| Description | Date | Identifier | |
| Method for locating and fixing 10-inch Borg & Beck clutches on Bentley flywheels. | 16th Jan 1936 | Box 129 \ 3 scan0044 | |
| Letter to Messrs. Leonard Williams & Co. Ltd., regarding the supply of a 12' clutch for a 12-cylinder Packard car. | 16th Jan 1936 | Box 129 \ 3 scan0045 | |
| Chemical analysis report for a Clutch Pressure Plate. | 16th Jan 1936 | Box 129 \ 3 scan0046 | |
| Micro-examination report on a clutch pressure plate made by Borg & Beck. | 15th Jan 1936 | Box 129 \ 3 scan0047 | |
| Laboratory photomicrograph showing a material's structure at 100 diameters magnification. | 1st Oct 1935 | Box 129 \ 3 scan0048 | |
| Photomicrograph showing a material's microstructure at 150 diameters magnification. | 1st Oct 1935 | Box 129 \ 3 scan0049 | |
| Letter from Borg & Beck Company Ltd. regarding clutch components and drawings for a Phantom III chassis. | 16th Jan 1936 | Box 129 \ 3 scan0050 | |
| Letter to Borg & Beck Ltd. concerning the manufacture of a Long type clutch driven member. | 17th Jan 1936 | Box 129 \ 3 scan0051 | |
| Telegram received by telephone regarding the dispatch of a driven plate and clutch. | 17th Jan 1936 | Box 129 \ 3 scan0052 | |
| Instructing modifications to an 11' A-6 type clutch being returned to supplier Borg & Beck. | 20th Jan 1936 | Box 129 \ 3 scan0053 | |
| Requesting the return of a Borg & Beck clutch for rebalancing and spring modification. | 20th Jan 1936 | Box 129 \ 3 scan0054 | |
| Letter to Borg & Beck Ltd. concerning the modification and testing of various clutches. | 21th Jan 1936 | Box 129 \ 3 scan0055 | |
| Request to measure the flatness and cushioning of Borg & Beck driven plates for the Phantom III. | 23th Jan 1936 | Box 129 \ 3 scan0056 | |
| Request for a 6' length of 3/4' S.82 bar for the Borg & Beck Co. to manufacture bolts. | 24th Jan 1936 | Box 129 \ 3 scan0057 | |
| Advice note from Borg & Beck Co. Ltd. for the despatch of clutches to the Experimental Department. | 24th Jan 1936 | Box 129 \ 3 scan0058 | |
| Advice note for a 10 A3 clutch, complete to specification with special eyebolts. | 27th Jan 1936 | Box 129 \ 3 scan0059 | |
| Letter from Borg & Beck Company Ltd. enclosing a print for a Splined Arbors Drive Plate Runout Test. | 27th Jan 1936 | Box 129 \ 3 scan0060 | |
| Letter from clutch manufacturer Borg & Beck confirming the rebuilding of a clutch assembly. | 28th Jan 1936 | Box 129 \ 3 scan0061 | |
| Requesting an order for the rebuilding and modification of 10A6 and 11A6 type clutches by Borg & Beck. | 28th Jan 1936 | Box 129 \ 3 scan0062 | |
| Requesting an arbor for balancing and checking Borg & Beck driven plates for the Phantom III. | 28th Jan 1936 | Box 129 \ 3 scan0063 | |
| Letter from Borg & Beck regarding the testing of a 10 inch clutch, safety margins, and flywheel flutter. | 29th Jan 1936 | Box 129 \ 3 scan0064 | |
| To book in a clutch from Borg and Beck Co. Ltd. for fitting on a Bentley engine. | 29th Jan 1936 | Box 129 \ 3 scan0065 | |
| Request to order a 13 3/4 inch clutch driven member for a Phantom III from Borg & Beck. | 31th Jan 1936 | Box 129 \ 3 scan0066 | |
| Letter to The Borg & Beck Clutch Co. Ltd. concerning the delivery and specification of a clutch plate. | 31th Jan 1936 | Box 129 \ 3 scan0067 | |
