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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Two schemes for mounting carburettors and induction pipes for an Eagle 16 engine bench test.30th Dec 1925Box 42 \ 1  Scan104
Modifications to a cylinder head, specifically the induction pipe flanges and adding reinforcement.30th Apr 1926Box 42 \ 1  Scan105
Outlining a procedure to determine the correct ramming length for an induction pipe to achieve high M.E.P.19th Aug 1926Box 42 \ 1  Scan106
Results of a 2-hour acceptance test for an E.XV1 engine, noting power, consumption, and system performance.14th Jan 1927Box 42 \ 1  Scan107
Dismantling of an engine for A.I.D. inspection and subsequent final acceptance test.12th Nov 1925Box 42 \ 1  Scan108
Magneto ignition system options and strategy for the Eagle 16 engine.12th Nov 1925Box 42 \ 1  Scan109
Magneto bracket for the Eagle 16 direct drive, referencing drawing LeC.2171.21th Nov 1925Box 42 \ 1  Scan110
Comparing the weight and performance of an 'Athmos' primer against a standard 'RR' primer.1st Feb 1925Box 42 \ 1  Scan111
The testing and features of the Athmos Primer.1st Feb 1925Box 42 \ 1  Scan112
The function of a fuel pulverizer and its specifications, including jet size.10th Feb 1925Box 42 \ 1  Scan113
Urgent request for the results of tests conducted on an Athmos Primer.26th Nov 1925Box 42 \ 1  Scan114
Requesting which engines to fit with newly made priming nozzles for testing.28th Oct 1927Box 42 \ 1  Scan115
On the F.XI engine, noting improvements in slow running but ongoing problems with starting.21th Nov 1927Box 42 \ 1  Scan116
From AJS to HS requesting an update on the results for RR. E. 16. and plain bearings.6th Nov 1925Box 42 \ 1  Scan117
Comparing drip feed and oil pressure fed bearings for the Eagle XVI engine.12th Jun 1925Box 42 \ 1  Scan118
Describing the design of a direct drive nose, including propeller shaft bearings and casing.18th Nov 1925Box 42 \ 1  Scan119
The failure of pressure and gravity fed Eagle plain bearings during testing.26th Nov 1925Box 42 \ 1  Scan120
Test report on a gravity-fed floating bearing, detailing failures at high speed and test results under various loads.28th Nov 1925Box 42 \ 1  Scan121
From 'E.' to 'Hs.' requesting clarification on the behaviour of a floating bush for the EAGLE XVI engine.28th Nov 1925Box 42 \ 1  Scan122
Unexpected bearing failure and outlining further tests for the Eagle XVI engine plain bearings.30th Nov 1925Box 42 \ 1  Scan123
Eagle XVI engine bearings, comparing oils, feed systems, and bush types.1st Dec 1925Box 42 \ 1  Scan124
Testing plain whitemetalised bearings for the Eagle XVI engine.1st Dec 1935Box 42 \ 1  Scan125
Page detailing results from the second and third bearing tests, including measurements, temperatures, and a seizure failure.12th Jun 1925Box 42 \ 1  Scan126
Results of thrust tests on a new direct drive nose and thrust bearing, No. 215.4th Dec 1928Box 42 \ 1  Scan127
The Eagle XVI thrust bearing.11th Dec 1925Box 42 \ 1  Scan128
Eagle XVI engine thrust bearing test.14th Dec 1925Box 42 \ 1  Scan129
Successful identification of a double conical thrust bearing and comparing it to a less efficient Curtiss model.15th Dec 1925Box 42 \ 1  Scan130
Rough stress curve for the RR. E.XVI. direct drive propeller shaft and requesting modifications to the bore.21th Dec 1925Box 42 \ 1  Scan131
Weight and potential modifications of E.16 engine units, specifically the propeller shaft and nose piece.12th Jan 1926Box 42 \ 1  Scan132
Successful test of a new departure thrust bearing for the Condor engine, noting a potential weight saving.1st Feb 1926Box 42 \ 1  Scan133
Thrust tests for a new No. 216 bearing intended to replace the existing thrust bearing on the Condor engine.26th Jan 1926Box 42 \ 1  Scan134
Comparative weight analysis of a Condor thrust bearing versus a New Departure bearing.8th Feb 1926Box 42 \ 1  Scan135
Progress update on plain bearing experiments with floating bushes and rigid external housing.8th Feb 1926Box 42 \ 1  Scan136
Reduction of weight for the RR. E.16 Direct Drive Nose by changing the thrust bearing.11th Feb 1926Box 42 \ 1  Scan137
