| Description | Date | Identifier | |
| Proposed battery ignition unit for the 'Goshawk II' engine, comparing distributor designs from Bosch and Packard Delco. | 25th Feb 1921 | Box 54 \ 5 Scan144 | |
| Recommendation to fit battery ignition to the Goshawk I car due to unsatisfactory performance with its magneto. | 25th Feb 1921 | Box 54 \ 5 Scan145 | |
| Copy of a label from Mr. Hives to Mr. Royce regarding the inspection and potential testing of a U.S.A. Bosch ignition system. | 8th Mar 1921 | Box 54 \ 5 Scan146 | |
| Test bench figures for the Goshawk I engine's starting torque and advance. | 28th Apr 1921 | Box 54 \ 5 Scan147 | |
| Data table for the Goshawk I engine, detailing battery ignition timing settings (retard/advance) against various RPMs. | 28th Apr 1921 | Box 54 \ 5 Scan148 | |
| Use of an ebonite band on bakelite mouldings for the Goshawk II engine's battery ignition to prevent carbon tracking. | 1st Jun 1921 | Box 54 \ 5 Scan149 | |
| Modifications to the rotor, spark points, and governor tower. | 1st Aug 1921 | Box 54 \ 5 Scan150 | |
| Forwarding drawings for the Goshawk II engine's Ballast Resistance and Ignition Wiring. | 1st Jun 1921 | Box 54 \ 5 Scan151 | |
| To halt detailing work on the 'Goshawk II' battery ignition mechanism in favour of a new, simpler design. | 28th May 1921 | Box 54 \ 5 Scan152 | |
| Use and manufacturing of bakelite moulds for coil cases and other electrical components. | 27th Jun 1921 | Box 54 \ 5 Scan153 | |
| Page 2 of a document discussing a less expensive material alternative to mica or micanite. | 27th Jun 1921 | Box 54 \ 5 Scan154 | |
| The ballast resistance wire for the 'Goshawk' battery ignition system. | 14th Jul 1921 | Box 54 \ 5 Scan155 | |
| The sparking characteristics of a new ballast resistance compared to the standard arrangement. | 14th Jul 1921 | Box 54 \ 5 Scan156 | |
| Drawing parts and specifications for the 'Goshawk' II Ballast Resistance. | 11th Jul 1921 | Box 54 \ 5 Scan157 | |
| Goshawk II battery ignition system and its ballast resistance design. | 19th Jul 1921 | Box 54 \ 5 Scan158 | |
| Features of the non-trembler battery electrical and ignition system for the 'Goshawk II'. | 29th Aug 1921 | Box 54 \ 5 Scan159 | |
| Continued discussion on engine ignition systems, hand starting, and back-firing. | 29th Aug 1921 | Box 54 \ 5 Scan160 | |
| The initial testing of a U.S.A. Bosch battery ignition system and comparing its components to company standards. | 5th Sep 1921 | Box 54 \ 5 Scan161 | |
| Report comparing condenser capacity and different battery ignition systems. | 5th Sep 1921 | Box 54 \ 5 Scan162 | |
| Revised specification for the Goshawk II battery ignition governor spring and advance timing. | 28th Oct 1921 | Box 54 \ 5 Scan163 | |
| Extract from a report on the Goshawk II engine's battery ignition system following a visit by Mr. Hives. | 9th Nov 1921 | Box 54 \ 5 Scan164 | |
| Design suggestions for Goshawk and other battery ignition systems to prevent energy losses. | 13th Nov 1922 | Box 54 \ 5 Scan165 | |
| Testing of condenser materials, modifications to coil construction, and ignition system failures at slow speeds. | 13th Nov 1922 | Box 54 \ 5 Scan166 | |
| Coil performance, requesting stabalite coils for a Goshawk, and establishing a 'figure of merit' test. | 11th Sep 1922 | Box 54 \ 5 Scan167 | |
| Comparing the benefits of battery versus magneto ignition systems for the 'Goshawk II' engine. | 28th Nov 1921 | Box 54 \ 5 Scan168 | |
