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 395 of 2367        Sort by   Box   Date   Description

Filter      from        to             identifier   [all]
DescriptionDateIdentifier
Letter from the S.U. Company discussing carburettor design, specifically the use of a separate jet for slow running.24th Aug 1931Box 31 \ 4  Scan068
Letter from The S.U. Company discussing engine tick-over, noise, and mixture strength.24th Aug 1931Box 31 \ 4  Scan069
Letter from the S.U. Company discussing carburetter over-enrichment issues during cold engine idling and potential solutions.27th Aug 1931Box 31 \ 4  Scan070
Letter from The S.U. Company regarding a sketch for a pipe to be used with an air cleaner or hot air supply for their carburetter.27th Aug 1931Box 31 \ 4  Scan071
Petrol consumption test results for S.U. and R.R. carburettors with handwritten notes for further testing.28th Aug 1931Box 31 \ 4  Scan072
Test report comparing an S.U. carburetter against a standard R.R. model, detailing road performance, fuel consumption, and piston positions.4th Sep 1931Box 31 \ 4  Scan073
Test report on a Solex carburetter, evaluating its performance against an S.U. carburetter.4th Sep 1931Box 31 \ 4  Scan074
Blueprint drawing of the controls for an S.U. Carburetter.10th Sep 1931Box 31 \ 4  Scan075
The rear of a document showing a purple date stamp.10th Sep 1931Box 31 \ 4  Scan076
Graph showing full throttle metering for a large S.U. carburettor with different needles.10th Sep 1931Box 31 \ 4  Scan077
Graph showing full throttle metering for a C.S. unit 110° camshaft with a short type Ph.II silencing system.16th Sep 1931Box 31 \ 4  Scan078
Heavily faded document with a purple 'Patents Derby' date stamp.16th Sep 1931Box 31 \ 4  Scan079
Letter to The S.U. Carburetter Co. discussing carburetter noise and performance improvements.31th Aug 1931Box 31 \ 4  Scan080
Letter to the S.U. Carburetter Co. regarding altering mixture strength by spring loading the piston.31th Aug 1931Box 31 \ 4  Scan081
Blueprint for a suggested air cleaner pipe for a carburettor air intake.27th Aug 1931Box 31 \ 4  Scan082
Letter from The S.U. Company discussing carburetter noise issues and potential solutions.1st Sep 1931Box 31 \ 4  Scan083
Letter to the S.U. Carburetter Co. regarding weakness issues with the H.V.5 type carburetter upon acceleration.10th Sep 1931Box 31 \ 4  Scan084
Page two of a letter discussing piston performance, weight and enquiring about a larger S.U. carburettor.10th Sep 1931Box 31 \ 4  Scan085
Graph of full throttle metering for an SU HVS Carburettor with 1 5/8 throttle.11th Sep 1931Box 31 \ 4  Scan086
Cover sheet with faint illegible handwritten text and a purple 'Print Room' date stamp.11th Sep 1931Box 31 \ 4  Scan087
Letter from The S.U. Company regarding the supply of carburetter needles and a carburetter.14th Sep 1931Box 31 \ 4  Scan088
Letter to The S.U. Company regarding the testing of carburettors and needles for a 7.5 litre model and a 25 HP model.21th Sep 1931Box 31 \ 4  Scan089
Letter from The S.U. Company quoting the price for a 1.5 inch carburetter.22th Sep 1931Box 31 \ 4  Scan090
Letter to S.U. Carburetter Co. regarding the return of unsuitable carburettors and a request for a larger version.25th Sep 1931Box 31 \ 4  Scan091
Despatch note for returning two loaned S.U. down-draught carburetters after experimental tests.28th Sep 1931Box 31 \ 4  Scan092
Letter from The S.U. Company regarding the development and production of carburetters.29th Sep 1931Box 31 \ 4  Scan093
Letter to The S.U. Company regarding a blueprint for a large carburetter and tests on smaller units.30th Sep 1931Box 31 \ 4  Scan094
Blueprint drawing of a 'China' induction pipe for downdraught S.U. carburettors.22th Sep 1931Box 31 \ 4  Scan095
Letter from The S.U. Company regarding the development of a separate slow running carburetter.1st Oct 1931Box 31 \ 4  Scan096
Cross-sectional diagram of an adjustable choke and mixture valve assembly for an induction pipe.5th Oct 1931Box 31 \ 4  Scan097
Trial and fitment of a large S.U. carburetter for the Phantom II.5th Oct 1931Box 31 \ 4  Scan098
Letter to the S.U. Carburetter Co. regarding a carburetter test for a 40/50 HP car.19th Oct 1931Box 31 \ 4  Scan099
Letter from The S.U. Company to Mr. Robotham regarding a run in an M.G.26th Oct 1931Box 31 \ 4  Scan100
