Rolls-Royce Archives
| Identifier | Entry | ||
| scan0001 | Performance test sheet for component 46 P.R. E.A.C. IIE with the cut-out open. | ||
| View original record | RR6 (150T) (DA632 14-3-24) MP 289585 X8230 ROLLS-ROYCE LTD. INSTRUCTIONS. To 46 P.R. E.A.C. IIE Order No. Customer's No. CUT-OUT OPEN. EN. R.P.M. | DRUM R.P.M. | LBS. LIFT | HP. | DIFF. HP. GAIN. 500… | ||
| scan0002 | Design changes for induction and exhaust pipes, referencing specific drawings and modifications to joints and heat jackets. | ||
| View original record | To BY. from E. c. to CJ. HS. X8230 S E C R E T. E1/M23. 5. 24. EAC. 11. INDUCTION AND EXHAUST PIPES. X.9230 X8230 X.9070 X8070 We send you herewith drawings Nos. LeC.1872 and 1873 shewing the above.… | ||
| scan0003 | Secret memo regarding the design and drawings for an exhaust system, detailing a new silencer and a cut-out valve. | ||
| View original record | √8230 To BY. from E. c. to CJ. HS. S E C R E T. E1/M31.5.24. E.A.C. 11. EXHAUST SYSTEM. X.9230. X8230 We send you herewith drawings Nos. LeC.1874, 1875, and 1877 dealing with the lower portion of the… | ||
| scan0004 | Secret memo regarding proposed modifications to an exhaust system, including the re-introduction of a front silencer. | ||
| View original record | X8230 To BY. from E. c. to CJ. c. to Hs. S E C R E T. E.A.C.II. EXHAUST SYSTEM. X.8230. We send herewith drawing No. LeC.1918, shewing an arrangement scheme of the proposed modifications. You will… | ||
| scan0005 | Dispatch of a blueprint for an E.A.C.II. exhaust system. | ||
| View original record | X8230 Hs. c. Mr. Sheldon BY/C2/H. 12.9.24. E.A.C.II. EXHAUST SYSTEM. X. With reference to E1/M. 8.9.24. we send you herewith blueprint of LeC.1918 shewing the above, and if you require us to do any… | ||
| scan0006 | Exhaust noise issues and potential modifications to the silencer system. | ||
| View original record | To Hs. from R. c. to CJ. c. to BY. c. to E. c. to EP. SECRET. 48230 R9/M23.10.24. EAC.3 & 2. EXHAUST. X. 8230 X. 9230 X. 8490 This is the type that is hardly satisfactory in the exhaust (not EAC.2 as… | ||
| scan0007 | Redesign of the exhaust system for an E.A.U. engine to fit a sequence starter motor. | ||
| View original record | To BY. from R. c. to HS. CJ. SECRET. E. A. C. X. 8770 X. 8305 X. 8230 18230 Mr. Hives is very keen to get the fabric coupling on the EAU. engine as soon as possible. We have therefore in re-designing… | ||
| scan0008 | Design alterations for the 'V' series exhaust system. | ||
| View original record | To BY. from E. c. to CJ. HS. X8230 E1/M8.12.24. 'V' SERIES EXHAUST PIPES. X.8230 X.8050 We send you herewith drawings No. LeC.1956., arrangement of exhaust pipes, shewing the schemes on which we are… | ||
| scan0009 | Query regarding the possibility of removing the exhaust choke valve connected to the accelerator pedal. | ||
| View original record | To Hs. from E. c. to CJ. X8230 E2/M8.12.24. RE. EXHAUST CHOKE VALVE. X. 8230 X.3436 Would you kindly let us know if there is any prospect of being able to do without the exhaust choke valve connected… | ||
| scan0010 | The necessity of retaining the exhaust choke valve on the 'V' series chassis until distribution is improved. | ||
| View original record | To E. from Hs. 18230 Hs12/LG15.12.24. EXHAUST CHOKE VALVE. We do not think we can possibly do away with the exhaust choke valve on the 'V' series chassis. It will be necessary for us to materially… | ||
| scan0011 | Secret memo regarding the design of exhaust fittings and silencer brackets for the 'V' series. | ||
| View original record | X. 8230 To BY. from E. S E C R E T. E1/M20.12.24. c, to CJ. HS. EXHAUST FITTINGS - 'V' SERIES. We send you herewith drawings Nos. LeC. 1962/65/68., dealing with the above. Before leaving WW. Mr. Royce… | ||
| scan0012 | Secret memo regarding the design and controls for the 'V' Series rear exhaust silencer and cut-out, with drawings sent for approval. | ||
| View original record | X8230 To BY. from E. S E C R E T. E3/M7.1.25. c. to CJ. HS. E. A. C. RE. 'V' SERIES REAR EXHAUST SILENCER X.8230 AND CUT-OUT. X.8490 We send you herewith drawings LeC.1970/1., dealing with the above.… | ||
| scan0013 | Secret memo discussing the design of a rear silencer support using sheet steel for 'V' series exhaust fittings. | ||
