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
Specification table for S.A.E. Standard balloon tires and rims for commercial vehicles.1st Aug 1929Box 17 \ 7  Scan055
Proposal for 19' well-based rims for the Phantom II, with a request for a sample pair for testing, and including a customer testimonial.1st Jan 1930Box 17 \ 7  Scan056
The effects of carrying two spare wheels on the steering, skidding, and riding comfort of a Phantom II.2nd Jan 1930Box 17 \ 7  Scan057
Assessment of vehicle riding comfort and the effects of carrying spare wheels.10th Jan 1930Box 17 \ 7  Scan058
Car test report concerning steering issues related to the Prince of Wales' car.10th Jan 1930Box 17 \ 7  Scan059
Modifications to the Prince of Wales' car, specifically the placement of spare wheels and its effect on steering.10th Jan 1930Box 17 \ 7  Scan060
Implications of increasing luggage box size and relocating the spare wheel on vehicle handling.13th Jan 1930Box 17 \ 7  Scan061
Expressing concern and withholding a signature on a standardisation form for 20' wheels with 7' tyres.13th Feb 1930Box 17 \ 7  Scan062
Querying the standardisation of 20-inch wheels with 7-inch tyres for the Phantom II model.13th Feb 1930Box 17 \ 7  Scan063
Discontinuing the 6.5 inch section tyre and replacing it with the 7 inch section for 20 inch rims.14th Feb 1930Box 17 \ 7  Scan064
Standardisation of chassis parts for 20 inch wheels with 7 inch tyres.1st Jan 1930Box 17 \ 7  Scan065
Difficulties of balancing wheels with 'Fort' tyres and proposing a solution.25th Mar 1930Box 17 \ 7  Scan066
Wheel arch clearances and modifications to the rear track for the P.2. model.7th Apr 1930Box 17 \ 7  Scan067
Steering complaint from Sir Henry Segrave, detailing issues with wheel balance and pivot lean.11th Apr 1930Box 17 \ 7  Scan068
Wheel balance issues with India Tyres and their detrimental effect on vehicle steering.14th Apr 1930Box 17 \ 7  Scan069
The excessive imbalance found in 'India' brand tyres and tubes taken from Major Segrave's car.23th Apr 1930Box 17 \ 7  Scan070
Recommendations for resolving Phantom II steering complaints regarding wheel balance, tyre pressure and pivot lean.13th May 1930Box 17 \ 7  Scan071
Page detailing adjustments for cross-steering tube toe-in, poundage, and shock absorber loading.13th May 1930Box 17 \ 7  Scan072
Shock absorber oil levels, tyre recommendations, and a test for cross-steering tube load.13th May 1930Box 17 \ 7  Scan073
Blueprint diagram detailing the cross steering tube specifications and adjustments.13th May 1930Box 17 \ 7  Scan074
Excessive front tyre wear on Phantom II cars due to incorrect toe-in, referencing a complaint from Dunlop Rubber Co.27th Jun 1930Box 17 \ 7  Scan075
List of customer cars exhibiting excessive toe-in, detailing vehicle models, tyre specifications, and mileage.22th Jul 1930Box 17 \ 7  Scan076
Wheel modifications to increase track width in response to radiator jellying experiments.22th Jul 1930Box 17 \ 7  Scan077
The production of experimental Phantom II road wheels with increased offset.25th Jul 1930Box 17 \ 7  Scan078
Decision not to standardise moving wheels further out due to the increase in car track width.30th Aug 1930Box 17 \ 7  Scan079
Implications and questioning the value of fitting wider wheels to a car.21th Oct 1930Box 17 \ 7  Scan080
Implications of fitting wider wheels to the Phantom II model.24th Oct 1930Box 17 \ 7  Scan081
Suggestion to reduce the angle of the wheel cone to save paintwork on the spokes from damage.18th Jun 1931Box 17 \ 7  Scan082
Internal memorandum from Sg. to Hs. regarding the question of wheels for America.18th Jun 1931Box 17 \ 7  Scan083
Steering problems caused by attempting to standardise 19-inch wheel rims on Phantom 11 cars for America.20th Jun 1931Box 17 \ 7  Scan084
Arguing against the instruction to seal road wheel hubs on P.2 & 25 HP models.19th Feb 1932Box 17 \ 7  Scan085
Method and purpose of sealing hubs on Phantom II and 25 HP models.23th Feb 1932Box 17 \ 7  Scan086
