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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Report C from a conference detailing proposed alterations for American Rolls-Royce cars regarding steering and suspension.2nd Dec 1919Box 43 \ 2  Scan003
Proposed alterations for American cars, covering luggage carriers, body mounting, and rear spring shackles.2nd Dec 1919Box 43 \ 2  Scan004
Chassis lubrication, battery placement, American market modifications, and starter/pump options.2nd Dec 1919Box 43 \ 2  Scan005
List of parts sent from the United States, detailing the experimental work required for each.30th Jan 1920Box 43 \ 2  Scan006
Bump rig tests of split rear springs fitted with extra clips, detailing the results and various leaf breakage times.12th Apr 1920Box 43 \ 2  Scan007
The unreliability of present rear springs compared to pre-War models, recommending a return to the old type.12th Apr 1920Box 43 \ 2  Scan008
Issues with rear spring plate breakages and the decision to revert to a pre-war design.13th Apr 1920Box 43 \ 2  Scan009
Rear springs, confirming a cable has been sent to America as requested.21th Apr 1920Box 43 \ 2  Scan010
Cable sent to Springfield with instructions to halt production of rear springs.21th Apr 1920Box 43 \ 2  Scan011
Export of parts to America for the American-built chassis and a discussion about road springs.18th May 1920Box 43 \ 2  Scan012
Continued memorandum discussing a proposal to supply information and obtain a settlement.8th Jan 1920Box 43 \ 2  Scan013
Recommendation to use pre-war rear springs for American chassis due to reliability and reduced squeaking.30th Jul 1920Box 43 \ 2  Scan014
Ordering road springs for Rolls-Royce of America, Inc. and potential delays due to supplier holidays and pattern changes.1st Aug 1920Box 43 \ 2  Scan015
Cable detailing a complaint about 'American springing' and a recommendation on suspension setup.8th Oct 1920Box 43 \ 2  Scan016
Cover note for a cablegram received from Rolls-Royce of America Inc. and copies of other related cablegrams.5th Nov 1920Box 43 \ 2  Scan017
Copy of a decoded cablegram from the Springfield, America office regarding production parts.5th Nov 1920Box 43 \ 2  Scan018
Copy of a cablegram to Springfield regarding a shipment of goods.3rd Nov 1920Box 43 \ 2  Scan019
Clarifying a mutilated telegram regarding the supply of springs for the American market.29th Oct 1920Box 43 \ 2  Scan020
Copy of a cablegram to Claude Johnson in New York regarding shock dampers, springs, and an experimental car.18th Oct 1920Box 43 \ 2  Scan021
Fitting of thin leaf springs and a friction device to the steering pivots on all American cars.9th Nov 1920Box 43 \ 2  Scan022
Points for attention regarding post-war American cars, specifically rear springs, front steering pivots, and ignition.11th Nov 1920Box 43 \ 2  Scan023
Technical memorandum discussing spring shackle clearance and the use of sheet nickel silver for radiators.11th Nov 1920Box 43 \ 2  Scan024
The fitting of thin leaf springs and a friction device to the steering pivots on all American cars.17th Nov 1920Box 43 \ 2  Scan025
Strength of springs fitted to cars for the American market and the decision not to claim costs for changes.17th Nov 1920Box 43 \ 2  Scan026
Outlining recommendations for replacing thick leaf rear springs with thin leaf springs on cars for the American market.17th Nov 1920Box 43 \ 2  Scan027
From CJ to EP asking for remarks on a proposal about 'Springs for America' following a telephone message from Mr. Royce.12th Nov 1920Box 43 \ 2  Scan028
Telephone message about the decision to use thin leaf springs for American cars and the cost of rectifying a previous error.12th Nov 1920Box 43 \ 2  Scan029
Instructions for fitting thin leaf springs to American cars.25th Nov 1920Box 43 \ 2  Scan030
Cablegram from Springfield, USA to London, UK with a coded message and its handwritten decoded translation about car parts.2nd Apr 1921Box 43 \ 2  Scan031
The testing of two different 13-leaf bumper chassis springs.21th Jul 1921Box 43 \ 2  Scan032
Comparing the durability of American-manufactured front springs against standard Woodhead springs via bump testing.10th Aug 1921Box 43 \ 2  Scan033