| View original record | X. 8230 To BY. from E. c. to CJ. HS. S E C R E T. E3/M14.1.25. RE. EXHAUST FITTINGS - 'V' SERIES X. 8230 Re. the rear silencer support on the above, we have just received a memo. from R. saying that a… | ||
| scan0014 | Confirming a drawing has been made for an exhaust silencer bracket from Mr. Royce's sketch and a blueprint sent to him. | ||
| View original record | TO BY. FROM E. Copy to CJ. - HS. S E C R E T E. A. C. X8230 E3/M22.1.25. EXHAUST SILENCER BRACKET. We send herewith drawing No. LeC.1985., shewing the above made to Mr. Royce's pencil sketch for a… | ||
| scan0015 | The power losses and modifications of an exhaust system. | ||
| View original record | R.R. 493 (40 H) (SL 42 12-7-23). J.H., D. 8230 [handwritten and crossed out] EXPERIMENTAL REPORT. COPIES TO: R.CJ. BJ. WOR. By. E. Da. EP. PN. OY. Expl. No. 8230 [handwritten] REF. HS3/LG10. 2. 25.… | ||
| scan0016 | The analysis of power losses due to the latest exhaust system. | ||
| View original record | R.R. 493A (50m) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. -1- Expl. No. REF:Hs/ACL/LG10.2.25. ANALYSIS OF POWER LOSSES DUE TO LATEST EXHAUST SYSTEM. LeC.1956. The following experiments were made… | ||
| scan0017 | The efficiency and condition of a silencer system after testing. | ||
| View original record | R.R. 493A (50H) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. -2- Expl. No. REF HS/ACL/LG10.2.25. very efficient and practically the same power output is obtained as with open exhaust. The 'open… | ||
| scan0018 | Alterations and performance tests of an exhaust system. | ||
| View original record | R.R. 493A (50H) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. -3- Expl. No. REF: Hs/ACL/LG10.2.25 The expansion chamber nozzle - see diagm. - also distorted slightly. EXHAUST SYSTEM EXPERIMENTS CONTD… | ||
| scan0019 | Diagram illustrating the components of the E.A.C. exhaust system. | ||
| View original record | E. A. C. EXHAUST SYSTEM. (1) MANIFOLDS. Front expansion box. Expansion chamber nozzle. Intermediate pipe. Silencer. Baffle plates. Cutout holes in intermediate pipe. Swan neck unit. cutout. | ||
| scan0020 | Data table showing the loss of power due to the temperature of a hot spot at various RPMs. | ||
| View original record | (2) LOSS OF POWER DUE TO TEMPERATURE OF HOT SPOT. Bar. 754.5 Temp. 18°C. R.P.M. | With ht. lbs. | Cold lbs. | Loss due to ht. lbs. | % loss due to heat. 2500 | 107.5 | 110 | 2.5 | 2.27 2250 | 118.5 |… | ||
| scan0021 | Analysis of exhaust system power output with various parts, showing horsepower at the flywheel for different RPMs. | ||
| View original record | ANALYSIS OF EXHAUST SYSTEM POWER OUTPUT WITH VARIOUS PARTS. (3) TABLE: H.P. at Flywheel. R.P.M., 1, 2, 3, 4, 5, 6, 7 2500, 112.5, 90.1, 99.5, 100.5, 114, 111.5, 113 2250, 113.5, 94.75, 101.3, 102.5,… | ||
| scan0022 | Table detailing HP loss at the flywheel due to specific system components at varying R.P.M. | ||
| View original record | (4) LOSS DUE TO PARTICULAR PARTS OF SYSTEM. | | LOSS IN H.P. AT FLYWHEEL. | | | |---|---|---|---|---| | R.P.M. | Loss to swan neck Fish tail (3 - 2) | Loss to silencer and baffles. (4 - 3) | Loss to… | ||
| scan0023 | Silencer experiments showing performance figures after system alterations. | ||
| View original record | (5) SILENCER EXPTS. CONTD :- FIGURES OBTAINED SINCE ALTERATION OF SYSTEM. Alterations :- (1) 50% increase in No. of holes in Inter: pipe. (2) 9" wide fish tail instead of 6" wide. | R.P.M. | Loss to… | ||
| scan0024 | Graph plotting power output and horsepower loss against R.P.M for an E.A.C. engine exhaust system after alterations. | ||
| View original record | E.A.C. ENGINE EXHAUST SYSTEM (EXPER.) POWER OUTPUT OF ENGINE WITH VARIOUS PARTS OF THE EXH. SYSTEM SINCE ALTERATIONS. ALTERATIONS:- THE HOLES IN THE INTERMEDIATE PIPE HAVE BEEN INCREASED IN NUMBER BY… | ||
| scan0025 | Graph of engine power output experiments with various exhaust system configurations. | ||
| View original record | NO. 1. E.A.C. ENGINE. EXHAUST SYSTEM EXPTS. POWER OUTPUT OF THE ENGINE AT THE FLYWHEEL WITH VARIOUS PARTS OF THE EXHAUST SYSTEM. LATEST EXH. & SILENCER SCHEME Le.C. 1956. FROM CURVES CHIEF LOSSES ARE… | ||
| scan0026 | Graph of horse power loss against R.P.M. for different components of an E.A.C. engine exhaust system. | ||
| View original record | NO. 2 E.A.C. ENGINE. POWER LOSS DUE TO VARIOUS PARTS OF THE EXHAUST SYSTEM. LOSS IS GIVEN IN B.H.P. AT THE FLYWHEEL. LATEST EXH & SILENCER SCHEME. LEC 1956. G. 2-25. LOSSES. HORSE POWER LOSS. R.P.M.… | ||
