Rolls-Royce Archives
| Identifier | Entry | ||
| 05-page001 | Technical drawing illustrating axle torsional movement and its effect on brake pedal travel. | ||
| View original record | METHOD OF CONDUCTING TEST FRONT OF CAR POINTS FIXED RELATIVE TO THE FRAME 1, 2, 3 ETC. IN RELATION TO THE AXLE WHEN THE LATTER WINDS UP ON THE SPRINGS DUE TO TORQUE APPLIED TO LOCKED ROAD WHEELS.… | ||
| 05-page002 | Suggestions for double rear brake schemes and camshaft arrangements. | ||
| View original record | To BY. from DA. c. to CJ. Hs. X. 7360 DA2/M26.1.26. EAC. 7. DOUBLE REAR BRAKES. We send herewith N.sch.2008,.2129., and 2130., which are suggestions for camshaft, arrangements in connection with the… | ||
| 05-page003 | Outlining design points and improvements for rear brakes on a Phantom model. | ||
| View original record | X.7360 To DA. BY. Hs. FROM R. & E. LE CANADEL. c. to CJ. BJ. RG. R2/MA.2.26. EAC.7. REAR BRAKES. These could go on trial with Phantom, but we are trying another design for the following reasons -… | ||
| 05-page004 | Design schemes for a supporting pin and drum, with references to sketches. | ||
| View original record | -2- SKETCH. or at least have outer flange - SKETCH. (10) To make a suitable supporting pin one might use ferrule constructions, thus - SKETCH. One thinks this scheme seems light and simple, allowing… | ||
| 05-page005 | Design improvements for a rear brake system. | ||
| View original record | X. 7380 To DA. ) BY. } FROM R. Hs. ) LE CAVADEL. R3/M8.2.26. c. to CJ. BJ. RG. EAC.7. REAR BRAKES. When the two actuating shafts are 2" (centres) apart, it may be better to make a single die casting… | ||
| 05-page006 | The design of double rear brakes, incorporating initial suggestions and awaiting further remarks before proceeding with detailing. | ||
| View original record | X. 7360 BY. from DA. c. to CJ. Hs. EAC.7. DOUBLE REAR BRAKES. Herewith we send N.sch. 2149 and 2150., shewing the design of the double rear brakes with sheet metal brake carrier, and brake drum etc.… | ||
| 05-page007 | Mr. Royce's instruction to fit the first EAC.7 model with existing New Phantom double rear brakes. | ||
| View original record | To BY. from DA. c. to CJ. Hs. 47360 DA3/M11.3.26. EAC.7. DOUBLE REAR BRAKES. X. 8360 X. 7360 Mr. Royce has said that the first EAC.7. should be fitted with the existing New Phantom rear brakes. This… | ||
| 05-page008 | The collection and fitting of new Dunlop rear hubs for a 10,000-mile trial. | ||
| View original record | X. 7360 Hs. C. R.C. E.A.C.VIII. BY6/H. 11.6.26. We have obtained from the Dunlop Company three pairs of rear hubs of a similar design to those which are used on the lightened front axle at present on… | ||
| 05-page009 | Modifications to rear brake operating gear and frame gussets for the fitment of hydraulic shock dampers. | ||
| View original record | X7360 To BY. from DA. c. to BJ. Hs. DA3/M23.7.26. EAC.7. REAR BRAKES. X.7360 X.7380 Herewith we send N.sch.2232 shewing the modifications to the rear brake operating gear and frame gussets, which are… | ||
| 05-page010 | Modifications to the EAC-7 rear brakes, including the camshaft, toggle gear, and a new method of cutting cams. | ||
| View original record | X. 7360 To BY. from DA. c. to BJ. Hs. DA4/M23.7.26. EAC-7 REAR BRAKES. We send herewith N.sch.2234 shewing the promised modification to the rear brake camshaft and toggle gear as required by R. It… | ||
| 05-page011 | Alterations to the rear brake differential mounting and related components like the servo pull and hand brake lever. | ||
| View original record | To BY. from DA. c. to BJ. Hs. X7360 DA5/M27.8.26. EAC.7. REAR BRAKE DIFFERENTIALS ETC. X.7310 X.7380 Herewith we send N.sch.2250 shewing the mounting of the rear brake differential on the gearbox… | ||
| 05-page012 | Modifications for the servo stop and brake linkage arrangement. | ||
| View original record | To BY. from DA. c. to BJ. Hs. X7420 DA3/M27.8.26. EAC.7. SERVO STOP, BRAKE LINKAGE ETC. X. 7370 X. 8420 X7420 We send herewith N.sch.2256 shewing the arrangement of the servo stop working below the… | ||
| 05-page013 | Modifications to the Phantom servo brake gear to prevent the balancing lever pin fouling the suspension link. | ||
| View original record | To BY. from DA. c. to BJ. Hs. Handwritten: X 7420 DA4/M27.8.26. PHANTOM SERVO BRAKE GEAR. X.7370 X.8370 X.7420 With reference to the question of preventing the pin in the upper jaw of the balancing… | ||
| 05-page014 | Oversight regarding the alignment of rear brake cables and the accompanying solution. | ||
| View original record | X. 7360 To BY. from DA. c. to BJ. Hs. DA2/M21.9.26. EAC-7 REAR BRAKE DIFFERENTIALS. Referring to the question of the alignment of the rear brake cables we agree that we have made an oversight on… | ||
| 05-page015 | Issue of squeaking front brakes on cars fitted with a new lightened axle. | ||
| View original record | To R. from Hs. c. to BJ. Wor. c. to E. BY. c. to RG. DA. X7420 Hs3/LG21.9.26. SQUEAKING BRAKES. X8420 We are rather concerned with the fact that we have had more front brake squeaks on cars fitted… | ||
| 05-page016 | Modifications to the servo linkage and hand brake lever assembly. | ||
| View original record | To BY. from DA. c. to BJ. HS. X7420 DAL/M2.10.26. EAC.7. SERVO LINKAGE. X.7370 X.7420 Replying to BY/CGH6/H27.9.26., we regret that the omission to shew the hand brake lever has caused us to take up… | ||
| 05-page017 | Summary of tests carried out on front wheel brakes fitted on model 12-EX to overcome squeaks. | ||
| View original record | To R. from Hs/GWH. C.c. to RH. EV. C. to GY. X7420 not sent out Hs/GWH1/LG20.10.26. SUMMARY OF TESTS CARRIED OUT ON FRONT WHEEL BRAKES FITTED ON 12-EX TO OVERCOME SQUEAKS. We carefully checked over… | ||
| 05-page018 | Brake squeaking, suggesting a damping arrangement fitted to the drums as a solution. | ||
| View original record | contd :- -2- the present standard brakes and the new type which we will report on. Our opinion is that to definitely keep a brake from squeaking with the present design of brakes, a damping… | ||
| 05-page019 | Proposal for a scheme to fit dampers to front brake drums on a new lightened axle to eliminate squeaking. | ||
| View original record | To R. From Hs. c. to BJ. Wor. c. to E. RG. c. to DA. BY. Handwritten: X7420 SQUEAKING BRAKES. Handwritten: X8420 We consider it is important that we should have a scheme for fitting dampers to the… | ||
| 05-page020 | Investigation into why new, lighter front brakes fitted to axle G.74294 are more prone to squeaking. | ||
| View original record | To R. from Hs/GWH. c. to BJ. Wor. c. to RG. E. c. to DA. BY. x7420 Hs/GWH1/LG25.10.26. WHY THE NEW TYPE FRONT BRAKES FITTED TO AXLE G.74294 ARE MORE PRONE TO SQUEAK THAN THE PRESENT STANDARD. x7420… | ||
| 05-page021 | Summary of tests carried out to overcome squeaks from front brakes fitted to the 12-EX model. | ||
| View original record | To R. from Hs/GWH. c. to BJ. Wor. c. to RG. E. c. to BY. DA. x2420 Hs/GWH2/LG25.10.26. SUMMARY OF TESTS CARRIED OUT TO OVERCOME SQUEAKS FROM FRONT BRAKES FITTED TO 12-EX. We have been able to damp out… | ||
| 05-page022 | Proposal to modify clearances on Phantom front brakes to reduce side movement and prevent rattle. | ||
| View original record | Mx. c. to BP c. to Hs. c. to Hm. X7420 RECEIVED OCT 27 1926 Hs BY/Cgh12/G.27.10.26 PHANTOM FRONT BRAKES. With reference to Mx2/T22.10.26. we have no scheme for preventing the rattle of front brake… | ||
| 05-page023 | Solutions for squeaking brakes on the 40/50 HP model, and the resulting problem of 'axle jaggers'. | ||
| View original record | To R. from Hs/Rm. c.c. to BJ. Wor. c.c. to RG. E. c.c. to DA. BY. c.c. to OY. Handwritten: X7420 Hs/Rm2/LG23.11.26. 40/50 HP. - SQUEAKING BRAKES. Handwritten: X8420 Whilst we believe that satisfactory… | ||
| 05-page024 | Corrections and suggestions for the brake operation on the EAC-7 chassis. | ||
| View original record | To BY. from DA. c. to BJ. Hs. X7420 DA3/M16.12.26. EAC-7 - BRAKE OPERATION. X.7420 X.7310 Replying to BY4/H8.12.26., we see that we have made an oversight in putting the taper pegs not at right angles… | ||
| 05-page025 | Investigation into lost brake pedal movement during braking on the EAC-V11 model. | ||
| View original record | Y7470 To R. from Hs/Ru. c. to BJ. Wor. c. to RG. R. c. to BY. DA. Hs/Ru3/LG28.1.27. LOST PEDAL MOVEMENT - EAC-V11. Y7470 ================================== We have been rather concerned on this car… | ||
| 05-page026 | Analysis of lost pedal movement in the rear axle brake linkage, including a data table and diagram. | ||
| View original record | contd :- -2- surprising but is substantially borne out in practice. The simplest method of overcoming the difficulty is to reduce the direct rear braking, but this is already less than on EAC.111. We… | ||
| 05-page027 | Test report comparing pedal travel loss in the rear axle linkage for the 40/50 HP and EAC.V11 models. | ||
| View original record | contd :- -3- In order to determine the relative amount of pedal travel lost in the rear axle linkage on the 40/50 and EAC.V11 cars, a test was carried out in which the brakes were brought into contact… | ||
| 05-page028 | Analysis of the EAC.VII axle's flexibility, twist under braking torque, and lost movement due to elasticity. | ||
| View original record | CONTD :- -4- flexibility in EAC.VII shafts and mountings. (b) Twist of EAC.VII axle under braking torque. In order to determine the amount of pedal travel lost due to the rear axle winding up on brake… | ||
| 05-page029 | Test results and design considerations for front wheel brake torsional pull-off springs. | ||
| View original record | x7420 To BY. from Hs/Rn. Hs/Rn3/LG31.1.27. FRONT WHEEL BRAKES. x8420 TORSIONAL PULL OFF SPRINGS. From tests we have carried out we find that a load from 9 to 9 1/4 lbs. at the extremity of lever… | ||
| 05-page030 | Unsatisfactory friction arrangement on the EAC.V11 servo linkage, noting an underperforming spring. | ||
| View original record | To DA. from Hs/Rn. X9420 Hs/Rm3/LG24.2.27. RE, FRICTION ON EAC.V11 SERVO LINKAGE. X7370 The friction arrangement for the swinging link on EAC.V11 is unsatisfactory. We give below a report from GWH. We… | ||
| 05-page031 | Braking performance, axle behaviour, road hopping, and the need for improved damping. | ||
| View original record | To Hs/Rm. To DA. from R. c. to BJ. WOR. BY. X7420 R3/M12.3.27. R11/LG7.3.27. EAC. 7. BRAKING ETC. X.7420 X.5420 X.7240 I can understand various occurrences of sponginess, but not any material loss of… | ||
| 05-page032 | Tests conducted on the EAC.V11 braking system to improve rigidity and address rear axle instability during rapid stops. | ||
| View original record | To R. from Hs/Rm. c. to BJ. Wor. c. to RQ. E. c. to DA. BY. Handwritten: X7420 Upside down text bleed-through: CERTIFICATES OF INSPECTION Upside down text bleed-through: ROLLS-ROYCE ENGINES AND… | ||
| 05-page033 | Friction and load characteristics of the EAC.7 servo linkage. | ||
| View original record | 47470 To DA. from Hs/Rn. Hs/Rm3/LG21.3.27. FRICTION OF EAC.7. SERVO LINKAGE. X7370 With reference to DA2/M17.3.27. We believe that your query is due to the peculiar method in which the Works take the… | ||
| 05-page034 | Suggestions to reduce sponginess and improve the EAC.7 brakes. | ||
| View original record | To BY. Hs/Rm. from DA. c. to BJ. DA8/M25.3.27. X7420 EAC.7. BRAKES. X. 7420 X. 8420 We have gone into the question of reducing the sponginess on the EAC.7. brakes, and send herewith N.schs. 2384/5… | ||
| 05-page035 | Complaint of insufficient friction in the servo linkage by supplying a new square wire spring. | ||
| View original record | To BY. from DA. c. to BJ. Hs. X 7420 DA5/M7.4.27. EAC.7. FRICTION HEAD IN SERVO LINKAGE. X. 7370 X. 7310 X. 7420 With reference to the complaint that it is found impossible to get more than 16 lbs. in… | ||
| 05-page036 | Modifications to the brake camshafts to improve stiffness and reduce weight. | ||
| View original record | To BY. from DA. c. to BJ. Hs. X7420 DA2/M3. 5. 27. EAC.7. FRONT BRAKES. X.7420 X.7090 X.7360 With reference to the question of reducing the sponginess of the rear brakes, we send herewith N.sch.2405.,… | ||
| 05-page037 | Stiffening camshafts to reduce sponginess in the rear brakes for the EAC.7 model. | ||
| View original record | To BY. from DA. c. to BJ. Hs. X7360 DA2/M3. 5. 27. EAC. 7. FRONT BRAKES. X. 7420 X. 7090 X. 7360 With reference to the question of reducing the sponginess of the rear brakes, we send herewith N.sch.… | ||
| 05-page038 | Modification to address sponginess in the EAC.7 rear brakes. | ||
| View original record | To BY. from DA. To Hs. X7360 DA2/M9.5.27. SPONGINESS IN EAC.7. REAR BRAKES. X.7360 X.7090 We intended when sending you the stiffened camshafts, to say that N.sch.2385 should be proceeded with,… | ||
| 05-page039 | Seeking criticism on a proposed modification for all-metal covers for brake actuating shafts. | ||
| View original record | Y7420 Hs/Mr.Hancock. BY9/H. 25.8.27. MODIFICATION TO ALL-METAL COVERS FOR BRAKE ACTUATING SHAFTS. Referring to the scheme shown on GL.213 we would like to have any criticisms you can make about this,… | ||
