| Description | Date | Identifier | |
| Secret memo discussing the fitting and modification of a rear wheel and luggage carrier for Phantom and Silver Ghost chassis. | 2nd Oct 1926 | Box 67 \ 2 scan0070 | |
| Revised design of a 40/50 Luggage Grid for the Phantom. | 28th Oct 1926 | Box 67 \ 2 scan0071 | |
| Request to fit a spare wheel and luggage carrier to Mr. Royce's car, 7-EX. | 19th Nov 1926 | Box 67 \ 2 scan0072 | |
| Proposing modifications to the 7-EX car, specifically the fitting of a rear spare wheel carrier, and asking for decisions on the final configuration. | 26th Nov 1926 | Box 67 \ 2 scan0073 | |
| Clarifying a request to enamel the luggage grid and spare wheel carrier on car 7-EX due to finishing time constraints. | 4th Dec 1926 | Box 67 \ 2 scan0074 | |
| Standardisation of a rear-mounted wheel and luggage carrier for the Phantom 7-EX model. | 18th Dec 1926 | Box 67 \ 2 scan0075 | |
| Standardisation of fitting the spare wheel and luggage grid at the rear of the Phantom model. | 24th Dec 1926 | Box 67 \ 2 scan0076 | |
| The standardization of the rear wheel and luggage carrier for the Phantom model. | 8th Jan 1927 | Box 67 \ 2 scan0077 | |
| Design, cost, and supply options for rear wheel carriers on the 40/50 HP model. | 24th Dec 1926 | Box 67 \ 2 scan0078 | |
| Alterations to the spare wheel carrier and luggage arrangement at the rear of a vehicle. | 17th Jan 1927 | Box 67 \ 2 scan0079 | |
| Follow-up memo requesting a signature on a standardisation sheet for a rear wheel and luggage grid. | 1st Feb 1927 | Box 67 \ 2 scan0080 | |
| Standardization of a new rear frame design to accommodate a spare wheel and new luggage grid. | 22th Feb 1927 | Box 67 \ 2 scan0081 | |
| Costs and policy for a new Phantom combined luggage grid and spare wheel carrier arrangement. | 25th Feb 1927 | Box 67 \ 2 scan0082 | |
| Clarifying the cost breakdown for a combined luggage grid and wheel carrier. | 25th Feb 1927 | Box 67 \ 2 scan0083 | |
| Modifications to a Phantom's combined wheel and luggage carrier. | 28th Feb 1927 | Box 67 \ 2 scan0084 | |
| Design issues and improvements for spare wheel carriers, luggage carriers, and step irons. | 3rd Mar 1927 | Box 67 \ 2 scan0085 | |
| Breaking down the costs for a combined luggage grid and wheel carrier for a 40/50 HP chassis. | 9th Mar 1927 | Box 67 \ 2 scan0086 | |
| Cost estimation memorandum for the Phantom Combined Luggage Grid and Spare Wheel Carrier. | 4th Mar 1927 | Box 67 \ 2 scan0087 | |
| Standardisation sheet for the Phantom rear wheel and grid be signed to avoid future production issues. | 24th Mar 1927 | Box 67 \ 2 scan0088 | |
| Standardisation sheet memo regarding the Phantom rear wheel and grid. | 28th Mar 1927 | Box 67 \ 2 scan0089 | |
| Procurement of a custom luggage box from Vitton's in Paris for a Phantom vehicle. | 29th Mar 1927 | Box 67 \ 2 scan0090 | |
| Requesting information to create a preliminary layout for a luggage box and wheel carrier for a Phantom model. | 1st Apr 1927 | Box 67 \ 2 scan0091 | |
| Modification for the rear wheel carrier and luggage grid to address a defect. | 27th Apr 1927 | Box 67 \ 2 scan0092 | |
| The riding qualities of the Phantom & 20 HP, focusing on the rear luggage box and spare wheel. | 29th Apr 1927 | Box 67 \ 2 scan0093 | |
| The production of specific parts for a rear spare wheel carrier. | 10th May 1927 | Box 67 \ 2 scan0094 | |
| Design modifications to the Phantom luggage carrier forgings, with an illustrative sketch. | 24th May 1927 | Box 67 \ 2 scan0095 | |
| The standardisation of the Phantom rear wheel and luggage carrier. | 31th May 1927 | Box 67 \ 2 scan0096 | |
| Standardisation of chassis parts for the wheel at rear and luggage grid. | 24th Dec 1926 | Box 67 \ 2 scan0097 | |
| The standardisation of coachwork features, with an agreement and conditions. | 1st Jun 1927 | Box 67 \ 2 scan0098 | |
| Impact of weight distribution on car riding qualities and providing recommendations. | 1st Jun 1927 | Box 67 \ 2 scan0099 | |
| Progress on the development of a new side-mounted spare wheel carrier. | 15th Jul 1927 | Box 67 \ 2 scan0100 | |
| Test results for a spare wheel carrier and luggage grid. | 21th Jul 1927 | Box 67 \ 2 scan0101 | |
| Difficulty with a Phantom wheel carrier and a request for fractured parts. | 23th Jul 1927 | Box 67 \ 2 scan0102 | |
