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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Test report detailing the performance and issues with various engine components.17th Mar 1928Box 12 \ 3  X704-0103
Test report on the condition and performance of various vehicle components.17th Mar 1928Box 12 \ 3  X704-0104
Continued report on component performance including a filter, magneto, ignition, oil valve, pump, fan, and clutch.17th Mar 1928Box 12 \ 3  X704-0105
Performance and condition report of various vehicle components after testing.17th Mar 1928Box 12 \ 3  X704-0106
Test report detailing observations on brake linings, axles, springs, and the petrol tank.17th Mar 1928Box 12 \ 3  X704-0107
Loose spare wheel carrier, cracked dashbrackets, and significant steering column issues requiring modifications.17th Mar 1928Box 12 \ 3  X704-0108
Test report detailing adjustments and performance of steering, hydraulic dampers, and ignition components.17th Mar 1928Box 12 \ 3  X704-0109
The performance of various electrical components including the distribution board, charge control switch, dynamo, and lighting system.17th Mar 1928Box 12 \ 3  X704-0110
Faults found in the battery, scuttle damper, and various bodywork components.17th Mar 1928Box 12 \ 3  X704-0111
Test report detailing issues with a vehicle's bodywork, including windscreen, hood, locks, and seating.19th Mar 1928Box 12 \ 3  X704-0112
Dispatch of parts to Jarvis, a delay due to a visit, and the effectiveness of Barker vs. Hooper car wings.19th Mar 1928Box 12 \ 3  X704-0113
Letter discussing three different proposed car body designs for a new 'SS' chassis, covering sports and cabriolet types.23th Mar 1928Box 12 \ 3  X704-0114
Future vehicle improvements including rubber body mountings, headlight schemes, and instrument grouping.27th Mar 1928Box 12 \ 3  X704-0115
Replacement of weak forward body support springs.27th Mar 1928Box 12 \ 3  X704-0116
Performance and structural issues of a sports car body after testing and a crash.29th Mar 1928Box 12 \ 3  X704-0117
From Ev. to Hs. regarding the design and production plan for bodies for the E.A.C.IO. and India 3 chassis.13th Apr 1928Box 12 \ 3  X704-0118
Instruction sheet to issue a number for laying various joints on a carburettor air valve suction chamber.29th Aug 1913Box 12 \ 4  04-page01
Requesting tests on special washers for a suction chamber to prevent seizing due to moisture absorption.10th Sep 1913Box 12 \ 4  04-page02
To Mr Hives regarding testing of new materials for suction chamber washers due to swelling issues.10th Sep 1913Box 12 \ 4  04-page03
Internal instruction to the Order Department to manufacture various types of washers.10th Sep 1913Box 12 \ 4  04-page04
Departmental memo regarding the availability of C.A. washers for a shock absorber experiment, with subsequent handwritten queries and clarifications.29th Sep 1913Box 12 \ 4  04-page05
Expressing frustration with the Drawing Office over a 12-month delay on a suction chamber job.19th Jan 1914Box 12 \ 4  04-page06
Chasing an overdue report on an experiment with special material washers for a carburettor suction chamber joint.19th Feb 1914Box 12 \ 4  04-page07
Request for a report on alternative suction chamber washers with a handwritten response questioning the need for a change.19th Feb 1914Box 12 \ 4  04-page08
Departmental memo about issues with suction chamber washers becoming tight on carburettors and proposed experiments.23th Feb 1914Box 12 \ 4  04-page09
Departmental memo discussing the necessity of a washer for the suction chamber and air valve assembly.23th Feb 1914Box 12 \ 4  04-page10
Note about suction chambers swelling due to moisture, making them difficult to remove without causing damage.26th Feb 1914Box 12 \ 4  04-page11
Second application memo to Mr Hives requesting a report on special joint washers for a carburetter.11th Mar 1914Box 12 \ 4  04-page12
With a received date stamp.13th Mar 1914Box 12 \ 4  04-page13
Testing different washer materials, such as lead, copper and asbestos, for air valves.13th Mar 1914Box 12 \ 4  04-page14
Suggestion to improve the air valve with a wire locking ring to prevent it from causing running issues.13th Mar 1914Box 12 \ 4  04-page15
