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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Urgent internal memo requesting a detailed cost statement for tools and spares on 20/25 HP and Phantom ll cars.11th Jan 1932Box 105 \ 4  scan0221
Price inquiries for various spanners and tommy bars for car tool kits.11th Jan 1932Box 105 \ 4  scan0222
Requesting comparative prices for spanners and clarification on part marking requirements.1st Jan 1932Box 105 \ 4  scan0223
Proposal for a new hub removing spanner for the 20/25 HP chassis.18th Jan 1932Box 105 \ 4  scan0224
Suggesting cost savings on car tool and spares equipment, with a breakdown of current and future costs.1st Jan 1932Box 105 \ 4  scan0225
Note listing part numbers and the pricing of tools for a Phantom II car.16th Jan 1932Box 105 \ 4  scan0226
Economies by deleting certain tools and spare parts from the standard car equipment.16th Jan 1932Box 105 \ 4  scan0227
Cost-saving measures through tool substitutions and component design alterations.14th Jan 1932Box 105 \ 4  scan0228
Standardizing plugs and spanners to reduce costs, with a revised tool kit list.16th Jan 1932Box 105 \ 4  scan0229
Continued list of tools and parts, including tyre levers, gauges, spanners, and hub tools.15th Jan 1932Box 105 \ 4  scan0230
List of spare parts and tools to be deleted from the 40/50 HP Phantom II chassis equipment for cost savings.15th Jan 1932Box 105 \ 4  scan0231
Cost-saving measures through alterations to tools and chassis components.16th Jan 1932Box 105 \ 4  scan0232
Rationalization and potential economies of car tool and spares equipment.27th Jan 1932Box 105 \ 4  scan0233
The deletion of chassis spares and tools for economy on the 20/25 HP and 40/50 HP models.3rd Feb 1932Box 105 \ 4  scan0234
Recommending the replacement of single-ended spanners with double-ended jaw spanners for car tool kits, detailing parts, prices, and savings.1st Feb 1932Box 105 \ 4  scan0235
Confirming the decision to adopt double-ended jaw spanners once the stock of single-ended spanners is exhausted.5th Feb 1932Box 105 \ 4  scan0236
Confirming the arrangement for double-ended jaw spanners to be adopted for the 20/25 HP 'U' series and 40/50 R.H. and L.H. chassis.9th Feb 1932Box 105 \ 4  scan0237
Arguing against changing from single-ended to double-ended car spanners.13th Feb 1932Box 105 \ 4  scan0238
Chassis tool kit, particularly single-ended spanners, and potential cost savings.19th Feb 1932Box 105 \ 4  scan0239
Standardisation of chassis parts, specifically the reversion to double ended jaw spanners for car tool kits.6th Feb 1932Box 105 \ 4  scan0240
Standardisation of chassis parts form detailing the introduction of a new part.10th Apr 1932Box 105 \ 4  scan0241
Suggesting the number of spanners in the 20/25 chassis tool kit is unwarranted.22th Feb 1932Box 105 \ 4  scan0242
Adoption of double-ended spanners for economy, noting a preference for single-ended ones.30th Mar 1932Box 105 \ 4  scan0243
Questioning the adequacy of the double-ended spanner in the tool kit for tappet adjustment.8th Aug 1932Box 105 \ 4  scan0244
Rationale for including a double-ended spanner in the tool kit for 20/25 HP cars.9th Aug 1932Box 105 \ 4  scan0245
Options for tool storage on 40/50, 20/25, and Bentley models, moving away from under-bonnet locations.6th Feb 1934Box 105 \ 4  scan0246
Request to include a tappet spanner in the tool kits for the Phantom III & 25 HP cars.5th Mar 1936Box 105 \ 4  scan0247
On the correct procedure for removing the distributor cam on Bentley and 20/25 HP cars to prevent engine detonation.12th Jun 1936Box 105 \ 4  scan0248
Secret memo concerning the introduction of a new pedal position on chassis for the Indian market.12th May 1925Box 105 \ 4  scan0249
Standardisation of chassis parts by moving the pedals nearer the dashboard to improve body space.18th May 1926Box 105 \ 4  scan0250
Standardisation Sheet No.5470, for putting the pedals nearer the dash on the 20 HP chassis.16th Jun 1926Box 105 \ 4  scan0251
Confirming consent for the incorporation of stops on the 'India' plus FWB brake pedals.26th May 1925Box 105 \ 4  scan0252
