| Description | Date | Identifier | |
| Print of an experimental Phantom III air intake silencer. | 16th Jan 1936 | Box 93 \ 2 scan0129 | |
| Poor performance during road tests of the Phantom III Induction System with a Stromberg Carburettor. | 24th Jan 1936 | Box 93 \ 2 scan0130 | |
| Modifications to the Phantom III induction system to improve power output. | 24th Jan 1936 | Box 93 \ 2 scan0131 | |
| Performance graph comparing different induction systems on a Phantom III No. 9 unit with whitemetal bearings and full split pistons. | 22th Jan 1936 | Box 93 \ 2 scan0132 | |
| The testing and design of a Phantom III air silencer. | 7th Feb 1936 | Box 93 \ 2 scan0133 | |
| Modifications to the Phantom III's Duplex Stromberg downdraught induction system to improve power output. | 11th Feb 1936 | Box 93 \ 2 scan0134 | |
| Outstanding tests for the petrol drain and overflow vent pipe systems. | 11th Feb 1936 | Box 93 \ 2 scan0135 | |
| Test results for the Phantom III induction drain scheme under various petrol flow conditions. | 20th Feb 1936 | Box 93 \ 2 scan0136 | |
| Test report on carburettor modifications to cope with fuel flooding under various conditions. | 20th Feb 1936 | Box 93 \ 2 scan0137 | |
| Inefficiency of the Phantom III Air Silencer and its replacement. | 20th Feb 1936 | Box 93 \ 2 scan0138 | |
| List of modifications and points to be addressed for the Phantom III Carburetter. | 20th Feb 1936 | Box 93 \ 2 scan0139 | |
| Specification sheet detailing adjustments to pipe threads and control rod connections. | 20th Feb 1936 | Box 93 \ 2 scan0140 | |
| Modifications to the Phantom III Induction System's float chamber drain pipe. | 22th Feb 1936 | Box 93 \ 2 scan0141 | |
| Preliminary test results and fault analysis for a Phantom III Stromberg carburetter. | 24th Feb 1936 | Box 93 \ 2 scan0142 | |
| Modifications to the throttle and choke return springs to resolve operational issues. | 24th Feb 1936 | Box 93 \ 2 scan0143 | |
| Requesting the modification of two downdraught carburettors for Phantom III units. | 25th Feb 1936 | Box 93 \ 2 scan0144 | |
| Modifications to the Phantom III Air Silencer for production. | 25th Feb 1936 | Box 93 \ 2 scan0145 | |
| Requesting carburetter drawings to modify a Stromberg carburetter for a 10,000-mile test. | 27th Feb 1936 | Box 93 \ 2 scan0146 | |
| Modifications to the Phantom III carburetter. | 27th Feb 1936 | Box 93 \ 2 scan0147 | |
| Request to manufacture and fit a Ph.III Air Silencer to a 32-EX car, and to test an alternative 'Pot Scrubber' filter element. | 2nd Mar 1936 | Box 93 \ 2 scan0148 | |
| Modification to the Phantom III carburetter controls bracket. | 6th Mar 1936 | Box 93 \ 2 scan0149 | |
| Modifying the Phantom III Carburetter union body by increasing its bore size for improved petrol flow. | 9th Mar 1936 | Box 93 \ 2 scan0150 | |
| Developing a cheaper alternative to the Vokes air filter for carburetter air silencers. | 10th Mar 1936 | Box 93 \ 2 scan0151 | |
| Requesting the creation of 3 'Pot Scrubber' type air silencers for the Phantom III. | 12th Mar 1936 | Box 93 \ 2 scan0152 | |
| Order for various sized carburetter air filters for different engine models. | 19th Mar 1936 | Box 93 \ 2 scan0153 | |
| Results of tests to resolve petrol starvation on the Phantom III model at high speeds. | 6th Apr 1936 | Box 93 \ 2 scan0154 | |
| Tests at Brooklands on a Phantom III with a Stromberg carburetter to address a petrol starving issue. | 6th Apr 1936 | Box 93 \ 2 scan0155 | |
| Vehicle performance tests, detailing speeds, carburettor settings, and fuel/oil consumption. | 6th Apr 1936 | Box 93 \ 2 scan0156 | |
| Car's weight and performance issues with the top gear, engine, clutch, and crankcase breather. | 6th Apr 1936 | Box 93 \ 2 scan0157 | |
| Cover memo for a report on tests to resolve petrol starvation issues on the Phantom III model at high speeds. | 6th Apr 1936 | Box 93 \ 2 scan0158 | |
| Test report on resolving petrol starvation issues for the 36-EX Phantom III car at Brooklands. | 6th Apr 1936 | Box 93 \ 2 scan0159 | |
| Test results report detailing carburetter performance, lap speeds, and fuel/oil consumption. | 6th Apr 1936 | Box 93 \ 2 scan0160 | |
| Car weight and performance issues including top gear, engine period, clutch, and crankcase breather faults. | 6th Apr 1936 | Box 93 \ 2 scan0161 | |
| Petrol supply issues with American-bodied Stromberg Ph.III carburettors. | 9th Apr 1936 | Box 93 \ 2 scan0162 | |
