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
Approving the colour scheme for a Barkerlite Coupe limousine and arranging for the bonnet to be sent for painting.1st Jul 1928Box 102 \ 6  scan0069
Telegram concerning the urgent delivery of a bonnet for a Barkers Coupe Limousine required for cellulosing.24th Jul 1928Box 102 \ 6  scan0070
Confirmation of wire regarding the requirement for Barker's to have a bonnet cellulosed to match fabric.24th Jul 1928Box 102 \ 6  scan0071
Telegram regarding the requirement for a bonnet to be cellulosed to match fabric.24th Jul 1928Box 102 \ 6  scan0072
Coachbuilding error concerning the paint and fabric on a Coupe Limousine's bonnet and scuttle.14th Aug 1928Box 102 \ 6  scan0073
Paint colour error on a Coupe Limousine for Mr. Royce.22th Aug 1928Box 102 \ 6  scan0074
Reasons for monitoring coachbuilders and outlining the division of responsibilities for body construction.24th Sep 1928Box 102 \ 6  scan0075
Design and standardization of bonnets for Phantom and SS models.24th Sep 1928Box 102 \ 6  scan0076
Design criticisms and modifications for bonnets on the India 3 and Twenty models.24th Sep 1928Box 102 \ 6  scan0077
Alteration of a Sedanca scuttle by coachbuilder Hoopers for chassis 14-G-4.27th Sep 1928Box 102 \ 6  scan0078
Halting work on a 20 HP chassis due to a modified bonnet being 4 1/4 inches longer than standard.5th Oct 1928Box 102 \ 6  scan0079
Potential service issue with the 20-HP new type shutter control mechanism.30th Oct 1928Box 102 \ 6  scan0080
Modifications to the 20 HP chassis bonnet and dash, and its impact on material for 'O' Series and an experimental car.5th Nov 1928Box 102 \ 6  scan0081
Minor modification to the 20 HP car's bonnet and dash, suggesting a decision be made from drawings.11th Nov 1928Box 102 \ 6  scan0082
New design for bonnet fasteners and locks, and its potential use on trials cars.6th Nov 1928Box 102 \ 6  scan0083
Standardisation of chassis parts, specifically a modification to the bonnet lines.6th Nov 1928Box 102 \ 6  scan0084
Form detailing chassis part fitting, testing date, and associated costs.25th May 1929Box 102 \ 6  scan0085
Modified bonnet, radiator, and dash for a 25 HP chassis, referencing a similar design for the Phantom II.4th Nov 1929Box 102 \ 6  scan0086
Secret memorandum discussing design improvements for the dashboard and bonnet of the 20/25 HP chassis.27th Feb 1930Box 102 \ 6  scan0087
Modification of a 20 HP dashboard and radiator due to sales not agreeing with the bonnet curves.27th Feb 1930Box 102 \ 6  scan0088
Request to send a bonnet to the coachbuilders for cellulosing to ensure a correct color match.26th Apr 1930Box 102 \ 6  scan0089
Delay in supplying bonnets for the 20 HP and Phantom II chassis.28th Apr 1930Box 102 \ 6  scan0090
Supply arrangements for bonnet locks on 40/50 HP and 20/25 HP chassis.2nd Jun 1930Box 102 \ 6  scan0091
Scheme for a concealed bonnet side hinge for P.2 and 25 HP models.28th Jun 1930Box 102 \ 6  scan0092
Revisions to the bonnet and dash for the 20/25 HP model, including modifications to the radiator.16th Aug 1930Box 102 \ 6  scan0093
Tests conducted on a Phantom II to determine if a louvered bonnet improves cooling and reduces overheating during hill climbs.8th Oct 1930Box 102 \ 6  scan0094
Modifications required to fit a revised radiator and bonnet due to changes in the scuttle design on a Phantom II.10th Oct 1930Box 102 \ 6  scan0095
Requesting a progress update on experiments for adjustable pedal stems, concealed bonnet hinges, and bonnet modifications.11th Oct 1930Box 102 \ 6  scan0096
Arrangement of the bonnet over the dashboard for the Phantom II N.2 Series.13th Oct 1930Box 102 \ 6  scan0097
The status of experiments on adjustable pedal stems, concealed bonnet hinges, and a bonnet modification.13th Oct 1930Box 102 \ 6  scan0098
Improvements for radiators and bonnets, specifically regarding square tubes, overflow valves, and bonnet vents.14th Oct 1930Box 102 \ 6  scan0099
Criticisms and potential design improvements for car bonnets and radiators.25th Oct 1930Box 102 \ 6  scan0100
