| Description | Date | Identifier | |
| Standardisation of 1500 lbs springs for the heavy front axle and .720 worm. | 29th Nov 1926 | Box 67 \ 2 scan0270 | |
| Standardisation sheet for 1500 lbs springs with an old type heavy front axle and 720 worm. | 22th Dec 1926 | Box 67 \ 2 scan0271 | |
| Experiments on the Phantom front axle control, specifically the damper lever length and related modifications. | 23th Dec 1926 | Box 67 \ 2 scan0272 | |
| Modifications to the front axle die and forging for experimental schemes. | 11th Jan 1927 | Box 67 \ 2 scan0273 | |
| Bench and road tests analyzing friction in the steering pivot head. | 26th Jan 1928 | Box 67 \ 2 scan0274 | |
| Analysis of friction torque in steering components under various load and configuration conditions. | 26th Jan 1928 | Box 67 \ 2 scan0275 | |
| Steering friction test results under various axle conditions. | 26th Jan 1928 | Box 67 \ 2 scan0276 | |
| Alterations to the steering design, specifically regarding friction and the use of a hydraulic damper. | 2nd Feb 1927 | Box 67 \ 2 scan0277 | |
| Request to prepare a set of parts for front axle control, necessitating a new front axle, a .720 lead worm and nut, and gears for a 17/52 rear axle ratio. | 2nd Feb 1927 | Box 67 \ 2 scan0278 | |
| Query regarding the fitment of a new lightened front axle on a Modified Sports Phantom and its effect on track width and wings. | 3rd Feb 1927 | Box 67 \ 2 scan0279 | |
| The new axle for the 10-EX increasing the front track by 1', which needs to be considered for the front wings. | 1st Feb 1927 | Box 67 \ 2 scan0280 | |
| Declining design work on dampers and steering geometry, suggesting it be handled by West Wittering due to being overworked. | 10th Feb 1927 | Box 67 \ 2 scan0281 | |
| Requesting a stop for the 40/50 HP front equaliser shaft to avoid post-production alterations. | 15th Feb 1927 | Box 67 \ 2 scan0282 | |
| Front brake squeaks on experimental cars with a lightened axle and the decision to fit a damper. | 1st Feb 1927 | Box 67 \ 2 scan0283 | |
| Proposal for a variable hydraulic shock damper system controlled by a servo-driven pump. | 16th Feb 1927 | Box 67 \ 2 scan0284 | |
| Recommendation regarding the pivot lean on the Phantom's front axle. | 18th Feb 1927 | Box 67 \ 2 scan0285 | |
| Pull-off springs, cable loads, and stress calculations for the Phantom front axle and brakes. | 19th Feb 1927 | Box 67 \ 2 scan0286 | |
| Specifications and clearances for a side steering tube. | 2nd Feb 1927 | Box 67 \ 2 scan0287 | |
| Troubleshooting steering issues that occur during brake application on the Phantom model fitted with a lightened front axle. | 25th Feb 1927 | Box 67 \ 2 scan0288 | |
| Error and subsequent modifications related to using 20% stiffer springs on the Phantom car. | 1st Mar 1927 | Box 67 \ 2 scan0289 | |
| Proposal concerning the use of 20% stiffer friction type shock dampers. | 1st Mar 1927 | Box 67 \ 2 scan0290 | |
| Blueprint for the experimental fitting of a Front Axle Control Damper on a Phantom Chassis 10-EX. | 6th Apr 1927 | Box 67 \ 2 scan0291 | |
| Friction in the cross steering tube and a modification to reduce steering effort on older axles. | 13th Apr 1927 | Box 67 \ 2 scan0292 | |
| Oil leaking from the Phantom front hubs onto the brakes and potential solutions. | 7th Apr 1927 | Box 67 \ 2 scan0293 | |
| Instructions for fitting distance collars to spring loaded cross steering tubes on cars with old type front axles. | 16th Apr 1927 | Box 67 \ 2 scan0294 | |
| Improvements to the steering worm and nut assembly and spring return. | 16th Apr 1927 | Box 67 \ 2 scan0295 | |
| Design of a self-centering steering system and related components. | 25th Apr 1927 | Box 67 \ 2 scan0296 | |
| Designing a front axle for the 20 HP, seeking confirmation on the superiority of the Phantom axle. | 25th Apr 1927 | Box 67 \ 2 scan0297 | |
| Trial of a new vertical pivot axle fitted with castor pivots. | 27th Apr 1927 | Box 67 \ 2 scan0298 | |
| The standard axle design for the Phantom and its application to the 20 HP model. | 29th Apr 1927 | Box 67 \ 2 scan0299 | |
| From DA to Hs/Rm regarding the improvement of high speed wobbles in front axles by reducing their weight. | 30th Apr 1927 | Box 67 \ 2 scan0300 | |
| List of parts for the Phantom chassis front axle control damper, corresponding to various axle inclinations. | 3rd May 1927 | Box 67 \ 2 scan0301 | |
| Weight-saving modifications for the Phantom, focusing on the front end, wing irons, and front springs. | 5th Mar 1927 | Box 67 \ 2 scan0302 | |
