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
Instructions regarding modifications to the gearbox and starter on engine, including electrical system changes.1st Mar 1926Box 15 \ 4  Scan003
Progress report on detachable dash connections, lighter clutch, propeller shaft joints, and gearbox design.1st Mar 1927Box 15 \ 4  Scan004
Failure of a locking device on the 12-EX Phantom engine coupling and a recommended solution.1st Mar 1927Box 15 \ 4  Scan005
Design and application of a universal joint for project EAC.10.1st Jan 1928Box 15 \ 4  Scan006
Technical memorandum discussing the design and material choices for a propeller shaft universal joint.25th Jan 1928Box 15 \ 4  Scan007
New 6-inch universal joint and propeller shaft, awaiting further comments before detailing.15th Feb 1928Box 15 \ 4  Scan008
Alternative design proposal for a 6' Universal Joint.18th Feb 1928Box 15 \ 4  Scan009
Design memo discussing preferences for the 'SS' propeller shaft.5th Mar 1928Box 15 \ 4  Scan010
Design options for an 'SS' propeller shaft.5th Mar 1928Box 15 \ 4  Scan011
Design options and drawings for the 'SS' propeller shaft.10th Mar 1928Box 15 \ 4  Scan012
Modification to the centralised chassis lubrication system for the universal joint and torque sphere.17th May 1928Box 15 \ 4  Scan013
Suggestion to improve crankshaft lubrication for a lightened clutch and universal joint by using a stainless steel plug or cadmium plating.10th Oct 1928Box 15 \ 4  Scan014
Stainless steel plug and concerns over the lubrication system for a clutch joint.17th Oct 1928Box 15 \ 4  Scan015
Fitting of a stainless steel plug to a lightened clutch and flywheel for vehicle 12-EX.17th Oct 1928Box 15 \ 4  Scan016
Oil leak from the steel sphere on 40/50 models and a recommended diagnostic test.28th Nov 1928Box 15 \ 4  Scan017
The oil retention requirements and production testing for 'SS' model propeller shaft joints.6th Dec 1928Box 15 \ 4  Scan018
Flexible coupling on the SS chassis due to increased engine power.27th Jan 1929Box 15 \ 4  Scan019
Replacement of fabric couplings with serrated ones to improve design and save weight.12th Feb 1929Box 15 \ 4  Scan020
Flexibility of trunnion bearings for SS Universal Joints compared to other models.2nd Feb 1929Box 15 \ 4  Scan021
Proposed modification to a serrated universal joint and SS. clutch shaft, focusing on lubrication.19th Feb 1929Box 15 \ 4  Scan022
Telegram reporting that experimental universal joints are leaking badly during a rig test.8th May 1918Box 15 \ 4  Scan023
Arranging for the immediate testing of a propeller shaft from the 23-EX car on a testing rig.1st Mar 1929Box 15 \ 4  Scan024
Testing of propeller shaft joints to prevent oil leakage, comparing washer materials and noting the need for a jointing solution.4th Apr 1929Box 15 \ 4  Scan025
Recommendation to add an oil groove to propeller shaft bearing trunnions to improve wear.14th May 1929Box 15 \ 4  Scan026
Blueprint detailing modifications to a trunnion block, including an enlarged view of a hole edge.17th Apr 1929Box 15 \ 4  Scan027
Modifications to universal joint filler plugs and washers to prevent oil leaks.17th Apr 1929Box 15 \ 4  Scan028
Request to test the propeller shaft for the 21-EX car for oil retention before being fitted.19th Apr 1929Box 15 \ 4  Scan029
Tests and solutions for oil leakage in propeller shaft universal joints.1st Apr 1929Box 15 \ 4  Scan030
Continued memorandum on the lubrication of Mechanics Joints, with an attached blueprint detail.1st May 1923Box 15 \ 4  Scan031
Recommending reverting to a fabric coupling for '33' cars due to faults, and proceeding slowly with improvements to the S.S. exhaust system.1st May 1923Box 15 \ 4  Scan032
Confirming the decision to use a fabric engine coupling instead of an all-metal one for the S.S. Chassis.8th May 1929Box 15 \ 4  Scan033
Urgent request to produce a SS. Fabric Coupling to test a method of securing plates on a test rig.31th May 1929Box 15 \ 4  Scan034
Letter from the American branch to the UK branch inquiring about the removal of the fabric engine coupling from S.S. layouts.12th Jun 1929Box 15 \ 4  Scan035
