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
Querying the engine bore dimensions for the Phantom III, Bentley 3.5 litre, and 20/25 models.3rd Sep 1936Box 101 \ 3  scan0032
Confirming the cylinder bore dimension for the 20/25 model, comparing it to the small bore Bentley and the Phantom III.4th Sep 1936Box 101 \ 3  scan0033
Serious customer complaints regarding the Phantom III's steering, gearbox, and clutch.28th Sep 1936Box 101 \ 3  scan0034
Minor troubles and development updates for various car components.28th Sep 1936Box 101 \ 3  scan0035
Vehicle testing issues including radiator appearance, carburetion, petrol lock, tyre noise, and silent tappets.28th Sep 1936Box 101 \ 3  scan0036
Progress report on the 25/30 HP model covering tests in France, steering, oil consumption, clutch, and improved idling.28th Sep 1936Box 101 \ 3  scan0037
Various tests and issues for Bentley vehicles, including a 15,000-mile test in France.28th Sep 1936Box 101 \ 3  scan0038
Progress report on developments including the exhaust system, ride, body, engine, and rear axle.28th Sep 1936Box 101 \ 3  scan0039
Design and installation of an earthing contact for the front hubs on Bentley, 25/30, and Phantom III cars to improve wireless performance.29th Sep 1936Box 101 \ 3  scan0040
Scheme for improved engine breathing on the 25/30 HP engine, requiring new parts for an experiment.30th Sep 1936Box 101 \ 3  scan0041
Confirming the decision not to proceed with previously requested experiments.9th Oct 1936Box 101 \ 3  scan0042
Summary of car work jobs currently instructed for various vehicle models.19th Oct 1936Box 101 \ 3  scan0043
List of engineering notes on various vehicle components such as brakes, clutch, steering, and cylinders.19th Oct 1936Box 101 \ 3  scan0044
List of modifications and parts for Bentley, 25/30 HP, and Phantom III units.19th Oct 1936Box 101 \ 3  scan0045
List of engine parts and modifications with corresponding reference numbers and dates.19th Oct 1936Box 101 \ 3  scan0046
List for the numbering of 25/30-HP chassis units.15th Oct 1936Box 101 \ 3  scan0047
Progress report on the 15,000-mile car (35-EX), covering tests and solutions for steering, clutch, hydraulic tappets, and oiling issues.7th Dec 1936Box 101 \ 3  scan0048
Technical update on the development and testing of valve springs, exhaust systems, bearings, tyre noise reduction, and brakes.7th Dec 1936Box 101 \ 3  scan0049
Status update on the Phantom III chassis, engine, gearbox, costs, and the 25/30 HP model.7th Dec 1936Box 101 \ 3  scan0050
Progress report on component endurance testing, design modifications, and production status for the 25/30 HP, Bentley, and Wraith models.7th Dec 1936Box 101 \ 3  scan0051
Technical update on Bentley development, covering brakes, suspension, clutch, body, engine, and bearings.7th Dec 1936Box 101 \ 3  scan0052
Improvements and tests for engine mountings, gearbox costs, aluminium alloys, spark plugs, and light alloy drums.7th Dec 1936Box 101 \ 3  scan0053
Table detailing the weights of various 1937 Buick parts across different series.24th Mar 1937Box 101 \ 3  scan0054
Upcoming visit to Cricklewood to investigate slow running complaints on a 25/30 model.1st May 1937Box 101 \ 3  scan0055
Comparison table of specific capacities for Bent., 25/30, and Ph.III car engines.3rd May 1937Box 101 \ 3  scan0056
Testing of a short duration camshaft on the Wraith and comparing its performance to American cars.10th May 1937Box 101 \ 3  scan0057
Investigation into poor slow running (idling) on the 30 HP model.6th May 1937Box 101 \ 3  scan0058
Engine development including governors, ignition systems, camshaft modifications, and performance issues.6th May 1937Box 101 \ 3  scan0059
Experimental modifications to the 25/30 ignition governor to improve slow running and reduce detonation.13th May 1937Box 101 \ 3  scan0060
Engine governor characteristics, timing adjustments, and proposals for standardizing components.13th May 1937Box 101 \ 3  scan0061
Comparative table of technical specifications for various automobile engines.19th May 1937Box 101 \ 3  scan0062
Weight comparison between a 'Square engine' and a 'Phoenix' engine.19th May 1937Box 101 \ 3  scan0063
Poor slow running on a 25/30 HP chassis, specifically the Air Minister's car.10th May 1937Box 101 \ 3  scan0064
