| Description | Date | Identifier | |
| 10,000-mile bench test report on a Mushroom type HT rotor. | 11th Jun 1928 | Box 61b \ 2 scan0091 | |
| Inspection results of a mushroom type ignition rotor after a 10,000-mile bench test. | 19th Jun 1928 | Box 61b \ 2 scan0092 | |
| Graph of the make ratio-speed curve for a new standard contact breaker. | 27th Jul 1928 | Box 61b \ 2 scan0093 | |
| Improvement of ignition distributor contact fingers for 40/50 and 20 HP chassis. | 15th Aug 1928 | Box 61b \ 2 scan0094 | |
| Note referencing previous correspondence on the mushroom type rotor. | 7th Sep 1928 | Box 61b \ 2 scan0095 | |
| Experimental record sheet for a mushroom type H.T. rotor for an H.T. battery ignition distributor. | 3rd Jul 1928 | Box 61b \ 2 scan0096 | |
| Electrical experimental record sheet for a Mushroom type H.T. Rotor. | 3rd Sep 1928 | Box 61b \ 2 scan0097 | |
| Electrical experimental record sheet for a mushroom type H.T. rotor for a battery ignition distributor. | 3rd Sep 1928 | Box 61b \ 2 scan0098 | |
| Request to update the distributor spindle on chassis 10.C3 while it is in the shop. | 22th Oct 1928 | Box 61b \ 2 scan0099 | |
| Request for the return of a non-standard distributor with an off-set rocker and stainless steel pivot pin for examination. | 22th Mar 1929 | Box 61b \ 2 scan0100 | |
| 20-HP distributor rotor failure on car GXL-6 which caused complete engine failure. | 10th Apr 1929 | Box 61b \ 2 scan0101 | |
| Investigation into the cause of a 20 HP distributor rotor failure and proposed solutions. | 11th Apr 1929 | Box 61b \ 2 scan0102 | |
| Breakdown tests on a mushroom-type battery ignition distributor rotor. | 15th Apr 1929 | Box 61b \ 2 scan0103 | |
| Breakdown tests of a battery ignition distributor rotor. | 12th Apr 1929 | Box 61b \ 2 scan0104 | |
| The supply and testing of 4 distributor rotors with thicker crowns. | 19th Apr 1929 | Box 61b \ 2 scan0105 | |
| Increasing the crown thickness for battery ignition mushroom H.T. rotors to prevent breakdown. | 20th Apr 1929 | Box 61b \ 2 scan0106 | |
| Test report on the voltage breakdown performance of a battery ignition mushroom type H.T. rotor. | 19th Apr 1929 | Box 61b \ 2 scan0107 | |
| Assistant's report on a battery ignition distributor head. | 2nd May 1929 | Box 61b \ 2 scan0108 | |
| On the corrosion failure of a steel spring in the battery ignition distributor head, suggesting material alternatives. | 2nd May 1929 | Box 61b \ 2 scan0109 | |
| Extract from a report regarding burnt tungsten contacts in a distributor causing misfires. | 30th May 1929 | Box 61b \ 2 scan0110 | |
| Ignition distributor rotor finger failure, recommending a modification to its bottom edges. | 30th Jan 1930 | Box 61b \ 2 scan0111 | |
| Fitting a revised Low Tension Terminal Support to the Ignition Distributor for chassis 14-C4 and 23-EX. | 12th Feb 1930 | Box 61b \ 2 scan0112 | |
| Recommendation to extend the radiusing to the top edges of the ignition distributor rotor finger to prevent breakdown. | 24th Feb 1930 | Box 61b \ 2 scan0113 | |
| Distributor head and rotors made with a new XM.1000 Bakelite moulding powder. | 13th Mar 1930 | Box 61b \ 2 scan0114 | |
| Requesting a test on a distributor head and rotor made from a special non-tracking bakelite material. | 3rd Apr 1930 | Box 61b \ 2 scan0115 | |
| Extract from Mr. Hancock's report on vehicle 23-EX after 5,000 miles, specifically concerning the distributor. | 4th May 1930 | Box 61b \ 2 scan0116 | |
