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
Technical analysis of issues with the Phantom II braking system, specifically regarding pedal travel loss due to heat.1st Nov 1923Box 12 \ 5  05-page144
Recommendation to alter the direct braking leverage to reduce pedal travel by 25%.1st Nov 1929Box 12 \ 5  05-page145
Analysis of brake adjustment and wear, discussing issues on the Phantom II and the adoption of new linings.1st Nov 1929Box 12 \ 5  05-page146
Report discussing brake wear, toggle adjustments, and comparing brake lining areas between the 20 HP and Phantom models.1st Nov 1929Box 12 \ 5  05-page147
Recommendations for brake liner thickness and area on future car models.1st Nov 1921Box 12 \ 5  05-page148
Remedy for front wheel brake squeaks on the Phantom model.7th Nov 1929Box 12 \ 5  05-page149
Clarifying the rear brake adjustment value for the Phantom II model.7th Nov 1929Box 12 \ 5  05-page150
Arrangements for brake squeaks on Phantom II cars.11th Nov 1929Box 12 \ 5  05-page151
Investigation into the cause of front brake squeaks, identified as false bedding of the brake shoes.9th Nov 1929Box 12 \ 5  05-page152
Causes and solutions for a clanking brake mechanism on release, and the related issue of sponginess.12th Nov 1929Box 12 \ 5  05-page153
Suggestions for modifying a lever system, including using a spring or inverted dashpot and rubber stops.2nd Nov 1929Box 12 \ 5  05-page154
Recommended brake leverages, cam angles, and proposals for a 10,000-mile test.2nd Nov 1929Box 12 \ 5  05-page155
Bringing reduced direct braking into production, noting the Test Department's work on shoe clearance.3rd Nov 1929Box 12 \ 5  05-page156
Causes and testing of front brake squeaks.14th Nov 1929Box 12 \ 5  05-page157
Proposed modifications to the Phantom II braking system levers.18th Nov 1929Box 12 \ 5  05-page158
Proposed modifications to the Phantom II brakes linkage system.18th Nov 1929Box 12 \ 5  05-page159
Clearance issues and proposed modifications for the Phantom II brakes.21th Nov 1929Box 12 \ 5  05-page160
Letter discussing clearances on Phantom 11 brakes and chasing a reply on rear brake modifications.21th Nov 1929Box 12 \ 5  05-page161
Modifications to the Phantom II brake system, specifically regarding lever lengths and cam angles.23th Nov 1929Box 12 \ 5  05-page162
Modifications to the Phantom II brake system, specifically concerning levers and cams.23th Nov 1929Box 12 \ 5  05-page163
Brief memo regarding a suggestion about Phantom II brakes.25th Nov 1929Box 12 \ 5  05-page164
Short memo regarding a suggestion about Phantom II brakes.25th Nov 1929Box 12 \ 5  05-page165
Specifying the maximum weight for the toggle lever during the bedding of front brake shoes.27th Nov 1929Box 12 \ 5  05-page166
Confirming the handover of N. scheme 2988, a damper for the Phantom II brake gear, for experimental purposes.29th Nov 1929Box 12 \ 5  05-page167
Two alternative proposals for wider rear foot brake shoes on the Phantom II rear axle.29th Nov 1929Box 12 \ 5  05-page168
Clarifying the method for curing brake squeaks on the Phantom II.3rd Dec 1929Box 12 \ 5  05-page169
Standardisation of chassis parts relating to an alteration to the rear brake leverages.11th Nov 1929Box 12 \ 5  05-page170
Effectiveness and pedal pressure of the vehicle's servo-assisted braking system.29th Nov 1923Box 12 \ 5  05-page171
Standardisation report for a front brake drum damper to reduce squeaking brakes.28th Sep 1929Box 12 \ 5  05-page172
Comparison of foot brake leverage data between the Phantom 1 and Phantom 11 models.30th Dec 1929Box 12 \ 5  05-page173
Hand-drawn diagram with notes specifying a cam profile for Right Hand (R.H.) drive cars.30th Dec 1929Box 12 \ 5  05-page174
Comparison of foot brake leverage data and pedal travel loss between the Phantom I and Phantom II models.30th Dec 1929Box 12 \ 5  05-page175
Hand-drawn diagram illustrating a component profile with annotations.2nd Jan 1930Box 12 \ 5  05-page176