Tests of a special ignition governor and new coil to address poor slow running on the 25/30HP engine.28th May 1937Box 101 \ 3  scan0065
Slow running, performance, and acceleration test results for a GAE-20 30 HP vehicle.1st Jun 1937Box 101 \ 3  scan0066
Engine tests to improve slow running by adjusting tappet clearances and testing various ignition coils.1st May 1937Box 101 \ 3  scan0067
List of three engineering modifications concerning hand control, coil, and camshaft.1st Jun 1937Box 101 \ 3  scan0068
Instructions to improve slow running (idling) on the 25/30 model.5th Jun 1937Box 101 \ 3  scan0069
The investigation into slow running and idling issues with Lord Swinton's car.5th Jun 1937Box 101 \ 3  scan0070
Investigation into slow running and poor idling issues, detailing modifications and test results.5th Jun 1937Box 101 \ 3  scan0071
Carburettor characteristics and planned modifications for a car identified as 'Sheriff'.5th Jun 1937Box 101 \ 3  scan0072
Instructions for modifying the 25/30 governor to improve slow running with the deturbulated cylinder head.7th Jun 1937Box 101 \ 3  scan0073
Table of engine RPM versus crank degrees advance.7th Jun 1937Box 101 \ 3  scan0074
Dispatch memo regarding the transport of a 25/30 oil filler and cap to St. Pancras for use at Kingsbury.8th Jun 1937Box 101 \ 3  scan0075
Phone message detailing the arrival of a 30 HP Filler at St. Pancras station.8th Jun 1937Box 101 \ 3  scan0076
Instruction to modify depot sheet instructions for slow running, specifically concerning tappet settings.8th Jun 1937Box 101 \ 3  scan0077
Rectifying slow running and idling issues on Lord Swinton's 30.HP car.8th Jun 1937Box 101 \ 3  scan0078
Findings for improving slow running, with recommendations on tappet clearances, ignition timing, and spark plugs, plus other issues.8th Jun 1937Box 101 \ 3  scan0079
Technical memorandum detailing ignition timing adjustments for the 25/30 HP engine at slow speeds.10th Jun 1937Box 101 \ 3  scan0080
Page 2 of a document discussing a control unit designed to replace an existing vacuum unit for running with a partly opened throttle.10th Jun 1937Box 101 \ 3  scan0081
25/30 HP chassis output programme from the erecting bay to the test department for June to December 1937.10th Jun 1937Box 101 \ 3  scan0082
The issue of spitting in the silencer for the 30 HPD.C.42.14th Jun 1937Box 101 \ 3  scan0083
Modification to fix poor slow running on the 25/30 model, requesting information on the cost before a general rollout.18th Jun 1937Box 101 \ 3  scan0084
Cost and distribution of a modification for a 'slow running' issue on the 25/30 HP chassis.19th Jun 1937Box 101 \ 3  scan0085
The slow running of a 25/30 model, requesting coils for a modification.3rd Jul 1937Box 101 \ 3  scan0086
The supply of non-standardised coils for a 25/30 HP model with a slow running issue.5th Jul 1937Box 101 \ 3  scan0087
Proposed programme for 100 chassis of the 25/30 HP S.2 Series, numbers 7913 to 8012.7th Jul 1937Box 101 \ 3  scan0088
Production schedule for the 25/30 HP Chassis S.2 Series, numbers 7913-8012.28th Jun 1937Box 101 \ 3  scan0089
Works chart detailing the weekly chassis output programme for the 25/30 HP model from July to December 1937.15th Jul 1937Box 101 \ 3  scan0090
Standardisation of parts for an Ignition Governor E.60879 and modified spring to improve idling on a 25/30 HP model.14th Jun 1937Box 101 \ 3  scan0091
Nil extra tool cost and production start for the P2 series chassis.15th Sep 1937Box 101 \ 3  scan0092
Works chart detailing the weekly output programme for the 25/30 HP chassis from the erecting bay to the test department for late 1937.15th Sep 1937Box 101 \ 3  scan0093
Production report detailing weekly output figures and cumulative position on series for early 1938.15th Sep 1937Box 101 \ 3  scan0094
Alteration notice for the 25/30 HP Chassis inlet pipes, replacing part K.4316 with two K.4010 nuts.23th Sep 1937Box 101 \ 3  scan0095
Requesting mileage details for a recently sold experimental car.15th Dec 1937Box 101 \ 3  scan0096
Stating the mileage of vehicle GAE.20 since an engine change.20th Dec 1937Box 101 \ 3  scan0097
Progress report on thermoid clutch linings, a silencer spitting complaint, a new accelerator pump piston, and general economy.20th Apr 1938Box 101 \ 3  scan0098
