Rolls-Royce Archives
From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
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Table detailing the particulars of resistances and inductances for primary and secondary Goshawk ignition coils.20th May 1925Box 45 \ 4  Scan289
Table detailing the specifications for various coil primary windings.21th Aug 1925Box 45 \ 4  Scan290
On fitting an experimental Goshawk coil and the performance of the standard coil it replaced.21th Aug 1925Box 45 \ 4  Scan291
Instructions regarding improvements to coil base material and the moulding process.15th Sep 1925Box 45 \ 4  Scan292
Comparison of Redmanol and Stabalite materials for manufacturing coil cases.29th Jun 1920Box 45 \ 4  Scan293
Instruction on manufacturing Stabalite cases and the liquidation of the Nestolite material manufacturers.28th Jun 1920Box 45 \ 4  Scan294
Electrical experimental record sheet for a Tall coil in a 'Nestolite' case, model TN2.18th Jun 1924Box 45 \ 4  Scan295
Electrical experimental record sheet for a Tall Coil in a 'Nestolite' case, part number TN1.24th Sep 1925Box 45 \ 4  Scan296
The experimental testing of Redmanol encased battery ignition coils.23th Sep 1925Box 45 \ 4  Scan297
Use of Redmanol instead of stabalite for coil cases.23th Sep 1925Box 45 \ 4  Scan298
Mileage of Freimanol encased coils up to 1st June 1926.9th Jun 1926Box 45 \ 4  Scan299
Standardisation of chassis parts, specifically a moulded Redmanol case for an ignition coil.31th May 1926Box 45 \ 4  Scan300
Comparing the dimensions and properties of Redmanol and stabalite coil cases.21th Jul 1926Box 45 \ 4  Scan301
Instructions for leakage tests of coil-cases moulded in Redmanol.30th Aug 1926Box 45 \ 4  Scan302
Instructions for testing electrical leakage on a coated coil-case placed in a heated silica oven.29th Jun 1920Box 45 \ 4  Scan303
Instructions for a temperature and voltage leakage test on a coil-case, comparing Stabalite and Redmanol materials.29th Jun 1920Box 45 \ 4  Scan304
Test results for leakage in coil cases at various temperatures, with notes on developing a production test.29th Jun 1920Box 45 \ 4  Scan305
Testing a case for leakage using electrodes and tin-foils, noting inconsistent results after heating.29th Aug 1920Box 45 \ 4  Scan306
Instruction regarding the 'curing' effect of prolonged or repeated heating on Redmanol material.29th Jun 1920Box 45 \ 4  Scan307
Re-testing three Elo coil cases after they have been heated in an oven.29th Oct 1926Box 45 \ 4  Scan308
Table detailing the specifications for various coil primary windings.25th Sep 1929Box 45 \ 4  Scan309
Instruction sheet detailing the investigation of a faulty coil, No. 4554, returned from the Repair department.19th May 1927Box 45 \ 4  Scan310
Instructions detailing the testing of an ignition coil to diagnose a fault.8th Dec 1924Box 45 \ 4  Scan311
To Mr. Brock regarding the return of three coil cases which passed testing.15th Sep 1927Box 45 \ 4  Scan312
Extract detailing Mr. Royce's requirements for the 'Goshawk II' electrical system.12th Mar 1921Box 45 \ 4  Scan313
Report of a visit to Messrs Lucas regarding the Goshawk starter motor and switchbox.12th Jul 1921Box 45 \ 4  Scan314
Drawing No. LeC.1456 for the 'BOSHAWK II' Switchbox.29th Sep 1921Box 45 \ 4  Scan315
Parts list for the 'Goshawk' 11 Switch Box, L&C 1603.19th Dec 1921Box 45 \ 4  Scan316
Post-moulding milling and tapping operations on switch body inserts.19th Dec 1921Box 45 \ 4  Scan317
The Goshawk II electrical equipment, discussing the placement of the dynamo switch and a size reduction for the ignition switch.13th Oct 1921Box 45 \ 4  Scan318
Parts list for the Goshawk II Switch Box.15th Oct 1921Box 45 \ 4  Scan319
Parts list detailing drawing numbers, descriptions, materials, and quantities.1st Oct 1921Box 45 \ 4  Scan320
Instruction to halt work on the 'Goshawk' II Switch Box, as Mr. Royce has requested it be decreased in size by 10%.10th Oct 1921Box 45 \ 4  Scan321
