| Description | Date | Identifier | |
| Graph comparing the performance of three different throttle governor schemes for the 40/50 model. | 26th Oct 1926 | Box 66a \ 3 scan0084 | |
| Suggesting the removal of the throttle governor from a London-based Phantom car for testing purposes. | 26th Oct 1926 | Box 66a \ 3 scan0085 | |
| Requesting a mechanic be sent to London to remove the throttle governor from car 103-MG for a test. | 27th Oct 1926 | Box 66a \ 3 scan0086 | |
| Arranging a vehicle alteration for a Phantom model and a subsequent test drive. | 29th Oct 1926 | Box 66a \ 3 scan0087 | |
| Options for improving the Phantom throttle control and related running issues. | 2nd Nov 1926 | Box 66a \ 3 scan0088 | |
| Improvements and addressing complaints regarding the Phantom model's throttle, steering, and suspension. | 13th Nov 1926 | Box 66a \ 3 scan0089 | |
| Explosions in the silencer and the comparison between governor throttle control and positive hand-controlled throttle. | 15th Nov 1926 | Box 66a \ 3 scan0090 | |
| Technical analysis of explosions in the silencer caused by incorrect throttle and governor adjustments on a specific car (103-MC). | 7th Oct 1926 | Box 66a \ 3 scan0091 | |
| Report page discussing engine explosions and comparing the Phantom and Silver Ghost models. | 7th Oct 1926 | Box 66a \ 3 scan0092 | |
| Continuation page of a report comparing performance to the Phantom and mentioning a roller bearing throttle. | 16th Nov 1926 | Box 66a \ 3 scan0093 | |
| Reducing the governor control lag on the Phantom throttle by using roller bearings. | 16th Nov 1926 | Box 66a \ 3 scan0094 | |
| Improvements to the Phantom throttle control and a proposal for new 20 HP bonnet louvres. | 18th Nov 1926 | Box 66a \ 3 scan0095 | |
| Graph showing governor lag for Chassis 8 EX, plotting engine RPM against notches on a quadrant. | 27th Oct 1926 | Box 66a \ 3 scan0096 | |
| Graph showing governor lag for a standard production Chassis 46 N.C, plotting engine RPM against notches on quadrant. | 27th Oct 1926 | Box 66a \ 3 scan0097 | |
| Comparing the controllability and performance of the Phantom's throttle governor against standard and other models like the Silver Ghost. | 19th Nov 1926 | Box 66a \ 3 scan0098 | |
| Recommendation to fit roller bearings to the throttle and ball bearings to the governor shaft to improve control. | 19th Nov 1926 | Box 66a \ 3 scan0099 | |
| Recommendations on throttle and governor shaft improvements for new car production and rectifying complaints. | 27th Oct 1926 | Box 66a \ 3 scan0100 | |
| Graph showing governor lag for a standard production Chassis 46 N.C, plotting engine R.P.M. against notches on a quadrant. | 27th Oct 1926 | Box 66a \ 3 scan0101 | |
| Graph plotting engine R.P.M. against notches on a quadrant, illustrating governor lag for chassis 8EX. | 27th Oct 1926 | Box 66a \ 3 scan0102 | |
| Graph plotting engine R.P.M. against notches on a quadrant, comparing governor lag between a roller bearing throttle and a standard governor. | 27th Oct 1926 | Box 66a \ 3 scan0103 | |
| Graph showing governor lag against quadrant notches for chassis 8EX with a standard carburettor. | 27th Oct 1926 | Box 66a \ 3 scan0104 | |
| Graph plotting engine RPM against quadrant notches to show governor lag for a Standard Silver Ghost. | 30th Nov 1926 | Box 66a \ 3 scan0105 | |
| Recommended alterations for the Phantom model to address customer complaints. | 30th Nov 1926 | Box 66a \ 3 scan0106 | |
