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
Technical document detailing the nature and characteristics of wheel hop.25th Feb 1936Box 170 \ 3  img015
Analysis of wheel fight and wheel hop, focusing on the effects of load and wishbone suspension height.25th Feb 1936Box 170 \ 3  img016
Page discussing the preference for low frequency fight and engine tuning to reduce wheel wobble and shimmy.25th Feb 1936Box 170 \ 3  img017
Analysis of high-frequency vibration, wheel fight, and steering mechanisms.25th Feb 1936Box 170 \ 3  img018
Technical report on steering geometry, wheel fight, and the effects of wishbone suspension.25th Feb 1936Box 170 \ 3  img019
Page detailing causes, palliatives, and cures for steering and suspension issues like low-speed wobble and high-frequency fight.25th Feb 1936Box 170 \ 3  img020
Notes on wheel fight related to steering stiffness values and gear types.4th Mar 1936Box 170 \ 3  img021
Graph illustrating wheel fight characteristics, showing amplitude against frequency cycles.4th Mar 1936Box 170 \ 3  img022
Diagram of a steering column stiffness measurement setup.24th Apr 1936Box 170 \ 3  img023
Technical document explaining the findings on wheel fight, wobble, and shimmy in steering systems.26th Mar 1936Box 170 \ 3  img024
The principles of tuning a steering mechanism to avoid wheel fight, wobble, and shimmy.26th Mar 1936Box 170 \ 3  img025
Steering gear beliefs, the causes of 'rubbery' steering, and Dubonnet suspensions.26th Mar 1936Box 170 \ 3  img026
Experiments with shimmy shackles and engine mounts to address wheel fight issues.5th Jun 1935Box 170 \ 3  img027
Notes on investigations into the mechanics of low speed wobble and shimmy, focusing on self-energised oscillations.5th Jun 1935Box 170 \ 3  img028
Technical document detailing the causes and types of oscillation and wobbling in a vehicle.5th Jun 1935Box 170 \ 3  img029
Blueprint diagram illustrating the phenomenon of wheel shimmy on a vehicle's front axle.5th Jun 1935Box 170 \ 3  img030
Technical analysis of the forces and torques involved in front wheel shimmy.5th Jun 1935Box 170 \ 3  img031
Blueprint diagram illustrating the forces and geometry of a vehicle's front and rear axles.5th Jun 1935Box 170 \ 3  img032
Technical analysis of wheel shimmy and tramp, including diagrams of wheel movement.14th Jul 1933Box 170 \ 3  img033
Technical analysis of the dynamics of wheel shimmy, covering its starting and finishing conditions.14th Jul 1933Box 170 \ 3  img034
List of conclusions drawn from slow motion road tests about the causes and conditions of wheel shimmy.14th Jul 1933Box 170 \ 3  img035
Technical analysis of wheel shimmy, frame stiffening, and torsional frequencies in vehicle chassis design.14th Jul 1933Box 170 \ 3  img036
Technical document detailing the causes and characteristics of low-speed wobble in vehicles.14th Jul 1933Box 170 \ 3  img037
Blueprint diagram illustrating the approximate front wheel motion and low-speed wobble of a vehicle.14th Jul 1933Box 170 \ 3  img038
Analysis of vehicle wobble observed on the road and on smooth drums using a stroboscope.14th Jul 1933Box 170 \ 3  img039
Page discussing precession torque on wheels, illustrated with a diagram of right front wheel motion.14th Jul 1933Box 170 \ 3  img040
Analysis of vehicle roll and kingpin forces, comparing pusher and puller Dubonnet suspension systems.14th Jul 1933Box 170 \ 3  img041
Analysis of wheel wobble and caster angles, comparing a design with a Master Chevrolet.14th Jul 1933Box 170 \ 3  img042
Diagram illustrating forces and torques on a tyre, including side thrust from camber and slip angle.14th Jul 1933Box 170 \ 3  img043
Analysis of vehicle dynamics, focusing on lateral and rotary acceleration, and the causes and variations of wheel wobble.14th Jul 1933Box 170 \ 3  img044
Blueprint diagram illustrating a car's approximate axis and center of gravity during movement.14th Jul 1933Box 170 \ 3  img045
Page from a report analyzing the causes and potential cures for vehicle wheel wobble or shimmy.14th Jul 1933Box 170 \ 3  img046
Investigation into wheel wobble, focusing on the effects of tire pressure, speed, and engine mounts.14th Jul 1933Box 170 \ 3  img047
Weight balance around the kingpin and the effects of caster on steering.14th Jul 1933Box 170 \ 3  img048
