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
Steering issues, specifically low speed wobbles and stiff steering on the Phantom chassis.17th May 1926West Wittering \ O \ 2April1926-June1926  Scan139
Tests on Phantom steering complaints in France, comparing standard and weaker springs, and adding hydraulic shock dampers.17th May 1926West Wittering \ O \ 2April1926-June1926  Scan140
The preparation of a 40/50 HP Phantom Chassis and a 12-EX car.19th May 1926West Wittering \ O \ 2April1926-June1926  Scan141
The performance of Lancia Lambda hydraulic dampers.20th May 1926West Wittering \ O \ 2April1926-June1926  Scan142
The testing methodology for a plunger and cylinder assembly, including a diagram of the testing apparatus.20th May 1926West Wittering \ O \ 2April1926-June1926  Scan143
Sequence of events and forces involved when a road wheel suspension encounters a bump.20th May 1926West Wittering \ O \ 2April1926-June1926  Scan144
Analysis of spring and piston resistance in a hydraulic system during return and rebound.20th May 1926West Wittering \ O \ 2April1926-June1926  Scan145
Analysis of a damper's performance, detailing the resistance during its upward return stroke and rebound.20th May 1926West Wittering \ O \ 2April1926-June1926  Scan146
Continuation of a report on spring behaviour, noting the influence of oil temperature and viscosity on results.20th May 1926West Wittering \ O \ 2April1926-June1926  Scan147
Graph plotting resistance to motion against velocity for Lancia-Lambda dampers using Ologene 'D' oil.17th May 1926West Wittering \ O \ 2April1926-June1926  Scan148
Improvements to the distribution board cutout contact point, including results from a 14,000-mile road test.22th May 1926West Wittering \ O \ 2April1926-June1926  Scan149
The mileage and condition of experimental chassis fitted with distribution boards and cut-out contacts.22th May 1926West Wittering \ O \ 2April1926-June1926  Scan150
Sketch of a cutout showing a rigid contact support and a narrower contact spring, with developed views of the spring and support.20th May 1926West Wittering \ O \ 2April1926-June1926  Scan151
Test report detailing an attempt to destroy hydraulic shock dampers by driving a car at high speed over a hump-backed bridge.26th May 1926West Wittering \ O \ 2April1926-June1926  Scan152
Testing of shock absorbers, dampers, and oil viscosity for vehicle suspension.26th May 1926West Wittering \ O \ 2April1926-June1926  Scan153
Damper and oil performance tests, comparing different oils and analysing road comfort.26th May 1926West Wittering \ O \ 2April1926-June1926  Scan154
Report page detailing tests on a rear shock damper arrangement, focusing on free movement and damping.26th May 1926West Wittering \ O \ 2April1926-June1926  Scan155
Viscosity comparison graph for 'Prices Motorine C' and 'Lovejoy' oils.20th May 1926West Wittering \ O \ 2April1926-June1926  Scan156
Front spring rating tests to investigate and improve suspension complaints.27th May 1926West Wittering \ O \ 2April1926-June1926  Scan157
Methodology for testing vehicle springs, comparing oscillation versus gradual loading.27th May 1926West Wittering \ O \ 2April1926-June1926  Scan158
Analysis of the effects of axle pad width and shackle inclination on spring performance, referencing several graphs.27th May 1926West Wittering \ O \ 2April1926-June1926  Scan159
The variations of pads and shackles, and the testing of Woodhead leaf springs.27th May 1926West Wittering \ O \ 2April1926-June1926  Scan160
Summary of front spring rating tests with data tables and graph references.27th May 1926West Wittering \ O \ 2April1926-June1926  Scan161
The effects of shackle movement deflection and a comparison of different springs.27th May 1926West Wittering \ O \ 2April1926-June1926  Scan162
Two graphs showing spring rating tests, one for the effect of shackle angle and the other for the effect of pad width.27th May 1926West Wittering \ O \ 2April1926-June1926  Scan164
Two graphs illustrating spring rating tests, one for the effect of pad width and another comparing different spring systems.27th May 1926West Wittering \ O \ 2April1926-June1926  Scan165
Graph showing results from spring rating tests focusing on the effect of internal friction.27th May 1926West Wittering \ O \ 2April1926-June1926  Scan166
Two graphs showing the results of spring rating tests, analysing internal friction and the agreement of independent tests.27th May 1926West Wittering \ O \ 2April1926-June1926  Scan167
Graph plotting spring rating against total spring load to show the effect of internal friction under gradual and bump loading.27th May 1926West Wittering \ O \ 2April1926-June1926  Scan168
Graph showing results from spring rating tests, specifically the effect of deflection due to shackle movement.27th May 1926West Wittering \ O \ 2April1926-June1926  Scan169
Hand-drawn graph showing the variation of shackle angle against compression for a narrow pad.27th May 1926West Wittering \ O \ 2April1926-June1926  Scan170
Graph showing spring rating tests, plotting spring rating against total load to show the effect of deflection due to shackle movement.27th May 1926West Wittering \ O \ 2April1926-June1926  Scan171
Armature losses tests for the N.B. (Narrower Brush) type dynamo.27th May 1926West Wittering \ O \ 2April1926-June1926  Scan173
