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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Technical document detailing spring load requirements and washer specifications to eliminate high-speed wobbles.17th Nov 1928Box 12 \ 1  01-page104
Continued report page discussing pressure valves and dynamic restriction tests.17th Nov 1928Box 12 \ 1  01-page105
Graph plotting load versus deflection for spring F54807 under high and low pressure conditions.17th Nov 1928Box 12 \ 1  01-page106
Blueprint showing two cross-sectional views of a mechanical component with dimensional annotations.19th Nov 1928Box 12 \ 1  01-page107
Failures of the front axle control damper and correcting a previous communication.19th Nov 1928Box 12 \ 1  01-page108
Faint drawing of a frame or fuselage component.19th Nov 1928Box 12 \ 1  01-page109
Blueprint diagram illustrating a fracture on a lever near the Woodruff key.21th Nov 1928Box 12 \ 1  01-page110
Potential air pocket issues in an 'SS' Axle Control Damper design.21th Nov 1928Box 12 \ 1  01-page111
Request to modify the 'SS' Axle Control Damper drawing to prevent trapped air after the deletion of an air vent.24th Nov 1928Box 12 \ 1  01-page112
Recommendation to modify bonnet strips to allow for adjustment of the shock absorbers on the axle control damper.28th Nov 1928Box 12 \ 1  01-page113
Lubrication issues and load capacity for the 'SS' axle control arm.30th Nov 1928Box 12 \ 1  01-page114
Modifications and potential issues with the front axle control damper levers.1st Dec 1928Box 12 \ 1  01-page115
Instructions for fitting up the '33' axle control arm.1st Dec 1928Box 12 \ 1  01-page116
Mistake in the 'SS' Front Axle operating lever position and proposed modifications.12th Dec 1928Box 12 \ 1  01-page117
Lever specifications and stress failure analysis for a front axle control damper.7th Dec 1928Box 12 \ 1  01-page118
Note on altering the low pressure loads of 'SS' front axle control dampers by adding a washer.10th Dec 1928Box 12 \ 1  01-page119
On replacing 'fishback' section short levers on 'SS' Front Axle Control Dampers.11th Dec 1928Box 12 \ 1  01-page120
The removal of restriction discs from the front axle control dampers of vehicle 18-EX.13th Dec 1928Box 12 \ 1  01-page121
Proposed improved lubrication for the 'SS' front axle control damper.29th Jan 1929Box 12 \ 1  01-page122
Updates and proposals for the 'SS' chassis, covering lubrication, steering, and other components.6th Feb 1929Box 12 \ 1  01-page123
Theory on chassis stiffness, periodicity, and testing methods for 20 HP & SS chassis.4th Mar 1929Box 12 \ 1  01-page124
Technical note on the flexibility, resilience, and bouncing characteristics of smaller road wheels.18th Mar 1929Box 12 \ 1  01-page125
Copy of a telegram from Mr. Royce regarding an axle examination after ten thousand miles.18th Mar 1929Box 12 \ 1  01-page126
Design and performance of hydraulic dampers, focusing on valve and passage design.25th Mar 1929Box 12 \ 1  01-page127
Issues and design principles for hydraulic shock dampers.4th Apr 1929Box 12 \ 1  01-page128
Road testing issues with a 20 HP car, focusing on ineffective dampers, flexible springs, and body instability.17th Apr 1929Box 12 \ 1  01-page129
Remedies for a fouling issue with the 'SS' Cross Steering Tube.17th Apr 1929Box 12 \ 1  01-page130
The condition of chassis 18-EX after 18,000 miles of use.24th May 1929Box 12 \ 1  01-page131
Inspection report detailing the lubrication and wear condition of various vehicle component bearings.24th May 1929Box 12 \ 1  01-page132
Inspection report detailing the condition of bearings for various supplied units.24th May 1929Box 12 \ 1  01-page133
The condition of bearings for various supplied rear axle and brake units.25th May 1929Box 12 \ 1  01-page134
Design and sourcing of special Enots nipples for axle lubrication.25th May 1929Box 12 \ 1  01-page135
Proposal for centralised chassis lubrication for 40/50 and 20 HP models.8th Jun 1929Box 12 \ 1  01-page136
The lubrication of cross steering tube ball ends, suggesting a definite location to prevent oil loss.16th Aug 1929Box 12 \ 1  01-page137
