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
Print of an experimental Phantom III air intake silencer.16th Jan 1936Box 93 \ 2  scan0129
Poor performance during road tests of the Phantom III Induction System with a Stromberg Carburettor.24th Jan 1936Box 93 \ 2  scan0130
Modifications to the Phantom III induction system to improve power output.24th Jan 1936Box 93 \ 2  scan0131
Performance graph comparing different induction systems on a Phantom III No. 9 unit with whitemetal bearings and full split pistons.22th Jan 1936Box 93 \ 2  scan0132
The testing and design of a Phantom III air silencer.7th Feb 1936Box 93 \ 2  scan0133
Modifications to the Phantom III's Duplex Stromberg downdraught induction system to improve power output.11th Feb 1936Box 93 \ 2  scan0134
Outstanding tests for the petrol drain and overflow vent pipe systems.11th Feb 1936Box 93 \ 2  scan0135
Test results for the Phantom III induction drain scheme under various petrol flow conditions.20th Feb 1936Box 93 \ 2  scan0136
Test report on carburettor modifications to cope with fuel flooding under various conditions.20th Feb 1936Box 93 \ 2  scan0137
Inefficiency of the Phantom III Air Silencer and its replacement.20th Feb 1936Box 93 \ 2  scan0138
List of modifications and points to be addressed for the Phantom III Carburetter.20th Feb 1936Box 93 \ 2  scan0139
Specification sheet detailing adjustments to pipe threads and control rod connections.20th Feb 1936Box 93 \ 2  scan0140
Modifications to the Phantom III Induction System's float chamber drain pipe.22th Feb 1936Box 93 \ 2  scan0141
Preliminary test results and fault analysis for a Phantom III Stromberg carburetter.24th Feb 1936Box 93 \ 2  scan0142
Modifications to the throttle and choke return springs to resolve operational issues.24th Feb 1936Box 93 \ 2  scan0143
Requesting the modification of two downdraught carburettors for Phantom III units.25th Feb 1936Box 93 \ 2  scan0144
Modifications to the Phantom III Air Silencer for production.25th Feb 1936Box 93 \ 2  scan0145
Requesting carburetter drawings to modify a Stromberg carburetter for a 10,000-mile test.27th Feb 1936Box 93 \ 2  scan0146
Modifications to the Phantom III carburetter.27th Feb 1936Box 93 \ 2  scan0147
Request to manufacture and fit a Ph.III Air Silencer to a 32-EX car, and to test an alternative 'Pot Scrubber' filter element.2nd Mar 1936Box 93 \ 2  scan0148
Modification to the Phantom III carburetter controls bracket.6th Mar 1936Box 93 \ 2  scan0149
Modifying the Phantom III Carburetter union body by increasing its bore size for improved petrol flow.9th Mar 1936Box 93 \ 2  scan0150
Developing a cheaper alternative to the Vokes air filter for carburetter air silencers.10th Mar 1936Box 93 \ 2  scan0151
Requesting the creation of 3 'Pot Scrubber' type air silencers for the Phantom III.12th Mar 1936Box 93 \ 2  scan0152
Order for various sized carburetter air filters for different engine models.19th Mar 1936Box 93 \ 2  scan0153
Results of tests to resolve petrol starvation on the Phantom III model at high speeds.6th Apr 1936Box 93 \ 2  scan0154
Tests at Brooklands on a Phantom III with a Stromberg carburetter to address a petrol starving issue.6th Apr 1936Box 93 \ 2  scan0155
Vehicle performance tests, detailing speeds, carburettor settings, and fuel/oil consumption.6th Apr 1936Box 93 \ 2  scan0156
Car's weight and performance issues with the top gear, engine, clutch, and crankcase breather.6th Apr 1936Box 93 \ 2  scan0157
Cover memo for a report on tests to resolve petrol starvation issues on the Phantom III model at high speeds.6th Apr 1936Box 93 \ 2  scan0158
Test report on resolving petrol starvation issues for the 36-EX Phantom III car at Brooklands.6th Apr 1936Box 93 \ 2  scan0159
Test results report detailing carburetter performance, lap speeds, and fuel/oil consumption.6th Apr 1936Box 93 \ 2  scan0160
Car weight and performance issues including top gear, engine period, clutch, and crankcase breather faults.6th Apr 1936Box 93 \ 2  scan0161
Petrol supply issues with American-bodied Stromberg Ph.III carburettors.9th Apr 1936Box 93 \ 2  scan0162
