| Description | Date | Identifier | |
| Proposals for preventing frame twisting and improving body mounting rigidity on car chassis. | 12th Oct 1923 | Box 75 \ 3 scan0361 | |
| Agreement to increase the size of Goshawk cross members. | 13th Oct 1923 | Box 75 \ 3 scan0362 | |
| New frame brackets and improvements for the Goshawk chassis frame. | 13th Oct 1923 | Box 75 \ 3 scan0363 | |
| Revised scheme for 20 HP body stiffeners, including modifications to cross members and supports. | 31th Oct 1923 | Box 75 \ 3 scan0364 | |
| Required chassis modifications for the Goshawk 11, including adding and enlarging cross members. | 21th Nov 1923 | Box 75 \ 3 scan0365 | |
| Modifications for a 20 HP body underframe suspension and dashboard. | 1st Dec 1923 | Box 75 \ 3 scan0366 | |
| Modifications to the Goshawks car frame to increase stiffness and considering changes to its length. | 1st Jan 1924 | Box 75 \ 3 scan0367 | |
| Wheelbase recommendations for the Goshawk, 40/50, and 20 HP chassis. | 1st Jul 1924 | Box 75 \ 3 scan0368 | |
| Meeting notes concerning the steering lock and front spring design for the EAC.3 chassis. | 10th Jan 1924 | Box 75 \ 3 scan0369 | |
| 4-wheel brake testing, 20 HP frame length modifications, a new side lever gearbox, and brake patents. | 1st Jan 1924 | Box 75 \ 3 scan0370 | |
| Excessive chassis frame deflection on a 20 HP Landaulet and proposing to fit tie-bars as a solution. | 8th May 1924 | Box 75 \ 3 scan0371 | |
| Chassis frame deflection measurements and calculations for the Goshawk 11 model. | 13th May 1924 | Box 75 \ 3 scan0372 | |
| Request to repeat experiments with specific load conditions for a car's body underframe suspension. | 19th May 1924 | Box 75 \ 3 scan0373 | |
| Preparation and fitting of tie bars for a 20 HP Landaulet with a special body frame. | 19th May 1924 | Box 75 \ 3 scan0374 | |
| Fitting tie-bars to a 20 HP Landaulet special body frame. | 22th May 1924 | Box 75 \ 3 scan0375 | |
| Inconsistent results from a chassis frame deflection test and planning for future tests. | 27th May 1924 | Box 75 \ 3 scan0376 | |
| Arranging for fitters to visit Messrs. Barkers to fit tie bars on a 20 HP Landaulet Special Body Frame. | 29th May 1924 | Box 75 \ 3 scan0377 | |
| Standardisation of Goshawk tie-rods and the trial of a new deeper frame. | 20th Jun 1924 | Box 75 \ 3 scan0378 | |
| Modifications to the 20 HP chassis prints to accommodate the fitting of tool boxes. | 21th Jun 1924 | Box 75 \ 3 scan0379 | |
| Standardisation of frame ties for the Goshawk 11. | 21th Jun 1924 | Box 75 \ 3 scan0380 | |
| Sending of blueprints for the Goshawk II frame, specifically regarding tie rods and a frame stiffener. | 24th Jun 1924 | Box 75 \ 3 scan0381 | |
| Design change to the Goshawk III frame. | 27th Jun 1924 | Box 75 \ 3 scan0382 | |
| Request for the weight of tie rods and their fixings for a 20 HP experimental landaulet chassis GF 68. | 4th Jul 1924 | Box 75 \ 3 scan0383 | |
| Standardisation of chassis parts, specifically Frame Tie Rods. | 26th Jun 1924 | Box 75 \ 3 scan0384 | |
| Arranging the demonstration of a 20 HP Landaulet (GF.68) to Mr. Royce following modifications. | 14th Jul 1924 | Box 75 \ 3 scan0385 | |
| The performance, advantages, and issues of the Experimental Barker Landaulet GF.68. | 8th Sep 1924 | Box 75 \ 3 scan0386 | |