Internal memorandum concerning an experiment on air valve washers that swell from mixture absorption, causing removal difficulties.13th Mar 1914Box 12 \ 4  04-page16
Use of fibre washers versus ebonite washers for air valves.1st Apr 1914Box 12 \ 4  04-page17
Extract concerning a 10,000-mile engine final test on an ebonite suction chamber washer.18th May 1914Box 12 \ 4  04-page18
Record of a suction chamber washer fitted to chassis 58NA.26th May 1914Box 12 \ 4  04-page19
Request for final reports on a list of experiments to be delivered without fail.27th Jul 1914Box 12 \ 4  04-page20
Instruction memo regarding suction chamber washers and the completion of an order.28th Jul 1914Box 12 \ 4  04-page21
The trial of ebonite washers as a replacement for fibre ones under an air valve.28th Jul 1914Box 12 \ 4  04-page22
Testing of different materials for suction chamber washers.29th Jul 1914Box 12 \ 4  04-page23
Blank divider page with the number 706 written at the top.1st Sep 1913Box 12 \ 4  04-page24
Instruction sheet regarding the need for an experimental number for light connecting rods.1st Sep 1913Box 12 \ 4  04-page25
Confirming verbal instruction for milling H-sections on con-rods.30th Jul 1913Box 12 \ 4  04-page26
Instructions and queries regarding experimental work on chassis 2100E, involving axles, brakes, connecting rods, and pistons.12th Nov 1913Box 12 \ 4  04-page27
Continuing work on light connecting rods for testing patented light steel pistons.14th Nov 1913Box 12 \ 4  04-page28
Instruction from Mr. Royce to test and complete light connecting rods made of white metal instead of brasses.18th Nov 1913Box 12 \ 4  04-page29
Note detailing that Light Connecting Rods were fitted to chassis 2100 E.24th Nov 1913Box 12 \ 4  04-page30
Production status of seven light connecting rods without brasses.30th Dec 1913Box 12 \ 4  04-page31
Replying to E3/P 30.12.13, stating that Light Connecting Rods are in hand and a specimen will be sent to Mr Royce.2nd Jan 1914Box 12 \ 4  04-page32
Light connecting rod sent as a specimen, noting an incorrect milling.14th Jan 1914Box 12 \ 4  04-page33
Instructions regarding a connecting rod for Mr. Royce, noting a milling defect.14th Jan 1914Box 12 \ 4  04-page34
Testing connecting rods with novel steel pistons, which was stopped due to an electric dynamometer fault.6th Mar 1914Box 12 \ 4  04-page35
Connecting rod failure during engine testing and proposing further stress tests.7th Mar 1914Box 12 \ 4  04-page36
Urgent internal request for a connecting rod for chassis 2100E, delayed due to a missing drawing.10th Mar 1914Box 12 \ 4  04-page37
Overheating issues with novel steel pistons where solder melted on the oil pipe during a bench test.11th Mar 1914Box 12 \ 4  04-page38
Instructions to dispatch a connecting rod for urgent copper plating.23th Mar 1914Box 12 \ 4  04-page39
Notification that Connecting Rod E.3486 has been copper-plated at the large end and is available from the Stores.7th Apr 1914Box 12 \ 4  04-page40
Record of a connecting rod replacement fitted to car 2100R.9th Apr 1914Box 12 \ 4  04-page41
Technical drawing illustrating axle torsional movement and its effect on brake pedal travel.26th Jan 1926Box 12 \ 5  05-page001
Suggestions for double rear brake schemes and camshaft arrangements.26th Jan 1926Box 12 \ 5  05-page002
Outlining design points and improvements for rear brakes on a Phantom model.2nd Mar 1926Box 12 \ 5  05-page003
Design schemes for a supporting pin and drum, with references to sketches.8th Feb 1926Box 12 \ 5  05-page004
Design improvements for a rear brake system.8th Feb 1926Box 12 \ 5  05-page005
The design of double rear brakes, incorporating initial suggestions and awaiting further remarks before proceeding with detailing.11th Mar 1926Box 12 \ 5  05-page006
Mr. Royce's instruction to fit the first EAC.7 model with existing New Phantom double rear brakes.11th Mar 1926Box 12 \ 5  05-page007
The collection and fitting of new Dunlop rear hubs for a 10,000-mile trial.11th Jun 1926Box 12 \ 5  05-page008
Modifications to rear brake operating gear and frame gussets for the fitment of hydraulic shock dampers.23th Jul 1926Box 12 \ 5  05-page009