Technical analysis of gyroscopic effects on wheel wobble and steering mechanisms.14th Jul 1933Box 170 \ 3  img049
Technical memo about rolling resistance, inertia torque, and their effects on steering geometry and wheel wobble.14th Jul 1933Box 170 \ 3  img050
Analysis of wheel wobble, its causes, and how it is distinguished from shimmy.14th Jul 1933Box 170 \ 3  img051
Page from a technical note discussing the causes and mitigations of wheel wobble and shimmy.20th Jun 1935Box 170 \ 3  img052
The influence of an engine mount on wobble for a 1935 Chevrolet Master, including a blueprint diagram.20th Jun 1935Box 170 \ 3  img053
Tests conducted to diagnose and resolve a vehicle wobble issue.20th Jun 1935Box 170 \ 3  img054
Test report detailing the effects of drag link and front rubber adjustments on steering wobble.20th Jun 1935Box 170 \ 3  img055
Blueprint of a friction damper assembly mounted to a cylinder block.20th Jun 1935Box 170 \ 3  img056
The effects of dampers, friction, and engine mounts on steering wobble and wheel fight.20th Jun 1935Box 170 \ 3  img057
Letter to General Motors discussing the causes of wheel wobble and shimmy.15th Jul 1935Box 170 \ 3  img058
Illustrations and explanations of different types of wheel wobble and shimmy vibrations.15th Jul 1935Box 170 \ 3  img059
Analysis of the causes, systems, and frequencies of low-speed wobble and high-speed shimmy in automobiles.15th Jul 1935Box 170 \ 3  img060
The causes, characteristics, and remedies for different types of steering wobble and shimmy.15th Jul 1935Box 170 \ 3  img061
Analysis of wheel fight, its causes related to steering gear, chassis stiffness, and testing methods.15th Jul 1935Box 170 \ 3  img062
Technical analysis of wheel wobble, its causes, and potential solutions including engine mounting.15th Jul 1935Box 170 \ 3  img063
Factors and potential cures for wheel fight and shimmy in a vehicle.17th Jun 1931Box 170 \ 3  img064
Technical note listing the various factors that affect vehicle wobble.17th Jun 1931Box 170 \ 3  img065
Analysis of factors causing vehicle wobble, including tire pressure, frame stiffness, and wheel overhang.17th Jun 1935Box 170 \ 3  img066
The fundamental conditions of 'wheel fight' on rough roads and methods for tuning the steering mechanism.14th Mar 1936Box 170 \ 3  img067
Technical analysis of wheel fight, comparing Dubonnet and wishbone suspension types and steering mechanisms.14th Mar 1936Box 170 \ 3  img068
Technical note discussing the 'swing axle' effect, wheel fight, and suspension design.17th Apr 1936Box 170 \ 3  img069
Letter to Mr. Olley arranging a visit to Derby, offering a Phantom III for transport.17th Apr 1936Box 170 \ 3  img070
Typed telegram to Olley at Brown's Hotel regarding travel plans and a meeting.2nd May 1936Box 170 \ 3  img071
Letter to M. Olley discussing valve spring technology and shot-blasting methods learned from American contacts.2nd May 1936Box 170 \ 3  img072
Letter from Chevrolet to Cadillac regarding a blueprint for Cylinder Head #537981 in response to questions from Rolls-Royce.21th Feb 1936Box 170 \ 3  img073
Letter requesting information on American cast-iron casting techniques and weights for a Chevrolet cylinder head.30th Jan 1936Box 170 \ 3  img074
Letter discussing the foundry development and casting specifications for Cylinder Head part #637981.17th Feb 1936Box 170 \ 3  img075
Information on 'Autosyn' self-synchronising motors used for measuring the angle of front wheels on skid-pad tests.21th May 1936Box 170 \ 3  img076
Procedure for calibrating front wheel steering angle using a 'Bean' axle scale and a transit.21th May 1936Box 170 \ 3  img077
Procedure for establishing the true straight-travel axis of a car using a transit and a flat plate setup.21th May 1936Box 170 \ 3  img078
Procedure for measuring suspension friction and calculating the front wheel slip angle.21th May 1936Box 170 \ 3  img079
Page detailing the procedure for vehicle dynamics testing, focusing on cornering and data collection.21th May 1936Box 170 \ 3  img080
Analysis of vehicle handling, with a graph plotting steering angle against lateral acceleration to show understeer and oversteer characteristics.21th May 1936Box 170 \ 3  img081