| Justification for fitting a frame stiffener to the 20 HP chassis. | 1st Sep 1924 | Box 75 \ 3 scan0387 | |
| Query about sending a 20 HP Landaulet with an experimental frame for testing. | 5th Sep 1924 | Box 75 \ 3 scan0388 | |
| Request to send a 20 HP Landaulet with an experimental frame to Derby for testing after the Sales Dept has finished with it. | 8th Sep 1924 | Box 75 \ 3 scan0389 | |
| 20 HP Landaulet with an experimental frame requiring body defect rectification before being sent to Derby. | 12th Sep 1924 | Box 75 \ 3 scan0390 | |
| Testing and weighing of an experimental landaulet on chassis GF-68. | 29th Sep 1924 | Box 75 \ 3 scan0391 | |
| Requesting a 20 HP experimental landaulet for further testing and an opportunity to critique a new design. | 15th Oct 1924 | Box 75 \ 3 scan0392 | |
| Successful testing of a sub-frame on a 20 HP Landaulet and arrangements for a demonstration. | 17th Oct 1924 | Box 75 \ 3 scan0393 | |
| Fitting a 20 HP car with a sub-frame to reduce body and axle noises. | 18th Oct 1924 | Box 75 \ 3 scan0394 | |
| Requesting a test drive of a 20 HP Experimental Landaulet after alterations are made. | 20th Oct 1924 | Box 75 \ 3 scan0395 | |
| Travel arrangements to Derby to view a car fitted with a Bradburn & Wedge system for the body under-frame. | 24th Oct 1924 | Box 75 \ 3 scan0396 | |
| Telegram from Herbert Scott to Hives regarding a recommendation for the 'Bradley System' for a noiseless car, after being unable to attend a meeting due to illness. | 30th Oct 1924 | Box 75 \ 3 scan0397 | |
| Letter regarding a missed demonstration of a body under-frame and scheduling a new visit to Derby. | 31th Oct 1924 | Box 75 \ 3 scan0398 | |
| Special visit to test the method of carrying a car body on a separate under-frame. | 30th Oct 1924 | Box 75 \ 3 scan0399 | |
| Committee report on car swaying, booming, and suspension schemes including a new Bradburn & Wedge device. | 11th Nov 1924 | Box 75 \ 3 scan0400 | |
| Telegram from Herbert Scott to Hives arranging a demonstration of an under-frame body in Derby. | 5th Nov 1923 | Box 75 \ 3 scan0401 | |
| Arranging a visit to Derby to see a demonstration of a body under-frame. | 5th Nov 1924 | Box 75 \ 3 scan0402 | |
| Suggesting experiments to determine underframe vibration and horizontal bending to inform the design of the EAC.2 frame. | 18th Nov 1924 | Box 75 \ 3 scan0403 | |
| Sub-frame tests with a Barker Landaulet body on a 20 HP chassis. | 17th Dec 1924 | Box 75 \ 3 scan0404 | |
| Alterations to a body sub-frame on a 20 HP car (GF.68) to investigate body noise. | 15th Dec 1924 | Box 75 \ 3 scan0405 | |
| Vehicle sub-frame principles and their effect on ride comfort and body movement. | 15th Dec 1924 | Box 75 \ 3 scan0406 | |
| Dash and scuttle frame semi-isolation scheme to prevent movement and noise. | 15th Dec 1924 | Box 75 \ 3 scan0407 | |
| 10,000-mile sub-frame test on a 20 HP car. | 19th Dec 1924 | Box 75 \ 3 scan0408 | |
| Arrangements for a 10,000-mile road test of a 20 HP car's sub-frame in France. | 19th Dec 1924 | Box 75 \ 3 scan0409 | |
| Secret memo regarding the testing plans for a new sub-frame on 'W' series and 20 HP cars. | 31th Dec 1924 | Box 75 \ 3 scan0410 | |
