| Description | Date | Identifier | |
| Power curve results for an 8-litre engine intended for the Vulture project. | 11th Dec 1933 | Box 123 \ 3 scan0067 | |
| Graph comparing power tests between early and late valve timing on an 8.1 Litre Phantom engine. | 8th Dec 1938 | Box 123 \ 3 scan0068 | |
| Graph of 8.1 Litre Phantom power tests comparing 5.5:1 and 6:1 compression ratios. | 8th Dec 1938 | Box 123 \ 3 scan0069 | |
| Power test curves comparing two SU carburettors with a semi-expanding carburettor on an 8.1 Litre Phantom engine. | 8th Dec 1933 | Box 123 \ 3 scan0070 | |
| 'Vulture' Brakes, including diagrams and modifications to the servo gear and linkage. | 8th Dec 1933 | Box 123 \ 3 scan0071 | |
| Urgent internal memo requesting the order of Dunlop tyres and a wheel for the 'Vulture' chassis. | 11th Dec 1933 | Box 123 \ 3 scan0072 | |
| The procurement and distribution of instrument panel components for the Vulture project. | 12th Dec 1933 | Box 123 \ 3 scan0073 | |
| Comparing the performance of an 8-litre engine against a 7.6-litre unit. | 13th Dec 1933 | Box 123 \ 3 scan0074 | |
| Performance comparison graph between different Phantom and Vulture engine configurations. | 13th Dec 1933 | Box 123 \ 3 scan0075 | |
| The arrangement of the 'Vulture' petrol tank on the first chassis. | 13th Dec 1933 | Box 123 \ 3 scan0076 | |
| The J.3. Gearbox for the Vulture, detailing changes in gear ratios and specifications. | 14th Dec 1933 | Box 123 \ 3 scan0077 | |
| Design work and timeline for the Second Speed Synchro Mesh on the Phantom II. | 16th Dec 1933 | Box 123 \ 3 scan0078 | |
| Modifying Vulture steering joints with metal dust shields and standardizing components. | 18th Dec 1933 | Box 123 \ 3 scan0079 | |
| From Sg. to Hs. requesting an update on the Vulture chassis. | 21th Dec 1933 | Box 123 \ 3 scan0080 | |
| Modification of the 1st speed gear teeth for the J.3 Vulture gearbox. | 27th Dec 1933 | Box 123 \ 3 scan0081 | |
| Secret memo from EV to SG regarding delays in building the body for the Vulture project. | 29th Dec 1938 | Box 123 \ 3 scan0082 | |
| Necessity of a front axle bump test for the Vulture chassis before any speed testing. | 1st Jan 1934 | Box 123 \ 3 scan0083 | |
| Sg. to Wor. regarding the Vulture project, attaching a related memo. | 1st Jan 1934 | Box 123 \ 3 scan0084 | |
| Progress report and logistical plan for an experimental wide-frame 25-HP job, codenamed Vulture. | 2nd Jan 1934 | Box 123 \ 3 scan0085 | |
| Progress and scheduling for the Experimental Wide-frame 25 HP Vulture. | 2nd Jan 1934 | Box 123 \ 3 scan0086 | |
| Specifications for a Vulture speedometer and a P.100 headlamp order. | 3rd Jan 1934 | Box 123 \ 3 scan0087 | |
| Order for Vulture speedometers and tachometers, requesting details on drive ends and cable lengths. | 3rd Jan 1934 | Box 123 \ 3 scan0088 | |
| Letter to A.T. Speedometer Co. requesting a bespoke speedometer and tachometer for the 'Vulture' project. | 3rd Jan 1934 | Box 123 \ 3 scan0089 | |
| Letter to The A.T. Speedometer Co., Ltd. setting a delivery deadline. | 5th Jan 1934 | Box 123 \ 3 scan0090 | |
| Letter to S. Smith & Sons regarding the despatch of a 26-gallon petrol tank for calibrating a petrol gauge on an experimental car. | 4th Jan 1934 | Box 123 \ 3 scan0091 | |
| Memo inquiring about the hand overriding control for the shock absorbers on a Vulture car. | 2nd Jan 1934 | Box 123 \ 3 scan0092 | |
