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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DescriptionDateIdentifier
Letter to J.A. Behnan regarding an offer of re-employment in France.29th Dec 1936Box 130 \ 2  scan0369
Suggestions to increase the diameter and length of a lubricator for a pump body.30th Dec 1936Box 130 \ 2  scan0370
Multiple faults found on a car during a test drive, preventing it from being passed as ready.31th Dec 1936Box 130 \ 2  scan0371
Cylinder bore wear for a Bentley 3 1/2-Litre, Chassis No. B.3.CW, over a period of 21,460 miles.22th Dec 1936Box 130 \ 2  scan0372
The introduction of nickel in cylinder castings and subsequent cylinder bore wear.31th Dec 1936Box 130 \ 2  scan0373
Letter from Hubert HP Trist & Company regarding the supply of B.W. Clutch Linings for testing.1st Nov 1938Box 130 \ 3  scan0001
Letter to Messrs. Hubert HP Trist & Co. acknowledging receipt of clutch discs for testing on an experimental car.7th Nov 1938Box 130 \ 3  scan0002
Letter from Bendix Limited concerning an incorrect and delayed order for a 'Press-o-meter' instrument.7th Nov 1938Box 130 \ 3  scan0003
Receipt of 'Top Dog' clutch facings for a Bentley III from Hubert HP Trist & Co.7th Nov 1938Box 130 \ 3  scan0004
Letter to Bendix Ltd. regarding a delayed order for a Press-o-meter.8th Nov 1938Box 130 \ 3  scan0005
Correspondence regarding the arrangement of clutch liners for testing on an experimental car.8th Nov 1938Box 130 \ 3  scan0006
Request from the Experimental Department to Messrs. Borg & Beck Co. Ltd. for two 10' clutches.10th Nov 1938Box 130 \ 3  scan0007
Letter to Borg & Beck requesting the reconditioning of a 10' driven plate with new 'Top Dog' facings.10th Nov 1938Box 130 \ 3  scan0008
Letter to Borg & Beck Co. Ltd. regarding the performance and potential redesign of a 'Borglite' clutch plate for a Phantom III.10th Nov 1938Box 130 \ 3  scan0009
Proposal for weight reduction on the B.60 engine flywheel and clutch casing modifications.10th Nov 1938Box 130 \ 3  scan0010
Letter from clutch manufacturer Borg & Beck regarding Borglite plates and new hub designs.11th Nov 1938Box 130 \ 3  scan0011
Letter from Borg & Beck Company confirming the supply of four Long 10.C.F. clutches for a Bentley experimental application.11th Nov 1938Box 130 \ 3  scan0012
Despatch request for a 10-inch Driven Plate and 'Top Dog' Facings to Messrs. Borg & Beck Ltd.14th Nov 1938Box 130 \ 3  scan0013
Letter from Borg & Beck Company Ltd confirming receipt of a 10' Driven Plate and agreeing to carry out work without charge.15th Nov 1938Box 130 \ 3  scan0014
Letter from Borg & Beck Company Ltd regarding a 13 1/4' Borglite Driven Plate assembly and enclosing print No. 44017/2.17th Nov 1938Box 130 \ 3  scan0015
Letter to Borg & Beck Co. Ltd. regarding a 13 1/4' Borqlite driven plate and the production of a hub.18th Nov 1938Box 130 \ 3  scan0016
Letter from Wellworthy Piston Rings Ltd. discussing a new American bi-metal friction material for clutches and brakes.24th Nov 1938Box 130 \ 3  scan0017
Letter to Borg & Beck Co. Ltd. discussing the use of a 9-inch clutch for a light 4.5-litre car.24th Nov 1938Box 130 \ 3  scan0018
Clutch thrust spring pressures and calculations for 'Borg & Beck' and 'Long' clutches on Bentley vehicles.30th Nov 1938Box 130 \ 3  scan0019
Specifications and calculations for various clutch types, detailing spring configurations and thrust values.30th Nov 1938Box 130 \ 3  scan0020
Confirming that Borg & Beck are prepared to make new dies for the clutch hub splines at no extra charge.1st Dec 1938Box 130 \ 3  scan0021
Letter from the Experimental Department to Bendix Ltd. requesting an update on a press-o-meter.2nd Dec 1938Box 130 \ 3  scan0022
Letter to Vandervell Products Ltd. inquiring about Sintered Bronze for road springs and discussing Clevite graphite bronze for clutch applications.2nd Dec 1938Box 130 \ 3  scan0023
Letter discussing the testing of sintered bronze facings and the inability to continue experiments due to the disposal of the test car.2nd Dec 1938Box 130 \ 3  scan0024
Letter from Vandervell Products Ltd. regarding the satisfactory performance of Clevite material and Sintered Bronze.5th Dec 1938Box 130 \ 3  scan0025
Letter to Vandervell Ltd. regarding their experience with Graphite bronze interleaving and requesting material samples.7th Dec 1938Box 130 \ 3  scan0026
