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
The performance of a 1 5/8 S.U. carburetter on a 20/25 HP engine.5th Oct 1933Box 31 \ 5  Scan114
Modifications and road trials of an S.U. carburetter for a 20/25 HP unit.1st Oct 1933Box 31 \ 5  Scan115
Blueprint diagram of a 1 5/8 S.U. Carburetter.5th Oct 1933Box 31 \ 5  Scan116
Blank document page with a purple 'Print Room' stamp from Derby.5th Oct 1933Box 31 \ 5  Scan117
Blueprint detailing the modification of a 1 5/8 inch S.U. carburetor piston.5th Oct 1933Box 31 \ 5  Scan118
Stamped document from the print room in Derby.5th Oct 1933Box 31 \ 5  Scan119
Requesting further tests on a 1¾' S.U. Carburetter for the 20/25 model.11th Oct 1933Box 31 \ 5  Scan120
Letter from The S.U. Company confirming the dispatch of three pairs of damping devices for S.U. Carburetters.20th Oct 1933Box 31 \ 5  Scan121
Letter to S.U.Co. proposing a modification to Bentley carburettors using a dowel to secure the float chamber.20th Oct 1933Box 31 \ 5  Scan122
Dynamometer test report on the autovac fuel supply for an S.U. Carburetter on an 18.G.IV model.26th Oct 1933Box 31 \ 5  Scan123
Test results showing petrol level loss in the Autovac at various engine speeds while running on reserve fuel.26th Oct 1933Box 31 \ 5  Scan124
Performance of the autovac fuel system versus the S.U. carburetter on the 20/25 model.26th Oct 1933Box 31 \ 5  Scan125
Replacing collapsing fibre washers with soft aluminium ones between the floatchamber and throttle bodies.7th Nov 1933Box 31 \ 5  Scan126
Cover note for a report on the inspection and testing of an S.U. electric petrol pump for a Bentley chassis.14th Nov 1933Box 31 \ 5  Scan127
Letter to S.U. Company Ltd. requesting the fitting of RR.X needles in all future carburetters.16th Nov 1933Box 31 \ 5  Scan128
Letter from The S.U. Company confirming that all future carburettors will be fitted with RR.X. needles.17th Nov 1933Box 31 \ 5  Scan129
Letter to the S.U. Company requesting the manufacture of four experimental carburetter needles with specified dimensions.21th Nov 1933Box 31 \ 5  Scan130
Letter from The S.U. Company regarding the supply of needles for experiments with a 1 5/8 inch carburetter.22th Nov 1933Box 31 \ 5  Scan131
Letter from the Experimental Dept. to S.U. Company Ltd. thanking them for a letter and for needles.24th Nov 1933Box 31 \ 5  Scan132
Letter to The S.U. Co. Ltd. requesting experimental carburetor needles with specific dimensions for a 3½ litre Bentley.27th Dec 1933Box 31 \ 5  Scan133
Letter from The S.U. Company to Mr. Robotham confirming that needles are being sent.28th Dec 1933Box 31 \ 5  Scan134
Letter to The S.U. Company acknowledging receipt of needles and redirecting future communications regarding carburettors or petrol pumps.29th Dec 1933Box 31 \ 5  Scan135
Letter to S.U. Carburetter Co. Ltd. requesting needles with specific dimensions for experiments on a 3 1/2 Litre Bentley.12th Jan 1934Box 31 \ 5  Scan136
Letter to The S.U. Carburetter Co. requesting two pairs of needles with specified dimensions for Bentley induction system carburetters.25th Jan 1934Box 31 \ 5  Scan137
Letter to The S.U. Carburetter Co. requesting the manufacture of two new pairs of carburettor needles with modified measurements.1st Feb 1934Box 31 \ 5  Scan138
Letter from The S.U. Company acknowledging receipt of an order.2nd Feb 1934Box 31 \ 5  Scan139
Postcard from 1934 addressed to the company in Derby.5th Mar 1934Box 31 \ 5  Scan140
Letter to The S.U. Carburetter Co. Ltd. requesting two further pairs of 'XA1' and 'XA2' needles to specific dimensions.6th Feb 1934Box 31 \ 5  Scan141
Acknowledgement of an order from The S.U. Company.7th Feb 1934Box 31 \ 5  Scan142
Pre-addressed postcard to the company's Derby office.28th Feb 1934Box 31 \ 5  Scan143
Request to the S.U. Carburetter Co. for two pairs of needles with specific dimensions for experiments.28th Feb 1934Box 31 \ 5  Scan144
Requesting to expedite the production of S.U. Carburettor Float Chamber Lids.28th Feb 1934Box 31 \ 5  Scan145
Test report on an Induction Pipe (LEC.3637) and S.U. Carburetter for a 25 HP Type Cylinder Head.7th Mar 1934Box 31 \ 5  Scan146
Analysis of engine performance and distribution with different pipe arrangements and throttle settings.7th Mar 1934Box 31 \ 5  Scan147