| scan0027 | Instruction to implement a new scheme for a spring loaded exhaust choke valve, cancelling previous fittings. | ||
| View original record | X. 8230 To BY. from E. S E C R E T. E1/M26.2.25. c. to CJ. HS. E. A. C. SPRING LOADED EXHAUST CHOKE VALVE. X. 8230 We send herewith drawing LeC.1999., shewing the above. The fittings at present used… | ||
| scan0028 | Confirming a verbal conversation to alter the exhaust system by removing bends as the starter motor is no longer required. | ||
| View original record | 8230 Mr.Shelton. c. Hs. BY1/H. 27.2.25. ----------- E.A.C.II. EXHAUST SYSTEM. ------------------------- I wish to confirm my verbal conversation to the effect that we should immediately, and if it is… | ||
| scan0029 | Indicator diagrams for engine tests with double exhaust pipes and a manifold for each 3 cylinders. | ||
| View original record | E.R.C. INDICATOR DIAGMS. DOUBLE EXH. PIPES. [MANIFOLD TO EXCH 3 CYLS] SHEET 1. Top Left Graph: 2500 RPM 120 lbs YELLOW. EXP. 362. IMEP 110. Top Right Graph: 1000 RPM 147 lbs EXP. 35A 369 IMEP 118.5… | ||
| scan0030 | Indicator diagrams showing engine performance with single straight pipes at various RPMs. | ||
| View original record | SHEET 2 SINGLE PIPES. 1 STRAIGHT PIPE TO EACH PORT WITH EXCEPTION OF 1000 & 600 RPM Graph 1 (Top Left): 2500 RPM 130 lbs. BMEP = 91.5. IMEP 119. Graph 2 (Top Right): 1000 RPM 143 lbs. THIS DIAGM IS… | ||
| scan0031 | Sheet of four indicator diagrams for an engine with a standard exhaust manifold at various RPMs. | ||
| View original record | DIAGMS WITH STANDARD EXH MANIFOLD E.A.C. SHEET 3 Graph 1: 2500. STD. 113 lbs B.M.E.P. = 79.5. Graph 2: 600 R.P.M. STD MANIFOLD 144 lbs. B.M.E.P. 101.5. Graph 3: 1500 STD. 143 B.M.E.P 100.9 Graph 4:… | ||
| scan0032 | Five graphs comparing engine manifold performance at 2000 RPM. | ||
| View original record | SHEET 4 MANIFOLD COMPARISONS AT 2000 R.P.M. Top Left Graph: SINGLE EX PIPES TO EACH CYL. 2000 R.P.M. 141 lbs. Top Right Graph: 2000 R.P.M. LARGE MANIFOLD 137 lbs. Middle Left Graph: COMPN 2000 R.P.M.… | ||
| scan0033 | Graph of piston displacement for crank angles for a 40-50 engine with a standard exhaust system and closed cut out. | ||
| View original record | Indicated Vol. Efficiency 40-50 ENGINE. STANDARD EXH. SYSTEM. CUT OUT CLOSED. PRESS. SCALE 1" = 6.2 lbs/□". CYL NO. 6. R.P.M. 2000. MAX PRESS. AT END OF EXH STROKE = 7.13 lbs/□" INDICATED VOL. EFFCY =… | ||
| scan0034 | Graph showing the results of an exhaust system test on cylinder 6 of a 40-50 engine at 2000 RPM. | ||
| View original record | 40-50 ENGINE. STANDARD EXHAUST SYSTEM. PRESSURE SCALE 1" = 6.2 lbs/□" CYL. NO. 6. R.P.M. 2000. CUT OUT OPEN. MAX PRESS ON NEAR END OF EXH STROKE = 2.79 lbs/□" INDICATED VOL. EFFICIENCY = 88% Indicated… | ||
| scan0035 | Indicator diagram showing pressure vs crank angle for a 40-50 engine's exhaust stroke. | ||
| View original record | 40-50 ENGINE. W.W. EXH. SCHEME. PRESS. SCALE 1" = 6.2 lbs/□" CYL NO 6. R.P.M. 2000. CUT OUT CLOSED. MAX. PRESS. NEAR END OF EXH STROKE = 10.85 lbs/□" INDICATED VOL. EFFCY = 91% ATMOS. LINE PISTON… | ||
| scan0036 | Graph of piston displacement for crank angles, relating to a 40-50 engine's exhaust scheme. | ||
| View original record | 40-50 ENGINE. W.W. EXHAUST SCHEME. PRESS SCALE 1" = 6.2 lbs/□" CYL NO. 6. R.P.M. 2000. CUT.OUT OPEN. MAX PRESS NEAR END OF EXH STROKE = 7.6 lbs/□" INDICATED VOL. EFFCY. = 88% ATMOS LINE PISTON… | ||
| scan0037 | Graph showing the Derby exhaust scheme for a 40-50 engine, cylinder no. 6 at 2000 RPM. | ||
| View original record | 40-50 ENGINE. DERBY EXHAUST SCHEME. PRESS. SCALE 1"=6.2 lbs/□" CYL. NO. 6. R.P.M. 2000. CUT OUT CLOSED MAX. PRESS NEAR END OF EXHAUST STROKE = 9 lbs/□" INDICATED VOL EFFCY= 88%. ATMOS. LINE PISTON… | ||
| scan0038 | Graph of pressure versus crank angle for a 40-50 engine's Derby exhaust scheme. | ||
| View original record | 40-50 ENGINE. DERBY EXH. SCHEME. PRESS. SCALE 1" = 6.2 lbs/□" CYL. NO 6. R.P.M. 2000. CUT OUT [text crossed out] OPEN. MAX. PRESS NEAR END OF EXH. STROKE = 5.3 lbs/□" INDICATED VOL. EFFCY = 88%.… | ||
| scan0039 | Secret memo requesting a scheme to convert 40/50 cars to water-heated throttles, cancelling the exhaust butterfly valve. | ||
| View original record | X8230 To BY. from E. S E C R E T. E1/M28.4.25. c. to CJ. HS. RE. 40/50 CARS WITH EXHAUST HEATED THROTTLES. X. 8230 X. 3435 Would you kindly prepare, in accordance with Mr. Royce's wishes, a scheme for… | ||