| Short message regarding the Vulture damper control being on the column. | 5th Jan 1934 | Box 123 \ 3 scan0093 | |
| The registration and chassis numbers for the 'Vulture' car project. | 5th Jan 1934 | Box 123 \ 3 scan0094 | |
| Reserving registration number RC.1681 for the Vulture, 29-EX, and arranging for it to be built into the body tail. | 8th Jan 1934 | Box 123 \ 3 scan0095 | |
| Confirming that the body for the Vulture project was leaving Park Ward's. | 10th Jan 1934 | Box 123 \ 3 scan0096 | |
| Confirming the agreement to number the Vulture Chassis as 29-EX. | 12th Jan 1934 | Box 123 \ 3 scan0097 | |
| Request for modifications to the spare wheel packing pieces and bolts, and to order a front number plate for Vulture Chassis 29-EX. | 12th Jan 1934 | Box 123 \ 3 scan0098 | |
| Request to produce a set of plungers for the Vulture Automatic Tappet Head with modified clearance and diameter. | 16th Jan 1934 | Box 123 \ 3 scan0099 | |
| Unit test report for the Vulture (1) engine, detailing initial issues and modifications for the automatic adjusting tappets. | 17th Jan 1934 | Box 123 \ 3 scan0100 | |
| Engine testing, detailing issues with oil feed, valve operation at high RPM, and cam/gear noise. | 17th Jan 1934 | Box 123 \ 3 scan0101 | |
| Power test report comparing a Vulture engine unit against a Phantom II, detailing differences in construction and performance. | 17th Jan 1934 | Box 123 \ 3 scan0102 | |
| Performance comparison graph for the Vulture and 8.1 Litre Phantom engines, showing BHP and MEP against RPM. | 12th Jan 1934 | Box 123 \ 3 scan0103 | |
| Proposed modification to the J.3. Gearbox to retain an interlock pin in the 1st and 2nd speed slider. | 18th Jan 1934 | Box 123 \ 3 scan0104 | |
| Request to test high rating valve springs on the Vulture cylinder head using 'R' engine valve springs. | 23th Jan 1934 | Box 123 \ 3 scan0105 | |
| Urgent request to manufacture a range of taper needles for the Semi-expanding carburetter used on the Vulture engine. | 23th Jan 1934 | Box 123 \ 3 scan0106 | |
| Road test report memo on the 'Vulture' car, detailing initial gearbox problems and overall performance. | 23th Jan 1934 | Box 123 \ 3 scan0107 | |
| Required modifications and repairs for Vulture Chassis 29-EX. | 23th Jan 1934 | Box 123 \ 3 scan0108 | |
| Petrol coming out of the breather pipe on the Vulture petrol tank and the addition of a baffle. | 23th Jan 1934 | Box 123 \ 3 scan0109 | |
| Vulture axle rating compared to Bentley and the philosophy of experimental component testing. | 24th Jan 1934 | Box 123 \ 3 scan0110 | |
| Vulture car's performance, a synchromesh failure, and arranging a meeting in London. | 24th Jan 1934 | Box 123 \ 3 scan0111 | |
| Request to fit a carburetter from chassis 27-EX and the latest floorboard isolation scheme to the Vulture 29-EX chassis. | 24th Jan 1934 | Box 123 \ 3 scan0112 | |
| Outlining the advantages of a new synchromesh 2nd speed gearbox design, for which a provisional patent is being sought. | 24th Jan 1934 | Box 123 \ 3 scan0113 | |
| Reverse gear arrangement, an actuating lever, and a related patent. | 24th Jan 1934 | Box 123 \ 3 scan0114 | |
| Petrol spillage from the Vulture petrol tank and the instruction to fit a baffle. | 25th Jan 1934 | Box 123 \ 3 scan0115 | |
