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
Proposal for a suggested body stiffener for a 20 HP vehicle.29th Sep 1923West Wittering \ K \ September1923  Scan126
Frame deflection and body mounting for the Goshawk 11 chassis, comparing tiebar systems and proposing a new body runner stiffener.1st Sep 1923West Wittering \ K \ September1923  Scan127
Experimental modifications to a car's body and scuttle insulation.30th Sep 1923West Wittering \ K \ September1923  Scan128
Drawing for an improved Goshawk 11 clutch operating gear.30th Sep 1923West Wittering \ K \ September1923  Scan129
Experiments on new Redmanol encased coils compared to the standard stabalite coils.3rd Jun 1924West Wittering \ L \ 2April1924-June1924  Scan0
Continued memorandum regarding the replacement of a mouldensite encased coil.3rd Jun 1924West Wittering \ L \ 2April1924-June1924  Scan1
Testing the efficiency of a servo with various cams.1st Jun 1924West Wittering \ L \ 2April1924-June1924  Scan2
Servo torque multiplication measured on a car.1st Jun 1924West Wittering \ L \ 2April1924-June1924  Scan3
Servo torque multiplication with Ferodo linings, including formulae and a results table.20th Mar 1924West Wittering \ L \ 2April1924-June1924  Scan4
Bodywork failures on a 10,000-mile test car, 98-NK, and communication with coachbuilders Messrs Barkers for a refit.4th Jun 1924West Wittering \ L \ 2April1924-June1924  Scan5
Design changes and progress for a Speed Model chassis and components.14th Jun 1924West Wittering \ L \ 2April1924-June1924  Scan6
Progress report on alterations and status of the engine, clutch, steering, servo, and gear systems.15th May 1924West Wittering \ L \ 2April1924-June1924  Scan7
Technical note detailing an ignition test, switchbox configuration, and magneto type.14th May 1924West Wittering \ L \ 2April1924-June1924  Scan8
Secret memorandum from 'R' to 'E.A.C.' discussing the cancellation of a previous throttle governor and the design of a new one.14th Jun 1924West Wittering \ L \ 2April1924-June1924  Scan9
Diagram of a governor mechanism with hand and foot controls.1st Mar 1914West Wittering \ L \ 2April1924-June1924  Scan10
Bodywork failures by coachbuilder Messrs. Barkers on the 10,000 miles test car, 98-NK.5th Jun 1924West Wittering \ L \ 2April1924-June1924  Scan11
The provision of new wings for a Barker Torpedo, Chassis 98.NK.6th Jun 1924West Wittering \ L \ 2April1924-June1924  Scan12
Tests conducted with a torsional friction damper.11th Jun 1924West Wittering \ L \ 2April1924-June1924  Scan13
Further tests with torque control, specifically the torsional movement and vibration of the axle when jaggering.11th Jun 1924West Wittering \ L \ 2April1924-June1924  Scan14
Diagram showing the position of the centre of twist of a front spring when under braking torque.11th Jun 1924West Wittering \ L \ 2April1924-June1924  Scan15
Recommendation to examine a Mercedes car before purchase for instructional purposes.1st Jun 1924West Wittering \ L \ 2April1924-June1924  Scan16
Potential purchase of a Mercedes car with a gear-driven supercharger for instructional purposes.5th Jun 1924West Wittering \ L \ 2April1924-June1924  Scan17
Comparing the performance of a 20 HP Sunbeam car against a 20 HP model.12th Jun 1924West Wittering \ L \ 2April1924-June1924  Scan18
The failure of the 40/50 HP spare wheel carrier, with a proposal for a more secure three-point mounting.18th Jun 1924West Wittering \ L \ 2April1924-June1924  Scan20
The condition of a Hispano Car pivot and instructions for its disassembly.28th Jun 1924West Wittering \ L \ 2April1924-June1924  Scan21
Dispatch of an ignition coil in a moulded redmanol case for comparative testing.18th Jun 1924West Wittering \ L \ 2April1924-June1924  Scan22