Design suggestions for a detachable filler cap, horizontal louvres, and bonnet sides.25th Oct 1930Box 102 \ 6  scan0101
And seeking clarification on design choices for radiators, tubes, and bonnet vents.27th Oct 1930Box 102 \ 6  scan0102
Performance and cost of square vs round radiator tubes and bonnet ventilation design.30th Oct 1930Box 102 \ 6  scan0103
Proposed proportions for the bonnet, radiator, and dashboard for the 'Japan 3' model based on previous criticisms.31th Jan 1931Box 102 \ 6  scan0104
Design and manufacturing changes for car bonnets, including materials, fittings, and construction methods.19th Feb 1931Box 102 \ 6  scan0105
Design and mock-up of a new bonnet, radiator, and dashboard for the 'Japan 3' project.19th Feb 1931Box 102 \ 6  scan0106
Dimensional errors found on the mock-up of the Japan II bonnet, radiator, and dash for a 20/25 HP chassis.19th Mar 1931Box 102 \ 6  scan0107
Incorrect bonnet for the Japan III project, requesting information on the error.20th Mar 1931Box 102 \ 6  scan0108
Secret memo regarding the verified dimensions of a mock-up bonnet and radiator for the Japan III project.24th Mar 1931Box 102 \ 6  scan0109
Secret memo regarding the appearance of a mock-up for the Bonnet, Radiator and Dash of the Japan III project.3rd Mar 1931Box 102 \ 6  scan0110
Revised bonnet overhanging the dash with concealed bonnet hinges.15th Jan 1931Box 102 \ 6  scan0111
Notification that a change was not sent for tooling due to a probable modification.27th Apr 1931Box 102 \ 6  scan0112
Bonnet and side wheel carrier modifications for the 20/25 'T' series and their impact on coachwork.6th May 1931Box 102 \ 6  scan0113
Proposed lengthening of the bonnet for the second half 'T' series 20/25 model and a discussion on bonnet clip options.8th May 1931Box 102 \ 6  scan0114
The design of a universal dashboard for the second half of the 'T' series 20/25.16th May 1931Box 102 \ 6  scan0115
Increasing bonnet side panel clearance on 40/50 & 25 HP models to prevent knocking.11th Jun 1931Box 102 \ 6  scan0116
Manufacture of rivetless bonnets and the issues with using steel.18th Jun 1931Box 102 \ 6  scan0117
Material choices and designs for aluminium car bonnets, including hinges, rivets, and stiffeners.18th Jun 1931Box 102 \ 6  scan0118
New rivetless aluminium bonnet design for the 20/25 model.23th Jun 1931Box 102 \ 6  scan0119
Design considerations for rivetless aluminium and steel bonnets, weighing cost, weight, and manufacturing challenges.8th Jul 1931Box 102 \ 6  scan0120
Design proposal for a rivetless steel bonnet, showing sections of the top and side hinges.15th Aug 1931Box 102 \ 6  scan0121
Feedback on a new front engine and radiator support design for a 25 HP model, changed due to a deeper radiator.15th Aug 1931Box 102 \ 6  scan0122
Design and production of rivet-less aluminium bonnets.20th Aug 1931Box 102 \ 6  scan0123
Requesting instructions to fit a 25 HP rivetless bonnet to vehicle 18-G4.3rd Sep 1931Box 102 \ 6  scan0124
Proposals for longer and rivetless bonnets for the 25 HP model.28th Nov 1931Box 102 \ 6  scan0125
Design of longer bonnets for the 25 HP chassis.30th Nov 1931Box 102 \ 6  scan0126
Technical memo discussing the lengthening of bonnets for the 25 HP model.12th Mar 1931Box 102 \ 6  scan0127
The design and introduction of longer bonnets for the 25 HP series cars.3rd Dec 1931Box 102 \ 6  scan0128
Standardisation of flip flap type bonnet ventilators similar to Phantom to overcome overheating.5th Oct 1931Box 102 \ 6  scan0129
Standardisation document detailing the fitting of a new part to chassis 101 in 'T'.4th Dec 1931Box 102 \ 6  scan0130
The design and production of longer bonnets for the 25 HP chassis.4th Dec 1931Box 102 \ 6  scan0131
Proposed modifications to the 25HP car bonnet, including lengthening and using different hinges and fasteners.5th Dec 1931Box 102 \ 6  scan0132
Design requirements for longer bonnets on the 25 HP model.8th Dec 1931Box 102 \ 6  scan0133
Requesting a report on schemes tested for steadying the side wheel carrier on P.2 and 25HP models.10th Dec 1931Box 102 \ 6  scan0134
