined for France. | 23th Feb 1937 | Box 87 \ 3 scan0166 | |
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