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
Cooling system inefficiencies, electrolytic corrosion, and potential design improvements for radiators.21th Aug 1929Box 15 \ 1  Scan144
Page from a typed report discussing radiator and filter performance.21th Aug 1929Box 15 \ 1  Scan145
Instructions on cleaning a radiator with Kleanwell Solution and a warning about its corrosive effect on aluminium.21th Aug 1929Box 15 \ 1  Scan146
Comparing different cooling system radiator designs regarding gap size, area, and hydraulic mean depth.24th Aug 1929Box 15 \ 1  Scan147
Aspects of radiator design, including the top tank, tubes, and shutter control.30th Aug 1929Box 15 \ 1  Scan148
Hydraulic resistance and choking issues in F2B, S.S., and V series radiator cooling systems.30th Aug 1929Box 15 \ 1  Scan149
Radiator obstruction, comparing F2B series cars with V series cars, and the role of the aluminium head.30th Aug 1939Box 15 \ 1  Scan150
Dimensional drawing for V Series, F2B Series, and S.S. Chassis components.30th Aug 1939Box 15 \ 1  Scan151
Radiator corrosion and cooling system water treatment for the 40/50 HP 'J-2' Series Chassis.31th Aug 1929Box 15 \ 1  Scan152
Standardisation of wider gap radiator tubes to reduce blockage in service.16th Aug 1929Box 15 \ 1  Scan153
Customer complaints and overheating issues related to radiators.27th Sep 1929Box 15 \ 1  Scan154
Radiator design alterations due to corrosion issues from aluminium cylinder heads.28th Sep 1929Box 15 \ 1  Scan155
Series of radiator tests for the Phantom II model.28th Sep 1929Box 15 \ 1  Scan156
Comparison of cooling performance and silting for two different diameter radiator matrix tubes.4th Oct 1929Box 15 \ 1  Scan157
Persistent choked radiator issue on chassis 56-WR belonging to H. Mills.4th Oct 1929Box 15 \ 1  Scan158
Letter of complaint from a customer regarding a persistently overheating vehicle.30th Sep 1929Box 15 \ 1  Scan159
Use of Staybright and Chromium finishes for various car parts, particularly the radiator.4th Oct 1929Box 15 \ 1  Scan160
Cross-sectional drawing, designated Section T.T., of a mechanical component with various dimensions.6th Nov 1929Box 15 \ 1  Scan161
Sketch comparing the top tank outlet areas to the matrix for the Phantom I and Phantom II models.6th Dec 1929Box 15 \ 1  Scan162
Scheme for thermostatically operated radiator shutters and requesting a new design for the 20 HP chassis.5th Oct 1929Box 15 \ 1  Scan163
'SS. Radiator Filter' and an associated drawing, Lec. 2753.14th Oct 1929Box 15 \ 1  Scan164
List of recommended improved parts for the Phantom II model.15th Oct 1929Box 15 \ 1  Scan165
Report page discussing potential modifications to luggage grids, radiator filters, central lubrication, and shock absorbers.15th Oct 1929Box 15 \ 1  Scan166
Issues with shock absorber joints, load, and wear rates.26th Oct 1929Box 15 \ 1  Scan167
Requesting to test a frame with great vertical stiffness to improve radiator steadiness and steering.26th Oct 1929Box 15 \ 1  Scan168
Issue of radiator silting and proposing a meeting to determine further preventative action.11th Nov 1929Box 15 \ 1  Scan169
The silting up of radiators, proposing a switch to cast iron heads on the Phantom II.14th Nov 1929Box 15 \ 1  Scan170
Instruction to stop work on Phantom II thermostatically operated radiator shutters due to a supply issue.22th Nov 1929Box 15 \ 1  Scan171
New, cleanable radiator design for testing.25th Nov 1929Box 15 \ 1  Scan172
Conference decision to instruct 40/50 HP chassis users to add Sodium Phosphate to their radiator systems.26th Nov 1929Box 15 \ 1  Scan173
Requesting the correct chemical symbol and weight for Sodium Phosphate to be used in radiator cooling water.26th Nov 1929Box 15 \ 1  Scan174
Specifications and required alterations for Phantom II radiators.3rd Dec 1929Box 15 \ 1  Scan175
Tests to determine the effects of outlet pipe restriction on radiator cooling efficiency.7th Dec 1929Box 15 \ 1  Scan176
Radiator silting and water loss in Phantom II cars, recommending a change to the red warning light's operating temperature.7th Dec 1929Box 15 \ 1  Scan177
