| Description | Date | Identifier | |
| Query regarding the placement of lubricators on Goshawk 11 steering joints. | 27th Apr 1923 | Box 49 \ 4 Scan184 | |
| Query regarding the performance and wear of Goshawk 11 Radius Rods and their ball joints after considerable mileage. | 6th Jun 1923 | Box 49 \ 4 Scan185 | |
| Design alternatives and updates for the Goshawk 11 front axle radius rods. | 20th Jun 1923 | Box 49 \ 4 Scan186 | |
| Trial for an alternative method of securing the ball end on the Goshawk 11 steering pendulum lever. | 1st Jul 1923 | Box 49 \ 4 Scan187 | |
| Diagram and specifications for the Goshawk Stub Axle. | 1st Aug 1923 | Box 49 \ 4 Scan188 | |
| Issues with 40/50 Chassis front axles bending backwards and the suspected cause. | 15th Aug 1923 | Box 49 \ 4 Scan189 | |
| Diagram and specifications for a 40/50 model stub axle. | 24th Sep 1923 | Box 49 \ 4 Scan190 | |
| Standardisation of chassis parts, specifically alterations to taper bolts fixing steering levers to pivots. | 24th Sep 1923 | Box 49 \ 4 Scan191 | |
| Standardisation proposal to change the material of friction washers for pivots from fibre to lead-bronze. | 4th Oct 1923 | Box 49 \ 4 Scan192 | |
| Front spring breakages and potential modifications, alongside a comparison with Hispano's steering gear design. | 30th Nov 1923 | Box 49 \ 4 Scan193 | |
| Suggesting a design change to the leather cap on the cross steering tubes of the 20-HP car to improve clearance. | 8th Jan 1924 | Box 49 \ 4 Scan194 | |
| Specification sheet with diagrams and calculations for the EAC-1 steering system. | 8th Jan 1924 | Box 49 \ 4 Scan195 | |
| Tests to eliminate steering drag when braking by comparing large and small diameter tyres. | 8th Jan 1924 | Box 49 \ 4 Scan196 | |
| Production of 50 'S' Series chassis with new front axle components for front-wheel brakes. | 22th Feb 1924 | Box 49 \ 4 Scan197 | |
| Design of front and back axle controls, spring stiffness, and the continuation of a design committee. | 10th Apr 1924 | Box 49 \ 4 Scan198 | |
| Technical memorandum discussing the use of floating bushes and grease in steering pivots. | 14th May 1924 | Box 49 \ 4 Scan199 | |
| Table detailing the inclination of axle pivots for various car models. | 15th May 1924 | Box 49 \ 4 Scan200 | |
| The disadvantages of using floating bushes in steering pivots. | 21th May 1924 | Box 49 \ 4 Scan201 | |
| Front axle control, proposing the testing of a system with radius rods over one with torque rod control. | 29th May 1924 | Box 49 \ 4 Scan202 | |
| Investigation into customer complaints regarding the lubrication of the 20-HP cross steering tube ball end. | 10th Oct 1924 | Box 49 \ 4 Scan203 | |
| Customer feedback on oil leaks from the front pivots of a 20-HP chassis dripping onto the tyres. | 7th Oct 1924 | Box 49 \ 4 Scan204 | |
| Customer complaints about oil leaks from the front pivots on the 20 HP chassis. | 9th Oct 1924 | Box 49 \ 4 Scan205 | |
| Letter from 'R' instructing modifications to the Goshawk I chassis, including smaller wheels and tyres. | 15th Sep 1925 | Box 49 \ 4 Scan206 | |
| Comparing the weights of front axle and brake components for the T-series Silver Ghost, New Phantom, and Hispano models. | 9th Sep 1925 | Box 49 \ 4 Scan207 | |
| Weight comparison table for wheel and hub components for the T.series Silver Ghost, New Phantom, and Hispano models. | 17th Sep 1925 | Box 49 \ 4 Scan208 | |
| Requesting proposals for improving the front axle control on the Goshawk I car. | 21th Sep 1925 | Box 49 \ 4 Scan209 | |
| Requesting historical test reports regarding failures of the Phantom front axle forging on the bumping rig. | 29th Jun 1926 | Box 49 \ 4 Scan210 | |
| Front axle failure and bump rig testing parameters. | 1st Jul 1926 | Box 49 \ 4 Scan211 | |
| Log of front axle bumping test results, detailing failures and longevity. | 1st Jul 1926 | Box 49 \ 4 Scan212 | |
| Test results table detailing the lifespan and failure modes of various front axles under stress tests. | 4th Sep 1928 | Box 49 \ 4 Scan213 | |
| Letter from the American branch to the London office requesting bump test data for an advertising campaign. | 4th Sep 1928 | Box 49 \ 4 Scan214 | |
| The minimum satisfactory life of springs, axle pivots, and steering levers on a bumping rig. | 20th Sep 1928 | Box 49 \ 4 Scan215 | |
| Note confirming the receipt of springs from Geo. Salter & Co. for experiments. | 25th Jun 1919 | Box 49 \ 4 Scan216 | |