Laboratory analysis comparing the chemical composition and grain structure of an American spring and a Woodhead's spring.11th Aug 1921Box 43 \ 2  Scan034
Failure of American-made springs due to faulty heat-treatment.2nd Sep 1921Box 43 \ 2  Scan035
The inspection process for heat-treating and testing springs.2nd Sep 1921Box 43 \ 2  Scan036
Material selection for Goshawk 11 frames.12th Oct 1921Box 43 \ 2  Scan037
Laboratory analysis of 'Very good American Spring No. 2'.7th Sep 1921Box 43 \ 2  Scan038
On the superior test results of front springs supplied from the U.S.A compared to Woodhead Springs.20th Sep 1921Box 43 \ 2  Scan039
Laboratory analysis of the chemical composition and hardness of an American spring.7th Sep 1921Box 43 \ 2  Scan040
Inter-office correspondence discussing spring breakages and weight distribution, comparing American and English cars.10th Jun 1922Box 43 \ 2  Scan041
Front and rear spring clearances, bumping issues, and the effects of spring lubrication.10th Jun 1922Box 43 \ 2  Scan042
Technical discussion on rear spring lubrication, bouncing frequency, and design comparison between pre-war and post-war models.10th Jun 1922Box 43 \ 2  Scan043
Spring specifications and performance characteristics for various vehicle body types.10th Jun 1922Box 43 \ 2  Scan044
Breakdown of vehicle weight distribution between the front and rear wheels for springing calculations.10th Jun 1922Box 43 \ 2  Scan045
Cover note for an attached report concerning a Rear Spring Roller received from Springfield.10th Aug 1923Box 43 \ 2  Scan046
Letter regarding a report on an hourglass-shaped rear spring roller to prevent noise, noting an omitted sketch is now attached.28th Jul 1923Box 43 \ 2  Scan047
Design proposal for an 'Hour Glass' type of rear spring roller.27th Jul 1927Box 43 \ 2  Scan048
Request to compare sample 40/50 HP front and rear axle springs from Springfield with current supplies from Messrs. Woodhead.10th Aug 1923Box 43 \ 2  Scan049
Letter received from Springfield concerning shackles.20th Aug 1923Box 43 \ 2  Scan050
Letter addressing complaints of wear and rattle in shackle pins and proposing an alternative design.8th Aug 1923Box 43 \ 2  Scan051
Page 2 of a memo proposing a modified device scheme to Mr. Royce for increased convenience and decreased service cost.10th Aug 1910Box 43 \ 2  Scan052
Design drawings and suggestions for adjustable shackles.10th Aug 1910Box 43 \ 2  Scan053
Cover note for an inspection report on sample axle springs from Springfield.14th Dec 1923Box 43 \ 2  Scan054
Test report comparing two U.S.A. springs against drawing specifications.20th Aug 1923Box 43 \ 2  Scan055
Case 187 containing various spring insulators and bearing plates for Rolls-Royce of America Inc.22th Aug 1924Box 43 \ 2  Scan056
The distribution of chassis and body weights between the front and rear wheels.28th Jun 1925Box 43 \ 2  Scan057
Table detailing the distribution of chassis and body weights for various car models.26th Jun 1925Box 43 \ 2  Scan058
Table of riding complaints and their probable causes related to front and rear suspension.8th Feb 1926Box 43 \ 2  Scan059
Analysis and comparison of American car springs with English springs.13th Jul 1925Box 43 \ 2  Scan060
Comparison of a front spring fitted to a Springfield chassis with a Woodhead spring.21th Jul 1925Box 43 \ 2  Scan061
Specification and comparison sheet for the front springs of American Chassis S-107-MK.17th Jul 1920Box 43 \ 2  Scan062
Blank document page with a red 'Print Room' stamp from Derby.20th Jul 1925Box 43 \ 2  Scan063
Query seeking further details on the manufacturing differences between American and Woodhead springs, particularly regarding plate accuracy and heat treatment.24th Jul 1925Box 43 \ 2  Scan064
Requesting a reply to an attached document concerning Road Spring Bumping Tests.19th Sep 1925Box 43 \ 2  Scan065
Letter requesting information on road spring bumping tests and specifications for spring steel.8th Sep 1925Box 43 \ 2  Scan066
Poor quality of front springs on the Phantom and 20 HP models and suggesting further investigation.23th Sep 1925Box 43 \ 2  Scan067
