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
Weight comparison of Peregrine road springs from Firth and Woodhead.28th Dec 1932Box 2 \ 11  B002_X146-page7
Instruction regarding the supply and ordering of new Front Road Springs for the Peregrine II chassis.26th Jan 1933Box 2 \ 11  B002_X146-page8
The correct road spring ratings for different types of Peregrine saloon cars.30th Jan 1933Box 2 \ 11  B002_X146-page9
The ordering and replacement of front springs for the Peregrine II chassis.11th Feb 1938Box 2 \ 11  B002_X146-page10
Meeting notes discussing an accident caused by a steering pivot failure on a customer's car and proposed preventative inspections.8th Dec 1911Box 2 \ 12  B002_X168-page001
Committee decision on steering gear inspection protocols following an accident involving Mr. Mortimer Singer's car.3rd Apr 1912Box 2 \ 12  B002_X168-page002
Instruction to dismantle and investigate the cause of a bent front pivot section.3rd Apr 1912Box 2 \ 12  B002_X168-page003
Request for a report on the strength of standard steering pivots, which are failing after a lightening modification.1st Apr 1912Box 2 \ 12  B002_X168-page004
Departmental memo concerning two breakages on front axle pivots and the subsequent requirement for destruction and stress testing.27th Jan 1913Box 2 \ 12  B002_X168-page005
Potential modification of the torque tube test apparatus.27th Jan 1913Box 2 \ 12  B002_X168-page006
Bumping and revolving tests on front wheels and pivots due to torsional stress.6th Feb 1913Box 2 \ 12  B002_X168-page007
Internal instruction requesting comparative strength tests on old and new steering pivots.6th Feb 1913Box 2 \ 12  B002_X168-page008
Experiment testing the deflection and permanent set of a steering pivot under load.16th May 1938Box 2 \ 12  B002_X168-page009
Load test report on a stub axle pivot, detailing measurement data under increasing loads and observations on failure.16th May 1938Box 2 \ 12  B002_X168-page010
Test report detailing deflection and permanent set measurements under increasing weight for an old type steering pivot, resulting in a stub axle fracture.26th Feb 1913Box 2 \ 12  B002_X168-page011
Departmental memo outlining Mr Royce's suggestion for a bumping test on a front axle.26th Feb 1913Box 2 \ 12  B002_X168-page012
New bumping test for front axle pivots, as suggested by Mr Royce.27th Feb 1913Box 2 \ 12  B002_X168-page013
Failure of front axle pivots and proposing modifications to the design and materials to improve strength.27th Feb 1913Box 2 \ 12  B002_X168-page014
Testing front axle pivots, comparing different types under torsional stress.1st Jul 1932Box 2 \ 12  B002_X168-page015
Cause of a broken stub axle pivot and proposed design modifications.1st Jul 1932Box 2 \ 12  B002_X168-page016
Design of a broken stub axle and spring buffers.13th Dec 1910Box 2 \ 12  B002_X168-page017
Instructions from Mr. Royce on experiments to test and break front axle pivots.5th Mar 1913Box 2 \ 12  B002_X168-page018
Instructions for a series of tests and analyses on welded tubes, including stress tests and diagrammatic summaries.28th Feb 1913Box 2 \ 12  B002_X168-page019
The reproduction and testing of a fracture in steering pivots.6th Mar 1913Box 2 \ 12  B002_X168-page020
Outlining seven action points to address a component failure, including material testing, design changes, and reinforcement.1st May 1913Box 2 \ 12  B002_X168-page021
Steering pivot tests for experimental car 168, concluding that continuous turning is not the cause of pivot breakage.12th Mar 1913Box 2 \ 12  B002_X168-page022
Report investigating the cause of breaking and bending in steering pivots.12th Mar 1913Box 2 \ 12  B002_X168-page023
Tension tests on a cross steering tube under various road conditions.10th Dec 1931Box 2 \ 12  B002_X168-page024
Road tests concerning a Swedish iron axle, pivot breakages, and steering dynamics.10th Dec 1931Box 2 \ 12  B002_X168-page025
Stress tests conducted on steering pivots which resulted in a crack forming after running over obstacles.12th Mar 1913Box 2 \ 12  B002_X168-page026
Request for two experiments to be conducted on front pivots and steering components to investigate fractures.10th Mar 1913Box 2 \ 12  B002_X168-page027
Investigation into the cause of a fractured pivot.10th Mar 1917Box 2 \ 12  B002_X168-page028