| Proposed modifications to the wing stays for the Phantom model, including issues with wiring and the bonnet catch. | 5th May 1927 | Box 67 \ 2 scan0303 | |
| Request to produce a modified Cross and Side Steering Lever for a road test on a 40/50 chassis. | 5th May 1927 | Box 67 \ 2 scan0304 | |
| Testing the 40/50 HP front axle control, discussing braking, steering performance, and proposing a change to 40% front braking. | 6th May 1927 | Box 67 \ 2 scan0305 | |
| Bench test of a torque arm and its effect on spring rating. | 6th May 1927 | Box 67 \ 2 scan0306 | |
| Steering performance and road reaction on the 40/50 HP model, with comparisons to other steering systems. | 6th May 1927 | Box 67 \ 2 scan0307 | |
| Steering issues with worm and nut components, customer complaints, and ongoing tests into high-speed wobbles. | 18th May 1927 | Box 67 \ 2 scan0308 | |
| Request to investigate modifications enabling both artillery and wire wheels to be used on the same hubs for comparative testing on a 40/50 HP front axle. | 18th May 1927 | Box 67 \ 2 scan0309 | |
| Urgent memo requesting a test on an axle control component, which is affecting the production of 200 cars. | 19th May 1927 | Box 67 \ 2 scan0310 | |
| Accessibility and position of shock dampers for the axle control on the Phantom & EAC.7. | 27th May 1927 | Box 67 \ 2 scan0311 | |
| Tests on the axle control system, including the shock damper, a 12' lever, and standardising the torque control. | 31th May 1927 | Box 67 \ 2 scan0312 | |
| Request to the Experimental Department to produce a set of pipes for the Phantom Engine. | 28th Jun 1927 | Box 67 \ 2 scan0313 | |
| Testing of the front axle control and a potential issue with exhaust pipe proximity. | 15th Jun 1927 | Box 67 \ 2 scan0314 | |
| Front axle shock damper control and the necessary modifications to the front exhaust pipe. | 24th Jun 1927 | Box 67 \ 2 scan0315 | |
| Line drawing of a dual-inlet pipe assembly with taps. | 25th Jun 1927 | Box 67 \ 2 scan0316 | |
| The Phantom front axle control, discussing the re-arrangement of the exhaust pipe and an investigation into axle twist. | 25th Jun 1927 | Box 67 \ 2 scan0317 | |
| Change in design for the Phantom's exhaust manifolds, preferring a single down-take scheme. | 4th Jul 1927 | Box 67 \ 2 scan0318 | |
| Axle control test, showing a graph of deflection versus load. | 9th Jul 1927 | Box 67 \ 2 scan0319 | |
| Improvements to car riding qualities through changes to tyres, shock absorbers, and weight distribution. | 9th Jul 1927 | Box 67 \ 2 scan0320 | |
| New exhaust pipe scheme for Phantom chassis fitted with front axle control. | 7th Sep 1927 | Box 67 \ 2 scan0321 | |
| From BJ to Hs regarding Front Axle Torque Control and Standardisation Sheet No. 8420/7420. | 7th Jul 1927 | Box 67 \ 2 scan0322 | |
| Testing schedule for a new chassis design concerning the front axle torque control. | 22th Jul 1927 | Box 67 \ 2 scan0323 | |
| Standardisation of chassis parts for front axle torque control. | 22th Jun 1927 | Box 67 \ 2 scan0324 | |
| The standardization of chassis parts, detailing costs and testing information for a new part. | 28th Mar 1928 | Box 67 \ 2 scan0325 | |
| Technical memo discussing steering problems on Springfield chassis models, particularly concerning low-pressure tyres and worm gear modifications. | 1st Aug 1927 | Box 67 \ 2 scan0326 | |
| Technical document detailing issues with the brake mechanism and banging in the exhaust. | 1st Aug 1927 | Box 67 \ 2 scan0327 | |
| Benefits of using a high-speed governor and roller bearing throttle. | 23th Aug 1927 | Box 67 \ 2 scan0328 | |
| Suitability of a brake model, noting their own brakes are licensed from Hotchkiss but differ materially. | 23th Aug 1927 | Box 67 \ 2 scan0329 | |
| Recommending the standardisation of a metal dust cover for Phantom rear brake actuating shafts. | 27th Aug 1927 | Box 67 \ 2 scan0330 | |
| Confirming a decision to make front axle control standard on chassis from August. | 13th Oct 1927 | Box 67 \ 2 scan0331 | |
| Modification to the rear spring centre trunnion bolt for hand brake rope clearance. | 13th Oct 1927 | Box 67 \ 2 scan0332 | |
| Weakness of the front spring system under braking and the need for a lighter torque arm. | 14th Oct 1927 | Box 67 \ 2 scan0333 | |
| New scheme for packing under the front springs of the Sports Phantom car. | 24th Oct 1927 | Box 67 \ 2 scan0334 | |
| Testing Marles steering on a 98-NK car with a new type of axle. | 26th Oct 1927 | Box 67 \ 2 scan0335 | |
