| Description | Date | Identifier | |
| Solutions for chunking and slack in the Ph.III rear axle differential. | 28th Feb 1936 | Box 92 \ 5 scan0047 | |
| Blueprint detailing roller bearings for a rear axle differential thrust washer. | 6th Mar 1936 | Box 92 \ 5 scan0048 | |
| Design and assembly methods for the strengthened rear axle centre casing. | 6th Mar 1936 | Box 92 \ 5 scan0049 | |
| Modifications to the brake linkage on the back axle and the rebound strap. | 3rd Mar 1936 | Box 92 \ 5 scan0050 | |
| Increased radius on the Back Axle Bevel Pinion for the Phantom III. | 18th May 1936 | Box 92 \ 5 scan0051 | |
| Increased radius on the back axle bevel pinion for the Phantom III. | 18th Mar 1936 | Box 92 \ 5 scan0052 | |
| Scrap values for strengthened rear axle box components for various chassis. | 21th Apr 1936 | Box 92 \ 5 scan0053 | |
| Requesting the testing of a strengthened axle centre casing for the Phantom III chassis. | 23th Apr 1936 | Box 92 \ 5 scan0054 | |
| Potential of fitting an over-drive system, similar to those in American cars, to Bentley and Continental Phantom III models. | 2nd May 1936 | Box 92 \ 5 scan0055 | |
| Implementation of an overdrive, comparing an axle-based system with converting the existing gearbox. | 13th May 1936 | Box 92 \ 5 scan0056 | |
| Instruction to hold work on the Phantom III rear axle differential with enlarged thrust surfaces. | 18th May 1936 | Box 92 \ 5 scan0057 | |
| Instructions for modifications to the back axle differential casing for the Phantom III and 25/30 models. | 20th May 1938 | Box 92 \ 5 scan0058 | |
| Requesting accelerated failure testing on Bell's rig for various Phantom III Differential parts. | 27th May 1936 | Box 92 \ 5 scan0059 | |
| Further modifications to strengthen the differential casing for the Phantom III. | 30th May 1936 | Box 92 \ 5 scan0060 | |
| Proposing a modification to the Phantom III back axle to increase pinion clearance and prevent seizure. | 4th Jun 1936 | Box 92 \ 5 scan0061 | |
| Modification to the Phantom III back axle to increase clearances after an oil retaining screw seized during testing. | 4th Jun 1936 | Box 92 \ 5 scan0062 | |
| Arranging an interview about Bentley Axle oil seals with a representative from Super Oil Seal Manufacturing Co. | 9th Jun 1936 | Box 92 \ 5 scan0063 | |
| Rear axle No. 30-EX after a dynamometer test, detailing parts fitted, test conditions, and results. | 10th Jun 1936 | Box 92 \ 5 scan0064 | |
| Inspection report detailing twisted driving shafts, bearing end play, and differential case checks. | 10th Jun 1936 | Box 92 \ 5 scan0065 | |
| Blueprint detailing fouling and wear on a 30 Ex Rear Axle after dynamometer testing. | 4th Jun 1936 | Box 92 \ 5 scan0066 | |
| Fatigue test results for differential housing failures. | 13th Jun 1936 | Box 92 \ 5 scan0067 | |
| Fatigue test report on Phantom III differential housings. | 11th Jun 1936 | Box 92 \ 5 scan0068 | |
| Proposing a rig test to determine if lightening and lubricating holes in the Phantom III differential casing are necessary. | 15th Jun 1936 | Box 92 \ 5 scan0069 | |
| Comparison of chassis weights for a strengthened rear axle centre casing. | 18th Jun 1936 | Box 92 \ 5 scan0070 | |
| Production and testing of a new differential housing design following failures. | 19th Jun 1936 | Box 92 \ 5 scan0071 | |
| Cost information for machining splines, a wheel driver, and internal hub splines. | 31th Jul 1936 | Box 92 \ 5 scan0072 | |
| Factory costs for various automotive components. | 31th Jul 1936 | Box 92 \ 5 scan0073 | |
| Arrangement drawing for the Spectre rear axle and its cost considerations against other models. | 21th Aug 1936 | Box 92 \ 5 scan0074 | |
| Modifications to the Phantom III back axle to address wear and knocks. | 26th Aug 1936 | Box 92 \ 5 scan0075 | |
| Stone damage to the Phantom III back axle after a 10,000-mile test and proposing protective guards. | 7th Sep 1936 | Box 92 \ 5 scan0076 | |
| Two types of improved chrome leather oil seals from George Angus & Co. for the Phantom III and 25/30 models. | 15th Sep 1936 | Box 92 \ 5 scan0077 | |
| Test report on a Phantom III rear axle after dynamometer and road testing. | 17th Sep 1936 | Box 92 \ 5 scan0078 | |
| Inspection report on rear axle, brake, and hub components. | 17th Sep 1936 | Box 92 \ 5 scan0079 | |
| The condition and re-assembly of rear hubs, brake drums, and road wheels. | 17th Sep 1936 | Box 92 \ 5 scan0080 | |
