| Description | Date | Identifier | |
| Rear wheel arch clearances on the Phantom II, addressing tyre rubbing issues and the need for modifications. | 2nd Jan 1930 | Box 14 \ 8 Scan201 | |
| Phantom II rear wheel arch clearances, addressing brake drum and various tyre fitment issues. | 2nd Jan 1930 | Box 14 \ 8 Scan202 | |
| Request for the dimensions of new proposed 20' tyres and rims to progress with coachwork which has been held up. | 2nd Jan 1930 | Box 14 \ 8 Scan203 | |
| Blueprints for modifications to the rear wheel arch clearances on the Phantom II. | 3rd Jan 1930 | Box 14 \ 8 Scan204 | |
| Letter concerning a subframe fouling a brake drum on chassis 22-WJ and a query about correct coachbuilding procedures. | 18th Jan 1930 | Box 14 \ 8 Scan205 | |
| Customer complaint regarding weak suspension, traced to a faulty sub-frame fitting by the body builder. | 2nd Jan 1930 | Box 14 \ 8 Scan206 | |
| Subframe and body clearance issues for Chassis 22-WJ, a Phantom II. | 6th Jan 1930 | Box 14 \ 8 Scan207 | |
| Responding to three queries regarding subframe and body fitting on chassis 22-WJ. | 22th Jan 1930 | Box 14 \ 8 Scan208 | |
| Brief thank you note regarding information on subframes. | 28th Jan 1930 | Box 14 \ 8 Scan209 | |
| Investigations into radiator shimmy, detailing experiments with frame stiffening, axle changes, and wheel sizes. | 29th Jan 1930 | Box 14 \ 8 Scan210 | |
| Modifications required for fitting a spare wheel carrier for 7' section tyres. | 3rd Feb 1930 | Box 14 \ 8 Scan211 | |
| Solutions for radiator shimmy on the Phantom II, including suspension modifications and suggestions from Mr. Royce. | 10th Feb 1930 | Box 14 \ 8 Scan212 | |
| Design proposal and sketch for a modified body mounting scheme to address chassis torsion and radiator shimmy. | 15th Feb 1930 | Box 14 \ 8 Scan213 | |
| Schemes to cure 'radiator jellying', requesting sketches for a single point body mounting. | 15th Feb 1930 | Box 14 \ 8 Scan214 | |
| Solutions for 'frame jellying' by testing different shock absorber mountings. | 15th Feb 1930 | Box 14 \ 8 Scan215 | |
| Methods of observation for the phenomenon known as 'frame jellying'. | 19th Feb 1930 | Box 14 \ 8 Scan216 | |
| Analysis of vehicle frame vibration, specifically 'frame jellying' and its relationship to high-speed wobble. | 19th Feb 1930 | Box 14 \ 8 Scan217 | |
| Analysis of vehicle frame twisting, engine movement, and wobbles, exploring solutions for 'jellying'. | 19th Feb 1930 | Box 14 \ 8 Scan218 | |
| Experiments to counteract 'jellying' by altering frame periodicity and shock damper loading. | 19th Feb 1930 | Box 14 \ 8 Scan219 | |
| Experiments on vehicle body attachments and frame damping. | 19th Feb 1930 | Box 14 \ 8 Scan220 | |
| Experiments to improve steering and reduce 'jellying' by altering the front axle assembly, which yielded no improvements. | 19th Feb 1930 | Box 14 \ 8 Scan221 | |
| Summary of the position on chassis vibration ('jellying') issues and potential solutions. | 19th Feb 1930 | Box 14 \ 8 Scan222 | |
| Page discussing the fitting of spare wheels and extra damping. | 19th Feb 1930 | Box 14 \ 8 Scan223 | |
| Blueprint showing a test rig and recording apparatus for measuring radiator movement. | 20th Feb 1930 | Box 14 \ 8 Scan224 | |
| Heavily faded typed document with a purple 'Print Room' stamp in the bottom right corner. | 20th Feb 1930 | Box 14 \ 8 Scan225 | |