| Internal expense claim memo for lunch and teas. | 31th Jan 1936 | Box 129 \ 3 scan0068 | |
| Letter from Borg & Beck Company Ltd regarding the despatch of a Phantom III Driven Plate. | 1st Feb 1936 | Box 129 \ 3 scan0069 | |
| Covering order for a 20/25 HP model clutch. | 3rd Feb 1936 | Box 129 \ 3 scan0070 | |
| Invoice for two clutches from Borg & Beck Co. Ltd. | 3rd Feb 1936 | Box 129 \ 3 scan0071 | |
| Advice note from Borg & Beck Co., Ltd. regarding the dispatch of one modified 11 A3-G clutch. | 4th Feb 1936 | Box 129 \ 3 scan0072 | |
| Completion of an order for Borg & Beck and A-6 clutches. | 5th Feb 1936 | Box 129 \ 3 scan0073 | |
| Test report on the D.W.S. Hydraulic Jacks system, detailing clearance issues and jack/release times. | 5th Feb 1936 | Box 129 \ 3 scan0074 | |
| Issues with jacks, brackets, gland leaks, and a hydraulic pump. | 5th Feb 1936 | Box 129 \ 3 scan0075 | |
| Issues with the release valve, clutch, and pump, including a decision to use a hand pump on the first 50 chassis. | 5th Feb 1936 | Box 129 \ 3 scan0076 | |
| Weight breakdown for the components of the D.W.S. Jacking System. | 5th Feb 1936 | Box 129 \ 3 scan0077 | |
| Requesting an order for a 20/25 HP model 11.A.3 type clutch from Borg & Beck with specific components. | 5th Feb 1936 | Box 129 \ 3 scan0078 | |
| Letter to Messrs Borg & Beck regarding the return and modification of 10.A.3 clutches and an order for a new 11.A.3 clutch. | 5th Feb 1936 | Box 129 \ 3 scan0079 | |
| To book in a clutch collected from Borg and Beck. | 5th Feb 1936 | Box 129 \ 3 scan0080 | |
| Letter from Borg & Beck Company Ltd concerning the manufacturing rights and supply of 'Long' type clutch plates. | 5th Feb 1936 | Box 129 \ 3 scan0081 | |
| Measurement diagram of Borg & Beck driven plates to EX. 44. | 5th Feb 1936 | Box 129 \ 3 scan0082 | |
| Design changes to the 11' Borg and Beck clutch for the 25-30 HP model. | 5th Feb 1936 | Box 129 \ 3 scan0083 | |
| Further failures of Borg & Beck clutches during high-speed endurance testing, focusing on eyebolt issues and vibratory movements. | 5th Feb 1936 | Box 129 \ 3 scan0084 | |
| Investigation into the failure of Borg & Beck eyebolts and discussions on strengthening them. | 5th Feb 1936 | Box 129 \ 3 scan0085 | |
| Log of failures for Borg & Beck clutches. | 21th Jan 1936 | Box 129 \ 3 scan0086 | |
| Photograph showing examples of failed eye-bolts from Borg & Beck clutches. | 5th Feb 1936 | Box 129 \ 3 scan0087 | |
| Tests conducted on a Borg & Beck clutch to determine the cause of lever bolt breakages. | 5th Feb 1936 | Box 129 \ 3 scan0088 | |
| Hairpin spring and clutch bolt fatigue with proposed design changes. | 5th Feb 1936 | Box 129 \ 3 scan0089 | |
| Letter from clutch manufacturer Borg & Beck regarding the design and materials for clutch components. | 6th Feb 1936 | Box 129 \ 3 scan0090 | |
| Request to despatch a Ph.III clutch hub to Messrs. Borg & Beck for a new compound cushion plate trial. | 7th Feb 1936 | Box 129 \ 3 scan0091 | |
| Letter to Borg & Beck Ltd. requesting performance data and characteristics for a semi-centrifugal clutch. | 10th Feb 1936 | Box 129 \ 3 scan0092 | |
| Tests on different thrust springs for the Borg & Beck clutch on the 25/30 HP model. | 11th Feb 1936 | Box 129 \ 3 scan0093 | |
| Letter from Borg & Beck Company Ltd. regarding progress and technical data for a 'Long type Clutch'. | 11th Feb 1936 | Box 129 \ 3 scan0094 | |
