| Description | Date | Identifier | |
| Order to be placed with S.U. Carburetter Co. Ltd. | 27th Oct 1938 | Box 121 \ 4 scan0224 | |
| Letter to S.U. Carburetter Co. Ltd. regarding troubleshooting a 'flat-spot' with H.4 carburetters on a 4 1/2-litre Bentley. | 27th Oct 1938 | Box 121 \ 4 scan0225 | |
| Page 2 of a letter to The S.U. Carburetter Co. regarding a temporary fix for a flat spot on cars. | 27th Oct 1938 | Box 121 \ 4 scan0226 | |
| Letter from The S.U. Carburetter Co. Ltd. regarding piston dampers, needles, and fuel discharge differences between jet sizes. | 29th Oct 1938 | Box 121 \ 4 scan0227 | |
| Letter from S.U. Carburetter Co. regarding trials with different sized carburettor jets. | 29th Oct 1938 | Box 121 \ 4 scan0228 | |
| Purchase order for 4 Oil Damper Assemblies from The S.U. Carburetter Co. Ltd. | 1st Nov 1938 | Box 121 \ 4 scan0229 | |
| Letter to the S.U. Carburetter Co. Ltd. requesting different carburettor needles for a 4 1/4-litre Bentley. | 1st Nov 1938 | Box 121 \ 4 scan0230 | |
| Order for carburettor components from The S.U. Carburetter Co. Ltd. | 12th Nov 1938 | Box 121 \ 4 scan0231 | |
| Requesting an order be issued to cover parts already received with an attached delivery note. | 12th Nov 1938 | Box 121 \ 4 scan0232 | |
| Letter to the S.U. Carburetter Co. Ltd. confirming the addition of banjo connections to the specification for H.4 type carburettors. | 12th Nov 1938 | Box 121 \ 4 scan0233 | |
| Authorising payment of charges against a specific order number. | 22th Nov 1938 | Box 121 \ 4 scan0234 | |
| Request to send an order to The S.U. Carburetter Co. Ltd. for one dozen throttle stops. | 24th Nov 1938 | Box 121 \ 4 scan0235 | |
| Letter from the Experimental Department to S.U. Carburetter Co. Ltd. requesting a dozen throttle stops. | 24th Nov 1938 | Box 121 \ 4 scan0236 | |
| Letter to the S.U. Carburetter Co. regarding cold starting issues and suggesting design improvements. | 28th Nov 1938 | Box 121 \ 4 scan0237 | |
| Letter discussing a recurring issue with jet tubes and cork glands in the H.4 carburetter. | 28th Nov 1938 | Box 121 \ 4 scan0238 | |
| Letter from The S.U. Carburetter Co. Ltd. responding to issues with a thermostatic carburettor. | 29th Nov 1938 | Box 121 \ 4 scan0239 | |
| Internal request to order carburetter parts from The S.U. Carburetter Co. Ltd. | 30th Nov 1938 | Box 121 \ 4 scan0240 | |
| Letter to The S.U. Carburetter Co. Ltd. requesting a supply of various carburetter parts and modifications. | 30th Nov 1938 | Box 121 \ 4 scan0241 | |
| Letter to the S.U. Carburetter Co. regarding carburetter parts including dampers, dash pots, and cork glands. | 29th Dec 1938 | Box 121 \ 4 scan0242 | |
| Order be sent to The S.U. Carburetter Co. Ltd. for air valves. | 29th Dec 1938 | Box 121 \ 4 scan0243 | |
| Letter to The S.U. Carburetter Co. Ltd. requesting the dispatch of air valves and dampers to the Paris depot. | 30th Dec 1938 | Box 121 \ 4 scan0244 | |
| Letter from S.U. Carburetter Co. Ltd. regarding carburetter float chamber seatings for a Bentley. | 5th Jan 1939 | Box 121 \ 4 scan0245 | |
| Continuation page of a letter from The S.U. Carburetter Co. Ltd. regarding carburetter seatings. | 6th Jan 1939 | Box 121 \ 4 scan0246 | |
| Internal request to send a covering order to S.U. Carburetter Co. Ltd. for parts for a Paulin Bentley. | 6th Jan 1939 | Box 121 \ 4 scan0247 | |
| Letter to S.U. Carburetter Co. Ltd. regarding issues with floatchamber needles and seatings and ordering replacements. | 6th Jan 1939 | Box 121 \ 4 scan0248 | |