| Extract from a report on the condition of an ignition coil and distributor after a 14,000-mile test. | 5th Apr 1930 | Box 61b \ 2 scan0117 | |
| Extract from a report on the performance of an ignition coil and distributor after mileage tests. | 28th Apr 1930 | Box 61b \ 2 scan0118 | |
| Instruction regarding the rounding off of the top edges of a distributor rotor finger. | 5th May 1930 | Box 61b \ 2 scan0119 | |
| Test report on the non-tracking properties of Bakelite XM.1000 moulded material. | 9th May 1930 | Box 61b \ 2 scan0120 | |
| Recommendation to standardize XM.1000 material for rotors and distributor heads over ordinary bakelite. | 19th May 1930 | Box 61b \ 2 scan0121 | |
| Enquiry into failures on rotors and distributors and the potential use of Bakelite XM.1000 moulded material. | 21th May 1930 | Box 61b \ 2 scan0122 | |
| Extract from Mr. Hancock's report on the condition of a distributor on car 23-EX after 9,000 miles. | 21th May 1930 | Box 61b \ 2 scan0123 | |
| New, stronger spring for the ignition distributor on 20/25 and 40/50 HP chassis. | 4th Jul 1930 | Box 61b \ 2 scan0124 | |
| Extract from G.W. Hancock's report on vehicle 24-EX at 6,000 miles, regarding the distributor. | 20th Jul 1930 | Box 61b \ 2 scan0125 | |
| Extract from G.W. Hancock's report on vehicle 24-EX at 10,000 miles, detailing a failure in the distributor contact points. | 15th Aug 1930 | Box 61b \ 2 scan0126 | |
| Experimental record sheet for battery ignition distributor cams hardened by the 'Cloudburst' process. | 3rd Sep 1930 | Box 61b \ 2 scan0127 | |
| Experimental record sheet for battery ignition cams hardened by the 'Cloudburst' process. | 3rd Sep 1930 | Box 61b \ 2 scan0128 | |
| Experimental record sheet for battery ignition distributor cams hardened by the 'Cloudburst' process. | 4th Sep 1930 | Box 61b \ 2 scan0129 | |
| Adjusting the distributor and sparking plug gaps for the 20/25 HP ignition system. | 4th Nov 1930 | Box 61b \ 2 scan0130 | |
| Experiments with the 20/25 ignition system, focusing on distributor spark path and safety margins. | 9th Nov 1930 | Box 61b \ 2 scan0131 | |
| 20/25 ignition system tests, identifying insufficient coil voltage for higher compression engines and proposing solutions. | 4th Dec 1930 | Box 61b \ 2 scan0132 | |
| Extract from a report on a distributor issue for vehicle 18-GIV after 6,000 miles. | 18th Dec 1930 | Box 61b \ 2 scan0133 | |
| Extract from a report on a 10,000-mile test of distributor components on vehicle 18-GIV. | 30th Jan 1931 | Box 61b \ 2 scan0134 | |
| Suggestion for the lubrication of the battery ignition distributor cam. | 27th Mar 1931 | Box 61b \ 2 scan0135 | |
| Request for the Experimental Department to create three lighter Contact Fingers for the Ignition Distributor on 20/25 HP and 40/50 HP Chassis. | 8th Jul 1931 | Box 61b \ 2 scan0136 | |
| Reporting that the distributor tower on Phantom II and 20/25 engines becomes loose, and requests a modification using a bronze bush. | 1st Jul 1931 | Box 61b \ 2 scan0137 | |
| To fit a new cam and H.T. rotor to ignition distributors on specific chassis for economy purposes. | 28th Aug 1931 | Box 61b \ 2 scan0138 | |
| Recommendation to bush battery ignition distributor towers to prevent wear and irregular ignition at high engine speeds. | 29th Sep 1931 | Box 61b \ 2 scan0139 | |
| Modification to the ignition distributor base for the 20/25 HP Chassis. | 10th Oct 1931 | Box 61b \ 2 scan0140 | |
| Modification instructions for an ignition distributor on an 18-GIV chassis before a 10,000-mile test. | 23th Oct 1931 | Box 61b \ 2 scan0141 | |