| Blueprint showing the distortion of near side carrier plates after a dynamometer test. | 17th Sep 1936 | Box 92 \ 5 scan0081 | |
| Blueprint of a centre casing after a dynamometer test, noting misalignment measurements. | 17th Sep 1936 | Box 92 \ 5 scan0082 | |
| Blueprint for an adaptor tool to facilitate the assembly of Phantom III rear hubs. | 17th Sep 1938 | Box 92 \ 5 scan0083 | |
| 'Gaco' oil seals produced by Messrs. George Angus & Co. Ltd. | 30th Sep 1936 | Box 92 \ 5 scan0084 | |
| Dynamometer testing on the Phantom III axle and gearbox to prevent gears coming out of mesh. | 7th Oct 1936 | Box 92 \ 5 scan0085 | |
| Dynamometer endurance testing of a Phantom III axle and gearbox. | 7th Oct 1936 | Box 92 \ 5 scan0086 | |
| Test report on component modifications and a 'Concertina' 3rd speed coupling. | 7th Oct 1936 | Box 92 \ 5 scan0087 | |
| Results of deflection tests on rear axle half shafts for the Phantom III and Bentley models. | 10th Oct 1936 | Box 92 \ 5 scan0088 | |
| Axle shaft restoring load, wheel drivers, and a recommendation for a new driver design. | 10th Oct 1936 | Box 92 \ 5 scan0089 | |
| Rear axle deflection, cancelling a design, and requesting further experiments. | 13th Oct 1936 | Box 92 \ 5 scan0090 | |
| Further deflection measurements for a P.3 rear axle. | 30th Oct 1936 | Box 92 \ 5 scan0091 | |
| Blueprint graph showing P3 rear axle deflections under varying loads. | 27th Oct 1936 | Box 92 \ 5 scan0092 | |
| Requesting to fit stiffer rear axle half shafts and examine the offside rear brake drum. | 13th Nov 1936 | Box 92 \ 5 scan0093 | |
| On Phantom III modifications, discussing mileage and issues with old type differential boxes. | 23th Nov 1936 | Box 92 \ 5 scan0094 | |
| List of mileages recorded for old type differential boxes on various experimental cars. | 23th Nov 1936 | Box 92 \ 5 scan0095 | |
| Prioritization and timing of modifications for the Phantom III, particularly regarding differential boxes. | 21th Nov 1936 | Box 92 \ 5 scan0096 | |
| Urgent need to modify the back axles of early Phantom III cars to prevent failure. | 20th Nov 1936 | Box 92 \ 5 scan0097 | |
| Testing of Phantom III stiff rear axle shafts and a request to modify them to be less stiff. | 30th Nov 1936 | Box 92 \ 5 scan0098 | |
| Requesting the fitting shop to replace a failed bearing and modify the oil way on the pinion assembly for car 30 EX. | 11th Dec 1936 | Box 92 \ 5 scan0099 | |
| Proposals to increase rear axle stiffness for Phantom III, Wraith, and Bentley models. | 19th Dec 1936 | Box 92 \ 5 scan0100 | |
| Request to prepare a standard differential and axle shaft assembly for a Phantom III rear axle. | 30th Dec 1936 | Box 92 \ 5 scan0101 | |
| Request to remove the stiff rear axle shafts and replace them with the original standard ones. | 4th Jan 1936 | Box 92 \ 5 scan0102 | |
| Options for stiffer axle shafts for the Phantom III rear axle. | 21th Dec 1936 | Box 92 \ 5 scan0103 | |
| Requesting to swap the rear axles between cars 36-EX and 37-EX. | 14th Jan 1937 | Box 92 \ 5 scan0104 | |
| The production of three sets of stiff axle pieces for the Phantom III rear axle. | 17th Feb 1937 | Box 92 \ 5 scan0105 | |
| Requesting the production lead time for a Phantom III stiff rear axle. | 17th Feb 1937 | Box 92 \ 5 scan0106 | |
| The production and implementation status of the Phantom III rear axle. | 23th Feb 1937 | Box 92 \ 5 scan0107 | |
| The failure of Phantom III rear rubber buffers due to tubular rivets and tests on alternative fastening methods. | 3rd Mar 1937 | Box 92 \ 5 scan0108 | |
| Destruction tests of rear axle buffers, showing results of different riveting and bolting methods. | 3rd Mar 1930 | Box 92 \ 5 scan0109 | |
| Request for the cost of renewing the half shafts in a Phantom III rear axle following a telephone conversation. | 3rd Mar 1937 | Box 92 \ 5 scan0110 | |
| Cost estimate for changing the rear axle shafts on a Phantom III car. | 4th Mar 1937 | Box 92 \ 5 scan0111 | |
| Agreement to replace a tubular rivet with a 2-BA bolt on the Phantom III Rear Rubber Buffer. | 8th Mar 1937 | Box 92 \ 5 scan0112 | |
| The cost breakdown for fitting stiffened rear axle shafts to the Phantom III chassis. | 2nd Apr 1937 | Box 92 \ 5 scan0113 | |
| Fatigue tests of proposed stiffer axle shafts for the Phantom III, recommending their production. | 19th Apr 1937 | Box 92 \ 5 scan0114 | |
