| Description | Date | Identifier | |
| Design of a luggage grid and a rear apron for a car. | 14th Aug 1930 | Box 13 \ 6 06-page35 | |
| Revised design for a Type 4 luggage carrier and rear apron. | 1st Dec 1930 | Box 13 \ 6 06-page36 | |
| Design and fitting of a revised Type 4 luggage carrier and rear apron, noting an issue with the tail lamp position. | 31th Dec 1930 | Box 13 \ 6 06-page37 | |
| New dies and associated costs for a revised luggage carrier and rear apron on the Phantom II. | 2nd Jan 1931 | Box 13 \ 6 06-page38 | |
| Modifications to castings, production timelines, and the position of the rear lamp. | 5th Jan 1931 | Box 13 \ 6 06-page39 | |
| Revised Type 4 luggage grid and number plate placement. | 5th Jan 1931 | Box 13 \ 6 06-page40 | |
| Design and demand for the Phantom II revised type luggage carrier and rear apron. | 12th Jan 1931 | Box 13 \ 6 06-page41 | |
| Design of a revised luggage carrier for the Phantom II model, comparing it to American designs. | 19th Jan 1931 | Box 13 \ 6 06-page42 | |
| Design and market appeal of an American-style folding arm luggage carrier. | 22th Jan 1931 | Box 13 \ 6 06-page43 | |
| Advantages and disadvantages of a revised Phantom II luggage grid design. | 23th Jan 1931 | Box 13 \ 6 06-page44 | |
| Policy and technical challenges of supplying a rear apron for a revised Type 4 luggage grid. | 2nd Jun 1931 | Box 13 \ 6 06-page45 | |
| Standardisation of a rear apron and luggage grid for the Phantom II chassis, considering the placement of a spare wheel. | 10th Feb 1931 | Box 13 \ 6 06-page46 | |
| Follow-up communication regarding the delayed sample of a Phantom II rear apron and revised luggage grid. | 27th Feb 1931 | Box 13 \ 6 06-page47 | |
| Programme outlining the standards and future designs for wheel carriers and luggage grids on P.2 and 20/25 models. | 7th May 1931 | Box 13 \ 6 06-page48 | |
| Standards and recommendations for carrying spare wheels on various models. | 7th May 1931 | Box 13 \ 6 06-page49 | |
| The introduction of a new luggage grid and rear apron for the 40/50 HP model. | 16th May 1931 | Box 13 \ 6 06-page50 | |
| The completion of a car with a Phantom II luggage grid and a West Wittering design rear apron, to be sent for inspection. | 20th May 1931 | Box 13 \ 6 06-page51 | |
| P.II. luggage grid and a request for the car to be sent for inspection. | 28th May 1931 | Box 13 \ 6 06-page52 | |
| Arranging a car for testing at Brooklands in relation to a Phantom II luggage grid. | 30th May 1931 | Box 13 \ 6 06-page53 | |
| Seeking sales approval for the design of an improved luggage grid and rear apron. | 11th Jun 1931 | Box 13 \ 6 06-page54 | |
| Approval, design, and fitting of an improved luggage grid and rear apron for various car chassis. | 13th Jun 1931 | Box 13 \ 6 06-page55 | |
| Technical memorandum detailing criticisms and proposed modifications for a new type of luggage grid. | 17th Jun 1931 | Box 13 \ 6 06-page56 | |
| Critique of a new luggage grid, covering fitting, fixing method, and handle design. | 17th Jun 1931 | Box 13 \ 6 06-page57 | |
| Design details for a new Type 4 luggage grid, scheme 3032. | 23th Jun 1931 | Box 13 \ 6 06-page58 | |
| Recommendations and alterations for a new type of luggage grid. | 24th Jun 1931 | Box 13 \ 6 06-page59 | |
| Request to produce a set of prototype metal luggage grid handles for approval before manufacturing the final version in Bakelite. | 30th Jun 1931 | Box 13 \ 6 06-page60 | |
| Standardisation document for an improved luggage grid. | 16th Jun 1931 | Box 13 \ 6 06-page61 | |
| Preliminary scheme for luggage carriers on Phantom II and 20/25 models. | 22th Dec 1933 | Box 13 \ 6 06-page62 | |
| Arrangements for an improved luggage carrier for the Phantom II and 20/25 models. | 28th Dec 1933 | Box 13 \ 6 06-page63 | |
| From R. to Hs. about completing a Phantom car following a telephone message, with a note on clutch trouble. | 29th May 1926 | Box 13 \ 7 07-page001 | |
| Issues with an experimental 12-EX clutch, its design, and potential material solutions. | 31th May 1926 | Box 13 \ 7 07-page002 | |
| Potential modifications to the clutch to reduce its moment of inertia. | 10th Jun 1926 | Box 13 \ 7 07-page003 | |
| Proposal from Mr. Royce to use Kelmit metal bushes to prevent squeaking in the Phantom clutch lever fulcrums. | 1st Jul 1926 | Box 13 \ 7 07-page004 | |
| On a lightened flywheel and clutch fitted to vehicle 12 EX, detailing an experiment, fabric dimensions, and test results. | 26th Jun 1926 | Box 13 \ 7 07-page005 | |