Drawing LeC.1457 for the lettering on the Goshawk II switchbox, to be reduced to 90% of the original size.19th Oct 1921Box 45 \ 4  Scan322
Insulation dimensions for 'Goshawk II' electrical fittings, as specified by Mr. Royce.20th Oct 1921Box 45 \ 4  Scan323
Redesign of a lighting and ignition switch for the 'Goshawk II'.17th Nov 1921Box 45 \ 4  Scan324
Electrical work, component design, and material sourcing for the 'Goshawk II' project.21th Nov 1921Box 45 \ 4  Scan325
Instruction sheet accompanying a print for a revised Goshawk switchbox.13th Dec 1921Box 45 \ 4  Scan326
Parts list for a 'Goshawk' 11 Switch Box, reference LEC 1503.12th Dec 1921Box 45 \ 4  Scan327
Parts lists and progress for the 'Goshawk' 11 Switch Box assembly.23th Dec 1921Box 45 \ 4  Scan328
Listing part numbers for a 'Goshawk' 11 Switch Box.28th Dec 1921Box 45 \ 4  Scan329
The creation of a brass model of a Switch Box Handle for Mr. Royce's approval.12th Dec 1921Box 45 \ 4  Scan330
Extract detailing modifications to the dynamo, switchbox, and distributing board for the Goshawk Competition.29th Dec 1921Box 45 \ 4  Scan331
Methods for marking conductors and terminals when detaching the Goshawk II switchbox.30th Dec 1921Box 45 \ 4  Scan332
New drawings for a 'Goshawk' 11 Switch Box.3rd Mar 1922Box 45 \ 4  Scan333
Inquiring about making the locked ignition switch of the Goshawk switchbox adaptable to the magneto.14th Jul 1922Box 45 \ 4  Scan334
Mr. Royce's feedback on the Goshawk ignition keys, steering wheel, and hand brake lever.20th Jul 1922Box 45 \ 4  Scan335
Proposing a modification to the Goshawk switch box for magneto ignition.21th Jul 1922Box 45 \ 4  Scan336
Replacement of unreliable Lucas ignition switchboxes with Goshawk or Delco parts for the 40/5P model.1st Sep 1922Box 45 \ 4  Scan337
The despatch of a Goshawk Ignition switch free of charge.9th Sep 1922Box 45 \ 4  Scan338
Telegram received by telephone requesting a switch box for a Goshawk 2 engine.26th Sep 1922Box 45 \ 4  Scan339
Telegram received by telephone regarding a Goshawk switchbox and magneto switch operation.27th Sep 1922Box 45 \ 4  Scan340
Requested modifications for the Goshawk Ignition & Lighting Switch, with diagrams.29th Sep 1922Box 45 \ 4  Scan341
Technical report detailing potential failures and suggested improvements for a switch, its components, and casing.29th Sep 1922Box 45 \ 4  Scan342
Postscript detailing a screw failure due to badly formed spring washers and recommending a material and length modification.3rd Oct 1922Box 45 \ 4  Scan343
Telegram regarding the quality of switchbox screws and spring washers.3rd Oct 1922Box 45 \ 4  Scan344
Modification to the Goshawk 11 switch-box for magneto ignition wiring to prevent tampering.4th Oct 1922Box 45 \ 4  Scan345
Suggested improvements to the Goshawk Ignition & Lighting Switch.6th Oct 1922Box 45 \ 4  Scan346
Continued memorandum discussing issues with spring washers and a material change for terminal pad screws.19th Jul 1917Box 45 \ 4  Scan347
Requesting blueprints and standard insert parts for a Hawk 11 switchbox for magneto ignition.13th Oct 1922Box 45 \ 4  Scan348
Blueprint request and parts list for a Goshawk II Switchbox for Magneto Ignition.17th Oct 1922Box 45 \ 4  Scan349
Standardisation document detailing a modification to the ignition switch for the Goshawk model.25th Oct 1922Box 45 \ 4  Scan350
Fitting of switchboxes for magneto ignition to three specific cars.1st Dec 1922Box 45 \ 4  Scan351
Proposal to modify the Goshawk switchbox mounting to allow wiring to be completed at the Derby factory.5th Dec 1922Box 45 \ 4  Scan352
New ignition scheme for the Boshawk, using one big and one miniature plug, and a three-position switch.19th Jan 1923Box 45 \ 4  Scan353
New method for fixing a switchbox to the instrument board and requesting a modified unit.2nd Feb 1923Box 45 \ 4  Scan354
Enquiry about the instrument light switch on the Goshawk.13th Apr 1923Box 45 \ 4  Scan355
Serving as a reminder to follow up on the decision to source a permanent switch for the 20 HP instrument board light.13th Apr 1923Box 45 \ 4  Scan356
