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
Inquiring about the performance of untested modifications to the lubrication of the SS clutch.10th Jan 1930Box 20 \ 1  Scan053
Standardisation of chassis parts, specifically the automatic oiling of the clutch spigot bearing from the gearbox.6th Jun 1930Box 20 \ 1  Scan054
Modification to Phantom clutches to prevent oil getting on the clutch fabric.1st Sep 1930Box 20 \ 1  Scan055
Standardisation of automatic oiling for the clutch spigot from the gearbox.15th Jan 1931Box 20 \ 1  Scan056
Costs and implementation plan for fitting a new part to a chassis.12th Feb 1931Box 20 \ 1  Scan057
Potential introduction of a lightened flywheel and the implications of signing its standardisation sheet.15th Jun 1931Box 20 \ 1  Scan058
Follow-up memo chasing a reply regarding Standardisation Sheet No. X.872 for a lightened flywheel.26th Jun 1931Box 20 \ 1  Scan059
Questioning the purpose of a Standardisation Sheet for a lightened flywheel not being introduced due to cost.15th Jun 1931Box 20 \ 1  Scan060
Recommendation to cease using the automatic clutch spigot lubrication system due to oil flooding and clutch slippage issues.20th Nov 1931Box 20 \ 1  Scan061
Experiments to regulate automatic clutch spigot lubrication before abandoning the system.24th Nov 1931Box 20 \ 1  Scan062
Postponing the automatic clutch spigot lubrication on the 40/50 model due to oil leaks reported by the Test Department.3rd Dec 1931Box 20 \ 1  Scan063
10,000-mile test in France, detailing a knock from the torque reaction damper and clutch oil leakage issues.3rd Dec 1931Box 20 \ 1  Scan064
Directive to abandon the automatic clutch spigot lubrication system for 20/25 HP and 40/50 HP models.4th Dec 1931Box 20 \ 1  Scan065
Issues with the torque re-action damper and oil on the clutch during a 10,000-mile test in France.8th Dec 1931Box 20 \ 1  Scan066
Meeting minutes discussing a customer's steering failure due to neglect and proposed actions.7th Nov 1911Box 20 \ 2  Scan001
Request regarding worn ball joints on the steering connecting rod of Colonel Stewart Mackenzie's car, number 958, and the fitting of new leather covers.8th Nov 1911Box 20 \ 2  Scan002
Decision not to supply parts free of charge for Colonel Stewart Mackenzie's car.9th Nov 1911Box 20 \ 2  Scan003
Meeting minutes discussing a steering gear failure on Mrs. Nicholls' car, the potential for reoccurrence, and the instruction for a new part design.16th Nov 1911Box 20 \ 2  Scan004
Committee discussion regarding steering joint safety and potential design improvements.2nd Nov 1911Box 20 \ 2  Scan005
Departmental memo discussing a potential car fault that could cause a serious accident, referencing an issue on Mrs. Micholls' car.2nd Nov 1911Box 20 \ 2  Scan006
Extract from a memo regarding a steering tube replacement due to a stripped thread caused by a loose lock nut and neglect.2nd Nov 1911Box 20 \ 2  Scan007
Extract from a note regarding an accident with a steering pivot, discussed at the 96th Technical Committee meeting.21th Dec 1911Box 20 \ 2  Scan008
Instruction seeking an opinion on a new method for locking the steering tube lock nut.27th Dec 1911Box 20 \ 2  Scan009
Departmental memo discussing weaknesses in steering gear and proposing a new straining test for all steering parts.22th Mar 1912Box 20 \ 2  Scan010
Departmental memo discussing the testing of steering components and proposing a special connecting tube with an overload spring.23th Jan 1912Box 20 \ 2  Scan011
Proposing a scheme to test the steering gear on every chassis.1st Apr 1912Box 20 \ 2  Scan012
Proposed testing procedures for steering gear components.12th Apr 1912Box 20 \ 2  Scan013
Proposal for a simple and inexpensive method for testing the steering gear assembly using levers, ropes, and weights.12th Apr 1912Box 20 \ 2  Scan014
By F.H. Royce discussing the testing of forgings and steering gear to develop a lighter, stronger chassis.18th Apr 1912Box 20 \ 2  Scan015
Mr Royce's suggestion for a new apparatus to stress-test steering gear levers.18th Apr 1912Box 20 \ 2  Scan016
Outlining a scheme for testing complete steering gear.18th Apr 1912Box 20 \ 2  Scan017
Procedure for stress testing steering gear using a system of ropes and weights.18th Apr 1912Box 20 \ 2  Scan018
To Mr Royce requesting inspection and criticism of a special locking arrangement for steering ball sockets for potential standardization.26th Jul 1912Box 20 \ 2  Scan019
