| Description | Date | Identifier | |
| Test results showing the deflection of a strengthened Bentley Slipper Flywheel Friction Plate under various loads. | 12th Sep 1934 | Box 85 \ 2 scan0113 | |
| Graph showing the deflection at the centre of a strengthened Bentley-slipper flywheel friction plate under thrust load. | 7th Sep 1934 | Box 85 \ 2 scan0114 | |
| Request to obtain an arrangement drawing and quotation from Borg & Beck for an 11' clutch. | 13th Sep 1934 | Box 85 \ 2 scan0115 | |
| Cost and priority of a conversion job for Captain Van Neck's car to prevent rattles in the Synchro Mesh. | 12th Sep 1934 | Box 85 \ 2 scan0116 | |
| Modifications to the Bentley Clutch design, proposing a simplified version. | 17th Sep 1934 | Box 85 \ 2 scan0117 | |
| Request to prepare a disc type flywheel and clutch for a 4-bearing crankshaft, with modifications to the flywheel bore. | 3rd Oct 1934 | Box 85 \ 2 scan0118 | |
| Requesting a Mellenite flywheel with a starter ring for testing on a rig up to 5500 r.p.m. | 8th Oct 1934 | Box 85 \ 2 scan0119 | |
| Persistent issue of rattling Bentley clutches and recommending a standardized modification as a permanent solution. | 12th Oct 1934 | Box 85 \ 2 scan0120 | |
| Solution for gear lever rattles on a Bentley, involving an extra floating bush. | 12th Oct 1934 | Box 85 \ 2 scan0121 | |
| Experimental blueprint detailing modifications to a gear change bracket to stop rattles. | 12th Oct 1934 | Box 85 \ 2 scan0122 | |
| Cure for rattles on the Bentley clutch and the policy for its application upon customer complaint. | 16th Oct 1934 | Box 85 \ 2 scan0123 | |
| Technical memo regarding a rattle on clutch engagement in Bentley vehicles, its cause and the required modification. | 20th Oct 1934 | Box 85 \ 2 scan0124 | |
| Damage caused by bifurcated rivetting on clutch fabrics, instructing the use of ordinary rivets for specific models. | 20th Oct 1934 | Box 85 \ 2 scan0125 | |
| Standardisation of parts regarding spring centre deletion and external clutch adjustment fitting. | 18th Sep 1934 | Box 85 \ 2 scan0126 | |
| The cost and production timeline for extra jigs, tools, and equipment for the 'D' series chassis. | 26th Sep 1934 | Box 85 \ 2 scan0127 | |
| Standardisation of a spring loaded spherical bearing for a pedal shaft. | 6th Oct 1934 | Box 85 \ 2 scan0128 | |
| Cost estimate and production feasibility note for extra jigs, tools, and equipment. | 1st Oct 1934 | Box 85 \ 2 scan0129 | |
| Schemes to eliminate gear lever noise and dither on a Bentley. | 7th Nov 1934 | Box 85 \ 2 scan0130 | |
| Potential causes of clutch slip on a Bentley chassis, questioning if it's caused by the lubrication system. | 15th Nov 1934 | Box 85 \ 2 scan0131 | |
| Responding to a reported case of clutch slip on a Bentley B-53-AE and mentioning ongoing experiments for an improved clutch. | 15th Nov 1934 | Box 85 \ 2 scan0132 | |
| Re-lining of the clutch on Experimental Bentley Chassis No. B.4. | 30th Nov 1934 | Box 85 \ 2 scan0133 | |
| Modification and fitting of flywheels and clutches to B-10 and B-12 units for data gathering. | 20th Dec 1934 | Box 85 \ 2 scan0134 | |
| Modification of disc flywheels for a Bentley. | 28th Dec 1934 | Box 85 \ 2 scan0135 | |
