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
Blueprints for the FW.1570 Side Steering Tube (Rear) spring for the Wraith III chassis.23th Feb 1938Box 9 \ 7  07-page152
Internal order for six sets of Side Steering Tubes for the Wraith III chassis.23th Feb 1938Box 9 \ 7  07-page153
The replacement of the Side Steering Tube for the Wraith III chassis and authorising an order for 100 sets.24th Feb 1938Box 9 \ 7  07-page154
Request to trial 'Clevite' bushes on the Wraith steering pivot pins and to create an arrangement drawing.3rd Mar 1938Box 9 \ 7  07-page155
Letter from Hoffmann Manufacturing Co. Ltd. concerning hardness testing on a returned bearing.5th Mar 1938Box 9 \ 7  07-page156
Page 2 of a letter from The Hoffmann Manufacturing Co. Ltd. regarding parts.5th Mar 1938Box 9 \ 7  07-page157
Manufacturing particulars and alternative gear ratios for Wraith III steering cams.7th Mar 1938Box 9 \ 7  07-page158
Fitting bronze bushes made of 'Clevite 10' material to steering pivots and pins during a chassis rebuild.28th Mar 1938Box 9 \ 7  07-page159
Instruction to machine steering stops on Wraith III steering box FW.905 castings due to supplier limitations.31th Mar 1938Box 9 \ 7  07-page160
Hardness testing results of a Wraith steering roller.31th Mar 1938Box 9 \ 7  07-page161
Request for details on modified springs and guides for the Wraith steering system.11th Apr 1938Box 9 \ 7  07-page162
Blueprints for modifications to the Wraith III Side Steering system, Section 7070.20th Apr 1938Box 9 \ 7  07-page163
Blueprints for a modification to the Wraith III side steering tube joint.20th Apr 1938Box 9 \ 7  07-page164
Blueprints for a redesigned spring ball joint for the Wraith III cross steering.3rd May 1938Box 9 \ 7  07-page165
The instruction of three sets of parts for the Wraith steering system.22th Apr 1938Box 9 \ 7  07-page166
Letter from The Hoffmann Manufacturing Co. Ltd. regarding steering roller assemblies and bearing adjustments.3rd May 1938Box 9 \ 7  07-page167
Letter from The Hoffmann Manufacturing Co. Ltd. regarding the inspection and correction of bearings with mixed ball sizes.3rd May 1938Box 9 \ 7  07-page168
The testing of new chrome vanadium steel springs for the Wraith side steering tube.13th May 1938Box 9 \ 7  07-page169
With company contact details and a name.10th May 1938Box 9 \ 7  07-page170
Cause and resolution of a steering rattle on the Wraith model.10th May 1938Box 9 \ 7  07-page171
Wraith steering and proposing a trial of Bentley III front damper valves.3rd Jun 1938Box 9 \ 7  07-page172
The replacement and checking of springs in cross steering tubes for a 25.G.VI chassis.20th Jun 1938Box 9 \ 7  07-page173
New drawings and required standard parts for the Wraith shock dampers.27th Jun 1938Box 9 \ 7  07-page174
Requesting comparative tests on Wraith Side Steering Tube Springs made from two different types of steel.6th Jul 1938Box 9 \ 7  07-page175
Test results detailing the permanent set of Wraith side steering tube springs.16th Jul 1938Box 9 \ 7  07-page176
Scheme for the Wraith III steering column support ('F' Type) designed to suit French coachwork.15th Sep 1938Box 9 \ 7  07-page177
Production, hardness, and quality control of steering cams for the Wraith model.11th Nov 1938Box 9 \ 7  07-page178
Requesting the fitting of Wraith steering cams and needle bearing pivots to specific chassis numbers.5th Dec 1938Box 9 \ 7  07-page179
Note regarding steering positions with various internal references.17th Jan 1939Box 9 \ 7  07-page180
Note indicating the location of correspondence regarding steering failures.19th Apr 1937Box 9 \ 7  07-page181
Parts ordering and stock record card for Wraith Steering Roller Assemblies.19th Apr 1937Box 9 \ 7  07-page182
File cover for documents concerning Wraith and Bentley Steering.18th Apr 1939Box 9 \ 7  07-page183
Note concerning the roller in the Wraith and Bentley steering systems.18th Apr 1939Box 9 \ 7  07-page184
Note regarding rollers for Wraith and Bentley steering systems.19th Apr 1939Box 9 \ 7  07-page185