| Extract from a report discussing battery ignition following a visit with the 'Goshawk II' vehicle. | 25th Nov 1921 | Box 54 \ 5 Scan169 | |
| Extract from a report detailing a visit to West Wittering regarding the Goshawk II. | 25th Nov 1921 | Box 54 \ 5 Scan170 | |
| Modifications to the battery ignition coil for the Goshawk engine due to high-speed performance issues. | 29th Dec 1921 | Box 54 \ 5 Scan171 | |
| Ignition system failings and potential improvements for the 40/50 model. | 29th Dec 1921 | Box 54 \ 5 Scan172 | |
| The performance variations of ignition coils and the role of condenser capacity. | 29th Dec 1921 | Box 54 \ 5 Scan173 | |
| Condenser capacity and its effect on ignition system performance, comparing mica and paper condensers. | 29th Dec 1921 | Box 54 \ 5 Scan174 | |
| The completion of the 'Goshawk' model, covering a 10,000-mile test, the ignition system, and starter components. | 29th Dec 1922 | Box 54 \ 5 Scan175 | |
| Development and selection of electrical components including the dynamo, switchbox, distributing board and lanterns. | 29th Dec 1921 | Box 54 \ 5 Scan176 | |
| Drawing Lec1499 which details a revised battery ignition with an improved condenser for the Goshawk 11. | 14th Dec 1921 | Box 54 \ 5 Scan177 | |
| Visit concerning battery ignition modifications for the Goshawk II engine. | 21th Dec 1921 | Box 54 \ 5 Scan178 | |
| Three modifications to the Goshawk 11 battery ignition system. | 31th Dec 1921 | Box 54 \ 5 Scan179 | |
| Recommendation to modify the 6.EX Car with fittings for low-grade petrol and a Goshawk type battery ignition for testing. | 16th Jan 1922 | Box 54 \ 5 Scan180 | |
| List of experimental points to be settled regarding the Goshawk ignition system. | 1st Feb 1922 | Box 54 \ 5 Scan181 | |
| The development status of Goshawk engine ignition system components, including coils, condensers, and cams. | 1st Feb 1922 | Box 54 \ 5 Scan182 | |
| Experiments and observations of ignition system components, including coils, distributors, sparking points, and governor characteristics. | 2nd Feb 1922 | Box 54 \ 5 Scan183 | |
| Production of a 'Goshawk' Ballast Resistance unit, pending confirmation of the resistance wire specifications. | 2nd Feb 1922 | Box 54 \ 5 Scan184 | |
| Request for the preparation of three experimental ballast resistances for the Goshawk ignition system. | 13th Feb 1922 | Box 54 \ 5 Scan185 | |
| Outlining the performance requirements for a battery ignition system for the Goshawk engine. | 14th Feb 1922 | Box 54 \ 5 Scan186 | |
| Updates and specifications for the Goshawk ignition system components. | 24th Feb 1922 | Box 54 \ 5 Scan187 | |
| The length of nickel ballast resistance wire for the Goshawk engine. | 2nd Mar 1922 | Box 54 \ 5 Scan188 | |
| Extract regarding a potential Goshawk engine battery ignition failure due to bunched wires. | 7th Mar 1922 | Box 54 \ 5 Scan189 | |
| Loose Goshawk ballast resistance terminal and a suggestion to include spring washers. | 29th Mar 1922 | Box 54 \ 5 Scan190 | |
| The lubrication of the cam for the ignition make and break on the Goshawk II engine. | 31th Mar 1922 | Box 54 \ 5 Scan191 | |
| The Goshawk II battery ignition and governor design. | 28th Mar 1922 | Box 54 \ 5 Scan192 | |
| The Goshawk II engine's ignition system and its safety gap feature. | 10th Apr 1922 | Box 54 \ 5 Scan193 | |