Tests comparing radiator performance with a 33% Glycerine and water mixture versus pure water during hill climbing and high-speed driving.12th Dec 1929Box 15 \ 1  Scan178
Radiator jellying and the proposed stiffening of the Phantom II frame.18th Dec 1929Box 15 \ 1  Scan179
Responding to a query about radiator jellying and confirming that drawings for an approved proposal will be sent soon.20th Dec 1929Box 15 \ 1  Scan180
List of information required on the existing water system for a Phantom II steam cooling installation.23th Dec 1929Box 15 \ 1  Scan181
The shipment of Sylphon tubes for Phantom II radiator thermostats.23th Dec 1929Box 15 \ 1  Scan182
Letter from Rolls Royce of America confirming an order for six thermostat assemblies from The Fulton Sylphon Company.9th Dec 1929Box 15 \ 1  Scan183
Testing the force required to operate radiator shutters and proposing geometry changes.24th Dec 1929Box 15 \ 1  Scan184
Corroded and leaking aluminium tubes in Phantom cylinder heads, suggesting trials of different materials and anodical treatment.27th Dec 1929Box 15 \ 1  Scan185
Proposal and cost for experimenting with square tube radiators on the Phantom II.31th Dec 1929Box 15 \ 1  Scan186
Issues with cylinder head tubes and the detrimental effects of using Sodium Phosphate in the radiator.1st Jan 1930Box 15 \ 1  Scan187
Loss of water issue and cylinder head tube trouble on chassis 56-WR, suspected to be caused by excessive Sodium Phosphate.1st Jan 1930Box 15 \ 1  Scan188
Dissatisfaction with the 'wingle guide' for the Phantom radiator shutter thermostat and proposing a new double guide design.1st Jan 1930Box 15 \ 1  Scan189
Cancelling a modification to the radiator inlet flange due to leaks caused by back pressure.3rd Jan 1930Box 15 \ 1  Scan190
Request to modify an obsolete radiator from flow tests for a Phantom II test car.6th Jan 1930Box 15 \ 1  Scan191
Blueprint detailing a light radiator for an experimental test.16th Jan 1930Box 15 \ 1  Scan192
Heavily faded document page with a purple ink stamp from the printing department.16th Jan 1930Box 15 \ 1  Scan193
Tests conducted on water pump cavitation for radiators.10th Jan 1930Box 15 \ 1  Scan194
Report page detailing the function and limitations of a radiator's cooling cycle, including cavitation.10th Jan 1930Box 15 \ 1  Scan195
Analysis of radiator performance, hydraulic resistance, and cooling system limitations for the Phantom II.10th Jan 1930Box 15 \ 1  Scan196
Engine cooling circulation issues, radiator choking, and potential solutions.10th Jan 1930Box 15 \ 1  Scan197
Report summarizing radiator design test results, including comparisons with Chrysler, cavitation findings, and shutter weight.10th Jan 1930Box 15 \ 1  Scan198
Comparative table of radiator specifications.13th Jan 1930Box 15 \ 1  Scan199
Tests conducted on the Phantom II water cooling system to determine the effect of temperature and restriction.13th Jan 1930Box 15 \ 1  Scan200
Engine cooling system performance, focusing on cavitation and pressure effects from a restriction valve.13th Jan 1930Box 15 \ 1  Scan201
Graph showing the effect of temperature and restriction on water flow and suction side depression in a Phantom II cooling system.13th Jan 1930Box 15 \ 1  Scan202
Graph showing pressure in the Phantom II cooling system against engine RPM with different nozzle and valve configurations.22th Jan 1930Box 15 \ 1  Scan203
Graph showing water flow and suction side depression for a Phantom II cooling system with varying temperatures and nozzle restrictions.13th Jan 1931Box 15 \ 1  Scan204
Graph showing the effect of temperature and a restricted delivery nozzle on water flow for a Phantom II cooling system.14th Jan 1930Box 15 \ 1  Scan205
Requesting modifications to the Phantom II thermo-operated shutters.14th Jan 1930Box 15 \ 1  Scan206
Requesting the results of an investigation into a 'jellying' issue on a Trials Sedanca car.21th Jan 1930Box 15 \ 1  Scan207
Short trial of the 20/60 Vauxhall, focusing on radiator wobble and engine smoothness.27th Jan 1930Box 15 \ 1  Scan208
Radiator movement and frame rigidity in relation to the steering box and front spring shackles.1st Jan 1930Box 15 \ 1  Scan209