Request for individual component weights of a propeller shaft assembly to compare an existing design with a new, lighter one.17th Feb 1926Box 42 \ 1  Scan138
Redesign modifications for weight reduction on the E.XVI direct drive nose.25th Feb 1926Box 42 \ 1  Scan139
Design modifications to an engine's aluminium extension, bolts, nose, and coupling for weight and cost reduction.26th Feb 1926Box 42 \ 1  Scan140
Weight reduction of the RR. E. XVI direct drive nose from 42 lbs to 27.79 lbs.26th Feb 1926Box 42 \ 1  Scan141
From Hs. to AJS. providing an update on delayed bearing tests and initial results.1st Mar 1926Box 42 \ 1  Scan142
Comparative test request for a double-row ball bearing for the Eagle XVI reduction gear.19th Oct 1925Box 42 \ 2  Scan001
Delay with the supercharger for the Eagle XVI engine due to gear grinding problems.28th Jan 1926Box 42 \ 2  Scan002
Delays in completing the Eagle XVI engine due to problems with the gear supplier.28th Jan 1926Box 42 \ 2  Scan003
Experiments and testing procedures for floating bush bearings on the Eagle XVI engine reduction gear.17th Oct 1925Box 42 \ 2  Scan004
Cross-sectional diagram of a trunnion pin assembly with lubrication points and modification notes.17th Oct 1925Box 42 \ 2  Scan005
Confirmation of a telegram regarding a Wormald Eagle rod failure, its probable cause, and proposed testing.21th Mar 1918Box 42 \ 2  Scan006
Connecting rod failure during engine testing, attributing it to a forging crack rather than a design fault.26th Mar 1918Box 42 \ 2  Scan007
Proposal for testing connecting rods of various materials and heat treatments following a failure.26th Mar 1918Box 42 \ 2  Scan008
Connecting rod failures in Eagle engines, discussing potential causes such as forging defects and ongoing material tests.28th Mar 1918Box 42 \ 2  Scan009
Analysis of failed C.V.S. connecting rods detailing the steel composition and a conclusion that overheating was the cause of failure.26th Apr 1917Box 42 \ 2  Scan010
Longitudinal flaw in a connecting rod due to forging the metal when too cold.3rd Apr 1918Box 42 \ 2  Scan011
Testing of mild steel connecting rods for the 'Eagle' engine to investigate a potential design fault.14th Jun 1918Box 42 \ 2  Scan012
Requesting an update on the testing of mild steel connecting rods to determine the cause of breakages.23th Jul 1918Box 42 \ 2  Scan013
The fitting of mild steel connecting rods to the Experimental 'D' Engine.13th Aug 1918Box 42 \ 2  Scan014
Analysis and testing report on mild steel used for Eagle connecting rods.13th Aug 1918Box 42 \ 2  Scan015
Testing mild steel main rods for an Eagle engine, concluding failures are due to material flaws rather than design.13th Aug 1918Box 42 \ 2  Scan016
Cover note for a report on Eagle connecting rods made from mild steel, noting their running time.28th Jan 1926Box 42 \ 2  Scan017
Analysis and testing of Eagle connecting rods made of mild steel.13th Aug 1918Box 42 \ 2  Scan018
Continuation of a report on connecting rod testing, attributing failures to material flaws rather than design.19th Mar 1918Box 42 \ 2  Scan019
Letter from the designer and patentee of a carburettor offering the design for inspection and potential use in aero and car engines.19th Mar 1918Box 42 \ 2  Scan020
Letter to Mr. Davidson requesting arrangement drawings of a Carburetter for examination.26th Mar 1918Box 42 \ 2  Scan021
Letter discussing alterations to drawings, specifically to the throttles and a needle to prevent air leaks and improve starting efficiency.27th Mar 1918Box 42 \ 2  Scan022
Letter from Stephen R. Townsend discussing carburettor design improvements and a new idea for a slide valve engine.10th Apr 1918Box 42 \ 2  Scan023
Letter rejecting a patent carburetter design, outlining five points of failure for a modern aero engine.10th Apr 1918Box 42 \ 2  Scan024
Cancelling specific plug parts for the 'Eagle' engine hand starter.23th Apr 1918Box 42 \ 2  Scan025
Replacement parts for the 'Eagle' engine hand starter and starting handles.23th Apr 1918Box 42 \ 2  Scan026
Parts, testing, and production for a hand starter on 'Eagle' engines.26th Apr 1918Box 42 \ 2  Scan027