| Letter of complaint to The S.U. Carburetter Co. Ltd. regarding delays with an order for air valves for experimental work. | 18th Jan 1939 | Box 121 \ 4 scan0249 | |
| Letter from The S.U. Carburetter Co. Ltd. regarding a delayed and misdirected order for air valves and castings. | 19th Jan 1939 | Box 121 \ 4 scan0250 | |
| Continuation of a letter from The S.U. Carburetter Co. Ltd. regarding a delayed shipment to Paris. | 20th Jan 1939 | Box 121 \ 4 scan0251 | |
| Letter from S.U. Carburetter Co. Ltd. about the impracticality of modifying a die casting for a Thermostatic Float Chamber. | 20th Jan 1939 | Box 121 \ 4 scan0252 | |
| Internal request to place an order for two H.V.S. suction chambers with S.U. Carburetter Co. Ltd. | 24th Jan 1939 | Box 121 \ 4 scan0253 | |
| Modification of an air intake bend for the Continental Bentley V. | 7th Feb 1939 | Box 121 \ 4 scan0254 | |
| Request to The S.U. Carburetter Co. Ltd. for the supply of three pairs of 'AF' needles. | 9th Feb 1939 | Box 121 \ 4 scan0255 | |
| Letter from S.U. Carburetter Co. Ltd. and a previous request for an order. | 13th Feb 1939 | Box 121 \ 4 scan0256 | |
| Letter to S.U. Carburetter Co. Ltd. requesting prints of drawings for a 1.750 throttle carburetter. | 23th Feb 1939 | Box 121 \ 4 scan0257 | |
| Order for carburettors and jaws from The S.U. Carburetter Co. Ltd. | 28th Feb 1939 | Box 121 \ 4 scan0258 | |
| Letter to S.U. Carburetter Co. Ltd. confirming they will supply a sample carburetter. | 4th Mar 1939 | Box 121 \ 4 scan0259 | |
| Letter to The S.U. Carburetter Co. ordering various carburetter parts and drawings. | 16th Mar 1939 | Box 121 \ 4 scan0260 | |
| Order to be sent to The S.U. Carburetter Co. Ltd. for six float chamber bolts. | 29th Mar 1939 | Box 121 \ 4 scan0261 | |
| Requesting a revised design for the B.V. Induction System to accommodate fully automatic mixture control on S.U. carburettors. | 1st Apr 1939 | Box 121 \ 4 scan0262 | |
| Letter to S.U. Carburetter Co. regarding H.V.5 carburetter production, a float mechanism issue, and a request for needles. | 20th Apr 1939 | Box 121 \ 4 scan0263 | |
| Internal request to place an order for 12 needles with The S.U. Carburetter Co. Ltd. | 21th Apr 1939 | Box 121 \ 4 scan0264 | |
| Letter from S.U. Carburetter Co. Ltd. requesting an official order for 12 B.3D needles. | 21th Apr 1939 | Box 121 \ 4 scan0265 | |
| Internal order request for 6 needles from The S.U. Carburetter Co. Ltd. | 27th Apr 1939 | Box 121 \ 4 scan0266 | |
| Letter to S.U. Carburetter Co. Ltd. regarding an issue with piston guides coming loose on H.4 carburetters. | 4th May 1939 | Box 121 \ 4 scan0267 | |
| Letter from S.U. Carburetter Co. Ltd. regarding a loose brass piston key on experimental H4 carburetters. | 5th May 1939 | Box 121 \ 4 scan0268 | |
| Letter to the S.U. Carburetter Co. Ltd. regarding the quality and shrinkage of fibre washers used in float chambers. | 8th May 1939 | Box 121 \ 4 scan0269 | |
| Letter from S.U. Carburetter Co. Ltd. discussing an improved special carburetter control and an attached drawing of the scheme. | 8th May 1939 | Box 121 \ 4 scan0270 | |
| Letter from The S.U. Carburetter Co. Ltd. concerning fibre washers for H.4. carburetters. | 9th May 1939 | Box 121 \ 4 scan0271 | |
| Letter to S.U. Carburetter Co. Ltd. detailing issues with H.4. carburettors for future Bentley production. | 11th May 1939 | Box 121 \ 4 scan0272 | |
| Page 2 of a letter to S.U. Carburetter Co. Ltd. regarding experimental work. | 11th May 1939 | Box 121 \ 4 scan0273 | |
