| Description | Date | Identifier | |
| Technical document detailing spring load requirements and washer specifications to eliminate high-speed wobbles. | 17th Nov 1928 | Box 12 \ 1 01-page104 | |
| Continued report page discussing pressure valves and dynamic restriction tests. | 17th Nov 1928 | Box 12 \ 1 01-page105 | |
| Graph plotting load versus deflection for spring F54807 under high and low pressure conditions. | 17th Nov 1928 | Box 12 \ 1 01-page106 | |
| Blueprint showing two cross-sectional views of a mechanical component with dimensional annotations. | 19th Nov 1928 | Box 12 \ 1 01-page107 | |
| Failures of the front axle control damper and correcting a previous communication. | 19th Nov 1928 | Box 12 \ 1 01-page108 | |
| Faint drawing of a frame or fuselage component. | 19th Nov 1928 | Box 12 \ 1 01-page109 | |
| Blueprint diagram illustrating a fracture on a lever near the Woodruff key. | 21th Nov 1928 | Box 12 \ 1 01-page110 | |
| Potential air pocket issues in an 'SS' Axle Control Damper design. | 21th Nov 1928 | Box 12 \ 1 01-page111 | |
| Request to modify the 'SS' Axle Control Damper drawing to prevent trapped air after the deletion of an air vent. | 24th Nov 1928 | Box 12 \ 1 01-page112 | |
| Recommendation to modify bonnet strips to allow for adjustment of the shock absorbers on the axle control damper. | 28th Nov 1928 | Box 12 \ 1 01-page113 | |
| Lubrication issues and load capacity for the 'SS' axle control arm. | 30th Nov 1928 | Box 12 \ 1 01-page114 | |
| Modifications and potential issues with the front axle control damper levers. | 1st Dec 1928 | Box 12 \ 1 01-page115 | |
| Instructions for fitting up the '33' axle control arm. | 1st Dec 1928 | Box 12 \ 1 01-page116 | |
| Mistake in the 'SS' Front Axle operating lever position and proposed modifications. | 12th Dec 1928 | Box 12 \ 1 01-page117 | |
| Lever specifications and stress failure analysis for a front axle control damper. | 7th Dec 1928 | Box 12 \ 1 01-page118 | |
| Note on altering the low pressure loads of 'SS' front axle control dampers by adding a washer. | 10th Dec 1928 | Box 12 \ 1 01-page119 | |
| On replacing 'fishback' section short levers on 'SS' Front Axle Control Dampers. | 11th Dec 1928 | Box 12 \ 1 01-page120 | |
| The removal of restriction discs from the front axle control dampers of vehicle 18-EX. | 13th Dec 1928 | Box 12 \ 1 01-page121 | |
| Proposed improved lubrication for the 'SS' front axle control damper. | 29th Jan 1929 | Box 12 \ 1 01-page122 | |
| Updates and proposals for the 'SS' chassis, covering lubrication, steering, and other components. | 6th Feb 1929 | Box 12 \ 1 01-page123 | |
| Theory on chassis stiffness, periodicity, and testing methods for 20 HP & SS chassis. | 4th Mar 1929 | Box 12 \ 1 01-page124 | |
| Technical note on the flexibility, resilience, and bouncing characteristics of smaller road wheels. | 18th Mar 1929 | Box 12 \ 1 01-page125 | |
| Copy of a telegram from Mr. Royce regarding an axle examination after ten thousand miles. | 18th Mar 1929 | Box 12 \ 1 01-page126 | |
| Design and performance of hydraulic dampers, focusing on valve and passage design. | 25th Mar 1929 | Box 12 \ 1 01-page127 | |
| Issues and design principles for hydraulic shock dampers. | 4th Apr 1929 | Box 12 \ 1 01-page128 | |
| Road testing issues with a 20 HP car, focusing on ineffective dampers, flexible springs, and body instability. | 17th Apr 1929 | Box 12 \ 1 01-page129 | |
| Remedies for a fouling issue with the 'SS' Cross Steering Tube. | 17th Apr 1929 | Box 12 \ 1 01-page130 | |
| The condition of chassis 18-EX after 18,000 miles of use. | 24th May 1929 | Box 12 \ 1 01-page131 | |
| Inspection report detailing the lubrication and wear condition of various vehicle component bearings. | 24th May 1929 | Box 12 \ 1 01-page132 | |
| Inspection report detailing the condition of bearings for various supplied units. | 24th May 1929 | Box 12 \ 1 01-page133 | |
| The condition of bearings for various supplied rear axle and brake units. | 25th May 1929 | Box 12 \ 1 01-page134 | |
| Design and sourcing of special Enots nipples for axle lubrication. | 25th May 1929 | Box 12 \ 1 01-page135 | |
| Proposal for centralised chassis lubrication for 40/50 and 20 HP models. | 8th Jun 1929 | Box 12 \ 1 01-page136 | |
| The lubrication of cross steering tube ball ends, suggesting a definite location to prevent oil loss. | 16th Aug 1929 | Box 12 \ 1 01-page137 | |
| Front axle control for the 20 HP model, comparing it against the 40/50 HP and Phantom models. | 12th Nov 1929 | Box 12 \ 1 01-page138 | |