Standardisation of road wheels with two rows of spokes.9th Jun 1932Box 17 \ 7  Scan087
Standardisation of Chassis Parts form detailing the introduction of a new part to a chassis series.22th Sep 1932Box 17 \ 7  Scan088
Road wheel specifications for the 40/50 HP O.2 series chassis.22th Sep 1932Box 17 \ 7  Scan089
Standardising 19-inch wheels on Phantom II cars and the resulting effects.23th Sep 1932Box 17 \ 7  Scan090
Speedometer revolutions for 19-inch wheels on a Phantom II.24th Sep 1932Box 17 \ 7  Scan091
The use of 19-inch wheels on Phantom II cars and axle ratios for Continental models.27th Sep 1932Box 17 \ 7  Scan092
Standardisation of 19' road wheels with two rows of spokes to lower the chassis.17th Aug 1932Box 17 \ 7  Scan093
Standardisation form for a new chassis part, specifying the first chassis for fitment and associated costs.17th Sep 1932Box 17 \ 7  Scan094
Declining the fitting of air-wheel tyres to chassis due to a lack of experience and potential danger.27th Jul 1934Box 17 \ 7  Scan095
The unsuitability of air wheel tyres for Chassis No.1-WJ, confirming the customer will use standard Balloon tyres instead.6th Aug 1934Box 17 \ 7  Scan096
Efforts to reduce vehicle weight by using lighter materials and creating new standards.29th Oct 1925Box 18 \ 1  Scan001
Modifications to lighten the Phantom engine, with comparisons to the Silver Ghost.1st Dec 1925Box 18 \ 1  Scan002
Modifications to the Lighter Phantom Engine, including increasing the cylinder block height.7th Jun 1926Box 18 \ 1  Scan003
Examination of a new front axle, highlighting design flaws and recommending improvements.10th Jun 1926Box 18 \ 1  Scan004
Weight specification sheet for the EAC-V11 chassis.2nd Feb 1927Box 18 \ 1  Scan005
Specification sheet detailing modifications and weights for engine components like pistons and governors.9th Feb 1927Box 18 \ 1  Scan006
Stating the approximate weight of the S.S. Engine and Gear Box.29th Aug 1928Box 18 \ 1  Scan007
Tests of the 'SS' engine unit's oiling system and its weight compared to the Phantom engine.13th Sep 1928Box 18 \ 1  Scan008
Graph of oil flows versus engine RPM for a Super-Sports engine.10th Sep 1928Box 18 \ 1  Scan009
Blank document page marked with a 'Print Room' stamp.13th Sep 1928Box 18 \ 1  Scan010
Graph of oil pressures versus engine RPM for a Super Sports Engine.10th Sep 1928Box 18 \ 1  Scan011
Received and stamped by the Print Room in Derby.13th Sep 1928Box 18 \ 1  Scan012
Requesting clarification on the weight saved on the gearbox for the 'SS' engine unit.18th Sep 1928Box 18 \ 1  Scan013
Weight breakdown and specifications for the 18-EX chassis.23th Nov 1928Box 18 \ 1  Scan014
The initial road test and general impression of the new 'SS' chassis, comparing it to the Phantom.23th Nov 1928Box 18 \ 1  Scan015
Comparison of chassis weights between the Standard 40/50 'V' Series and the 'SS' Chassis.1st Jan 1929Box 18 \ 1  Scan016
The weight of the 18-EX chassis and the complete car.1st Jan 1929Box 18 \ 1  Scan017
Weight of accessories, tools, and bodies for experimental cars 18-EX and 22-EX.30th Jan 1929Box 18 \ 1  Scan018
Request for front axle, rear axle, and chassis weights for the 'SS' ('J2' Series) for springing purposes.9th Apr 1929Box 18 \ 1  Scan019
Car performance, focusing on weight reduction and comparisons between the 20 HP, Phantom, and Chrysler models.13th Apr 1929Box 18 \ 1  Scan020
Comparative table of car data including capacity, weight, gear ratio, and fuel consumption for various models.15th Apr 1929Box 18 \ 1  Scan021
Required weights with some other additions, in reply to a previous communication.15th Apr 1929Box 18 \ 1  Scan022
List of weights in pounds for S.S. chassis components.16th Apr 1929Box 18 \ 1  Scan023
Request for chassis and unsprung weight information to estimate road spring poundages.16th Apr 1929Box 18 \ 1  Scan024
Chassis weight of a 19-EX model with and without Lucas P.100 headlamps.23th Apr 1929Box 18 \ 1  Scan025
Listing springs successfully fitted to experimental cars with their corresponding weights.1st Jun 1929Box 18 \ 1  Scan026