| Modifications to the Phantom III Stromberg Carburetter to prevent starvation at high speeds. | 9th Apr 1936 | Box 93 \ 2 scan0163 | |
| Modifications to the Phantom III carburettor and petrol supply to overcome hot starting issues. | 9th Apr 1936 | Box 93 \ 2 scan0164 | |
| Instruction to make Ph.III Float Chamber lamp-post type Vents to drawing LeC.5137 for use on experimental car models. | 27th May 1936 | Box 93 \ 2 scan0165 | |
| Carburation tests for the 36-EX model, detailing modifications and performance results. | 3rd Jun 1936 | Box 93 \ 2 scan0166 | |
| Request to manufacture gland springs for the Phantom III carburetter to a specific design. | 5th Jun 1936 | Box 93 \ 2 scan0167 | |
| Request for a report on the cast breather for the Phantom III. | 10th Jun 1936 | Box 93 \ 2 scan0168 | |
| Confirming the passing of the cast breather for the Phantom III. | 12th Jun 1936 | Box 93 \ 2 scan0169 | |
| Investigation into petrol spray from the Phantom III float chamber vent pipe under braking and full bore flooding conditions. | 23th Jun 1936 | Box 93 \ 2 scan0170 | |
| Float chamber vent position tests and an attached sketch of a new vent pipe. | 23th Jun 1936 | Box 93 \ 2 scan0171 | |
| Recurring failures with the leather plunger on the accelerator pump of the Phantom III carburetter. | 21th Aug 1936 | Box 93 \ 2 scan0172 | |
| Modification to the Phantom III Air Silencer end plate fixing. | 22th Aug 1936 | Box 93 \ 2 scan0173 | |
| Testing of a lightened accelerator pump gland spring for the Phantom III carburetter. | 13th Oct 1936 | Box 93 \ 2 scan0174 | |
| The modification to remove screwdriver slots from the Phantom III carburetter's float chamber lid set screws. | 31th Oct 1936 | Box 93 \ 2 scan0175 | |
| Carburation issues, specifically loading up at low speeds and fuel level problems in the floatchamber. | 1st Dec 1936 | Box 93 \ 2 scan0176 | |
| Further carburation tests for the Phantom III model, focusing on fuel levels, pumps, and float mechanisms. | 14th Dec 1936 | Box 93 \ 2 scan0177 | |
| Petrol consumption tests for the 37-EX model with various carburettor settings. | 5th Jan 1937 | Box 93 \ 2 scan0178 | |
| Removing the outside spark plug on the Phantom engine and improving plug accessibility on the 4-port head. | 12th Jan 1937 | Box 93 \ 2 scan0179 | |
| Request to modify a Phantom III carburetter. | 3rd Mar 1937 | Box 93 \ 2 scan0180 | |
| Request to HPS to make six sets of parts for a stronger throttle spring (P.III). | 9th Mar 1937 | Box 93 \ 2 scan0181 | |
| Modifications to the Phantom III Induction System for improved breathing. | 13th Mar 1937 | Box 93 \ 2 scan0182 | |
| Request to manufacture 5 sets of parts for the conversion of Phantom III carburettors. | 18th Mar 1937 | Box 93 \ 2 scan0183 | |
| Sticking throttles on Phantom III carburetters and a plan for investigation. | 22th Mar 1937 | Box 93 \ 2 scan0184 | |
| Troubleshooting difficult starting issues on a Phantom III when hot. | 16th Apr 1937 | Box 93 \ 2 scan0185 | |
| Page 2 of a report detailing engine faults discovered during testing, with a summary of issues and suggested remedies. | 17th Apr 1937 | Box 93 \ 2 scan0186 | |
| Instruction to fit stronger throttle springs (LeC.5335) to specific Phantom III cars. | 17th Apr 1937 | Box 93 \ 2 scan0187 | |
| Modifications to the Phantom III Induction System for improved breathing. | 20th Apr 1937 | Box 93 \ 2 scan0188 | |
| Standardisation specification for the Stromberg carburettor EEC42, detailing new parts and alterations. | 20th Apr 1937 | Box 93 \ 2 scan0189 | |
| Note on a stop pillar modification and the standardisation of a stronger throttle spring with part number changes. | 15th May 1937 | Box 93 \ 2 scan0190 | |
| Investigation into the cause and cure for engine flooding on the Phantom III model. | 15th May 1937 | Box 93 \ 2 scan0191 | |
| Investigation into filter plug failures and material recommendations for Stromberg carburetters on various chassis. | 15th May 1937 | Box 93 \ 2 scan0192 | |
| Future arrangements for cleaning parts with a reamer and a preference for copper asbestos joint washers over aluminium. | 19th May 1937 | Box 93 \ 2 scan0193 | |
| Investigation into carburetter flooding on the Phantom III model, identifying the cause as aluminium filter bodies and mandating a switch to brass filters. | 19th May 1937 | Box 93 \ 2 scan0194 | |
| Investigation into the cause of carburetter flooding on the Phantom III model. | 20th May 1937 | Box 93 \ 2 scan0195 | |