Change to moulded asbestos brake linings on the Phantom II and subsequent brake leverage modifications.2nd Jan 1930Box 12 \ 5  05-page177
Technical bulletin regarding a change to moulded asbestos brake lining on the Phantom II to reduce squeaking.2nd Jan 1930Box 12 \ 5  05-page178
Letter from the American office to Derby regarding a new apparatus for 'shaving' brake liners and requesting a price quotation.6th Jan 1930Box 12 \ 5  05-page179
Specifications, dimensions, and weights of various plates.6th Feb 1930Box 12 \ 5  05-page180
Recommendation to change the rear foot brake lining material on the Phantom II due to rapid wear.6th Feb 1930Box 12 \ 5  05-page181
Proposal to increase the thickness of the Ferodo rear brake shoe lining for the 20 HP 10,000-mile test car.6th Feb 1930Box 12 \ 5  05-page182
Sir Henry Segrave's complaint regarding the rapid wear of Phantom II front brake drums compared to those on his Hispano.6th Feb 1930Box 12 \ 5  05-page183
Recommendation regarding the rear foot brake lining material for the Phantom II due to excessive travel when using Ferobestos.6th Feb 1930Box 12 \ 5  05-page184
Recommendation to thicken the front brake shoe linings for the Phantom II and 25 HP models.7th Feb 1930Box 12 \ 5  05-page185
Second report from the Design Committee detailing modifications for the 25 HP model.7th Feb 1930Box 12 \ 5  05-page186
Modification to the Phantom II's brake leverage and servo cams, recommended for retrospective fitting.7th Feb 1930Box 12 \ 5  05-page187
Issues with the braking system on the Phantom II, where the pedal travel is insufficient for full braking effectiveness, and proposing immediate modifications.1st Feb 1930Box 12 \ 5  05-page188
Braking issue on the Phantom II and proposing corrective modifications.8th Feb 1930Box 12 \ 5  05-page189
Cost and two different methods for altering the direct leverage braking on S.S. cars.21th Feb 1930Box 12 \ 5  05-page190
Persistent issue of brake squeaks on the Phantom II chassis.20th Mar 1930Box 12 \ 5  05-page191
Proposed design change to the Phantom II front brake linings to reduce brake squeaks.26th Mar 1930Box 12 \ 5  05-page192
Suggestion to use rivets with smaller heads for narrow brake shoes to prevent lining breakage.27th Mar 1930Box 12 \ 5  05-page193
Solution for squeaking front brakes on the Phantom II.27th Mar 1930Box 12 \ 5  05-page194
The causes of brake squeaks and the necessary alterations to fix the issue.27th Jun 1930Box 12 \ 5  05-page195
Cause of squeaks from a spring load shoe and proposing a testing solution before final fitting.27th Jun 1930Box 12 \ 5  05-page196
Fitting special front brake linings to chassis 24-EX to overcome spring squeaks.11th Apr 1930Box 12 \ 5  05-page197
Design and potential trial of an anti-squeaking device for road wheel brakes.30th May 1930Box 12 \ 5  05-page198
Mr. Hancock's anti-squeaking device for road wheel brakes.30th May 1930Box 12 \ 5  05-page199
Scheme for trying out a suggested device for road wheel brakes.4th Jun 1930Box 12 \ 5  05-page200
Requesting a scheme for testing a new road wheel brake device.4th Jun 1930Box 12 \ 5  05-page201
Modifications to road wheel brakes to eliminate squeaks and addressing issues with brake area.4th Jun 1930Box 12 \ 5  05-page202
Methods to eliminate squeaking from road wheel brakes by making the brake shoes flexible.4th Jun 1930Box 12 \ 5  05-page203
Technical memorandum detailing the principles and proposed alterations to prevent brake squeaks.4th Sep 1930Box 12 \ 5  05-page204
Addendum to a specification regarding the application of putty on coachbuilt bodies.8th May 1920Box 12 \ 5  05-page205
Persistent issue of squeaky brakes on the Phantom II model and potential solutions.3rd Jul 1930Box 12 \ 5  05-page206
New locomotive-style pivoted brake shoe design to address brake squeaking issues.10th Jul 1930Box 12 \ 5  05-page207
New locomotive-style pivoted brake shoe design to address brake squeaks.10th Jul 1930Box 12 \ 5  05-page208
