Rolls-Royce Archives
From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
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Official order be sent to Messrs. Borg & Beck Co. Ltd. for parts already received.24th Jun 1937Box 129 \ 1  scan0206
Letter to Ben Hopkins regarding the supply of Cleveland Graphite Bronze clutch material for testing.25th Jun 1937Box 129 \ 1  scan0207
Meeting with Borg & Beck to discuss clutch costs.25th Jun 1937Box 129 \ 1  scan0208
Letter from Borg & Beck Company Ltd confirming a telephone conversation and arranging a meeting.25th Jun 1937Box 129 \ 1  scan0209
Letter from the Experimental Dept. to Messrs. Borg & Beck Co. Ltd. regarding a fault in 10' clutch assemblies.26th Jun 1937Box 129 \ 1  scan0210
Letter to Borg & Beck Ltd. concerning the purchase and pricing of clutch plates for the Phantom III.29th Jun 1937Box 129 \ 1  scan0211
Letter from Borg & Beck Company Ltd. concerning clutch plate deflection graphs for the Phantom III.1st Jul 1937Box 129 \ 1  scan0212
Deflection curve graph for a 13.5 inch compound cushion type driven plate with special Raybestos facings.29th Jun 1937Box 129 \ 1  scan0213
Deflection curve graph for a 13.5 inch compound cushion type driven plate, manufactured by the Long Co. U.S.A.29th Jun 1937Box 129 \ 1  scan0214
Order for 50 Thermoid Clutch rings from America.1st Jul 1937Box 129 \ 1  scan0215
Letter from Borg & Beck Company Ltd. regarding a fault found on 10' clutch assemblies.1st Jul 1937Box 129 \ 1  scan0216
Letter from clutch manufacturer Borg & Beck regarding the supply and pricing of 100 replacement clutch plates for Phantom III cars.1st Jul 1937Box 129 \ 1  scan0217
Letter from Borg & Beck Company Ltd. to W.A. Robotham Esq. regarding a revised quotation and the need for an early decision.1st Jul 1937Box 129 \ 1  scan0218
Short internal memo regarding information about Borg & Beck clutches.3rd Jul 1937Box 129 \ 1  scan0219
Letter to Borg & Beck Co. Ltd. discussing the performance curves and testing of clutch cushion springs.3rd Jul 1937Box 129 \ 1  scan0220
Letter from a clutch manufacturer discussing test results for different clutch facings on a Driven Plate for the Phantom III Chassis.5th Jul 1937Box 129 \ 1  scan0221
Letter to L.J. Loranger of Borg-Warner Corporation regarding invoices and unexpected costs for clutch plates.6th Jul 1937Box 129 \ 1  scan0222
Copy of an invoice for the sale and shipment of driven member assemblies.28th May 1937Box 129 \ 1  scan0223
Follow-up letter from Newton & Bennett Limited requesting an opinion on clutch plates previously supplied.7th Jul 1937Box 129 \ 1  scan0224
Letter to Messrs Newton & Bennett Ltd regarding a delay in testing flexible clutch plates.8th Jul 1937Box 129 \ 1  scan0225
Letter to The Borg & Beck Co. regarding a servo, patent situation, and clutch plates.13th Jul 1937Box 129 \ 1  scan0226
Notes for a visit to Mr. Emmott of Borg & Beck regarding the history and development of the Phantom III clutch.14th Jul 1937Box 129 \ 1  scan0227
Clutch plate pricing negotiations and supplier performance issues with Borg & Beck.14th Jul 1937Box 129 \ 1  scan0228
Letter to Messrs. Borg & Beck Limited regarding a quotation for 500 Phantom III clutch centre plates.16th Jul 1937Box 129 \ 1  scan0229
Letter from Long Manufacturing Division to Mr. W. A. Robotham regarding a cost misunderstanding for ten driven members.20th Jul 1937Box 129 \ 1  scan0230
Advice note from Borg & Beck Co., Ltd. for the dispatch of driven plate assemblies.26th Jul 1937Box 129 \ 1  scan0231
Letter to Messrs. Borg & Beck Company Ltd. regarding the supply of clutch and Bentley plates.27th Jul 1937Box 129 \ 1  scan0232
Order to be placed with Borg & Beck for Bentley clutch plates.27th Jul 1937Box 129 \ 1  scan0233
The despatch of Ph.III clutch hubs to Borg & Beck Ltd.27th Jul 1937Box 129 \ 1  scan0234
Specification table for clutch plates used in various chassis and unit configurations.28th Jul 1937Box 129 \ 1  scan0235
Comparison of specifications for P.III, 25/30, and Bentley models, focusing on clutch and flywheel details.1st Jul 1937Box 129 \ 1  scan0236
Letter to Borg & Beck Ltd. concerning a potential change in spline size for 10' and 11' clutches.4th Aug 1937Box 129 \ 1  scan0237
Letter from Borg & Beck Company Ltd regarding a potential change to driven plate hub splines for clutches.5th Aug 1937Box 129 \ 1  scan0238