| Five drawings for the application of increased stiffness to the front end of the Phantom II frame. | 24th Feb 1930 | Box 14 \ 8 Scan226 | |
| Frame modifications, including fitting a larger diameter tube near the radiator and a new shock absorber scheme. | 3rd Mar 1930 | Box 14 \ 8 Scan227 | |
| Tenth report of the design committee discussing frame jellying, rear axle failure, and battery recharging capacity. | 5th Mar 1930 | Box 14 \ 8 Scan228 | |
| Experimental subframe mounting techniques and tests on body 'booming' and engine roughness. | 12th Mar 1930 | Box 14 \ 8 Scan229 | |
| Remarks on body mounting, comparing rubber isolation to metal-to-metal contact. | 12th Mar 1930 | Box 14 \ 8 Scan230 | |
| Tests conducted to resolve 'frame and radiator jellying' issues. | 12th Mar 1930 | Box 14 \ 8 Scan231 | |
| Explanation of measurements shown on an attached print, relating to various curves that demonstrate engine mounting, frame stiffness, and radiator movement. | 15th Mar 1930 | Box 14 \ 8 Scan232 | |
| Historical problems with subframe mounting and the justification for adding a central support. | 15th Mar 1930 | Box 14 \ 8 Scan233 | |
| Methods for mounting the car body to the chassis to reduce rolling and engine vibrations. | 15th Mar 1930 | Box 14 \ 8 Scan234 | |
| Testing requirements for body sub-frames and engine mountings prior to standardisation. | 15th Mar 1930 | Box 14 \ 8 Scan235 | |
| Wheel arch clearances and rear track dimensions for the P.2. vehicle. | 7th Apr 1930 | Box 14 \ 8 Scan236 | |
| Proposed improvements for an experimental car to address frame jellying, steering, and engine smoothness. | 14th Apr 1930 | Box 14 \ 8 Scan237 | |
| Requesting drawings for a subframe for the 26-EX car, needed by May 2nd. | 24th Apr 1930 | Box 14 \ 8 Scan238 | |
| Specifying the chassis number 26-KX for a Continental Phantom II and its production schedule. | 24th Apr 1930 | Box 14 \ 8 Scan239 | |
| Modifications to the scuttle, dashboard, and subframe for a Phantom II experimental car. | 28th Apr 1930 | Box 14 \ 8 Scan240 | |
| Providing instructions on the subframe for a Continental car, specifying it should be the standard Universal Type. | 28th Apr 1930 | Box 14 \ 8 Scan241 | |
| Solutions for radiator jellying, inertia dampers, and universal body mounting. | 5th May 1930 | Box 14 \ 8 Scan242 | |
| Continued memorandum outlining three methods for insulating a vehicle's power unit, body, and passengers from vibrations. | 5th May 1930 | Box 14 \ 8 Scan243 | |
| Issues and required improvements for body mounting and chassis isolation. | 21th May 1930 | Box 14 \ 8 Scan244 | |
| Investigation into chassis and body-related noise and vibration issues, including 'boom' and 'rumble'. | 21th May 1930 | Box 14 \ 8 Scan245 | |
| Body mounting, scuttle isolation, and recommendations for front and rear aprons. | 24th May 1930 | Box 14 \ 8 Scan246 | |
| Modifications to body mounting, exhaust, and subframe support to improve smoothness and reduce fumes. | 24th May 1930 | Box 14 \ 8 Scan247 | |
| New cantilever battery support (N. scheme 3114) for the Phantom II model. | 29th May 1930 | Box 14 \ 8 Scan248 | |
| Design of a cantilever support for a left-hand chassis battery with a universal subframe. | 6th Jun 1930 | Box 14 \ 8 Scan249 | |