| Joggling test results for Phantom III rear axle shafts. | 19th Apr 1937 | Box 92 \ 5 scan0115 | |
| Photographic comparison of standard and stiffened Phantom III rear axle shafts after joggling rig tests. | 20th Apr 1937 | Box 92 \ 5 scan0116 | |
| Report regarding a failed O.S.R. Hub Outer Ball Race on a 35-EX Phantom III, which was returned for examination. | 20th Apr 1937 | Box 92 \ 5 scan0117 | |
| Modifications to the Phantom III rear axle, specifically the pinion thrust bearing. | 24th Apr 1937 | Box 92 \ 5 scan0118 | |
| Letter from C.C. Wakefield & Co. detailing the results of an examination of a deposit from a gearbox. | 27th Apr 1937 | Box 92 \ 5 scan0119 | |
| Analysis of mineral matter found in oil, detailing its composition and potential sources of contamination. | 27th Apr 1937 | Box 92 \ 5 scan0120 | |
| Three proposed schemes for the Phantom III back axle hub driving dog. | 4th May 1937 | Box 92 \ 5 scan0121 | |
| Fitting different rear axle schemes to a Phantom III car for testing. | 6th May 1937 | Box 92 \ 5 scan0122 | |
| Suggestion to modify the Phantom III back axle shafts by increasing bearing surface diameter for additional clearance. | 14th May 1937 | Box 92 \ 5 scan0123 | |
| The condition of a rear axle after excessive dynamometer test bed work. | 13th May 1937 | Box 92 \ 5 scan0124 | |
| Inspection report detailing wear and damage on various vehicle components. | 13th May 1937 | Box 92 \ 5 scan0125 | |
| Inspection report detailing wear and failure of oil seals and gears. | 13th May 1937 | Box 92 \ 5 scan0126 | |
| Standardisation of stiffer rear axle shafts for the Phantom III to improve the clutch. | 27th May 1937 | Box 92 \ 5 scan0127 | |
| Estimated cost of new tools and production schedule for the 'C' Series chassis. | 4th Jun 1937 | Box 92 \ 5 scan0128 | |
| Tests on rear axle pinion bearings, analyzing deflection under various load and torque conditions. | 4th Jun 1937 | Box 92 \ 5 scan0129 | |
| Test results for rear axle pinion bearings on Phantom III and Bentley GB 2035 models. | 31th May 1937 | Box 92 \ 5 scan0130 | |
| Diagram illustrating the test setup for rear axle pinion bearings. | 1st Jun 1937 | Box 92 \ 5 scan0131 | |
| Recommendation regarding the replacement of mild steel differential boxes on Phantom III cars. | 10th Jun 1937 | Box 92 \ 5 scan0132 | |
| Instructing the swapping of rear axles between experimental cars 33-EX and 36-EX. | 14th Jun 1937 | Box 92 \ 5 scan0133 | |
| The Phantom III Rear Axle, confirming a recommendation not to change a part on any further cars. | 16th Jun 1937 | Box 92 \ 5 scan0134 | |
| The preparation of a rear axle fitted with light type axle shafts for car 36-EX. | 21th Jun 1937 | Box 92 \ 5 scan0135 | |
| Requesting new 'Perfect' oil seals for the Phantom III rear axle with stiff half shafts. | 5th Jul 1937 | Box 92 \ 5 scan0136 | |
| Violent clonk in the transmission and subsequent failure of the rear axle on a Phantom III test car. | 10th Jul 1937 | Box 92 \ 5 scan0137 | |
| Fitting of a new rear axle on a Phantom III and listing the replaced parts. | 30th Jul 1937 | Box 92 \ 5 scan0138 | |
| The progress of a rear axle job for a Phantom III at the Paris Depot. | 3rd Aug 1937 | Box 92 \ 5 scan0139 | |
| Recurring rear axle oil seal leaks on Phantom III chassis 32-EX and 35-EX, possibly caused by high temperatures after fast runs. | 4th Aug 1937 | Box 92 \ 5 scan0140 | |
| Trouble with rear axle buffers and a proposal to fit Packard-type buffers. | 10th Aug 1937 | Box 92 \ 5 scan0141 | |
| Request for six 'Gaco' material oil seals with specified dimensions and a query about their temperature resistance. | 10th Aug 1937 | Box 92 \ 5 scan0142 | |
| Letter from George Angus & Co Ltd regarding the inability to supply a standard oil seal and offering an alternative or custom design. | 12th Aug 1937 | Box 92 \ 5 scan0143 | |
| Letter to a supplier clarifying a dimensional error on an order for oil seals and requesting the correct parts. | 13th Aug 1937 | Box 92 \ 5 scan0144 | |
| Letter to The Gleason Works regarding a modification to the pinion and crown wheel for a 12-cylinder car. | 25th Aug 1937 | Box 92 \ 5 scan0145 | |
| Wheel driver failure on the PH.III rear axle and a recommendation for a material change. | 28th Aug 1937 | Box 92 \ 5 scan0146 | |
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