Comparing power output from a single jet and expanding carburettor to a fixed choke diffuser type.28th Oct 1931Box 31 \ 4  Scan101
Photograph of a carburettor and ancillary component assembly.28th Oct 1931Box 31 \ 4  Scan102
Photograph of a supercharger and carburettor assembly with a ruler placed on top for scale.28th Oct 1931Box 31 \ 4  Scan103
Performance comparison graph of S.U. and Claudel carburettors with different induction pipes.28th Oct 1931Box 31 \ 4  Scan104
Heavily faded and damaged document with a purple date stamp in the bottom right corner.28th Oct 1931Box 31 \ 4  Scan105
Letter to The S.U. Carburetter Co. regarding carburetter fitting and distribution problems.29th Oct 1931Box 31 \ 4  Scan106
Request to test a 1 3/8' throttle diameter vertical carburetter on an induction pipe.29th Oct 1931Box 31 \ 4  Scan107
Letter from The S.U. Company discussing carburetter performance, hot spots, fuel consumption, and arranging a car test.2nd Nov 1931Box 31 \ 4  Scan108
Letter from The S.U. Company regarding a 1 7/8' throttle carburetter.19th Nov 1931Box 31 \ 4  Scan109
Development of a new single semi-expanding carburetter to replace the common S.U. type.19th Nov 1931Box 31 \ 4  Scan110
Argument for a single carburetter design over S.U. and down-draught types, citing reliability and safety.10th Nov 1931Box 31 \ 4  Scan111
Letter to S.U. Carburetter Co. Ltd. concerning distribution issues on the 40/50 model and a criticism from Sir Henry Royce.14th Nov 1931Box 31 \ 4  Scan112
Letter discussing test results for the 40/50 model, induction systems, and a petro-lift.14th Nov 1931Box 31 \ 4  Scan113
Technical memorandum discussing carburettor configurations and development for various engine types.16th Nov 1931Box 31 \ 4  Scan114
Letter from The S.U. Company regarding carburetter distribution troubles and wear criticism.16th Nov 1931Box 31 \ 4  Scan115
Continuation page of a letter from The S.U. Company.23th Nov 1931Box 31 \ 4  Scan116
Instruction to fit a vertical S.U. carburetter to induction pipe V.1207, making it interchangeable with the existing Claudel Hobson carburetter.23th Nov 1931Box 31 \ 4  Scan117
Letter from The S.U. Company regarding an enquiry received from The Margaretting Motor Works.25th Nov 1931Box 31 \ 4  Scan118
Letter from The S.U.CO. responding to an enquiry about carburettor options for a six-cylinder engine.25th Nov 1931Box 31 \ 4  Scan119
Inquiry from a motor works to a carburettor company regarding a single versus twin carburettor setup for a 6-cylinder car.24th Nov 1931Box 31 \ 4  Scan120
Letter to The S.U. Carburetter Co. discussing the suitability of their carburetter for the standard 40/50 unit.27th Nov 1931Box 31 \ 4  Scan121
Letter from T.C. Skinner of The S.U. Company to W.A. Robotham, deciding to take no further action on a previously discussed matter.28th Nov 1931Box 31 \ 4  Scan122
Letter to the S.U. Carburetter Co. requesting assistance for an ex-apprentice's custom car.8th Dec 1931Box 31 \ 4  Scan123
Letter from The S.U. Company to W.A. Robotham regarding assisting Mr. Harker.9th Dec 1931Box 31 \ 4  Scan124
Tests comparing vertical and horizontal S.U. carburetors for fuel distribution.10th Dec 1931Box 31 \ 4  Scan125
Performance graph comparing two vertical SU carburetor distribution setups, A and B, across a range of RPMs.10th Dec 1931Box 31 \ 4  Scan126
Drawing of a central lubrication system pump, showing top and side elevations with pipe connections.10th Dec 1931Box 31 \ 4  Scan127
Drawing of an induction pipe for a 30 HP T.T. car, showing multiple views and dimensions.12th Dec 1931Box 31 \ 4  Scan128
Letter from The S.U. Company regarding a delay in dispatching a pair of carburettors due to specific finishing requirements.12th Dec 1931Box 31 \ 4  Scan129
Letter to The S.U. Company regarding the finish and supply of two 1 3/4 inch carburettors for Sir Henry Royce's consideration.14th Dec 1931Box 31 \ 4  Scan130
Letter from The S.U. Company regarding Sir Henry's opinion on carburettors.15th Dec 1931Box 31 \ 4  Scan131
Letter from The S.U. Company enclosing a report on carburetter tests conducted on various Morris cars.18th Dec 1931Box 31 \ 4  Scan132
Letter to the S.U. Company discussing carburetter tests, performance issues with large S.U. carburetters, and proposed solutions.19th Dec 1931Box 31 \ 4  Scan133