| Calculations comparing the Vulture axle to the Bentley axle, and discussing instances of Bentley axle failures. | 29th Jan 1934 | Box 123 \ 3 scan0116 | |
| Comparative table of stress calculations for pivot and axle components on various car models. | 29th Jan 1934 | Box 123 \ 3 scan0117 | |
| Implementation of second-speed synchromesh across different car chassis and gearbox series. | 29th Jan 1934 | Box 123 \ 3 scan0118 | |
| The weights of Vulture, 40/50HP, and 20/25HP gearboxes and components. | 30th Jan 1934 | Box 123 \ 3 scan0119 | |
| The design progress and chassis alterations for a new second-speed synchromesh gearbox. | 30th Jan 1934 | Box 123 \ 3 scan0120 | |
| Internal order request for a pair of rear road springs for the Vulture 29-EX. | 1st Feb 1934 | Box 123 \ 3 scan0121 | |
| Proposed modifications to the P.2. Gearbox, including the R.H. and Central Change Gear. | 3rd Feb 1934 | Box 123 \ 3 scan0122 | |
| Spring plungers and roller bearings for a gearbox. | 3rd Feb 1934 | Box 123 \ 3 scan0123 | |
| Request to manufacture and fit a new type of plunger for Vulture Automatic Tappets. | 5th Feb 1934 | Box 123 \ 3 scan0124 | |
| Adaptability of the P.2 synchromesh second speed gearbox for central change. | 6th Feb 1934 | Box 123 \ 3 scan0125 | |
| Short typed memo discussing a potential run on a Vulture engine. | 1st Feb 1934 | Box 123 \ 3 scan0126 | |
| Modifications to the P.2 Gearbox and central change gear. | 6th Feb 1934 | Box 123 \ 3 scan0127 | |
| Requesting a modification to by-pass the main oil pressure relief valve on Vulture & 28-EX engines. | 7th Feb 1934 | Box 123 \ 3 scan0128 | |
| Request to fit new rear road springs to the Vulture 29-EX chassis, F.58355. | 14th Feb 1934 | Box 123 \ 3 scan0129 | |
| Bearing choices and alterations for the P.2. B.M. 2nd Gearbox. | 20th Feb 1934 | Box 123 \ 3 scan0130 | |
| The testing of Cadillac type automatic tappets for Vulture and Phantom cylinder heads. | 20th Feb 1934 | Box 123 \ 3 scan0131 | |
| Report page detailing issues and solutions related to a push-rod mechanism, including valve bounce, spring ratings, plunger clearance, and oil supply to tappets. | 20th Feb 1934 | Box 123 \ 3 scan0132 | |
| Technical report on issues and conclusions from testing tappet sets on a Phantom engine. | 20th Feb 1934 | Box 123 \ 3 scan0133 | |
| Suggestions regarding eccentric bearings, considering alternatives like needle, roller, knife-edge, or duralumin, and discussing the oil supply system. | 20th Feb 1934 | Box 123 \ 3 scan0134 | |
| Proposing a separate oil filter for rockers and a new rig for testing engine tappets. | 20th Feb 1934 | Box 123 \ 3 scan0135 | |
| Summary report suggesting alterations and re-designs for automatic tappets. | 27th Feb 1934 | Box 123 \ 3 scan0136 | |
| Modifications and details for the P.2. S.M. 2nd Gearbox casing. | 21th Feb 1934 | Box 123 \ 3 scan0137 | |
| Gearbox clearances and potential design modifications for the P.2. S.M. 2nd Gearbox. | 22th Feb 1934 | Box 123 \ 3 scan0138 | |
| Work instruction memo detailing modifications and examinations for the 29-EX Vulture car. | 22th Feb 1934 | Box 123 \ 3 scan0139 | |
| Postponement of a trip to Derby concerning the 'Vulture' project and arranging use of a Packard. | 26th Feb 1934 | Box 123 \ 3 scan0140 | |
| Wear and proposed modifications for the J.3. gearbox clutch retaining plate for the Vulture engine. | 27th Feb 1934 | Box 123 \ 3 scan0141 | |