| Use of roller and ball bearings for the Phantom throttle governor. | 22th Nov 1926 | Box 66a \ 3 scan0107 | |
| Returning experimental parts for cutting out the throttle governor on the 'New Phantom' trials car. | 18th Nov 1926 | Box 66a \ 3 scan0108 | |
| Standardisation of roller bearings to the carburettor throttle to improve controls on the Phantom. | 18th Nov 1926 | Box 66a \ 3 scan0109 | |
| The performance of ball bearings on the governor short shaft after 3,500 miles of testing. | 14th Dec 1926 | Box 66a \ 3 scan0110 | |
| Agreeing to standardization proposals for the C.2. Series, including modifications to the throttle and governor. | 14th Dec 1926 | Box 66a \ 3 scan0111 | |
| Standardisation of ball bearings on the governor short shaft. | 4th Dec 1926 | Box 66a \ 3 scan0112 | |
| Standardisation of a single arm throttle governor control lever with a larger diameter roller. | 15th Dec 1926 | Box 66a \ 3 scan0113 | |
| Sticking and jamming issue with the Phantom throttle. | 5th Mar 1927 | Box 66a \ 3 scan0114 | |
| Request to fit a heat shield to the silencer of 8-EX and to borrow a Phantom throttle governor casing for testing. | 14th May 1927 | Box 66a \ 3 scan0115 | |
| The cooling performance of the EAC engine radiator. | 31th Mar 1925 | Box 66a \ 3 scan0116 | |
| Comparing the cooling efficiency of a new broad-bladed fan versus a narrow-bladed fan. | 25th Sep 1924 | Box 66a \ 3 scan0117 | |
| Comparing water pump delivery and temperatures for the EAC 'V' series and 40/50 cars. | 1st Mar 1925 | Box 66a \ 3 scan0118 | |
| Performance graph comparing the thrust and power of a standard 40/50 fan against an experimental E.A.C. fan at various engine speeds. | 27th Mar 1925 | Box 66a \ 3 scan0119 | |
| Secret memo regarding testing the deletion of leather washers from the water pump fixing. | 23th Oct 1924 | Box 66a \ 3 scan0120 | |
| Proposed modification for the lubrication of a water pump coupling. | 3rd Mar 1925 | Box 66a \ 3 scan0121 | |
| Bar chart comparing the cooling efficiencies of E.A.C. and 40/50 models at 30 and 40 MPH. | 26th Mar 1925 | Box 66a \ 3 scan0122 | |
| Complaints and potential improvements for the water pump gland packing and lubrication. | 23th Mar 1926 | Box 66a \ 3 scan0123 | |
| Proposal to experiment with cork-based water pump glands for 20 HP & 40/50 HP engines to solve leaking issues. | 4th Jun 1926 | Box 66a \ 3 scan0124 | |
| Two cases of water pump drives seizing on New Phantom cars during final testing. | 10th Aug 1926 | Box 66a \ 3 scan0125 | |
| Failures in Phantom Water Pumps due to a design flaw in the bearing lubrication system and the proposed solution. | 3rd Sep 1926 | Box 66a \ 3 scan0126 | |
| Test report on a water pump from a test car after 14,000 miles. | 20th Sep 1926 | Box 66a \ 3 scan0127 | |
| Issues with a coupling, impeller, and bearings, including proposed solutions and theories on the root causes. | 20th Sep 1926 | Box 66a \ 3 scan0128 | |
| Performance of cork gland packings and proposing further experimentation. | 12th Oct 1926 | Box 66a \ 3 scan0129 | |
| Requesting a dozen soft packings from Mr. Brock for further testing after a successful initial trial. | 8th Nov 1926 | Box 66a \ 3 scan0130 | |
| Standardisation and dimensional reduction of spherical unions. | 24th Dec 1926 | Box 66a \ 3 scan0131 | |
| Failure of the wooden thrust piece in the Phantom water pump and proposing a metal replacement. | 8th Nov 1927 | Box 66a \ 3 scan0132 | |