| Body rattles attributed to the P.2 subframe and defending it against blame for the issues. | 16th Jun 1930 | Box 14 \ 8 Scan250 | |
| The mileage and body condition of five Phantom II cars fitted with sub-frame bodies. | 18th May 1930 | Box 14 \ 8 Scan251 | |
| Condition of car bodies, focusing on window rattles and the benefits of using a subframe to increase body longevity. | 18th May 1930 | Box 14 \ 8 Scan252 | |
| The time taken to mount subframe versus non-subframe bodies and the advantages of the subframe. | 25th Jun 1930 | Box 14 \ 8 Scan253 | |
| Decision to order universal subframes for the N.2 series. | 25th Jun 1930 | Box 14 \ 8 Scan254 | |
| Modifications to the subframe on the 25-EX model, painting, and fitting of accessories. | 25th Jun 1930 | Box 14 \ 8 Scan255 | |
| Tests of completed cars detailing issues with subframe support and body alignment. | 26th Jun 1930 | Box 14 \ 8 Scan256 | |
| Standardization of the N.2 series universal type subframe, pending a 10,000-mile test. | 27th Jun 1930 | Box 14 \ 8 Scan257 | |
| Process and advantages of using subframes and subframe jigs for body assembly. | 27th Jun 1930 | Box 14 \ 8 Scan258 | |
| Body mounting alignment with coachbuilder Hoopers and proposing the use of a dummy subframe to ensure correct fitting. | 25th Jun 1930 | Box 14 \ 8 Scan259 | |
| Typed letter arranging a meeting regarding sub-frames with Mr. Carpenter of Hoopers. | 30th Jun 1930 | Box 14 \ 8 Scan260 | |
| Extract from a report on completed car tests, regarding a request to the Works for more accurate subframe production. | 5th Jul 1930 | Box 14 \ 8 Scan261 | |
| Extract detailing issues with the P.2. model's rear wheel arch, subframe centre bearing, and subframe manufacturing. | 15th Jul 1930 | Box 14 \ 8 Scan262 | |
| Body interchangeability and a specific issue with the body runner bracket in the subframe. | 22th Jul 1930 | Box 14 \ 8 Scan263 | |
| Failure of subframe rear support brackets on P.2. cars and requesting an investigation. | 22th Jul 1930 | Box 14 \ 8 Scan264 | |
| Arguing against the use of wooden subframes and in favor of metal ones for RRAI, citing issues with wood in American climates. | 22th Jul 1930 | Box 14 \ 8 Scan265 | |
| Third failure of a P.2 Subframe Rear Support Bracket. | 23th Jul 1930 | Box 14 \ 8 Scan266 | |
| Failure and redesign of the Phantom II subframe rear support bracket. | 24th Jul 1930 | Box 14 \ 8 Scan267 | |
| Diagram with notes illustrating a design modification to strengthen a bracket at its weak points. | 24th Jul 1930 | Box 14 \ 8 Scan268 | |
| Blueprint for a strengthened rear support for the Phantom II subframe. | 24th Jul 1930 | Box 14 \ 8 Scan269 | |
| Deletion of subframes from a contract and the method of mounting bodies without them. | 25th Jul 1930 | Box 14 \ 8 Scan270 | |
| The investigation of subframes for the American operation (R.R.A.I.). | 29th Jul 1930 | Box 14 \ 8 Scan271 | |
| Subframe for the L.H. P.ll, its vibration issues, and the suitability of wood in car bodies. | 28th Jul 1930 | Box 14 \ 8 Scan272 | |
| Letter concluding a discussion on problems with Brewster bodies, signed by Maurice Olley. | 2nd Sep 1930 | Box 14 \ 8 Scan273 | |
| Sub-frames, spare wheels, and chassis blueprints for the L.A.P. II Chassis project. | 2nd Sep 1930 | Box 14 \ 8 Scan274 | |
| Sg. to BY regarding the supply of blueprints requested by Mr. Beaver. | 2nd Sep 1930 | Box 14 \ 8 Scan275 | |
