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
To Mr. Platford detailing a suggestion from Mr. Truffault for an improved spring roller and friction shock absorber.14th Feb 1916Box 19 \ 2  Scan012
Report on an interview with Mr. Truffault, Mr. Royce's opinion on spring rollers, and the acquisition of new shock absorbers.14th Feb 1916Box 19 \ 2  Scan013
Forwarding Blackshaw's report on an interview with Mr. Truffault.22th Feb 1916Box 19 \ 2  Scan014
Departmental memo regarding the delivery of Truffault shock absorbers for experimental purposes.22th Feb 1916Box 19 \ 2  Scan015
Departmental memo regarding the receipt of new experimental Truffault Shock Absorbers and coordinating with Peugeot for an export permit.29th Feb 1916Box 19 \ 2  Scan016
Departmental memo regarding the testing and valuation of Truffault shock absorbers.29th Mar 1916Box 19 \ 2  Scan017
Notes and recommendations from the inventor regarding Truffault Shock Absorbers.29th Mar 1916Box 19 \ 2  Scan018
The trial and fitting of shock absorbers, comparing another manufacturer's methods and suggesting modifications.29th Mar 1916Box 19 \ 2  Scan019
Technical note on the Truffault Shock Absorber, discussing material changes and corrections to design drawings.4th Mar 1916Box 19 \ 2  Scan020
Departmental memo regarding the distribution of blueprints and translated notices for Truffault Shock Absorbers.4th Mar 1916Box 19 \ 2  Scan021
Blueprint detailing the assembly of a Truffault-Peugeot suspension system.16th Feb 1916Box 19 \ 2  Scan022
Project blueprint for a modified rear shock absorber.1st Mar 1916Box 19 \ 2  Scan023
Project for modification of an apparatus for rear mounting.1st Mar 1916Box 19 \ 2  Scan024
Blueprint of a Peugeot Truffault shock absorber with detailed component drawings.1st Mar 1916Box 19 \ 2  Scan025
French language document cover page regarding the construction details of an apparatus.1st Mar 1916Box 19 \ 2  Scan026
Blueprint showing the assembly of a Peugeot-Truffault shock absorber.1st Mar 1916Box 19 \ 2  Scan027
Cover sheet for a document titled 'Ensemble de l'appareil' (Device Assembly), stamped by Peugeot.1st Mar 1916Box 19 \ 2  Scan028
Blueprint for the assembly of the rear Truffault-Peugeot suspensions.16th Feb 1916Box 19 \ 2  Scan029
Project document for a rear mounting or assembly, written in French.1st Mar 1916Box 19 \ 2  Scan030
Blueprint of a Peugeot Truffault shock absorber and its components.1st Mar 1916Box 19 \ 2  Scan031
Folded document cover with handwritten notes and a stamp from Cycles Peugeot.1st Mar 1916Box 19 \ 2  Scan032
The payment and dispatch of a set of Truffault shock absorbers.15th Mar 1916Box 19 \ 2  Scan033
Truffault Shock Absorbers, instructing the Experimental Department to report on the cost.20th Mar 1916Box 19 \ 2  Scan034
Requesting an update on the delivery of Truffault shock absorbers.22th May 1916Box 19 \ 2  Scan035
Chasing the delivery of Truffault shock absorbers from Paris.26th May 1916Box 19 \ 2  Scan036
The delayed arrival of a set of Truffault Shock Absorbers from Paris.26th May 1916Box 19 \ 2  Scan037
Arrival and fitting of Truffault shock absorbers.28th Jul 1916Box 19 \ 2  Scan038
Value of Truffault shock absorbers after examination.28th Jul 1916Box 19 \ 2  Scan039
Memo regarding the dispatch of parts and a query to Mr. Royce.28th Jul 1916Box 19 \ 2  Scan040
Internal order form for shock absorbers and related vehicle components.24th Jul 1916Box 19 \ 2  Scan041
Attaching previous correspondence regarding Truffault Shock Absorbers X.762.8th Aug 1916Box 19 \ 2  Scan042
Payment for and seeking an opinion on Truffault Shock Absorbers.11th Aug 1916Box 19 \ 2  Scan043
Use of Trauffault Shock Absorbers and experiments to improve chassis performance.21th Sep 1916Box 19 \ 2  Scan044
Shipment of a specimen Trauffault Shock Absorber and a complete set.25th Sep 1916Box 19 \ 2  Scan045
Despatch of a Trauffault Shock Absorber to Mr. Royce.25th Sep 1916Box 19 \ 2  Scan046
