| Description | Date | Identifier | |
| Blueprint updates for the Phantom II Semi-Expanding Carburetter, detailing replacement part numbers for the float assembly. | 16th Apr 1932 | Box 13 \ 3 03-page416 | |
| Proposal for the control of an expanding carburetter, suggesting specific settings for normal running, warming up, and starting. | 22th Apr 1932 | Box 13 \ 3 03-page417 | |
| Blueprint for a steering wheel-mounted mixture control for a semi-expanding carburettor PII. | 21th Apr 1932 | Box 13 \ 3 03-page418 | |
| The initial chassis tests of a new semi-expanding carburettor, detailing performance, modifications, and starting issues. | 25th Apr 1932 | Box 13 \ 3 03-page419 | |
| Carburetter performance, detailing issues with slow running, mixture control, noise, and fuel build-up. | 25th Apr 1932 | Box 13 \ 3 03-page420 | |
| Calculations and design considerations for carburettor air silencers on the Phantom II. | 2nd May 1932 | Box 13 \ 3 03-page421 | |
| Power output curves for the Phantom II with various carburettors and silencer losses. | 12th May 1932 | Box 13 \ 3 03-page422 | |
| Graph comparing power output with a 5.25 compression ratio under four different carburettor and intake setups. | 23th May 1932 | Box 13 \ 3 03-page423 | |
| Parts to be incorporated into two semi-expanding carburetters. | 23th May 1932 | Box 13 \ 3 03-page424 | |
| Scheme to overcome air lock trouble in the Semi-Expanding Carburetter Ph.II. | 9th Jun 1932 | Box 13 \ 3 03-page425 | |
| Design and production of a resonance silencer and semi-expanding carburetter. | 10th Jun 1932 | Box 13 \ 3 03-page426 | |
| Resonance air silencer tests for carburettor roar on a Phantom II semi-expanding carburettor. | 15th Jun 1932 | Box 13 \ 3 03-page427 | |
| Performance of a new semi-expanding carburettor compared to previous models. | 1st Jun 1932 | Box 13 \ 3 03-page428 | |
| Patent infringement and royalty payments for the expanding carburetter. | 18th Jun 1932 | Box 13 \ 3 03-page429 | |
| Test report on the Phantom II semi-expanding carburetter, detailing weaknesses and potential improvements. | 20th Jun 1932 | Box 13 \ 3 03-page430 | |
| Carburetter starting and slow running issues, including proposed solutions. | 20th Jun 1932 | Box 13 \ 3 03-page431 | |
| Test results and specifications for carburettor acceleration and metering. | 20th Jun 1932 | Box 13 \ 3 03-page432 | |
| Carburetter adjustments, focusing on quick thread adjustment, suction piston performance, and float material. | 20th Jun 1932 | Box 13 \ 3 03-page433 | |
| Cross-section drawings comparing a modified carburetor component with a later version. | 20th Jun 1932 | Box 13 \ 3 03-page434 | |
| Blueprint for a modification to a slow running body for an expanding carburettor. | 20th Jun 1932 | Box 13 \ 3 03-page435 | |
| Acceleration and expanding carburettor tests at Brooklands. | 13th Jul 1932 | Box 13 \ 4 04-page001 | |
| Performance testing data from Brooklands, including lap times, speeds, and acceleration with different tyre configurations. | 13th Jul 1932 | Box 13 \ 4 04-page002 | |
| Performance and acceleration test results at Brooklands using a standard carburettor. | 14th Jul 1932 | Box 13 \ 4 04-page003 | |
| Valve timing, tappet clearance, valve lift, and tyre specifications for the 22-EX model. | 14th Jul 1932 | Box 13 \ 4 04-page004 | |
| Development of a Phase II semi-expanding carburetter and an accompanying blueprint. | 14th Jul 1932 | Box 13 \ 4 04-page005 | |