| Flywheel balancing issues, requesting that the complete assembly be tested on knife edges before engine fitting. | 1st Jan 1935 | Box 85 \ 2 scan0136 | |
| Summary of clutch experiment setups for various units. | 7th Jan 1935 | Box 85 \ 2 scan0137 | |
| High-speed test report on a Bentley 'milanite' flywheel. | 8th Jan 1935 | Box 85 \ 2 scan0138 | |
| Request to saw-cut the driven plate of the clutch on a B-11 unit. | 17th Jan 1935 | Box 85 \ 2 scan0139 | |
| Re-standardisation and specification of a Bentley clutch, including a list of part numbers. | 21th Jan 1935 | Box 85 \ 2 scan0140 | |
| Specifications for modifying a clutch for a B-10 Unit. | 25th Jan 1935 | Box 85 \ 2 scan0141 | |
| Experiments to eliminate gear lever rattle on the Bentley. | 29th Jan 1935 | Box 85 \ 2 scan0142 | |
| Diagram of an isolated gear change lever mechanism for a Bentley. | 29th Jan 1935 | Box 85 \ 2 scan0143 | |
| Blueprint diagram illustrating a Mor-Flex coupling on a selector shaft for a Bentley. | 29th Jan 1935 | Box 85 \ 2 scan0144 | |
| Flywheel experiments on a Bentley, concerning low inertia issues causing rattles and a request to fit a new scheme. | 29th Jan 1935 | Box 85 \ 2 scan0145 | |
| Table comparing the weight and inertia values for various Bentley flywheels. | 29th Jan 1935 | Box 85 \ 2 scan0146 | |
| The decision not to standardise a lightened flywheel for the Bentley Clutch. | 31th Jan 1935 | Box 85 \ 2 scan0147 | |
| Tackling the gear lever rattle on the Bentley. | 1st Feb 1935 | Box 85 \ 2 scan0148 | |
| The elimination of gear lever rattles on a Bentley chassis. | 2nd Feb 1935 | Box 85 \ 2 scan0149 | |
| Flywheel experiments on a Bentley, specifying a change from an 11' to a 10' Borg & Beck clutch. | 4th Feb 1935 | Box 85 \ 2 scan0150 | |
| Complaints about gear lever rattles on Bentley chassis and requesting a suggested course of action. | 4th Feb 1935 | Box 85 \ 2 scan0151 | |
| Fitting a Terraplane cork clutch and spring drive, with a deflection curve diagram. | 5th Feb 1935 | Box 85 \ 2 scan0152 | |
| Non-standardised cure for gear lever rattles on a Bentley for a Mr. Ballantine. | 6th Feb 1935 | Box 85 \ 2 scan0153 | |
| Flywheel vibrations by adjusting the balance of the crank web. | 7th Feb 1935 | Box 85 \ 2 scan0154 | |
| Bentley clutch design with technical representatives from Borg & Beck. | 14th Feb 1935 | Box 85 \ 2 scan0155 | |
| Use of Borg & Beck clutches versus in-house designs for Bentley, 20/25 and Wraith models. | 27th Feb 1935 | Box 85 \ 2 scan0156 | |
| Lubrication leak issues on the Bentley clutch operation anchor link and a proposed solution. | 21th Feb 1935 | Box 85 \ 2 scan0157 | |
| The investigation of a failed clutch centre for a new Bentley clutch. | 8th Mar 1935 | Box 85 \ 2 scan0158 | |
| Suggesting a new type of self-sealing spigot bearing for the Borg and Beck clutch on a Bentley. | 16th Jul 1935 | Box 85 \ 2 scan0159 | |
| Urgent request for a modified clutch driven plate made of .080 saw steel for a 10,000-mile test. | 19th Mar 1935 | Box 85 \ 2 scan0160 | |
| Trial of a new Borg & Beck clutch for Bentley models. | 22th Mar 1935 | Box 85 \ 2 scan0161 | |
| Standardisation features for the Bentley clutch. | 22th Mar 1935 | Box 85 \ 2 scan0162 | |