| To the Order Office listing parts received from various suppliers for experimental purposes. | 2nd Jul 1919 | Box 49 \ 4 Scan217 | |
| Sourcing a black ebonite finish for steering column controls by consulting the Silvertown Rubber Company. | 17th Oct 1919 | Box 49 \ 4 Scan218 | |
| Requesting a new design for the Goshawk pendulum lever, based on scheme 675, which will also be used on the Kite. | 7th Dec 1920 | Box 49 \ 4 Scan219 | |
| Two design schemes, 657 and 670, for the Goshawk steering system, comparing strength, dimensions, and cost. | 1st Dec 1920 | Box 49 \ 4 Scan220 | |
| Modifications to the steering box for the 'Goshawk' and 'Kite' models, proposing a parallel serration design. | 30th Dec 1920 | Box 49 \ 4 Scan221 | |
| New construction scheme for the steering box shaft for the 'Goshawk' and 'Kite' models. | 1st Jan 1921 | Box 49 \ 4 Scan222 | |
| Design specifications for the 'Goshawk I & 11' steering wheel. | 27th Jan 1921 | Box 49 \ 4 Scan223 | |
| Flexible steering support causing side member twist on the Goshawk 1Car. | 22th Jul 1920 | Box 49 \ 4 Scan224 | |
| Steering issues and proposed modifications for the Goshawk I vehicle. | 28th Apr 1925 | Box 49 \ 4 Scan225 | |
| Fitting a light torque arm to car 1-G-1 to prevent axle lean and dive when cornering. | 25th May 1925 | Box 49 \ 4 Scan226 | |
| Trial fitting of a torque arm on car 1-G-1. | 15th Jul 1925 | Box 49 \ 4 Scan227 | |
| Substituting the existing pendulum lever with a modified design for the Goshawk and Kite engines. | 7th Dec 1920 | Box 49 \ 4 Scan228 | |
| Steering column, pedal, and seat positions for the 'Kite' chassis, referencing drawing LeC.1323. | 18th Dec 1920 | Box 49 \ 4 Scan229 | |
| Use of Pendulum lever F.9016 for the steering column box on the 'Kite' chassis. | 30th Dec 1920 | Box 49 \ 4 Scan230 | |
| Modification for the 'Goshawk' and 'Kite' steering box, proposing a parallel serration design for the shaft arms. | 1st Dec 1920 | Box 49 \ 4 Scan231 | |
| New construction scheme for the 'Goshawk' and 'Kite' steering box. | 1st Jan 1921 | Box 49 \ 4 Scan232 | |
| Proposing improvements to the 'Goshawk' steering wheel by adding a second web for robustness and to withstand torque. | 17th Jan 1921 | Box 49 \ 4 Scan233 | |
| Different design proposals for the Goshawk I & II steering box. | 22th Jan 1921 | Box 49 \ 4 Scan234 | |
| From Mr. Royce regarding the proportions of the Goshawk 11 steering box. | 27th Jan 1921 | Box 49 \ 4 Scan235 | |
| Design specifications for the 'Goshawk I & 11' steering wheel. | 27th Jan 1921 | Box 49 \ 4 Scan236 | |
| Instructions and diagram for altering the Goshawk 11 steering column, pedal, and seat positions. | 10th Dec 1929 | Box 49 \ 4 Scan237 | |
| Drawings and modifications for the Goshawk II steering column. | 11th Apr 1921 | Box 49 \ 4 Scan238 | |
| Modifications and alternative schemes for the steering column assembly and its mounting. | 1st Apr 1921 | Box 49 \ 4 Scan239 | |
| Revisions to the pedal, steering column, and driver's seat positions for the 'Coshank 11' model. | 27th Apr 1921 | Box 49 \ 4 Scan240 | |
| Modifications to the Goshawk 11 steering arrangement, moving the carburetter control to reduce cost. | 27th Apr 1921 | Box 49 \ 4 Scan241 | |
| Blueprints for Goshawk 11 revised pedal, steering column, and seat positions. | 28th Apr 1921 | Box 49 \ 4 Scan242 | |
| Distributing and discussing design schemes 902, 903, and 905 for the 'Goshawk II' steering column. | 1st May 1921 | Box 49 \ 4 Scan243 | |
| Removal of cushion springs from the Goshawk 11 steering gear to reduce complexity and steering wobble. | 9th May 1921 | Box 49 \ 4 Scan244 | |
| Progress on the Goshawk 11 chassis, model X.4270. | 21th Jun 1921 | Box 49 \ 4 Scan245 | |
| Investigation into the failure of 40/50 steering boxes, discussing potential causes and remedies. | 27th Jun 1921 | Box 49 \ 4 Scan246 | |
| Requirements for B type and D type steering for the Goshawk 11 chassis. | 11th Jul 1921 | Box 49 \ 4 Scan247 | |
| Drawings for Goshawk II engine steering brackets and accelerator controls. | 23th Aug 1921 | Box 49 \ 4 Scan248 | |
| Change of a steering nut from a split to a solid design and advice on manufacturing practices. | 26th Sep 1921 | Box 49 \ 4 Scan249 | |
| Recommendation to key the rear axle pinion thrust washer and tighten steering column clearances on the Goshawk 11. | 1st Oct 1921 | Box 49 \ 4 Scan250 | |