Letter from Bendix Limited acknowledging receipt of a letter and advising they have cabled their American company for an answer.7th Dec 1938Box 130 \ 3  scan0027
Letter from Vandervell Products Ltd. regarding the unsuitability of Sintered Bronze as an inter-leaf material for springs.7th Dec 1938Box 130 \ 3  scan0028
Letter to Borg & Beck Co.Ltd., concerning the production of an 11-inch driven plate with 1 3/8-inch splines.8th Dec 1938Box 130 \ 3  scan0029
Splines for the Borg & Beck clutch, stating a proposed change is not currently required.9th Dec 1938Box 130 \ 3  scan0030
Letter from C.H. Rodway Ltd. offering their services for the manufacture and supply of flywheel ring gears.12th Dec 1938Box 130 \ 3  scan0031
Continuation page of a letter from G. H. Rodway, Ltd. concerning the supply and fitting of gear.1st Sep 1938Box 130 \ 3  scan0032
Price list and advertisement for 'Shrunk-on' and 'Bolt-on' flywheel gears for various vehicle makes.1st Sep 1938Box 130 \ 3  scan0033
Data sheet listing specifications for 'Shrunk-on' and 'Bolt-on' Flywheel Ring Gears for various vehicle types.16th Dec 1938Box 130 \ 3  scan0034
Comparing clutch thrust pressure and finger ratios between Borg & Beck and Long clutches.16th Dec 1938Box 130 \ 3  scan0035
Letter to G.H. Rodway Ltd. regarding the manufacturing process for starter teeth on flywheels.16th Dec 1938Box 130 \ 3  scan0036
Rationalization of flywheels for Wraith & Bentley models.20th Dec 1938Box 130 \ 3  scan0037
Letter from the Experimental Department to Borg & Beck Co. Ltd. requesting specific clutch parts.22th Dec 1938Box 130 \ 3  scan0038
Instructions to prepare one flywheel and clutch assembly for a 6-cylinder B. 60-1 unit.22th Dec 1938Box 130 \ 3  scan0039
Letter to Borg & Beck Co. Ltd. regarding a discrepancy in Long C.F. Clutch specifications.23th Dec 1938Box 130 \ 3  scan0040
Letter from Borg & Beck Company Ltd regarding corrected calculations for clutch assemblies.28th Dec 1938Box 130 \ 3  scan0041
Letter to Wellworthy Piston Rings Ltd. regarding sintered bronze clutch materials.3rd Jan 1939Box 130 \ 3  scan0042
Letter to Borg & Beck Co. Ltd. regarding the supply and specification of 10' and 11' clutch plates.13th Jan 1939Box 130 \ 3  scan0043
Letter from Borg & Beck confirming an order for two 10' Driven Plates with a hub broaching specification change.16th Jan 1939Box 130 \ 3  scan0044
Recommendation to fit test bed clutches with stronger thrust springs to avoid trouble during testing.18th Jan 1939Box 130 \ 3  scan0045
Request to Borg & Beck Co. Ltd. for five 10' Long C.F. clutches for experimental work.20th Jan 1939Box 130 \ 3  scan0046
Letter from Borg & Beck Company Ltd. acknowledging a request for five Long 10.C.F. clutches.24th Jan 1939Box 130 \ 3  scan0047
Letter from Bendix Limited regarding the supply and delivery timeline for a Pedal-Pressure Gauge.25th Jan 1939Box 130 \ 3  scan0048
Request to Borg & Beck Co.Ltd. for another copy of an installation drawing for a 10' Long Clutch.4th Feb 1939Box 130 \ 3  scan0049
Letter from Borg & Beck Company Ltd enclosing a copy of Drawing No. 22000/2 for the Long Model 10.C.F. Clutch.6th Feb 1939Box 130 \ 3  scan0050
Standardisation and cost-saving opportunities for clutches supplied by Borg & Beck Ltd.8th Feb 1939Box 130 \ 3  scan0051
Technical specifications and procedures for clutch components.8th Feb 1939Box 130 \ 3  scan0052
Note on the process and cost for the special finish of a pressure plate.8th Feb 1939Box 130 \ 3  scan0053
Letter to Ferodo Ltd. requesting the supply of four clutch facings.10th Feb 1939Box 130 \ 3  scan0054
Letter to supplier Borg & Beck Co. Ltd. requesting the preparation of two clutches with modified springs for a 'Continental' Bentley.14th Feb 1939Box 130 \ 3  scan0055
Outlining recommendations for clutches supplied by Borg & Beck.16th Feb 1939Box 130 \ 3  scan0056
Letter from Borg & Beck Company Ltd confirming an order for two special clutches and their specifications.16th Feb 1939Box 130 \ 3  scan0057
Requesting the dispatch of four clutch facings to B. & B. Leamington Spa.17th Feb 1939Box 130 \ 3  scan0058
The re-drawing and re-numbering of a flexible flywheel rim.18th Feb 1939Box 130 \ 3  scan0059
Advice note for the dispatch of ten A3 clutches with detailed specifications.25th Feb 1939Box 130 \ 3  scan0060
Advice note from Borg & Beck Co. Ltd. for the dispatch of one modified Long 10 inch CF Clutch for a Bentley 'S'.25th Feb 1939Box 130 \ 3  scan0061