Authorising a standardisation to move the pedals on the 20 HP model 2 inches nearer the dash.16th Jun 1926Box 105 \ 4  scan0253
Proposal to improve accelerator pedal operation by adding a radius to the pedal plate.16th Apr 1928Box 105 \ 4  scan0254
Proposed new positions for the 20 HP steering column and pedals.29th Jun 1929Box 105 \ 4  scan0255
Driver seating positions, cushion dimensions, and adjustments for different driver sizes.29th May 1930Box 105 \ 4  scan0256
Modifications to the clutch and brake pedals for the J.3 model, including prints for new schematics.10th Mar 1931Box 105 \ 4  scan0257
The modification and standardisation of adjustable clutch pedals for the 25 HP Synchro Mesh Gearbox.15th Jul 1931Box 105 \ 4  scan0258
Complaints of a driver's shoe getting jammed by the brake pedal on the 20/25 HP Chassis.11th Nov 1931Box 105 \ 4  scan0259
Tapping noise from pedal movement caused by engine torsion.24th Nov 1931Box 105 \ 4  scan0260
New scheme for pedal mounting, modified from original Japan schemes to suit a new gearbox.24th Nov 1931Box 105 \ 4  scan0261
Sending drawing N.Sch.3398, which shows the J.3. accelerator pedal and notes its similarity to the Phantom's.31th Dec 1931Box 105 \ 4  scan0262
The scoring of a pedal shaft bearing on a 25 HP chassis due to inadequate lubrication, requiring a design alteration.27th May 1932Box 105 \ 4  scan0263
Preventing clutch pedal oscillation on J.III and Peregrine models by adding a spring thackery washer.15th Jul 1932Box 105 \ 4  scan0264
Modification to the 25 HP accelerator pedal to reduce its operational load.8th Oct 1935Box 105 \ 4  scan0265
Loose diagonal link on the pedal shaft of car 22-G-V, recommending a modification for production cars.5th May 1936Box 105 \ 4  scan0266
Cost-saving modification for the 25/30 model pedals, changing a stay from a brazed assembly to a single forged piece.25th Mar 1937Box 105 \ 4  scan0267
Requesting suggestions for fixing recurrent squeaks on chassis GNC-28.14th Nov 1938Box 105 \ 4  scan0268
The investigation and resolution of servo squeaks for chassis GNC-26.21th Nov 1938Box 105 \ 4  scan0270
Inefficient servos in Bentley chassis due to wear on dowel pins and a proposed solution.18th Oct 1938Box 105 \ 4  scan0271
Diagram illustrating wear and a subsequent modification to Servo-Frein (Servo Brake) components.14th Oct 1938Box 105 \ 4  scan0272
Modifications and issues with the servo on a Bentley chassis.20th Oct 1938Box 105 \ 4  scan0273
Resolving a knock in a Wraith's rear shock damper by reducing lateral play.20th Sep 1938Box 105 \ 4  scan0274
Front spring failures and recommending brake improvements on the 20 HP car.27th Nov 1924Box 106 \ 1  scan0001
Continued discussion on brake drum scoring and wear with 4-wheel servo-assisted brakes.9th Feb 1925Box 106 \ 1  scan0002
Ordering new 38' type springs and resolving a design issue concerning clip widths with the supplier, Messrs Woodhead.9th Feb 1925Box 106 \ 1  scan0003
The design and quality of a Registered Rebound Clip for a 20 HP Chassis, supplied by Woodheads.16th Feb 1925Box 106 \ 1  scan0004
Dimensional suitability of a Woodhead type front spring clip.17th Feb 1925Box 106 \ 1  scan0005
Letter regarding proposals from Thos. Firth & Sons for new front springs F.53332 for the 20 HP Chassis in India.17th Feb 1925Box 106 \ 1  scan0006
Letter from Thos. Firth & Sons regarding proposals and modifications for 20 HP Front Springs.16th Feb 1925Box 106 \ 1  scan0007
Specification sheet for a Goshawk Front Spring, Drawing No. 53332.23th Feb 1925Box 106 \ 1  scan0008
The specifications and ordering of new front springs for the 20 HP Chassis for India.23th Feb 1925Box 106 \ 1  scan0009
Letter discussing a sample clip for a 20 HP chassis for India, quoting a supplier regarding its specifications.3rd Mar 1925Box 106 \ 1  scan0010
Forwarding letters from suppliers regarding changes to the clip plate end and spring camber for the 20 HP Chassis.6th Mar 1925Box 106 \ 1  scan0011
Testing, failure, and return of front springs for a 20 HP Chassis destined for India.2nd Apr 1925Box 106 \ 1  scan0012