| scan0040 | On overheating issues in 40/50s models, discussing the choice between exhaust heated and water heated throttles. | ||
| View original record | To CJ. from R. c. to Hs. EY. E. +8230 R5/M28.4.25. RE. OVERHEATING OF 40/50S. CJ1/E27.4.25. X. 766 X. 3536 X. 8230 I have just heard of the Australian trouble. My impression is that the choke valve in… | ||
| scan0041 | Suggestion to wire Australia with instructions to modify and retest a throttle system. | ||
| View original record | -2- I suggest wiring Australia with Derby's approval as to possibilities of doing so, etc. as follows :- "CANCEL VALVE IN EXHAUST AND REVERT TO WATER HEATED THROTTLE RETEST AND REPORT". R. | ||
| scan0042 | Recommendations for engine cooling modifications to prevent water boiling, particularly for hot climates. | ||
| View original record | 48230 Extract from R1/M29.4.25. X.8770 X.2565 WATER BOILING 40/50 X.766 X.8230 For the hot climates, and preferably generally, I am recommending that we cancel the valve in the exhaust pipe, using an… | ||
| scan0043 | Studies for chassis improvements based on points raised by Mr. Johnson. | ||
| View original record | 48230 To E. & DA. from R. To AJS. c. to HS. BY. R6/M15.4.25. FUTURE CAR WORK. 766 X.8770 6430 X.5770 8230 X.8410 Please contradict if incorrect. When you get time please make studies for chassis… | ||
| scan0044 | Test on exhaust pipe expansion, requesting alterations due to reported failures. | ||
| View original record | To BY/SS. from Hs/Rm. X8230 Hs/Rm1/LG30.4.25. EAC. EXHAUST MANIFOLD. Attached is a test we have carried out on the expansion of the exhaust pipes. We have reports from France that the dowel pieces… | ||
| scan0045 | The expansion of F.H.C.I. exhaust manifolds. | ||
| View original record | EXPERIMENTAL REPORT 23-7-35 EXPANSION OF F. H. C. I. EXHAUST MANIFOLDS Tests carried out on 8 F. A. C. II unit with modified manifolds. Maximum Expansion 1st Test .020" 2nd Test .040" 3rd Test .025"… | ||
| scan0046 | Tests of heat flow to cooling water with varying exhaust back pressure on an 'Eagle' engine. | ||
| View original record | R.R. 493A (50R) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. Expl. No. REF¹³/ACL/LG29.4.25. TESTS ON HEAT FLOW TO THE COOLING WATER WITH EXHAUST BACK PRESSURE TAKEN ON 'EAGLE' ENGINE. The following… | ||
| scan0047 | Analyzing heat flow and power curves under different throttle and back pressure conditions. | ||
| View original record | R.R. 493A (50H) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. -2- Expl. No. REF: Hs/ACL/LG29.4.25. TEST (A) CURVE 2. As would be expected we get a steady fall in the heat dissipated as the power on… | ||
| scan0048 | Engine heat flow, back pressure, and power output. | ||
| View original record | R.R. 493A (50H) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. -3- Expl. No. REF: Hs/ACL/LG29.4.25. to open up the throttle and the heat flow increases although the power at the flywheel is the same.… | ||
| scan0049 | Exhaust down-pipe baffle and its effects on over-heating. | ||
| View original record | R.R. 493A (50H) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. Expl. No. REF:Hs/Bn/LG30.4.25. EXHAUST DOWN-PIPE BAFFLE. We have carried out a number of experiments on the car, both on the dynamometer… | ||
| scan0050 | The effects of a closed exhaust baffle on engine performance and cooling system temperature. | ||
| View original record | R.R. 493A (50R) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. -2- Expl. No. REF: Hs/Rn/LG30.4.25. 25 m.p.h. was maintained by varying the throttle opening. It was noted that, due to the fall in power… | ||
| scan0051 | Tests of an exhaust baffle and butterfly related to engine overheating. | ||
| View original record | R.R. 493A (50H) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. -3- Expl. No. REF: Hs/Rn/LG30.4.25. Test (A) shewed no difference. Test (B) shewing a difference which could only just be measured, and… | ||
| scan0052 | Graph plotting heat flow to cooling water against brake horse power for an E.A.C. engine. | ||
| View original record | E.A.C. ENGINE, HEAT FLOW TO COOLING WATER ENGINE SPEED CONSTANT AT 1500 R.P.M. NO 1. SHOWS FALL IN HP & HT. FLOW AS BACK PRESSURE INCREASES NO 2. " " " " " THROTTLE IS CLOSED. B.Th.U's/MIN. B.H.P.… | ||