Order for material to produce 300 steering rollers for 'C' series cars.26th Apr 1939Box 9 \ 7  07-page186
Repeated failures of steering rollers on Bentley Wraith chassis, urging immediate replacement.5th May 1939Box 9 \ 7  07-page187
Reference note regarding the steering gear for the Wraith II and Wraith 80 B.V models.8th May 1939Box 9 \ 7  07-page188
Note on steering for the Wraith and B.II models, with a cross-reference to file 1300.12th May 1934Box 9 \ 7  07-page189
The steering for the Wraith and B.V. models.26th May 1939Box 9 \ 7  07-page190
Load specifications for Wraith steering rollers.28th Jul 1939Box 9 \ 7  07-page191
Drawing for the Wraith II rear shock dampers and anti-roll rod, detailing a cost-saving modification.25th May 1936Box 9 \ 8  08-page01
Design scheme for the Wraith II front shock damper.14th Jul 1936Box 9 \ 8  08-page02
Modifications to adapt the Phantom III damper control unit for the Wraith II.1st Sep 1936Box 9 \ 8  08-page03
Proposal for modifying the rear shock damper and roll bar connections for the Wraith II model, moving from knurled stems to broached holes and rolled serrations.12th Nov 1936Box 9 \ 8  08-page04
Query regarding the necessity of a pump suction filter on the Wraith III Governor Control Unit for dampers.19th Mar 1937Box 9 \ 8  08-page05
Comparison of two proposed front suspension designs for the Wraith III, focusing on the coil springs and shock dampers.22th Mar 1937Box 9 \ 8  08-page06
Comparison of R.R. and R.R. Buick suspension systems, focusing on bearings, loads, and structural components.22th Mar 1937Box 9 \ 8  08-page07
Comparison of suspension systems, including the R.R. type, for Bentley and Wraith models.25th Mar 1937Box 9 \ 8  08-page08
Request to build a modified Wraith front shock damper unit for a test rig.25th Mar 1937Box 9 \ 8  08-page09
The suction filter for the shock damper governor unit on the Wraith III and Phantom III models.24th Mar 1937Box 9 \ 8  08-page10
Scheme for a lubricated ball jointed connecting link for the Wraith III rear shock absorber and roll rod, replacing the failed Monroe type.12th Apr 1937Box 9 \ 8  08-page11
Noise issues in Wraith shock dampers and comparing complaint statistics with the Phantom III model.22th Apr 1937Box 9 \ 8  08-page12
Modifications to the Wraith's front and rear suspension and damper control piping.6th May 1931Box 9 \ 8  08-page13
Request to fit Phantom weights to the shock damper governor of car 25-G-VI.10th May 1937Box 9 \ 8  08-page14
The failure and modification of a Wraith III shock damper lever.26th May 1937Box 9 \ 8  08-page15
Confirming required reports and tests for the Wraith shock damper and roll rod connections.31th May 1937Box 9 \ 8  08-page16
Design of Wraith shock damper and roll rod connecting links.8th Jun 1937Box 9 \ 8  08-page17
Modifying the rear roll rod and shock absorber connecting link for the Wraith III.15th Jun 1937Box 9 \ 8  08-page18
Request to fit Phantom III governor weights to a shock damper governor unit.16th Jun 1937Box 9 \ 8  08-page19
Fitting larger governor weights to the Wraith shock damper unit due to a different gear ratio.3rd Jul 1937Box 9 \ 8  08-page20
Parts and blueprint list for a Wraith rear shock damper connecting link.26th Aug 1937Box 9 \ 8  08-page21
The results of a 10,000-mile test on 26 'G' VI front dampers.1st Sep 1937Box 9 \ 8  08-page22
Requesting the fitting of larger bellows to the front shock dampers to increase damping.1st Oct 1937Box 9 \ 8  08-page23
Ordering six sets of parts for the Wraith III Chassis rear shock damper and roll rod.16th Oct 1937Box 9 \ 8  08-page24
Request to fit a pair of rear shock dampers with the same specification as Oldsmobile dampers to a car.21th Oct 1937Box 9 \ 8  08-page25
Requesting an order for 6 sets of parts for the pressure piping for damper control on a Wraith III chassis.4th Nov 1937Box 9 \ 8  08-page26
Request to send rear shock dampers to W. Bell for an alteration to the settings.5th Nov 1937Box 9 \ 8  08-page27