| Instruction to alter Goshawk 11 steering column drawings to match the reduced clearance of the 40/50 model. | 6th Oct 1921 | Box 49 \ 4 Scan251 | |
| Trial of a solid nut with a cast-in trough for the steering box. | 21th Oct 1921 | Box 49 \ 4 Scan252 | |
| Extract detailing a test on 'B' and 'C' type steering, noting the improved rigidity from a thick dashboard. | 10th Oct 1921 | Box 49 \ 4 Scan253 | |
| Satisfaction of steering joints and column for the Goshawk 11 chassis. | 16th Nov 1921 | Box 49 \ 4 Scan254 | |
| Issues with the steering system, including danger on left lock, driver fatigue, and insufficient hand clearance. | 30th Nov 1921 | Box 49 \ 4 Scan255 | |
| From Mr. Royce requesting a test of a bracket design to steady the Goshawk 11 steering column. | 21th Dec 1921 | Box 49 \ 4 Scan256 | |
| Extract discussing the need for a steady support for the 'D' type steering column, and its subsequent lengthening. | 30th Dec 1921 | Box 49 \ 4 Scan257 | |
| Analysis of steering wobbles on the Goshawk 11, considering pivot design and Ackermann geometry. | 30th Dec 1921 | Box 49 \ 4 Scan258 | |
| Test data sheet for Goshawk Pendulum Levers, recording torsion, deflection, and permanent set under increasing weight. | 10th Dec 1930 | Box 49 \ 4 Scan259 | |
| Feedback on a sample steering wheel for the Goshawk 11. | 9th Jan 1922 | Box 49 \ 4 Scan260 | |
| Coachbuilder objections to the proposed method of supporting the steering column on the Goshawk model. | 17th Mar 1922 | Box 49 \ 4 Scan261 | |
| Correct positioning of the steering wheel for the Goshawk II chassis. | 23th Mar 1922 | Box 49 \ 4 Scan262 | |
| Steering improvements and investigating radiator water loss on the Goshawk-11. | 27th Mar 1922 | Box 49 \ 4 Scan263 | |
| Instrument board and steering column support for Goshawk-11 models. | 13th Apr 1922 | Box 49 \ 4 Scan264 | |
| The breakage of a steering box for a 5-Goshawk-11 and the arrangement of a replacement part. | 24th Apr 1922 | Box 49 \ 4 Scan265 | |
| Requesting a broken Goshawk 11 steering box be sent for inspection to determine the location of the breakage. | 27th Apr 1922 | Box 49 \ 4 Scan266 | |
| Proposal for a plain thrust bearing in the steering column for the Goshawk 11. | 29th Apr 1922 | Box 49 \ 4 Scan267 | |
| Proposed modifications to the Goshawk 11 steering column. | 19th May 1922 | Box 49 \ 4 Scan268 | |
| From Mr. Royce requesting a vibration test on a Goshawk 11 steering column support to investigate a fracture. | 19th May 1922 | Box 49 \ 4 Scan269 | |
| Three suggested reasons for the breaking of a Goshawk 11 steering box. | 19th May 1922 | Box 49 \ 4 Scan270 | |
| Suggestions regarding a steering tube link, box strength, and material considerations for a die casting. | 22th May 1922 | Box 49 \ 4 Scan271 | |
| Modifications to the Goshawk driver's seat and steering to improve comfort. | 22th May 1922 | Box 49 \ 4 Scan272 | |
| Modifications to car body design concerning seating, driver comfort, and construction guidelines for Goshawks. | 31th May 1922 | Box 49 \ 4 Scan273 | |
| Solution for an oil leak in the Goshawk steering gear. | 31th May 1922 | Box 49 \ 4 Scan274 | |
| Modifications and material improvements for the Goshawk steering column controls. | 14th Jun 1922 | Box 49 \ 4 Scan275 | |
| Accompanying a sketch for the Goshawk 'B' type raised steering. | 20th Jun 1922 | Box 49 \ 4 Scan276 | |
| Design proposals for a 4-seater Goshawk Saloon body, including steering and seat configuration. | 23th Jun 1922 | Box 49 \ 4 Scan277 | |
| Strength and potential failure of the Goshawk steering box made from aluminium. | 23th Jun 1922 | Box 49 \ 4 Scan278 | |
| Failure of a Goshawk steering box and proposing testing procedures. | 23th Jun 1922 | Box 49 \ 4 Scan279 | |
| Proposal from Mr. Royce for mounting the Goshawk steering column to prevent breakage from frame racking. | 24th Jun 1922 | Box 49 \ 4 Scan280 | |
| The revision of the control lever springs on the Goshawk steering column, reducing the hand knob load from 3.5 lbs to 2.5 lbs. | 30th Jun 1922 | Box 49 \ 4 Scan281 | |
| Modification to the Goshawk controls, specifically adding a spring to the throttle valve spindle. | 30th Jun 1922 | Box 49 \ 4 Scan282 | |
| Goshawk steering box failure and associated component testing. | 30th Jun 1922 | Box 49 \ 4 Scan283 | |
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