| Description | Date | Identifier | |
| Standardisation sheet discussing the retention or deletion of 11 items from an original kit based on various opinions. | 12th Jun 1930 | Box 16 \ 6 Scan031 | |
| The reduction of tools in kits for the 'Phantom II' and 20/25 HP models. | 26th Jun 1930 | Box 16 \ 6 Scan032 | |
| Typed table showing a 'Yes/No' breakdown for eleven numbered items across various abbreviated criteria, with a final 'Majority' column. | 3rd Jul 1930 | Box 16 \ 6 Scan033 | |
| The trial of an American tool for detaching top valve spring washers, outlining its performance and drawbacks. | 3rd Jul 1930 | Box 16 \ 6 Scan034 | |
| Proposed reduction of the standard vehicle tool kit. | 4th Jul 1930 | Box 16 \ 6 Scan035 | |
| Proposal to reduce the tool kits by not supplying tools for dismantling hubs, pivots, or roughening brake-shoes. | 7th Jul 1930 | Box 16 \ 6 Scan036 | |
| Confirming an agreement on the reduction of tools in a standardised tool kit, noting two specific exceptions. | 25th Jul 1930 | Box 16 \ 6 Scan037 | |
| Standardisation of chassis parts for a revised tool kit for the Phantom II & 20/25 HP. | 12th Jun 1930 | Box 16 \ 6 Scan038 | |
| Reducing the tools supplied with the Phantom II and 25 HP chassis tool kits. | 12th Jun 1930 | Box 16 \ 6 Scan039 | |
| List of various automotive spare parts and tools. | 12th Jun 1930 | Box 16 \ 6 Scan040 | |
| Confirming the standardisation of tool kits with an agreed exception for specific spanners. | 26th Jul 1930 | Box 16 \ 6 Scan041 | |
| Proposal to fit a standardized tool box into the frame of imported Phantom II cars. | 15th Jan 1931 | Box 16 \ 6 Scan042 | |
| Design and contents of a toolbox to be located under the front seat. | 22th Jan 1931 | Box 16 \ 6 Scan043 | |
| Present practice and alternative locations for tool accommodation in a vehicle. | 2nd Mar 1931 | Box 16 \ 6 Scan044 | |
| Optimal placement of two classes of tool boxes for accessibility and weight distribution. | 14th Feb 1931 | Box 16 \ 6 Scan045 | |
| Urgent request for a detailed cost statement of tools and spares for the 20/25 HP and Phantom II cars. | 11th Jan 1932 | Box 16 \ 6 Scan046 | |
| Reduction of costs for car tool kits by inquiring about prices from specialist firms. | 11th Jan 1932 | Box 16 \ 6 Scan047 | |
| Request for comparative pricing on spanners, with and without the Rolls Royce name. | 1st Jan 1932 | Box 16 \ 6 Scan048 | |
| Enquiries for the supply of Spanners and various Tool Kit details. | 15th Jan 1932 | Box 16 \ 6 Scan049 | |
| Proposed changes and economies for car tool and spares equipment. | 27th Jan 1932 | Box 16 \ 6 Scan050 | |
| Deletion of chassis spares and tools for economy measures on the 20/25HP and 40/50HP models. | 1st Feb 1932 | Box 16 \ 6 Scan051 | |
| Switch from single-ended to double-ended spanners for car tool kits, including part numbers and cost savings. | 3rd Feb 1932 | Box 16 \ 6 Scan052 | |
| Confirming the decision to adopt double-ended jaw spanners for car tool kits once the stock of single-ended spanners is exhausted. | 5th Feb 1932 | Box 16 \ 6 Scan053 | |
| Arrangements for double-ended jaw spanners to be adopted for 20/25 HP and 40/50 chassis. | 9th Feb 1932 | Box 16 \ 6 Scan054 | |
| Merits of single-ended versus double-ended spanners for car tool kits. | 13th Feb 1932 | Box 16 \ 6 Scan055 | |
| Contents and cost of the chassis tool kit, particularly regarding single-ended spanners. | 19th Feb 1932 | Box 16 \ 6 Scan056 | |
| The quantity of single-ended spanners in the 20/25 chassis tool kit. | 22th Feb 1932 | Box 16 \ 6 Scan057 | |
| Conveying R's agreement to using double-ended spanners for economy, with a personal preference for single-ended ones. | 30th Mar 1932 | Box 16 \ 6 Scan058 | |
| Standardisation of chassis parts, with the reversion to double-ended jaw spanners for car tool kits. | 6th Feb 1932 | Box 16 \ 6 Scan059 | |
| Introduction of a new part to the 'U' Series chassis. | 10th Apr 1932 | Box 16 \ 6 Scan060 | |
| Comparing the cost of currently used pliers with a cheaper alternative offered by Peter Stubs Limited. | 22th Jun 1932 | Box 16 \ 6 Scan061 | |
| Rejection of sample pliers submitted by Peter Stubbs Ltd. for inclusion in car kits. | 23th Jun 1932 | Box 16 \ 6 Scan062 | |
| Requesting an investigation into the inadequacy of the double-ended spanner provided in the tool kit for tappet adjustment. | 8th Aug 1932 | Box 16 \ 6 Scan063 | |