Performance curve graph comparing two induction pipes on a 20/25 HP cylinder head.7th Mar 1934Box 31 \ 5  Scan148
Blank page with a 'Print Room' stamp from Derby.10th Sep 1934Box 31 \ 5  Scan149
Performance graph comparing different configurations of a 1 5/8 inch SU carburettor on a standard 25 HP cylinder head.7th Mar 1934Box 31 \ 5  Scan150
Blank page with a Print Room date stamp from Derby.10th Sep 1934Box 31 \ 5  Scan151
Experimental induction pipe for a 25 HP type cylinder head.10th Sep 1934Box 31 \ 5  Scan152
Letter to the S.U. Carburetter Co. requesting production of carburetter needles with specific dimensions.4th Apr 1934Box 31 \ 5  Scan153
Visit to S.U. Carburetter Co. regarding a horizontal carburetter for the 20/25 model.11th Apr 1934Box 31 \ 5  Scan154
Carburetter remedies and development considerations by the S.U. Co., focusing on piston lift and component sizing.16th Apr 1934Box 31 \ 5  Scan155
Letter to S.U. Carburetter Co. requesting the production of 6 carburettor needles to specific dimensions.16th Apr 1934Box 31 \ 5  Scan156
Letter from S.U. Carburetter Company confirming an order for six needles.17th Apr 1934Box 31 \ 5  Scan157
Follow-up letter from S. Smith & Sons regarding an Automatic Jet Control on loan.24th Apr 1934Box 31 \ 5  Scan158
Letter from The S.U. Company regarding an issue with petrol squirting from the float chamber and suggesting a brass cowl as a solution.4th May 1934Box 31 \ 5  Scan159
Letter from The S.U. Company regarding incorrect carburetter needle seats supplied and arranging for replacements.10th May 1934Box 31 \ 5  Scan160
Letter to S.U.Co. proposing modifications to Bentley carburetters to prevent fires, with enclosed blueprints.11th May 1934Box 31 \ 5  Scan161
Letter to Messrs. S.U. Co. discussing design modifications to an S.U. carburettor for a 20/25 HP chassis.11th May 1934Box 31 \ 5  Scan162
Request to the S.U. Carburetter Co. for 6 experimental needles with specified dimensions for a 1§ type carburetter.15th May 1934Box 31 \ 5  Scan163
Letter from The S.U. Company regarding a delay in supplying chromium-plated Banjo Unions for Float Lids.17th May 1934Box 31 \ 5  Scan164
Letter to S.U. Carburetter Company Ltd. regarding a meeting to discuss carburetter modifications.18th May 1934Box 31 \ 5  Scan165
Letter to the S.U. Carburetter Company regarding a carburetter application for the Kestrel VI Aero Engine.24th May 1934Box 31 \ 5  Scan166
Letter forwarding drawings of a supercharger casing and carburetter for an engine in its design state.24th May 1934Box 31 \ 5  Scan167
Order for one S.U. Aero Engine Carburetter for a Kestrel VI engine.30th May 1934Box 31 \ 5  Scan168
Quotation from The S.U. Company for carburetter parts for the Kestrel Six engine.29th May 1934Box 31 \ 5  Scan169
Letter to the S.U. Carburetter Company regarding carburetter layout for the Kestrel Vl engine.30th May 1934Box 31 \ 5  Scan170
Internal request to order a set of Bentley Carburetors, a Petrol Pump, Staybright Needles and seatings from the S.U. Co.30th May 1934Box 31 \ 5  Scan171
Agreement to purchase two sets of S.U. carburettors for Goshawk and Kestrel VI engines.7th Jun 1934Box 31 \ 5  Scan172
Letter from The S.U. Company regarding pattern drawings for supercharger casing alterations.7th Jun 1934Box 31 \ 5  Scan173
Request to The S.U. Carburetter Co. for six experimental needles for a 20/25 Horizontal carburetter.7th Jun 1934Box 31 \ 5  Scan174
Letter from The S.U. Company confirming the handover of six needles to a representative.8th Jun 1934Box 31 \ 5  Scan175
Letter to the S.U. Carburetter Company requesting additional prints for alterations to a blower casing.8th Jun 1934Box 31 \ 5  Scan176
Letter from the S.U. Company regarding the provision of blueprints showing alterations to a blower casing to adapt an S.U. Carburetter.9th Jun 1934Box 31 \ 5  Scan177
Letter to T.C. Skinner of The S.U. Company confirming a visit to discuss cork clutches with Morris Specialists.9th Jun 1934Box 31 \ 5  Scan178
Letter from The S.U. Company concerning drawings for a carburetter for the 'Kestrel' engine.11th Jun 1934Box 31 \ 5  Scan179