Continued breakdown and tabulation of various electrical and mechanical losses in watts for two machine types.27th May 1926West Wittering \ O \ 2April1926-June1926  Scan174
Preliminary report comparing observed losses and performance between two machines, with plans for a 10,000-mile test on chassis 12-EX.27th May 1926West Wittering \ O \ 2April1926-June1926  Scan175
10,000-mile test of an H.T. distributor fitted with stainless steel components.27th May 1926West Wittering \ O \ 2April1926-June1926  Scan176
Experiments with Phantom batteries, focusing on variations in grids and threaded rubber separators.28th May 1926West Wittering \ O \ 2April1926-June1926  Scan177
New lightened axle, clutch problems, and testing modifications for the 12-EX car.29th May 1926West Wittering \ O \ 2April1926-June1926  Scan178
The failure of the built-up crankshaft on the new Vauxhall sleeve engine.7th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan179
Proposal to test the Lucas type ER6 magneto, comparing its modern design and production methods against the standard Watford magneto.7th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan180
The performance of Watford and Lucas magnetos, noting issues and potential improvements.7th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan181
Continued discussion on the advantages of using Lucas magnetos and proposed testing on an experimental chassis.7th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan182
Continuation page concerning two magnetos submitted by Messrs. Lucas.8th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan183
Experimental proposition to double the value of the ballast resistance for ignition coils.8th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan184
Modifications to the ballast resistance and coil winding to increase the life of platinum contact points.8th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan185
Ongoing testing and comparison of Maconites insulated H.T. cables against standard cables on various chassis.8th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan186
High voltage tests comparing the merits of Maconite and Glover ignition cables.7th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan187
Comparing the inertia and weight of flywheel and clutch units for the Phantom and Silver Ghost models.10th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan188
Progress report on alterations made to the Sequence Silent Starter system.19th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan189
Arrangement and testing of a modified combined switch unit for chassis 9-EX.15th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan190
The stress testing progress of a new lightened axle for the Phantom model.15th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan191
From Hs. to E. regarding modifications for a 20 HP chassis undergoing a 10,000-mile test.6th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan192
Results and methodology of tests on hydraulic shock dampers.16th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan193
Page discussing the principles of oil flow resistance through orifices in relation to hydraulic shock dampers.1st Jun 1926West Wittering \ O \ 2April1926-June1926  Scan194
Dynamo-battery combination of a chassis electrical system and proposing further experimental work.16th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan197
Developing an automatic voltage-operated cutout, with reference to the Midgley lighting system and dynamo types.16th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan198
Ignition ballast resistance and battery charging electromotive forces (E.M.F.'s).16th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan199
Battery internal resistance, charging questions, and potential differences at various rates.16th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan200
Explanation of the functioning of dynamo-battery combinations in chassis electrical systems.2nd Jun 1926West Wittering \ O \ 2April1926-June1926  Scan201
Page discussing the operation of a controlled dynamo and potential faults in the battery charging circuit.2nd Jun 1926West Wittering \ O \ 2April1926-June1926  Scan202
The effects of poor connections and resistance in the dynamo-battery electrical circuit.12th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan203
The defects and fundamental design flaws of dynamo-battery systems.2nd Jun 1926West Wittering \ O \ 2April1926-June1926  Scan204
Completely externally regulated dynamo systems and their role in the ideal chassis electrical system.26th Jun 1925West Wittering \ O \ 2April1926-June1926  Scan205
The function of an external regulator for a dynamo and battery system.2nd Jun 1926West Wittering \ O \ 2April1926-June1926  Scan206
The regulation of field current in a system using vibrating contacts to insert resistance into the field circuit.2nd Jun 1926West Wittering \ O \ 2April1926-June1926  Scan207
The difficulties and compromises of designing reliable automatic field current regulation systems for battery charging.12th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan208
Compromises for dynamo systems, focusing on using field resistance to regulate output.12th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan209