| The procurement of a complete water pump by listing its individual piece numbers. | 26th Jan 1927 | Box 66a \ 3 scan0133 | |
| Performance of spring-loaded asbestos glands and the potential for using lubricated alternatives. | 1st Mar 1927 | Box 66a \ 3 scan0134 | |
| Tests and improvements for water pump glands on 20 HP and 40/50 HP chassis. | 21th Mar 1927 | Box 66a \ 3 scan0135 | |
| Blueprint detailing a modification for a 40/50 water pump, specifically for spring-loaded asbestos rope glands. | 21th Mar 1927 | Box 66a \ 3 scan0136 | |
| Test report on a 40/50 water pump, comparing shaft wear from graphite-impregnated versus plain asbestos rope glands. | 7th Apr 1927 | Box 66a \ 3 scan0137 | |
| Procedure and test results for creating asbestos rope glands for a 40/50 HP water pump. | 29th Jan 1922 | Box 66a \ 3 scan0138 | |
| Test report on various types of water pump glands and packings including lead-wool and asbestos. | 29th Jan 1922 | Box 66a \ 3 scan0139 | |
| Test report on gland materials and lubricants for hydraulic shock absorbers. | 24th Sep 1931 | Box 66a \ 3 scan0140 | |
| Endurance test report on a pump, detailing component wear and performance over multiple runs. | 29th Aug 1935 | Box 66a \ 3 scan0141 | |
| Diagram showing the assembly of asbestos rope glands for a 40/50 water pump. | 9th May 1927 | Box 66a \ 3 scan0142 | |
| Test results and proposed alterations for water pump glands. | 9th May 1927 | Box 66a \ 3 scan0143 | |
| With a diagram suggesting improvements to prevent a water leak past a bush and gland. | 1st May 1927 | Box 66a \ 3 scan0144 | |
| Request to fit a new water pump and magnesium pedestal pistons with studs to a car. | 1st May 1927 | Box 66a \ 3 scan0145 | |
| Quarterly complaints regarding water pump failures and hot spot pipe issues. | 1st Mar 1927 | Box 66a \ 3 scan0146 | |
| Standardisation of the 40/50 water pump gland packing to obviate leaks and adjustment. | 14th Jul 1927 | Box 66a \ 3 scan0147 | |
| Costs and timeline for fitting a new standardised chassis part. | 1st Oct 1927 | Box 66a \ 3 scan0148 | |
| Recommendations for treating spring-loaded water pump glands to prevent the adjusting nut vibrating loose at high speeds. | 1st Nov 1927 | Box 66a \ 3 scan0149 | |
| Drawing of a gland nut locking ring for a 40/50 water pump. | 4th Nov 1927 | Box 66a \ 3 scan0150 | |
| Blueprint detailing a modification to the Gland-Nut Locking Scheme for a 40/50 Water Pump. | 4th Nov 1927 | Box 66a \ 3 scan0151 | |
| Blueprint of a locking device for a spring-loaded pump gland nut. | 4th Nov 1927 | Box 66a \ 3 scan0152 | |
| Blueprint showing a modification to gland nut E70355 for a 40/50 water pump. | 4th Nov 1927 | Box 66a \ 3 scan0153 | |
| Recommended procedure for adjusting and securing water pump glands. | 4th Nov 1927 | Box 66a \ 3 scan0154 | |
| Potential improvements for 40/50 HP water pumps, focusing on the friction drive and glands. | 9th Jan 1928 | Box 66a \ 3 scan0155 | |
| Results of a tested device and suggesting a material change for a thrust piece. | 16th Jan 1928 | Box 66a \ 3 scan0156 | |
| Proposed design improvements for the EAC.10 engine's water pump, referencing blueprints LeC.2504 and 2507. | 16th Jan 1928 | Box 66a \ 3 scan0157 | |
| Proposal to continue the examination of Phantom water pumps due to a high failure rate of seizing spindle bearings. | 29th Mar 1928 | Box 66a \ 3 scan0158 | |