Summary of dynamometer performance, weight distribution, and consumption data for S.S. and Phantom models.9th Jul 1929Box 18 \ 1  Scan027
Placement of spare wheels at the rear of a car for H.R.H. The Prince of Wales and its impact on vehicle dynamics.26th Nov 1929Box 18 \ 1  Scan028
Table of chassis weights for the Phantom II and 20/25 models.26th Nov 1929Box 18 \ 1  Scan029
Table detailing weight over front and rear axles, shock damper loadings, and total car weight for specific vehicle references.28th Nov 1929Box 18 \ 1  Scan030
Disadvantages of carrying two spare wheels at the rear of cars, particularly concerning increased length and parking issues.28th Nov 1929Box 18 \ 1  Scan031
Placement of spare wheels on the Phantom II and its impact on vehicle handling and ride quality.3rd Dec 1929Box 18 \ 1  Scan032
Tests concerning the effects of carrying two spare wheels on the Phantom II's steering, skidding, and riding comfort.2nd Jan 1930Box 18 \ 1  Scan033
Summary of the effects of carrying two spare wheels on riding comfort and appearance.10th Jan 1930Box 18 \ 1  Scan034
Car test report, the Prince of Wales' car, and related steering issues.10th Jan 1930Box 18 \ 1  Scan035
Modifications to the Prince of Wales' car, concerning the addition of two rear wheels and the impact on steering.10th Jan 1930Box 18 \ 1  Scan036
Proposal to increase luggage box size by moving the spare wheel and the resulting effects on weight distribution and steering.13th Jan 1930Box 18 \ 1  Scan037
Comparing the unsprung weight and handling characteristics of the PI and PII rear axles.3rd Jun 1930Box 18 \ 1  Scan038
Error in wheel and tyre weight figures and the intention to reduce road spring weight.4th Jun 1930Box 18 \ 1  Scan039
Calculation of the unsprung weight for a Phantom II rear axle.4th Jun 1930Box 18 \ 1  Scan040
Weight specification for an E.A.C. SS Engine & Gearbox unit.3rd Sep 1930Box 18 \ 1  Scan041
Urgent request for the separated weights of a chassis and a Park Ward Limousine body, with handwritten calculations.3rd Sep 1930Box 18 \ 1  Scan042
Weight specifications for a 25-EX L.H. Phantom II Park Ward enclosed limousine body.11th Sep 1930Box 18 \ 1  Scan043
Unexpectedly heavy weight of the body on the 26-EX Continental Saloon.17th Oct 1930Box 18 \ 1  Scan044
Internal request for spring poundages and body weights for a Phantom II, 25-EX, with handwritten figures provided.17th Nov 1930Box 18 \ 1  Scan045
Body weight and spring loads for a Phantom II, chassis 25-EX.18th Nov 1930Box 18 \ 1  Scan046
Car weight discrepancies, attributing them to accessories and defending the company's approach to customer-specified bodies.2nd Feb 1931Box 18 \ 1  Scan047
Discrepancies in the weight of various car bodies and accessories.1st Feb 1931Box 18 \ 1  Scan048
The weight and size of 6-seater full-size Pullman limousine bodies.6th Feb 1931Box 18 \ 1  Scan049
Reliability of car weight data, the impact of coachbuilder fittings, and a call for more accurate weighing of experimental cars.17th Feb 1931Box 18 \ 1  Scan050
Barker's accessories, their quality, and a request to collect weight data for various cars.2nd Mar 1931Box 18 \ 1  Scan051
Confidential memo discussing car body weights, exceeding limits, and coachwork inspection.2nd Mar 1931Box 18 \ 1  Scan052
Specification sheet detailing chassis, body, and total weights for various car models.25th Mar 1931Box 18 \ 1  Scan053
Front and rear chassis weights for the L.H. Phantom II and 20/25-HP models.25th Mar 1931Box 18 \ 1  Scan054
Weight increase of the 40/50 chassis due to production modifications.12th Jan 1933Box 18 \ 1  Scan055
Table comparing the weight of parts between N.2 and O series productions, showing the total chassis weight increase.12th Jan 1933Box 18 \ 1  Scan056
Weight of the 40/50 chassis and accounting for weight differences between models.13th Jan 1933Box 18 \ 1  Scan057
Steady weight increase of the 40/50 HP chassis across various series.18th Jan 1933Box 18 \ 1  Scan058


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