Shock damper replenishment issues and proposing a new piston design.21th Dec 1937Box 9 \ 8  08-page28
Scheme for a replenishing valve for the Wraith III chassis shock damper.6th Jan 1938Box 9 \ 8  08-page29
Recommendation to use a flexible hose for the shock absorber control governor pipe on the Wraith model.27th Jan 1938Box 9 \ 8  08-page30
Pressure test results for the Wraith III Damper Control Unit.3rd Feb 1938Box 9 \ 8  08-page31
Scheme for the lubrication of Rear Shock Damper Link Ball Joints on a Wraith III model.4th Feb 1938Box 9 \ 8  08-page32
Costing and experimentation for a new square attachment on the Wraith III rear shock damper and roll rod.22th Feb 1938Box 9 \ 8  08-page33
Requesting tests on the serrations for a roll rod lever attachment, comparing it to a Vauxhall design.23th Feb 1938Box 9 \ 8  08-page34
Requesting a modification to the Wraith Governor Unit to match settings used on the P.III.2nd Mar 1938Box 9 \ 8  08-page35
Letter to Superflexit Limited requesting a sample and quotation for a flexible oil-resisting tube.7th Apr 1938Box 9 \ 8  08-page36
Letter from Superflexit Ltd confirming a request for flexible tubing samples and a quotation.7th Apr 1938Box 9 \ 8  08-page37
Letter from Superflexit Ltd. quoting prices for flexible tubing.8th Apr 1938Box 9 \ 8  08-page38
Letter to Superflexit Ltd. discussing a quotation and samples for flexible tubing.13th Apr 1938Box 9 \ 8  08-page39
Letter from Superflexit Ltd following up on a quote for 1/4' and 3/16' bore tubing.20th Apr 1938Box 9 \ 8  08-page40
Letter to Superflexit Ltd. regarding a previous communication and requesting samples of tubing.21th Apr 1938Box 9 \ 8  08-page41
The development of Wraith shock dampers, comparing production models with alternatives.19th May 1938Box 9 \ 8  08-page42
Instructions for production settings and experimental test results for Wraith shock dampers.19th May 1938Box 9 \ 8  08-page43
Testing and comparison of different rear damper settings and modifications.19th May 1938Box 9 \ 8  08-page44
Proposed work and further experiments on the Wraith rear dampers.19th May 1938Box 9 \ 8  08-page45
Blueprints and standard parts for the Wraith shock dampers.27th Jun 1938Box 9 \ 8  08-page46
Parts to use an Armstrong Shock Absorber as an anti-thump Front Brake Dashpot for the Wraith model.22th Jul 1938Box 9 \ 8  08-page47
Continued parts list detailing modifications for a Wraith chassis, including replacements and parts no longer required.22th Jul 1938Box 9 \ 8  08-page48
List of parts no longer required for sections 6180 and 6030.22th Jul 1938Box 9 \ 8  08-page49
Internal memorandum discussing the adoption of a valve for Wraith front shock dampers to prevent low speed wobbling.9th Aug 1938Box 9 \ 8  08-page50
Requesting the rig testing of new B.III front damper valves for the Wraith model.11th Aug 1938Box 9 \ 8  08-page51
The testing of Drayton Regulator Co. shock damper bellows for the Wraith model, which resulted in inferior riding qualities.13th Aug 1938Box 9 \ 8  08-page52
Reference regarding shock dampers for the Wraith model.20th Sep 1938Box 9 \ 8  08-page53
Maximum and minimum settings for the Wraith governor unit.28th Oct 1938Box 9 \ 8  08-page54
Solution for knocks in rear shock dampers by reducing side clearance for the 'B' series Wraith.1st Nov 1938Box 9 \ 8  08-page55
Standardisation and comparative pricing of Shock Damper Bellows for the Wraith III 'C' Series.9th Nov 1938Box 9 \ 8  08-page56
Investigation into a Wraith's harsh ride, focusing on the governor unit and damper pressures.28th Nov 1938Box 9 \ 8  08-page57
Comparing damper bellows for the Wraith model from two different suppliers, favouring the cheaper option.30th Nov 1938Box 9 \ 8  08-page58
Modifications to the shock damper control unit for the Wraith gearbox.13th Feb 1939Box 9 \ 8  08-page59
Note regarding shock dampers, cross-referencing to another file.6th Mar 1939Box 9 \ 8  08-page60


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