| Request to modify the 19-GIV battery ignition distributor with three specific changes. | 25th Nov 1931 | Box 61b \ 2 scan0142 | |
| Experimenting with brass and nickel to improve the lifespan of distributor sparking points. | 9th Nov 1931 | Box 61b \ 2 scan0143 | |
| Request to test a revised combination of metals, brass and nickel, for ignition distributor contacts and rotor blades. | 26th Nov 1931 | Box 61b \ 2 scan0144 | |
| Change in the design of an electrical ignition coil with an external primary. | 28th Nov 1931 | Box 61b \ 2 scan0145 | |
| Redesign of a battery ignition distributor head to use moulded bakelite for the threads and terminal nuts. | 14th Dec 1931 | Box 61b \ 2 scan0146 | |
| Blueprint diagram of a distributor boss cross-section with a bakelite terminal nut. | 12th Dec 1931 | Box 61b \ 2 scan0147 | |
| Request to manufacture three lighter battery ignition levers and modify the rocker block to address ignition irregularities. | 6th Dec 1931 | Box 61b \ 2 scan0148 | |
| Work order for the manufacture of components for an ignition distributor for 20/25 & 40/50 HP models. | 22th Dec 1931 | Box 61b \ 2 scan0149 | |
| Request to modify a 20/25 standard battery ignition distributor for high-speed work on the test beds. | 23th Dec 1931 | Box 61b \ 2 scan0150 | |
| Confirming specifications for a battery ignition distributor, including the make-to-break ratio and condenser capacity. | 1st Jan 1932 | Box 61b \ 2 scan0151 | |
| The design and material specifications for the 'Japan III' Ignition Distributor. | 3rd Feb 1932 | Box 61b \ 2 scan0152 | |
| Expected shipment of a Distributor from the Delco Aviation Corporation. | 3rd Feb 1932 | Box 61b \ 2 scan0153 | |
| Ventilation design for the J.III distributor head, comparing gauze-covered holes to drilled holes. | 2nd Mar 1932 | Box 61b \ 2 scan0154 | |
| The optimal air gap size for a jump spark battery ignition distributor. | 5th Feb 1932 | Box 61b \ 2 scan0155 | |
| Standardisation of chassis parts, specifically modifications to a battery ignition distributor. | 4th Feb 1932 | Box 61b \ 2 scan0156 | |
| Standardization report for chassis parts. | 24th Mar 1932 | Box 61b \ 2 scan0157 | |
| Request for one distributor for testing with a new type of ignition coil in connection with J. 3. and Peregrine engines. | 24th Mar 1932 | Box 61b \ 2 scan0158 | |
| The lack of a synchronising mechanism for the two breaks on the Japan 3 and Peregrine distributor. | 4th Apr 1932 | Box 61b \ 2 scan0159 | |
| Recommendation to change materials for J.3. and Peregrine ignition distributor components for improved wear. | 4th Apr 1932 | Box 61b \ 2 scan0160 | |
| On battery ignition distributor wear, comparing stainless steel points to a preferred combination of brass inserts and a nickel rotor blade. | 1st Apr 1932 | Box 61b \ 2 scan0161 | |
| Request to arrange a trial for a Watford 6 cylinder ignition distributor for comparison with a Lucas model. | 9th May 1932 | Box 61b \ 2 scan0162 | |
| Confirming a conversation with the Watford Company regarding the supply of Distributors and Coils with Automatic Advance. | 13th May 1932 | Box 61b \ 2 scan0163 | |
| Critique and suggestions for the J.3 and Peregrine engine distributors. | 14th May 1932 | Box 61b \ 2 scan0164 | |
| Distributors and coils with automatic advance from the Watford Company and the potential use of a double lever and three-lobed cam. | 18th May 1932 | Box 61b \ 2 scan0165 | |
