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).
Rolls-Royce Experimental Archives                
Choose Archive


Browsing Records        Page 418 of 2367        Sort by   Box   Date   Description

Filter      from        to             identifier   [all]
DescriptionDateIdentifier
Adjustments to valve timing, cam forms, and valve springs.5th Sep 1926Box 33 \ 4  Scan081
Inconsistencies in timing procedures for aero engines and requesting a standardized, written scheme.21th Jun 1927Box 33 \ 4  Scan082
Production and attachment of engine timing plates.21th Jun 1927Box 33 \ 4  Scan083
Comments and suggestions on the timing of aero engines, specifically the Condor IV & VIII.23th Jun 1927Box 33 \ 4  Scan084
Technical note detailing engine timing procedures and specifications for Condor and Falcon engines.16th Aug 1927Box 33 \ 4  Scan085
Proposed scheme for checking the timing of the F.11 engine when fitted in an aeroplane.16th Aug 1927Box 33 \ 4  Scan086
Proposed change to the Condor engine valve lift curve and cam timing.10th Sep 1927Box 33 \ 4  Scan087
Comparison of different engine timing schemes depicted in circular diagrams.1st Aug 1927Box 33 \ 4  Scan088
Timing difficulties and requesting a definitive setting for the F.11 & 12 engines.30th Sep 1927Box 33 \ 4  Scan089
Timing procedures for F.11 & 12 engines, covering camshaft and magneto timing.6th Oct 1927Box 33 \ 4  Scan090
Technical note detailing engine timing settings, clearances, and marking specifications for a geared engine.6th Oct 1927Box 33 \ 4  Scan091
Allowances and potential inaccuracies in engine timing and camshaft grinding.10th Oct 1927Box 33 \ 4  Scan092
Technical memorandum detailing the procedure for timing F.11 and F.12 engines.10th Oct 1927Box 33 \ 4  Scan093
Confirming engine timing specifications for the F.11 & 12a engines following a request from the A.I.D.18th Oct 1927Box 33 \ 4  Scan094
Comparative tests of new Condor low lift, long duration camshafts on a Condor 111A engine.27th Nov 1927Box 33 \ 4  Scan095
Effects of new camshafts on valve overlap, fuel consumption, and vibration.4th Nov 1927Box 33 \ 4  Scan096
Performance comparison graph between standard and low-lift camshafts for the Condor III A engine at a 6.5:1 compression ratio.4th Nov 1927Box 33 \ 4  Scan097
Faded document page with a Print Room date stamp in the bottom right corner.17th Nov 1927Box 33 \ 4  Scan098
On adjustments to the magneto timing for an F.XII No. 7 engine and the resulting changes in RPM.26th Nov 1927Box 33 \ 4  Scan099
Valve timing tests and clearances for F.XI and F.XII engines.26th Nov 1927Box 33 \ 4  Scan100
Page two of a document detailing engine valve timing tests and specifications.26th Nov 1927Box 33 \ 4  Scan101
Valve timing specifications and instructions for F.XI and F.XII engines.26th Nov 1927Box 33 \ 4  Scan102
Inaccuracy of the F.XI & XLI timing device and proposing an alternative 'oil tube method' for valve timing.10th Dec 1927Box 33 \ 4  Scan103
Report page detailing the accuracy of engine timing methods and devices.12th Dec 1927Box 33 \ 4  Scan104
Valve and magneto timing specifications with a timing diagram.12th Dec 1927Box 33 \ 4  Scan105
Particulars of the valve and magneto timing for the F.12 test engine, including a timing diagram.21th Dec 1927Box 33 \ 4  Scan106
Best valve and magneto timing for the F.XII engine type test.21th Dec 1927Box 33 \ 4  Scan107
Clarifying valve timing particulars and clearances for the F.X No.14 engine.31th Jan 1928Box 33 \ 4  Scan108
Correction to the type test report for the Condor 3-A, No. 320, concerning ignition timing.21th Feb 1928Box 33 \ 4  Scan109
Amended engine timing instructions for F.11 & F.XII models due to issues with camshaft drive covers.1st May 1928Box 33 \ 4  Scan110
Instructions for timing the F.XI and XII engines.1st May 1928Box 33 \ 4  Scan111
Description of two methods for finding the top dead centre (TDC) position of an engine piston.3rd May 1923Box 33 \ 4  Scan112
Query regarding the timing arrangement for F-Type engines and the handwritten response.3rd May 1923Box 33 \ 4  Scan113
Magneto timing for RR.F.XI.B. and F.XII.B. engines with a 7/1 compression ratio.14th Jun 1928Box 33 \ 4  Scan114
Final recommendation for ignition timing on the aluminium head engine.14th Jun 1928Box 33 \ 4  Scan115