| Ignition issues for the Goshawk engine, with suggestions for modifications to the distributor cover and LT rocker spring. | 2nd Jun 1922 | Box 54 \ 5 Scan194 | |
| Spark plug adjustments to improve engine performance at slow and high speeds. | 2nd Jun 1922 | Box 54 \ 5 Scan195 | |
| Modifications for a Goshawk battery ignition distributor unit. | 14th Jun 1922 | Box 54 \ 5 Scan196 | |
| Method of fixing contact points and instructions for the governor mechanism. | 14th Jun 1922 | Box 54 \ 5 Scan197 | |
| Specification sheet listing the standard quantities for the Goshawk Ignition system. | 21th Aug 1922 | Box 54 \ 5 Scan198 | |
| Adaptation of a Goshawk 11 battery ignition to a Goshawk I chassis, referencing drawing No. Lec 1616. | 21th Aug 1922 | Box 54 \ 5 Scan199 | |
| Points from HS's visit to WW regarding the Bendix, water pump, and battery ignition. | 16th Aug 1922 | Box 54 \ 5 Scan200 | |
| On the correct method for connecting the Goshawk ballast resistance wire to its tag. | 25th Aug 1922 | Box 54 \ 5 Scan201 | |
| Proposing the use of a Goshawk battery ignition system on the 40/50 chassis. | 1st Aug 1922 | Box 54 \ 5 Scan202 | |
| Particulars of Ballast Resistance for a Goshawk Ignition system, as given on drawing D.50197. | 11th Sep 1922 | Box 54 \ 5 Scan203 | |
| Required modifications to the Goshawk Ignition & Lighting Switch. | 9th Sep 1922 | Box 54 \ 5 Scan204 | |
| Potential failures and suggested improvements for a switch component, including its brushes, terminals, casing, and washers. | 9th Sep 1922 | Box 54 \ 5 Scan205 | |
| Postscript about screw failure due to badly formed spring washers, with recommended modifications. | 5th Oct 1922 | Box 54 \ 5 Scan206 | |
| Mandatory modifications for the Goshawk 11 ignition coil. | 5th Oct 1922 | Box 54 \ 5 Scan207 | |
| Confirming an instruction to alter the length of the Goshawk ignition ballast resistance wire from 32' to 25'. | 5th Oct 1922 | Box 54 \ 5 Scan208 | |
| Arguing for fitting the 40/50 model with the governed ignition developed for the No. 6 Goshawk. | 17th Oct 1922 | Box 54 \ 5 Scan209 | |
| Engine starting issue due to the contact maker setting and ignition timing. | 19th Oct 1922 | Box 54 \ 5 Scan210 | |
| Goshawk ignition tests, detailing intermittent failures and suggesting modifications to condenser connections. | 25th Oct 1922 | Box 54 \ 5 Scan211 | |
| Alterations to condensers for the four Goshawk demonstration cars. | 31th Oct 1922 | Box 54 \ 5 Scan212 | |
| Battery ignition issues on the Goshawk engine, specifically the 'Neinst' effect on porcelain conductivity at high temperatures. | 31th Oct 1922 | Box 54 \ 5 Scan213 | |
| Use of vulcasbestos instead of asbestos for the Goshawk II ballast resistance. | 4th Nov 1922 | Box 54 \ 5 Scan214 | |
| Telegram about Goshawk battery ignition issues, specifically concerning coil insulation and colouring materials. | 9th Nov 1922 | Box 54 \ 5 Scan215 | |
| Materials for coil cases, comparing wood fillers with mouldensite and asbestos. | 9th Nov 1922 | Box 54 \ 5 Scan216 | |
| Insulating properties of bakelite in a Goshawk coil and proposing further testing. | 10th Nov 1922 | Box 54 \ 5 Scan217 | |
| List of suggestions for the design of Goshawk and other battery ignition systems to avoid energy loss. | 13th Nov 1922 | Box 54 \ 5 Scan218 | |
| Testing of materials for condensers, coil construction, and investigating ignition failures. | 13th Nov 1922 | Box 54 \ 5 Scan219 | |