| Tests on the Phantom II chassis regarding the removal of the flexible subframe mounting. | 3rd Sep 1930 | Box 14 \ 8 Scan276 | |
| The use of subframes on the 20 HP model and the standard placement for spare wheels. | 3rd Sep 1930 | Box 14 \ 8 Scan277 | |
| Instructing a department to omit the subframe from the American L.H. Phantom II chassis programme. | 3rd Sep 1930 | Box 14 \ 8 Scan278 | |
| Request to confirm work on a universal subframe for a short type Phantom chassis. | 10th Oct 1930 | Box 14 \ 8 Scan279 | |
| Conference report detailing subframe fitting issues and agreed accuracy limits. | 2nd Oct 1930 | Box 14 \ 8 Scan280 | |
| List of specifications and agreed procedures for body mounting, including subframe dimensions, rear axle alignment, and bonnet contouring. | 11th Oct 1930 | Box 14 \ 8 Scan281 | |
| The subframe for car 27-EX being sent to Messrs. Park Wards and the chassis specification. | 11th Oct 1930 | Box 14 \ 8 Scan282 | |
| Questioning the request for wider wheels on a car, citing reduced maneuverability and potential legal issues in Europe. | 21th Oct 1930 | Box 14 \ 8 Scan283 | |
| Implications of fitting new wheels to the Phantom II model. | 24th Oct 1930 | Box 14 \ 8 Scan284 | |
| Recommendation to reduce the wheel cone angle to prevent paint damage on the spokes. | 19th Aug 1930 | Box 14 \ 8 Scan285 | |
| Standardisation document for the universal subframe and related chassis parts. | 19th Aug 1930 | Box 14 \ 8 Scan286 | |
| Letter to Mr. Hives discussing the technical advantages of a three-point body subframe support system. | 26th Jan 1931 | Box 14 \ 8 Scan287 | |
| Analysis of sill bending loads and the effects of moving rear support points. | 23th Jun 1930 | Box 14 \ 8 Scan288 | |
| Fundamentals of body construction, load distribution, and bending moments. | 23th Jun 1930 | Box 14 \ 8 Scan289 | |
| Fundamentals of body construction, including load distribution and bending moments. | 23th Jun 1930 | Box 14 \ 8 Scan290 | |
| Design analysis for an ideal car sill, comparing uniform and concentrated load calculations. | 23th Jun 1930 | Box 14 \ 8 Scan291 | |
| Report discussing chassis and body interferences concerning crossmembers, hangers, and wheel housing clearance. | 23th Jun 1930 | Box 14 \ 8 Scan292 | |
| Proposed body suspension designs, experimental body construction, and patent considerations. | 2nd Mar 1931 | Box 14 \ 8 Scan293 | |
| Design improvements for the rear spring front anchorage. | 2nd Mar 1931 | Box 14 \ 8 Scan294 | |
| Strongly disagreeing with a report to discontinue using subframes, citing past failures and suggesting further testing. | 7th Feb 1931 | Box 14 \ 8 Scan295 | |
| Reviewing the use and cost-effectiveness of subframes, particularly on the 25 HP model. | 5th Mar 1931 | Box 14 \ 8 Scan296 | |
| From Sg. to Hs. regarding the need to discuss subframes before making a decision. | 9th Mar 1931 | Box 14 \ 8 Scan297 | |
| Frame jellying and steering tests conducted on three experimental Phantom II cars with varying configurations. | 1st Apr 1931 | Box 14 \ 8 Scan298 | |
| Engine booming and induction roar in car 27-EX, comparing its performance to car 26-EX. | 21th Apr 1931 | Box 14 \ 8 Scan299 | |
| Test report on an undamped frame stiffener to combat 'jellying' on car 25-EX. | 21th Apr 1931 | Box 14 \ 8 Scan300 | |
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