| 05-page040 | Recommending the standardisation of a metal dust cover for Phantom rear brake actuating shafts. | ||
| View original record | To BY. from Hs. X7426 Hs4/LG27.8.27. RE. METAL DUST COVER FOR PHANTOM REAR BRAKE ACTUATING SHAFTS. X 8420 Replying to BY9/H25.8.27. We had the following fittings G.75570/5 made up and fitted to 12-EX… | ||
| 05-page041 | The sending of two new rear brake pull off springs with reduced power. | ||
| View original record | BY. from DA. c. to BJ. Hs. X.7420 DAL/M12.9.27. EAC.7. REAR BRAKE PULL OFF SPRINGS. With reference to R's instructions to reduce the power of the pull off springs on the rear brakes, we send two… | ||
| 05-page042 | The revised rear brake gear for the Phantom Sports car models X.8360 and X.7360. | ||
| View original record | 47360 BY. from DA. c. to BJ. Hs. DA3/M8.10.27. PHANTOM SPORTS. X. 8360 X. 7360 Herewith we send N.sch.2472 shewing the revised rear brake gear for the above car on the lines of the EAC.7. brakes. So… | ||
| 05-page043 | Dispatch of drawings for the clutch pit, front brake differential, and operating shaft. | ||
| View original record | BY. from DA. c. to BJ. HS. +7420. DA2/M7.12.27. EAC.10 GEARBOX ETC. X.7310 X.7420 Herewith we send N.sch. 2521 shewing the clutch pit. This shews the arrgt. of the front brake differential and clutch… | ||
| 05-page044 | Torque estimations and recommendations for EAC.10 servo gears. | ||
| View original record | To BY. from Hs/Rm. +7420 +7370 lis/Rm4/LG13.12.27. We understand you are interested in the torque which will have to be transmitted through the EAC.10 servo gears. We estimate that this will be about… | ||
| 05-page045 | Arrangement of brake differentials, referencing schedule N.sch.2539 and gearbox mounting. | ||
| View original record | BY. from DA. c. to BJ. Hs. 7420 DA1/M13.2.28. EAC.10 BRAKE DIFFERENTIALS. X.7420 X.7370 X.7310 We send herewith N.sch.2539 shewing the arrgt. of the brake differentials and connection to the servo. We… | ||
| 05-page046 | Design and modification of the EAC.10 hand brake lever shaft and equaliser. | ||
| View original record | BY. from DA. c. to BJ. Hs. Y7330 DA1/M23.2.28. EAC.10 HAND BRAKE LEVER SHAFT AND EQUALISER. Herewith we send N.sch.2551, shewing the arrgt. of the hand brake lever and equaliser on EAC.10., and giving… | ||
| 05-page047 | Design of a rear brake compensating shaft. | ||
| View original record | DA. BY. HS. c. to BJ. Wor. 47330 R1/M12.3.28. EAC.10 N.SCH.2539. REAR BRAKE COMPENSATING SHAFT, ETC. X. 7360 X. 7330 I am not altogether pleased with this; it looks complicated and costly, without… | ||
| 05-page048 | Proposal for centralised chassis lubrication for the rear axle. | ||
| View original record | BY. from DA. c. to BJ. Hs. +7360 DA2/M17.3.28. X.3806 X.7350 X.7360 CENTRALISED CHASSIS LUBRICATION. Herewith we send N.schs. 2565 shewing a proposal for carrying oil along the spring to the rear axle… | ||
| 05-page049 | Design review memo on drawing N.sch.2551, highlighting issues with a lever offset and tool accessibility. | ||
| View original record | X. 7330 DA. BY. from R. HS. c. to BJ. Wor. R2/M.2.4.28. N.sch.2551 seems excellent. There are just one or two small points. The looking down lever on the hand lever shaft has an offset of about ½". It… | ||
| 05-page050 | Phantom brake testing actions agreed upon at a Derby conference. | ||
| View original record | X7360 To Wor. (crossed out) From BJ. Copy to Hs. EH. C. (crossed out) SE. EP. CWB. PN. (crossed out) HS (handwritten annotation) Phantom. BJ10/H2.5.28 It was agreed at a Derby conference yesterday… | ||
| 05-page051 | Required modifications for centralised chassis lubrication points. | ||
| View original record | BY. from DA. c. to BJ. WS. 47330 DA1/M18.5.28. X.3805 X.7330 X.7150 CENTRALISED CHASSIS LUBRICATION. Referring to the list attached to DA3/M17.5.28., the following points require slight modification,… | ||
| 05-page052 | Instructions regarding the fitting of an Enots nipple for lubrication, replacing the Bijur pump. | ||
| View original record | contd :- -2- With reference to the main unit - called (C) on list - it is intended that there shall be an Enots nipple at some convenient point under the bonnet, by the application of a gun to which,… | ||
| 05-page053 | Centralised chassis lubrication for the brake differential and hand brake lever. | ||
| View original record | BY. from DA. c. to BJ. Hs. +7330- DA1/M23.5.28. CENTRALISED CHASSIS LUBRICATION. X.3806 X.7330 We send herewith N.sch. 2611 shewing the lubrication arranged on the brake differential and hand brake… | ||
| 05-page054 | Standardisation document for rear brakes similar to the 20 HP model. | ||
| View original record | RR 755 REVISED (10H) (DE649 9-12-26) 5M. 2/1157. COMPLETED 2.7.28 STANDARDISATION of CHASSIS PARTS. Date 2.5.28 Description of Parts.: REAR BRAKES SIDE BY SIDE SIMILAR TO 20 HP. Origin.: To improve… | ||
| 05-page055 | Form for the standardisation of chassis parts, detailing the first chassis fitment, test date, and tooling costs. | ||
| View original record | STANDARDISATION of CHASSIS PARTS X 1636 (1) The number of the first chassis on which the new part will be fitted. G.2.B series. (2) Date when the chassis will be handed to test. 12.11.28 (3) Cost of… | ||
| 05-page056 | Standardisation of brake linings for the 40/50 HP model to reduce squeaking. | ||
| View original record | RR 785 REVISED (10H) (D.C. 777 - 29 - 2 - 28) M C. L.TD COMPLETED 2.10.28 STANDARDISATION of CHASSIS PARTS. Description of Parts. BRAKE LININGS. 40/50 HP. Origin. To reduce squeaking brakes.… | ||
| 05-page057 | Recommendation to modify the drain pipes on the Phantom's side-by-side rear brakes to prevent them from being choked by mud. | ||
| View original record | 47420 EY. from Hs/GWH. c. to DA. Hs/GWH/LG9.10.28. RE. DRAIN PIPE ON PHANTOM - SIDE BY SIDE REAR BRAKES. 78420 As previously reported, these drain outlets become choked up with mud thrown back from… | ||
| 05-page058 | Instruction to use the attached damper sector on the first three SS brakes. | ||
| View original record | To By. from Hs/Rm. X7420 Hs/Rm5/LG13.11.28. We should like to use the attached damper sector on the first three SS. brakes. Will you please instruct accordingl . Hs/Rm. | ||
| 05-page059 | Instructions and diagram for fitting wooden plugs into brake shafts for rear axles. | ||
| View original record | BY. from Hs/Rm. X7420 Hs/Rml/LG16.11.28. WOODEN PLUGS FOR BRAKE SHAFTS. G.76241/2/3/4. X7420 X7350 We send you herewith wooden plugs for the side by side brake drums rear axle. These plugs have proved… | ||
| 05-page060 | Recommendation to adopt scheme N.sch.2746 for the drain on the side by side rear brakes. | ||
| View original record | To BY. from Hs. c. to Wor. +7360 Hs1/LG26.11.28. SIDE BY SIDE REAR BRAKES. f8360 We should recommend that N.sch.2746 be adopted for the drain on the side by side rear brakes. Hs. | ||
| 05-page061 | Poor braking on car 18-EX, questioning if leverage changes were made. | ||
| View original record | To BY. from Hs/GWH. [Handwritten]: X7420 Hs/GWH1/LG4.12.28. BRAKES - 'SS'. [Handwritten]: X7420 / x7470 (struck through) The braking on 18-EX is very poor - excessive weight has to be applied to the… | ||
| 05-page062 | Delay in brake effectiveness and a potential diagnosis for the issue. | ||
| View original record | X. 7420 Ans. from DA. 'SS' X. 7420 X. 7360 DA1/M6.12.28. We noticed that the full effect of the brakes came on a considerable while after the pedal had been pushed fully on. In view of the rather feel… | ||
| 05-page063 | Requesting modifications for 'SS' brakes on a 19-EX model. | ||
| View original record | To RHC/H.Smith from Hs/Rm. X7420 Hs/Rm2/LG13.12.28. 'SS' BRAKES. X7420 X7370 Will you please fit up 19-EX brakes with the following modifications from standard :- 1. 30° cans. 2. Countershaft lever… | ||
| 05-page064 | Instruction to experimentally alter the 'SS' chassis brakes by fitting 30° servo cams and increasing the length of lever G.76811. | ||
| View original record | To BY. from Hs/Rn. X7420 Hs/Rn6/LG17.12.28. 'SS' BRAKES. X7420 [handwritten over title] [strikethrough]X7370[/strikethrough] [handwritten over title] Will you please instruct [word 'xxxxxx' is crossed… | ||
| 05-page065 | Query regarding the correct angle for the Phantom servo operating cams, seeking confirmation between 45° and 55°. | ||
| View original record | Hs/Rm. from DA. c. to X7420 DA1/M18.12.28. 'SS' SERVO & BRAKES. X.7370 XJ420 The detail drgs. of the Phantom servo operating cams which we have give a 55° angle. We recollect your speaking of a 45°… | ||
| 05-page066 | Requesting modifications to car 19-EX, concerning the engine feet, gearbox support, and brakes. | ||
| View original record | To RHC. from Hs/Rm. x7420 Hs/Rm4/LG19.12.28. 19-EX CAR. x7005 We require solid front engine feet on this car and the adjustable support behind the gearbox. The brakes on this car are also useless.… | ||
| 05-page067 | The cam angle used on the Phantom servo and brakes. | ||
| View original record | X7420 To DA. from Hs/Rn. c. to BY. c. to Wor. Hs/RM3/LG22.12.28. 'SS' SERVO AND BRAKES. X7370 ----- X7420 With reference to DA1/M18.12.28. We find the present angle of cam being used on the Phantom is… | ||
| 05-page068 | Issues with rear brakes filling with water, axle manufacturing variations, and proposed solutions. | ||
| View original record | BY. from DA. c. to Hs. 47420 DA1/M7.1.29. 'SS' BRAKES. X.7360 X.7420 The trouble of the rear brakes filling with water and mud is due to the lip on the guard overlapping the rib, on the brake drum, so… | ||
| 05-page069 | The trial of aluminium castings for 'SS' model rear brakes as a cost-saving alternative to duralumin. | ||
| View original record | Hs. BY. from DA. 47420 DA3/M7.1.29. 'SS' BRAKES. X.7420 X.5420 X.7360 We believe that the duralumin forged brake shoes are very expensive. Since aluminium has answered satisfactorily on the Phantom… | ||
| 05-page070 | High cost of duralumin forged brake shoes and proposing a trial of aluminium castings for 'SS' rear brakes. | ||
| View original record | Hs. BY. from DA. 47360 DA3/M7.1.29. 'SS' BRAKES. X.7420 X.5420 X.7360 We believe that the duraluminn forged brake shoes are very expensive. Since aluminium has answered satisfactorily on the Phantom… | ||
| 05-page071 | Issues with 'SS' brakes filling with water and mud, with proposals for design modifications. | ||
| View original record | BY. from DA. c. to Hs. - 47360 DAL/M7.1.29. 'SS' BRAKES. X. 7360 X. 7420 The trouble of the rear brakes filling with water and mud is due to the lip on the guard overlapping the rib, on the brake… | ||
| 05-page072 | Experimental reduction in the number of oil drain holes in the S.S. & Phantom rear brake drums. | ||
| View original record | C. BY TWD. DA. c. HS. X7420 BY5/G.9.1.29. S.S. & PHANTOM REAR BRAKE - OIL DRAIN HOLES IN DRUMS. ---------------------------------------------------- Referring to DAL/M7.1.29. we are modifying the mud… | ||
| 05-page073 | Telegram discussing the disadvantages of increasing cam angle and proposing thirty-degree cams as a compromise. | ||
| View original record | HIVES ROYCAR DERBY = S S BREAKING FIND ON INVESTIGATION THAT TO INCREASE CAM ANGLE INVOLVES GREATER TORQUE ON DIFFERENTIAL SHAFT AND THEREFORE SPRINGINESS AND OTHER DISADVANTAGES STOP PROPOSE TO USE… | ||
| 05-page074 | Inquiry regarding the effectiveness of the rear brake mud shield on the Phantom model. | ||
| View original record | To Mx. from Hs. Y7360 48350 Hs2/LG19.1.29. We should be glad if you will confirm that the rear brakes on the present Phantom do keep free from mud. It has been found on the SS. that the shield was… | ||
| 05-page075 | Investigation into the angle of servo cams and lever length on the 'SS' brake gear. | ||
| View original record | Hs. from DA. 47420 DA1/M27.1.29. 'SS' BRAKE GEAR. X.7420 X.7370 We investigated the question of the angle of the servo cams, length of lever, etc, on the SS. servo and found that to obtain the… | ||
| 05-page076 | Performance issues with 'SS' Brakes, including poor proportioning, noise, and water ingress concerns. | ||
| View original record | X. 7420 R1/M3. 2. 29. Hs. DA. from R. BY. c. to SG. Wor. E. 'SS' BRAKES+ Mr. Hancock says that the back brakes appear to be doing less than their usual proportion. Dodd says some of the brakes grunt.… | ||
| 05-page077 | Loss of oil pressure after braking, with proposals for testing and sump system modifications. | ||
| View original record | 77420 R. from E. c. to SG. Hs. BY. LOSS OF OIL PRESSURE AFTER BRAKING. X.7010 X.7000 X.7060 X.7420 X7190 We suggest that an open bottom hair crankcase should be taken, charged with oil, and be… | ||
| 05-page078 | Comparison of oil suction systems and strainer designs between the SS, Phantom, and India chassis models. | ||
| View original record | contd :- -2- an open bottom half test would confirm this. The Arrol Aster engine is fitted with leather flap valves over the wholes through the cross webs but we do not want to propose anything of… | ||
| 05-page079 | Effect of braking on oil flow and potential solutions regarding filters and diaphragms. | ||