Front pivot issues caused by unbalanced tyres and a proposal for a test to diagnose the problem.25th Mar 1929Box 2 \ 12  B002_X168-page029
To Mr. Johnson regarding progress on front pivots and Dunlop wheels.14th Mar 1913Box 2 \ 12  B002_X168-page030
Telegram from Royce requesting tests on pivot points and spring buffer designs.17th Mar 1913Box 2 \ 12  B002_X168-page031
Test report on the durability and safety of 'present type' pivots after the failure of the 'old type' pivots.17th Mar 1913Box 2 \ 12  B002_X168-page032
Potential issues with cross tubes on the 1700, 1800, and 1900 series Colonial cars.24th Oct 1922Box 2 \ 12  B002_X168-page033
Preliminary report on experimental tests of stronger pivots and the despatch of blueprints for inspectors.17th Mar 1913Box 2 \ 12  B002_X168-page034
To postpone an Axle Dropping Test due to the experiment being too slow.25th Mar 1930Box 2 \ 12  B002_X168-page035
Investigation, testing, and proposed design solutions for stub axle fractures.25th May 1913Box 2 \ 12  B002_X168-page036
Replacement of old pivots with a reinforced type based on recent test results.18th Mar 1913Box 2 \ 12  B002_X168-page037
Typed page discussing a conclusion on a line of action to be taken.13th Mar 1913Box 2 \ 12  B002_X168-page038
Telegram instructing the recipient to prepare drawings showing fractures for distribution.13th Mar 1913Box 2 \ 12  B002_X168-page039
Telegram warning about potential cracks in car pivots if a 'caniveau' (gutter) is hit at high speed.18th Mar 1913Box 2 \ 12  B002_X168-page040
Telegram from Paris regarding altering designs following a discovery.30th Aug 1906Box 2 \ 12  B002_X168-page041
Final report on experimental steering pivot tests conducted on a track.18th Mar 1913Box 2 \ 12  B002_X168-page042
Inspection notes on damage to a Cross Tube and Bottom Levers.18th Mar 1913Box 2 \ 12  B002_X168-page043
Material selection, testing, and improvement of front axle pivots.25th Mar 1912Box 2 \ 12  B002_X168-page044
Post Office Telegram regarding a design change for car axle pivots.12th Mar 1913Box 2 \ 12  B002_X168-page045
Confirmation of a telegram sent from the Nightingale Road, Derby office.7th Mar 1941Box 2 \ 12  B002_X168-page046
Blank confirmation of telegram form.7th Mar 1941Box 2 \ 12  B002_X168-page047
Blank confirmation of telegram form from the Nightingale Road, Derby office.25th May 1928Box 2 \ 12  B002_X168-page048
Design specifications for front pivots, focusing on weight reduction, strength, and bore dimensions.25th May 1928Box 2 \ 12  B002_X168-page049
Potential improvements and solutions for front axles to reduce stress and the risk of fracture.25th Mar 1918Box 2 \ 12  B002_X168-page050
Cause of broken pivots being an alteration to the cross steering tube and the need for new dies.18th Apr 1915Box 2 \ 12  B002_X168-page051
Temporary stoppage of forgings for the stub axle.1st Mar 1933Box 2 \ 12  B002_X168-page052
Final report detailing actions and suggestions for material and design improvements following a component failure.20th Mar 1913Box 2 \ 12  B002_X168-page053
Alteration to a steering box pendulum lever and a safety directive for cars on the road.14th Feb 1922Box 2 \ 12  B002_X168-page054
Typed memo regarding pivot design changes based on a telegram from Mr. Royce, and the subsequent drawing distribution.20th Mar 1913Box 2 \ 12  B002_X168-page055
Progress report to Mr. Wormald detailing car orders, work progress, and technical challenges.20th Mar 1913Box 2 \ 12  B002_X168-page056
Telegram from Paris requesting a copy of document SML 1813.28th Mar 1913Box 2 \ 12  B002_X168-page057
Departmental memo regarding the safety of front axle pivots and experiments with elastic cross steering tubes for cars pre-chassis 1900.25th Mar 1913Box 2 \ 12  B002_X168-page058
Telegram about the results of an experiment with buffer springs, requesting a written report.4th Dec 1913Box 2 \ 12  B002_X168-page059
Typed letter to Mr Johnson regarding a telegram from Paris which contained a clerical error.26th Mar 1913Box 2 \ 12  B002_X168-page060
Page 2 of a letter regarding an unavoidable delay and wiring a recipient.1st Nov 1921Box 2 \ 12  B002_X168-page061
Telegram from Johnson in Paris to Royce in Derby, requesting a copy of a memo regarding steering pivots.27th Mar 1913Box 2 \ 12  B002_X168-page062
Departmental memo confirming the despatch of a telegram to clarify a previous communication about steering pivots.26th Mar 1913Box 2 \ 12  B002_X168-page063