Potential solutions to a radiator shimmy problem on Phantom models.1st Jan 1930Box 15 \ 1  Scan210
Design revisions to the radiator, bonnet, and dash for Sir Henry Segrave's Phantom II.31th Jan 1930Box 15 \ 1  Scan211
Modified dashboard shape for Continental Touring Cars.2nd Feb 1930Box 15 \ 1  Scan212
Tabular record of test times, part numbers, and gap sizes for various chassis.2nd Feb 1930Box 15 \ 1  Scan213
Radiator cooling performance, including frontal area, bonnet ventilation, and fan specifications.4th Feb 1930Box 15 \ 1  Scan214
Solution for radiator jellying on the 40/50 chassis using a Diabolo rubber support.5th Feb 1930Box 15 \ 1  Scan215
Issues with the Phantom II radiator filler cap seal and proposing modifications.7th Feb 1930Box 15 \ 1  Scan216
Blueprint showing a modification for a Phantom II radiator filler cap.10th Feb 1930Box 15 \ 1  Scan217
Design of the bonnet and radiator for the Phantom model.10th Feb 1930Box 15 \ 1  Scan218
Modifications to radiator and bonnet design, referencing the 'Segrave Experiment'.10th Feb 1930Box 15 \ 1  Scan219
Causes of radiator shimmy on the Phantom II, evaluating suspension options and suggesting experiments.10th Feb 1930Box 15 \ 1  Scan220
Proposed modification to a chassis to cure radiator shimmy, including a sketch.11th Feb 1930Box 15 \ 1  Scan221
Use of harder rubber for semi-isolation pieces to address radiator shimmy.11th Feb 1930Box 15 \ 1  Scan222
Revised bonnet and dash design for the Phantom II, including radiator modifications.13th Feb 1930Box 15 \ 1  Scan223
Various schemes to cure 'radiator jellying', requesting sketches for a single point body mounting solution.15th Feb 1930Box 15 \ 1  Scan224
Tests for a problem known as 'frame jellying', focusing on shock absorber mounting.15th Feb 1930Box 15 \ 1  Scan225
Outlining the methods of observation used to study the phenomenon of 'frame jellying'.19th Feb 1930Box 15 \ 1  Scan226
Analysis of 'frame jellying' and 'high speed wobble' through stationary and road tests.19th Feb 1930Box 15 \ 1  Scan227
Analysis of chassis frame twisting, radiator movement during 'jellying', and the effect of the frame on wobbles.19th Feb 1930Box 15 \ 1  Scan228
The effect of shock damper loading and experiments to alter frame periodicity to reduce chassis 'jellying'.19th Feb 1930Box 15 \ 1  Scan229
Experiments with body attachments, sub-frame mounting, and damping characteristics.19th Feb 1930Box 15 \ 1  Scan230
Experiments to improve steering and reduce wobble by altering the front axle assembly.19th Feb 1930Box 15 \ 1  Scan231
Summary of efforts to cure a chassis 'jellying' problem by exploring different methods of damping.19th Feb 1930Box 15 \ 1  Scan232
Note on fitting spare wheels and adding damping between the scuttle and dash.19th Feb 1930Box 15 \ 1  Scan233
Blueprint of a test rig and recording apparatus for measuring radiator movement.20th Feb 1930Box 15 \ 1  Scan234
Heavily faded document with a purple 'PRINT ROOM' stamp in the top left corner.20th Feb 1930Box 15 \ 1  Scan235
Design for an improved bonnet and dashboard for the Phantom II, referencing Sir Henry Segrave's car.27th Feb 1930Box 15 \ 1  Scan236
Tenth report of the design committee discussing frame jellying, rear axle failure, and battery recharging capacity.5th Mar 1930Box 15 \ 1  Scan237
Testing and investigation into a frame and radiator 'jellying' vibration issue.12th Mar 1930Box 15 \ 1  Scan238
Explanation of measurements from various test curves related to engine mounting and frame vibration.17th Mar 1930Box 15 \ 1  Scan239
Bumper tests measuring the relative amplitude of movement of the radiator and engine.17th Mar 1930Box 15 \ 1  Scan240
Proposed modified bonnet, radiator, and dash for two car models.14th Mar 1930Box 15 \ 1  Scan241
Depot sheet concerning the corrosion of aluminium cylinder head tubes and the recommendation for their replacement.21th Mar 1930Box 15 \ 1  Scan242
Fifteenth design committee report discussing the Phantom oil filter and radiator mounting, and a compression ignition unit.21th Mar 1930Box 15 \ 1  Scan243


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