| View original record | E. Hs. BY. from R. c. to SG. Wor. Da. X7420 R6/M15.2.29 X.7420 X.7190 SS. BRAKING EFFECT ON OIL. This does not seem to do any harm on 18-EX, so one thinks it is not serious because brakes are used… | ||
| 05-page080 | Alterations to the S.S. rear brake camshafts and associated components. | ||
| View original record | BY. from DA. c. to SG. Hs. X7360 DA2/M9.2.29. S.S. REAR BRAKE CAMSHAFTS+ X.7090 X.7360 Herewith we send N.sch.2821 shewing the chauffeurs adjustment ends of the camshafts adopted to the EAC.14 scheme.… | ||
| 05-page081 | Production of the 'SS' servo and brake mechanism and the material for servo linings. | ||
| View original record | To BY. from Hs/Rn. 'SS' SERVO MECHANISM. We consider that it will be safe to proceed with the SS. servo and brake mechanism with the exception of cams, and servo linings for a further series of… | ||
| 05-page082 | Request for parts to be made for brake gear experiments as per sketches HS.210/211/212. | ||
| View original record | To RHC. from Hs/Rn. X7420 Hs/Rn4/LG13.3.29. X5420 The Works are having to go slow on brake gear material until we have completed our tests. We require pieces made to sketches HS.210/211/212 in order… | ||
| 05-page083 | Clearance issue with the 'SS' brake cables. | ||
| View original record | To R. from DA. V7420 'SS' BRAKE CABLES. The L.H. front brake cable comes rather close to the front expansion box on the car fitted with the stay to the crankchamber. It was intended that the available… | ||
| 05-page084 | Cover note explaining an instruction regarding SS cars was sent to Mr. Royce in error. | ||
| View original record | BY. Hs. from DA. X. 7420 DA1/20.3.29. Attached is DAL/M15.3.29. which was sent from Derby to Mr. Royce in error. It was intended as an instruction to the Works in connection with the SS. cars that… | ||
| 05-page085 | Clearance issue with the L.H. front brake cable and a proposed modification. | ||
| View original record | R. from DA. DA1/M15.3.29. SS. BRAKE CABLES. The L.H. front brake cable comes rather close to the front expansion box on the car fitted with the stay to the crankchamber. It was intended that the… | ||
| 05-page086 | Request to modify the front brake equaliser shaft for the 12-EX model. | ||
| View original record | Y7330 To RHC. from Hs/Rm. Hs/Rm3/LG3.4.29. 12-EX BRAKE DISTRIBUTION. X7420 Will you please fit to the front brake equaliser shaft of 12-EX :- 2 levers G.73149 in place of levers G.75413 and alter the… | ||
| 05-page087 | Requesting different types of 'SS' brake linings for testing. | ||
| View original record | +7420 To ROY. from Hs/Rn. Hs/RnL/LG4.4.29. 'SS' BRAKE LININGS. +719. Will you please obtain for us :- 4 complete sets of S. S. Brake Linings - G.77082 front (8 off) G.77083 rear (8 off) in Ferodo… | ||
| 05-page088 | Letter to Mr. Hancock in France regarding a complaint of grabbing brakes and potential remedies. | ||
| View original record | X7420 Expl: Dept: Rolls-Royce Ltd., Derby. Hs9/LG11.4.29. Hotel de France, Chateauroux, Indre, France. X7941 Mr. Hancock from Hs/Rn. RE. GRABBING BRAKES. We note that you have complained of grabbing… | ||
| 05-page089 | Continued letter regarding the replacement of cotton duck liners with Ferodo liners and cams for braking system adjustments. | ||
| View original record | contd :- -2- In case you can do nothing with the cotton duck liners, we are sending you some Ferodo liners by way of replacement and some 45° cams. We have found over here that Ferodo plates seem to… | ||
| 05-page090 | Letter discussing excessive front braking on 'SS' models and potential solutions involving servo efficiency and materials. | ||
| View original record | x7420 Expl: Dept: Messrs. Rolls-Royce Ltd., Derby. 15th. April 1929. H941 Hotel de France, Chateauroux, Indre, France. MR. Hancock from Hs/Rm. 'SS' BRAKES. With reference to your note of the 12th. We… | ||
| 05-page091 | Brake lining materials, servo efficiency, and modifications to braking and steering components. | ||
| View original record | contd :- -2- We are also going to change the type of brake lining as we think Tenoid is inferior even to Ferodo for squeaking. We recommend that you do not try and alter the leverage to the front… | ||
| 05-page092 | Page requesting a report on a side steering tube. | ||
| View original record | contd :- -3- think fit. It is most important that we should get a report on this side steering tube. Hs/Rn. | ||
| 05-page093 | Programme of modifications for 'SS' braking systems, including new linings and other efficiency improvements. | ||
| View original record | To RHC from Hs/Rm. X7420 Hs/Rm/LG16.4.29 To AJL. from Hs/Rm. Hs/Rm4/LG16.4.29. 'SS' BRAKING. We have condemned Tenoid brake lining. We have also condemned the original type of 'Halo' servo lining. We… | ||
| 05-page094 | Programme to modify 'SS' braking systems. | ||
| View original record | 47420 To AJL. from Hs/Rn. Hs/Rn4/LG16.4.29. 'SS' BRAKING. Attached is a copy of instructions to RHC. re. the SS. brakes. Our programme is to gradually supercede all the Tenoid with Ferodo bonded… | ||
| 05-page095 | Internal instruction to order two complete sets of front and rear brake liners made from Ferodo bonded asbestos. | ||
| View original record | ROY/Ms. from Hs/Rn. X7420 X719 Hs/Aml/LG17.4.29. In addition to the brake linings for the S.S., which we have already received in Ferobestos and Ferodo bonded asbestos, will you please order 2… | ||
| 05-page096 | Confirming instructions to fit car 21-EX with specific brake leverage and servo cams. | ||
| View original record | X7420 To RHC. from Hs/Rm2/LG18.4.29. X7370 This is to confirm that you will fit up 21-EX car with the original W.W. leverage from the brake pedal to the servo i.e., lever F.76811 to be 1.375" long… | ||
| 05-page097 | Why the cross steering tube fouls the dampers under maximum braking. | ||
| View original record | To De. From Hs/Rm. C. to EY. 47420 Hs/Rn2/T19.4.29. RE CROSS STEERING TUBE. 47425 With reference to your Da4/M17.4.29, without brake application there is no doubt that the cross steering tube would… | ||
| 05-page098 | Urgent request to order 4 pairs of woven cotton friction discs from 'The Halo people'. | ||
| View original record | Roy/Ms. from Hs/Rn. X7420 X4388 Hs/Rn3/LG19.4.29. Will you please order 4 pairs of woven cotton friction discs to G.76792 from The Halo people, similar to those which they have previously supplied. We… | ||
| 05-page099 | Outlining the history of continuous tests and modifications to the 'SS' braking system. | ||
| View original record | To R. from Hs/Rm. X7470 Hs/RM/LG19.4.29. c. to Eg. Wor. c. to R. DA. c. to BY. 'SS' BRAKES. X7370 We have been making continuous tests with the braking system on S.S. cars and consider it is desirable… | ||
| 05-page100 | Investigation into brake sponginess and squeaking, focusing on servo performance and lining efficiency. | ||
| View original record | contd :- -2- a persisting feeling of sponginess. (3) The front brakes appeared to be doing far too much work as they started to squeak on all cars. (a) Investigation of (1) shewed it to be due to the… | ||
| 05-page101 | Tests conducted on brake linkage efficiency and proposed improvements. | ||
| View original record | contd :- -3- (c) We carried out tests to establish the efficiency of the linkage. We attach a chart shewing the results obtained. The torque at the camshaft was measured by a lever fitting over the… | ||
| 05-page102 | Development work for a braking system, including improvements to the rear brake equalising shaft and servo lining selection. | ||
| View original record | contd :- -4- Improving the rear brake equalising shaft has also improved (2). (3) To overcome (3) we are reverting to the original direct rear braking and may find it necessary to reduce the leverage… | ||
| 05-page103 | Design and potential issues of side-by-side rear brakes for the 'Phantom' chassis. | ||
| View original record | X.7360 PN.3/WT19.4.29. S/W. Hs...from PN. SS. Chassis. Brakes. I understand that you are proposing side-by-side brakes on the rear wheels, and that these also are being produced for "Phantom" at the… | ||
| 05-page104 | Correcting a typo in a previous communication and inquiring about brake squeak in a modified arrangement. | ||
| View original record | X7420 PN.4/WT22.4.29. S/W. Hs....from PN. Copy to H. In my PN3/WT19.4.27 please note that the word "deterioration" - 5th line from the end was written in error for "Deformation". I intended also… | ||
| 05-page105 | The preparation and manufacture of various brake system components for testing. | ||
| View original record | To RHC. from Hs/Rm. Hs/Rm4/LG24. 4. 29. (1) Will you please prepare to send out to GWH. one complete set of Ferobestos brake linings, preferably mounted on the brake straps. Also one pedal… | ||
| 05-page106 | Instructions for testing modifications to a vehicle's braking system, including longer levers and new linings. | ||
| View original record | GWH. from Hs/Rm. 7420 +7941 Hs/Rm7/LG25. 4. 29. BRAKES. We understand from Brazier that you like your brakes with the lubricated servo even without reduced front braking. (1) We want you to try… | ||
| 05-page107 | Tests for dry servo linings, brake cams, and comparisons of steering systems. | ||
| View original record | -2- 1.375" G76811 The reason we want you to try this with the dry servo lining is because it is the original WW. scheme and R. will want us to adhere to it if possible. (3) We anticipate that too much… | ||
| 05-page108 | Instructions for testing pivot lean, toe-in, and damper loads on a new axle. | ||
| View original record | contd :- -3- We should like you to go over the pivot lean from say 1° to 4°, trying every intermediate degree to establish the best setting. We ought also to try varying the toe-in on this new axle to… | ||
| 05-page109 | Recurring complaints of squeaking brakes and an engine oil leak on car 'SS' - 22-EX. | ||
| View original record | X7420 To Hs. from Sg. re "SS" - 22-EX. Sg8/E1.5.29 Would you please let me know how we stand in regard to the complaints about brakes? You will remember that this was one of the original complaints on… | ||
| 05-page110 | Remedies for squeaking, oil leaks, and starter motor failures on experimental cars. | ||
| View original record | x7420 To Sg. from Hs. Hs3/LG5.5.29. S.S. 22-EX CAR. X7655-B. x7420 Replying to Sg8/El.5.29. We have sent new parts out to 22-EX car which we expect will overcome the squeaking. 21-EX car which is… | ||
| 05-page111 | Order for sets of non-impregnated wire brake linings and additional pieces. | ||
| View original record | x7420 x719 To ROY. from Hs/Rn. Hs/Rm4/LG10.5.29. Will you please order 4 more sets of SS. Brake Linings in Ferobestos non-impregnated wire Front to G.77082 - 8 off per set. Rear to G.77083 - 16 " " "… | ||
| 05-page112 | Agreed brake arrangement for S.S. cars, with a diagram of lever dimensions. | ||
| View original record | To RHC. from Hs/Rm. X7420 Hs/Rm2/LG10.5.29. S.S. BRAKES. X7420 X719 The following is the agreed brake arrangement for all S.S. cars. 21-EX is at present so equipped. 45º cams. Woven cotton A. discs.… | ||
| 05-page113 | Retention of experimental levers and cams for the S.S. braking system. | ||
| View original record | To RHC. from Hs/Rm. X7420 (crossed out) Hs/Rml/LG16.5.29. X7096 We have a number of levers and cams for the S.S. Braking system that have been tried on various experiments. Now we have for the time… | ||
| 05-page114 | Final S.S. brake layout for a production chassis, including a dimensioned sketch and specifications for lining materials. | ||
| View original record | X7420 To BY. from HS/Rm. C. to DA. S.S. BRAKE LAYOUT. Halo cotton A. woven linings. 45° CAMS [Diagram with labels: 1.375, 1.375, 2.188, 2.188] We have now got to the stage where we have sufficiently… | ||
| 05-page115 | Altering car leverage to prevent squeaking front brakes and improve consistency. | ||
| View original record | To BY. from Hs/Rm. X7420 Hs/Rm3/LG17.5.29. X7370 Further to BY22/G16.5.29. and our conversation on the subject. We want to confirm that it is very desirable to get the altered leverage on the cars… | ||
| 05-page116 | Cause of squeaking front brakes and proposing a test for new flanged brake drums. | ||
| View original record | X7420 To B.Y. From Hs/Rn. Hs/RnS/LG28.5.29. SQUEAKING FRONT BRAKES. X7420 You are aware of the trouble which we ran into as soon as we increased the braking on the SS. Although we still have much less… | ||
| 05-page117 | Improvements to S.S. Brakes and Servo action using a woven cotton disc lining. | ||
| View original record | To R. from Hs/Rm. c. to SG. Wor. c. to E. DA. c. to BY. 47420 Hs/Rm3/LG29.5.29. S.S. BRAKES AND SERVO. 47370 With reference to OY/4.6.29. In our experience inconsistent servo action has been mainly… | ||
| 05-page118 | Analysis of brake lining materials and alternative brake cam configurations to reduce wear and squeaks. | ||
| View original record | contd :- -2- Tests we have been carrying out during the past year rather confirm OY's remarks that hard linings with tremendous wearing qualities give poor life in the long run due to scored drums and… | ||