Letter to the Air Ministry regarding modification number 34 for F. Type Engines.20th Jul 1928Box 33 \ 4  Scan116
The development status of the 'H' engine, detailing requirements for the racing variant and the reliability of the service version.1st Aug 1928Box 33 \ 4  Scan117
The performance testing and proposed valve timing modifications for the 'H' engine.1st Aug 1928Box 33 \ 4  Scan118
Supercharger test, detailing performance, issues encountered, and proposed changes.30th Aug 1928Box 33 \ 4  Scan119
Valve timing specifications for RR.F. and H. supercharged engines.30th Aug 1928Box 33 \ 4  Scan120
Alteration to engine timing with two proposed camshaft designs.1st Aug 1928Box 33 \ 4  Scan121
The magneto and valve timing settings for supercharged engines.1st Sep 1928Box 33 \ 4  Scan122
Power curve comparison between a long duration camshaft and a standard camshaft for an FXI engine.12th Oct 1928Box 33 \ 4  Scan123
Faint document cover sheet with a 'Print Room' stamp.13th Oct 1928Box 33 \ 4  Scan124
Submission of Modification No. 46 regarding the timing change for F. Type engines.9th Nov 1928Box 33 \ 4  Scan125
The alteration of timing markings for 'SS' engine flywheels to accommodate a new camshaft.20th Nov 1928Box 33 \ 4  Scan126
Diagram of valve timing markings on a flywheel for an S.S. Engine.21th Nov 1928Box 33 \ 4  Scan127
Camshaft comparison tests for full and moderate supercharged engines, including valve timing data.3rd Jan 1929Box 33 \ 4  Scan128
Graph of comparative power curves for a fully supercharged engine at 10,500 feet, comparing standard and long duration camshafts.20th Dec 1928Box 33 \ 4  Scan129
Blank page with a print room date stamp in the bottom right corner.3rd Jan 1929Box 33 \ 4  Scan130
Comparative power curves at 4000' for a moderate supercharger engine, comparing standard and long duration camshafts.20th Dec 1928Box 33 \ 4  Scan131
Graph of comparative power curves at full throttle for a moderate supercharger engine, comparing standard and long duration camshafts.20th Dec 1928Box 33 \ 4  Scan132
Heavily faded typed document with a purple 'Print Room' stamp in the bottom right corner.3rd Jan 1929Box 33 \ 4  Scan133
Confirming Mr. Royce's requested change to the 20 HP inlet cam form (Sch. 1153) to improve valve gear performance.11th Jun 1929Box 33 \ 4  Scan134
Correspondence concerning valve timing and camshaft forms for the 20 HP car, referencing blueprints of valve lift curves.8th Jun 1929Box 33 \ 4  Scan135
Engine timing, power curve data, compression ratio, and clearance volume for an S.S. model.11th Jul 1929Box 33 \ 4  Scan136
Letter from the Admiralty Air Department requesting tests on electrical speed indicators for aero engines.20th Jun 1915Box 33 \ 4  Scan137
The experimentation on a magneto generator and Weston voltmeter for electrical speed indicators.24th Jun 1915Box 33 \ 4  Scan138
Generator armature reaction, voltmeter readings, and a method for diagnosing errors.6th Jan 1916Box 33 \ 4  Scan139
Unsteady readings on a Weston instrument and requesting a test with a suitable resistance.6th Jan 1916Box 33 \ 4  Scan140
Cover letter sending a copy of correspondence with the Weston Electrical Instrument Company regarding an electrical speedometer.6th Apr 1916Box 33 \ 4  Scan141
Follow-up letter to The Weston Electrical Instrument Co. regarding an overdue Weston Voltmeter for engine revolution indicators.7th Apr 1916Box 33 \ 4  Scan142
The construction of continuous current revolution indicators and experimentation with a vibrator type for the Admiralty.13th May 1916Box 33 \ 4  Scan143
Request to order a combined shunt from the Weston Electrical Instrument Company for car starter motor experiments.4th Dec 1916Box 33 \ 4  Scan144
Notification of receipt for a combined Shunt and Milli-Voltmeter available at the Stores.12th Dec 1916Box 33 \ 4  Scan145
The dispatch of electrical instruments for adjustment and standardisation.1st Jan 1917Box 33 \ 4  Scan146
Letter to the Weston Electrical Instrument Co. regarding the return of electrical testing equipment for examination.10th Nov 1917Box 33 \ 4  Scan147
Instructions to despatch a Mill-Voltmeter with shunts and volt box to the Weston Electrical Instrument Co. for adjustment.10th Nov 1917Box 33 \ 4  Scan148