| Inclusion of a double-ended spanner in the tool kit for adjusting tappets. | 9th Aug 1932 | Box 16 \ 6 Scan064 | |
| Instruction to standardise the method of carrying road tools under the bonnet for the 40/50 HP Chassis. | 13th Jul 1933 | Box 16 \ 6 Scan065 | |
| Alternative locations for tool storage to avoid placing them under the bonnet on various car models. | 6th Feb 1934 | Box 16 \ 6 Scan066 | |
| Rear anchorage of front springs and an associated schematic N.Sch.2091. | 27th Nov 1925 | Box 16 \ 7 Scan001 | |
| Design suggestions for the rear spring front anchorage, awaiting Mr. Royce's feedback. | 17th Feb 1926 | Box 16 \ 7 Scan002 | |
| Alternative rear spring design, comparing it to the existing 20 HP scheme. | 26th Feb 1926 | Box 16 \ 7 Scan003 | |
| Design of rear springs for the EAC.7 frame, concerning top plate thickness and spring clips. | 13th Mar 1926 | Box 16 \ 7 Scan004 | |
| Modifications to the front anchorage of rear springs. | 14th Apr 1926 | Box 16 \ 7 Scan005 | |
| Urgent ordering of semi-elliptic rear springs with accompanying blueprints. | 21th Apr 1926 | Box 16 \ 7 Scan006 | |
| Recommendation to order twelve rear springs of varying weight capacities. | 1st Apr 1926 | Box 16 \ 7 Scan007 | |
| Vehicle's performance with suggestions for improvements to steering, suspension, and engine components. | 26th Jun 1926 | Box 16 \ 7 Scan008 | |
| Requesting a pair of stronger rear springs for the 12-EX car. | 9th Aug 1926 | Box 16 \ 7 Scan009 | |
| Project status of a chassis, listing components with existing instructions and those still awaited. | 20th Aug 1926 | Box 16 \ 7 Scan010 | |
| Continued note on getting a chassis on the road, highlighting the sequence starter as the most difficult part to arrange. | 24th Sep 1926 | Box 16 \ 7 Scan011 | |
| Standardisation document for the rear road spring roller and plate. | 24th Sep 1926 | Box 16 \ 7 Scan012 | |
| Design improvements for the rear cross tube, dumb-irons, and luggage grid. | 23th Jan 1927 | Box 16 \ 7 Scan013 | |
| Steering trouble on the EAC-Vll chassis and requesting an investigation into fitting alternative front springs. | 1st Feb 1927 | Box 16 \ 7 Scan014 | |
| Modifications for fitting Phantom unequal centred springs to an E.A.C.7. chassis. | 10th Feb 1927 | Box 16 \ 7 Scan015 | |
| Testing chassis 12-EX with altered road springs and hydraulic shock dampers for Australian conditions. | 26th May 1927 | Box 16 \ 7 Scan016 | |
| Continued discussion on the requirement for adjustable friction springs due to the varying conditions in Australia versus Europe. | 1st Aug 1927 | Box 16 \ 7 Scan017 | |
| A miscalculation in rear spring requirements for EAC-7 and requesting new ones. | 1st Aug 1927 | Box 16 \ 7 Scan018 | |
| Order for a new set of rear road springs for a chassis as the previous set was too light. | 17th Aug 1927 | Box 16 \ 7 Scan019 | |
| Urgent internal memo requesting the return of specific springs to the makers for conversion to different specifications. | 23th Aug 1927 | Box 16 \ 7 Scan020 | |
| Comparing the rear springing of the EAC.7 model with an equivalent Phantom. | 3rd Sep 1927 | Box 16 \ 7 Scan021 | |
| Letter discussing F Engine performance for Fairey and developments for the Phantom Sports chassis. | 10th Oct 1927 | Box 16 \ 7 Scan022 | |
| Comparative suspension tests for 40/50 HP models, comparing semi-elliptic and cantilever springs. | 11th Nov 1927 | Box 16 \ 7 Scan023 | |
| Testing hydraulics with increased viscosity for improved ride damping on experimental cars. | 4th Nov 1927 | Box 16 \ 7 Scan024 | |
| Urgent internal memo requesting an order for modified front springs for Mr. Royce's personal car. | 4th Nov 1927 | Box 16 \ 7 Scan025 | |
| Urgent order for modified front road springs with altered cambers for Mr. Royce's car. | 7th Nov 1927 | Box 16 \ 7 Scan026 | |
| Changes to the 14-EX coachbuilders drawings regarding axle clearance, spring stiffness and buffer size. | 14th Nov 1927 | Box 16 \ 7 Scan027 | |
| Tests conducted on hydraulic shock dampers to improve car riding, comfort, and stability. | 16th Nov 1927 | Box 16 \ 7 Scan028 | |
| Shock damper tests, discussing axle velocity, pressure, and ride comfort on vehicles 12-EX and 14-EX. | 16th Nov 1927 | Box 16 \ 7 Scan029 | |
| Comparison of suspension performance on the 14-EX experimental car versus the standard 40/50 HP. | 16th Nov 1927 | Box 16 \ 7 Scan030 | |