Modifications to hand starter casings for 'Eagle' engines.1st May 1918Box 42 \ 2  Scan028
The arrangement of a hand starter for 'Eagle' engines.2nd May 1918Box 42 \ 2  Scan029
Internal memorandum regarding hand starter arrangements for 'Eagle' engines.3rd May 1918Box 42 \ 2  Scan030
Confirming an experiment for a hand starter, operated from either side of the engine, has now become a production job.6th Jun 1918Box 42 \ 2  Scan031
Cancelling experiments for sheathed wires for seaplanes and an electrical water heating device.21th Jan 1918Box 42 \ 2  Scan032
Induction pipe tests, comparing six-cylinder pipes to four carburetters and planning future tests on an Eagle engine.4th Apr 1918Box 42 \ 2  Scan033
Extract discussing the use of a six-cylinder induction pipe to eliminate blowback and allow for a straight-through carburetter.23th Mar 1918Box 42 \ 2  Scan034
Cancellation notice for an experiment on Claudel type carburetters with a concentric ring float.13th Dec 1918Box 42 \ 2  Scan035
Requesting the experimental department to produce new rocker lever rollers from a different steel to prevent scoring.15th Apr 1918Box 42 \ 2  Scan036
Requesting an experiment on a new steel material for 'Falcon' engine rocker roller levers.16th Apr 1918Box 42 \ 2  Scan037
Requesting to expedite an experiment on rocker lever tappet rollers made from special ball bearing steel.14th May 1918Box 42 \ 2  Scan038
Confirming that Valve Rollers E.12101 have been fitted to the 'Hawk' Cam and Rocker.2nd Oct 1918Box 42 \ 2  Scan039
Valve rockers for K.E. J.B.S. which were trialled on a 'Hawk' engine and found to offer no advantage.8th Sep 1919Box 42 \ 2  Scan040
Mr. Burton's calculations for torque variation and stress on the 'Eagle' engine crankshaft.12th Apr 1918Box 42 \ 2  Scan041
Proposal for a stress-testing apparatus to determine the breaking point of a crankshaft.28th Apr 1917Box 42 \ 2  Scan042
Crank breakage, potentially caused by torsional vibration, and a request to rig up a testing apparatus.18th Apr 1918Box 42 \ 2  Scan043
Scheme for a rig and test pieces for static torsional tests on crankshaft journals.18th Apr 1918Box 42 \ 2  Scan044
Design of a three-cylinder oil pump for experimental crankshaft testing.13th Jul 1918Box 42 \ 2  Scan045
The construction of a pump, with a sketch and component specifications.13th Jul 1918Box 42 \ 2  Scan046
Design of an oil pump, valve chest, and base plate.1st Jul 1918Box 42 \ 2  Scan047
Mr. Royce's feedback on proposals for crankshaft and piston testing apparatus.26th Jul 1918Box 42 \ 2  Scan048
Modified rig for testing crankshaft stress and torque using oil pressure.15th Feb 1916Box 42 \ 2  Scan049
Technical letter discussing methods for piston and crankshaft testing, including oil pressure application and pump configuration.15th Feb 1916Box 42 \ 2  Scan050
Requesting to proceed with an experimental test on an apparatus as per Mr. Royce's wishes.15th Aug 1916Box 42 \ 2  Scan051
Schematic diagram of an oil pump and motor cylinder for a piston and crank test.23th Jul 1918Box 42 \ 2  Scan052
Preparation of 'Eagle' model crankshafts for a torsion test.4th Oct 1918Box 42 \ 2  Scan053
The tensile tests conducted on model Eagle engine cranks.11th Nov 1919Box 42 \ 2  Scan054
Torsion tests on H-shaped and U-shaped test pieces and their fracture analysis.26th Apr 1917Box 42 \ 2  Scan055
Results and conclusions from static torsion tests on various crank and shaft test pieces.11th Nov 1919Box 42 \ 2  Scan056
Proposal to test full-size aero engine cranks cut from scrap shafts.1st Nov 1919Box 42 \ 2  Scan057
And a diagram detailing torsion test results on a miniature crankshaft.27th Oct 1919Box 42 \ 2  Scan058
The reverse of a document with a 'Print Room' date stamp from Derby.30th Oct 1919Box 42 \ 2  Scan059
Performance comparison of the Goshawk 11 car against the 40/50 HP model and other 20 HP cars.13th Mar 1922Box 42 \ 2  Scan060
Comparative table of British, Continental, and American car engine specifications against the Goshawk model.16th Mar 1922Box 42 \ 2  Scan061


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