| Tests on the 20 HP front axle, its effect on steering joggles, and future concerns for the 40/50 HP car. | 21th Nov 1929 | Box 12 \ 1 01-page139 | |
| The challenges of lowering the 20 HP car by altering the frame's front joggle. | 21th Nov 1929 | Box 12 \ 1 01-page140 | |
| Difficulties with Bijur lubrication of axles and recommending a new procedure. | 1st Jan 1930 | Box 12 \ 1 01-page141 | |
| Discussion document on improving the axle lubrication system using air-vessels and a one-shot chassis system. | 1st Jan 1930 | Box 12 \ 1 01-page142 | |
| Instructions for lubricating axles with an oil gun, recommending a new page for existing instruction books. | 1st Jan 1930 | Box 12 \ 1 01-page143 | |
| Clearance issues for the Excelsior Damper on the Phantom II front axle. | 3rd Mar 1930 | Box 12 \ 1 01-page144 | |
| Recommendations for investigating Phantom II steering complaints, focusing on wheel balance, tyre pressures, and pivot lean. | 15th May 1930 | Box 12 \ 1 01-page145 | |
| Page detailing steering and suspension adjustments, including wheel toe-in, cross-steering tube poundage, and shock absorber issues. | 15th May 1930 | Box 12 \ 1 01-page146 | |
| Instructions on checking shock absorber oil levels, tyre selection for steering issues, and testing the cross-steering tube load. | 13th May 1930 | Box 12 \ 1 01-page147 | |
| Blueprint with handwritten notes on the specifications and adjustments for a cross-steering tube. | 13th May 1930 | Box 12 \ 1 01-page148 | |
| Standardisation of central oiling for front and rear chassis axles. | 2nd Jun 1930 | Box 12 \ 1 01-page149 | |
| Experiment to resolve a complaint about a failing metering tube for the Bijur oil supply on the front axle. | 12th Nov 1930 | Box 12 \ 1 01-page150 | |
| Method for increasing front braking by lengthening the central lever of the front brake equaliser shaft. | 14th Oct 1932 | Box 12 \ 1 01-page151 | |
| Requesting an investigation into converting a Silver Ghost front axle to a roller bearing pivot system to test on a 20-EX chassis. | 4th Nov 1932 | Box 12 \ 1 01-page152 | |
| Standardisation report for increasing the front axle braking percentage from 35% to 40%. | 3rd Oct 1932 | Box 12 \ 1 01-page153 | |
| Phantom II axle ratios, engine smoothness, and a proposal to test a new axle ratio on a trials car. | 18th Jun 1934 | Box 12 \ 1 01-page154 | |
| Modifications to axle control and springs for fitting a Phantom front axle to a Spectre model. | 14th Feb 1935 | Box 12 \ 1 01-page155 | |
| Stiffening of the upper roller bearing housings on the Phantom front axle pivot. | 25th Apr 1935 | Box 12 \ 1 01-page156 | |
| Drawings for a rear axle and proposing modifications to the braking system. | 15th Jan 1926 | Box 12 \ 2 02-page001 | |
| Modified rear axle tube (N.sch.2140) and an updated diagram of stresses. | 10th Feb 1926 | Box 12 \ 2 02-page002 | |
| Progress and delays concerning the testing of back axle controls for the Phantom model. | 27th Feb 1926 | Box 12 \ 2 02-page003 | |
| Clarifying the front and back axle tread dimensions for the New Phantom chassis. | 31th Mar 1925 | Box 12 \ 2 02-page004 | |
| Design alterations for a rear axle, specifically concerning scalloping flanges and bolt positions. | 31th Mar 1926 | Box 12 \ 2 02-page005 | |
| New rear hub for the E.A.C.VII semi-elliptic controlled axle, including a list of blueprints and a request to order parts. | 19th May 1926 | Box 12 \ 2 02-page006 | |
| Design of a rear axle casing with hypoid gears and requesting further dimensions. | 6th Oct 1926 | Box 12 \ 2 02-page007 | |
| Query and response regarding a potential increase in vehicle body width. | 23th Oct 1976 | Box 12 \ 2 02-page008 | |
| Standardisation of chassis parts for a rear axle with 1' wider track. | 23th Sep 1926 | Box 12 \ 2 02-page009 | |
| Standardisation sheet regarding the rear axle with a 1' wider track. | 23th Oct 1926 | Box 12 \ 2 02-page010 | |
| Modifications to the rear axle gearbox for lower ratio hypoid gears. | 28th Oct 1926 | Box 12 \ 2 02-page011 | |
| Fitting and testing of jacking pads on a Phantom rear axle. | 26th May 1927 | Box 12 \ 2 02-page012 | |
| Standardisation document for jack pads fitted to the near axle to improve jacking. | 25th May 1927 | Box 12 \ 2 02-page013 | |
| Introduction of a new standardised chassis part, including costs and testing details. | 1st Oct 1927 | Box 12 \ 2 02-page014 | |