Requesting the fabrication of a modified pipe for a Japan 1 cast iron head, based on results from two S.U. carburettors.19th Dec 1931Box 31 \ 4  Scan134
Letter from The S.U. Company regarding a visit and a query about the load on a piston in the suction chamber.21th Dec 1931Box 31 \ 4  Scan135
Letter to Mr. Skinner of The S.U. Company to arrange a meeting regarding carburetter tests.29th Dec 1931Box 31 \ 4  Scan136
Letter to Mr. Skinner of The S.U. Company arranging a meeting to discuss carburettors.31th Dec 1931Box 31 \ 4  Scan137
Letter to Mr. Skinner of The S.U. Company requesting a double S.U. petrolift as the single version was inadequate.2nd Jan 1932Box 31 \ 4  Scan138
Letter from The S.U. Company to Mr. Robotham arranging a meeting.4th Jan 1932Box 31 \ 4  Scan139
Letter from The S.U. Company arranging the delivery of a Duplex Petrolift.5th Jan 1932Box 31 \ 4  Scan140
Request to obtain two Smith air silencers for 1 3/4' S.U. carburetters from a supplier in Yorkshire.1st Jan 1932Box 31 \ 4  Scan141
Request to transfer S.U. carburetters from experimental car 27-EX to 22-EX for adjustment.15th Jan 1932Box 31 \ 4  Scan142
Letter to S.U. Carburetter Co. requesting weaker carburetter needles and noting the fitting of air silencers.27th Jan 1932Box 31 \ 4  Scan143
Urgent internal request to obtain two Smith air silencers for S.U. carburettors.27th Jan 1932Box 31 \ 4  Scan144
Query regarding the force required to operate the jet seatings on S.U. Carburetters.29th Jan 1932Box 31 \ 4  Scan145
Letter to the S.U. Company requesting a carburetter needle change on a 20/25 HP car.29th Jan 1932Box 31 \ 4  Scan146
Letter from The S.U. Company confirming a 20/25 HP car will be brought to their works on Monday.30th Jan 1932Box 31 \ 4  Scan147
The force required to operate the jet seatings on S.U. Carburetters.4th Feb 1932Box 31 \ 4  Scan148
Letter to S.U. Carb. Company requesting the supply of four specific carburetter needles.4th Feb 1932Box 31 \ 4  Scan149
Request to S.U. Carburetter Company to send a sample 1 3/4' throttle carburetter to Cadillac for Mr. Olley.24th Feb 1932Box 31 \ 4  Scan150
Holding letter from The S.U. Company acknowledging receipt of a letter and advising a full reply will follow.25th Feb 1932Box 31 \ 4  Scan151
Letter to S.U. Carb. Company reporting a failure of an S.U. petrolift after 12,000 miles on a 25HP car and requesting a replacement.25th Apr 1932Box 31 \ 4  Scan152
Letter to the S.U. Carburetter Company regarding a faulty Morris Petrol Pump.25th Apr 1932Box 31 \ 4  Scan153
Letter from The S.U. Company regarding a failing Petrolift pump and its subsequent redesign.26th Apr 1932Box 31 \ 4  Scan154
Letter from The S.U. Company regarding the failure analysis of a Petrolift pump.28th Apr 1932Box 31 \ 4  Scan155
Receipt of two Petrolift pumps and asking for instruction on what to do with the surplus unit.28th Apr 1932Box 31 \ 4  Scan156
Returning a faulty S.U. Petrolift and a related failure report.5th May 1932Box 31 \ 4  Scan157
Letter to The S.U. Company regarding a filter failure caused by an over-tightened nut.3rd May 1932Box 31 \ 4  Scan158
Letter from The S.U. Company regarding a returned Petrolift pump with a buckled inlet ring.28th Apr 1932Box 31 \ 4  Scan159
Letter to the S.U. Company discussing Petrolift performance, carburetter testing, and a potential patent issue.7th May 1932Box 31 \ 4  Scan160
The second page of a letter thanking a supplier for carburetters.10th May 1932Box 31 \ 4  Scan161
Letter from The S.U. Company regarding a decision on the S.U. Carburetter and criticism of the Petrolift pump.10th May 1932Box 31 \ 4  Scan162
Request for information on patents held by Mr. Skinner for the S.U. carburetter central guide.23th May 1932Box 31 \ 4  Scan163
Letter to the S.U. Company about using their carburettors on supercharged Bentley engines and petrol lifts.23th May 1932Box 31 \ 4  Scan164
Performance of Eyston's M.G. on the track.23th May 1932Box 31 \ 4  Scan165
Acknowledging the receipt of a specification from a Mr. Skinner.24th May 1932Box 31 \ 4  Scan166
Letter from The S.U. Company discussing carburetter performance, sizing, and filters.24th May 1932Box 31 \ 4  Scan167


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