| Mixture control of a semi-automatic carburetter. | 18th Jul 1932 | Box 13 \ 4 04-page006 | |
| Necessary modification to the jet feed of a Phantom II Semi-Expanding Carburetter. | 19th Jul 1932 | Box 13 \ 4 04-page007 | |
| Requesting an update on when new type carburetters for a Phantom II car will be ready for fitting. | 20th Jul 1932 | Box 13 \ 4 04-page008 | |
| New larger carburettors for the Phantom II model following tests at Brooklands. | 22th Jul 1932 | Box 13 \ 4 04-page009 | |
| Car performance test results comparing a semi-expanding carburetter against standard and S.U. models at Brooklands. | 23th Jul 1932 | Box 13 \ 4 04-page010 | |
| Brooklands tests comparing different induction systems, including open exhaust, cut-out, and a long-type silencer. | 23th Jul 1932 | Box 13 \ 4 04-page011 | |
| Engine performance test results, including speeds achieved with different exhaust and silencer configurations. | 23th Jul 1932 | Box 13 \ 4 04-page012 | |
| Comparison of large 6-cylinder engine performance against proposed 12 and 18-cylinder units following a visit to the U.S.A. | 23th Jul 1932 | Box 13 \ 4 04-page013 | |
| Taxation difficulties and market justification for a 12-cylinder power unit for the Phantom II model. | 23th Jul 1932 | Box 13 \ 4 04-page014 | |
| Data sheet detailing mean lap speeds achieved with various carburetor and silencer configurations. | 23th Jul 1932 | Box 13 \ 4 04-page015 | |
| Performance data sheet comparing mean lap speeds with different carburettor configurations. | 19th Jul 1932 | Box 13 \ 4 04-page016 | |
| Graph comparing the acceleration of the 22 EX and 25 EX models with different engine configurations. | 19th Jul 1932 | Box 13 \ 4 04-page017 | |
| Graph showing the effect of different carburettor needles on acceleration. | 7th Jul 1928 | Box 13 \ 4 04-page018 | |
| Graph comparing power output with a 5.25 compression ratio using various carburettor and component configurations. | 7th Jul 1928 | Box 13 \ 4 04-page019 | |
| Graph comparing power output against RPM for four different carburettor and intake configurations with a 5.25 compression ratio. | 3rd May 1932 | Box 13 \ 4 04-page020 | |
| Graph comparing power output (B.HP vs R.P.M.) for various carburetor, exhaust, and silencer configurations. | 16th Aug 1932 | Box 13 \ 4 04-page021 | |
| The Phantom II (19-EX) car's semi-expanding carburetter following a 10,000-mile test in France. | 16th Aug 1932 | Box 13 \ 4 04-page022 | |
| Petrol pump failures and governor performance on a 19-EX car. | 16th Mar 1932 | Box 13 \ 4 04-page023 | |
| Comparative fuel consumption tests between car models 19-EX and 25-EX. | 16th Aug 1932 | Box 13 \ 4 04-page024 | |
| Development stages and specification for the semi-expanding carburetter. | 25th Aug 1932 | Box 13 \ 4 04-page025 | |
| Specification sheet for an expanding carburetter (P.II). | 24th Aug 1932 | Box 13 \ 4 04-page026 | |
| Blueprint for an Actuating-Rod (Main Jet). | 24th Aug 1932 | Box 13 \ 4 04-page027 | |
| Technical drawing of an actuating rod nut. | 24th Aug 1937 | Box 13 \ 4 04-page028 | |
| Experimental drawing of a Needle Valve (A1) showing taper dimensions. | 24th Aug 1977 | Box 13 \ 4 04-page029 | |
| Blueprint detailing modifications to a diffuser for an experimental carburettor. | 24th Aug 1932 | Box 13 \ 4 04-page030 | |