Front axle control for the 20 HP model, comparing it against the 40/50 HP and Phantom models.12th Nov 1929Box 12 \ 1  01-page138
Tests on the 20 HP front axle, its effect on steering joggles, and future concerns for the 40/50 HP car.21th Nov 1929Box 12 \ 1  01-page139
The challenges of lowering the 20 HP car by altering the frame's front joggle.21th Nov 1929Box 12 \ 1  01-page140
Difficulties with Bijur lubrication of axles and recommending a new procedure.1st Jan 1930Box 12 \ 1  01-page141
Discussion document on improving the axle lubrication system using air-vessels and a one-shot chassis system.1st Jan 1930Box 12 \ 1  01-page142
Instructions for lubricating axles with an oil gun, recommending a new page for existing instruction books.1st Jan 1930Box 12 \ 1  01-page143
Clearance issues for the Excelsior Damper on the Phantom II front axle.3rd Mar 1930Box 12 \ 1  01-page144
Recommendations for investigating Phantom II steering complaints, focusing on wheel balance, tyre pressures, and pivot lean.15th May 1930Box 12 \ 1  01-page145
Page detailing steering and suspension adjustments, including wheel toe-in, cross-steering tube poundage, and shock absorber issues.15th May 1930Box 12 \ 1  01-page146
Instructions on checking shock absorber oil levels, tyre selection for steering issues, and testing the cross-steering tube load.13th May 1930Box 12 \ 1  01-page147
Blueprint with handwritten notes on the specifications and adjustments for a cross-steering tube.13th May 1930Box 12 \ 1  01-page148
Standardisation of central oiling for front and rear chassis axles.2nd Jun 1930Box 12 \ 1  01-page149
Experiment to resolve a complaint about a failing metering tube for the Bijur oil supply on the front axle.12th Nov 1930Box 12 \ 1  01-page150
Method for increasing front braking by lengthening the central lever of the front brake equaliser shaft.14th Oct 1932Box 12 \ 1  01-page151
Requesting an investigation into converting a Silver Ghost front axle to a roller bearing pivot system to test on a 20-EX chassis.4th Nov 1932Box 12 \ 1  01-page152
Standardisation report for increasing the front axle braking percentage from 35% to 40%.3rd Oct 1932Box 12 \ 1  01-page153
Phantom II axle ratios, engine smoothness, and a proposal to test a new axle ratio on a trials car.18th Jun 1934Box 12 \ 1  01-page154
Modifications to axle control and springs for fitting a Phantom front axle to a Spectre model.14th Feb 1935Box 12 \ 1  01-page155
Stiffening of the upper roller bearing housings on the Phantom front axle pivot.25th Apr 1935Box 12 \ 1  01-page156
Drawings for a rear axle and proposing modifications to the braking system.15th Jan 1926Box 12 \ 2  02-page001
Modified rear axle tube (N.sch.2140) and an updated diagram of stresses.10th Feb 1926Box 12 \ 2  02-page002
Progress and delays concerning the testing of back axle controls for the Phantom model.27th Feb 1926Box 12 \ 2  02-page003
Clarifying the front and back axle tread dimensions for the New Phantom chassis.31th Mar 1925Box 12 \ 2  02-page004
Design alterations for a rear axle, specifically concerning scalloping flanges and bolt positions.31th Mar 1926Box 12 \ 2  02-page005
New rear hub for the E.A.C.VII semi-elliptic controlled axle, including a list of blueprints and a request to order parts.19th May 1926Box 12 \ 2  02-page006
Design of a rear axle casing with hypoid gears and requesting further dimensions.6th Oct 1926Box 12 \ 2  02-page007
Query and response regarding a potential increase in vehicle body width.23th Oct 1976Box 12 \ 2  02-page008
Standardisation of chassis parts for a rear axle with 1' wider track.23th Sep 1926Box 12 \ 2  02-page009
Standardisation sheet regarding the rear axle with a 1' wider track.23th Oct 1926Box 12 \ 2  02-page010
Modifications to the rear axle gearbox for lower ratio hypoid gears.28th Oct 1926Box 12 \ 2  02-page011
Fitting and testing of jacking pads on a Phantom rear axle.26th May 1927Box 12 \ 2  02-page012
Standardisation document for jack pads fitted to the near axle to improve jacking.25th May 1927Box 12 \ 2  02-page013
Introduction of a new standardised chassis part, including costs and testing details.1st Oct 1927Box 12 \ 2  02-page014