Letter to The S.U. Company requesting an expected delivery for a pair of Bentley Carburetters and a Petrol Pump.14th Jun 1934Box 31 \ 5  Scan180
Letter from The S.U. Company regarding the supply of carburetter and pump castings.15th Jun 1934Box 31 \ 5  Scan181
Letter from The S.U. Company regarding blueprints for the Kestrel engine carburetter.15th Jun 1934Box 31 \ 5  Scan182
To Mr. Marriot regarding arrangements for anti-corrosion treatment of Bentley carburettor and petrol pump castings.21th Jun 1934Box 31 \ 5  Scan183
Sample of an S.U. Tap now being made by Benton & Stone.21th Jun 1934Box 31 \ 5  Scan184
Letter from Benton & Stone Ltd. regarding a diaphragm tap sample sent for consideration.20th Jun 1934Box 31 \ 5  Scan185
Packing note from Benton & Stone Ltd. for a single diaphragm safe.20th Jun 1934Box 31 \ 5  Scan186
Arrangement with S.U.Co. for the production of needles for the new 20/25 horizontal carburetter.21th Jun 1934Box 31 \ 5  Scan187
Letter to The S.U. Carburetter Co. requesting the supply of six needles marked 'XB8' with specified dimensions.21th Jun 1934Box 31 \ 5  Scan188
Letter to The S.U. Carburetter Co. Ltd. regarding progress on patterns for a carburetter designed for Kes.Vl.21th Jun 1934Box 31 \ 5  Scan189
Letter to The S.U. Carburetter Co. Ltd. regarding carburettor flooding and anti-corrosion treatment.22th Jun 1934Box 31 \ 5  Scan190
Typed letter discussing fuel pump flooding and a sticking diaphragm issue.22th Jun 1934Box 31 \ 5  Scan191
Letter from The S.U. Company confirming they are arranging to send requested needles.22th Jun 1934Box 31 \ 5  Scan192
Request to send a complete set of parts for an S.U. carburettor's automatic mixture control to the British Thermoflex Co.22th Jun 1934Box 31 \ 5  Scan193
Corrosion of S.U. carburetter and petrol pump components and arranging for their treatment.22th Jun 1934Box 31 \ 5  Scan194
Complaint listing six quality and finish issues with S.U. Carburetters being delivered.25th Jun 1934Box 31 \ 5  Scan195
Letter from The S.U. Company regarding carburetter component issues such as flooding and sticking diaphragms.25th Jun 1934Box 31 \ 5  Scan196
Letter to The S.U. Company inquiring about the availability of a larger capacity pump and other parts.26th Jun 1934Box 31 \ 5  Scan197
Supply of S.U. needles for a modified 25 carburetter and the affixing of a patent plate.27th Jun 1934Box 31 \ 5  Scan198
Requesting to know when drawings for S.U. carburettors will be available to proceed with a contract.27th Jun 1934Box 31 \ 5  Scan199
Letter to The S.U. Carburetter Company providing the address for 'Spontan' Gear specialists, A.C. Wickman Ltd.27th Jun 1934Box 31 \ 5  Scan200
Letter from The S.U. Company regarding the preparation of a general arrangement drawing for an R.R. S.U. carburetter.27th Jun 1934Box 31 \ 5  Scan201
Letter from The S.U. Company clarifying specific features of their carburetter apparatus in response to an enquiry.28th Jun 1934Box 31 \ 5  Scan202
Patent and design acknowledgements for the 20/25 HP S.U. type carburetter.28th Jun 1934Box 31 \ 5  Scan203
Carburetter proposals with Mr. Skinner, involving specific models and attached blueprints.28th Jun 1934Box 31 \ 5  Scan204
Letter to Mr Skinner of S.U. Co. regarding a delay and proposal for riveting a warning plate to the 20/25 carburetter.28th Jun 1934Box 31 \ 5  Scan205
S.U. Needles for the modified 20/25 HP Carburetter.28th Jun 1934Box 31 \ 5  Scan206
The 20/25 HP S.U. Type Carburettor.29th Jun 1934Box 31 \ 5  Scan207
Promised carburetter arrangement from the S.U. Company.29th Jun 1934Box 31 \ 5  Scan208
Letter to The S.U. Carburetter Company regarding a potential patent infringement claim by Claudel Hobson Ltd.29th Jun 1934Box 31 \ 5  Scan209
Letter from The S.U. Company enclosing a blueprint (SUX 17) for a carburetter for the Kestrel engine.29th Jun 1934Box 31 \ 5  Scan210
S.U. Needles for the modified 20/25 HP Carburetter.30th Jun 1934Box 31 \ 5  Scan211
Letter from The S.U. Company regarding a conversation with Mr. Dodson and a patent from 1917.2nd Jul 1934Box 31 \ 5  Scan212
Correspondence to Mr. Skinner of S.U.Co. agreeing to a proposal to add a plate to the carburetter.3rd Jul 1934Box 31 \ 5  Scan213
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