| 05-page119 | Issues with squeaking brakes, comparing Johns-Manville and Ferobestos linings, and referencing tests on a Phantom. | ||
| View original record | contd :- -3- proportionally greater than that of the rear brakes for the work they do. Squeaking brakes are certainly a very considerable problem and are in evidence whenever we try and increase the… | ||
| 05-page120 | Test report on lubricated cotton duck linings for the 'SS' servo. | ||
| View original record | COPY. To Hs/Rm. from Hs/GWH. 29.5.29. RE. LUBRICATED COTTON DUCK LININGS FOR 'SS' SERVO. We carried out tests during the 10,000 miles in France with the cotton duck servo linings lubricated. We found… | ||
| 05-page121 | Arranging for investigation and a standard Phantom front axle changeover on the 21-EX car in France. | ||
| View original record | To Ps. at Sevres. From Hs/Rm. x7420- Hs/Rml/LG29.6.29. x7940b We have asked Hancock to do some investigation work on 21-EX car which is at present at Grenoble. While he is not running mileage, we do… | ||
| 05-page122 | Letter detailing an investigation into a clanking noise produced by servo-operated brakes upon release. | ||
| View original record | OY-10 Mr. A. F. Sidgreaves, Rolls Royce Ltd., London, England. cc - Mr. Bailey Mr. Hives July 12th, 1929. Dear Mr. Sidgreaves: BRAKES Clank on release. (1) As you are no doubt aware one of the… | ||
| 05-page123 | Brake system adjustments, testing of Tee lever offsets, and suggestions for redesign. | ||
| View original record | (3) Since this time (the Fall of 1927) we have succeeded pretty well in keeping clank out of the mechanism by keeping the front brakes set up fairly close and the rear brakes fairly slack (i.e. not… | ||
| 05-page124 | Supplementary note discussing issues and improvements for a servo-brake mechanism, particularly regarding noise and action upon release. | ||
| View original record | OY. It appears necessary to supplement the above by the following:- (1) What has been said above (namely that for quiet brake release the front stop must close before the rear stop and that this… | ||
| 05-page125 | Blueprint drawing of a Servo Crank, including two proposals for its operation. | ||
| View original record | ROLLS-ROYCE OF AMERICA, INC. N.E.S.P.P. CO. Drawn by Traced by Checked by Approved by Model: 6180 Sec: G4 Date: JULY 15/29 Weight: Title: SERVO CRANK Scale: Heat Treat: Brinell: Stanton: Material… | ||
| 05-page126 | Extract concerning an issue with groaning brakes on the S.S. chassis, a noise also found on experimental cars. | ||
| View original record | EXTRACT FROM :- Hs. c. to By. X7420 Mx5/OG8. 8. 29. RE. S. S. CHASSIS. ---------------- 7. BRAKES GROANING. This seems to vary according to atmospheric conditions, and appears to come from the front… | ||
| 05-page127 | Urgent request for two custom-made brake drum rings to address an epidemic of brake squeaks. | ||
| View original record | To RIC. from Hs/Rn. Hs/Rn.2/MJ.16.8.29. Will you please make us two Brake Drum Rings to the attached drawing. As the outside limit of the Drum is so great, this will have to be made to suit each Brake… | ||
| 05-page128 | Complaints and potential cures for a clanking noise in the brake mechanism upon pedal release. | ||
| View original record | R. from HS/Ru. c. SG. c. W.T. S. c. Da. Dv. OY. X.7420 HS/AMB/ADS.10.29. X7420 X7370 X5420 X5370 CLANKING OF BRAKE MECHANISM. We regularly get complaints about the clank which occurs in the brake… | ||
| 05-page129 | Solutions for brake system issues, including fitting a stop to the equaliser shaft and using pads to reduce noise. | ||
| View original record | -2- that if we fit a stop to the front equaliser shaft, the trouble which at present occurs when the swinging and friction increased temporarily, is overcome. The stop itself requires cushioning with… | ||
| 05-page130 | Test report on a buffer stop applied to a servo balance lever to prevent clanking. | ||
| View original record | TESTS CARRIED OUT WITH BUFFER STOP APPLIED TO SERVO BALANCE LEVER TO SKETCH R.1966. This stop was designed to prevent the clanking of the servo levers when released. The first test proved that to use… | ||
| 05-page131 | Description of a damper's function within the brake mechanism. | ||
| View original record | -2- This acts as a damper to all the leverages except the rear brake levers, and is not upset by any wear taking place in the brake mechanism. It not only quietens the clanking of the servo, but damps… | ||
| 05-page132 | Blueprint for a 20 HP front brake equalizing stop. | ||
| View original record | 20 H.P. FRONT BRAKE EQUALIZING STOP., WELDED, PLAN, FERODO BUFFER, .201 DIA HOLES, 1.312 CRS, 0.312 RAD., 2.105, 21°, .250, .175, .625, .750 DIA, .925 CRS, .925 CRS, 14 S.W.G, .080, .312, 8 - OCT -… | ||
| 05-page133 | Blueprint of the front brake equalizer stop for a 20 HP model. | ||
| View original record | FRONT BRAKE EQUALIZER STOP 20 HP | ||
| 05-page134 | The clanking of the brake mechanism, referencing an attached print. | ||
| View original record | To R. from Hs/Ba. X 7420. C. Sg. C. Ds. C. Hy. Cy. Hs/Ba/AD.5.10.29. X7420 X7370 X5420 X5370. CLANKING OF BRAKE MECHANISM. Please find attached print mentioned in paragraph two line two of… | ||
| 05-page135 | Study of a 'servo clank' issue in a braking linkage, comparing standard, experimental, and proposed designs. | ||
| View original record | SERVO CLANK. S.K. 346. I STANDARD NORMAL MOVEMENT TO APPLY REAR BRAKES IS SLIGHTLY LESS THAN MOVEMENT TO APPLY FRONT I.E. CENTRE OF ROTATION OF T LEVER IS AT POINT A. CLANK OCCURS BY SETTING UP FRONT… | ||
| 05-page136 | Technical memo about issues with the Phantom II braking system, pedal movement, and servo gear clearances. | ||
| View original record | Hs. c. By. c. Da. c. Wcr. c. Mx. x7420. EP5/H24.10.29. X. 7360 X7370 X. 7420 X7782 Re. PHANTOM II BRAKES. We find even on a new chassis or complete car, and although the brake clearances be set… | ||
| 05-page137 | Outlining settings for buffer springs and servo brake systems on experimental cars. | ||
| View original record | -2- EP5/H24.10.29. After going into the matter with Experimental cars, and our own experience, we are working to the following:- Buffer springs set to give movement of .030" Servo Brake clearance.… | ||
| 05-page138 | Brake clearance issues and recommendations for the Phantom II model. | ||
| View original record | Hs. c. BY. c. Da. c. Wor. c. Mx. re. PHANTOM II. BRAKES. We find even on a new chassis or complete car, and although the brake clearances be set normally correct, that if the brakes are used fairly… | ||
| 05-page139 | Specifications for buffer springs, servo brake clearance, and pedal/lever movement. | ||
| View original record | - 2 - EP5/H24.10.29. After going into the matter with Experimental cars, and our own experience, we are working to the following:- Buffer springs set to give movement of .030" Servo Brake clearance… | ||
| 05-page140 | Brake pedal feel, leverage ratios, and clearance issues on the Phantom II. | ||
| View original record | Hs/From Da. c. to By. EP. x7420 Da.1/30.10.29. X.7420 X.7350 PHANTOM 11 BRAKES. With reference to EP5/24.10.29., the phenomenon of the pedal coming down on to the boards had we thought been improved,… | ||
| 05-page141 | Issues and proposed adjustments for the Phantom II braking system. | ||
| View original record | x7360 To EP. from Hs/Rm. c. By. c. Da. c. Wor. c. MX. HS/Rm5/AD5.11.29. PHANTOM II. BRAKES. With reference to your EP5/H24.10.29. (1) Rear Brake actuating lever and movement. We cannot understand the… | ||
| 05-page142 | Reduction in pedal travel for the Phantom I and a warning to coachbuilders. | ||
| View original record | Hs/Rm5/AD5.11.29. contd. -2- One other point which is worth noticing is that we have lost .25" pedal travel. On F.746 the Phantom I pedal travel is shown as 4.5", on N.scheme 2671 pedal travel is… | ||
| 05-page143 | Graph showing rear brake lever movement due to road spring deflection. | ||
| View original record | DISTANCE OF BRAKE LEVER FROM AXLE. D" S.S. REAR BRAKE LEVER MOVEMENT DUE TO ROAD SPRING DEFLECTION - 23 EX - BUFFER CLEARANCE TO CONVERT DISTANCES D" MEASURED AT 'P' TO DISTANCES MEASURED AT 'Q'… | ||
| 05-page144 | Technical analysis of issues with the Phantom II braking system, specifically regarding pedal travel loss due to heat. | ||
| View original record | X 7420 To A. from Hs/an. c. SG. c. Wor. H. c. Da. EV. Hs/Ra2/ADS.11.23. PHANTOM II. BRAKES. One or two points have been raised from time to time with regard to the R.S. brakes which we think merit… | ||
| 05-page145 | Recommendation to alter the direct braking leverage to reduce pedal travel by 25%. | ||
| View original record | He/Bu2/A2S.11.29 contd. -2- It is therefore apparent that for touring work in hilly country an owner would be justified in considering that his brakes required adjustment when he had worn only .010… | ||
| 05-page146 | Analysis of brake adjustment and wear, discussing issues on the Phantom II and the adoption of new linings. | ||
| View original record | Hs/RM2/ADS.11.29 contd. -3- actually 22-KX ran a 10,000 miles test with this reduced direct brasing and the cam angle altered to restore the total units. (2) The adjustment provided is too coarse and… | ||
| 05-page147 | Report discussing brake wear, toggle adjustments, and comparing brake lining areas between the 20 HP and Phantom models. | ||
| View original record | -4- thrown away on the side by side rear axle is .207. This corresponds roughly with the theoretical 5 notches wear at the shoe centre equalling .093". [Diagram of a T-shaped brake part with… | ||
| 05-page148 | Recommendations for brake liner thickness and area on future car models. | ||
| View original record | Hs/SM2/ADS.11.21 contd. -5- should be used as previously outlined. Future Cars. That the rear foot brake area should be twice that of the hand brake as on the 20 HP. That all liners should be made… | ||
| 05-page149 | Remedy for front wheel brake squeaks on the Phantom model. | ||
| View original record | X7420 PN.10/WT7.11.29. S/W. Hs....from PN. [Struck through: Copy to Sg.] [Struck through: H.] [Struck through: HP.] Apparently cases of front wheel brake squeaks on the Phantom are being remedied by… | ||
| 05-page150 | Clarifying the rear brake adjustment value for the Phantom II model. | ||
| View original record | X.7260 To Da. from Hs/Rn. c. Bx. c. MX. c. EP. Hs/RnB/AD7.11.29. REAR BRAKE ADJUSTMENT. We gave the value of one notch adjustment on Phantom II as .019 at the shoe centre. This is the front brake… | ||
| 05-page151 | Arrangements for brake squeaks on Phantom II cars. | ||
| View original record | X7420. [Struck through text] [Struck through text] c. Hs. [Struck through text] EP6/HS.11.29. re. Brake Squeaks. Phantom II With reference to your memo. PN.10/WT.7.11.29. arrangements have already… | ||
| 05-page152 | Investigation into the cause of front brake squeaks, identified as false bedding of the brake shoes. | ||
| View original record | To BY, from Hs/GWH. c. Mx. c. EP. c. Wor. c. Sft. X7420 Hs/GWH/MS9.11.29. Front Brake Squeaks. The Test Dept: complaint of front brakes squeaking has been investigated, and we find the cause to be due… | ||
| 05-page153 | Causes and solutions for a clanking brake mechanism on release, and the related issue of sponginess. | ||
| View original record | HS. FROM R. 87360 R5/M12.11.29. C. to SG. WOR. BY. CLANKING OF BRAKE MECHANISM ON RELEASE. X.7360 X.5380 Referring to HS/RM5/AD31029., Mr Hardy says that as far as he can make out the clanking… | ||
| 05-page154 | Suggestions for modifying a lever system, including using a spring or inverted dashpot and rubber stops. | ||
| View original record | -2- want of clearance. (2) Spring to reduce vigour of falling weight, etc, of lever or dashpot for same. The dashpot is the same as yours, but inverted vertically, thus - (3) Rubber faced stops placed… | ||
| 05-page155 | Recommended brake leverages, cam angles, and proposals for a 10,000-mile test. | ||
| View original record | X 7360 To R. From Hs/Rn. c. Sg. c. Wor. E. c. Ds. EV. Hs/Rn3/ADL2.11.29. BRAKE LEVERAGES. ----------------- The brake leverage that we recommend is 1.72 S 35º Cams The direct braking without the servo… | ||
| 05-page156 | Bringing reduced direct braking into production, noting the Test Department's work on shoe clearance. | ||
| View original record | Hs/amB/ADL3.11.29 contd. -2- We should like to bring the reduced direct braking on production as soon as possible, though the Test Dept. are happier now that they are working to the minimum initial… | ||
| 05-page157 | Causes and testing of front brake squeaks. | ||
| View original record | Front Brake Squeaks. In answer to memo HS/GWH/MS9.11.29 we have since examined several front axles, and without question on both the trailing and wrapping shoes the bedding was good; such bedding… | ||
| 05-page158 | Proposed modifications to the Phantom II braking system levers. | ||