Fitment and evaluation of a shorter change speed lever for a 40/50 HP model.25th Jun 1924West Wittering \ L \ 2April1924-June1924  Scan23
Secret memo regarding an overlooked oil catcher scheme for front hubs on four-wheel brakes.25th Jun 1924West Wittering \ L \ 2April1924-June1924  Scan24
Engine throttle movement and its effect on horsepower.26th Jun 1924West Wittering \ L \ 2April1924-June1924  Scan25
Improving the Bijur starter pinion, detailing tests and failures of the cork clutch material.27th Jun 1924West Wittering \ L \ 2April1924-June1924  Scan26
Modified starter drive, addressing a fault and outlining its advantages over the current design.27th Jun 1924West Wittering \ L \ 2April1924-June1924  Scan27
Test report on an Eagle XV engine with 2-speed gear, noting sluggish gear changes with Shell Super Light Oil.30th Jun 1924West Wittering \ L \ 2April1924-June1924  Scan28
Report comparing Shell Super Light Oil and Castrol for use in Eagle XV engines, including a lab report on viscosities and flash points.13th Jun 1924West Wittering \ L \ 2April1924-June1924  Scan29
Performance of car 6.EX after a test drive and outlining necessary modifications.25th Jun 1924West Wittering \ L \ 2April1924-June1924  Scan30
Comparison of engine cooling performance between a three-bladed fan and a standard fan on vehicle 98-NK.29th Jun 1924West Wittering \ L \ 2April1924-June1924  Scan31
Test report comparing the efficiency of a three-bladed fan versus a standard fan on a 35-PK model.29th Jun 1924West Wittering \ L \ 2April1924-June1924  Scan32
From R. to HS. discussing the ideal braking force distribution for 4 wheel brakes.30th Jun 1924West Wittering \ L \ 2April1924-June1924  Scan33
Brake jaggers, detailing tests on Hispano, Isotta, and Delage cars.1st May 1924West Wittering \ L \ 2April1924-June1924  Scan34
Brake tests investigating 'brake jaggers' by modifying Ferodo linings on brake shoes.1st May 1925West Wittering \ L \ 2April1924-June1924  Scan35
Brake shoe testing to prevent 'jaggers' by modifying the Ferodo lining.5th Aug 1924West Wittering \ L \ 2April1924-June1924  Scan36
List of unsuccessful experiments conducted to eliminate front wheel brake jagger on model L.W.111.5th Aug 1924West Wittering \ L \ 2April1924-June1924  Scan37
List of experiments on brakes and brake carriers, along with different methods of brake operation.5th Aug 1924West Wittering \ L \ 2April1924-June1924  Scan38
Comparison note on two different front wheel brake schemes, the 'Hispano' and the 'Agreed' scheme.20th Mar 1924West Wittering \ L \ 2April1924-June1924  Scan39
The testing of Scintilla Magneto types AC-6-A and AG-6-A, focusing on their automatic advance feature.9th May 1924West Wittering \ L \ 2April1924-June1924  Scan40
The testing and comparison of different Scintilla magneto models for the 20 HP chassis.19th May 1924West Wittering \ L \ 2April1924-June1924  Scan41
Testing a magneto with automatic advance, including details on rotation, RPM ranges, and advance curves compared to a 20 HP chassis.31th Mar 1924West Wittering \ L \ 2April1924-June1924  Scan42
Experimental routine test results comparing Scintilla AM-6-A and Watford E.O.6 magnetos.17th May 1934West Wittering \ L \ 2April1924-June1924  Scan43
Comparison of dimensions for Scintilla and Watford magnetos with a supporting sketch and table of data.9th May 1934West Wittering \ L \ 2April1924-June1924  Scan44
Magneto platinum point gaps and contact breaker timing specifications.9th May 1924West Wittering \ L \ 2April1924-June1924  Scan45
Magneto endurance and performance tests, including open and short circuit curves.9th May 1924West Wittering \ L \ 2April1924-June1924  Scan46