| Petrol flow tests and test bed results for a filter gauze on a Phantom III engine. | 20th May 1937 | Box 93 \ 2 scan0196 | |
| Request for the return of a faulty Phantom III carburettor from Sir John Leys' car due to repeated flooding issues. | 24th May 1937 | Box 93 \ 2 scan0197 | |
| Carburetter flooding issue on the Phantom III model and standardising parts with the Wraith. | 25th May 1937 | Box 93 \ 2 scan0198 | |
| Recurring carburettor flooding issue in a Phantom III, detailing the investigation and findings. | 27th May 1937 | Box 93 \ 2 scan0199 | |
| Schemed drawing of the Phantom III carburetter from Strombergs. | 31th May 1937 | Box 93 \ 2 scan0200 | |
| Customer complaints of the Phantom III model flooding and failing to start on hills, requesting that instructions be written for the user manual. | 31th May 1937 | Box 93 \ 2 scan0201 | |
| Procedure for checking fuel level on a Phantom III to resolve issues with starting when hot. | 1st Jun 1937 | Box 93 \ 2 scan0202 | |
| Aluminium deposits in Phantom III carburettor floatchambers during assembly. | 30th Jun 1937 | Box 93 \ 2 scan0203 | |
| Changing the float needle seatings on Phantom III E.E.C. 42 carburettors to prevent flooding. | 7th Jul 1937 | Box 93 \ 2 scan0204 | |
| Request to manufacture parts for a Phantom III throttle spring bracket. | 12th Aug 1937 | Box 93 \ 2 scan0205 | |
| The suitability of existing press tools for a simplified Phantom III throttle spring bracket. | 13th Aug 1937 | Box 93 \ 2 scan0206 | |
| Standardisation of parts relating to the replacement of an over-stressed throttle spring for the Phantom III. | 18th Jun 1937 | Box 93 \ 2 scan0207 | |
| Cost estimation for new tools required for the 'E' Series chassis production. | 4th May 1934 | Box 93 \ 2 scan0208 | |
| Flooding carburetter on a Phantom III, chassis 3-BT-149, caused by a foreign object. | 9th Sep 1937 | Box 93 \ 2 scan0209 | |
| Specification change for the Phantom III carburettor throttle spring links following a failure. | 17th Sep 1937 | Box 93 \ 2 scan0210 | |
| Request to convert a Phantom III carburetter floatchamber back to standard specification. | 28th Sep 1937 | Box 93 \ 2 scan0211 | |
| Recommending alterations for the Phantom III carburetter. | 12th Nov 1937 | Box 93 \ 2 scan0212 | |
| Phantom III carburetter consumption tests following alterations to main jets and choke spring. | 16th Nov 1937 | Box 93 \ 2 scan0213 | |
| Comparison of fuel consumption increases at various speeds and gear settings for two vehicle models. | 16th Nov 1937 | Box 93 \ 2 scan0214 | |
| Modification instructions for the 30 HP carburettor to prevent exhaust spitting on overrun. | 18th Nov 1937 | Box 93 \ 2 scan0215 | |
| Modifications to the DC 42 idle system to cure spitting on the overrun. | 18th Nov 1937 | Box 93 \ 2 scan0216 | |
| Overstressing of the Phantom III carburetter throttle return spring and the specification for a proposed replacement. | 25th Nov 1937 | Box 93 \ 2 scan0217 | |
| Stress levels and alternatives for throttle return springs on Phantom III and 30 HP models. | 23th Dec 1937 | Box 93 \ 2 scan0218 | |
| Query regarding the necessity of returning Phantom III carburettors to the Zenith Co. for fitting weaker jets. | 18th Jan 1938 | Box 93 \ 2 scan0219 | |
| The standardisation of Phantom III carburetter jets and stronger choke torsion springs. | 18th Jan 1938 | Box 93 \ 2 scan0220 | |
| Road and bench tests for Phantom III petrol drain ball valves following complaints of carbonising. | 1st Feb 1938 | Box 93 \ 2 scan0221 | |
| Test results and details for various float chamber ball drain valve configurations and conversions. | 1st Feb 1938 | Box 93 \ 2 scan0222 | |
| Manufacturing of taper washers for Phantom III carburettors. | 2nd Feb 1938 | Box 93 \ 2 scan0223 | |
| Modification of trials Phantom III carburettors at Lillie Hall. | 7th Feb 1938 | Box 93 \ 2 scan0224 | |
| Carburettor main jet standardisation for the Phantom III. | 13th Feb 1938 | Box 93 \ 2 scan0225 | |
| Enclosing a blueprint of a Phantom III carburettor showing an altered petrol level. | 9th Mar 1938 | Box 93 \ 2 scan0226 | |
| Carburettor faults including flooding and sticking chokes on Phantom III and 30 HP models. | 14th Mar 1938 | Box 93 \ 2 scan0227 | |
| Carburettor petrol level causing difficulty starting on a steep incline. | 28th Mar 1938 | Box 93 \ 2 scan0228 | |
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