| View original record | Hs. ) FROM Da. By. ) X7360 Dal/M18.11.29. PHANTOM II. BRAKES. X.7360 X.7420 With reference to the proposal to reduce the direct braking by some 25% by means of increasing the driver lever on the… | ||
| 05-page159 | Proposed modifications to the Phantom II brakes linkage system. | ||
| View original record | X7420 Hs. } FROM Da. By. } Dal/M18.11.29. PHANTOM II. BRAKES. X. 7360 X. 7420 With reference to the proposal to reduce the direct braking by some 25% by means of increasing the driver lever on the… | ||
| 05-page160 | Clearance issues and proposed modifications for the Phantom II brakes. | ||
| View original record | DA. C. Hs. x7+20. BY3/G. 21.11.29. X. 7360 X. 7420 PHANTOM 11 BRAKES. Referring to Dal/M18.11.29. we cannot agree that the clearance we have shown between the coupling rod and the cross member is… | ||
| 05-page161 | Letter discussing clearances on Phantom 11 brakes and chasing a reply on rear brake modifications. | ||
| View original record | DA. c.Hs. X7360 BY3/G.21.11.29. PHANTOM 11 BRAKES. X7360 X7420 RECEIVED NOV 21 1929 Referring to DA1/M18.11.29. we cannot agree that the clearance we have shown between the coupling rod and the cross… | ||
| 05-page162 | Modifications to the Phantom II brake system, specifically regarding lever lengths and cam angles. | ||
| View original record | x7360 To Da. From Hs/Rn. c. to By. HS/Rn.2/AD23.11.29. PHANTOM 11 BRAKES. X.7360 X.7420 With reference to Dal/M18.11.29. As By. points out, we cannot shorten the lever you suggest, as if we do the rod… | ||
| 05-page163 | Modifications to the Phantom II brake system, specifically concerning levers and cams. | ||
| View original record | To Da. From Hs/Rm. c. to By. x7420 (handwritten) Hs/Rm.2/AD23.11.29. PHANTOM II BRAKES. X.7360 X.7420 With reference to Dal/M18.11.29. As By. points out, we cannot shorten the lever you suggest, as if… | ||
| 05-page164 | Brief memo regarding a suggestion about Phantom II brakes. | ||
| View original record | X7420 Hs/Rm. from Da. Da3/M25.11.29. X.7360 X.7420 PHANTOM II BRAKES. We thank you for your Hs/Rm2/AD23.11.29. Our letter was by way of a suggestion largely to obtain information. In view of what you… | ||
| 05-page165 | Short memo regarding a suggestion about Phantom II brakes. | ||
| View original record | X7360 Hs/Rm. from Da. Da3/M25.11.29. X.7360 X.7420 PHANTOM II BRAKES. We thank you for your Hs/Rm2/AD23.11.29. Our letter was by way of a suggestion largely to obtain information. In view of what you… | ||
| 05-page166 | Specifying the maximum weight for the toggle lever during the bedding of front brake shoes. | ||
| View original record | filing x7420. To SPT. From GWH. c.c. to HS. GWH.1/27.11.29. RE BEDDING OF FRONT BRAKE SHOES. ------------------------------ The weight at the end of the toggle lever should not exceed 6 lbs. for… | ||
| 05-page167 | Confirming the handover of N. scheme 2988, a damper for the Phantom II brake gear, for experimental purposes. | ||
| View original record | BY. FROM DA. Copy to - SG. Copy to - HS. X1560 DAL/M29.11.29. PHANTOM 2. - BRAKE OPERATING GEAR. This is to confirm having handed to you yesterday N. scheme 2988. - Damper for the Swinging Arm of the… | ||
| 05-page168 | Two alternative proposals for wider rear foot brake shoes on the Phantom II rear axle. | ||
| View original record | X7360 By. from Da. c. Sg. Hs. Da2/M29.11.29. PHANTOM II REAR BRAKES X.7360 X.7930 This is to confirm having handed to you yesterday N. Scheme 2989. shewing the wider rear foot brake shoes on P.2. rear… | ||
| 05-page169 | Clarifying the method for curing brake squeaks on the Phantom II. | ||
| View original record | X7420. To Bv. From Hs/Rn. Hs/Rn.4/MJ.3.12.29. PHANTOM 11 BRAKE SQUEAKS. --------------------- We regret that we have not been very clear upon the method we have adopted for curing these squeaks. We… | ||
| 05-page170 | Standardisation of chassis parts relating to an alteration to the rear brake leverages. | ||
| View original record | RR 755 REVISED (10M) (DF 687 4-1-29) BM. 2/5943. X7360. COMPLETED 18.12.29. STANDARDISATION of CHASSIS PARTS. Date 11.11.29 Description of Parts. Alteration to rear brake leverages. Origin. To reduce… | ||
| 05-page171 | Effectiveness and pedal pressure of the vehicle's servo-assisted braking system. | ||
| View original record | STANDARDISATION of CHASSIS PARTS I understand, this is less leverage to rear brakes from pedal, is less direct braking and more servo. I rather doubt if more servo is wise, one often thinks our brakes… | ||
| 05-page172 | Standardisation report for a front brake drum damper to reduce squeaking brakes. | ||
| View original record | RR 755 REVISED (10H) (OF 687 4-1-29) BM. 2/5943. X7420 COMPLETED 23.12.29. STANDARDISATION of CHASSIS PARTS. Date 28.9.29. Description of Parts. FRONT BRAKE DRUM DAMPER. Origin. To reduce squeaking… | ||
| 05-page173 | Comparison of foot brake leverage data between the Phantom 1 and Phantom 11 models. | ||
| View original record | x7360 Hs/Rm.30.12.29. T x7360 x7420 x7930 PHANTOM 11 LEVERAGES JAN.1930. VARIOUS FOOT BRAKE LEVERAGES. Total Pedal Movement D Steering. Phantom 1 4.5" Phantom 11 4.25" Value of .010 Shoe Clearance in… | ||
| 05-page174 | Hand-drawn diagram with notes specifying a cam profile for Right Hand (R.H.) drive cars. | ||
| View original record | This is for R.H. Cars L.H. Cars have no brake countershaft in consequence have a different cam. 1.786 G77414 35° CAM. G77583 | ||
| 05-page175 | Comparison of foot brake leverage data and pedal travel loss between the Phantom I and Phantom II models. | ||
| View original record | x7430 Hs/Rm.30.12.29. T x7560 x420 x7950 PHANTOM II LEVERAGES JAN.1930. VARIOUS FOOT BRAKE LEVERAGES. Total Pedal Movement D Steering. Phantom 1 4.5" Phantom II 4.25". Value of .010 Shoe Clearance in… | ||
| 05-page176 | Hand-drawn diagram illustrating a component profile with annotations. | ||
| View original record | 35° CAM. 1.725 | ||
| 05-page177 | Change to moulded asbestos brake linings on the Phantom II and subsequent brake leverage modifications. | ||
| View original record | To Hn. From Hs/Rn. For Depot Sheet. X7420 Hs/Rn.4/MJ.2.1.30. BRAKES - PHANTOM II. X7360 X7420 X7370 X8409 In order to reduce the troubles of squeaking brakes we have standardised a moulded asbestos… | ||
| 05-page178 | Technical bulletin regarding a change to moulded asbestos brake lining on the Phantom II to reduce squeaking. | ||
| View original record | X7360 To Hm. From Hs/Rn. For Depot Sheet. HS/Rn.4/MJ.2.1.30. BRAKES - PHANTOM II. In order to reduce the troubles of squeaking brakes we have standardised a moulded asbestos brake lining instead of… | ||
| 05-page179 | Letter from the American office to Derby regarding a new apparatus for 'shaving' brake liners and requesting a price quotation. | ||
| View original record | ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. X7360 OY-4 Jan 6, 1930. Mr. E.W. Hives, Rolls Royce, Ltd., Derby, England. Cc- Mr. Ross Mr. Burton Mr. Soutter Mr. Ainsworth Mr. Southern (England) Dear… | ||
| 05-page180 | Specifications, dimensions, and weights of various plates. | ||
| View original record | 39 PORTER 5-Plate 1.76 Thicknes .36 Main Plate .35 Other three 35" 9 15 3/4 wt 36 lbs 1.99 6 Plates .34 Main .33 37 1/4 lbs 29 1/8 .14. ROLLS-ROYCE | ||
| 05-page181 | Recommendation to change the rear foot brake lining material on the Phantom II due to rapid wear. | ||
| View original record | To BY. From Hs/Rn. C. to Da. PHANTOM II REAR FOOT BRAKE. In spite of the reduced direct braking leverage, we are finding that the total travel on the Phantom II increases too rapidly when Ferobestos… | ||
| 05-page182 | Proposal to increase the thickness of the Ferodo rear brake shoe lining for the 20 HP 10,000-mile test car. | ||
| View original record | BY. From Da. c. to Hs. X7 360 Da.2/MJ. 6.2.30. x5480 x7360 x5360 20 HP. for 10,000 Mile Test. REAR BRAKE SHOE LININGS. We wish to increase the thickness of the Ferodo lining on the rear brake shoes… | ||
| 05-page183 | Sir Henry Segrave's complaint regarding the rapid wear of Phantom II front brake drums compared to those on his Hispano. | ||
| View original record | S/W. Hs....from PN. x7420. PN.3/WT6.2.30. "Phantom II". Sir Henry Segrave insists upon it that our front brake drums have a surface only of about one-third that of the brake-drums on the Hispano,… | ||
| 05-page184 | Recommendation regarding the rear foot brake lining material for the Phantom II due to excessive travel when using Ferobestos. | ||
| View original record | To EY. From Hs/Rm. c. to Da. x7420 Hs/Rm.4/J.6.2.30. x7570 x7360 x7470 PHANTOM II REAR FOOT BRAKE. In spite of the reduced direct braking leverage, we are finding that the total travel on the Phantom… | ||
| 05-page185 | Recommendation to thicken the front brake shoe linings for the Phantom II and 25 HP models. | ||
| View original record | To BY. From Da. c. to Hs. x7360 Da.1/MJ.7.2.30. x5360 x7360 With further reference to our Da.2/MJ.5.2.30. We think an early opportunity should be taken of thickening the front brake shoe linings of… | ||
| 05-page186 | Second report from the Design Committee detailing modifications for the 25 HP model. | ||
| View original record | R.(Held up). Sg. Wor. E. By. Hs. x7360 Rg.1/LW.7.2.30. X.2924 X.5770 X.5005 X.5840 X.7360 SECOND REPORT OF DESIGN COMMITTEE. 25 H.P. MODIFICATIONS. The rubber mounting rear engine feet design was… | ||
| 05-page187 | Modification to the Phantom II's brake leverage and servo cams, recommended for retrospective fitting. | ||
| View original record | -2- Rz.1/LW.7.2.30. BRAKES. A modification was made on Phantom ll's altering the direct action leverage between the foot pedal and the rear brake shoes, and at the same time the angle of the Servo… | ||
| 05-page188 | Issues with the braking system on the Phantom II, where the pedal travel is insufficient for full braking effectiveness, and proposing immediate modifications. | ||
| View original record | [Handwritten top left, crossed out] Hs DV WOF [Handwritten top centre] x7360 [Typed top right] EP6/HS.2.30. [Handwritten top right] +7360 / 7420. re. PHANTOM II. BRAKES. In spite of our now turning… | ||
| 05-page189 | Braking issue on the Phantom II and proposing corrective modifications. | ||
| View original record | Hs. C. BY. Wor. E. x7420. EP6/H8.2.30. X.7360 X.7420 PHANTOM 11 BRAKES. In spite of our now turning out chassis and complete cars in which the brake clearances have been reduced to the minimum… | ||
| 05-page190 | Cost and two different methods for altering the direct leverage braking on S.S. cars. | ||
| View original record | BY. From Hs/Rm. c. to Da. c. to Wor. 87420 Hs/Rm.2/MJ.21.2.30. ALTERING DIRECT LEVERAGE BRAKING K7310 In considering the cost of the change-over for altering the direct braking of S.S. cars, we note… | ||
| 05-page191 | Persistent issue of brake squeaks on the Phantom II chassis. | ||
| View original record | X7420 Hs. c. v. I. S. A. Br. E. EP10/H20.3.30. re. PHANTOM II. BRAKE SQUEAKS. This still continues to be a source of trouble on the above chassis, as demonstrated to you yesterday. The squeak and… | ||
| 05-page192 | Proposed design change to the Phantom II front brake linings to reduce brake squeaks. | ||
| View original record | To BY. From Hs/Rn. c. to Da. MX. 87420 Hs/Rn.2/MJ. 26.3.30. PHANTOM 11 FRONT BRAKES. In the very early days of the front wheel brakes we chamfered the ends of the linings to avoid axle jaggers. This… | ||
| 05-page193 | Suggestion to use rivets with smaller heads for narrow brake shoes to prevent lining breakage. | ||
| View original record | n 7930- BY. From Hs/Rn. Hs/Rn.6/MJ.27.3.30. n 7930 xsg.so. BRAKE SHOE STRAPS. We note upon examining some of the narrowest brake shoes in the works, such as the 20 HP. hand brake, that the rivet heads… | ||
| 05-page194 | Solution for squeaking front brakes on the Phantom II. | ||
| View original record | X7930 RHC. From Hs/Rm. Hs/Rm.S/MJ.27.3.30. PHANTOM 11 FRONT BRAKES. Production are in serious trouble with squeaking brakes on the front of Phantom ll. We want to try some brake shoes having a greater… | ||
| 05-page195 | The causes of brake squeaks and the necessary alterations to fix the issue. | ||
| View original record | Copy for File. x7930 BRAKE SQUEAKS. The principle is to cause the brake shoe to move sideways not more than .010" by the varying pressure on the shoe, and thus causing a disturbance in the bedding.… | ||
| 05-page196 | Cause of squeaks from a spring load shoe and proposing a testing solution before final fitting. | ||
| View original record | -2- to bind on either limit of the guide. If these centres on the carrier plate are too close a similar operation takes place to the spring load shoe. I consider this jig is largely responsible for… | ||
| 05-page197 | Fitting special front brake linings to chassis 24-EX to overcome spring squeaks. | ||
| View original record | X7450 X777 X7420 RHC. From Hs/Rn. Hs/Rn.2/MJ.11.4.30. FRONT BRAKE LININGS - 24 EX.-FIRST LEFT-HAND CHASSIS. We want to try some special brake linings herewith, with the object of overcoming spring… | ||
| 05-page198 | Design and potential trial of an anti-squeaking device for road wheel brakes. | ||