Description of an electro-magnetically operated relay switch for a dynamo-battery system.12th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan210
Page describing the operation of an automatic dynamo charging system and relay unit.12th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan211
Continued description of the function of an automatic and electro-magnetic switch within a vehicle's charging system.2nd Jun 1926West Wittering \ O \ 2April1926-June1926  Scan212
The condition of 10-CIII Barker's all-weather bodywork after a 10,000-mile test in France.16th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan213
Tests on self-ignition in Phantom engines after switching off.8th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan214
Engine self-ignition tests, focusing on the relationship between valve temperature, engine speed, and charge ignition.8th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan215
Tests for self-ignition temperatures of different fuels like petrol, benzol, and Discoll.8th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan216
Fuel self-ignition tests, comparing Shell Mex spirit and Benzol, and the effects of water and air temperature.8th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan217
Analysis of engine self-ignition, comparing fuel types and the Phantom and Silver Ghost engines.8th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan218
Page discussing an investigation into the differences between the Phantom and Silver Ghost models.8th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan219
The 50-hour bumping test results for a lightened type front axle for the Phantom.8th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan220
10,000-mile test in France for a 12-EX EAC-V111 chassis, detailing new parts and axle instructions.21th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan221
List of experimental parts fitted to the 12-EX - EAC-V111 chassis.19th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan222
Continued list of numbered modifications and specifications for various vehicle components.19th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan223
List of numbered modifications relating to the battery, thermaster, junction box, and brake equaliser.21th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan224
Armature losses in three types of narrower brush EAC dynamos.21th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan225
Calculation for the separation of hysteresis and eddy current losses in different machines.26th May 1936West Wittering \ O \ 2April1926-June1926  Scan226
Graphical representation of E.A.C. Dynamo Armature losses as measured by observation of differential input to the driving motor.22th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan228
Dynamometer test report on a Lancia Lambda, detailing power output at the road wheels and comparing it to a 20 HP model.22th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan230
Performance comparison between a 20 HP model and a Lancia, focusing on tractive effort, engine capacity, and weight ratios.15th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan231
Performance graph showing Horsepower at the road wheels for a Lancia-Lambda.15th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan232
Delay in preparing a Phantom car with semi-elliptic rear springs due to issues fitting hydraulic dampers.22th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan234
Investigating the properties and use of ballast resistance, particularly concerning nickel wire for ignition and dynamo applications.24th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan235
The use of ballast resistance wire in relation to dynamo speeds and ignition coil primary windings.24th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan236
Midgley cutout and controller, referencing an attached report AC.74.24th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan238
Description of the Midgley cutout and controller apparatus for investigating its dynamo control scheme.21th May 1926West Wittering \ O \ 2April1926-June1926  Scan239
Continued test report on a controller armature and cutout, detailing its action and electrical test results.21th May 1926West Wittering \ O \ 2April1926-June1926  Scan240
Test results and electrical specifications for a controller, including shunt and series measurements.21th May 1926West Wittering \ O \ 2April1926-June1926  Scan241
Dynamo output testing with varying field circuit resistances and battery charge levels.28th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan242
The results of P.D. and E.M.F. tests on six different chassis batteries, including a description of the testing methodology.28th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan244
Comparison of P & R and Exide batteries and an analysis of generator output characteristics.26th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan245
Battery charging principles, comparing tapering charges with full rate charges and the effects on voltage and E.M.F.26th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan246
Battery charging test methods, proposing an experiment with external resistance.26th Jun 1926West Wittering \ O \ 2April1926-June1926  Scan247


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