Letter to Mr Johnson apologising for a delay in supplying memos regarding axle pivots.26th Mar 1913Box 2 \ 12  B002_X168-page064
Typed letter regarding the forwarding of a memo and a list of Repair Shop inspectors.26th Mar 1913Box 2 \ 12  B002_X168-page065
Memo detailing work on a car, including replacing accumulators and a plug.29th Mar 1913Box 2 \ 12  B002_X168-page066
Experiments with spring buffers in conjunction with old type pivots.29th Mar 1913Box 2 \ 12  B002_X168-page067
Results and issues encountered during steering pivot tests.27th Mar 1913Box 2 \ 12  B002_X168-page068
Telegram regarding progress on buffer spring tests and acquiring a variety of springs for track testing.28th Mar 1913Box 2 \ 12  B002_X168-page069
Failure in the cross steering tube and potential modifications to prevent future issues.1st Nov 1923Box 2 \ 12  B002_X168-page070
Departmental memo detailing the results of a tensile test on a broken front axle pivot.2nd Apr 1913Box 2 \ 12  B002_X168-page071
Steering pivot tests conducted on a track to determine cracking times under various conditions.2nd Apr 1913Box 2 \ 12  B002_X168-page072
Test report detailing variations in cracking pivots and the failure of spring leaves during track testing.2nd Apr 1913Box 2 \ 12  B002_X168-page073
Steering pivot tests detailing the methodology and comparative results.2nd Apr 1913Box 2 \ 12  B002_X168-page074
Test report detailing the durability and fracture points of different pivot types under various conditions.2nd Apr 1913Box 2 \ 12  B002_X168-page075
Results of stress and failure tests on a new reinforced steering pivot.4th Apr 1918Box 2 \ 12  B002_X168-page076
Urgent instruction sheet regarding a cross-steering tube, including a diagram and specifications.4th Apr 1918Box 2 \ 12  B002_X168-page077
Urgent replacement of faulty axle pivots, including actions taken and the number of cars affected.4th Apr 1913Box 2 \ 12  B002_X168-page078
Axle pivot fractures, requesting a list of cars and a special examination of those in France.4th Apr 1913Box 2 \ 12  B002_X168-page079
Departmental memo concerning an investigation into pivot breakages, revealing errors in early record-keeping and drawings.5th Apr 1913Box 2 \ 12  B002_X168-page080
Design modification to pivots (C471/2) for the 700 series, where a change reduced their strength, causing a weakness in the cars.16th Apr 1913Box 2 \ 12  B002_X168-page081
Experimental Department weekly report detailing on-track testing and failures of steering pivots.10th Apr 1913Box 2 \ 12  B002_X168-page082
Modifications to the standard front axle to accommodate wood wheels.12th Apr 1913Box 2 \ 12  B002_X168-page083
Vehicle modifications and ongoing tests on steering pivots, balance weights, and valve springs.24th Apr 1918Box 2 \ 12  B002_X168-page084
Weak design and failure of front axle pivots.24th Apr 1918Box 2 \ 12  B002_X168-page085
Cover note for a final report on an experiment involving steering pivots fitted with spring bushes.22th Apr 1913Box 2 \ 12  B002_X168-page086
Final report on track testing steering pivots and cross steering tubes with spring buffers.22th Apr 1913Box 2 \ 12  B002_X168-page087
Component breakages and failures discovered during a three-week vehicle durability test.22th Apr 1913Box 2 \ 12  B002_X168-page088
Front axle pivots for Chassis 2301.22th Apr 1913Box 2 \ 12  B002_X168-page089
Telegram about the ineffectiveness of spring buffers in a cross steering tube.25th Apr 1913Box 2 \ 12  B002_X168-page090
Telegraph message concerning a cross tube experiment with other makes of cars for strength.15th Apr 1929Box 2 \ 12  B002_X168-page091
Relaying a telegram from Mr. Royce regarding an experiment on axle pivots and steering tube elasticity.26th Apr 1913Box 2 \ 12  B002_X168-page092
Relaying a wire from Mr Johnson regarding steering pivot fractures and requesting an urgent reply.28th Apr 1913Box 2 \ 12  B002_X168-page093
Telegraph message regarding a steering pivot test and clearance for the steering tube on a chassis.28th Apr 1915Box 2 \ 12  B002_X168-page094
Post Office Telegraph instructing to find the cause of a fracture.26th Dec 1917Box 2 \ 12  B002_X168-page095
Instruction sheet with a drawing and dimensions for manufacturing an experimental bent tube.29th Apr 1913Box 2 \ 12  B002_X168-page096


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