| Blueprint of a modification to a carburettor diffuser body assembly. | 23th Aug 1932 | Box 13 \ 4 04-page031 | |
| The design of a separate starting carburetter for the Phantom II model. | 6th Sep 1932 | Box 13 \ 4 04-page032 | |
| Standardisation sheet and introduction of a new semi-expanding carburettor for the Continental type chassis. | 7th Sep 1932 | Box 13 \ 4 04-page033 | |
| Instructions for the adjustment of the Phantom II semi-expanding carburetter. | 21th Sep 1932 | Box 13 \ 4 04-page034 | |
| Instructions for mixture control, low speed jet setting, and slow running unit assembly. | 21th Sep 1932 | Box 13 \ 4 04-page035 | |
| Instructions for carburettor mixture control, starting procedures, and high-speed jet settings. | 21th Sep 1932 | Box 13 \ 4 04-page036 | |
| Specifications for carburetor components including the suction piston, taper needle valve, and diffuser. | 21th Sep 1932 | Box 13 \ 4 04-page037 | |
| Description of the general construction and petrol flow within the carburetter. | 21th Sep 1932 | Box 13 \ 4 04-page038 | |
| Cold starting issues with the R.R. Phantom II Semi Expanding Carburetter, detailing modifications made to improve performance. | 28th Sep 1932 | Box 13 \ 4 04-page039 | |
| Drawing of the Body (Slow Running Jet) for a Semi-Expanding Carburettor. | 28th Sep 1932 | Box 13 \ 4 04-page040 | |
| Confirming parts and modifications for a semi-expanding carburetter. | 30th Sep 1932 | Box 13 \ 4 04-page041 | |
| The need for sketch Hs.719 on production carburetters, pending cold weather for testing. | 3rd Oct 1932 | Box 13 \ 4 04-page042 | |
| Confirming the deletion of the small gauze filter for the low speed jet on the Phantom II Carburetter. | 4th Oct 1932 | Box 13 \ 4 04-page043 | |
| Confirming a new taper needle (V.1438) following road tests for the Phantom II Semi-Expanding carburettor. | 26th Oct 1932 | Box 13 \ 4 04-page044 | |
| Blueprint of a taper needle for a semi-experimental carburettor. | 2nd Nov 1942 | Box 13 \ 4 04-page045 | |
| Weakness and proposed spring-based fix for the Phantom semi-expanding carburetter's acceleration metering. | 17th Oct 1932 | Box 13 \ 4 04-page046 | |
| Consumption and acceleration tests on a semi-expanding carburetter. | 7th Nov 1932 | Box 13 \ 4 04-page047 | |
| Modifications to the air valve, needle, and diffuser to improve fuel mixture and consumption. | 8th Nov 1932 | Box 13 \ 4 04-page048 | |
| The development and starting difficulties of the new R.R. Semi Expanding Carburetter. | 8th Nov 1932 | Box 13 \ 4 04-page049 | |
| Improving carburettor efficiency, control, and starting procedures. | 8th Nov 1932 | Box 13 \ 4 04-page050 | |
| Decision to retain the standard starter carburetter for the Phantom II vehicle following testing. | 10th Nov 1932 | Box 13 \ 4 04-page051 | |
| Starting reliability issues with the semi-expanding carburetter on the Phantom II. | 11th Nov 1932 | Box 13 \ 4 04-page052 | |
| Starting difficulties with the Phantom II semi-expanding carburetter and proposing an experimental modification. | 12th Nov 1932 | Box 13 \ 4 04-page053 | |
| Instruction regarding the semi-expanding carburetter and slow running device for the 40/50 HP O.2 series. | 23th Nov 1932 | Box 13 \ 4 04-page054 | |
| Requesting instructions for tests on a Phantom II carburetter to understand the effects of the low-speed jet on a starting carburettor. | 14th Nov 1932 | Box 13 \ 4 04-page055 | |