| Investigation into vibration issues on the 12-EX model. | 1st Oct 1926 | Box 13 \ 7 07-page006 | |
| Testing a new serrated drive on the Phantom clutch coupling shaft. | 1st Oct 1926 | Box 13 \ 7 07-page007 | |
| Sending new schemes for a gearbox and clutch casing, detailing modifications. | 25th Nov 1927 | Box 13 \ 7 07-page008 | |
| Blueprint LeC.2520 for a Slipper Flywheel with a disc drive. | 6th Mar 1928 | Box 13 \ 7 07-page009 | |
| Standardisation of cotton duck washers for the slipping wheel in conjunction with lighter springs. | 30th Mar 1928 | Box 13 \ 7 07-page010 | |
| Questionnaire about fitting a new part to a chassis, including test dates and costs. | 16th May 1928 | Box 13 \ 7 07-page011 | |
| Modifications to the clutch thrust to make it oil retaining for the centralised chassis lubrication system. | 16th May 1928 | Box 13 \ 7 07-page012 | |
| Request to machine two flywheels as per an attached sketch to fit a 12-EX car for crankshaft testing. | 8th May 1928 | Box 13 \ 7 07-page013 | |
| The cause of unevenness in a starter gear due to a burr on the flywheel ring. | 22th May 1928 | Box 13 \ 7 07-page014 | |
| Centralised chassis lubrication for the front brake differential shaft, pedals, and clutch operating shaft. | 26th May 1928 | Box 13 \ 7 07-page015 | |
| Letter to Rolls Royce of America regarding the necessity of drilling holes in a clutch driving piece. | 3rd Jul 1928 | Box 13 \ 7 07-page016 | |
| Standardisation of chassis parts concerning the flywheel, light type clutch, serrated drive and larger clutch stop. | 24th Mar 1928 | Box 13 \ 7 07-page017 | |
| Chassis number, test date, and costs for fitting a new part. | 12th Nov 1928 | Box 13 \ 7 07-page018 | |
| Performance issue with a lightened clutch and flywheel, specifically a rusted ball race preventing proper disengagement. | 1st Oct 1928 | Box 13 \ 7 07-page019 | |
| Modifications for a lightened clutch, flywheel, and serrated universal joint. | 10th Oct 1928 | Box 13 \ 7 07-page020 | |
| Fitting a stainless steel plug to a lightened clutch and flywheel on car 12-EX before it goes to France. | 17th Oct 1928 | Box 13 \ 7 07-page021 | |
| Excessive oil in the 'SS' clutch with recommendations for modification. | 23th Nov 1928 | Box 13 \ 7 07-page022 | |
| Blueprint showing a cross-section of a mechanical assembly with an annotation for a modification. | 29th Nov 1928 | Box 13 \ 7 07-page023 | |
| Agreeing to the proposed increase in the height of a lip. | 29th Nov 1928 | Box 13 \ 7 07-page024 | |
| Progress report on a 10,000-mile test for the 'SS' model, concerning starter motor adjustments and a clutch fault investigation. | 21th Dec 1928 | Box 13 \ 7 07-page025 | |
| Suggestions for freeing the 'SS' clutch plates, deferring work until comments are received. | 29th Dec 1928 | Box 13 \ 7 07-page026 | |
| Clutch stop and control for the 'SS' Chassis, comparing it to other models. | 1st Jan 1929 | Box 13 \ 7 07-page027 | |
| Erratic behavior in 'SS' clutches due to lubrication difficulties. | 14th Jan 1929 | Box 13 \ 7 07-page028 | |
| Two proposals for improving the S.S. Clutch arrangement. | 17th Jan 1929 | Box 13 \ 7 07-page029 | |
| Design suggestions for the 'SS' clutch, focusing on bearing races and proportions. | 15th Feb 1929 | Box 13 \ 7 07-page030 | |
| Proposal for modification to a serrated universal joint and clutch shaft. | 19th Feb 1929 | Box 13 \ 7 07-page031 | |
| The improved slipper flywheel and spring drive. | 26th Jul 1929 | Box 13 \ 7 07-page032 | |
| Extract discussing the operation of the clutch brake on an S.S. Chassis. | 1st Aug 1929 | Box 13 \ 7 07-page033 | |
| Extract concerning modifications needed for the slipper flywheel clearance on an S.S. Chassis. | 8th Aug 1929 | Box 13 \ 7 07-page034 | |
| Failed modification to a 20 HP thrust bearing and the dispatch of a new nozzle. | 20th Aug 1929 | Box 13 \ 7 07-page035 | |
| Request for a report on the 20 HP gearbox freewheel and a discussion on potential clutch and flywheel design improvements. | 24th Aug 1929 | Box 13 \ 7 07-page036 | |
| The wear on trunnion shafts for the S.S. Clutch Control and its suitability for the new 20 HP car. | 27th Sep 1929 | Box 13 \ 7 07-page037 | |
| Modification to the Phantom II clutch, specifically the Ferodo riveting and damper plate adjustment. | 15th Oct 1929 | Box 13 \ 7 07-page038 | |
| Commencement of rust on Phantom II flywheel and clutch parts due to damp weather. | 26th Oct 1929 | Box 13 \ 7 07-page039 | |