Letter from Weston Electrical Instrument Company regarding the compatibility of a returned instrument with its shunts and resistance box.12th Nov 1917Box 33 \ 4  Scan149
Letter to Weston Electrical Instrument Co. requesting adjustment of a millivoltmeter set for use as a standard of reference.13th Nov 1917Box 33 \ 4  Scan150
Letter from Weston Electrical Instrument Company regarding the adjustment of shunts and external resistance to an instrument.15th Nov 1917Box 33 \ 4  Scan151
Sourcing a portable testing instrument for the Bijur Dynamo & Regulator.20th Jun 1918Box 33 \ 4  Scan152
Letter from Weston Electrical Instrument Co. detailing specifications for a Milli-voltmeter, with handwritten calculations.16th Mar 1918Box 33 \ 4  Scan153
Inquiry to The Weston Electrical Instrument Co. about the internal resistance of a milli-voltmeter.16th Mar 1918Box 33 \ 4  Scan154
From Weston Electrical Instrument Co. regarding a Model 1 Milli-Voltmeter's full scale deflection current and resistance.20th Mar 1918Box 33 \ 4  Scan155
Suggestion from Mr. Royce to use a specific Delco-Weston type ammeter for the 40/50 HP Chassis.6th Aug 1919Box 33 \ 4  Scan156
Letter from Weston Electrical Instrument Company regarding a Model 1 milli-voltmeter's specifications.20th Mar 1918Box 33 \ 4  Scan157
Requesting the purchase of a Weston combined ammeter and voltmeter for iron depositing work.20th Feb 1919Box 33 \ 4  Scan158
From Weston Electrical Instrument Co. regarding the forwarding of instrument catalogues.17th Mar 1919Box 33 \ 4  Scan159
Letter to The Weston Electrical Instrument Co. inquiring about a sample model ammeter.28th Mar 1919Box 33 \ 4  Scan160
Order for eight Weston Ammeters for specific cars and production.1st Apr 1919Box 33 \ 4  Scan161
Letter from Weston Electrical Instrument Company Ltd. providing a quote for ammeters.1st Apr 1919Box 33 \ 4  Scan162
Page two of a letter from Weston Electrical Instrument Company Ltd. regarding their models.28th Apr 1917Box 33 \ 4  Scan163
Letter from Weston Electrical Instrument Co. regarding the supply of a Model 301 ammeter.4th Apr 1919Box 33 \ 4  Scan164
Page 2 of a letter from Weston Electrical Instrument Company Ltd. regarding a battery testing instrument.6th Aug 1919Box 33 \ 4  Scan165
Receipt of an ammeter, felt washers, and clutch plates from various suppliers for experimentation.23th Apr 1919Box 33 \ 4  Scan166
Lighting installation, discussing parts from the Weston Company and experiments with a Bijur dynamo.25th Apr 1919Box 33 \ 4  Scan167
Requesting enquiries be sent out for an electrical instrument to measure condenser capacities.4th Jun 1919Box 33 \ 4  Scan168
Quotation from Weston Electrical Instrument Company for electrical measuring instruments.12th Jun 1919Box 33 \ 4  Scan169
Record of serial numbers for various Weston electrical measuring instruments and associated parts.30th Jun 1919Box 33 \ 4  Scan170
Notifying the receipt of a Weston Electric Co. model 370 Mil-ammeter for an experiment.2nd Jul 1919Box 33 \ 4  Scan171
The specific instruments required for the production testing of electrical apparatus, namely condensers and ignition coils.19th Aug 1919Box 33 \ 4  Scan172
List of instrument requirements for testing the main switch, starter motor, and dynamo.19th Aug 1919Box 33 \ 4  Scan173
The despatch of a Weston volt-ammeter for re-adjustment.26th Aug 1919Box 33 \ 4  Scan174
Letter of complaint regarding a faulty volt-ammeter and a request for its re-adjustment.26th Aug 1919Box 33 \ 4  Scan175
Request to purchase a Model 1 Weston Milli-voltmeter and various shunts to be used as a standardising set.2nd Sep 1919Box 33 \ 4  Scan176
Requesting the urgent delivery and careful handling of a Standard Weston Instrument.1st Oct 1919Box 33 \ 4  Scan177
The receipt of various electrical components and springs for experiments.8th Nov 1919Box 33 \ 4  Scan178
Sending a Weston Milli-voltmeter for repair of its needle and suspension.12th Nov 1919Box 33 \ 4  Scan179
Request to order a Weston model 163 combined ammeter and voltmeter for the Experimental Department.2nd Jan 1920Box 33 \ 4  Scan180


Copyright Sustain 2025, All Rights Reserved.    whatever is rightly done, however humble, is noble
An unhandled error has occurred. Reload 🗙