| Letter from S.U. Carburetter Co. Ltd. discussing carburetter freezing issues and an invitation to visit their works. | 12th May 1939 | Box 121 \ 4 scan0274 | |
| Letter to the S.U. Carburetter Co. Ltd. regarding a change in washer material for the H.4 carburetter. | 20th May 1939 | Box 121 \ 4 scan0275 | |
| Request to issue a covering order for a pair of H4 carburettors. | 31th May 1939 | Box 121 \ 4 scan0276 | |
| Letter to The S.U. Carburetter Co. Ltd. requesting two pairs of modified carburettors for a high-power engine unit. | 12th Jun 1939 | Box 121 \ 4 scan0277 | |
| Order for starter carburetter needles from The S.U. Carburetter Co. | 17th Jun 1939 | Box 121 \ 4 scan0278 | |
| Request from the Experimental Department to S.U. Carburetter Co. Ltd. for the supply of starter carburetter needles. | 17th Jun 1939 | Box 121 \ 4 scan0279 | |
| Order to be sent to The S.U. Carburetter Co. Ltd. for two pairs of H.6. carburetters. | 27th Jun 1938 | Box 121 \ 4 scan0280 | |
| Order for 12 needles (WO3) from S.U. Carburetter Co. Ltd. | 30th Jun 1939 | Box 121 \ 4 scan0281 | |
| Request to S.U. Carburetter Co. Ltd. for the supply of 6 pairs of H.6. carburetters with specific modifications. | 30th Jun 1939 | Box 121 \ 4 scan0282 | |
| Internal request to place an order for 6 pairs of H.6. carburetter specifications. | 30th Jun 1939 | Box 121 \ 4 scan0283 | |
| Request for a specification drawing for an H.6 carburetter for the Bentley 'Corniche'. | 30th Jun 1939 | Box 121 \ 4 scan0284 | |
| The unsatisfactory performance of a Zenith carburettor and back axle on a Metallurgique car. | 22th Nov 1910 | Box 122 \ 1 scan0001 | |
| Design and lubrication issues with a car's axles, universal joints, connecting rods, and engine. | 22th Nov 1910 | Box 122 \ 1 scan0002 | |
| Letter discussing engine crank-shaft vibration, chassis performance, and a comparison with a Metallurgique car. | 4th Oct 1920 | Box 122 \ 1 scan0003 | |
| Letter from Zenith Carburetter Co. Ltd. detailing recent motorsport successes. | 4th Oct 1920 | Box 122 \ 1 scan0004 | |
| Phantom induction pipe and suggesting various new carburettor configurations. | 20th Feb 1927 | Box 122 \ 1 scan0005 | |
| The procurement of two Zenith triple diffuser carburetters. | 2nd Apr 1927 | Box 122 \ 1 scan0006 | |
| Request for an instrument board light, Zenith carburetters, and a price list for spot lights. | 12th Apr 1927 | Box 122 \ 1 scan0007 | |
| Requesting information on available sizes for a specific Zenith carburetter type (42-HK). | 14th Apr 1927 | Box 122 \ 1 scan0008 | |
| Letter requesting to trial two carburetters on a 20 HP car engine. | 28th May 1927 | Box 122 \ 1 scan0009 | |
| Continuation of a letter discussing desired engine performance and testing single vs dual carburettors. | 28th Jun 1927 | Box 122 \ 1 scan0010 | |
| Letter from The Zenith Carburetter Co. Ltd. requesting a test report on two No.42HK carburettors. | 28th Jun 1927 | Box 122 \ 1 scan0011 | |
| Request to send a triple diffuser Zenith carburetter for examination. | 22th Jul 1927 | Box 122 \ 1 scan0012 | |
| Letter from Stromberg Motor Devices Ltd. following up on carburetors sent for testing on a 20 HP engine. | 3rd Aug 1927 | Box 122 \ 1 scan0013 | |
| Confirming the dispatch of a Zenith triple diffuser carburetter for experimental work. | 9th Aug 1927 | Box 122 \ 1 scan0014 | |
| The despatch of a Zenith triple diffuser carburetter on loan to Mr. Royce. | 9th Aug 1927 | Box 122 \ 1 scan0015 | |
| Letter from Stromberg Motor Devices Ltd. regarding the testing of two Stromberg carburetors. | 15th Aug 1927 | Box 122 \ 1 scan0016 | |