Design and ordering of hypoid rear axle gears with different offsets.25th Jun 1927Box 12 \ 2  02-page015
Reminder requesting comparative weights for EAC.7 and 40/50 back axles and their associated components.8th Oct 1927Box 12 \ 2  02-page016
Proposed modification to the rear axle centre casing, including experimental changes to bearings and the differential cage.12th Oct 1927Box 12 \ 2  02-page017
Axle weights, comparing an open propeller shaft with cantilever construction and detailing weight savings.27th Nov 1927Box 12 \ 2  02-page018
Weight comparison of axle components between the EAC.7 and 40/50 HP models, detailing alterations due to the Hotchkiss drive.27th Nov 1927Box 12 \ 2  02-page019
Table comparing weights of axle components to calculate weight savings between models EAC.7 and 40/50.27th Nov 1927Box 12 \ 2  02-page020
Comparison table of axle weights for EAC.7 and KAE 40/50 models.1st Nov 1927Box 12 \ 2  02-page021
Technical discussion regarding axle weights, component weights, and their impact on sprung vs. unsprung mass.1st Nov 1927Box 12 \ 2  02-page022
Axle weight calculations and comparing the weight of the EAC.7 transmission type against the standard 40/50 model.8th Nov 1927Box 12 \ 2  02-page023
Rear axle control weight reduction and spring performance for the 40/50 model.1st Jan 1928Box 12 \ 2  02-page024
Recommendations on axle ratios based on car weight, destination, and customer preferences.1st Jan 1928Box 12 \ 2  02-page025
Comparative table of weights for bevel wheels and pinions for various axle types.3rd Jan 1928Box 12 \ 2  02-page026
Outlining alternative suggestions for oil retaining devices on a 1' offset hypoid rear axle.28th Feb 1928Box 12 \ 2  02-page027
Proposal for centralised chassis lubrication for the rear axle.17th Mar 1928Box 12 \ 2  02-page028
Suggestion concerning central oiling for the front anchorage of the rear spring, referencing a previous suggestion for 'India 3'.14th Apr 1928Box 12 \ 2  02-page029
Modification to the endwise locating washer for the 'SS' Rear Axle to ease assembly.21th Apr 1928Box 12 \ 2  02-page030
Modifications to the centralised chassis lubrication and rear spring attachment for a Phantom 12-EX.10th May 1928Box 12 \ 2  02-page031
Wearing pad for the rear axle's central chassis lubrication system.11th May 1928Box 12 \ 2  02-page032
Simplified arrangement for the centralised chassis lubrication system on the rear axle.16th May 1928Box 12 \ 2  02-page033
Satisfactory performance of a Hypoid rear axle and issues with wing clearance for coachbuilders.7th Jun 1928Box 12 \ 2  02-page034
Slight modifications to the rear axle end to accommodate a rebuilt wire wheel.21th Sep 1928Box 12 \ 2  02-page035
Confirming the selection of axle N.sch.2718 over N.sch.2625.24th Sep 1928Box 12 \ 2  02-page036
Introduction of the 14 tooth axle as a standard part, seeking a timeline for the change.27th Sep 1928Box 12 \ 2  02-page037
Providing instructions and a diagram for fitting wooden plugs into brake shafts.16th Nov 1928Box 12 \ 2  02-page038
The requirement for air vessels on the rear axle for the centralised lubrication system.20th Nov 1928Box 12 \ 2  02-page039
Modifications to the 'SS' rear axle damper to improve accessibility for adjustments.21th Nov 1928Box 12 \ 2  02-page040
Positioning and suggested modifications for the 'SS' Rear Axle Damper.22th Nov 1928Box 12 \ 2  02-page041
Scheme for the 'SS' rear axle and damper to enable cap removal without removing the damper from the frame.24th Nov 1928Box 12 \ 2  02-page042
Modifications to the 'SS' rear axle damper valve plugs.30th Nov 1928Box 12 \ 2  02-page043
Investigation of noisy 'SS' rear axles and a proposed modification to the axle rig for easier adjustment.1st Dec 1928Box 12 \ 2  02-page044
Urgent completion of 'SS' and '20-EX' chassis, proposing the use of standard bevels to avoid delays waiting for American Hypoid Gears.4th Jan 1929Box 12 \ 2  02-page045
Telegram regarding travel to London and the availability of cars.10th Jan 1932Box 12 \ 2  02-page046
Modifications to rear axle oil drain holes to prevent them from choking with mud.7th Feb 1929Box 12 \ 2  02-page047


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