| scan0053 | Graph plotting heat flow to cooling water against increasing exhaust back pressure for an E.A.C. engine at 1500 RPM and 50 B.HP | ||
| View original record | HEAT FLOW TO COOLING WATER. WITH INCREASING EXHAUST BACK PRESSURE. E.A.C. ENGINE. AT 1500 RPM. AND 50 B.H.P. THE SPEED & H.P. IS CONSTANT FOR THIS TEST. AS THE EXH. BACK PRESSURE IS INCREASED THE… | ||
| scan0054 | Summary on over-heating investigations. | ||
| View original record | R.R. 493 (40 H) (SL 42 12-7-23). J.H., D. X8230 EXPERIMENTAL REPORT. COPIES TO: R.CJ. BJ. WOR. By. E. Da. EP. PN. OY. Expl. No. 766 8230 REF. HS3/LG1. 5. 25. TESTER. A. C. Lovesey. W. A. Robotham.… | ||
| scan0055 | Secret memorandum about reverting to water heating for the throttle on the EAC and 40/50 models. | ||
| View original record | To hs. from R. H8230 S E C R E T. R2/M1.5.25. EAC. AND 40/50. THROTTLE HEATING. X.8230 X.3436 X.766 E. and I have come to the conclusion that we should be better off if we revert to water heating of… | ||
| scan0056 | Secret memo suggesting making exhaust downtake pipes from Everbright or Stainless steel to avoid brazing or welding. | ||
| View original record | X. 8230 To Hs. from R. c. to CJ. BY. S E C R E T. R1/M4.5.25. E. A. C. EXHAUST PIPES. With regard to the exhaust downtake pipes I suggest that these may stand better if made in Everbright, or… | ||
| scan0057 | Exhaust fumes entering the car body and a proposed fix involving a swan neck exhaust pipe. | ||
| View original record | To Hm. from R. c. to CJ. BJ. Hs. Y8230 R4/M11.6.25. RE. ENGINE EXHAUST FUMES IN BODY. X. 8230 X. 3436 X. 3908 I saw BJ. on this subject, and admitted that I had noticed the same fault, the smell… | ||
| scan0058 | Customer and press criticism regarding the exhaust noise of the 'New Phantom' and requesting solutions. | ||
| View original record | To Hs. from BJ. BJ15/H22.7.25. X8230 Re "NEW PHANTOM" - Silence. (Exhaust). Cx8/CM21.7.25. We have received a number of criticisms from prospective customers, and even in the press, concerning the… | ||
| scan0059 | From Hs. to BJ. regarding complaints about exhaust noise in the New Phantom and ongoing tests with modified silencers. | ||
| View original record | To BJ. from Hs. H8230 Hsl/LG23.7.25. NEW PHANTOM - EXHAUST NOISE. Referring to BJ15/H22.7.25. We have realised that the exhaust noise in the Phantom was likely to be the cause of complaints. We have… | ||
| scan0060 | Proposal to experiment with stainless steel tubes for exhaust systems to combat corrosion. | ||
| View original record | 48230 HS. C. HC E.A.C. EXHAUST SYSTEM. In regard to the corrosion of the exhaust pipes where lagged with asbestos, we have arranged, as you will have seen, to have some pipes calorized as an… | ||
| scan0061 | Requesting an update on improving the exhaust noise of the New Phantom. | ||
| View original record | To H.s. from B.J. BJ5/H20.8.25. 18230 EXHAUST NOISE: NEW PHANTOM. I attach a copy of memorandum received from P.N. concerning exhaust noise on the New Phantom. Will you please let me know what is the… | ||
| scan0062 | Request to schedule the testing of a New Phantom's improved, noise-reducing exhaust system in London. | ||
| View original record | To Hs. from BJ. BJ2/H10.8.25. NEW PHANTOM - EXHAUST NOISE. Hs1/LG23.7.25. We shall be glad to know on what date you expect to be able to send a car to London for us to try, with the improved exhaust… | ||
| scan0063 | Customer criticism and the negative impact of the 'New Phantom' exhaust noise on the company's reputation. | ||
| View original record | COPY. To BJ. PN1/DN19.8.25. From PN. "NEW PHANTOM" EXHAUST. & I conclude that it is only those who have day by day to give demonstration runs on the "New Phantom" to enquirers, who can fully… | ||
| scan0064 | Improving the exhaust system for the New Phantom and resolving a whistling noise. | ||
| View original record | 48230 To BJ. from Hs. Hs7/LG21.8.25. NEW PHANTOM - EXHAUST NOISE. At the present moment all available experimental Phantom cars are monopolised on the steering tests. If you could arrange to send a… | ||
| scan0065 | Plan to test a modification for exhaust noise on 'New Phantom' trial cars. | ||
| View original record | X8230 PN5/DN21.8.25. TO Hs c. to BJ c. to CWB FROM PN Exhaust sounds on "New Phantoms". I understand from CWB on his return from Derby that you have a method of dealing with this exhaust noise… | ||