| Standardisation of parts report for a lightened clutch, part number N.Sch.3948. | 19th Jan 1935 | Box 85 \ 2 scan0163 | |
| Cost analysis and savings calculation for introducing a new part for the 'E' series chassis. | 8th Feb 1935 | Box 85 \ 2 scan0164 | |
| Standardisation of a cantilever pedal for the Bentley to improve clutch operation. | 29th Jan 1935 | Box 85 \ 2 scan0165 | |
| Cost estimation for extra jigs, tools and equipment, including a cost comparison between an old and a new part. | 14th Feb 1935 | Box 85 \ 2 scan0166 | |
| Urging the detailing of an adaptation of a Borg and Beck clutch for a Bentley engine. | 3rd Apr 1935 | Box 85 \ 2 scan0167 | |
| Production hold and modifications for Bentley cantilever pedals due to deflection issues. | 17th Apr 1935 | Box 85 \ 2 scan0168 | |
| Modifications to a Bentley's Borg and Beck clutch thrust bearing housing for improved oil retention. | 17th Apr 1935 | Box 85 \ 2 scan0169 | |
| Points raised by Borg and Beck Ltd. regarding a Bentley clutch and the corresponding remarks. | 18th Apr 1935 | Box 85 \ 2 scan0170 | |
| Design of a clutch plate and spring damped centres. | 18th Apr 1935 | Box 85 \ 2 scan0171 | |
| Instructing the swapping of flywheels and clutches between two engine units for experimental purposes. | 27th Apr 1935 | Box 85 \ 2 scan0172 | |
| Request to fit a new Millenite flywheel and inertia ring to a Y-4-BB unit as a replacement for a distorted one. | 2nd May 1935 | Box 85 \ 2 scan0173 | |
| Flywheel experiments and the weights and inertia values of various components. | 10th May 1935 | Box 85 \ 2 scan0174 | |
| Modifications and testing for a Bentley clutch cover. | 23th May 1935 | Box 85 \ 2 scan0175 | |
| The proposal to stiffen the clutch cover for the Bentley chassis flywheel and clutch. | 24th May 1935 | Box 85 \ 2 scan0176 | |
| Internal memorandum regarding a Bentley chassis clutch issue and the proposed solution. | 27th May 1935 | Box 85 \ 2 scan0177 | |
| Breakdown of weights for the components of a Bentley Clutch cartridge assembly. | 30th May 1935 | Box 85 \ 2 scan0178 | |
| Trial fitting of a strengthened Bentley clutch cover to a B-5 unit. | 3rd Jun 1935 | Box 85 \ 2 scan0179 | |
| Lightening of components for a Bentley Clutch. | 3rd Jun 1935 | Box 85 \ 2 scan0180 | |
| Query regarding the standardisation of a modified clutch cover for a Bentley chassis to resolve an issue with the clutch pedal. | 22th Jun 1935 | Box 85 \ 2 scan0181 | |
| Requesting the polar moment of inertia for a single plate flywheel and clutch, and for a double plate clutch. | 11th Jul 1935 | Box 85 \ 2 scan0182 | |
| Test results of different Bentley flywheel and clutch components. | 18th Jul 1935 | Box 85 \ 2 scan0183 | |
| Recurring clutch failure on a standard Bentley at Brooklands. | 10th Aug 1935 | Box 85 \ 2 scan0184 | |
| Use of Borg & Beck clutches on Bentley models, flywheel supply, and pedal lever modifications. | 13th Aug 1935 | Box 85 \ 2 scan0185 | |
| The performance and testing of Borg & Beck clutches fitted to Bentley cars. | 16th Aug 1935 | Box 85 \ 2 scan0186 | |
| Issues with customers burning out the Bentley clutch mechanism due to pedal clearance problems. | 27th Aug 1935 | Box 85 \ 2 scan0187 | |
| Issues with the original Bentley clutch and the performance of a new, superior design. | 29th Aug 1935 | Box 85 \ 2 scan0188 | |