| Requesting a sketch for the cross bracing on a 20 HP frame and confirming a change to the subframe support. | 1st Jan 1925 | Box 75 \ 3 scan0411 | |
| Request from coachbuilder Barker's to fit a new locking device to an experimental sub-frame Landaulette. | 5th Jan 1925 | Box 75 \ 3 scan0412 | |
| Fault with the body subframe on a Goshawk model due to the front supports being too far back. | 10th Jan 1925 | Box 75 \ 3 scan0413 | |
| Stiffness of the 20 HP frame. | 13th Jan 1925 | Box 75 \ 3 scan0414 | |
| Front spring problem on the 20 HP model and a proposal to lengthen the frame. | 15th Jan 1925 | Box 75 \ 3 scan0415 | |
| Requesting a 20 HP underframe for a trial in London. | 2nd Feb 1925 | Box 75 \ 3 scan0416 | |
| The radical modification and completion timeline for the 20 HP subframe. | 2nd Feb 1925 | Box 75 \ 3 scan0417 | |
| Requesting the weight of tie-rods for a 20 HP GF-68 Landaulet with sub-frame to determine the coachwork weight. | 14th Nov 1924 | Box 75 \ 3 scan0418 | |
| Preliminary frame distortion tests conducted on a 20 HP chassis bumper. | 7th Apr 1925 | Box 75 \ 3 scan0419 | |
| Analysis of chassis frame warp and distortion, including diagrams and test measurements. | 7th Apr 1925 | Box 75 \ 3 scan0420 | |
| Frame distortion and twist, analyzing movement between cross members with varying engine bearer tightness. | 7th Apr 1925 | Box 75 \ 3 scan0421 | |
| Page with sketches and notes proposing a test for chassis frame distortion. | 6th Aug 1925 | Box 75 \ 3 scan0422 | |
| Improvements to the side brake and change speed levers for specific chassis models with a steel body subframe. | 6th Aug 1925 | Box 75 \ 3 scan0423 | |
| Simplification of a spring design for side control, with a dimensioned sketch to follow. | 10th Jun 1925 | Box 75 \ 3 scan0424 | |
| Tests on body subframes, modifications to car 9-PK, and planning for future trials. | 10th Jun 1925 | Box 75 \ 3 scan0425 | |
| Barker Cabriolet de Ville on a sub-frame for a 20 HP chassis. | 19th Jun 1925 | Box 75 \ 3 scan0426 | |
| The delay in car body construction at Barkers, awaiting essential parts for a Goshawk chassis. | 18th Jul 1925 | Box 75 \ 3 scan0427 | |
| Frame distortion tests for a standard 20 HP model on a bumping rig. | 30th Nov 1925 | Box 75 \ 3 scan0428 | |
| Preliminary frame distortion tests on a 20 HP chassis bumper. | 7th Apr 1925 | Box 75 \ 3 scan0429 | |
| Page detailing frame warp and distortion tests on a chassis. | 12th Jun 1925 | Box 75 \ 3 scan0430 | |
| Frame distortion, measuring twist between cross members with rear engine suspension slack and tight. | 12th Jun 1925 | Box 75 \ 3 scan0431 | |
| Page on chassis frame distortion, including a sketch of markings on a plate. | 12th Jun 1925 | Box 75 \ 3 scan0432 | |
| Results of long-term testing on experimental cars fitted with body subframes. | 10th Nov 1928 | Box 75 \ 3 scan0433 | |
| Special visit by the Coachwork Sub-Committee to test carrying a car body on a separate underframe. | 30th Oct 1924 | Box 75 \ 3 scan0434 | |
| Committee report discussing the testing of anti-swaying and anti-booming devices, specifically the Bradburn & Wedge scheme, on two car models. | 30th Oct 1924 | Box 75 \ 3 scan0435 | |
| Heat test results for Chassis 774, detailing temperature changes under different running conditions. | 26th Sep 1908 | Box 75 \ 4 scan0001 | |