| scan0066 | The fitting of a new exhaust system to a New Phantom Open Touring Car. | ||
| View original record | To CWB. from Hs. 48230 Hs5/LG25.8.25. NEW PHANTOM OPEN TOURING CAR. X8770 48230 Referring to your wire stating that the New Phantom open touring car will be sent to Derby for new Exhaust System to be… | ||
| scan0067 | Telegram about sending an open touring Phantom for a new exhaust system. | ||
| View original record | POST OFFICE TELEGRAPHS K.8230 No. of Telegram 25 Office Stamp: DERBY * 25 AU Office of Origin and Service Instructions: 72 11.13 LONDON R 19 Words: 19 SENT At: 1320 To: ROYCAR DERBY Message: HIVES… | ||
| scan0068 | Telegram received by telephone regarding the dispatch of an open touring phantom for a new exhaust system. | ||
| View original record | RR 144A (EORKS.) (SK 871 23-5-23) MP 272631 X8230 ROLLS-ROYCE LTD. TELEGRAM RECEIVED BY TELEPHONE. Time Received 12-3 Date 25-8-25 To Raynans By Noa from London 11-13 Hives Sending John open touring… | ||
| scan0069 | Loss of power and speed on a 'Phantom' demonstration car after fitting a new silencer. | ||
| View original record | +8230 BJ15/DN1.9.25. TO Hs FROM BJ In regard to the new silencer on our "Phantom" Demonstration car, can you please let us know what is the loss of power and speed ? Cx. who has just given a trial… | ||
| scan0070 | Change from exhaust heating to water heating for the EAC carburetter on the New Phantom. | ||
| View original record | To Hs. from R. c. to CJ. BY. +8230 R3/M1.9.25. EAC. CARBURETTER - EXHAUST X.8080 HEATING VERSUS WATER HEATING. X.8230 With reference to the exhaust heating of the EAC. carburetter, I have come to the… | ||
| scan0071 | Power loss due to a silencer on vehicle 103-MC and recommending further testing. | ||
| View original record | X8230 To B.J. from Hs. 103-MC. X8950 X8230 Hs6/LG2. 9.25. I am not satisfied with the figures we have so far obtained of the loss due to the silencer as fitted to 103-MC. The tests are being repeated… | ||
| scan0072 | Noise levels and performance issues of car 103-MC compared to other models like the 'Phantom' and 'Silver Ghost'. | ||
| View original record | 48230 BJ4/DN2.9.25. TO Hs FROM BJ c. to CJ c. to CWB c. to PN c. to H c. to Cx 103-MC. We have tried this car with the new silencer, and find that it is more silent than 101-MC, which is our "Phantom"… | ||
| scan0073 | Noise levels and potential adoption of a modified exhaust silencer on car 103-MC. | ||
| View original record | To B.J. from Hs. c. to C.J. c. to CWB. +8230 Hs2/LG3.9.25. EXHAUST NOISE - 103-MC. +8950 Referring to BJ4/DN2.9.25. We agree that the modified exhaust fitted to 103-MC is not as silent as the Silver… | ||
| scan0074 | Modification to the exhaust heating system on the New Phantom model. | ||
| View original record | To Hs. from R. c. to CJ. c. to BY. 48230 RL/M4.9.25. NEW PHANTOM - EXHAUST HEATING. X. 8230 X. 8080 With regard to doing away with the exhaust heat on the Phantom throttle, would it be possible to get… | ||
| scan0075 | Requesting a comparison of a new exhaust system following tests. | ||
| View original record | X8230 BJ5/DN7.9.25. TO Hs FROM BJ EXHAUST NOISE - 103-MC. With reference to Hs2/LG3.9.25 - last paragraph - you will doubtless be letting me have the comparisons at the same time as you try the new… | ||
| scan0076 | Chasing a cure for exhaust noise and spitting in the silencer on the 'New Phantom' chassis. | ||
| View original record | Hs. PY. 48230 EP/Thn7/H10.9.25. re. "NEW PHANTOM CHASSIS" Exhaust Noise and Spitting in the Silencer. Further to our EP4/H12.8.25., we have been asked by BJ. to remind him weekly of the matter of… | ||
| scan0077 | The performance of an exhaust system fitted to car 103-MC. | ||
| View original record | R.R. 493A (50 H) (D.D. 31. 12-6-25) J.H.D. +8230 EXPERIMENTAL REPORT. Expl. No. REF: Hs3/LG11.9.35. To BJ: from Hs. EXHAUST SYSTEM FITTED TO 103-MC. +8950 The last time 103-MC was at Derby, we carried… | ||
| scan0078 | Road performance tests of a concentric tube silencer. | ||
| View original record | R.R. 493a (50 H) (D.D. 31, 12-6-25) J.H.B. EXPERIMENTAL REPORT. Expl. No. REF Hs/AJL/LG11.9.25. CONCENTRIC TUBE SILENCER AS FITTED TO 103-MC. Road performance. The following figures give particulars… | ||
| scan0079 | Comparison of exhaust noise and silencer performance between different vehicle models. | ||