| Design and ordering of hypoid rear axle gears with different offsets. | 25th Jun 1927 | Box 12 \ 2 02-page015 | |
| Reminder requesting comparative weights for EAC.7 and 40/50 back axles and their associated components. | 8th Oct 1927 | Box 12 \ 2 02-page016 | |
| Proposed modification to the rear axle centre casing, including experimental changes to bearings and the differential cage. | 12th Oct 1927 | Box 12 \ 2 02-page017 | |
| Axle weights, comparing an open propeller shaft with cantilever construction and detailing weight savings. | 27th Nov 1927 | Box 12 \ 2 02-page018 | |
| Weight comparison of axle components between the EAC.7 and 40/50 HP models, detailing alterations due to the Hotchkiss drive. | 27th Nov 1927 | Box 12 \ 2 02-page019 | |
| Table comparing weights of axle components to calculate weight savings between models EAC.7 and 40/50. | 27th Nov 1927 | Box 12 \ 2 02-page020 | |
| Comparison table of axle weights for EAC.7 and KAE 40/50 models. | 1st Nov 1927 | Box 12 \ 2 02-page021 | |
| Technical discussion regarding axle weights, component weights, and their impact on sprung vs. unsprung mass. | 1st Nov 1927 | Box 12 \ 2 02-page022 | |
| Axle weight calculations and comparing the weight of the EAC.7 transmission type against the standard 40/50 model. | 8th Nov 1927 | Box 12 \ 2 02-page023 | |
| Rear axle control weight reduction and spring performance for the 40/50 model. | 1st Jan 1928 | Box 12 \ 2 02-page024 | |
| Recommendations on axle ratios based on car weight, destination, and customer preferences. | 1st Jan 1928 | Box 12 \ 2 02-page025 | |
| Comparative table of weights for bevel wheels and pinions for various axle types. | 3rd Jan 1928 | Box 12 \ 2 02-page026 | |
| Outlining alternative suggestions for oil retaining devices on a 1' offset hypoid rear axle. | 28th Feb 1928 | Box 12 \ 2 02-page027 | |
| Proposal for centralised chassis lubrication for the rear axle. | 17th Mar 1928 | Box 12 \ 2 02-page028 | |
| Suggestion concerning central oiling for the front anchorage of the rear spring, referencing a previous suggestion for 'India 3'. | 14th Apr 1928 | Box 12 \ 2 02-page029 | |
| Modification to the endwise locating washer for the 'SS' Rear Axle to ease assembly. | 21th Apr 1928 | Box 12 \ 2 02-page030 | |
| Modifications to the centralised chassis lubrication and rear spring attachment for a Phantom 12-EX. | 10th May 1928 | Box 12 \ 2 02-page031 | |
| Wearing pad for the rear axle's central chassis lubrication system. | 11th May 1928 | Box 12 \ 2 02-page032 | |
| Simplified arrangement for the centralised chassis lubrication system on the rear axle. | 16th May 1928 | Box 12 \ 2 02-page033 | |
| Satisfactory performance of a Hypoid rear axle and issues with wing clearance for coachbuilders. | 7th Jun 1928 | Box 12 \ 2 02-page034 | |
| Slight modifications to the rear axle end to accommodate a rebuilt wire wheel. | 21th Sep 1928 | Box 12 \ 2 02-page035 | |
| Confirming the selection of axle N.sch.2718 over N.sch.2625. | 24th Sep 1928 | Box 12 \ 2 02-page036 | |
| Introduction of the 14 tooth axle as a standard part, seeking a timeline for the change. | 27th Sep 1928 | Box 12 \ 2 02-page037 | |
| Providing instructions and a diagram for fitting wooden plugs into brake shafts. | 16th Nov 1928 | Box 12 \ 2 02-page038 | |
| The requirement for air vessels on the rear axle for the centralised lubrication system. | 20th Nov 1928 | Box 12 \ 2 02-page039 | |
| Modifications to the 'SS' rear axle damper to improve accessibility for adjustments. | 21th Nov 1928 | Box 12 \ 2 02-page040 | |
| Positioning and suggested modifications for the 'SS' Rear Axle Damper. | 22th Nov 1928 | Box 12 \ 2 02-page041 | |
| Scheme for the 'SS' rear axle and damper to enable cap removal without removing the damper from the frame. | 24th Nov 1928 | Box 12 \ 2 02-page042 | |
| Modifications to the 'SS' rear axle damper valve plugs. | 30th Nov 1928 | Box 12 \ 2 02-page043 | |
| Investigation of noisy 'SS' rear axles and a proposed modification to the axle rig for easier adjustment. | 1st Dec 1928 | Box 12 \ 2 02-page044 | |
| Urgent completion of 'SS' and '20-EX' chassis, proposing the use of standard bevels to avoid delays waiting for American Hypoid Gears. | 4th Jan 1929 | Box 12 \ 2 02-page045 | |
| Telegram regarding travel to London and the availability of cars. | 10th Jan 1932 | Box 12 \ 2 02-page046 | |
| Modifications to rear axle oil drain holes to prevent them from choking with mud. | 7th Feb 1929 | Box 12 \ 2 02-page047 | |
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