Requesting the experimental fitting of a set of X.762 Trauffault rear axle shock absorbers to car 7CA.26th Sep 1916Box 19 \ 2  Scan047
The experimental fitting of X.762 shock absorbers to a 7CA vehicle.26th Sep 1916Box 19 \ 2  Scan048
Requesting a report on Truffault Shock Absorbers.28th Sep 1916Box 19 \ 2  Scan049
Spring friction, shock absorbers, and potential suspension improvements for a post-war chassis.1st Oct 1916Box 19 \ 2  Scan050
Following up on an instruction regarding Truffault shock absorbers for experimental chassis 7-CA.7th Oct 1918Box 19 \ 2  Scan051
Forwarding and requested return of a Truffault Shock Absorber.10th Oct 1916Box 19 \ 2  Scan052
Completed experiments on carburettors and shock absorbers handed over for testing.11th Jan 1917Box 19 \ 2  Scan053
Feedback on Truffault shock absorbers on chassis 7- C.A.9th Mar 1917Box 19 \ 2  Scan054
Post-war engine improvements, camshaft experiments, and lending parts for trials in Spain.13th Mar 1917Box 19 \ 2  Scan055
Overhaul and a list of 11 proposed improvements for car RE 7C.19th Apr 1917Box 19 \ 2  Scan056
Continued list of vehicle component specifications and modifications.15th May 1916Box 19 \ 2  Scan057
Proposed modifications to the 7 CA car engine, focusing on pistons, connecting rods, valves, and camshafts.2nd May 1917Box 19 \ 2  Scan058
Improvements to gearbox oil retention, suspension, and the lightening of the back axle.1st Jun 1917Box 19 \ 2  Scan059
Extract detailing the fitting of experimental Truffault shock absorbers to the back of a car.1st Jun 1917Box 19 \ 2  Scan060
Alteration note number 158 for a Truffault shock absorber bracket X.762A, including a dimensioned sketch.9th Jun 1917Box 19 \ 2  Scan061
Experimental parts fitted to chassis 7 C.A.13th Jun 1917Box 19 \ 2  Scan062
Extract detailing parts fitted to car 7 C.A. for Mr. Royce, including springs, shock absorbers, and a speed indicator.15th Jun 1917Box 19 \ 2  Scan063
Road test report on Chassis 7 CA, detailing engine, clutch, and suspension performance.4th Jul 1917Box 19 \ 2  Scan064
Performance and theory of shock dampers with variable damping effects.4th Jul 1917Box 19 \ 2  Scan065
Fitting of experimental pistons with narrow rings to Wing-Commander Briggs' car.4th Jul 1917Box 19 \ 2  Scan066
Proposed post-war camshafts and observations on springing, shock absorbers, and braking on a specific vehicle.4th Jul 1917Box 19 \ 2  Scan067
Potential car alterations for post-war models, focusing on wheel clearance and suspension.10th Jul 1917Box 19 \ 2  Scan068
Petrol consumption of the 7 CA car and production delays for new rocking arms and camshafts.10th Jul 1917Box 19 \ 2  Scan069
Camshaft and shock absorber options for Commander Briggs' car, awaiting a decision from Mr. Royce.19th Sep 1917Box 19 \ 2  Scan070
Revisions to the 'After the War Chassis' for a potential American model, including suggested improvements to valve lift and compression.19th Sep 1917Box 19 \ 2  Scan071
List of technical recommendations and observations on various car components and specific models.1st Sep 1917Box 19 \ 2  Scan072
Construction of a new chassis, mentioning the need for a Self Starter and its suitability for the American market.23th Aug 1940Box 19 \ 2  Scan073
Meeting memo detailing design changes to be incorporated into the post-war car chassis.19th Sep 1917Box 19 \ 2  Scan074
List of engineering specifications and modifications, page 2.24th Feb 1917Box 19 \ 2  Scan075
Inquiring about the progress of experiments on Truffault Shock Absorbers.12th Oct 1917Box 19 \ 2  Scan076
Confirming positive results for Truffault shock absorbers on an experimental chassis and the decision to fit them to the 'After-the-War' chassis.12th Oct 1917Box 19 \ 2  Scan077
Unsatisfactory Zephyr type pistons causing knocks and failures, intended for an after-the-war chassis.22th Oct 1918Box 19 \ 2  Scan078
Fitting Trauffault-style shock absorbers to an after-the-war chassis.26th Apr 1917Box 19 \ 2  Scan079
Specification of alterations for the 40/50 HP chassis (R7/G181218) to be applied to 500 units.8th Jan 1919Box 19 \ 2  Scan080