| Sending two types of clutches to Messrs Borg & Beck for modifications. | 11th Feb 1936 | Box 129 \ 3 scan0095 | |
| Letter to Borg & Beck Ltd. regarding the return and rebuilding of an 11A6 and an 11A3 clutch. | 11th Feb 1936 | Box 129 \ 3 scan0096 | |
| Recommending an amendment to the 25/30 HP clutch specification based on prolonged testing. | 12th Feb 1936 | Box 129 \ 3 scan0097 | |
| Letter from clutch manufacturer Borg & Beck confirming the urgent rebuilding of returned clutches. | 12th Feb 1936 | Box 129 \ 3 scan0098 | |
| Dispatch of clutches to Borg & Beck for modifications under order number 54307. | 13th Feb 1936 | Box 129 \ 3 scan0099 | |
| Letter to Borg & Beck Co. Ltd. regarding the modification and return of clutch components. | 13th Feb 1936 | Box 129 \ 3 scan0100 | |
| Road test report on a Borg & Beck Clutch to determine the cause of bolt breakages. | 13th Feb 1936 | Box 129 \ 3 scan0101 | |
| Letter to The Borg & Beck Co. Ltd. confirming a specification change for 11' production clutches and providing test feedback. | 13th Feb 1936 | Box 129 \ 3 scan0102 | |
| Instruction to despatch two types of clutches to Borg & Beck Limited for modification. | 13th Feb 1936 | Box 129 \ 3 scan0103 | |
| Identifying a Borg & Beck clutch plate for the 34-EX car. | 14th Feb 1936 | Box 129 \ 3 scan0104 | |
| Listing different Borg & Beck Ph.III clutch driven plates and their corresponding reference numbers and specifications. | 14th Feb 1936 | Box 129 \ 3 scan0105 | |
| Letter from clutch manufacturer Borg & Beck regarding the construction and dispatch of a driven plate with an oil slinger. | 14th Feb 1936 | Box 129 \ 3 scan0106 | |
| Letter from Borg & Beck Company Ltd. acknowledging the return of clutch parts for modification. | 14th Feb 1936 | Box 129 \ 3 scan0107 | |
| Letter from Borg & Beck Company Ltd. regarding a clutch specification for a 20/25-HP application. | 14th Feb 1936 | Box 129 \ 3 scan0108 | |
| Specification and recommendation sheet for a Borg & Beck clutch. | 14th Feb 1936 | Box 129 \ 3 scan0109 | |
| Order for a driven plate from Borg & Beck. | 15th Feb 1936 | Box 129 \ 3 scan0110 | |
| Letter to Borg & Beck Ltd. concerning a revised specification BB.252, an oil slinger, and an 11 inch plate. | 15th Feb 1936 | Box 129 \ 3 scan0111 | |
| Despatch note for clutch parts to be sent to Messrs. Borg & Beck Limited for modifications. | 17th Feb 1936 | Box 129 \ 3 scan0112 | |
| Letter to Borg & Beck Ltd. concerning the testing, modification and supply of clutch components. | 17th Feb 1936 | Box 129 \ 3 scan0113 | |
| Letter requesting recommendations for the design of a clutch housing suitable for a ventilated clutch. | 17th Feb 1936 | Box 129 \ 3 scan0114 | |
| Road test report on a lightened Borg & Beck clutch after 266 miles in London traffic. | 18th Feb 1936 | Box 129 \ 3 scan0115 | |
| The testing and specification of Phantom III clutch plates. | 18th Feb 1936 | Box 129 \ 3 scan0116 | |
| Specifications for the 25/30 HP clutch. | 19th Feb 1936 | Box 129 \ 3 scan0117 | |
| Advice note from Borg & Beck for a rectified A6 cover assembly. | 19th Feb 1936 | Box 129 \ 3 scan0118 | |
| Arranging to book a modified Borg & Beck type 10A6 clutch for a Bentley into the Works. | 19th Feb 1936 | Box 129 \ 3 scan0119 | |