| Responding to a suggestion regarding insulating washers for the 'Japan III' ignition distributor. | 21th May 1932 | Box 61b \ 2 scan0166 | |
| Standardisation of battery ignition distributor head, sparking points, and rotor blade to reduce wear. | 6th Apr 1932 | Box 61b \ 2 scan0167 | |
| Standardisation form for a new chassis part, detailing approval, costs, and implementation. | 12th Jan 1938 | Box 61b \ 2 scan0168 | |
| Request for a modified cam (D.53027) for the J. 3. and Peregrine distributor to be fitted to a test bed engine. | 26th May 1932 | Box 61b \ 2 scan0169 | |
| Excessive wear on distributor contact points, concluding that varying ballast resistance temperature is the cause. | 2nd Jun 1932 | Box 61b \ 2 scan0170 | |
| Proposal from a supplier for different types of battery ignition distributors for a 6-cylinder engine. | 14th Jun 1932 | Box 61b \ 2 scan0171 | |
| Requesting Messrs. North's to make a distributor head with two contact levers and a three-lobe cam for trial on the Bensport. | 29th Jun 1932 | Box 61b \ 2 scan0172 | |
| Special Distributor Head with a three-lobed cam for the Watford Battery Ignition. | 19th Jul 1932 | Box 61b \ 2 scan0173 | |
| Peregrine and J.3. Distributor, enclosing document LeC.3073. | 24th Aug 1932 | Box 61b \ 2 scan0174 | |
| 500-hour bench endurance test for the new type Peregrine ignition distributor. | 30th Sep 1932 | Box 61b \ 2 scan0175 | |
| Page 2 of a test report on a new distributor, comparing its performance and noting a lubrication issue. | 21th Aug 1932 | Box 61b \ 2 scan0176 | |
| Request for six spare contact plates and levers for a Peregrine Distributor for bench testing. | 30th Aug 1932 | Box 61b \ 2 scan0177 | |
| Failure and proposed modifications for the Peregrine ignition distributor. | 21th Sep 1932 | Box 61b \ 2 scan0178 | |
| Mistake with the Peregrine ignition distributor which caused misfiring, and a proposed temporary fix. | 23th Sep 1932 | Box 61b \ 2 scan0179 | |
| Water ingress issues with the Peregrine ignition distributor and proposed solutions. | 4th Oct 1932 | Box 61b \ 2 scan0180 | |
| Blueprints and modifications for the 'Peregrine II' Ignition Distributor cam. | 28th Oct 1932 | Box 61b \ 2 scan0181 | |
| Request to fit a Double Breaker Peregrine Ignition Distributor to a J.1 engine to improve high-speed performance. | 29th Oct 1932 | Box 61b \ 2 scan0182 | |
| New, cheaper method of producing Rocker Blocks for the Peregrine II Ignition Distributor from Bakelised Linen. | 29th Oct 1932 | Box 61b \ 2 scan0183 | |
| Proposal to source Peregrine, J.3, and Bensport ignition distributor contact sets from Delco-Remy due to cost savings. | 11th Nov 1932 | Box 61b \ 2 scan0184 | |
| Alteration 736/Dss for the Ignition Distributor on 'Peregrine II' and 'Japan III' chassis, listing new parts. | 16th Nov 1932 | Box 61b \ 2 scan0185 | |
| Request to produce a Peregrine & J.3 Distributor unit for bench testing experiments. | 17th Nov 1932 | Box 61b \ 2 scan0186 | |
| Modifications to the Peregrine ignition distributor to improve ventilation and prevent rusting, including results of a 500-hour bench test. | 12th Dec 1932 | Box 61b \ 2 scan0187 | |
| Request to alter the gears on an ignition test rig for Peregrine distributors. | 13th Dec 1932 | Box 61b \ 2 scan0188 | |
| Modification request for the ignition distributor governor on a 3 Per.II Chassis. | 30th Dec 1932 | Box 61b \ 2 scan0189 | |
| Adaptation of Peregrine distributors for Bensport engines, requiring a new cam for reversed rotation. | 3rd Jan 1933 | Box 61b \ 2 scan0190 | |
| | | | |