| Power loss tests conducted on resonance air silencers for a Phantom II semi-expanding carburettor. | 25th Nov 1932 | Box 13 \ 4 04-page056 | |
| Tests conducted on Phantom II Semi Expanding Carburettor air silencers. | 22th Nov 1932 | Box 13 \ 4 04-page057 | |
| Drawing of a telescopic experimental air silencer. | 22th Nov 1932 | Box 13 \ 4 04-page058 | |
| Report page detailing experiments on an air intake system with a sketch of two tuning chambers. | 22th Nov 1932 | Box 13 \ 4 04-page059 | |
| Hand-drawn diagram illustrating modifications to a pipe, likely an air intake, with specified dimensions and hole patterns. | 22th Nov 1932 | Box 13 \ 4 04-page060 | |
| Testing twin S.U. carburettors and silencers on model 19.G.IV. | 22th Nov 1932 | Box 13 \ 4 04-page061 | |
| Performance graph comparing engine output with and without an AC Air Silencer for a J.3 Head unit. | 3rd Nov 1932 | Box 13 \ 4 04-page062 | |
| Tests conducted on a Phantom II semi-expanding carburetter, focusing on intake silencer design and efficiency. | 3rd Nov 1932 | Box 13 \ 4 04-page063 | |
| Tests to cure air intake roar on a Phantom II using a de-tuner with a semi-expanding carburetter. | 14th Oct 1932 | Box 13 \ 4 04-page064 | |
| Report page detailing tests on plunger position and a sketch of an air silencer and de-tuning chamber. | 14th Oct 1932 | Box 13 \ 4 04-page065 | |
| Road and dynamometer tests of an air silencer on experimental cars (20-EX, 22-EX). | 10th Nov 1932 | Box 13 \ 4 04-page066 | |
| The decision to retain the standard starter carburetter for the Phantom II following tests on a semi-expanding carburetter. | 10th Nov 1932 | Box 13 \ 4 04-page067 | |
| The development and testing of carburetter intake silencers, including comparisons with American designs. | 28th Nov 1932 | Box 13 \ 4 04-page068 | |
| The design and development of an A.C. Silencer for a 5-litre engine. | 28th Nov 1932 | Box 13 \ 4 04-page069 | |
| Test report on alternative designs and fitments for a semi-expanding carburetter air intake silencer. | 28th Nov 1932 | Box 13 \ 4 04-page070 | |
| Intake silencer tests, comparing efficiency, power loss, and weight for various designs. | 28th Nov 1932 | Box 13 \ 4 04-page071 | |
| Recommendation for an intermediate-sized air intake silencer, illustrated with a photograph of it fitted to an engine. | 28th Nov 1932 | Box 13 \ 4 04-page072 | |
| Blueprint detailing designs for resonance silencers for a semi-expanding carburettor. | 28th Nov 1932 | Box 13 \ 4 04-page073 | |
| Blueprint comparing two designs of Phantom II intake resonance silencers for a semi-expanding carburetter. | 28th Nov 1932 | Box 13 \ 4 04-page074 | |
| Blueprint showing two types of American intake silencers for Chrysler and Nash vehicles. | 28th Nov 1932 | Box 13 \ 4 04-page075 | |
| Blueprint showing a typical A.C. silencer for a 5-litre car. | 29th Nov 1932 | Box 13 \ 4 04-page076 | |
| Modifications to be carried out on a Phantom II semi expanding carburetter from car 58-GN. | 29th Nov 1932 | Box 13 \ 4 04-page077 | |
| Modifications to the Phantom II Semi-Expanding Carburetter. | 30th Nov 1932 | Box 13 \ 4 04-page078 | |
| Modifications to the Phantom II Semi-Expanding Carburetter. | 30th Nov 1932 | Box 13 \ 4 04-page079 | |
| Reduction in clearance for the Semi Expanding Carburetter's Air Valve Centre Spindle and bush. | 7th Dec 1932 | Box 13 \ 4 04-page080 | |
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