| View original record | X7420 Hs. from E. c. Sg. Hs/GMH. c. By. Hs. Ds. E1/M30.5.30. K.7360 K.5360 K.7930 K.5930 K.7420 RE - ROAD WHEEL BRAKES. ANTI-SQUEAKING DEVICE I have shewn R. the sketch of Mr.Hancock's anti-squeaking… | ||
| 05-page199 | Mr. Hancock's anti-squeaking device for road wheel brakes. | ||
| View original record | X7860 Hs. from E. c. Sg. Hs/GWH. c. By. MB. DB. E1/M30.5.30. X. 7360 X. 5360 X. 7930 X. 5930 X. 7420 RE - ROAD WHEEL BRAKES. ANTI-SQUEAKING DEVICE I have shewn R. the sketch of Mr.Hancock's… | ||
| 05-page200 | Scheme for trying out a suggested device for road wheel brakes. | ||
| View original record | 27360 BY. From Hs/Rn. Hs/Rn.13/MJ.4.6.30. ROAD WHEEL BRAKES. X.7360. X.5360. X.7930. X.5930. X.7420. With reference to E.1/M30.5.30. Will you please give us a scheme for trying out the device… | ||
| 05-page201 | Requesting a scheme for testing a new road wheel brake device. | ||
| View original record | BY. From Hs/Rn. X7420 Hs/Rn.13/W.4.6.30. X7360. X5860 X7930. X5930 X7420. ROAD WHEEL BRAKES. With reference to E.1/M30.5.30. Will you please give us a scheme for trying out the device suggested by R.… | ||
| 05-page202 | Modifications to road wheel brakes to eliminate squeaks and addressing issues with brake area. | ||
| View original record | To E. From Hs/Rn. X7360 Hs/Rn.14/MJ.4.6.30. X. 7360. X. 5360. X. 7930. X. 5930. X. 7420. ROAD WHEEL BRAKES. With reference to E.1/M30.5.30. You will recollect that about 5 years ago we found that if… | ||
| 05-page203 | Methods to eliminate squeaking from road wheel brakes by making the brake shoes flexible. | ||
| View original record | COPY. x7420. To E. From Hs/Rm. Hs/Rm.14/MJ.4.6.30. X.7360. X.5360. X.7930. X.5930. X.7420. ROAD WHEEL BRAKES. With reference to E.1/M30.5.30. You will recollect that about 5 years ago we found that if… | ||
| 05-page204 | Technical memorandum detailing the principles and proposed alterations to prevent brake squeaks. | ||
| View original record | Copy for File. x/420 BRAKE SQUEAKS. X9280 / 4.9.30 The principle is to cause the brake shoe to move sideways not more than .010" by the varying pressure on the shoe, and thus causing a disturbance in… | ||
| 05-page205 | Addendum to a specification regarding the application of putty on coachbuilt bodies. | ||
| View original record | I.T.29/8.5.20 I.T. PUTTYS. ADDITION TO THE SPECIFICATION FOR PAINT, FILLER ETC. IS GIVEN BELOW. THE ADDITION IS FOR PUTTY SUITABLE FOR USE ON TENDER OR COACHBUILT BODIES ONLY, AND IS TO BE INSERTED IN… | ||
| 05-page206 | Persistent issue of squeaky brakes on the Phantom II model and potential solutions. | ||
| View original record | Hs. c.c. EV. c.c. ET. c.c. Wos. X7420 EP7/H3.7.30. re. PHANTOM II. SQUEAKY BRAKES. As discussed with you this morning, the position of the above both with regard to new chassis delivered from the… | ||
| 05-page207 | New locomotive-style pivoted brake shoe design to address brake squeaking issues. | ||
| View original record | X7930. Hs. from R. c. Sg. By. c. Da. BRAKES. R2/M10.7.30. X.7420 X.7930 I understand that brake squeaks are from the front brakes chiefly. We have asked Da. to produce a design of shoe pivoted as a… | ||
| 05-page208 | New locomotive-style pivoted brake shoe design to address brake squeaks. | ||
| View original record | X7420 Hs. from R. c. Sg. By. c. Da. ------- R2/M10.7.30. BRAKES. ------- X.7420 X.7930 I understand that brake squeaks are from the front brakes chiefly. We have asked Da. to produce a design of shoe… | ||
| 05-page209 | New locomotive-type brake for the front axle to address brake squeaking. | ||
| View original record | X7420 By. from Da. c. Sg. Hs. Da2/M16.8.30. X.7420 X.7930. BRAKE SQUEAKING Herewith we send N.sch.3140 shewing the locomotive,type brake for the front axle in accordance with R's suggestion. He… | ||
| 05-page210 | Specifying the use of Ferodo lining for G.W.H. front brake shoes on car 22-EX. | ||
| View original record | To RHC. from Hs/Rn. X7930 Hs/Rn5/MS16.8.30. Will you please fit the G.W.H. Front Brake Shoes on 22-EX. lined with standard material. In this case, we should like standardised material on the Front… | ||
| 05-page211 | Scheme for a locomotive-type brake to address brake squeaking. | ||
| View original record | X7930. By. from Da. c. Sg. Hs. Da2/M16.8.30. X. 7420 X. 7930. BRAKE SQUEAKING Herewith we send N.sch.3140 shewing the locomotive, type brake for the front axle in accordance with R's suggestion. He… | ||
| 05-page212 | Potential cure for front brake squeaks on the Phantom II, proposing to test it on Trials and Inspectors' cars. | ||
| View original record | C. From Hs/Rn. C. to PN. J 7420 Hs/Rn.3/WJ.25.8.30. FRONT BRAKE SQUEAKS. PII As you know, squeaking brakes are one of our most persistent troubles. We have in hand a potential cure. We want to utilise… | ||
| 05-page213 | Proposal to fit front brake shoes with an anti-squeak modification to London Trials cars. | ||
| View original record | RHC. From Hs/Rn. 87420. Hs/Rn.4/MJ.25.8.30. We propose to fit six sets of front brake shoes incorporating G.W.Hancock's anti-squeak modification to London Trials cars. We should be pleased if you… | ||
| 05-page214 | Testing for a cure for front brake squeaks on the Phantom II. | ||
| View original record | x7420 PN.3/WT26.8.30. S/W. Works from PN. Copy to Hs. Oz. Front brake squeaks- Phantom II. Ref. Hs./Rm3/MJ.25.8.30. We are anxious to encourage in every way possible the testing of any "potential"… | ||
| 05-page215 | Arrangements to fit a new anti-brake-squeak device (Hancock type) to trial cars. | ||
| View original record | X7420 COPY. HS X7420 X7960. S/W (Hd) from H. H5/H5.9.30. With reference to the discussion we had at the Conference the other day, as to the latest device (Hancock type) which has been tried for… | ||
| 05-page216 | Correspondence regarding the fitting of an anti-squeak brake device to two Phantom II cars. | ||
| View original record | S/W. Hs...from PN. Copy to Wor. Sg. Cx. DH. PN.1/WT5.9.30. Referring to your proposition to fit to two of our "Phantom II" cars the anti-squeak brake device, I am arranging for 94-GN Trials Sedanca by… | ||
| 05-page217 | Complaint about brake squeaking and referencing a locomotive-type brake solution. | ||
| View original record | H3 X7420. To BY from Sg. To Hs. from Sg. re Brake Squeaking. This seems to be a complaint of a rather definite nature for which there is no known cure. I would refer to DA2/M16.8.30 sending you N.Sch.… | ||
| 05-page218 | Recommendation to increase the adjustment range of the hand brake lever on the left-hand chassis. | ||
| View original record | X7330. To S. Penn Hs. c.c. to Mr. Wor. c.c. to Mr. D. c.c. to Mr. Ry. No. S/W/11.9.30. X7772 X7330 HAND BRAKE ON THE LEFT-HAND CHASSIS. We find that we are rather short of movement on the hand brake… | ||
| 05-page219 | Detail drawings for a locomotive type front axle brake issued to the Experimental Department for testing to resolve squeaking. | ||
| View original record | AJL Please follow up these jobs Sgd C. Hs. x740 BY8/G.17.9.30. RE BRAKE SQUEAKING. With reference to Sg4/E.10.9.30. detail drawings for the locomotive type brake for the front axle have been issued to… | ||
| 05-page220 | Increasing the movement of the hand brake lever on a left-hand chassis. | ||
| View original record | Y330 HS. FROM DA. DA1/M17.9.36. Copy to BY. HAND BRAKE ON L.H. CHASSIS. X.7772 X.7330 With reference to HS3/MJ11930., as we expect you do not want to reduce leverage on the hand brake it will be… | ||
| 05-page221 | Standardisation document for .375' thick front brake liners to increase their lifespan. | ||
| View original record | RR 785 (10M) (3-7-30) BM. 6/2871. COMPLETED 7.10.30. X 7420 STANDARDISATION of CHASSIS PARTS. Date 5.7.30. Description of Parts. FRONT BRAKE LINERS .375" THICK. Origin. To increase the period before… | ||
| 05-page222 | Standardisation of chassis parts relating to wider rear brake shoes. | ||
| View original record | RR 755 REVISED (10H) (DG 348 19-7-29) BM. 6/643. X 930. COMPLETED 5.11.30. STANDARDISATION of CHASSIS PARTS. Date 5.6.30. Description of Parts. REAR BRAKES. WIDER BRAKE SHOES. FOOT BRAKE 2.250". HAND… | ||
| 05-page223 | Standardisation of wider rear brake shoes for chassis parts. | ||
| View original record | RR 785 (10M) (3-7-30) SM. 6/2571. √7360 COMPLETED 5.11.30. STANDARDISATION of CHASSIS PARTS. Date 5.6.30. X No. 7360. Drawing No. LOP. 8278 Parts List CL 367. Description of Parts. REAR BRAKES. WIDER… | ||
| 05-page224 | Experimental alteration to the foot brake design for the 40/50 HP model. | ||
| View original record | C.O.P.Y. Hs/Rm. c. BY/TWD. BY2/G.12.11.30. 40/50 HP. BRAKES. ---------- At the time the design of the foot brake was altered to enable us to use Ferodo .375" thick, you will remember that we pointed… | ||
| 05-page225 | On an experimental alteration to the 40/50 HP foot brake design regarding the locking pin and use of eccentric pins. | ||
| View original record | RECEIVED 1930 NOV 12 Hs/Rm. ~~Or BY/FWD~~ X7360 BY2/G.12.11.30. X7360. X7420. 40/50 HP. BRAKES. At the time the design of the foot brake was altered to enable us to use Ferodo .375" thick, you will… | ||
| 05-page226 | Feedback and safety concerns regarding the eccentric toggle adjustment for rear brakes. | ||
| View original record | X7360. TO BY. From Hs/Rn. Hs/Rn.6/MJ.12.11.30. X7930. Eccentric Toggle Adjustment Rear Brakes. This device has now run a number of miles on 22-EX. From the adjustment point of view, i.e. getting the… | ||
| 05-page227 | Issues with squeaking brakes and steering tube adjustments for car 26-EX. | ||
| View original record | Sevres/W "Hs", "Rm" "PN" Copy to "Sg" x7420. HM15/MLB.26.II.30 x7120. Re: 26-EX- Brakes "PN" will no doubt remember that during the Paris Salon this year the front wheel brake squeaked on this car.… | ||
| 05-page228 | Requesting a car be brought to the Works to examine its steering parts. | ||
| View original record | X 7420. To Sg. From Hg/Rn. c. to PM. c. to Hn. Hs/Rn.2/MJ.29.11.30. 26-EX. X. 7120. X. 7420. With reference to Hmal5/MLB.26.11.30. We think it is absolutely essential that we shall follow up the… | ||
| 05-page229 | Requesting particulars, such as a sketch or description, for anti-squeak front brake shoes fitted to the 25-EX model. | ||
| View original record | HS/RM. FROM DA. x7930 BRAKE SQUEAKS. DA1/M2.12.30. RECEIVED 3 DEC 1930 In HS' memo. dated 29/11/30. re. clutches, he refers to anti-squeak front brake shoes being fitted to 25-EX. We have no definite… | ||
| 05-page230 | 'Non Squeak brakes PII' enquiry and an attached report. | ||
| View original record | HS/Rm W. X7950 EP22 / 4.12.30 Re Non Squeak brakes PII Ref. your enquiry re 20 Oct sent to GN. I attach copy report received PN2/PH 3.12.30 from PN today. Please let me have your comment. It does not… | ||
| 05-page231 | Status of fitting a non-squeaking brake scheme to Phantom II cars. | ||
| View original record | C O P Y PN2/PHS.12.30. Phantom II Brakes - Non Squeaking Scheme Replying to your EP9/T2.12.30 I do not know what has become of the 20 sets of these brakes to which you refer, other than the following.… | ||
| 05-page232 | Proposal for new brake shoes with pivoted ends to prevent squeaks. | ||
| View original record | BY. FROM DA. C. to SG. HS X1930 DA1/M4.12.30. P. 2. BRAKE GEAR. Herewith we send N. sch. 3182. shewing the proposed brake shoes with pivoted ends for the purpose of preventing squeaks. They go on to… | ||
| 05-page233 | Revised form of centre pivoted brake shoe. | ||
| View original record | BY. FROM DA. C. to SG. HS. X/930 P. 2. BRAKES. DA2/M4.12.30 Herewith we send N. sch. 3183. shewing the revised form of centre pivoted brake shoe, which also goes on to the present anchorage, and uses… | ||
| 05-page234 | Covering note sent with a sketch of the anti-squeak brake shoe. | ||
| View original record | x7930. To Da. From Hs/Rm. Hs/Rm.1/MJ.5.12.30. We are sending you herewith a sketch of the Anti-squeak brake shoe, as requested. Hs/Rn. | ||
| 05-page235 | Anti-squeaking measures for Phantom II brakes. | ||
| View original record | To PN. From Hs/Rm. c. to EP. 17950 Hs/Rm.3/MJ.6.12.30. PHANTOM II BRAKES - ANTI SQUEAKING. With reference to PN2/PH3.12.30. We are disappointed that you have not had more Trials cars fitted up with… | ||
| 05-page236 | Fitting of an anti-squeaking device to Phantom II brakes. | ||
| View original record | Hs/Rm. copy MP. X7930 PN.4/PH.8.12.30. Phantom II Brakes - Anti-Squeaking. Your Ref. Hs/Rm/3/MJ.6.12.30. Yes, I agree it is disappointing that the not two Phantom II Trials Cars have/been fitted with… | ||
| 05-page237 | Modifications to brake drums and shoes for 25HP & 45HP cars. | ||
| View original record | SG. HS. } FROM R. R3/M11.12.30. C. to WOR. BY. CAR WORK - 25HP. & 45HP. X.4612. X.7930. X.5930. Handwritten: X7930 BRAKES. There is no doubt that the flexible brake drum was a wrong move, and to… | ||
| 05-page238 | Follow-up memo regarding the issuance of a standardisation sheet for brake squeaks. | ||
| View original record | RECEIVED 16 DEC 1930 S/W X7930. To Hs/Rm from Sg. Copy to Wor. BY. re Brake Squeaks. Sg13/E15.12.30 You will remember that as the result of the approval given to the Hancock scheme in R1/M26.11.30 it… | ||