| Letter to Stromberg Motor Devices Ltd. regarding preliminary tests and road testing of experimental carburettors. | 16th Aug 1927 | Box 122 \ 1 scan0017 | |
| Letter from Stromberg Motor Devices arranging for an engineer to assist with carburetor adjustments. | 18th Aug 1927 | Box 122 \ 1 scan0018 | |
| Letter from Maurice Olley in America to E. W. Hives in Derby describing the features of the latest American Stromberg carburetter. | 19th Aug 1927 | Box 122 \ 1 scan0019 | |
| Poor slow running performance of the 20 HP engine and proposing a test using a Zenith carburetter. | 28th Aug 1928 | Box 122 \ 1 scan0020 | |
| Letter from Stromberg Motor Devices Ltd. regarding carburettor adjustments for a 20 HP car on test. | 15th Sep 1927 | Box 122 \ 1 scan0021 | |
| Letter from Rolls-Royce of America discussing carburetter performance issues and potential improvements on Phantom and Silver Ghost cars. | 20th Sep 1927 | Box 122 \ 1 scan0022 | |
| Letter discussing issues with annular jets on the Silver Ghost and Phantom models, and requesting a new 'straight through' carburetter. | 20th Sep 1927 | Box 122 \ 1 scan0023 | |
| Letter to Stromberg Motor Devices Ltd. about the readiness of a car fitted with a carburetter. | 23th Sep 1927 | Box 122 \ 1 scan0024 | |
| Letter from Stromberg Motor Devices Ltd. confirming they will send an engineer in 10 to 14 days. | 27th Sep 1927 | Box 122 \ 1 scan0025 | |
| Letter from Stromberg Motor Devices Ltd. regarding carburetter final road adjustments. | 21th Nov 1927 | Box 122 \ 1 scan0026 | |
| Letter from Stromberg Motor Devices Ltd. acknowledging a telegram and arranging for their Mr. Knott to make contact. | 30th Nov 1927 | Box 122 \ 1 scan0027 | |
| Letter to Solex Ltd. arranging a visit to their Paris carburettor laboratory and discussing technical matters. | 29th Sep 1928 | Box 122 \ 1 scan0028 | |
| Letter from Stromberg Motor Devices Ltd. regarding the performance of their carburetor during a record-breaking run. | 4th Jan 1928 | Box 122 \ 1 scan0029 | |
| Letter detailing the performance of a new Stromberg UX-4 carburetter on a Phantom vehicle. | 3rd Dec 1928 | Box 122 \ 1 scan0030 | |
| Report page discussing carburetter performance, features, and specific design elements like the main jet and throat. | 3rd Dec 1928 | Box 122 \ 1 scan0031 | |
| Detailed description of carburettor adjustment mechanisms and their functions. | 3rd Dec 1928 | Box 122 \ 1 scan0032 | |
| Analysis of carburettor functions including starting, breather, idling, and sizing for various engines. | 3rd Dec 1928 | Box 122 \ 1 scan0033 | |
| Technical letter detailing engine displacement figures, carburetter settings, and manifold design. | 3rd Dec 1928 | Box 122 \ 1 scan0034 | |
| Requesting the return of a Zenith triple diffuser carburetter for an experiment on a 20 HP engine. | 2nd Oct 1929 | Box 122 \ 1 scan0035 | |
| Test report on a 'Japan' induction system, comparing a single carburetter with a twin ramming pipe against a twin carburetter setup. | 28th Dec 1929 | Box 122 \ 1 scan0036 | |
| Carburettor experiments comparing single versus twin carburettor systems for improved distribution and acceleration on the Phantom model. | 14th Jan 1929 | Box 122 \ 1 scan0037 | |
| Letter from Stromberg Motor Devices Ltd. regarding carburettor tests, patents, and future requirements. | 14th Jan 1929 | Box 122 \ 1 scan0038 | |
| Letter to Stromberg Motor Devices Ltd. about receiving a carburetter from the U.S.A. for testing. | 15th Jan 1929 | Box 122 \ 1 scan0039 | |
| | | | |