| Engine temperature tests comparing performance with and without a fan. | 26th Jan 1909 | Box 75 \ 4 scan0002 | |
| Test log recording atmospheric and water temperatures during a run at 500 revs, with the fan belt turned on and off. | 26th Jan 1909 | Box 75 \ 4 scan0003 | |
| Temperature tests comparing conditions with and without high side-doors. | 17th Nov 1909 | Box 75 \ 4 scan0004 | |
| Note detailing observations from side-door tests and their effect on radiator temperature during a journey to and from Buxton. | 21th Sep 1909 | Box 75 \ 4 scan0005 | |
| Temperature tests taken on chassis 1106 ('Silver Phantom') on Amulree Hill. | 21th Sep 1909 | Box 75 \ 4 scan0006 | |
| Temperature test results for chassis 1152, comparing conditions with and without high side doors. | 7th Nov 1909 | Box 75 \ 4 scan0007 | |
| Departmental memo discussing solutions for excessive heat on the front floorboards of torpedo-bodied cars. | 29th Jul 1910 | Box 75 \ 4 scan0008 | |
| Departmental memo discussing radiator changes and their effect on air temperature and engine cooling. | 29th Jul 1910 | Box 75 \ 4 scan0009 | |
| Log sheet recording results from temperature tests on a vehicle under various driving conditions. | 3rd Aug 1911 | Box 75 \ 4 scan0010 | |
| The effectiveness of boards, noting they run cooler at speed but hot at full power when slow. | 1st Sep 1911 | Box 75 \ 4 scan0011 | |
| Test log comparing radiator and floorboard temperatures for Standard and Zimmerman type components over a 60-minute period. | 12th Oct 1911 | Box 75 \ 4 scan0012 | |
| Recommendation to fit coconut mats over the front floorboards of all cars. | 4th Aug 1910 | Box 75 \ 4 scan0013 | |
| Testing the temperature of floorboards and modifications made. | 29th Dec 1911 | Box 75 \ 4 scan0014 | |
| Requesting a drawing for isolating and ventilating floorboards to make them cooler. | 28th Sep 1911 | Box 75 \ 4 scan0015 | |
| List of suggestions to improve floorboard fitting and ventilation for a specific vehicle. | 19th Oct 1911 | Box 75 \ 4 scan0016 | |
| Meeting minutes discussing the heating of front seats, ventilation of floorboards, and car ventilators. | 25th Oct 1911 | Box 75 \ 4 scan0017 | |
| Meeting minutes discussing ventilators on dashboards, gas-tight floor boards, and ventilation of front seats. | 15th Nov 1911 | Box 75 \ 4 scan0018 | |
| Meeting minutes discussing vehicle heating and ventilation systems. | 15th Nov 1911 | Box 75 \ 4 scan0019 | |
| Meeting minutes discussing the heating and ventilation of the front compartment, including new ventilator designs. | 29th Nov 1911 | Box 75 \ 4 scan0020 | |
| Committee meeting minutes discussing heated front seats and the design of gas-tight floorboards. | 1st Dec 1911 | Box 75 \ 4 scan0021 | |
| Meeting minutes discussing methods for reducing heat in the front seats and floorboards. | 19th Dec 1911 | Box 75 \ 4 scan0022 | |
| Committee meeting minutes discussing the design of front seat heating and ventilation schemes. | 27th Dec 1911 | Box 75 \ 4 scan0023 | |
| Committee meeting discussion regarding the heating of front seats and floorboards in the driver's seat. | 29th Dec 1911 | Box 75 \ 4 scan0024 | |
| Floorboard temperature test comparing results with open and closed panels. | 29th Sep 1910 | Box 75 \ 4 scan0025 | |
| | | | |