Letter discussing car handling preferences, understeer, oversteer, and stabilizers.21th May 1936Box 170 \ 3  img082
Advertisement and specification sheet for the 'Autosyn' self-synchronizing motor by Pioneer Instrument Company.21th May 1936Box 170 \ 3  img083
Technical drawing and wiring diagram for an Autosyn Motor, Type 769 B.21th May 1936Box 170 \ 3  img084
Photograph of a Type 851 motor component.25th May 1936Box 170 \ 3  img085
Letter to Vauxhall Motors describing a spring testing machine made by Averys.25th May 1936Box 170 \ 3  img086
Letter from Vauxhall Motors requesting particulars of a load-deflection testing machine.2nd May 1936Box 170 \ 3  img087
With type, weight, and machine number specifications.10th Jun 1936Box 170 \ 3  img088
Thank you letter on 'Cunard White Star 'Berengaria'' letterhead.10th Jun 1936Box 170 \ 3  img089
Solutions for vehicle steering and suspension problems, referencing a Vauxhall component.10th Jun 1936Box 170 \ 3  img090
List of vehicle suspension and frame improvements.6th Jul 1936Box 170 \ 3  img091
Letter to M. Olley of Cadillac discussing the challenges of car stability and steering in side winds, specifically regarding oversteer and slip angles.6th Jul 1936Box 170 \ 3  img092
The concluding page of a letter with an apology for going off-topic.6th Jul 1936Box 170 \ 3  img093
Letter from Cadillac discussing vehicle handling characteristics in side winds, particularly understeer and oversteer.14th Jul 1936Box 170 \ 3  img094
Letter to M. Olley of Cadillac Motor Co. Ltd. concerning a skid pan and anticipating a major European crisis.3rd Aug 1936Box 170 \ 3  img095
Letter to Cadillac inquiring about tyre wear, steering characteristics of front-wheel-drive cars, and other technical matters.13th Aug 1936Box 170 \ 3  img096
Letter to M. Olley at Cadillac discussing unusual tyre wear on a long-distance record-breaking car and suspension arrangements for a sprint car.24th Sep 1936Box 170 \ 3  img097
Letter from G.E.T. Eyston discussing suspension and tyre wear issues on land speed record cars.21th Sep 1936Box 170 \ 3  img098
Page 2 of a letter from George Eyston questioning the justification for an articulated rear axle and asking for suspension improvements.24th Sep 1936Box 170 \ 3  img099
Letter from Maurice Olley of Cadillac regarding the characteristics of front-wheel drive vehicles, including tire traction and suspension issues.24th Sep 1936Box 170 \ 3  img100
Letter to Cadillac discussing G.M. Babbitt material, bearing shells, and an experimental car with torsion rods.8th Oct 1936Box 170 \ 3  img101
Letter requesting 1937 Cadillac and La Salle service manuals from The Cadillac Motor Co. Ltd.16th Oct 1936Box 170 \ 3  img102
Letter from Cadillac Motor Car Company regarding roll-couple distribution and tire wear on the Eyston car.31th Oct 1936Box 170 \ 3  img103
The handling faults of front-wheel drive cars at high speed and potential cures.31th Oct 1936Box 170 \ 3  img104
Technical memorandum discussing vehicle handling, including understeer, oversteer, steering geometry, and caster.31th Oct 1936Box 170 \ 3  img105
Hand-drawn graph showing the approximate curve of cornering power with load.2nd Nov 1936Box 170 \ 3  img106
Night letter cable to Cadillac Motors requesting information on Babbitt technique and fatigue improvement.2nd Nov 1936Box 170 \ 3  img107
Letter to M. Olley of Cadillac discussing the competition between Dubonnet and Wishbone suspension systems.2nd Nov 1936Box 170 \ 3  img108
General Motors' Babbitt technique and alternative materials like Aluminium Alloy.2nd Nov 1936Box 170 \ 3  img109
Letter from Cadillac regarding vehicle handling tests, the use of a skid pad, and the PIII's oversteer characteristics.17th Nov 1936Box 170 \ 3  img110
Letter to the Cadillac Motor Car Company regarding Eyston's car, skid-pan measurements, and handling tests.16th Dec 1936Box 170 \ 3  img111
Letter to M. Olley of Cadillac regarding a trip to the USA to compare a Phantom III model with American productions.22th Dec 1936Box 170 \ 3  img112
Letter from Cadillac Motor Car Company discussing steering and slip angle curves.31th Dec 1936Box 170 \ 3  img113
Analysis of steering characteristics and handling dynamics with comparisons to other car models.31th Dec 1936Box 170 \ 3  img114


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