Points for consideration and experiment on dynamo and other electrical equipment.30th May 1923Box 45 \ 4  Scan357
Instruction on the required mechanical inspection for the R.R. Goshawk switchbox contacts after assembly and before final testing.13th Jun 1923Box 45 \ 4  Scan358
Recurring failures in the Goshawk Switchbox and a reminder for careful inspection.29th Aug 1923Box 45 \ 4  Scan359
Instruction note regarding the diagnosis and repair of a faulty switch.30th Aug 1923Box 45 \ 4  Scan360
Standardisation document for a chassis part, detailing an alteration to the switch box mounting.31th Oct 1923Box 45 \ 4  Scan361
Returning a standardisation sheet with costs filled in for a switch box arrangement.5th Nov 1923Box 45 \ 4  Scan362
Response to a works complaint about a sticking gauge light push button, providing blueprints for a bush modification.8th Dec 1923Box 45 \ 4  Scan363
Alteration of a switchbox, including the new position functions and wiring considerations for the Klaxon horn.17th Dec 1923Box 45 \ 4  Scan364
Experiment testing an alternative connection for the cutout shunt switch on a 20 HP chassis to reduce sparking.29th May 1924Box 45 \ 4  Scan365
Questioning the delay in standardizing a new, advantageous switchbox design for 40/50 & 20 HP models.10th Nov 1925Box 45 \ 4  Scan366
Switchbox standardisation and the use of dummy instruments for a special job car.13th Nov 1925Box 45 \ 4  Scan367
Extract from the minutes of a Sales Conference regarding the supply and carrying of tools for the Goshawk.13th Mar 1922Box 46 \ 1  Scan001
The status of tools for a Goshawk 11 chassis.14th Mar 1922Box 46 \ 1  Scan002
Requesting a sample tool kit for the Goshawk 11 to plan its storage arrangement on the car.27th Apr 1922Box 46 \ 1  Scan003
Contents of the Goshawk 11 tool kit, specifically spanner sizing and a method for flywheel withdrawal.30th Jun 1922Box 46 \ 1  Scan004
Suggestion to increase the water pump drive nut size and send a Goshawk II tool kit for approval.14th Jul 1922Box 46 \ 1  Scan005
Confirming alterations to nuts for the Goshawk tool kit and the method for withdrawing the friction flywheel.14th Jul 1922Box 46 \ 1  Scan006
The Goshawk 11 friction flywheel hub design and withdrawal tooling.1st Jul 1922Box 46 \ 1  Scan007
Drawing for the Goshawk spring drive extracting nut for standardisation.14th Jul 1922Box 46 \ 1  Scan008
Specifications for the tool equipment for the Goshawk model.26th Aug 1922Box 46 \ 1  Scan009
Requirements for a new tool set for the Goshawk 11 project, including specifications for spanners, pliers, and storage.11th Sep 1922Box 46 \ 1  Scan010
Note on the design philosophy for tools, stating they must be refined and not rough or clumsy, to match the car's character.9th Sep 1922Box 46 \ 1  Scan011
Design of spanners, requesting they be single-ended and for samples to be obtained for inspection.2nd Oct 1922Box 46 \ 1  Scan012
The standardisation of spanner designs, referencing drawings and cardboard models.10th Oct 1922Box 46 \ 1  Scan013
The design and standardization of a Goshawk sparking spanner.24th Oct 1922Box 46 \ 1  Scan014
The contents and material specifications for a model of a tool and spares box for the Goshawk.11th Nov 1922Box 46 \ 1  Scan015
The weight of tools and spares for the Goshawk chassis to revise statistics.23th Nov 1922Box 46 \ 1  Scan016
The supply and design of a tool bag for the 20HP chassis.7th Mar 1923Box 46 \ 1  Scan017
Covering memo forwarding a communication with the Sales department about the 20-HP Car tool box clearance.2nd May 1923Box 46 \ 1  Scan018
Tool box clearance and brakeropes catching on projecting tool boxes for the 20-HP car.10th Apr 1923Box 46 \ 1  Scan019
Tool box clearance for the 20-HP car's running board.10th Apr 1923Box 46 \ 1  Scan020
To expedite a sample set of spanners for Mr. Royce.24th May 1923Box 46 \ 1  Scan021


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