| Chassis problems related to acceleration for passing and potential engine improvements. | 31th Oct 1927 | Box 67 \ 2 scan0336 | |
| Specifying the required loadings for front axle control dampers. | 11th Nov 1927 | Box 67 \ 2 scan0337 | |
| Request to test valve springs and associated parts for the front axle control damper on the Phantom 'F2' series chassis. | 11th Nov 1927 | Box 67 \ 2 scan0338 | |
| Load requirements for the torque control shock damper arm. | 28th Nov 1927 | Box 67 \ 2 scan0339 | |
| Front Axle Control Damper for the Phantom 'F2' Series chassis. | 1st Dec 1927 | Box 67 \ 2 scan0340 | |
| Standard Phantom springing, specifically about the adoption of negative camber front springs and a proposal to lower the car. | 1st Dec 1927 | Box 67 \ 2 scan0341 | |
| Alternative designs for the drip plug location for the centralised chassis lubrication of the front axle control damper. | 1st Dec 1927 | Box 67 \ 2 scan0342 | |
| Spring specifications for the Phantom F2 series front axle damper control. | 7th Dec 1927 | Box 67 \ 2 scan0343 | |
| Modifications and observations for the front axle control damper and road springs. | 17th Dec 1927 | Box 67 \ 2 scan0344 | |
| First and second dummy sports chassis, including delays and the position of the brake lever. | 31th Dec 1927 | Box 67 \ 2 scan0345 | |
| Request to allow W. Bell to weigh various front axle parts for experimental information. | 1st Jan 1928 | Box 67 \ 2 scan0346 | |
| Modifications to the front axle control damper on the Phantom Chassis to increase clearance for dismounting. | 13th Jan 1928 | Box 67 \ 2 scan0347 | |
| Request for a telegraph regarding equipment to measure axle pivot lean at Chateauroux. | 2nd Feb 1928 | Box 67 \ 2 scan0348 | |
| Scheme for fitting a 9.5' shortened pendulum lever to Phantom models. | 23th Feb 1928 | Box 67 \ 2 scan0349 | |
| Lubrication of the front axle control damper for the Phantom model, suggesting modifications. | 13th Mar 1928 | Box 67 \ 2 scan0350 | |
| Report comparing the performance and efficiency of different steering worm gear designs. | 22th Mar 1928 | Box 67 \ 2 scan0351 | |
| Technical discussion on steering system performance, focusing on worm and nut types, road shocks, and friction adjustments. | 19th Jul 1927 | Box 67 \ 2 scan0352 | |
| Analysis of a proposed spring-loaded cross steering tube, including a table of friction measurements under different conditions. | 19th Jul 1927 | Box 67 \ 2 scan0353 | |
| Comparison chart of steering specifications for different Phantom series. | 28th Mar 1928 | Box 67 \ 2 scan0354 | |
| Adjustment issue with the front axle control due to variations in road springs. | 28th Mar 1928 | Box 67 \ 2 scan0355 | |
| Design origin and standardisation of a modified swinging arm. | 30th Aug 1928 | Box 67 \ 2 scan0356 | |
| Instruction to fit a standard front axle to car 98-NK. | 29th Oct 1928 | Box 67 \ 2 scan0357 | |
| Tests on axle control loads, potential wear from 'quarreling', and front spring ratings. | 26th Jun 1929 | Box 67 \ 2 scan0358 | |
| Test report on the twist of an axle control, including a graph plotting deflection versus load. | 9th Jul 1927 | Box 67 \ 2 scan0359 | |
| Tracing and ordering of a testing lever for the front axle control damper on a 40/50 HP chassis. | 25th Sep 1929 | Box 67 \ 2 scan0360 | |
| Proposed hydraulic damper for the Phantom front axle to address high-speed wobble issues. | 1st Aug 1925 | Box 67 \ 3 scan0001 | |
| Modification to the Phantom steering system to fix high-speed wobbles. | 25th Sep 1925 | Box 67 \ 3 scan0002 | |
| 10,000-mile test of a 'Phantom' car, focusing on wheel fittings and steering modifications. | 1st Sep 1925 | Box 67 \ 3 scan0003 | |
| Standardisation of cross steering levers to enable the use of well-base rims. | 29th Sep 1925 | Box 67 \ 3 scan0004 | |
| Spring-loaded ball joints for India steering connections to prevent wobbles. | 28th May 1926 | Box 67 \ 3 scan0005 | |
| Friction requirements and load adjustments for the cross steering tube. | 28th Sep 1926 | Box 67 \ 3 scan0006 | |
| Scheme showing the addition of friction to 'X' steering ball pins, including an enlarged ball and increased spring force. | 28th Sep 1926 | Box 67 \ 3 scan0007 | |
| Drawing of a side steering tube joint for an outside pendulum lever. | 27th Oct 1925 | Box 67 \ 3 scan0008 | |
| Requesting a copy of a mislaid note regarding friction requirements on steering gear ball ends. | 30th Oct 1926 | Box 67 \ 3 scan0009 | |
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