Letter to Borg & Beck Co. Ltd. concerning a dimensional preference for 11' Thermoid clutch facings.6th Mar 1939Box 130 \ 3  scan0062
Letter to Borg & Beck Co. Ltd. from the Experimental Department requesting clutch plate thickness specifications.6th Mar 1939Box 130 \ 3  scan0063
Letter from Borg & Beck regarding specifications for 'Long' type clutches.7th Mar 1939Box 130 \ 3  scan0064
Letter from Borg & Beck regarding the dimensions of 11 inch Thermoid clutch facings.7th Mar 1939Box 130 \ 3  scan0065
Letter from the Experimental Department to Bendix Ltd. regarding a delayed delivery of a Pedal Pressure Gauge.8th Mar 1939Box 130 \ 3  scan0066
Letter from Bendix Limited replying to an enquiry and confirming they have contacted their American company.14th Mar 1939Box 130 \ 3  scan0067
Requesting two 11-inch Long clutches for B.80 engines be sent to B. & B. in Leamington Spa.24th Mar 1939Box 130 \ 3  scan0068
Letter to Borg & Beck Co. Ltd. regarding the supply and modification of clutches for experimental engines.24th Mar 1939Box 130 \ 3  scan0069
Letter from Borg & Beck Company Ltd. regarding a specification change for special thrust springs in an 11.C.F. clutch.27th Mar 1939Box 130 \ 3  scan0070
Specification and recommendation sheet for a Borg & Beck clutch for an experimental vehicle type.27th Mar 1939Box 130 \ 3  scan0071
Blank specification and recommendation form for Borg & Beck clutches.27th Mar 1939Box 130 \ 3  scan0072
Blank specification and recommendation form for Borg & Beck clutches.27th Mar 1939Box 130 \ 3  scan0073
Blank specification and recommendation form for Borg & Beck clutches.31th Mar 1939Box 130 \ 3  scan0074
Letter from Bendix Limited regarding a delayed shipment of a Press-o-Meter.31th Mar 1939Box 130 \ 3  scan0075
Instruction to build all 8-cylinder engines with a flexible flywheel and 11' Long clutch.1st Apr 1939Box 130 \ 3  scan0076
Letter from Borg & Beck Company Ltd. regarding the Long 10.C.F. Clutch.15th Apr 1939Box 130 \ 3  scan0077
Confirming the pricing for 10' Long type clutches in comparison to Borg & Beck clutches.18th Apr 1939Box 130 \ 3  scan0078
Flywheel and clutch component specifications for specific chassis units.24th Apr 1939Box 130 \ 3  scan0079
Guide for identifying Long clutches for various engines by thrust spring colour and part numbers.26th Apr 1939Box 130 \ 3  scan0080
Letter to Borg & Beck Co. Ltd. regarding the use of their C.F. Long Clutches on experimental engines.26th Apr 1939Box 130 \ 3  scan0081
Letter to Borg & Beck Co. Ltd. requesting two 10 inch Long C.F. clutches for an experimental 3¼ litre engine.26th Apr 1939Box 130 \ 3  scan0082
Request to Borg & Beck Co. Ltd. for an assembly drawing and stock availability of a 9' Long C.F. clutch.4th May 1939Box 130 \ 3  scan0083
Letter to Borg & Beck Co. Ltd. requesting the preparation of experimental 11 inch long clutches.22th May 1939Box 130 \ 3  scan0084
Scheme for additions to the clutch servo test rig for all cars.22th May 1939Box 130 \ 3  scan0085
Letter from Borg & Beck Company Ltd acknowledging an order for Long 11 C.F. Clutches and confirming urgent delivery for one specific assembly.23th May 1939Box 130 \ 3  scan0086
Querying the need for a covering order and payment details for eight 11' Long Clutches supplied by Borg & Beck Ltd.24th May 1939Box 130 \ 3  scan0087
Clutch fierceness issues with graphite bronze facings on the 20/25 model.24th May 1939Box 130 \ 3  scan0088
Pricing for a small quantity of 8 11' Long Clutches.25th May 1939Box 130 \ 3  scan0089
Letter to Vandervell Products Ltd. regarding bad clutch judder experienced after fitting Graphite Bronze Clutch Facings.2nd Jun 1939Box 130 \ 3  scan0090
Letter to Vandervell Products Ltd. concerning a variable factor in bronze facings.2nd Jun 1939Box 130 \ 3  scan0091
Technical analysis of Borg & Beck 10' and 11' spring driven clutch plates.16th Jun 1939Box 130 \ 3  scan0092
Continued document discussing improvements to transmission rattle and chatter.16th Jun 1939Box 130 \ 3  scan0093
Letter to Borg & Beck Co. Ltd. requesting the manufacture of a special 10' clutch plate for experimental work.27th Jun 1939Box 130 \ 3  scan0094
Requesting the dispatch of two parcels containing broken clutch pressure plates to B. & B. Ltd.30th Jun 1939Box 130 \ 3  scan0095
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