| Test results for a chromium-plated water pump spindle, noting its improvement over the Staybright spindle. | 27th Apr 1928 | Box 66a \ 3 scan0159 | |
| Experimental use of nitrate steel for water pump shafts and brake drums. | 6th Nov 1928 | Box 66a \ 3 scan0160 | |
| Dispatch of drawings for oil pump modifications and wheelcase oil jets for EAC engines. | 13th Dec 1924 | Box 66a \ 3 scan0161 | |
| The oil pump and drive for Phantom Sports models, referencing drawing LeC. 2468. | 10th Oct 1927 | Box 66a \ 3 scan0162 | |
| Letter discussing the development of special oil pump gears for the Phantom model to reduce noise and improve efficiency. | 11th Nov 1927 | Box 66a \ 3 scan0163 | |
| Performance comparison test report of a Feuerheerd oil pump against a standard RR pump. | 22th Dec 1927 | Box 66a \ 3 scan0164 | |
| Comparison of a Feuerheerd pump against an RR pump, noting weight, noise, and performance issues under high pressure. | 5th Jan 1928 | Box 66a \ 3 scan0165 | |
| Modification to the F.2 series crankcase to stiffen the case around the oil pump section. | 5th Jan 1928 | Box 66a \ 3 scan0166 | |
| Cause, symptoms, and potential cures for an elusive squeak on a Phantom chassis. | 22th Oct 1928 | Box 66a \ 3 scan0167 | |
| The cause and cure for an elusive squeak or note in the chassis, identified as originating from the oil pump gears. | 30th Oct 1928 | Box 66a \ 3 scan0168 | |
| Modifications to the Sports Phantom wheelcase, gears, and camshaft. | 8th Oct 1927 | Box 66a \ 3 scan0169 | |
| Sending drawing LeC. 2478, which shows the vacuum pump for the petrol feed and wheelcase details. | 28th Oct 1927 | Box 66a \ 3 scan0170 | |
| The placement of the drive for the revolution counter. | 11th Nov 1927 | Box 66a \ 3 scan0171 | |
| Adoption of Bostock & Bramley's parallel worm gear design over the Henley type. | 8th Apr 1928 | Box 66a \ 3 scan0172 | |
| Testing a new material named 'Corronil' as a cheaper alternative to Monel Metal for water tubes in EAC.II engines. | 7th Oct 1924 | Box 66a \ 3 scan0173 | |
| Difficulty lining up Top Water Connections and proposing standardisation or using parts from an older scheme. | 10th Jun 1925 | Box 66a \ 3 scan0174 | |
| Requesting action to supply Water Joint Clips for the New Phantom Chassis to Cricklewood. | 1st Jan 1926 | Box 66a \ 3 scan0175 | |
| Replacing unsatisfactory water-joint clips on a Phantom chassis to prevent water loss. | 4th Jan 1926 | Box 66a \ 3 scan0176 | |
| Issues with leaking water joint clips on the New Phantom chassis and proposed remedies. | 6th Jan 1926 | Box 66a \ 3 scan0177 | |
| Difficulties with sourcing and testing different types of clips for a vehicle. | 6th Jan 1926 | Box 66a \ 3 scan0178 | |
| The use of aluminium washers in place of fibre washers for drain pipe unions. | 8th Mar 1926 | Box 66a \ 3 scan0179 | |
| Standardization of spherical unions and a material fault found in smaller sizes. | 6th Jun 1925 | Box 66a \ 3 scan0180 | |
| Design revisions, material specifications, and testing for spherical seated unions. | 19th Dec 1925 | Box 66a \ 3 scan0181 | |
| Substitution of fibre washers with soft aluminium washers. | 1st Mar 1926 | Box 66a \ 3 scan0182 | |
| Standardisation document for Jubilee clips for rubber joints, replacing the previous clip design. | 18th Nov 1926 | Box 66a \ 3 scan0183 | |
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