Modifications to the Phantom III Stromberg Carburetter to prevent starvation at high speeds.9th Apr 1936Box 93 \ 2  scan0163
Modifications to the Phantom III carburettor and petrol supply to overcome hot starting issues.9th Apr 1936Box 93 \ 2  scan0164
Instruction to make Ph.III Float Chamber lamp-post type Vents to drawing LeC.5137 for use on experimental car models.27th May 1936Box 93 \ 2  scan0165
Carburation tests for the 36-EX model, detailing modifications and performance results.3rd Jun 1936Box 93 \ 2  scan0166
Request to manufacture gland springs for the Phantom III carburetter to a specific design.5th Jun 1936Box 93 \ 2  scan0167
Request for a report on the cast breather for the Phantom III.10th Jun 1936Box 93 \ 2  scan0168
Confirming the passing of the cast breather for the Phantom III.12th Jun 1936Box 93 \ 2  scan0169
Investigation into petrol spray from the Phantom III float chamber vent pipe under braking and full bore flooding conditions.23th Jun 1936Box 93 \ 2  scan0170
Float chamber vent position tests and an attached sketch of a new vent pipe.23th Jun 1936Box 93 \ 2  scan0171
Recurring failures with the leather plunger on the accelerator pump of the Phantom III carburetter.21th Aug 1936Box 93 \ 2  scan0172
Modification to the Phantom III Air Silencer end plate fixing.22th Aug 1936Box 93 \ 2  scan0173
Testing of a lightened accelerator pump gland spring for the Phantom III carburetter.13th Oct 1936Box 93 \ 2  scan0174
The modification to remove screwdriver slots from the Phantom III carburetter's float chamber lid set screws.31th Oct 1936Box 93 \ 2  scan0175
Carburation issues, specifically loading up at low speeds and fuel level problems in the floatchamber.1st Dec 1936Box 93 \ 2  scan0176
Further carburation tests for the Phantom III model, focusing on fuel levels, pumps, and float mechanisms.14th Dec 1936Box 93 \ 2  scan0177
Petrol consumption tests for the 37-EX model with various carburettor settings.5th Jan 1937Box 93 \ 2  scan0178
Removing the outside spark plug on the Phantom engine and improving plug accessibility on the 4-port head.12th Jan 1937Box 93 \ 2  scan0179
Request to modify a Phantom III carburetter.3rd Mar 1937Box 93 \ 2  scan0180
Request to HPS to make six sets of parts for a stronger throttle spring (P.III).9th Mar 1937Box 93 \ 2  scan0181
Modifications to the Phantom III Induction System for improved breathing.13th Mar 1937Box 93 \ 2  scan0182
Request to manufacture 5 sets of parts for the conversion of Phantom III carburettors.18th Mar 1937Box 93 \ 2  scan0183
Sticking throttles on Phantom III carburetters and a plan for investigation.22th Mar 1937Box 93 \ 2  scan0184
Troubleshooting difficult starting issues on a Phantom III when hot.16th Apr 1937Box 93 \ 2  scan0185
Page 2 of a report detailing engine faults discovered during testing, with a summary of issues and suggested remedies.17th Apr 1937Box 93 \ 2  scan0186
Instruction to fit stronger throttle springs (LeC.5335) to specific Phantom III cars.17th Apr 1937Box 93 \ 2  scan0187
Modifications to the Phantom III Induction System for improved breathing.20th Apr 1937Box 93 \ 2  scan0188
Standardisation specification for the Stromberg carburettor EEC42, detailing new parts and alterations.20th Apr 1937Box 93 \ 2  scan0189
Note on a stop pillar modification and the standardisation of a stronger throttle spring with part number changes.15th May 1937Box 93 \ 2  scan0190
Investigation into the cause and cure for engine flooding on the Phantom III model.15th May 1937Box 93 \ 2  scan0191
Investigation into filter plug failures and material recommendations for Stromberg carburetters on various chassis.15th May 1937Box 93 \ 2  scan0192
Future arrangements for cleaning parts with a reamer and a preference for copper asbestos joint washers over aluminium.19th May 1937Box 93 \ 2  scan0193
Investigation into carburetter flooding on the Phantom III model, identifying the cause as aluminium filter bodies and mandating a switch to brass filters.19th May 1937Box 93 \ 2  scan0194
Investigation into the cause of carburetter flooding on the Phantom III model.20th May 1937Box 93 \ 2  scan0195