Persistent quality issues with cast iron brake drums from supplier Messrs. Lake & Elliott, leading to a search for an alternative source.14th Mar 1935Box 101 \ 4  scan0001
Allocation of an ex-Trials car, G.A.E.20, for testing smaller wheels in France.15th Mar 1935Box 101 \ 4  scan0002
Noise test for a ventilated dynamo, identifying an electrical noise during charging while the fan remains quiet.15th Mar 1935Box 101 \ 4  scan0003
Use of chassis 21-G-IV instead of GAE-20 for a 10,000-mile test on a 20/25 model with smaller wheels.15th Mar 1935Box 101 \ 4  scan0004
10,000-mile test on a 20/25 model with smaller wheels.18th Mar 1935Box 101 \ 4  scan0005
Confirming alterations to the front and rear springs on a 20/25 HP chassis with smaller wheels.18th Mar 1935Box 101 \ 4  scan0006
Fitting smaller wheels to a 20/25 model for a 10,000-mile test and a suggestion to increase the rear spring camber.19th Mar 1935Box 101 \ 4  scan0007
Smaller wheels for the 20/25 model, a 10,000-mile test, and rear spring adjustments.19th Mar 1935Box 101 \ 4  scan0008
Sourcing and suitability of cast iron brake drums for various chassis.19th Mar 1935Box 101 \ 4  scan0009
Steering lightness and a potential modification using a shorter pendulum lever on car GAE-20.21th Mar 1935Box 101 \ 4  scan0010
The readiness of a modified dynamo for a test on a 20/25 HP Chassis.25th Mar 1935Box 101 \ 4  scan0011
List of parts to be fitted to a 20/25 HP car for a 10,000-mile test.26th Mar 1935Box 101 \ 4  scan0012
Standardisation of chassis dynamos and clutch pits between the 20/25 HP and Bentley models.27th Mar 1935Box 101 \ 4  scan0013
New design for a 25-HP crankcase breather pipe, incorporated into the oil filler, to be fitted to a car for France.28th Mar 1935Box 101 \ 4  scan0014
Technical memo discussing the steering and suspension geometry implications of fitting 17-inch rims to a 20/25 HP chassis.28th Mar 1935Box 101 \ 4  scan0015
Modifications to the rear springs on a 20/25 HP model to restore ground clearance when fitted with 17' rims.3rd Apr 1935Box 101 \ 4  scan0016
Preparations for a 10,000-mile test on a 20/25 model with smaller wheels.5th Apr 1935Box 101 \ 4  scan0017
Typed letter from France reporting on car performance, specifically clutch and crankshaft damping issues, and upcoming track testing.6th Apr 1935Box 101 \ 4  scan0018
Modifications to the 20/25 connecting rod big end and the fitting of a Spectre steering column for a 10,000-mile test.8th Apr 1935Box 101 \ 4  scan0019
15,000-mile test in France for the 21-G-IV vehicle to trial a new Spectre petrol pump, tap, and warning gauge.8th Apr 1935Box 101 \ 4  scan0020
Specification of modifications for the 15,000-mile test car 21-G-IV.8th Apr 1935Box 101 \ 4  scan0021
The fitting of a new petrol system for a 15,000 miles test on car 21-G-IV.9th Apr 1935Box 101 \ 4  scan0022
Letter from coachbuilders Hooper & Co. regarding a delay in handing over a car due to issues with body noises and temporary paint.16th Apr 1935Box 101 \ 4  scan0023
List of instructions for modifications and examinations for chassis 21-G-IV before its dispatch to France.16th Apr 1935Box 101 \ 4  scan0024
Requesting a modification to the petrol system's tank unit float for the 15,000 miles test.9th Apr 1935Box 101 \ 4  scan0025
Testing a new big end bearing and modifications to connecting rods for improved lubrication.18th Apr 1935Box 101 \ 4  scan0026
List of modifications and specifications for car 21-G-IV before its dispatch to France.24th Apr 1935Box 101 \ 4  scan0027
Requesting an alteration to the dashboard bracket to accommodate a fuel pump rubber mounting.25th Apr 1935Box 101 \ 4  scan0028
Specification of the Petrol System for model 21-G-IV.25th Apr 1935Box 101 \ 4  scan0029
Note on the delay of the 15,000-mile smaller wheels test for car 21-G-IV due to the fitting of a new hypoid rear axle.26th Apr 1935Box 101 \ 4  scan0030
Delaying the 15,000-mile smaller wheel test on car 21-G-IV to fit a new hypoid rear axle.26th Apr 1935Box 101 \ 4  scan0031
Summary of specifications for the 21-G-IV model being prepared for a 10,000 miles test.29th Apr 1935Box 101 \ 4  scan0032
Vehicle modifications including noise insulation, brake re-lining, and issues with fitting a new rear axle.29th Apr 1935Box 101 \ 4  scan0033


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