On the failure of 20 HP front springs and analysis of replacements for India.3rd Apr 1925Box 106 \ 1  scan0013
Secret memo discussing the difficulty and potential solutions for front spring failures on the 20 HP 'India' chassis.6th Apr 1925Box 106 \ 1  scan0014
Correspondence regarding the examination of broken front springs for a 20 HP Chassis (India) by Firth & Sons Ltd.27th Apr 1925Box 106 \ 1  scan0015
Specifications and design differences of 'India' front springs sent to the Experimental Department.30th Apr 1925Box 106 \ 1  scan0016
Testing of front springs for a 20 HP Chassis for India, and arranging a meeting with the supplier.11th May 1925Box 106 \ 1  scan0017
Specifications for ordering 'India' F.W.B. front springs.15th May 1925Box 106 \ 1  scan0018
Experimental modification to the front spring buffers to reduce hitting.15th May 1925Box 106 \ 1  scan0019
Specifications for stiffer front road springs for the 'India' chassis.18th May 1925Box 106 \ 1  scan0020
Bumping test for an 'India' Rear Axle with a wider track.5th May 1925Box 106 \ 1  scan0021
The bump test of a 20 HP 'India' chassis.22th May 1925Box 106 \ 1  scan0022
Failures of chassis cross members and spring stops during endurance testing.1st May 1925Box 106 \ 1  scan0023
Tabulating the life and failure characteristics of vehicle leaf springs.22th May 1925Box 106 \ 1  scan0024
Increased front spring stiffness and camber to resolve steering issues for cars in India.6th May 1925Box 106 \ 1  scan0025
Broken top leaf on a near-side front spring during tests of a 20 HP car in France.1st Jun 1925Box 106 \ 1  scan0026
Specifications and delivery of 'India' plus F.W.B. front springs.10th Jun 1925Box 106 \ 1  scan0027
The delivery of front springs and gaiters for the 20 HP chassis.10th Jun 1925Box 106 \ 1  scan0028
Requesting further particulars on a car spring and detailing stress improvements on new springs.10th Jun 1925Box 106 \ 1  scan0029
Secret memo detailing the weight and spring specifications for a car designated 'INDIA'.12th Jun 1925Box 106 \ 1  scan0030
Secret memo confirming modification instructions for the 'INDIA' chassis front axle and brakes are complete.20th Jun 1925Box 106 \ 1  scan0031
Chassis improvements, including stronger front springs and modifications to the front wheel brakes.20th Jun 1925Box 106 \ 1  scan0032
Gearbox design improvements, specifically concerning the double pinion and splines.20th Jun 1925Box 106 \ 1  scan0033
Continued note discussing clearances for a gate and interlock in a sliding gear mechanism.23th Jun 1925Box 106 \ 1  scan0034
Approval and modifications to the 'India' car's 4-wheel brakes and springs.23th Jun 1925Box 106 \ 1  scan0035
Secret memo regarding the preparation of a Barker limousine with a special front axle to test springs for the 'India' model.24th Jun 1925Box 106 \ 1  scan0036
Delivery of springs for a 20 HP India Chassis and a further requirement from Firth's.24th Jun 1925Box 106 \ 1  scan0037
Test results for new strong springs on two 'secret cars', suggesting a change to lessen vibrations.29th Jun 1925Box 106 \ 1  scan0038
The performance of 'India' front springs on 20 HP cars.1st Jul 1925Box 106 \ 1  scan0039
Page asking which springs are to be standardised.29th Jun 1925Box 106 \ 1  scan0040
Secret memo discussing the results of testing new, stronger springs on two cars intended for India.29th Jun 1925Box 106 \ 1  scan0041
From CJ to Hs regarding 'India' Front Springs, confirming a preference for 20% stronger springs and that output should not be stopped.1st Jul 1925Box 106 \ 1  scan0042
Bumping tests for the 20 HP chassis front end.7th Jul 1925Box 106 \ 1  scan0043
Bump test for the 20 HP 'G' Series chassis, detailing conditions and breakages.1st Jul 1925Box 106 \ 1  scan0044
Component failures and test durations for steering columns, levers, springs, and frame members.25th Sep 1924Box 106 \ 1  scan0045
Component failures during testing, with accompanying diagrams and suggestions for improvements.1st Jul 1925Box 106 \ 1  scan0046
Failures of front and rear spring clips and 'D' type dashbrackets.3rd Jul 1925Box 106 \ 1  scan0047


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