| 05-page239 | The standardisation sheet for an anti-squeak brake shoe. | ||
| View original record | To Sg. From Hs/Rn. c. to Wor. c. to By. 879 30 Hs/Rn.3/MJ.16.12.30. Re. Brake Squeaks. Replying to Sg.13/E15.12.30. The Standardisation Sheet for the anti-squeak brake shoe has now been completed… | ||
| 05-page240 | 'Hancock scheme' to address brake squeaks on various chassis. | ||
| View original record | x7930. c. Ha/Rm. BY3/G.16.12.30. BRAKE SQUEAKS. Referring to Sg13/E.15.12.30. standardisation sheet is in circulation for the Hancock scheme. We are detailing the scheme exactly as it has been used,… | ||
| 05-page241 | Brake shoe design and comparing brake lining areas against competitor vehicles. | ||
| View original record | To R. from HE/Rm. c. Sg. c. WOr. Da. c. s. Hy. [Handwritten: 7420] He/Rml/AD16.12.30. 40/50 and 25 HP. BRAKES. X.7930. X.5360. X.5930. X.5420. X.7360. X.7420. Since brake shoe design is under… | ||
| 05-page242 | Table detailing the dimensions of servo-operated brakes for various car models. | ||
| View original record | DIMENSIONS OF SERVO OPERATED BRAKES. TABLE COLUMNS: TYPE FRONT BRAKES: Arc of Contact of Each Brake Strap (Length, Angle), Width of Shoe, Dia. of Drum. REAR BRAKES: Arc of Contact of Each Brake Strap… | ||
| 05-page243 | Comparison table detailing the particulars of servo-operated front and rear brakes for various car models. | ||
| View original record | PARTICULARS OF SERVO OPERATED BRAKES. TABLE: | TYPE OF CAR | FRONT BRAKES. | REAR BRAKES. |… | ||
| 05-page244 | Brake shoe design for 40/50 and 25 HP models and comparing brake lining areas with competitor vehicles. | ||
| View original record | To R. from Hs/Rm. c. Sg. c. Wor. Ds. c. E. Ry. X7360. Hs/Rml/AD16.12.30. X. 7930. X. 5360. X. 5930. X. 5420. X. 7360. X. 7420. 40/50 and 25 HP. BRAKES. Since brake shoe design is under consideration,… | ||
| 05-page245 | Specification table detailing the dimensions of servo-operated brakes for different vehicle models. | ||
| View original record | DIMENSIONS OF SERVO OPERATED BRAKES TYPE | FRONT BRAKES | REAR BRAKES --- | ARC OF CONTACT OF EACH BRAKE STRAP | WIDTH OF SHOE | DIA. OF DRUM | ARC OF CONTACT OF EACH BRAKE STRAP | WIDTH OF SHOE |… | ||
| 05-page246 | Table detailing the particulars of servo-operated brakes for various car models. | ||
| View original record | PARTICULARS OF SERVO OPERATED BRAKES. TABLE DATA: | TYPE OF CAR | FRONT BRAKES - TOTAL AREA OF FRICTION SURFACE | FRONT BRAKES - BRAKE AREA PER TON LOAD | FRONT BRAKES - FRICTION MATERIAL | REAR… | ||
| 05-page247 | Issue of brake squeaks and proposing a trial of a new brake shoe. | ||
| View original record | To BY. From Hs/Rn. c. to Sg. c. to Wor. X 7360. Hs/Rn.10/MJ.16.12.30. X.7930. X.7360. BRAKE SQUEAKS. We do not quite agree with the remarks in BY3/G.16.12.30., where it is stated that the rear brake… | ||
| 05-page248 | Internal memorandum discussing brake squeaks and the implementation of the Hancock scheme for chassis being shipped to America. | ||
| View original record | Hs/Rm X7930. RECEIVED 18 DEC 1930 To BY from Sg. re Brake Squeaks. Sg11/E17.12.30 Copy to Mr. Hs/Rm. 18.12.30. I am in receipt of BY3/G.18.12.30 and Hs/Rm.3/MJ. The standardisation sheet has not yet… | ||
| 05-page249 | Specification sheet for the Phantom II (WJ & XJ Series) front and rear brake areas. | ||
| View original record | FOR FILES. x7360. Dec.1930. x7420. PHANTOM II. BRAKE AREAS WJ. XJ. SERIES. REAR FOOT BRAKES. Drum dia. 15.38" Arc of Contact, 1 liner 54.0º Total area of Ferodo per side of car. (15.38 x II x 54 x 4 x… | ||
| 05-page250 | Proposed 4-shoe brake adapted for the front brakes on the Phantom II. | ||
| View original record | R. FROM DA. Copy to SG. " BY. " HS X7930 DA3/M24.12.30. X.7420. X.7930. BRAKES. Attached is a print of N. scheme 3188., (original to BY.) shewing the proposed 4 shoe brake adapted to the front brakes… | ||
| 05-page251 | Instructions for setting non-squeak brake shoes. | ||
| View original record | To By. From Hs/GWH. X7930. Hs/GWH.2/KT.6.1.31. X.7930. X.5930. I have been asked to give instructions re the setting of the non squeak brake shoes. The brake shoes should be bedded in without any… | ||
| 05-page252 | Specifications for the brake areas of the Phantom II, WJ. XJ. series. | ||
| View original record | FOR FILES. PHANTOM II. BRAKE AREAS WJ. XJ. SERIES. REAR FOOT BRAKES. Drum dia. 15.38". Arc of Contact, 1 liner 54.0º. Total area of Ferodo per side of car. (15.38 x pi x 54 x 4 x 1.75) / 360. = 51.… | ||
| 05-page253 | Examination of high-pitched squeaks from locomotive front brakes and suggested remedies. | ||
| View original record | Copy for files. X7930. 19-EX. Locomotives Front Brakes to N. sch. 3140. Shoes Spring Loaded from the top 50 lbs. Both brakes gave a high pitch squeak, but no groans. The bedding was examined and found… | ||
| 05-page254 | Communication regarding a potential cure for groaning rear brakes by adjusting the shoe fulcrum pin. | ||
| View original record | x 7360. R.R. Cricklewood. Hs/Rm.2/MJ.26.1.31. GROANING REAR BRAKES. X.5360. X.7360. We have found that in certain cases we have been able to cure groaning rear brakes by nothing more than taking up… | ||
| 05-page255 | Examination of squeaking locomotive front brakes and a proposed solution involving spring loading. | ||
| View original record | Copy for files. x74-0. 21.1.31. x79301 19-EX. Locomotives Front brakes to N. sch. 3140. Shoes Spring Loaded from the top 50 lbs. Both brakes gave a high pitch squeak, but no groans. The bedding was… | ||
| 05-page256 | Metallic noise from brake stops on the Phantom and 25 HP models, suggesting the reapplication of a previously used rubber buffer. | ||
| View original record | To. By. From Hs/GWH. c. to Hs. X7360 Hs/GWH.1/KT.27.2.31. RE NOISE FROM BRAKE STOPS. X5360 We have both on the Phantom and 25 HP. a metallic noise when the foot brakes are released by the levers… | ||
| 05-page257 | Standardisation document for an anti-squeaking front axle brake shoe. | ||
| View original record | RR 755 (10H) (3-7-30) 5M. G/2571. X7930. COMPLETED 6.3.31. STANDARDISATION of CHASSIS PARTS. Description of Parts. ANTI-SQUEAKING BRAKE SHOE. FRONT AXLE. Origin. To reduce complaints. Experimental… | ||
| 05-page258 | Standardisation of an anti-squeaking brake shoe for the front axle to reduce complaints. | ||
| View original record | RR 785 (10M) (3-7-30) BM. 6/2571. X7420. COMPLETED 6.3.31. STANDARDISATION of CHASSIS PARTS. Date 4.12.30. Description of Parts. ANTI-SQUEAKING BRAKE SHOE. FRONT AXLE. X No. 7420. 7930. Drawing No.… | ||
| 05-page259 | The details for fitting a new part to a chassis, including the test date and associated costs. | ||
| View original record | ALTERATION to CHASSIS PARTS The number of the first chassis on which the new part will be fitted.........N.2. Series. Date when chassis will be handed to test...................7.3.31. Cost of… | ||
| 05-page260 | Procedure document detailing brake testing conditions and steps. | ||
| View original record | Y6/HS 22-EX. X7420. BRAKE TESTS. ------- Conditions. Front Brakes. C.I. Drums (cooling ribs) Ferobestos Linings .375 thick. Rear Brakes. C.I. Drums (cooling ribs) Ferodo Bonded Linings thick. Servo.… | ||
| 05-page261 | Series of brake tests and measurements on a vehicle. | ||
| View original record | Lo/HS BRAKE TEST. 6.3.31. 22-EX. (1) Cold measurement Foot Pedal 4 1/2" from dash. Front toggles 7/8" On leaving shop, servo groaned. After 1 mile, slight squeak from front and one groan from rear.… | ||
| 05-page262 | Brake testing procedures, measurements, and observations from a road test. | ||
| View original record | - 2 - Immediately on completion of braking. Foot Pedal from dash 5" Front toggles 1" each When cool 4 3/8" Foot pedal and Front toggles 1" each. (3) Brake Hand 70.M.P.H. to 10.MPH. 6 times. distance… | ||
| 05-page263 | Results of brake system tests. | ||
| View original record | L4/Hs BRAKE TESTS. 5.3.31. 22-EX. C.I. Drums (cooling ribs) Front & Rear. Ferobestos Linings .375 thick. Front. Ferodo Bonded Linings. Rear. Servo Cotton A. Linings. (1) Cold measurement front toggle… | ||
| 05-page264 | Results of brake performance tests from various speeds. | ||
| View original record | I.H. BRAKE TESTS. 19-EX. 4.3.31. From 70.MPH. to 10.MPH. cold. 231 ft. From 70.MPH. to 10.MPH. After 6 consecutive applications 462 ft. Distance of pedal from dash cold. 4¾". Distance of pedal from… | ||
| 05-page265 | Test report detailing a series of brake performance tests on vehicle 22-EX. | ||
| View original record | LdH2 BRAKE TESTS. 12.3.31. 22-EX. Foot Pedal 5 1/4" from dash. } Cold in shop. Front toggles 3/4" 12 brakes from 70 - 10. Foot Pedal 6". Front toggles 13/16. 10 miles braking 40 - 10 every 1/2 mile.… | ||
| 05-page266 | Test report on brake squeaking issues noted during a test run. | ||
| View original record | On resumption of test after interval the brakes squeaked both front and rear but as soon as brakes warmed up the squeak disappeared. The squeak from the N.S. rear brake noted on the morning run on the… | ||
| 05-page267 | Brake performance tests conducted during morning and afternoon runs. | ||
| View original record | 20/HS X7450. BRAKE TESTS. 13.3.31. 22-EX. Morning Run. Cold in Shop. Foot Pedal 4¾". Front Toggles 1⅜". 12 Brakes from 70 - 10. Foot Pedal 5⅛". Front Toggles 1½". 10 miles braking 40 - 10 every ½… | ||
| 05-page268 | Alterations to brake leverages, specifically cams and countershafts, on Phantom II cars. | ||
| View original record | To Hs/GWH. From Hs/Rm. 87360. Hs/Rm.3/KT.14.3.31. BRAKE LEVERAGES. You will remember that after the first 200 P.II's were produced there was an outcry because the pedal travel increased to rapidly. To… | ||
| 05-page269 | Brake tests and component measurements after covering a specific mileage. | ||
| View original record | Hs 87360. BRAKE TESTS. 22-EX. 21.3.31. 107 miles have been covered on Carburetter tests since the last report. Measurements cold in Shop. Foot Pedal 4¾". Front Toggles 15/16". 10 miles braking 40 - 10… | ||
| 05-page270 | Potential cures and experiments for rear wheel brake squeaks on the Phantom II model. | ||
| View original record | Hs...from PN. Copy to Eg. (crossed out) SE 87360. PN.2/WT27.3.31. Rear Wheel Brake Squeaks "PHANTOM II". Whilst we have succeeded greatly in regard to curing front wheel brake squeaks when and if we… | ||
| 05-page271 | Testing various brake linings for squeaks and efficiency with cast iron brake drums. | ||
| View original record | To By. From Hs/GWH. c. to Dr. Wor. RE. CAST IRON BRAKE DRUMS P.II We have been testing various brake linings for squeaks and efficiency using the C.I. brake drums. The test has comprised twelve… | ||
| 05-page272 | Brake test report for chassis 22-EX, detailing performance with standard drums and Cresswell 999W linings over several runs. | ||
| View original record | r7360. H/S BRAKE TESTS 1.4.31. 22-EX. Car returned from fitters with standard drums and Cresswell 999W linings. Foot Pedal 5½". Front Toggles ½". 5 miles running to warm up Foot Pedal 5½". Front… | ||
| 05-page273 | Efforts and experiments to cure rear wheel brake squeaks. | ||
| View original record | W/S. To Pn. From Hs/GWH. Hs/GWH.6/KT.1.4.31. RE. REAR WHEEL BRAKE SQUEAKS P.II. In answer to your Pn.2/WT.27.3.31. at the moment we have not got anything to cure rear brake squeaks. We tried out some… | ||
| 05-page274 | Unsuccessful results of a test on squeaking brakes. | ||
| View original record | To E. From He/GM. c. to R. S. c. to Mor. Sy. c. to Da. 87360 He/GM.7/KT.1.4.31. X.7360. X.5360. RE. SQUEAKING BRAKES. We have tried out the suggestion you sent us in your memo. E.1/M21.3.31., and have… | ||
| 05-page275 | Brake test report for chassis 22-EX after correction of the N.S.R. dust cover, detailing performance during rainy conditions. | ||
| View original record | H/S Y7360. BRAKE TESTS. 22-EX. Car returned from fitters after correction of N.S.R. dust cover. No squeak was noticed on taking out the car this morning. Throughout today's running it has rained. 20… | ||
| 05-page276 | Modifications to address brake effectiveness and squeaking issues on Phantom II models. | ||
| View original record | X7360. X7360. X4612 To Hs. from Sg. re Brakes on P.II's. Copy to Mor. PN. I should be glad to know how we stand now in regard to the question of a modification to overcome the difficulty of the brakes… | ||
| 05-page277 | Brake test report detailing mileage, brake performance, and adjustments made to the front and rear brakes. | ||
| View original record | H/C 87360 BRAKE TEST. 11.4.31. Car run 330 miles during week end. Brakes groaned at rear and squeaked badly from front. Returned to fitters for modification to front shoes. 6 brakes 70 - 10 Front… | ||
| 05-page278 | Test log page detailing vehicle braking performance and component measurements. | ||
| View original record | - 2 - 20 miles braking 40 - 10. every ¼ mile. 6 brakes 70 - 10. Foot Pedal 4¾". Front Toggles 1¾"N.S. 1¾"O.S. 134 Miles. .A.B.Roberts. R. Pattinson. 14.4.31. Warm in Shop. Foot Pedal 4¾". Front… | ||