Modifications to the EAC-7 rear brakes, including the camshaft, toggle gear, and a new method of cutting cams.23th Jul 1926Box 12 \ 5  05-page010
Alterations to the rear brake differential mounting and related components like the servo pull and hand brake lever.27th Aug 1926Box 12 \ 5  05-page011
Modifications for the servo stop and brake linkage arrangement.27th Aug 1926Box 12 \ 5  05-page012
Modifications to the Phantom servo brake gear to prevent the balancing lever pin fouling the suspension link.27th Aug 1926Box 12 \ 5  05-page013
Oversight regarding the alignment of rear brake cables and the accompanying solution.21th Sep 1926Box 12 \ 5  05-page014
Issue of squeaking front brakes on cars fitted with a new lightened axle.21th Sep 1926Box 12 \ 5  05-page015
Modifications to the servo linkage and hand brake lever assembly.2nd Oct 1926Box 12 \ 5  05-page016
Summary of tests carried out on front wheel brakes fitted on model 12-EX to overcome squeaks.20th Oct 1926Box 12 \ 5  05-page017
Brake squeaking, suggesting a damping arrangement fitted to the drums as a solution.20th Oct 1926Box 12 \ 5  05-page018
Proposal for a scheme to fit dampers to front brake drums on a new lightened axle to eliminate squeaking.20th Oct 1926Box 12 \ 5  05-page019
Investigation into why new, lighter front brakes fitted to axle G.74294 are more prone to squeaking.25th Oct 1926Box 12 \ 5  05-page020
Summary of tests carried out to overcome squeaks from front brakes fitted to the 12-EX model.25th Oct 1926Box 12 \ 5  05-page021
Proposal to modify clearances on Phantom front brakes to reduce side movement and prevent rattle.27th Oct 1926Box 12 \ 5  05-page022
Solutions for squeaking brakes on the 40/50 HP model, and the resulting problem of 'axle jaggers'.23th Nov 1926Box 12 \ 5  05-page023
Corrections and suggestions for the brake operation on the EAC-7 chassis.16th Dec 1926Box 12 \ 5  05-page024
Investigation into lost brake pedal movement during braking on the EAC-V11 model.28th Jan 1927Box 12 \ 5  05-page025
Analysis of lost pedal movement in the rear axle brake linkage, including a data table and diagram.28th Jan 1927Box 12 \ 5  05-page026
Test report comparing pedal travel loss in the rear axle linkage for the 40/50 HP and EAC.V11 models.28th Apr 1930Box 12 \ 5  05-page027
Analysis of the EAC.VII axle's flexibility, twist under braking torque, and lost movement due to elasticity.28th Apr 1930Box 12 \ 5  05-page028
Test results and design considerations for front wheel brake torsional pull-off springs.31th Jan 1927Box 12 \ 5  05-page029
Unsatisfactory friction arrangement on the EAC.V11 servo linkage, noting an underperforming spring.24th Feb 1927Box 12 \ 5  05-page030
Braking performance, axle behaviour, road hopping, and the need for improved damping.12th Mar 1927Box 12 \ 5  05-page031
Tests conducted on the EAC.V11 braking system to improve rigidity and address rear axle instability during rapid stops.7th Mar 1927Box 12 \ 5  05-page032
Friction and load characteristics of the EAC.7 servo linkage.21th Mar 1927Box 12 \ 5  05-page033
Suggestions to reduce sponginess and improve the EAC.7 brakes.25th Mar 1927Box 12 \ 5  05-page034
Complaint of insufficient friction in the servo linkage by supplying a new square wire spring.4th Apr 1927Box 12 \ 5  05-page035
Modifications to the brake camshafts to improve stiffness and reduce weight.5th May 1927Box 12 \ 5  05-page036
Stiffening camshafts to reduce sponginess in the rear brakes for the EAC.7 model.5th Mar 1927Box 12 \ 5  05-page037
Modification to address sponginess in the EAC.7 rear brakes.9th May 1927Box 12 \ 5  05-page038
Seeking criticism on a proposed modification for all-metal covers for brake actuating shafts.25th Aug 1927Box 12 \ 5  05-page039
Recommending the standardisation of a metal dust cover for Phantom rear brake actuating shafts.27th Aug 1927Box 12 \ 5  05-page040
The sending of two new rear brake pull off springs with reduced power.12th Sep 1927Box 12 \ 5  05-page041
The revised rear brake gear for the Phantom Sports car models X.8360 and X.7360.8th Oct 1927Box 12 \ 5  05-page042
Dispatch of drawings for the clutch pit, front brake differential, and operating shaft.7th Dec 1927Box 12 \ 5  05-page043


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