Design and specifications for the radiator, bonnet, and dash for project J.3.17th Dec 1931Box 102 \ 6  scan0135
Request for information on shutter section design and the desirability of a loose shell design using stainless steel.17th Dec 1931Box 102 \ 6  scan0136
Radiator, bonnet, and dash design proposals for the J.3 Chassis.19th Dec 1931Box 102 \ 6  scan0137
Standardisation of longer bonnets and revised side wheel carrier stays for the P.2 and 25 HP models.21th Dec 1931Box 102 \ 6  scan0138
Standardisation of longer car bonnets.21th Dec 1931Box 102 \ 6  scan0139
The fit and stress issues of the overhanging bonnet on the 20/25 HP and Phantom II models.18th Mar 1932Box 102 \ 6  scan0140
Urgent request for instructions on fitting bonnet locks to J.3.3rd Sep 1932Box 102 \ 6  scan0141
Test report on under-bonnet temperatures for model 19-G-IV on the road with a plain bonnet fitted.11th Oct 1932Box 102 \ 6  scan0142
Table recording water temperature, under bonnet air temperature, and atmospheric temperature over time.11th Oct 1932Box 102 \ 6  scan0143
Results of a second temperature test with a revised thermometer position near the exhaust manifold.8th Jan 1932Box 102 \ 6  scan0144
Standardisation of chassis parts for a rivetless bonnet.8th Jan 1932Box 102 \ 6  scan0145
Standardisation of chassis parts form detailing costs and approvals for a new bonnet part.24th Jan 1932Box 102 \ 6  scan0146
Standardization of a new bonnet stop design for the 20/25 HP chassis.9th Jan 1934Box 102 \ 6  scan0147
Modifications to car bonnets to prevent denting and improve support.22th Nov 1932Box 102 \ 6  scan0148
The requirement for special bonnet stops on the 20/25 chassis.12th Jan 1934Box 102 \ 6  scan0149
Request to make and fit a standard 20/25HP non-louvred bonnet to car 21.G.4.15th Jun 1934Box 102 \ 6  scan0150
Reduction and design of louvered bonnets for the 20/25 HP model.22th Oct 1935Box 102 \ 6  scan0151
Potential issues with the fixing and painting of dummy louvres by coachbuilders.3rd Jul 1939Box 102 \ 6  scan0152
Transition from FBA to BZ brake lining material.3rd Jul 1939Box 102 \ 6  scan0153
Recommending a wholesale changeover to BZ type brake liners for various car models.20th Jun 1939Box 102 \ 6  scan0154
Order for parts to fix Bentley brake thumps and a modification to the fitting process.12th Jun 1939Box 102 \ 6  scan0155
Successful fitting of a hydraulic brake damper to a Bentley II to eliminate brake thumps and ordering more parts.9th Jun 1939Box 102 \ 6  scan0156
Solution for 'brake thumps' on the Bentley II model.23th Jan 1939Box 102 \ 6  scan0157
Forwarding a worn brake actuating shaft for examination due to peculiar wear, possibly from an electrical effect.15th Jun 1938Box 102 \ 6  scan0158
Stocking policy for relined brake shoes for various car models.8th Jun 1938Box 102 \ 6  scan0159
Return of a Bentley anti-judder device set incorrectly made in aluminium bronze.6th May 1937Box 102 \ 6  scan0160
Seizure of the brake mechanism on Bentley 3 1/2 & 4 1/4 Litre chassis, and suggesting modifications.5th Jan 1938Box 102 \ 6  scan0161
Improvements to brake shoe and front brake mechanisms to reduce cost and difficulty.5th Jan 1938Box 102 \ 6  scan0162
Complaint of seizing Bentley rear brakes and the subsequent modification to the shoe clearance.18th Oct 1937Box 102 \ 6  scan0163
Requesting an update on the production status of a redesigned spring for the pilot shoe of Bentley Brakes.12th Oct 1937Box 102 \ 6  scan0164
Use and cost-effectiveness of cadmium plating on steel bushes for rear brakes.9th Dec 1936Box 102 \ 6  scan0165
Test report on a modified lubrication system for Bentley rear brake actuating shafts.10th Dec 1936Box 102 \ 6  scan0166
Complaint regarding Bentley rear brake shoes seizing on the anchorage steel tube due to rusting.5th Dec 1936Box 102 \ 6  scan0167
Customer complaint about squeaking brakes on a Bentley, Chassis B.161.HM.10th Mar 1938Box 102 \ 6  scan0168


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