Petrol flow tests and test bed results for a filter gauze on a Phantom III engine.20th May 1937Box 93 \ 2  scan0196
Request for the return of a faulty Phantom III carburettor from Sir John Leys' car due to repeated flooding issues.24th May 1937Box 93 \ 2  scan0197
Carburetter flooding issue on the Phantom III model and standardising parts with the Wraith.25th May 1937Box 93 \ 2  scan0198
Recurring carburettor flooding issue in a Phantom III, detailing the investigation and findings.27th May 1937Box 93 \ 2  scan0199
Schemed drawing of the Phantom III carburetter from Strombergs.31th May 1937Box 93 \ 2  scan0200
Customer complaints of the Phantom III model flooding and failing to start on hills, requesting that instructions be written for the user manual.31th May 1937Box 93 \ 2  scan0201
Procedure for checking fuel level on a Phantom III to resolve issues with starting when hot.1st Jun 1937Box 93 \ 2  scan0202
Aluminium deposits in Phantom III carburettor floatchambers during assembly.30th Jun 1937Box 93 \ 2  scan0203
Changing the float needle seatings on Phantom III E.E.C. 42 carburettors to prevent flooding.7th Jul 1937Box 93 \ 2  scan0204
Request to manufacture parts for a Phantom III throttle spring bracket.12th Aug 1937Box 93 \ 2  scan0205
The suitability of existing press tools for a simplified Phantom III throttle spring bracket.13th Aug 1937Box 93 \ 2  scan0206
Standardisation of parts relating to the replacement of an over-stressed throttle spring for the Phantom III.18th Jun 1937Box 93 \ 2  scan0207
Cost estimation for new tools required for the 'E' Series chassis production.4th May 1934Box 93 \ 2  scan0208
Flooding carburetter on a Phantom III, chassis 3-BT-149, caused by a foreign object.9th Sep 1937Box 93 \ 2  scan0209
Specification change for the Phantom III carburettor throttle spring links following a failure.17th Sep 1937Box 93 \ 2  scan0210
Request to convert a Phantom III carburetter floatchamber back to standard specification.28th Sep 1937Box 93 \ 2  scan0211
Recommending alterations for the Phantom III carburetter.12th Nov 1937Box 93 \ 2  scan0212
Phantom III carburetter consumption tests following alterations to main jets and choke spring.16th Nov 1937Box 93 \ 2  scan0213
Comparison of fuel consumption increases at various speeds and gear settings for two vehicle models.16th Nov 1937Box 93 \ 2  scan0214
Modification instructions for the 30 HP carburettor to prevent exhaust spitting on overrun.18th Nov 1937Box 93 \ 2  scan0215
Modifications to the DC 42 idle system to cure spitting on the overrun.18th Nov 1937Box 93 \ 2  scan0216
Overstressing of the Phantom III carburetter throttle return spring and the specification for a proposed replacement.25th Nov 1937Box 93 \ 2  scan0217
Stress levels and alternatives for throttle return springs on Phantom III and 30 HP models.23th Dec 1937Box 93 \ 2  scan0218
Query regarding the necessity of returning Phantom III carburettors to the Zenith Co. for fitting weaker jets.18th Jan 1938Box 93 \ 2  scan0219
The standardisation of Phantom III carburetter jets and stronger choke torsion springs.18th Jan 1938Box 93 \ 2  scan0220
Road and bench tests for Phantom III petrol drain ball valves following complaints of carbonising.1st Feb 1938Box 93 \ 2  scan0221
Test results and details for various float chamber ball drain valve configurations and conversions.1st Feb 1938Box 93 \ 2  scan0222
Manufacturing of taper washers for Phantom III carburettors.2nd Feb 1938Box 93 \ 2  scan0223
Modification of trials Phantom III carburettors at Lillie Hall.7th Feb 1938Box 93 \ 2  scan0224
Carburettor main jet standardisation for the Phantom III.13th Feb 1938Box 93 \ 2  scan0225
Enclosing a blueprint of a Phantom III carburettor showing an altered petrol level.9th Mar 1938Box 93 \ 2  scan0226
Carburettor faults including flooding and sticking chokes on Phantom III and 30 HP models.14th Mar 1938Box 93 \ 2  scan0227
Carburettor petrol level causing difficulty starting on a steep incline.28th Mar 1938Box 93 \ 2  scan0228


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