Request to make 4 sets of 'SS' Fabric Couplings with shorter rivets based on an attached scheme.8th Jun 1929Box 15 \ 4  Scan036
Engine suspension rubbers, rear support vibrations, and a reversion to fabric engine couplings.21th Jun 1929Box 15 \ 4  Scan037
Improving the lifespan of fabric couplings by comparing riveting and screwed thimble methods.21th Jun 1929Box 15 \ 4  Scan038
Answering seven questions about the characteristics and effects of body subframes.21th Jun 1929Box 15 \ 4  Scan039
Continued document detailing numbered points on construction and mentioning an attached report on subframe difficulties.1st Feb 1929Box 15 \ 4  Scan040
Proposed modifications to the subframes for two chassis types.1st Feb 1929Box 15 \ 4  Scan041
Difficulties of fitting S.S. bodies to chassis and proposing a building rig for coachbuilders.17th Apr 1929Box 15 \ 4  Scan042
Supply of subframe brackets and chassis templates to coachbuilders.29th Apr 1929Box 15 \ 4  Scan043
Subframe and chassis interchangeability for S.S. bodies and guidance for coachbuilders.29th Apr 1929Box 15 \ 4  Scan044
The challenges of coachbuilding for a new model, including issues with secrecy and experimental bodies.1st May 1929Box 15 \ 4  Scan045
Difficulties and solutions for mounting bodies on S.S. model subframes.1st May 1929Box 15 \ 4  Scan046
Dyno and road testing of axles and propeller shafts for chassis 23-EX.21th Jun 1929Box 15 \ 4  Scan047
Test data table for propeller shaft periods against buffer-axle clearances at various throttle settings.16th May 1929Box 15 \ 4  Scan048
Notice regarding the use of a standard fabric engine coupling for the J.2 series chassis.16th May 1929Box 15 \ 4  Scan049
Test results of different manufacturing schemes for fabric couplings to improve their lifespan.4th Jul 1929Box 15 \ 4  Scan050
Comparison of coupling life using spigoted bolts versus unspigoted bolts, noting application differences between Phantom and S.S. models.4th Jul 1929Box 15 \ 4  Scan051
Cross-sectional drawing of a bolted assembly.5th Jul 1929Box 15 \ 4  Scan052
Rectangular purple stamp from the Print Room.5th Jul 1929Box 15 \ 4  Scan053
Blueprint detailing different test designs for a fabric coupling.21th Jul 1929Box 15 \ 4  Scan054
Heavily faded document with an ink stamp in the bottom right corner.10th Jul 1929Box 15 \ 4  Scan055
Query on incorporating modifications for fabric couplings and an exhaust cut-out valve into the first batch of S.S. chassis.15th Jul 1929Box 15 \ 4  Scan056
Failure of fabric couplings on cars used for high-speed continental work.11th Sep 1929Box 15 \ 4  Scan057
The failure modes of fabric couplings and the need for improvements.24th Sep 1929Box 15 \ 4  Scan058
Extract concerning a propeller shaft fouling issue on the S.S. Chassis.1st Aug 1929Box 15 \ 4  Scan059
Query regarding the recommended maintenance interval for propeller shaft universal joints on 20HP and SS chassis.13th Aug 1929Box 15 \ 4  Scan060
Recommendation for propeller shaft lubrication intervals for 20 HP and 40/50 HP chassis.14th Aug 1929Box 15 \ 4  Scan061
Potential issues and replacement policy for Phantom II propeller shaft universal joints.23th Oct 1929Box 15 \ 4  Scan062
Risk of propeller shaft failure and safety features on the 20 HP, Phantom II, and Silver Ghost models.24th Jan 1930Box 15 \ 4  Scan063
Report on oil leakage from the sliding joint of the main universal for the Phantom II and 20/25 HP models.26th May 1930Box 15 \ 4  Scan064
The failure of fabric couplings on the Phantom II and the introduction of a new rivetted design.23th May 1930Box 15 \ 4  Scan065
Potential issue with the Hardy Coupling fitted to 'Phantom II' cars.27th May 1930Box 15 \ 4  Scan066
On issues with the fabric coupling on early Phantom II chassis and the recommended modification to prevent crankcase damage.28th May 1930Box 15 \ 4  Scan067
Trouble with fabric couplings and bolt fractures on Phantom II cars.2nd Jun 1930Box 15 \ 4  Scan068
Standardisation of chassis parts, replacing screws and ferrules with rivetted plates on fabric couplings.22th May 1930Box 15 \ 4  Scan069