New locomotive-type brake for the front axle to address brake squeaking.16th Aug 1930Box 12 \ 5  05-page209
Specifying the use of Ferodo lining for G.W.H. front brake shoes on car 22-EX.16th Aug 1930Box 12 \ 5  05-page210
Scheme for a locomotive-type brake to address brake squeaking.16th Aug 1930Box 12 \ 5  05-page211
Potential cure for front brake squeaks on the Phantom II, proposing to test it on Trials and Inspectors' cars.25th Aug 1930Box 12 \ 5  05-page212
Proposal to fit front brake shoes with an anti-squeak modification to London Trials cars.25th Aug 1930Box 12 \ 5  05-page213
Testing for a cure for front brake squeaks on the Phantom II.26th Aug 1930Box 12 \ 5  05-page214
Arrangements to fit a new anti-brake-squeak device (Hancock type) to trial cars.5th Sep 1930Box 12 \ 5  05-page215
Correspondence regarding the fitting of an anti-squeak brake device to two Phantom II cars.5th Sep 1930Box 12 \ 5  05-page216
Complaint about brake squeaking and referencing a locomotive-type brake solution.10th Sep 1930Box 12 \ 5  05-page217
Recommendation to increase the adjustment range of the hand brake lever on the left-hand chassis.11th Sep 1930Box 12 \ 5  05-page218
Detail drawings for a locomotive type front axle brake issued to the Experimental Department for testing to resolve squeaking.17th Sep 1930Box 12 \ 5  05-page219
Increasing the movement of the hand brake lever on a left-hand chassis.17th Sep 1936Box 12 \ 5  05-page220
Standardisation document for .375' thick front brake liners to increase their lifespan.5th Jul 1930Box 12 \ 5  05-page221
Standardisation of chassis parts relating to wider rear brake shoes.5th Jun 1930Box 12 \ 5  05-page222
Standardisation of wider rear brake shoes for chassis parts.5th Jun 1930Box 12 \ 5  05-page223
Experimental alteration to the foot brake design for the 40/50 HP model.12th Nov 1930Box 12 \ 5  05-page224
On an experimental alteration to the 40/50 HP foot brake design regarding the locking pin and use of eccentric pins.12th Nov 1930Box 12 \ 5  05-page225
Feedback and safety concerns regarding the eccentric toggle adjustment for rear brakes.12th Nov 1930Box 12 \ 5  05-page226
Issues with squeaking brakes and steering tube adjustments for car 26-EX.26th Feb 1930Box 12 \ 5  05-page227
Requesting a car be brought to the Works to examine its steering parts.29th Nov 1930Box 12 \ 5  05-page228
Requesting particulars, such as a sketch or description, for anti-squeak front brake shoes fitted to the 25-EX model.2nd Dec 1930Box 12 \ 5  05-page229
'Non Squeak brakes PII' enquiry and an attached report.4th Dec 1930Box 12 \ 5  05-page230
Status of fitting a non-squeaking brake scheme to Phantom II cars.1st Dec 1930Box 12 \ 5  05-page231
Proposal for new brake shoes with pivoted ends to prevent squeaks.4th Dec 1930Box 12 \ 5  05-page232
Revised form of centre pivoted brake shoe.4th Dec 1930Box 12 \ 5  05-page233
Covering note sent with a sketch of the anti-squeak brake shoe.5th Dec 1930Box 12 \ 5  05-page234
Anti-squeaking measures for Phantom II brakes.6th Dec 1930Box 12 \ 5  05-page235
Fitting of an anti-squeaking device to Phantom II brakes.8th Dec 1930Box 12 \ 5  05-page236
Modifications to brake drums and shoes for 25HP & 45HP cars.12th Nov 1930Box 12 \ 5  05-page237
Follow-up memo regarding the issuance of a standardisation sheet for brake squeaks.15th Dec 1930Box 12 \ 5  05-page238
The standardisation sheet for an anti-squeak brake shoe.16th Dec 1930Box 12 \ 5  05-page239
'Hancock scheme' to address brake squeaks on various chassis.16th Dec 1930Box 12 \ 5  05-page240
Brake shoe design and comparing brake lining areas against competitor vehicles.16th Dec 1930Box 12 \ 5  05-page241
Table detailing the dimensions of servo-operated brakes for various car models.2nd Dec 1928Box 12 \ 5  05-page242
Comparison table detailing the particulars of servo-operated front and rear brakes for various car models.16th Dec 1930Box 12 \ 5  05-page243


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