| From a cork manufacturer regarding the supply of alternative laminated washers due to the size constraints of natural cork. | 9th Sep 1936 | Box 85 \ 2 scan0189 | |
| Requesting an official order for laminated composition cork washers received from a supplier. | 11th Sep 1935 | Box 85 \ 2 scan0190 | |
| Fitting Borg & Beck clutches to Bentley units, including specifications for ordering. | 11th Sep 1935 | Box 85 \ 2 scan0191 | |
| Instructing the order of a further nine levers for Borg & Beck clutches to be fitted to experimental and sales cars. | 12th Sep 1935 | Box 85 \ 2 scan0192 | |
| Invoice from Alfred Ogden & Co. for a Laminated Compo Cork Washer and requesting instructions to issue an order. | 12th Sep 1935 | Box 85 \ 2 scan0193 | |
| Confirming receipt of twelve Laminated Composition Cork Washers and authorising payment. | 13th Sep 1935 | Box 85 \ 2 scan0194 | |
| 10' Borg & Beck Clutch on a Large Bore Bentley. | 3rd Oct 1935 | Box 85 \ 2 scan0195 | |
| New drawings for the Large Bore Bentley Chassis Spring Drive and Slipper Flywheel. | 15th Oct 1935 | Box 85 \ 2 scan0196 | |
| Requesting the relative labour and material cost for a Bentley clutch flywheel versus a Borg & Beck arrangement. | 30th Oct 1935 | Box 85 \ 2 scan0197 | |
| Confirming the trial of a B-19 clutch with an Oilite cage, using no external lubrication for the trunnion. | 7th Nov 1935 | Box 85 \ 2 scan0198 | |
| Request to fit a clutch pedal return spring to a car while it is in the shop. | 11th Nov 1935 | Box 85 \ 2 scan0199 | |
| Request to test drive a Large Bore Bentley with a Vanvooren Body in traffic and provide clutch wear data. | 16th Nov 1935 | Box 85 \ 2 scan0200 | |
| Requesting an investigation to increase the travel of the Bentley clutch pedal. | 19th Nov 1935 | Box 85 \ 2 scan0201 | |
| Adoption and testing of a Borg & Beck clutch for the Big Bore Bentley. | 19th Nov 1935 | Box 85 \ 2 scan0202 | |
| Summary of clutch tests concluding the unit for the large bore Bentley is more durable and proposing a larger version for the 20/25 chassis. | 19th Nov 1935 | Box 85 \ 2 scan0203 | |
| Performance and testing of a Borg & Beck clutch fitted to Bentley cars. | 16th Jun 1935 | Box 85 \ 2 scan0204 | |
| Costs for re-lining early type Bentley clutches versus fitting a Borg & Beck type. | 18th Nov 1935 | Box 85 \ 2 scan0205 | |
| Comparative table of clutch pedal ratios for various clutch systems. | 19th Nov 1935 | Box 85 \ 2 scan0206 | |
| Specification table for wear adjustments on two types of Bentley clutches. | 20th Nov 1935 | Box 85 \ 2 scan0207 | |
| Note detailing the clutch designs used on various Bentley series. | 23th Nov 1935 | Box 85 \ 2 scan0208 | |
| The maximum wear adjustment for the Borg & Beck clutch on a Bentley. | 25th Nov 1935 | Box 85 \ 2 scan0209 | |
| The travel of the Bentley clutch pedal to accommodate lining wear. | 25th Nov 1935 | Box 85 \ 2 scan0210 | |
| Results of Bentley clutch tests on Porlock Hill, comparing R.R. and Borg & Beck types. | 25th Nov 1935 | Box 85 \ 2 scan0211 | |
| Recurring clutch failures on Bentley vehicles, cost implications, and a proposed upgrade. | 25th Nov 1935 | Box 85 \ 2 scan0212 | |
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