| View original record | 48230 BJ7/DN11.9.25. TO Hs FROM BJ EXHAUST NOISE - 103-MC. With reference to Hs2/LG3/9.25, I have just been listening to 103-MC with the new exhaust and comparing it with a "Silver Ghost". So far as… | ||
| scan0080 | The exhaust noise of car 103-MC, comparing silencer options and performance against Phantom and Silver Ghost models. | ||
| View original record | R.R. 493a (50 H) (D.D. 31, 12-6-25) J.H.D. +8230 EXPERIMENTAL REPORT. Expl. No. REF: Hs4/LG12.9.25. To B.J. from Hs. EXHAUST NOISE ON 103-MC. +8950 +8230 When we had this car at Derby we made… | ||
| scan0081 | Effectiveness of a new silencer compared to the 'Silver Ghost' model and querying horsepower curve data. | ||
| View original record | -> To Hs. from BJ. Copy to... PN. BJ3/H14.9.25. X8230 Re EXHAUST NOISE: 103-MO. After writing BJ7/DN11.9.25, in which I mentioned that the latest silencer on this car seemed to be about as efficient… | ||
| scan0082 | Exhaust noise and silencer performance figures for car 103-MC. | ||
| View original record | 48230 To BJ. from Hs. c. to FN. Hs3/LG14.9.25. EXHAUST NOISE - 103-MC. 48950 With reference to BJ3/H14.9.25. The H.P. curves attached to Hs3/LGl1.9.25. are the figures for the silencer which is now… | ||
| scan0083 | Suggesting the inclusion of exhaust analysis in the testing of car and aero engines. | ||
| View original record | To Hs. from R. X8230 R2/M15. 9. 25. EXHAUST ANALYSIS. X. 8230 X. 4621 Regarding the testing of car and aero engines, we think it would be a good thing if we included an exhaust analysis in these… | ||
| scan0084 | Modifications to the exhaust silencer system for American 'Phantom' chassis cars. | ||
| View original record | To BJ/PY. from E. c. to Hs. 78230 E2/M16.9.25. RE. EXHAUST SYSTEM. AMERICAN CARS. X.3692 X.3436 X.8230 Referring to your memo. BY/PY19/WESS.9.25., this matter was raised some time ago at WW. and it… | ||
| scan0085 | Reducing exhaust noise in the Phantom model car by testing two different silencer designs. | ||
| View original record | R.R. 493A (50 H) (D.D. 91. 12-6-25) J.H.D. 48230 EXPERIMENTAL REPORT. Expl. No. REF: Hsl/LG16.9.25. 'PHANTOM' EXHAUST. To R. from Hs. c. to CJ. BJ. c. to RG. E. c. to DA. BY. c. to Wor. The exhaust… | ||
| scan0086 | Alternative silencer designs for the New Phantom model. | ||
| View original record | R.R. 493a (50 H) (D.D. 91. 12-6-25) J.H.D. EXPERIMENTAL REPORT. Expl. No. REF: HS/AJL/LG16.9.25. ALTERNATIVE SILENCERS FOR NEW PHANTOM. The following two silencers were made as laternatives to the… | ||
| scan0087 | The performance and design of various vehicle silencers. | ||
| View original record | R.R. 493A (50 H) (D.D. 31. 12-6-25) J.H.D. -2- EXPERIMENTAL REPORT. Expl. No. REF: Hs/AJL/LG16.9.25. this silencer. The over-all dimensions are the same as a standard silencer. The intermediate pipe… | ||
| scan0088 | Performance and power loss of different vehicle silencers. | ||
| View original record | contd :- -3- on either of these silencers. The addition of this gives no extra silence and tends to keep the exhaust gases hot at points where it is necessary to cool them down as much as possible. It… | ||
| scan0089 | Dynamometer graph comparing engine power curves with various silencer configurations. | ||
| View original record | COMPARATIVE SILENCER POWER CURVES (DYNAMOMETER) MODIFIED SILENCER MADE UP AS FOLLOWS:- 63 HOLES .312" DIA IN INTERMEDIATE TUBE ROAD WHEEL B.H.P. ENGINE R.P.M. CUT OUT OPEN. STANDARD SILENCER. MODIFIED… | ||
| scan0090 | Comparing a 'Phantom' small diameter aluminium induction pipe and water-heated hot spot against the standard system. | ||
| View original record | R.R. 493A (50 M) (D.D. 31. 12-6-25) J.H.D. EXPERIMENTAL REPORT. Expl. No. +8230 REF HS/ACL2/LG18.9.25 To R. from Hs/ACL. c. to CJ. BJ. c. to RG. E. c. to DA. BY. c. to Wor. 'PHANTOM' SMALL DIA.… | ||
| scan0091 | Confirming drawings for the 'Phantom' exhaust system have been sent to Springfield. | ||
| View original record | 48230 To E. from Hs. c. to BY/Py. Hs7/LG18.9.25. 'PHANTOM' EXHAUST SYSTEM. E2/M16.9.25. Drawings of the above have been sent to Springfield. Hs. | ||
| scan0092 | New silencer design for the exhaust system which, while quiet, causes considerable loss of power. | ||
| View original record | To Hs. from BJ. Copy to CWB. (struck through) BJ5/H24.9.25. +8230 EXHAUST SYSTEM. Hs3/LG11.9.25. The last form of silencer fitted to 108-MC appears to be satisfactory as regards silence, but it is… | ||
