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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DescriptionDateIdentifier
Specification chart for various types of electrical wire.1st Jul 1920Box 168b \ 2  img034
Gridded table of numerical data and calculations.19th Jul 1920Box 168b \ 2  img035
Requesting the Pattern Shop to create two specimen boxes for chassis wiring.19th Jul 1920Box 168b \ 2  img036
Request for specimens of wire, with and without ferflex armouring, to be made at Glovers.13th May 1920Box 168b \ 2  img037
Extract regarding the earthed wiring scheme and battery placement on the Delage Car.23th Jul 1920Box 168b \ 2  img038
Supply issues and wiring configuration for a twelve-volt lighting system.26th Jul 1920Box 168b \ 2  img039
The dispatch of a case of wire specimens and their specifications.25th Aug 1920Box 168b \ 2  img040
Merits of six-volt versus twelve-volt electrical systems following Mr. Bijur's visit to the works.26th Aug 1920Box 168b \ 2  img041
The merits of a twelve-volt electrical system versus a six-volt system.26th Aug 1920Box 168b \ 2  img042
Instruction sheet detailing voltage drop and resistance tests on new standard Glover wiring.18th Mar 1921Box 168b \ 2  img043
Graph plotting terminal volts at the motor with various batteries and starter cables on an RR car.8th Jun 1921Box 168b \ 2  img044
Letter enclosing and discussing test results for various batteries and starter motors.8th Jun 1921Box 168b \ 2  img045
Comparing the performance of Westinghouse and Bijur starting motors on the 4-EX model.11th Aug 1920Box 168b \ 2  img046
Analysis of vehicle starting performance, comparing different batteries and cables.11th Aug 1930Box 168b \ 2  img047
Comparison of Exide and Willard batteries and specifications for starter cables.12th Aug 1920Box 168b \ 2  img048
Modifications to battery position, starter cable, and tool storage for American and English cars.11th Aug 1920Box 168b \ 2  img049
Letter discussing starter motor brake tests and comparing performance curves.17th Jul 1921Box 168b \ 2  img050
Performance of various batteries and starter cables, particularly under winter conditions.11th Feb 1921Box 168b \ 2  img051
Cold-weather starting performance, proposing refrigerator tests to analyze power loss and oil viscosity effects.11th May 1920Box 168b \ 2  img052
Issues with battery cable routing and recommendations for correct installation.18th Jun 1921Box 168b \ 2  img053
Note on the improper arrangement of battery cables and a disagreement with the coachbuilders' current practice.15th Jun 1921Box 168b \ 2  img054
Letter forwarding an inquiry from General Electric about standardizing single versus double contact base lamps for car wiring.3rd Aug 1921Box 168b \ 2  img055
The merits of two-wire versus single-wire electrical systems.18th Aug 1921Box 168b \ 2  img056
Letter to the Managing Director discussing the advantages of a single-wire earthed electrical system and a new distribution board.18th Aug 1921Box 168b \ 2  img057
Letter regarding the future difficulty of obtaining bulbs for old types of cars.18th Aug 1921Box 168b \ 2  img058
Analysis of the electrical resistance in a standard starter motor system, focusing on battery and cable performance.8th Sep 1921Box 168b \ 2  img059
Extract listing and assessing various battery models, noting the poor performance of a U.S.A. model.1st Sep 1921Box 168b \ 2  img060
Starter motor performance in relation to battery characteristics, referencing notes from U.S.A.13th Sep 1921Box 168b \ 2  img061
Defining the limit for a battery's virtual internal resistance required for operating the starter motor.13th Sep 1921Box 168b \ 2  img062
Alterations to high-rate battery discharge testing procedures and standards.13th Sep 1921Box 168b \ 2  img063
Technical discussion on battery and starter motor performance, referencing previous reports and tests.13th Sep 1921Box 168b \ 2  img064
Report discussing starter motor and battery performance, comparing systems and components.13th Sep 1921Box 168b \ 2  img065
Continued memorandum discussing starter motor brake tests and the relative merits of plotting results on a torque versus an ampere base.13th Sep 1921Box 168b \ 2  img066
Comparative tests of an American standard and an R.R. standard starter motor cable on a 4EX chassis.7th Oct 1921Box 168b \ 2  img067
Wiring specifications and cable ordering for the Goshawk earthed wiring scheme.13th Jan 1922Box 168b \ 2  img068
Color specifications for various models and referencing a past quotation.13th Jan 1922Box 168b \ 2  img069
Specification of cables for the R.R. Goshawk wiring system.13th Jan 1922Box 168b \ 2  img070
Proposed standardisation of the 40/50 starter motor components for a livelier start.9th Feb 1923Box 168b \ 2  img071
Letter proposing a patented system for identifying terminal wires using marked rubber sleeves.18th Mar 1922Box 168b \ 2  img072
Letter declining interest in a patented system for the identification of terminal wires.22th Mar 1922Box 168b \ 2  img073
Listing specifications for various types of electric cable for 40/50 or Goshawk II models.28th Jun 1922Box 168b \ 2  img074
Specification for a metal braided, single-core electric cable.28th Jun 1922Box 168b \ 2  img075
Specification sheet for 600 Megohm Grade, metal braided electric cable.28th Jun 1922Box 168b \ 2  img076
Specification sheet for a single core, 600 Megohm grade electric cable.27th Sep 1922Box 168b \ 2  img077
Specification for 600 Megohm Grade, Metal Braided, Twin Core Electric Cable.27th Sep 1922Box 168b \ 2  img078