| Inquiry regarding the original testing weights for 40/50 HP Luggage Grids. | 27th Jul 1927 | Box 67 \ 2 scan0103 | |
| Note on the load tests carried on a luggage grid, detailing minimum and maximum weights. | 27th Jul 1924 | Box 67 \ 2 scan0104 | |
| The results of a load test on the 40/50 HP luggage grid. | 1st Aug 1927 | Box 67 \ 2 scan0105 | |
| Failure of spare wheel carrier clips and the design challenges of ensuring its rigidity. | 10th Aug 1927 | Box 67 \ 2 scan0106 | |
| Design changes for the Phantom luggage grid and spare wheel carrier. | 11th Aug 1927 | Box 67 \ 2 scan0107 | |
| Supply and configuration of the Phantom rear wheel and luggage carrier. | 17th Aug 1927 | Box 67 \ 2 scan0108 | |
| Experiments on a Phantom combined spare wheel carrier and luggage grid. | 20th Aug 1927 | Box 67 \ 2 scan0109 | |
| The design and modification of a Phantom rear wheel and luggage carrier. | 27th Aug 1927 | Box 67 \ 2 scan0110 | |
| Finalisation and trial of the Phantom rear wheel and luggage carrier. | 6th Sep 1927 | Box 67 \ 2 scan0111 | |
| Modifications and standardization for the Phantom rear wheel and luggage carrier. | 28th Sep 1927 | Box 67 \ 2 scan0112 | |
| Fractured carrier plate on a Phantom rear wheel and luggage carrier after testing. | 3rd Oct 1927 | Box 67 \ 2 scan0113 | |
| The supply of spare wheel carriers and luggage grids be included in the chassis price or as a standard extra. | 6th Oct 1927 | Box 67 \ 2 scan0114 | |
| Policy for the rear spare wheel carrier and luggage grid for the Phantom model. | 7th Oct 1927 | Box 67 \ 2 scan0115 | |
| Design challenges and commercial considerations for a rear spare wheel carrier, particularly its interaction with a luggage grid. | 11th Oct 1927 | Box 67 \ 2 scan0116 | |
| Diagram illustrating breakages on a Phantom luggage grid bumper chassis after load testing. | 17th Oct 1927 | Box 67 \ 2 scan0117 | |
| Speed gains from various aerodynamic body modifications. | 19th Oct 1927 | Box 67 \ 2 scan0118 | |
| Requesting the repair and strengthening of a broken luggage grid for further stress testing. | 19th Oct 1927 | Box 67 \ 2 scan0119 | |
| Blueprint for temporary strengthening pieces for a luggage grid to be welded or brazed to the main frame. | 22th Oct 1927 | Box 67 \ 2 scan0120 | |
| New Phantom rear wheel carrier designed to be fitted when a luggage grid is not required. | 22th Oct 1927 | Box 67 \ 2 scan0121 | |
| Letter from coachbuilder Thrupp & Maberly thanking W. A. Robotham for a prompt reply and an accompanying photograph. | 16th Nov 1927 | Box 67 \ 2 scan0122 | |
| Test report on a re-brazed bumper chassis luggage grid showing failure points under load. | 15th Nov 1927 | Box 67 \ 2 scan0123 | |
| Letter from coachbuilder Thrupp & Maberly requesting details of a luggage grid seen at the Paris Salon. | 14th Nov 1927 | Box 67 \ 2 scan0124 | |
| The results of destructive testing on a Phantom luggage grid and suggesting reinforcements. | 15th Nov 1927 | Box 67 \ 2 scan0125 | |
| Diagram illustrating a luggage grip failure analysis with handwritten notes. | 15th Nov 1927 | Box 67 \ 2 scan0126 | |
| Letter to coachbuilder Thrupp & Maberly Ltd. regarding the luggage grid on a La Salle car. | 15th Nov 1927 | Box 67 \ 2 scan0127 | |
| Rattling spare wheel carrier and proposing a clip with a rubber pad as a solution. | 16th Nov 1927 | Box 67 \ 2 scan0128 | |
| The design update of the Phantom luggage grid. | 24th Nov 1927 | Box 67 \ 2 scan0129 | |
| Requesting to trial a luggage grid on a 40/50 HP bumper chassis. | 28th Nov 1927 | Box 67 \ 2 scan0130 | |
| The Phantom wheel carrier and luggage grid. | 28th Nov 1927 | Box 67 \ 2 scan0131 | |
| Technical memo discussing the strengthening and vibration issues of the Phantom luggage grid. | 12th Mar 1928 | Box 67 \ 2 scan0132 | |
| Blueprint detailing a failure analysis on a luggage grid component. | 13th Mar 1928 | Box 67 \ 2 scan0133 | |
| Elusive knock and improvements related to the Phantom spare wheel carrier. | 13th Mar 1928 | Box 67 \ 2 scan0134 | |
| Confirming no objection to a modified Lodge C.150 sparking plug for the Phantom model after testing. | 29th Mar 1926 | Box 67 \ 2 scan0135 | |
| Obsolete pieces and potential weaknesses on a Phantom luggage grid. | 20th Apr 1928 | Box 67 \ 2 scan0136 | |