| Modifications to the Phantom II clutch, including a proposal from Mr. Royce to use ferodo on the inner member. | 6th Nov 1929 | Box 13 \ 7 07-page040 | |
| New scheme for lubricating the Phantom II clutch spigot bearing. | 6th Nov 1929 | Box 13 \ 7 07-page041 | |
| Testing a modified clutch lubrication scheme for the Phantom II, which is now becoming standard. | 20th Nov 1929 | Box 13 \ 7 07-page042 | |
| Specifications for a spring behind a carrier plate on a 20-EX model. | 11th Mar 1930 | Box 13 \ 7 07-page043 | |
| Trial of two new damper springs for the Phantom II clutch. | 11th Mar 1930 | Box 13 \ 7 07-page044 | |
| Material selection for the Phantom II experimental clutch pressure plates. | 17th Mar 1930 | Box 13 \ 7 07-page045 | |
| Request to obtain three pairs of woven clutch discs and the return of a sample. | 21th Mar 1930 | Box 13 \ 7 07-page046 | |
| Alterations to the friction clutches for 45 HP & 25 HP cars, particularly for the American market. | 10th Jul 1930 | Box 13 \ 7 07-page047 | |
| Modifications to the Phantom II clutch in relation to a proposal to fit Ferodo discs. | 15th Jul 1930 | Box 13 \ 7 07-page048 | |
| Cracked cast iron clutch pressure plate from a Phantom II car. | 23th Jul 1930 | Box 13 \ 7 07-page049 | |
| Blueprint of a front C.I. pressure plate showing crack formations after failure. | 29th Jul 1930 | Box 13 \ 7 07-page050 | |
| Standardisation of chassis parts regarding the automatic oiling of the clutch spigot bearing from the gearbox. | 5th Jun 1930 | Box 13 \ 7 07-page051 | |
| Instruction regarding the clutch assembly for the first 50 N.2 series chassis. | 28th Aug 1930 | Box 13 \ 7 07-page052 | |
| 40/50 clutch tests comparing the resistance to 'burning out' of different clutch linings under destructive conditions. | 30th Mar 1930 | Box 13 \ 7 07-page053 | |
| Continued memorandum discussing clutch troubles and spring inter-leaving materials, referencing American experiences. | 23th Aug 1930 | Box 13 \ 7 07-page054 | |
| Proposing a test on a Phantom clutch with new fabrics to investigate failures. | 23th Aug 1930 | Box 13 \ 7 07-page055 | |
| Destructive tests comparing the resistance to 'burning out' of a fabric-on-driven-plate clutch versus a standard clutch. | 30th Aug 1930 | Box 13 \ 7 07-page056 | |
| Spring inter-leaving material and the surprising performance of the standard clutch by American counterparts. | 31th Mar 1930 | Box 13 \ 7 07-page057 | |
| Modification to Phantom clutches involving an oil catcher to prevent lubricant from damaging the clutch fabric. | 1st Sep 1930 | Box 13 \ 7 07-page058 | |
| Further tests conducted on Standard Phantom Clutch fabrics. | 9th Sep 1930 | Box 13 \ 7 07-page059 | |
| Problems with the Phantom II left-hand chassis following a 10,000-mile endurance test. | 9th Sep 1930 | Box 13 \ 7 07-page060 | |
| Modifications for the clutch, carburetter, and brakes on experimental car models. | 10th Sep 1930 | Box 13 \ 7 07-page061 | |
| Phantom clutch failures and proposed improvements with new Ferodo material and extra rivets. | 10th Sep 1930 | Box 13 \ 7 07-page062 | |
| Ongoing clutch development issues, including problems with pressure plates, splines, and cross binding. | 11th Oct 1931 | Box 13 \ 7 07-page063 | |
| Phantom Clutch fabrics from supplier Ferodo, questioning why the company was not informed of improved materials. | 11th Sep 1930 | Box 13 \ 7 07-page064 | |
| The Phantom Clutch, questioning why supplier Ferodo did not inform the company of an improved clutch fabric. | 12th Sep 1930 | Box 13 \ 7 07-page065 | |
| Confirming verbal instructions for fitting clutches to car 23-EX and a test bed engine. | 15th Aug 1930 | Box 13 \ 7 07-page066 | |
| Comparison between two clutch types for the Phantom model, recommending to stay with the current design. | 15th Sep 1930 | Box 13 \ 7 07-page067 | |
| Clutch faults with a cast iron back plate and performance testing of a standard clutch. | 15th Sep 1930 | Box 13 \ 7 07-page068 | |
| Decision not to change the Phantom's clutch material and the need to clearly communicate this to the American company. | 16th Sep 1930 | Box 13 \ 7 07-page069 | |
| Cancellation of a standardisation sheet for Phantom Clutches based on test results. | 17th Sep 1930 | Box 13 \ 7 07-page070 | |
| Standardisation of chassis parts for the supporting stay to the clutch pedal shaft. | 6th Jun 1930 | Box 13 \ 7 07-page071 | |
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