Specification for a twin core, metal braided electric cable.27th Sep 1922Box 168b \ 2  img079
Specification sheet for a 3-core, metal-braided electric cable.29th Aug 1938Box 168b \ 2  img080
Specification sheet for a 4 core, metal braided electric cable.29th Aug 1938Box 168b \ 2  img081
Specification for a 600 Megohm Grade electric cable.23th Oct 1917Box 168b \ 2  img082
Material and construction specification for a single core electric cable.23th Oct 1917Box 168b \ 2  img083
Material specification for single core electric cable.13th Oct 1922Box 168b \ 2  img084
Specification sheet for a single core electric cable.13th Oct 1922Box 168b \ 2  img085
Specification sheet for electric cable, specifically workshop twin flex.30th Jun 1920Box 168b \ 2  img086
Revisions to electric cable specifications for the 40/50 Chassis and Goshawk II models.1st Dec 1922Box 168b \ 2  img087
Specification for Ferflex Braided, single-core electric cable.30th Nov 1922Box 168b \ 2  img088
Specification sheet for a single core, braided electric cable.30th Mar 1933Box 168b \ 2  img089
Specification sheet for an Electric Cable, 600 Megohm Grade.30th Nov 1919Box 168b \ 2  img090
Specification sheet for 600 Megohm Grade electric cable.30th Nov 1922Box 168b \ 2  img091
Specification for Electric Cable, 600 Megohm Grade, with Ferflex Braiding.30th Nov 1922Box 168b \ 2  img092
Specification for a 3 Core Electric Cable, 600 Megohm Grade.30th Nov 1922Box 168b \ 2  img093
Specification sheet for a 4-core, Ferflex braided electric cable.30th Nov 1927Box 168b \ 2  img094
Specification sheet for a single core electric cable.30th Nov 1922Box 168b \ 2  img095
Specification sheet for a single core electric cable.30th Nov 1922Box 168b \ 2  img096
Specification sheet for a single core electric cable.30th Nov 1922Box 168b \ 2  img097
Specification for Electric Cable, Workshop Twin Flex.30th Nov 1922Box 168b \ 2  img098
Specification for Ferflex Braided electric cable.14th Sep 1923Box 168b \ 2  img099
Specification for Ferflex braided electric cable.14th Sep 1923Box 168b \ 2  img100
Specification for Electric Cable, 600 megohm grade.14th Sep 1923Box 168b \ 2  img101
Specification for Ferflex Braided electric cable.14th Sep 1923Box 168b \ 2  img102
Specification for Ferflex Braided electric cable.14th Sep 1923Box 168b \ 2  img103
Specification for Ferflex braided electric cable.14th Sep 1923Box 168b \ 2  img104
Specification for Ferflex Braided electric cable.14th Sep 1923Box 168b \ 2  img105
Specification for a single core electric cable.14th Oct 1923Box 168b \ 2  img106
Specification for a single core electric cable.14th Oct 1923Box 168b \ 2  img107
Specification for a single core electric cable.14th Oct 1923Box 168b \ 2  img108
Specification for Workshop Twin Flex electric cable.14th Oct 1923Box 168b \ 2  img109
Specification sheet for Ferflex braided, twin-core electric cable.14th Sep 1923Box 168b \ 2  img110
Specification sheet for two types of Ferflex braided electrical cable.14th Sep 1923Box 168b \ 2  img111
Specification sheet for single and twin core electric cables.14th Sep 1923Box 168b \ 2  img112
Specifications for two types of electric cables, numbers 254 and 255.14th Sep 1923Box 168b \ 2  img113
Specification for Ferflex Braided electric cable.14th Sep 1923Box 168b \ 2  img114
Specification for a single core electric cable.14th Oct 1923Box 168b \ 2  img115
Specifications for Workshop Twin Flex and Ferflex Braided electric cables.14th Oct 1923Box 168b \ 2  img116
Forwarding a set of revised printed specifications for electric cable used in chassis production.23th Nov 1923Box 168b \ 2  img117
Specification for a single core electric cable.25th Apr 1925Box 168b \ 2  img118
Requesting an inspection of a wiring tube on chassis EAC.8 suspected of obstructing lubrication points.10th Jun 1926Box 168b \ 2  img119
Requesting the examination of a blueprint for the E.A.C.7. Chassis wiring diagram.1st Jul 1926Box 168b \ 2  img120
Revisions to the EAC.7 wiring diagram, focusing on switch terminology and earthing connections.3rd Jul 1926Box 168b \ 2  img121
Wiring change for the silent starter push button switch.6th Jul 1926Box 168b \ 2  img122
Alterations to the wiring diagram blueprint for the E.A.C.7 chassis, specifically discussing earthing connections.12th Aug 1926Box 168b \ 2  img123
Wiring, agreeing that it is not necessary to show the earthing connections.13th Aug 1926Box 168b \ 2  img124
Attached report on tests conducted on Ediswan cables.15th Nov 1926Box 168b \ 2  img125
EAC.7 ignition wire fittings, discussing wire routing and proposed modifications to the induction manifold.20th Dec 1926Box 168b \ 2  img126
Notification of alterations to the Phantom chassis wiring diagram for 'C-2-B' series onwards.11th Jan 1927Box 168b \ 2  img127
Tests conducted on electric cables, comparing single core and twin flex samples.11th Jan 1927Box 168b \ 2  img128
Test report comparing the breakdown voltage of twin flex and single core electric cables against the company's standard.11th Jan 1927Box 168b \ 2  img129
Testing of six workshop cable samples received from Messrs. Wm. Geipel & Company.11th Jan 1927Box 168b \ 2  img130
Report on electric cables and the handover of samples.12th Jan 1927Box 168b \ 2  img131
Requesting tests on cable and wire samples supplied by Messrs. Wm. Geipel & Co Ltd.15th Dec 1926Box 168b \ 2  img132
Proposed alterations to the EAC undershields and a decision to halt work on the EAC.7 engine for a redesign.31th May 1927Box 168b \ 2  img133


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