Inspection report regarding an accident to chassis 935, focusing on the steering components and springs.12th Sep 1912Box 20 \ 2  Scan020
Analysis of vehicle failure, speculating on the cause of a broken spring and axle movement following a potential collision.12th Sep 1912Box 20 \ 2  Scan021
Statement on the difficulties of conducting an accident inspection if the vehicle has been dismantled.20th Jun 1913Box 20 \ 2  Scan022
Internal query and response regarding steering stiffness on trials cars.20th Jun 1913Box 20 \ 2  Scan023
Instructions regarding stiffness of steering and the suitability of certain oils for the pivots.21th Jun 1913Box 20 \ 2  Scan024
Instruction sheet regarding an issue with a car's stiffness.28th Feb 1913Box 20 \ 2  Scan025
Instructions regarding a complaint of steering becoming stiff after continuous running.21th Jun 1913Box 20 \ 2  Scan026
Instructions clarifying the correct lubrication procedure for the pivot bushes, addressing a common misunderstanding.11th Nov 1912Box 20 \ 2  Scan027
Instruction note regarding insufficient lubrication of bottom bushes on 'Trials cars' and the need for an experiment to investigate the resulting stiffness.11th Nov 1912Box 20 \ 2  Scan028
Stiff steering on trials cars, attributing the issue to improper lubrication of the steering pivots.23th Jun 1913Box 20 \ 2  Scan029
Departmental memo addressed to Mr. Mercer, forwarding correspondence from Mr. Northey and requesting an experiment be conducted.23th Jun 1913Box 20 \ 2  Scan030
Cover letter regarding a memo on the steering mechanism, requesting experimentation and a report.24th Jun 1913Box 20 \ 2  Scan031
Series of reports on steering mechanism stiffness, steering wobbles, and frame tests.4th Oct 1913Box 20 \ 2  Scan032
Investigation into steering stiffness on Trials cars after a short run, with opinions from the Repair Department.4th Oct 1913Box 20 \ 2  Scan033
Internal report on a steering lubrication issue and a proposed solution using a bronze bush.22th Sep 1913Box 20 \ 2  Scan034
Potential improvements to steering components, focusing on lubrication and material changes.28th Oct 1913Box 20 \ 2  Scan035
Description of the steering gear, including details on the steering tube, joints, column, and wheel operation.24th Nov 1913Box 20 \ 2  Scan036
Proposal to use 3½% Nickel Steel for Steering Tubes on the 2900 and 3000 series.3rd Dec 1913Box 20 \ 2  Scan037
The bumping test of a steering gear, discussing a breakage and suggesting further tests.11th Jun 1914Box 20 \ 2  Scan038
From F.H.R. requesting Mr. Day to improve a piece on current cars and new chassis.11th Jun 1914Box 20 \ 2  Scan039
Complete stripping and examination of severely damaged cars for flaws.3rd Jul 1914Box 20 \ 2  Scan040
The examination of the steering gear of chassis 2301 after prolonged use in France.10th Jul 1914Box 20 \ 2  Scan041
Slow speed steering wobble for Chassis No. 7-CA and a proposed modification.9th Sep 1916Box 20 \ 2  Scan042
Front axle steering wobble and shock damper adjustments for a post-war chassis.3rd Oct 1916Box 20 \ 2  Scan043
CJ to PN discussing road-holding and steering issues with a Trials Landaulette.22th Jan 1920Box 20 \ 2  Scan044
Road handling issues and proposed modifications for a Trials Landaulette car.23th Jan 1920Box 20 \ 2  Scan045
Continued page of a report comparing a vehicle condition to other high-speed cars like Lanchester and Lancia.22th Jan 1920Box 20 \ 2  Scan046
Road-holding and steering difficulties with a Trials Landaulette and another car, questioning the fitment of shock absorbers.22th Jan 1920Box 20 \ 2  Scan047
Comparative steering tests on a 40/50 chassis and the fitting of new shock absorbers to a customer's car.26th Nov 1920Box 20 \ 2  Scan048
Steering difficulties caused by rear spring flexibility and proposing tests.26th Jan 1920Box 20 \ 2  Scan049
Proposal to modify steering pivots by fitting fibre washers to add damping friction, accompanied by a diagrammatic sketch of a side steering tube.26th Jan 1920Box 20 \ 2  Scan050
Investigation into the cause and remedy for faulty steering on trials car 1-LW.26th Jan 1920Box 20 \ 2  Scan051
Unstable steering issues, particularly when driving on tram lines, and proposed solutions.27th Jan 1920Box 20 \ 2  Scan052