| Internal memorandum regarding damage to the 2nd speed teeth on a Vulture gearbox. | 27th Feb 1934 | Box 123 \ 3 scan0142 | |
| Noisy and erratic synchromesh gearbox, proposing a new build and gear set. | 5th Mar 1934 | Box 123 \ 3 scan0143 | |
| Instruction to modify clutch cones for the J.3. Gearbox in the Vulture engine to prevent teeth crashing. | 6th Mar 1934 | Box 123 \ 3 scan0144 | |
| The issues and performance of a Synchromesh 2nd Speed Gearbox fitted to a Vulture chassis. | 7th Mar 1934 | Box 123 \ 3 scan0145 | |
| Gearbox issues, including a distorted thrust plate, noisy gears, and seizing pinions. | 7th May 1934 | Box 123 \ 3 scan0146 | |
| Requesting instructions for the J.3. Gearbox to use the same specifications as the standard 20/25 model. | 7th Mar 1934 | Box 123 \ 3 scan0147 | |
| Modifications to the 1st speed gears for the Vulture gearbox. | 7th Mar 1934 | Box 123 \ 3 scan0148 | |
| Issues with the Synchromesh 2nd speed Gearbox in the Vulture, including gear noise, crashing teeth, and potential improvements. | 8th Mar 1934 | Box 123 \ 3 scan0149 | |
| Alteration to the synchromesh cam angle for the 2nd Speed Synchromesh Gearbox No. 2. | 9th Mar 1934 | Box 123 \ 3 scan0150 | |
| Alterations for a second synchromesh gearbox for the J.3 car. | 12th Mar 1934 | Box 123 \ 3 scan0151 | |
| Modification notes regarding the eccentric adjustment sleeve position and the change lever bracket. | 12th Mar 1934 | Box 123 \ 3 scan0152 | |
| Hardness of gear tooth surfaces, comparing different gearboxes and the effects of specific oils. | 13th Mar 1934 | Box 123 \ 3 scan0153 | |
| Modifying petrol tanks with outside fillers and issues with breather pipes. | 14th Mar 1934 | Box 123 \ 3 scan0154 | |
| Engine starting issue with the 29-EX Vulture, caused by a dirty petrol filter and a malfunctioning petrol pump. | 13th Mar 1934 | Box 123 \ 3 scan0155 | |
| Pre-dynamometer test inspections and modifications for the Vulture 29-EX car. | 13th Mar 1934 | Box 123 \ 3 scan0156 | |
| Vulture petrol system failure caused by water contamination leading to the formation of Alum. Hydroxide. | 16th Mar 1934 | Box 123 \ 3 scan0157 | |
| Modifications to the J.3. Gearbox for the Vulture engine, specifically concerning cones and clutches. | 17th Mar 1934 | Box 123 \ 3 scan0158 | |
| Investigation into a Vulture model's petrol system failure, specifically the formation of a white jelly substance possibly caused by Ethyl petrol. | 19th Mar 1934 | Box 123 \ 3 scan0159 | |
| Request to manufacture another set of vent parts for a Vulture petrol tank filler due to a severe leak. | 21th Mar 1934 | Box 123 \ 3 scan0160 | |
| Request to have a set of valve springs made to specification Hs.1302 for a Vulture cylinder head. | 22th Mar 1934 | Box 123 \ 3 scan0161 | |
| Tests on corrosion in the Vulture petrol system. | 22th Mar 1934 | Box 123 \ 3 scan0162 | |
| Reduction in the thickness of the change gear lever for the J.3. gearbox. | 22th Mar 1934 | Box 123 \ 3 scan0163 | |
| Weight-saving modification to the J.3. gearbox 3rd motion shaft. | 24th Mar 1934 | Box 123 \ 3 scan0164 | |
| The results of a corrosion test on alum castings for the Vulture petrol system. | 22th Mar 1934 | Box 123 \ 3 scan0165 | |
| Failure of the Vulture Bevel Pinion and proposing design improvements or alternatives. | 6th Apr 1934 | Box 123 \ 3 scan0166 | |
| | | | |