| Letter to Messrs. Borg & Beck Ltd. confirming points discussed regarding clutch components and modifications. | 20th Feb 1936 | Box 129 \ 3 scan0120 | |
| Letter concerning clutch plate balance, outstanding orders, and methods for marking engine timing positions. | 20th Feb 1936 | Box 129 \ 3 scan0121 | |
| Letter from clutch manufacturer Borg & Beck regarding an oil slinger drawing and plate modifications. | 21th Feb 1936 | Box 129 \ 3 scan0122 | |
| Letter from Borg & Beck Company Limited regarding component specifications and manufacturing processes for clutch parts. | 21th Feb 1936 | Box 129 \ 3 scan0123 | |
| Letter from Borg & Beck Company Ltd. regarding tests on a model 11' clutch and a proposal for a ventilated clutch housing. | 21th Feb 1936 | Box 129 \ 3 scan0124 | |
| To Roy attaching a copy of a requested document. | 24th Feb 1936 | Box 129 \ 3 scan0125 | |
| Specification document for a C-16 unit clutch. | 25th Feb 1936 | Box 129 \ 3 scan0126 | |
| Recommendations for making and protecting engine timing markings on Borg & Beck clutches. | 26th Feb 1936 | Box 129 \ 3 scan0127 | |
| Letter from a clutch manufacturer regarding a delay in re-building clutch cover assemblies due to material supply. | 26th Feb 1936 | Box 129 \ 3 scan0128 | |
| Dispatch of clutch parts to Borg & Beck Ltd. and requesting modifications. | 27th Feb 1936 | Box 129 \ 3 scan0129 | |
| Letter to a supplier regarding modifications and returns of clutch assemblies. | 27th Feb 1936 | Box 129 \ 3 scan0130 | |
| Letter to The Borg & Beck Company Ltd. regarding engine timing marks, friction plate balance, and steel supply for clutches. | 28th Feb 1936 | Box 129 \ 3 scan0131 | |
| Despatch note for various clutch parts to be sent to Borg & Beck Limited in Leamington Spa. | 2nd Mar 1936 | Box 129 \ 3 scan0132 | |
| Letter from clutch manufacturer Borg & Beck regarding the balance of 13.5 inch diameter friction plates. | 2nd Mar 1936 | Box 129 \ 3 scan0133 | |
| Two oil slingers being sent to The Borg & Beek Company. | 3rd Mar 1936 | Box 129 \ 3 scan0134 | |
| Letter to The Borg & Beck Company regarding the despatch of two finished oil slingers. | 3rd Mar 1936 | Box 129 \ 3 scan0135 | |
| Technical memo addressing issues with seat adjustment, clutch life, oil consumption, and engine pinking/detonation. | 3rd Mar 1936 | Box 129 \ 3 scan0136 | |
| Experimental brake development to reduce squeaking and increase consistency. | 5th May 1936 | Box 129 \ 3 scan0137 | |
| Letter to Durion Ltd. regarding the chromium plating of a clutch driven plate for wear testing. | 3rd Mar 1936 | Box 129 \ 3 scan0138 | |
| Internal order request for chromium plating a clutch driven plate. | 3rd Mar 1936 | Box 129 \ 3 scan0139 | |
| Sending a clutch driven plate for chromium plating to Messrs. Durion Ltd. | 4th Mar 1936 | Box 129 \ 3 scan0140 | |
| Despatch note for 2 oil slingers to be fixed on to plates for Messrs. Borg & Beck Limited. | 4th Mar 1936 | Box 129 \ 3 scan0141 | |
| Letter from Borg & Beck Company Ltd. acknowledging an order for clutch plates and oil slingers. | 4th Mar 1936 | Box 129 \ 3 scan0142 | |
| Letter from Durion Limited confirming the receipt of a clutch driven plate for chromium plating. | 5th Mar 1936 | Box 129 \ 3 scan0143 | |
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