The steering of cars at high speeds, discussing the effects of rear spring flexibility, shock absorbers, and weight distribution.27th Jan 1920Box 20 \ 2  Scan053
Racing car suspension, steering geometry, and methods to prevent wheel wobble.27th Jan 1920Box 20 \ 2  Scan054
Proposed modifications to the rear springs and steering system to improve vehicle stability.27th Jan 1920Box 20 \ 2  Scan055
Letter to Maddocks regarding the failure of a shock absorber lever cam and requesting details on the matter.28th Jan 1920Box 20 \ 2  Scan056
Continued letter discussing the testing of shock absorbers and rear springs, with instructions for fitting new parts.31th Jan 1920Box 20 \ 2  Scan057
Bump test rig experiments on rear springs in response to steering complaints.31th Jan 1920Box 20 \ 2  Scan058
Suspension spring tests comparing different types and their effect on axle movement and road holding.31th Jan 1920Box 20 \ 2  Scan059
Spring bump tests, detailing issues with violent bouncing at high speeds and difficulties with road testing due to weather.31th Jan 1920Box 20 \ 2  Scan060
Ongoing tests and comparisons between split and solid springs.9th Feb 1920Box 20 \ 2  Scan061
Vehicle road and rig testing focusing on issues with steering, suspension, and lateral flexibility.1st Feb 1920Box 20 \ 2  Scan062
Telegram from Mr. Royce regarding a steering complaint caused by rear spring flexibility.26th Jan 1920Box 20 \ 2  Scan063
Test report on the negative results of adding friction to the 40/50 chassis steering by replacing ball thrust races with fibre washers.16th Feb 1920Box 20 \ 2  Scan064
Steering issues related to frictionless and split springs, and recommending the fitting of rear shock dampers.20th Feb 1920Box 20 \ 2  Scan065
Steering performance issues, attributing them to road conditions, tyres, and shock dampers rather than split rear springs.20th Feb 1920Box 20 \ 2  Scan066
Car's performance up to 60 mph, noting split springs and missing spring clips after 3,000 miles.20th Feb 1920Box 20 \ 2  Scan067
Steering and springing tests for the 40/50 chassis, investigating instability issues related to centre point steering.20th Feb 1920Box 20 \ 2  Scan068
Steering performance issues related to different types of tyres, specifically Goodyear and Dunlop.20th Feb 1926Box 20 \ 2  Scan069
Steering instability, comparing split vs solid springs and the effects of greasy springs and tyres.1st Feb 1920Box 20 \ 2  Scan070
Light Labourdette body, noting its height and the excellent riding and steering it provides.20th Feb 1920Box 20 \ 2  Scan071
Experimental work on swaying, unstable steering, and steering wobbles.3rd Mar 1920Box 20 \ 2  Scan072
Steering wobble issues caused by Warland demountable rims fitted with Dunlop detachable wire wheels.18th Mar 1920Box 20 \ 2  Scan073
Steering experiments and suggested improvements for PN and Mr. Horlick.12th Apr 1920Box 20 \ 2  Scan074
List of instructions for adjustments to the front axle, springs, and steering components.13th Apr 1920Box 20 \ 2  Scan075
Establishing a standard ¼ inch lean for front steering pivots to achieve the best all-round steering.15th Apr 1920Box 20 \ 2  Scan076
Manufacturing standards and specifications for the lean of front steering pivots.16th Apr 1920Box 20 \ 2  Scan077
Stating that changes to the lean of front steering pivots must be handled via a Standardisation Sheet or by special instructions from Mr. Royce and Mr. Johnson.17th Apr 1920Box 20 \ 2  Scan078
Steering system improvements and proposals for further testing.19th Apr 1920Box 20 \ 2  Scan079
Experimental testing of central point steering with vertical pivots.19th Apr 1920Box 20 \ 2  Scan080
Steering experiments conducted on car 2.EX with reversed Michelin disc wheels.23th Apr 1920Box 20 \ 2  Scan081
Steering system experiments comparing different wheel dishing and pivot pin washer configurations.23th Apr 1920Box 20 \ 2  Scan082
Best arrangement for car steering and the effects of pivot pin friction.23th Apr 1920Box 20 \ 2  Scan083
Solutions for steering oscillation, focusing on additional friction and centre point steering geometry.26th Apr 1920Box 20 \ 2  Scan084
Steering gear improvements, cornering, and modifications for a specific vehicle.26th Apr 1920Box 20 \ 2  Scan085
Continued memo page with an instruction regarding Mr. Northey's car and the author's car.26th Apr 1920Box 20 \ 2  Scan086


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