| 05-page279 | Reporting on tests of ribbed brake drums for Phantom II models, detailing performance, material issues, and side effects. | ||
| View original record | To Sg. From Hs. c. to Wsr. c. to PN. re Brakes on P.11's. Replying to Sg17/E10.4.31. We have carried out tests which confirm that the present brakes fitted to our cars lose considerably in efficiency… | ||
| 05-page280 | Series of brake tests, adjustments, and modifications. | ||
| View original record | Y7360. H/S BRAKE TEST. 22-EX. 14.4.31. Warm in Shop. Foot Pedal 4". Front Toggles 1 1/4". Returned to fitters for modification to front shoes. Brakes taken up one notch all round. Foot Pedal 5 1/2".… | ||
| 05-page281 | The results of brake wear and performance tests under different configurations. | ||
| View original record | H/S 7360 14/4/31 BRAKE TESTS. No. of brakings from 70-10 MPH. No. of brakings from 40-10 MPH. Wear of F. brakes 3/8" = 1 notch. Wear of R. brakes Pedal Movement 1" = 1 notch.… | ||
| 05-page282 | Requesting a report on the behaviour of anti-squeak front brake shoes of the Hancock Type. | ||
| View original record | To PN. From Hs. c. to Md. c. to Wor. c. to Br. 7360.. Hs.8/MJ.14.4.31. ANTI-SQUEAK FRONT BRAKE SHOES. We are very anxious to get a report on the behaviour of the anti-squeak brake shoe (Hancock Type).… | ||
| 05-page283 | Positive feedback on newly fitted anti-squeak front brake shoes. | ||
| View original record | N/W. Hs. 87560? A5/W.15.4.31. re Repairs Modernizations - Anti-squeak front brake shoes. Your Hs8/MJ-14.4.31, addressed to Br - We have only fitted these brake shoes in one or two cases, but in… | ||
| 05-page284 | Fitting of anti-squeak front brake shoes to six specific cars. | ||
| View original record | Hs.. C. to Wer. Hd/WW3/KW15.4.31. [STAMP: RECEIVED 16 APR 1931] Anti-Squeak Front Brake Shoes. With reference to your Hs8/MJ14.4.31. kindly note that six sets of the anti-squeak brake device (Hancock… | ||
| 05-page285 | Brake efficiency tests on a Phantom II model, comparing standard and ribbed brake drums. | ||
| View original record | To Hs. From GWH. 87360 Hs/GWH.12/KT.20.4.31. RE. EFFICIENCY OF BRAKES. We have carried out the following tests for loss and gain in efficiency of brakes on P.II. 1st Test. Standard brake drums Ferodo… | ||
| 05-page286 | Brake test results for experimental models 22-EX and 19-EX, detailing stopping distances and component measurements. | ||
| View original record | HS r7360 BRAKE TESTS. 21.4.31. 22-EX. Ribbed drums fitted to front Foot Pedal 4¾". front Toggles ⅜" OS. ⅜" NS. Cold. 7 brakes from 70 - 10 1st brake 210 ft. 7th Brake 235 ft. measurements immediately… | ||
| 05-page287 | Development of different brake shoe designs to resolve issues with brake squeaks. | ||
| View original record | X7360 Hs. E. } FROM R. Da. Ev. } (At Le Canadel) c. Sg. Wor. R2/M23.4.31. X.7360 X.5360 BRAKE SQUEAKS I had the impression that we had standardised the pivoted tip to all brakes. We had done much work… | ||
| 05-page288 | List of cars fitted with a special anti-squeak device for front wheel brakes. | ||
| View original record | X7360 PN.S/WT29.4.31. S/W. [Struck through text] For...from PN. Copy to Hs. [Struck through initials] [Stamp] RECEIVED 1931 APR 30 HS Hancock Brake-shoes. I think the following list includes all those… | ||
| 05-page289 | Brake inefficiency tests on Phantom cars, comparing different brake drum and shoe configurations. | ||
| View original record | To R. From Hs/GWH. c. to Sg. Nor. c. to E. Da. c. to Ey. We have been receiving a number of complaints from Owners, of the inefficiency of brakes on Phantom cars after several applications of the… | ||
| 05-page290 | Brake drum and shoe upgrades to address squeaks and efficiency loss. | ||
| View original record | - 2 - Hs/CWH.4/KT.5.5.31.contd These tests prove that the present L.H. cars and the present R.H. cars now being produced, which are fitted with the broad rear brake shoes and the 40% stiffer plain… | ||
| 05-page291 | Outlining an investigation into and a proposed solution for 'Phantom Rear Brake Groans'. | ||
| View original record | Y7360. To R. From Hs/GWH. c. to Sg. Wor. c. to E. Da. c. to By. Hs/GWH.2/MJ.19.5.31. Re. Phantom Rear Brake Groans. We have found, during our investigations of the rear foot brake groans, that the… | ||
| 05-page292 | Tests carried out to overcome brake squeaks on Phantom cars. | ||
| View original record | To R. From Hs/GWH. c. to Sg. Mor. c. to Ja. S. c. to Hy. 87560. Hs/GWH.6/KT. 21.5.31. Re. BRAKE SQUEAKS. We have during the last four weeks been trying out various schemes to overcome the squeak and… | ||
| 05-page293 | Testing steel ribbed brake drums and a solution for rear brake groans. | ||
| View original record | - 2 - Hs/GMH.6/KT. 21.5.31. 6th. Steel Ribbed Brake Drums. Squeaks were equally pronounced with these drums as with the plain steel drums, both front and rear. 7th. To overcome the rear brake groans… | ||
| 05-page294 | Advantages of swivelling brake shoes and the rationale for persevering with their design. | ||
| View original record | HS. FROM R. X7360 R2/M22.5.31. C. to SG. WOR. C. to BY. BRAKE SHOES. X.7360. X.5360. When the swivelling brake shoes were suggested it was realised that they would be very considerably better in the… | ||
| 05-page295 | Configuration and results of brake tests. | ||
| View original record | Hs 87360 BRAKE TESTS. 22-EX. Standard drums on front. Standard drums on rear fitted with sentinels, melting point 418°C. Ferodo linings all round. Plain shoes on front with lead weights. Plain shoes… | ||
| 05-page296 | Tests and a proposed solution for rear foot brake groans on the Phantom II model. | ||
| View original record | To R. from Hs/GWH. c. Sg. c. Mor. E. c. De. Ey. PHANTOM Re - REAR FOOT BRAKE GROANS. We have been carrying out extensive tests to cure the groans from the Phantom II rear brakes. To obtain a… | ||
| 05-page297 | Extract from a 10,000-mile trial report concerning tests on stiffer brake drums and pivoted shoes. | ||
| View original record | 87360. EXTRACT FROM :- R.1/M30.5.31. P.2. 10,000 MILES TRIAL. ANother feature which could be tried out at the same time is in connection with the brakes, which would consist of the stiffer ribbed… | ||
| 05-page298 | Brake adjustment procedure for the Phantom II No.2 Series and all left-hand drive cars. | ||
| View original record | To Hd. From Hs/Lid. For Depot Sheet. Hs/Lid.1/MJ.30.5.31. X.7360. Phantom II Brake Adjustment No.2 Series onwards and all left-hand cars. The brakes hand, foot, and front on No.2 Series cars and… | ||
| 05-page299 | Complaint about rear foot brake groans on the Phantom model. | ||
| View original record | 87360. To Hs. from Sg. Copy to R. Wor. E. DA. BY. BP. Re Phantom. Rear Foot Brake Groans. Sg8/E5.6.31 Referring to Hs/GHW12AD29.5.31 the point referred to seems to be extremely important in enabling… | ||
| 05-page300 | Solutions for rear brake groans and squeaks, including an anti-squeak shoe. | ||
| View original record | To R. From Hs. c. to Sg. For. c. to G. Dm. c. to By. EP. 87360 Hs.11/MJ.9.6.31. P.2 REAR BRAKE GROANS & SQUEAKS. Referring to our memo Hs/GSH.1/AD.29.5.31. where we suggest that by interconnecting the… | ||
| 05-page301 | Modifications to the brake systems for chassis Nos. 26-EX and 31-GX during sales trials. | ||
| View original record | 873601 Hs/GWH from Mx. Mx3/T10.6.31. re Chassis Nos.26-EX and 31-GX - Sales Trials. In writing to me about the fitting of the wider brake shoes and thicker brake drums to these two cars, Sg. in his… | ||
| 05-page302 | Requesting the preparation of various brake parts for experimental cars. | ||
| View original record | To RHC. from Hs/Rm. Copy 87360. Hs/Rm16/MJ29.6.31. X.7360 X.5360 BRAKES FOR EXPERIMENTAL CARS. We want to get the latest type of Hancock brake shoes with thick Ferodo lining on to our experimental… | ||
| 05-page303 | Proposal to scrap certain 40/50 HP brake shoe liners held by Ferodo Limited and in the company's own stores. | ||
| View original record | V7360 To BY. from ROY. c. to Wsr. [struck through] c. to Hs. ROY8/MG8.7.31 40/50 HP. Brake Liners According to BY/Cgh5/G26.6.31 it is proposed to scrap certain 40/50 HP. Brake Shoe Liners, as details… | ||
| 05-page304 | Cover letter from G.W. Hancock sending a report upon a brake test. | ||
| View original record | X7360 To Hs/Rm. from GWH. Hotel de France, Chateauroux, France. X7941 X7360 27.7.31. I herewith send a report upon the test we did with brakes which Hs. asked me to let him have. G.W.Hancock. | ||
| 05-page305 | Series of tests to diagnose and resolve rear brake groans on the Phantom II. | ||
| View original record | To R. etc. from GWH. RE : REAR BRAKE GROANS - PHANTOM II. We carried out a series of tests with the object of finding out the cause of the rear brake groans. The groans are entirely free from squeaks… | ||
| 05-page306 | Series of tests on brake drums to eliminate groans and vibrations. | ||
| View original record | -2- 5th Plain steel drums were again fitted. The result was groans were immediately produced. 6th Present damping plates were carefully bedded on to the drums, and two extra retaining springs were… | ||
| 05-page307 | Confirming the decision to scrap 40/50 HP brake liner material due to a high rate of wear. | ||
| View original record | ROY. c. Wor. c. Hs. 47360 BY3/G.11.8.31. (11 8 31) 40/50 HP. BRAKE LINERS. ROY8/MG.8.7.31. We were fully aware of the value of the material instructed by me to be scrapped in BY/Cgh5/G.26.6.31. We are… | ||
| 05-page308 | Brake test results and component specifications for chassis 19-EX. | ||
| View original record | RM x7360. 19.10.31. BRAKE TESTS. 19-EX. Cold measurements - F.P. from dash hand pressure 5 3/4" R. arms O.S. 3/4" N.S. 3/4" Front toggles O.S. 5/8" N.S. 5/8" 12 brakes 70 - 10 1st brake 250 ft. 12th… | ||
| 05-page309 | Brake tests for a 19-EX vehicle, detailing cold measurements, stopping distances, and brake component specifications. | ||
| View original record | RM 87360 BRAKE TESTS. 19-EX. 20.10.31 Cold measurements - Foot Pedal 5¼" Rear Arm both ⅞" Front toggles ⅝" O.S. ½" N.S. 12 brakes 70 - 10. 10 miles 40 - 10 every ¼ mile. 12 brakes 70 - 10. 10 miles 40… | ||
| 05-page310 | Testing of 45° cam angles for foot brakes on R.H. and L.H. chassis. | ||
| View original record | Ry/Cgh. from Hs/Rm. c. MX. X-360 Hs/Rm.6/AD18.11.31. P.2. FOOT BRAKES. We cannot yet recommend that the two cam angles on the R.H. and L.H. chassis should be the same because we have had no experience… | ||
| 05-page311 | Standardisation of chassis parts for rear brakes with a flexible toe. | ||
| View original record | RR 785 (10H) (8459, 24-10-30) 6/3185. x7360. COMPLETED 20.11.31. STANDARDISATION of CHASSIS PARTS. Date 25.9.31. Description of Parts. Rear Brakes with Flexible Toe. X No. 7360. Drawing No. G.78278.… | ||
| 05-page312 | Standardisation form detailing the fitting of a new part, including chassis number and costs. | ||
| View original record | STANDARDISATION OF CHASSIS PARTS The number of the first chassis on which the new part will be fitted.... 21st. in H.2. Date when chassis will be handed to test................ Cost of scrapped… | ||
| 05-page313 | Weight comparison sheet for various 1-40/50 model brake drum assemblies and their components. | ||
| View original record | X7360 1-40/50 Brake Drum Complete Weight. Nov. 1931. X4612. Weight of complete Assembly on Hub Shell. Lake and Elliott lines alum Finish. G79546-7 complete with back plate, hub etc., = 49 lb. 4ozs.… | ||
| 05-page314 | Standardisation of chassis parts for the lubrication of the rear brake actuating shaft. | ||
| View original record | RR 785 (10M) (S459, 24-10-30) 6/3155. X-7360. COMPLETED 3.12.31. STANDARDISATION of CHASSIS PARTS. Date 25.9.31. Description of Parts: Rear Axle. Lubrication of Rear Brake Actuating shaft. Origin: To… | ||
| 05-page315 | Rear brakes with pivoted shoes 'coming on' during dynamometer testing and requesting an increase in clearance. | ||
| View original record | Sft. for Mr. Roscoe. c. Hs/Rm. X7360. Mx7/H9.12.31. Rear Brakes with pivoted shoe. We have just had another case of rear brakes "coming on" on the dynamometer. This makes three in all. Will you,… | ||
| 05-page316 | Adjustments and clearances for rear pivoted brake shoes P.II. | ||
| View original record | X7360 To By. from Hs/Les. c. to Mx. Hs/Les.7/KT.15.12.31. REAR PIVOTTED BRAKE SHOES P.II. The auxiliary shoe is now given .025" movement at the tip. This .025" corresponds to one notch on the… | ||
| 05-page317 | Draft leaflet for brake adjustment in the 40/50 HP Chassis Handbook No. VII. | ||
| View original record | BY. Hs. Hd. Mx. EP. X7360 BY/NW2/MB18.12.31. Re 40/50 H.P.CHASSIS HANDBOOK NO.VII. BRAKE ADJUSTMENT. Referring to Hs/Les4/KT.16.12.31; we attach herewith draft of a leaflet which we propose inserting… | ||
| 05-page318 | Leaflet providing updated measurements for brake adjustments on a 40/50 HP chassis. | ||
| View original record | (Insert in 40/50 H.P. Rolls-Royce Chassis Handbook No.VII (L.H.) facing page 73.) BRAKE ADJUSTMENT. 71 & 73 The measurements given on pages 73 & 75 should be ignored in favour of those given… | ||