Letter to Borg & Beck Ltd. concerning 10.A.3 and 11.A.3 clutches and a now-abandoned revised gearbox design.6th Aug 1937Box 129 \ 1  scan0239
Letter to Borg & Beck Co. Ltd. regarding a delay in supplying hubs for Phantom III clutches and a request for a quotation.10th Aug 1937Box 129 \ 1  scan0240
Letter to Borg & Beck Co. Ltd. concerning excessive run-out on tested Phantom III clutch driven plates.12th Aug 1937Box 129 \ 1  scan0241
Letter discussing the return of five damaged plates, their runout, balance, and a request for a new facing.12th Aug 1937Box 129 \ 1  scan0242
Letter from clutch manufacturer Borg & Beck regarding runout and balance issues with driven plates for the Phantom III model.13th Aug 1937Box 129 \ 1  scan0243
Visit to Borg & Beck Works regarding cracking issues with Phantom III clutch facings during drilling.17th Aug 1937Box 129 \ 1  scan0244
Delay in steel supplies for cushion springs and plans for replacements on customer cars.17th Aug 1937Box 129 \ 1  scan0245
Letter concerning the supply of friction material ('Clevite') for a flywheel and pressure plate assembly.18th Aug 1937Box 129 \ 1  scan0246
Technical drawing of a clutch steel disc assembly, detailing its components and dimensions.3rd Apr 1937Box 129 \ 1  scan0247
Faults found during the investigation of Borg & Beck clutches, including issues with pressure plates and centre plates.19th Aug 1937Box 129 \ 1  scan0248
Success of Thermoid clutch linings and the decision to fit them to 25/30 and Bentley models.23th Aug 1937Box 129 \ 1  scan0249
Issues with Borg & Beck clutches, including plate flatness, run-out, and packing for transit.23th Aug 1937Box 129 \ 1  scan0250
Letter to Messrs Borg & Beck Ltd. regarding run-out issues on 10' and 11' clutch plates, likely caused by damage during transit.23th Aug 1937Box 129 \ 1  scan0251
The Phantom III Clutch, detailing methods to accommodate different clutch plate thicknesses.24th Aug 1937Box 129 \ 1  scan0252
Letter from Ferodo Limited confirming a clutch spinning rig demonstration and testing of clutch facings.24th Aug 1937Box 129 \ 1  scan0253
Letter from Borg & Beck Company Ltd. regarding the packing of 10' and 11' clutches.25th Aug 1937Box 129 \ 1  scan0254
Unexpected high cost for Long clutch plates which solved the Ph.III clutch problem.28th Aug 1937Box 129 \ 1  scan0255
Letter to Ferodo Ltd. detailing the results of bursting tests on various clutch facings.28th Aug 1937Box 129 \ 1  scan0256
Letter discussing test results for different facing materials and requesting further samples for road tests.28th Aug 1937Box 129 \ 1  scan0257
Letter from Ferodo Limited regarding bursting tests and description of clutch facings.31th Aug 1937Box 129 \ 1  scan0258
Telegram received by telephone confirming metallic facings were shipped via Meadows on the Franconia.31th Aug 1937Box 129 \ 1  scan0259
To Mr. Chandler regarding a faulty Spring Plate from a Borg & Beck Clutch with a request to address the issue with the supplier.1st Sep 1937Box 129 \ 1  scan0260
Order for six clutch plates to be passed to the Long Manufacturing Co.2nd Sep 1937Box 129 \ 1  scan0261
Sending an 11-inch clutch plate with loose linings to Messrs Borg & Beck for inspection.2nd Sep 1937Box 129 \ 1  scan0262
Letter to Borg and Beck regarding the return of a faulty 11' clutch plate for inspection.2nd Sep 1937Box 129 \ 1  scan0263
Requesting the return of an 11' clutch plate to Borg and Beck in Leamington Spa.2nd Sep 1937Box 129 \ 1  scan0264
Covering order for a consignment of 18 Borg & Beck 10' driven plates.2nd Sep 1937Box 129 \ 1  scan0265
Letter to Borg & Beck Co. Ltd. regarding 10' and 11' clutches and Thermoid facings.2nd Sep 1937Box 129 \ 1  scan0266
Letter from Borg & Beck Company Limited regarding 10' and 11' clutches and changing friction facings.6th Sep 1937Box 129 \ 1  scan0267
Letter from Borg & Beck Company Limited discussing moulded facings, driven plates, and a quotation for modifications.6th Sep 1937Box 129 \ 1  scan0268
Quotation from Borg & Beck Company Limited for modifying driven plates.6th Sep 1937Box 129 \ 1  scan0269
Letter from Borg & Beck Company Limited regarding the price and supply of 10' and 11' clutches with Thermoid facings.1st Sep 1937Box 129 \ 1  scan0270
Quotation from Borg & Beck Company Limited for a Model 10.A3 Multi-Spring Single Dry Plate Clutch.1st Sep 1937Box 129 \ 1  scan0271
Quotation from Borg & Beck Company Limited for a Model 11.A3 Multi-Spring Single Dry Plate Clutch.1st Sep 1937Box 129 \ 1  scan0272