Revised road spring schedule and weight calculations for various car models.28th Oct 1925Box 43 \ 2  Scan068
Table of frame clearance measurements for various car models with and without passengers.20th Oct 1925Box 43 \ 2  Scan069
Blueprint for a front shock absorber spring.28th Aug 1925Box 43 \ 2  Scan070
Cover note attaching a copy of a letter from Mr. Fuller for information.11th Nov 1925Box 43 \ 2  Scan071
Letter from the American branch to the UK branch regarding the in-house manufacturing of road springs.30th Oct 1925Box 43 \ 2  Scan072
From Mr. Nadin to Mr. Beaver regarding the proposal to manufacture front springs in-house.28th Oct 1925Box 43 \ 2  Scan073
Difficulties in sourcing high-quality springs from various suppliers, leading to the decision to manufacture them in-house.28th Oct 1925Box 43 \ 2  Scan074
The manufacturing process for vehicle springs.28th Oct 1925Box 43 \ 2  Scan075
Manufacturing process and equipment for vehicle springs.28th Oct 1925Box 43 \ 2  Scan076
List of machines and costs required for producing springs.28th Oct 1925Box 43 \ 2  Scan077
Results of riding tests, focusing on seat cushion damping and comfort.14th Dec 1925Box 43 \ 2  Scan078
Ride quality experiments comparing balloon and cord tires, and discussing the psychology of riding comfort.14th Dec 1925Box 43 \ 2  Scan079
Improvements to vehicle ride comfort through adjustments to suspension, coachwork, and tires.14th Dec 1925Box 43 \ 2  Scan080
Typed page discussing a working line and a limit that has been reached.14th Dec 1925Box 43 \ 2  Scan081
Graph plotting the results of riding tests with Mack engineers, comparing different vehicle cushion and damping setups on a varied course.14th Dec 1925Box 43 \ 2  Scan082
Graph of riding test results at various speeds on concrete, comparing different vehicle cushion and floor setups.22th Sep 1923Box 43 \ 2  Scan083
Letter discussing vehicle riding qualities and the desire for more flexible front springs, with comparisons to competitor vehicles.18th Dec 1925Box 43 \ 2  Scan084
Study on spring suspension frequency related to deflection and passenger comfort.18th Dec 1925Box 43 \ 2  Scan085
Comparison of spring weights and specifications for different sedan models.18th Dec 1925Box 43 \ 2  Scan086
Procedures followed to improve the riding on model 12-MC.18th Dec 1925Box 43 \ 2  Scan087
Test report on front spring deflection, ratings, and ride quality modifications.18th Dec 1925Box 43 \ 2  Scan088
The results of tests on a 1150 lb. spring with different axle clips.18th Dec 1925Box 43 \ 2  Scan089
Technical note on spring lubrication and the effect of brakes on road clearance.18th Dec 1925Box 43 \ 2  Scan090
Letter from Maurice Olley to E.W. Hives discussing a Norton accelerometer record of riding on a rough road.8th Feb 1926Box 43 \ 2  Scan091
Personal letter discussing tests and feedback on the riding quality of the Phantom model.8th Feb 1926Box 43 \ 2  Scan092
Phantom ride quality issues, comparing English and American road conditions and discussing spring modifications.8th Feb 1926Box 43 \ 2  Scan093
Acceleration testing machines and various types of shock absorbers.8th Feb 1926Box 43 \ 2  Scan094
Car springing, weight distribution, and comparing specifications between Springfield and Derby plants.8th Feb 1926Box 43 \ 2  Scan095
Detailed analysis of vehicle weight distribution, including front, passenger, and coachwork weights for various car models.8th Feb 1926Box 43 \ 2  Scan096
Letter discussing coachwork weight allowance and an attached diagnosis table for springing complaints.8th Feb 1926Box 43 \ 2  Scan097
Personal letter from Maurice Olley to E. W. Hives regarding front spring design and its effect on ride and steering.10th Feb 1928Box 43 \ 2  Scan098
Drawing of a front spring bush.28th Jan 1926Box 43 \ 2  Scan099
American report on vehicle springing, focusing on axle weight distribution and axle-pad design.1st Mar 1926Box 43 \ 2  Scan100
Letter discussing methods for measuring vehicle ride quality and its importance for sales.10th Mar 1926Box 43 \ 2  Scan101
Vehicle suspension, ride quality, testing instruments, and the impact of balloon tires.10th Mar 1926Box 43 \ 2  Scan102


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