| Report comparing the ride quality of the 14-EX car with standard versus higher pressure shock dampers. | 16th Nov 1927 | Box 16 \ 7 Scan031 | |
| Graph and cross-sectional diagrams analyzing damper performance and piston components. | 16th Nov 1927 | Box 16 \ 7 Scan032 | |
| Blank document page marked with a Print Room date stamp. | 16th Nov 1927 | Box 16 \ 7 Scan033 | |
| Series of four graphs analysing oil pressure, velocity, viscosity, and temperature under different conditions. | 16th Nov 1927 | Box 16 \ 7 Scan034 | |
| Heavily faded document with two punch holes and a red date stamp in the bottom right corner. | 16th Nov 1927 | Box 16 \ 7 Scan035 | |
| Instructions on lowering the chassis for 20 HP and Phantom models by reducing packing. | 17th Nov 1927 | Box 16 \ 7 Scan036 | |
| Instructions for altering the 40/50 rear springs to lower the rear of the car. | 1st Dec 1927 | Box 16 \ 7 Scan037 | |
| Order for modified front road springs for a Phantom E.A.C.8. chassis. | 16th Dec 1927 | Box 16 \ 7 Scan038 | |
| Specifying modified front road springs for a Phantom Chassis E.A.C.8. | 21th Dec 1927 | Box 16 \ 7 Scan039 | |
| Diagram showing the clip positions for special 1050 lbs front springs. | 31th Dec 1927 | Box 16 \ 7 Scan040 | |
| Vehicle performance, detailing misfire solutions, handling improvements, and comments on standardized versus coachbuilt parts. | 31th Dec 1927 | Box 16 \ 7 Scan041 | |
| Performance of a sequence starter compared to existing models. | 3rd Jan 1928 | Box 16 \ 7 Scan042 | |
| Requesting an order for different front springs for Mr. Royce's car because the original specification was too light. | 3rd Jan 1928 | Box 16 \ 7 Scan043 | |
| Design features and proposed alterations for a vehicle, including the radiator and engine suspension. | 1st Sep 1928 | Box 16 \ 7 Scan044 | |
| Vehicle modifications including throttle cooling, suspension, induction pipe, and body suggestions. | 28th Jan 1928 | Box 16 \ 7 Scan045 | |
| Specifications and expected weight reduction for sports car rear springs. | 28th Jan 1928 | Box 16 \ 7 Scan046 | |
| Need for a 40 lbs weight reduction on sports car rear springs and issues with suppliers. | 14th Nov 1927 | Box 16 \ 7 Scan047 | |
| The front anchorage of rear springs and brake carrier levers. | 31th Jan 1928 | Box 16 \ 7 Scan048 | |
| Urgent internal memo requesting an order for modified front road springs for Mr. Royce's car. | 6th Feb 1928 | Box 16 \ 7 Scan049 | |
| Order for modified front road springs with altered cambers for an E.A.C.7 chassis, noted as urgent for Mr. Royce's car. | 17th Feb 1928 | Box 16 \ 7 Scan050 | |
| The production of three different pairs of special road springs for the Phantom model. | 1st Mar 1928 | Box 16 \ 7 Scan051 | |
| Delivery and fitting of two sets of special rear springs for a Sports car. | 16th Mar 1928 | Box 16 \ 7 Scan052 | |
| Layout of the 'SS' side steering tube, referencing drawing N.sch.2567. | 26th Mar 1928 | Box 16 \ 7 Scan053 | |
| Specification sheet detailing buffer clearance, wing clearance, and spring camber measurements for the 14-EX model. | 27th Mar 1928 | Box 16 \ 7 Scan054 | |
| Weakness of the 50 lbs forward body support spring and requesting a modification. | 27th Mar 1928 | Box 16 \ 7 Scan055 | |
| Central oiling for the front anchorage of the rear spring. | 14th Apr 1928 | Box 16 \ 7 Scan056 | |
| The application of centralised chassis lubrication to the front spring shackle. | 18th Apr 1928 | Box 16 \ 7 Scan057 | |
| Provision of a blueprint for the F.78792 front road spring for the E.A.C.10 chassis. | 20th Apr 1928 | Box 16 \ 7 Scan058 | |
| Broken front spring plates on car 14-EX causing frequent bumping. | 1st May 1928 | Box 16 \ 7 Scan059 | |
| The comparative testing of road springs from Firths versus American manufacturers, detailing premature failures. | 28th May 1928 | Box 16 \ 7 Scan060 | |
| Effectiveness and testing of different rear spring types for various car models. | 15th May 1928 | Box 16 \ 7 Scan061 | |
| Ordering road springs and poundages for experimental vehicles India 3 and EAC10. | 15th May 1928 | Box 16 \ 7 Scan062 | |
| Confidential internal memo discussing Prince Ibrahim's dissatisfaction with a car's high-speed performance, handling, and springing. | 16th May 1928 | Box 16 \ 7 Scan063 | |
| On replacing a serrated roller with a sliding block on the Phantom model, per scheme 2598. | 16th May 1928 | Box 16 \ 7 Scan064 | |
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