Letter to Borg & Beck Co. Ltd. acknowledging correspondence regarding 10' and 11' clutches.7th Sep 1937Box 129 \ 1  scan0273
Letter to a supplier detailing manufacturing faults found in recently received plates.7th Sep 1937Box 129 \ 1  scan0274
Letter from clutch manufacturer Borg & Beck regarding complaints about 13½ inch Long Type Driven Plates.8th Sep 1937Box 129 \ 1  scan0275
Letter from Borg & Beck Company Ltd. confirming a telephone conversation regarding an order for clutches and facings.8th Sep 1937Box 129 \ 1  scan0276
Letter from Borg & Beck Company Ltd. regarding the delayed completion of a rig for bursting tests on clutch facings.10th Sep 1937Box 129 \ 1  scan0277
Letter from Borg & Beck Company Limited acknowledging blueprints for 13½' Driven Plates for the Phantom III application and suggesting a follow-up meeting.10th Sep 1937Box 129 \ 1  scan0278
Letter to Messrs. Borg & Beck Co. Ltd. attaching blueprints related to Driven Plate Assemblies for order 47667.8th Sep 1937Box 129 \ 1  scan0279
Letter to Borg & Beck Co. Ltd. regarding the change to Thermoid facings on 10' and 11' clutches.10th Sep 1937Box 129 \ 1  scan0280
Letter to Borg & Beck Ltd. regarding bursting tests on a cracked Thermoid plate and arranging a meeting.13th Sep 1937Box 129 \ 1  scan0281
Letter from clutch manufacturer Borg & Beck regarding order details, product testing, and delivery schedules.15th Sep 1937Box 129 \ 1  scan0282
Continuation letter from Borg & Beck Company Limited regarding the production of a size plate on a hand-made basis.15th Sep 1937Box 129 \ 1  scan0283
Letter to Borg & Beck Ltd. regarding poor quality plates and arranging a visit for inspection.16th Sep 1937Box 129 \ 1  scan0284
Clutch slipping issues with the facing material on Bentley and 25/30 models.16th Sep 1937Box 129 \ 1  scan0285
Letter from Borg & Beck Company Ltd. regarding a Thrust Spring Chart and Detail Drawings for a Phantom III clutch component.18th Sep 1937Box 129 \ 1  scan0286
Letter from Borg & Beck Company Ltd. regarding production difficulties and proposed changes to clutch friction facings.20th Sep 1937Box 129 \ 1  scan0287
The initial testing of Cleveland Graphite Bronze clutch facings for older clutch models.28th Sep 1937Box 129 \ 1  scan0288
Road test report on new clutch facings from Cleveland Graphite Bronze Co. fitted to car 17-G-4.28th Sep 1937Box 129 \ 1  scan0289
Letter from the Cleveland Graphite Bronze Co. regarding the design and material for flywheel and pressure plate friction facings.18th Aug 1937Box 129 \ 1  scan0290
Letter to the Cleveland Graphite Bronze Co. discussing bearing material tests and results.28th Sep 1937Box 129 \ 1  scan0291
Letter to Ben F. Hopkins regarding his visit to Derby and a game of Snooker.28th Sep 1937Box 129 \ 1  scan0292
Letter to a supplier regarding slipping clutches and the testing of spring poundage for 10' and 11' models.29th Sep 1937Box 129 \ 1  scan0293
Analysis and comparison of a hard-rolled Carbon Steel sample, with a conclusion on its suitability.30th Sep 1937Box 129 \ 1  scan0294
Letter from Borg & Beck Company Ltd. regarding the supply of steel for Phantom III clutch components.27th Sep 1937Box 129 \ 1  scan0295
Use of Borg & Beck clutches versus in-house designs for Bentley, 20/25, and Wraith models.27th Feb 1935Box 129 \ 2  scan0001
Letter from Hudson Motor Car Company discussing the design and performance of their cork-inserted wet clutch compared to a dry clutch.19th Jun 1934Box 129 \ 2  scan0002
Page 2 of a letter to Mr. Robotham regarding a fancy pedal arrangement.19th Jun 1934Box 129 \ 2  scan0003
To Roy requesting an order for a Borg & Beck 11A1G clutch.21th Sep 1934Box 129 \ 2  scan0004
Specification sheet for the Borg & Beck Clutch, Type 11 A1-G.22th Jan 1934Box 129 \ 2  scan0005
Technical drawing of a Borg & Beck clutch assembly.22th Jan 1934Box 129 \ 2  scan0006
Confirming receipt of a Pedal Date Sheet from Borg & Beck Co. Ltd.1st Oct 1934Box 129 \ 2  scan0007
Pedal recommendations and specifications for a Borg & Beck clutch system.28th Sep 1934Box 129 \ 2  scan0008
Letter from Borg & Beck Company regarding a sample clutch and test results.12th Nov 1934Box 129 \ 2  scan0009
Letter to The Borg & Beck Company Ltd. concerning an 11-inch clutch test.14th Nov 1934Box 129 \ 2  scan0010


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