| Continued discussion on testing and comparing experimental Stabalite and mouldensite ignition coils. | 13th Nov 1928 | Box 54 \ 5 Scan220 | |
| Efforts to improve the Goshawk II battery ignition coil's resistance to energy leakage. | 15th Nov 1922 | Box 54 \ 5 Scan221 | |
| Continued discussion on improving ignition coil and wiring design to reduce self-induction. | 15th Nov 1922 | Box 54 \ 5 Scan222 | |
| Specifying the standard ignition timing for the Goshawk engine. | 24th Nov 1922 | Box 54 \ 5 Scan223 | |
| Requesting experiments on the Goshawk engine's stabalite ignition coil and its ability to operate using dry batteries. | 30th Nov 1922 | Box 54 \ 5 Scan224 | |
| New Goshawk ignition arrangement for the coil, distributor, and wiring, along with proposed modifications. | 2nd Dec 1922 | Box 54 \ 5 Scan225 | |
| Modifications and associated drawings for the Goshawk II battery ignition system. | 8th Dec 1922 | Box 54 \ 5 Scan226 | |
| Improvements to the ignition coil, wiring layout, and component placement on the chassis. | 12th Aug 1922 | Box 54 \ 5 Scan227 | |
| Experiment to test the suitability of dry batteries for the Goshawk ignition system. | 1st Jan 1923 | Box 54 \ 5 Scan228 | |
| The performance of dry cell batteries, detailing tests on voltage, current, and suitability for engine ignition. | 1st Jan 1923 | Box 54 \ 5 Scan229 | |
| Continued page discussing the extra weight and activation time of cells. | 1st Jan 1923 | Box 54 \ 5 Scan230 | |
| Satisfaction of a battery and dynamo resistance unit scheme for Goshawk chassis delivery. | 4th Jan 1923 | Box 54 \ 5 Scan231 | |
| Production test and inspection procedure for the Goshawk ballast resistance for the ignition coil. | 12th Jan 1923 | Box 54 \ 5 Scan232 | |
| Production and modification of a Ballast Resistance for the Goshawk II engine. | 17th Jan 1923 | Box 54 \ 5 Scan233 | |
| Implementation of a double ignition system for the Goshawk model, detailing the use of different spark plugs and a 3-position switch. | 19th Jan 1923 | Box 54 \ 5 Scan234 | |
| Design improvements for coil cases and ignition system wiring. | 15th Feb 1923 | Box 54 \ 5 Scan235 | |
| The ignition system for the Goshawk engine, recommending a primary battery ignition with a magneto as a backup. | 15th Feb 1923 | Box 54 \ 5 Scan236 | |
| Requirements for a three-position ignition switch for the 40/50 and 20 HP models. | 13th Jan 1923 | Box 54 \ 5 Scan237 | |
| Technical memorandum discussing failures and proposing solutions for the ignition and dynamo on the 4-Goshawk II. | 7th Mar 1923 | Box 54 \ 5 Scan238 | |
| Unsuitability of tan fibre material for the Goshawk ballast resistance compared to vulcasbestos. | 13th Mar 1923 | Box 54 \ 5 Scan239 | |
| Extract discussing the failure of ignition contacts on electrical equipment and the remedial action taken. | 26th Mar 1923 | Box 54 \ 5 Scan240 | |
| The ignition system for the Goshawk engine, proposing a dual battery and magneto setup. | 26th Apr 1923 | Box 54 \ 5 Scan241 | |
| Design considerations for a magneto, including spark control, dimensions, materials, and coupling mechanism. | 26th Apr 1923 | Box 54 \ 5 Scan242 | |
| Dynamometer test comparing a Magneto ignition system with a Goshawk battery ignition system. | 14th Jun 1923 | Box 54 \ 5 Scan243 | |
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