Safety gap, short duration, and utility leakage tests on various magnetos.19th May 1924West Wittering \ L \ 2April1924-June1924  Scan47
High and low speed sparking characteristics for various magnetos.9th May 1924West Wittering \ L \ 2April1924-June1924  Scan48
Page detailing primary and secondary resistance and current measurements for various magnetos.9th May 1924West Wittering \ L \ 2April1924-June1924  Scan49
Performance data for three different Scintilla AG-6-A magnetos with automatic advance.19th Jan 1923West Wittering \ L \ 2April1924-June1924  Scan50
Secret memo regarding a 1000-mile test car, focusing on body construction weaknesses and a proposed solution for wing trouble.24th May 1924West Wittering \ L \ 2April1924-June1924  Scan51
Preliminary report on the Scintilla Magneto Type AM6-A.28th May 1923West Wittering \ L \ 2April1924-June1924  Scan52
Investigation into the sources of noise on a Scintilla AM-8-A magneto at various speeds.6th Mar 1934West Wittering \ L \ 2April1924-June1924  Scan53
Graph detailing the automatic advance cam performance with speed for Scintilla Magnetos types AG6A and AM6A.6th Apr 1924West Wittering \ L \ 2April1924-June1924  Scan54
Graph of open-circuit volt-speed and short-circuit ampere-speed curves for the primary windings of Scintilla and Watford magnetos.6th Apr 1924West Wittering \ L \ 2April1924-June1924  Scan55
The advantages and disadvantages of water-heated versus exhaust-heated carburetter systems.1st May 1925West Wittering \ L \ 2April1924-June1924  Scan56
Facts about exhaust heated throttles, choke valves, and power reduction.25th Sep 1924West Wittering \ L \ 2April1924-June1924  Scan57
Potential solutions to engine overheating, including thermostat removal and radiator design changes.5th May 1925West Wittering \ L \ 2April1924-June1924  Scan59
The causes and factors contributing to engine overheating, with reference to the 40/50 'Silver Ghost' model.4th May 1925West Wittering \ L \ 2April1924-June1924  Scan62
Comparing engine overheating and cooling efficiency with a Hispano Suiza engine.14th May 1925West Wittering \ L \ 2April1924-June1924  Scan63
Comparing the radiator and fan cooling systems of the Silver Ghost and Hispano models.14th May 1925West Wittering \ L \ 2April1924-June1924  Scan64
Comparing overheating issues and cooling system performance between the 'Silver Ghost' and the 'Hispano Suiza'.4th May 1925West Wittering \ L \ 2April1924-June1924  Scan65
The cooling system limitations and overheating issues of the Silver Ghost model.1st May 1925West Wittering \ L \ 2April1924-June1924  Scan66
Comparing the turning circles of the EAC.111 axle against the standard long chassis.2nd May 1934West Wittering \ L \ 2April1924-June1924  Scan69
Routine test results for two Watford R.O.1 magnetos which passed production testing.15th May 1924West Wittering \ L \ 2April1924-June1924  Scan70
Comparison of performance results for Watford HC6 and Scintilla magnetos, including spark gaps, speeds, and resistances.15th May 1924West Wittering \ L \ 2April1924-June1924  Scan71
Comparison of maximum and minimum magneto readings for two machines at 108 volts A.C.15th May 1924West Wittering \ L \ 2April1924-June1924  Scan72
The testing and performance of a Nickel-Iron (Ni-Fe) battery.15th May 1924West Wittering \ L \ 2April1924-June1924  Scan73
Performance comparisons and specifications of various automotive batteries, including Ni-Fe and Alklum types.15th May 1924West Wittering \ L \ 2April1924-June1924  Scan74
High and low rate discharge tests performed on an Alklum 50 ampere-hour battery.15th May 1924West Wittering \ L \ 2April1924-June1924  Scan75