Use of cantilever pins versus rivets on fabric couplings.26th Aug 1930Box 15 \ 4  Scan070
Failure rates of different engine coupling types on the Phantom II.25th Aug 1930Box 15 \ 4  Scan071
The failure of a fabric engine coupling on chassis 18-XJ and a discussion of its design.2nd Oct 1930Box 15 \ 4  Scan072
Emergency modification to a coupling using three discs.14th Oct 1930Box 15 \ 4  Scan073
Request to prepare standard, Hardy type A, and bulge couplings for a fabric coupling joggling rig.14th Oct 1930Box 15 \ 4  Scan074
Recommendation to circulate a Depot Sheet about fitting the latest rivetted engine couplings on Phantom I & II models.18th Dec 1930Box 15 \ 4  Scan075
Failures, benefits, and proposed improvements for fabric couplings on the Phantom II model.20th Apr 1931Box 15 \ 4  Scan076
Need to increase propeller shaft diameter to prevent whirling at higher RPMs.4th Nov 1931Box 15 \ 4  Scan077
Letter from Cadillac Motor Car Company providing information on propeller shaft assemblies for high-speed boats.21th Oct 1931Box 15 \ 4  Scan078
Specifications for car shafts, including balance, RPM, and thickness.19th Oct 1931Box 15 \ 4  Scan079
Letter discussing drive shaft tube critical speed calculations and specifications.19th Oct 1931Box 15 \ 4  Scan080
Standardisation of a 2.750' diameter propeller shaft to prevent whirling.12th Aug 1932Box 15 \ 4  Scan081
Standardisation form for a chassis part, detailing its implementation, schedule and cost.15th Sep 1928Box 15 \ 4  Scan082
Reliability of the Synchromesh Fabric Coupling Bolts on the Phantom II.19th Aug 1932Box 15 \ 4  Scan083
Failure of Hardy fabric couplings on Phantom II cars and suggesting a design modification to reduce replacement costs.20th Sep 1932Box 15 \ 4  Scan084
Alternate proposals for a torsionally flexible coupling.27th Oct 1932Box 15 \ 4  Scan085
Standardisation of an engine coupling to address complaints of fabric disintegration.9th Feb 1933Box 15 \ 4  Scan086
Introduction of a new part for a 'P' Series chassis.2nd Sep 1933Box 15 \ 4  Scan087
Request to develop a needle bearing propeller shaft for the Phantom II model based on a successful test.20th Oct 1933Box 15 \ 4  Scan088
Request to test and modify the rear universal joint on experimental car 22-EX to measure axle twist and spring deflection.19th Apr 1934Box 15 \ 4  Scan089
Modifications to cure fouling on Phantom propeller shafts.9th May 1934Box 15 \ 4  Scan090
Recommendation for Vacuum Motor Grease No. 2 for needle type bearings on 20/25 & 40/50 HP chassis universal joints.30th May 1934Box 15 \ 4  Scan091
Standardisation of a propeller shaft with needle bearings in mechanics joints.10th May 1934Box 15 \ 4  Scan092
Estimated cost for extra jigs, tools, and equipment for a modification instructed for the 'S.2' series.25th May 1934Box 15 \ 4  Scan093
Investigation report into a universal joint failure on a PH.II Chassis after a customer complaint of noise in the transmission.20th Jul 1934Box 15 \ 4  Scan094
Depot sheet concerning oil loss from Phantom II rear universal joints and the required modification.24th Jul 1934Box 15 \ 4  Scan095
Modifications and leaking issues with Ph.II rear universal joints.24th Jul 1934Box 15 \ 4  Scan096
Standardisation of a new, shorter propeller shaft to suit a new gearbox.16th Oct 1934Box 15 \ 4  Scan097
Cost estimate and production note regarding jigs and tools for the 'D' series chassis.20th Oct 1934Box 15 \ 4  Scan098
Instructions for modifications to the gearbox and the starter on engine.1st Mar 1926Box 15 \ 5  Scan001
Progress report on a detachable connection, lighter clutch, propeller shaft, and gearbox design.29th Mar 1926Box 15 \ 5  Scan002
With a sketch proposing the use of electric welding for the EAC.7 gearbox striking forks to simplify the manufacturing process.29th Mar 1926Box 15 \ 5  Scan003
Inquiry about experimental results for straight ground teeth in constant mesh gearboxes for the EAC. 7 design.29th Mar 1926Box 15 \ 5  Scan004


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