| Internal memorandum discussing improvements to the steering and front spring arrangement. | 19th Feb 1924 | Box 67 \ 2 scan0137 | |
| Steering speeds, comparing standard, Hispano, and a proposed modification. | 26th Jun 1924 | Box 67 \ 2 scan0138 | |
| Scheme for adapting double radius rods to the front axle control. | 26th Jun 1924 | Box 67 \ 2 scan0139 | |
| New scheme for adapting double radius rods to the front axle control and instructing the experimental department on testing procedures. | 26th Jun 1924 | Box 67 \ 2 scan0140 | |
| Secret memo regarding a modification to the front axle control to accommodate radius rods. | 24th Jul 1924 | Box 67 \ 2 scan0141 | |
| Potential improvements and issues with the steering and front spring arrangement. | 19th Feb 1924 | Box 67 \ 2 scan0142 | |
| The continuation of a memorandum concluding with an instruction to proceed with a suggested modification. | 24th Oct 1924 | Box 67 \ 2 scan0143 | |
| Secret memo requesting modifications for the E.A.C.11 axle control to commence testing. | 24th Oct 1924 | Box 67 \ 2 scan0144 | |
| Secret memo regarding the dispatch of proposed modification parts for axle control. | 27th Oct 1924 | Box 67 \ 2 scan0145 | |
| Secret memo discussing the modification of stub axle pivots to address issues arising from the fitting of front wheel brakes. | 10th Dec 1924 | Box 67 \ 2 scan0146 | |
| Experimental spring driven damped pendulum lever to improve steering and reduce wobbles. | 30th Apr 1925 | Box 67 \ 2 scan0147 | |
| Test results document for front axle torsion under braking forces on two different models. | 19th May 1925 | Box 67 \ 2 scan0148 | |
| Issues with the front axle brake levers on the 'India' model, which foul the axle under load. | 23th May 1925 | Box 67 \ 2 scan0149 | |
| Data table comparing load and movement specifications for 'INDIA' and 'E.A.C.' chassis types. | 23th May 1925 | Box 67 \ 2 scan0150 | |
| Request to increase the backward pivot lean on 98-NK by creating new tapered packing pieces. | 14th Jul 1925 | Box 67 \ 2 scan0151 | |
| From 'R' to 'Hs' suggesting modifications to an EAC chassis regarding springs and brakes for safety. | 22th Jun 1925 | Box 67 \ 2 scan0152 | |
| The reduction of front braking on the EAC by altering a lever on the front countershaft. | 24th Jun 1925 | Box 67 \ 2 scan0153 | |
| Ignition failure and brake issues, including servo vibration, on a New Phantom car. | 26th Jun 1925 | Box 67 \ 2 scan0154 | |
| Listing the weights of various axle configurations. | 26th Aug 1925 | Box 67 \ 2 scan0155 | |
| Layout and modifications for a hydraulic damper on a front axle. | 26th Aug 1925 | Box 67 \ 2 scan0156 | |
| Modifications to the steering system, including a slower ratio to address high-speed wobbles and criticism. | 3rd Sep 1925 | Box 67 \ 2 scan0157 | |
| Purchasing fittings, pendulum lever specifications, and developing a hydraulic shock damper. | 4th Sep 1925 | Box 67 \ 2 scan0158 | |
| Query regarding the design of a new lightweight front axle, focusing on the distance between the wheel contact point and the pivot. | 4th Sep 1925 | Box 67 \ 2 scan0159 | |
| Comparing front axles to investigate high-speed steering wobbles. | 12th Jun 1925 | Box 67 \ 2 scan0160 | |
| Axle wobble and king pin alterations. | 15th Sep 1925 | Box 67 \ 2 scan0161 | |
| Comparing the weights of front axle components. | 17th Sep 1925 | Box 67 \ 2 scan0162 | |
| Page comparing the weights of wheel and hub components for T.series Silver Ghost, New Phantom, and Hispano models. | 17th Sep 1925 | Box 67 \ 2 scan0163 | |
| The causes and characteristics of high-speed steering wobble. | 12th Jun 1925 | Box 67 \ 2 scan0164 | |
| The causes and characteristics of wheel wobble. | 12th Jun 1925 | Box 67 \ 2 scan0165 | |
| Analysing the causes of wheel wobble, tramp and the effect of toe-in/out. | 17th Jun 1925 | Box 67 \ 2 scan0166 | |
| The self-exciting nature of high-speed wheel wobble. | 18th Sep 1925 | Box 67 \ 2 scan0167 | |
| The causes of wheel wobble, focusing on gyroscopic effects and steering geometry. | 18th Sep 1925 | Box 67 \ 2 scan0168 | |
| Comparative weights of front axle hub components for the New Phantom. | 19th Sep 1925 | Box 67 \ 2 scan0169 | |
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