Comparison of test results for NI-FE and ALKLUM alkaline batteries.15th May 1924West Wittering \ L \ 2April1924-June1924  Scan76
Comparison of various batteries, analyzing their performance characteristics and discharge curves.15th May 1924West Wittering \ L \ 2April1924-June1924  Scan77
Issues with battery/cell evaporation, venting, and external corrosion.15th May 1924West Wittering \ L \ 2April1924-June1924  Scan78
Test results on three separate chart recordings.15th May 1924West Wittering \ L \ 2April1924-June1924  Scan79
Graph showing continuous high-rate discharge curves for various 40-50HP chassis batteries.14th May 1924West Wittering \ L \ 2April1924-June1924  Scan80
Steering affects caused by the torsional movement of the axle under uneven four-wheel braking.12th Jul 1923West Wittering \ L \ 2April1924-June1924  Scan81
The effects of braking on the vehicle's pivot lean and steering stability.12th Jul 1923West Wittering \ L \ 2April1924-June1924  Scan82
Steering issues caused by braking and the effect of a torque arm.5th May 1924West Wittering \ L \ 2April1924-June1924  Scan83
Secret memo discussing design considerations for four-wheel brake systems.16th Apr 1924West Wittering \ L \ 2April1924-June1924  Scan84
Testing an E.A.C. gravity clutch plate and a proposed modification.20th May 1924West Wittering \ L \ 2April1924-June1924  Scan85
Performance report on experimental E.A.C. dynamo outputs, designated /03, 05, and 07.1st May 1924West Wittering \ L \ 2April1924-June1924  Scan86
Performance test results for a controlled machine under various temperature conditions, including chassis speed equivalents.21th May 1924West Wittering \ L \ 2April1924-June1924  Scan87
Graph of ampere output curves for an EAC dynamo under various conditions.11th Mar 1924West Wittering \ L \ 2April1924-June1924  Scan88
The performance of a Scintilla magneto for the E.A.C.2 engine.26th May 1924West Wittering \ L \ 2April1924-June1924  Scan89
Comparison of magneto performance, focusing on Scintilla and Watford models for 40/50 cars.26th May 1924West Wittering \ L \ 2April1924-June1924  Scan90
Methodology and results of chassis frame deflection tests.27th May 1924West Wittering \ L \ 2April1924-June1924  Scan91
Testing sunwheel bush clearance and the effects of different oils.29th May 1924West Wittering \ L \ 2April1924-June1924  Scan92
Testing a fixed choke type carburetter with a vaporiser.29th May 1924West Wittering \ L \ 2April1924-June1924  Scan93
Vibrations, noise and wear in the adopted servo brake gears.20th Mar 1924West Wittering \ L \ 2April1924-June1924  Scan94
Horsepower figures from tests on a 40/50 HP engine with different exhaust pipe schemes.1st Apr 1924West Wittering \ L \ 2April1924-June1924  Scan95
Comparison of power losses for two exhaust system schemes relative to the standard 40/50 HP system.1st Apr 1924West Wittering \ L \ 2April1924-June1924  Scan96
Bump test report on a new scheme for front springs and rear anchorage, detailing breakages over time.1st Apr 1924West Wittering \ L \ 2April1924-June1924  Scan97
Tabulated log detailing component breakages and remarks against running time and piece number.1st Apr 1924West Wittering \ L \ 2April1924-June1924  Scan98
Log sheet detailing vehicle component breakages and failures with corresponding running times.1st Apr 1924West Wittering \ L \ 2April1924-June1924  Scan99
Log detailing component breakages and remarks recorded during running time tests.1st Mar 1914West Wittering \ L \ 2April1924-June1924  Scan100
Bump test comparison report on new type Firth road springs and clips versus the standard pattern.1st Apr 1924West Wittering \ L \ 2April1924-June1924  Scan101
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