Alterations and experimental work for the 40/50 HP present type chassis, model X.2565.18th Dec 1918Box 19 \ 2  Scan081
Selection of wheels and the design of shock dampers.18th Dec 1918Box 19 \ 2  Scan082
The specifications for Trufault shock absorbers for the front and back of a car.29th Jan 1919Box 19 \ 2  Scan083
Observations on the bouncing of the rear axle on a 40/50 chassis car at different speeds and with varied passenger loads.29th May 1919Box 19 \ 2  Scan084
Road tests comparing car performance with and without Truffault Shock Absorbers.29th May 1919Box 19 \ 2  Scan085
Instructions regarding Truffault shock absorbers on chassis 7CA, detailing required weights for movement.20th Aug 1911Box 19 \ 2  Scan086
Comparing bronze plates against steel and fibre plates for use in rear shock absorbers.13th Nov 1920Box 19 \ 2  Scan087
The increased friction measurement of Ferodo Discs in a shock absorber on the 6.EX car.13th Nov 1920Box 19 \ 2  Scan088
And comparing different shock damper patterns such as scissors, Hartford, and Truffault.29th Dec 1921Box 19 \ 2  Scan089
Letter from Rolls-Royce America regarding the use of Truffault shock absorbers on sports cars to address front-wheel wobble and for high-speed use.12th Apr 1928Box 19 \ 2  Scan090
Reference note for previous correspondence concerning 40/50 & Phantom models in the U.S.A.21th Sep 1931Box 19 \ 3  Scan001
Visit by Mr. Hardy to Derby for work on the L.H. SS. gearbox.18th Dec 1928Box 19 \ 3  Scan002
Handover of design for the L.H. 'SS' gearbox and a period of secrecy.27th Dec 1928Box 19 \ 3  Scan003
Instructing departments to order parts for three complete Left Hand 'SS' Chassis cars.11th Jan 1929Box 19 \ 3  Scan004
Secret letter from Rolls-Royce of America to the Derby works inquiring about the progress of a new car program and chassis development.11th Jan 1929Box 19 \ 3  Scan005
Letter discussing experimental cars, production schedules, and direct communication channels with the Derby Works.21th Jan 1929Box 19 \ 3  Scan006
Recommendation to send an experimental 'SS' car to the USA for testing under American conditions.21th Jan 1929Box 19 \ 3  Scan007
Cover note from Hs. to Sg. regarding a letter from Mr. Beaver and a proposed reply.21th Jan 1929Box 19 \ 3  Scan008
Secret letter from RR America to Derby inquiring about the progress of the new 'SS' chassis development programme and production timeline.11th Jan 1929Box 19 \ 3  Scan009
Letter discussing the feasibility of production and delivery schedules for cars commencing in 1930.21th Jan 1929Box 19 \ 3  Scan010
Letter from the Experimental Department updating Rolls-Royce America on the progress and advantages of the new 'SS' chassis over the Phantom.21th Jan 1929Box 19 \ 3  Scan011
Recommendation to send an experimental car to the U.S.A. for testing.21th Jan 1929Box 19 \ 3  Scan012
Letter to Rolls-Royce America detailing the development and advantages of the new 'SS' chassis over the Phantom.21th Jan 1929Box 19 \ 3  Scan013
Body schemes for the left-hand 'SS' chassis, recommending bodies be made in England for complete cars sent to America.22th Jan 1929Box 19 \ 3  Scan014
The introduction of 'SS' cars and manufacturing plans in America.22th Jan 1929Box 19 \ 3  Scan015
Suggesting amendments to a letter regarding the American Company's decision on 'SS' chassis production.22th Jan 1929Box 19 \ 3  Scan016
Camshaft drive options for the 'SS' left-hand drive chassis intended for the U.S.A.23th Jan 1929Box 19 \ 3  Scan017
Manufacture of experimental left-hand drive 'SG' chassis for the American market and the optimal wheelbase length.24th Jan 1929Box 19 \ 3  Scan018
Wheelbase options and seeking input before consulting the American Company.24th Jan 1929Box 19 \ 3  Scan019
Design considerations for a shorter, left-hand drive American chassis.26th Jan 1929Box 19 \ 3  Scan020
Spare wheel placement and the importance of wheelbase length for sales.31th Jan 1929Box 19 \ 3  Scan021


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