| scan0093 | Significant power loss caused by the Phantom concentric tube silencer. | ||
| View original record | COPY. BJ. OWB10/LH22.9.25. PHANTOM EXHAUST. CONCENTRIC TUBE SILENCER. It is considered that in view of the obvious advantages of this silencer over the present standard, as regards the quietness of… | ||
| scan0094 | Performance and design of the Phantom exhaust system silencer. | ||
| View original record | To B.J. from Hs.. +8230 Hs4/LG25.9.25. 'PHANTOM' EXHAUST SYSTEM. X 8230 X 3436 BJ5/H24.9.25. The position of the silencer is - we have reported to R.+ that we are now waitingfor a design from WW. The… | ||
| scan0095 | Testing and urgent implementation of a new, quieter silencer for the 'New Phantom' exhaust system. | ||
| View original record | 48230 To H. from B.J. Copy to.... Hs. BJ6/H28.9.25. "NEW PHANTOM" EXHAUST SYSTEM. As we understand Hs. is seeing you this week, and you will doubtless be discussing the above matter, we would mention… | ||
| scan0096 | Power loss associated with the Phantom Exhaust Concentric Tube Silencer. | ||
| View original record | COPY OF MEMORANDUM FROM CWB. TO BJ. (CWB10/LH22.9.25). PHANTOM EXHAUST. CONCENTRIC TUBE SILENCER. It is considered that in view of the obvious advantages of this silencer over the present standard, as… | ||
| scan0097 | Cancelling a previous document to be replaced with an attached re-written version regarding the 'New Phantom' exhaust system. | ||
| View original record | 48230 To Hs. from BJ. BJ7/H29.9.25. "NEW PHANTOM" - EXHAUST SYSTEM. Will you please cancel BJ6/H28.9.25 on the above subject. This has been re-written and now reads as attached, BJ6/H29.9.25. B.J. PS.… | ||
| scan0098 | Testing and urgent standardisation of a new silencer for the 'New Phantom' exhaust system. | ||
| View original record | To R. from BJ. Copy to... Hs. BJB/H29.9.25. "NEW PHANTOM" EXHAUST SYSTEM. As we understand Hs. is seeing you this week, and you will doubtless be discussing the above matter, we would mention that we… | ||
| scan0099 | Design modifications for the Phantom Silencer. | ||
| View original record | X. 8230 To Hs. from E. c. to CJ. BY. E1/M5.10.25. RE. PHANTOM SILENCERS. Regarding your visit to WW. on Friday last, I return herewith the blue print you brought of the concentric tube silencer, with… | ||
| scan0100 | Testing and production of a new silencer for the 'New Phantom' exhaust system. | ||
| View original record | X8230 To Hs. from BJ. BJ1/H5.10.25. "NEW PHANTOM" EXHAUST SYSTEM. I attach a copy of Rl/M2.10.25. We presume this latest silencer is being tested on the 10,000 miles test in France so that a… | ||
| scan0101 | Challenges of making the Phantom's exhaust system as quiet as the Silver Ghost's. | ||
| View original record | COPY OF R1/M/2.10.25. PHANTOM EXHAUST SYSTEM Referring to your BJ6/H29925, we have a more power ful engine which is exhausting more and hotter gas, and we cannot expect to get it as silent as the… | ||
| scan0102 | Correcting a typing error in a previous communication regarding the 'New Phantom' exhaust. | ||
| View original record | Y8230 5.10.25. U Mr. Hives, Derby. Re BJ1/H5.10.25. "NEW PHANTOM" EXHAUST. There is an obvious error in the last paragraph of my memorandum, reference as above, which I typed hurriedly for the bag… | ||
| scan0103 | Urgent introduction of a new, quieter exhaust system for the 'New Phantom' to replace the noisy standard version. | ||
| View original record | x8230 To Wor. from BJ. Copy to..... R. Hs. BF. BJ5/H9.10.25. (Dict. 8th). "NEW PHANTOM" EXHAUST SYSTEM. After yesterday's conference I was informed by Hs. and By. that in their opinion the latest… | ||
| scan0104 | Development of a new exhaust system and modified silencer for the Phantom model. | ||
| View original record | 48230 To B.J. from Hs. Hs6/LG5.10.25. NEW PHANTOM EXHAUST SYSTEM. 48940a This matter was discussed with R. No final decision was reached. It was left that Fe. would send on drawings for a modified… | ||
| scan0105 | Investigating an objectionable exhaust noise on the New Phantom chassis and the proposed modification to fix it. | ||
| View original record | R.R. 493A (50 H) (D.D. 31, 12-6-25) J.H.D. EXPERIMENTAL REPORT. Expl. No. 48230 REF: HS/AJL2/LG121025. To R. from HS/AJL. c. to CJ. BJ. c. to RG. E. c. to DA. BY. c. to Wor. RE. PHANTOM EXHAUST. 48230… | ||
| scan0106 | The effects of shortening an exhaust pipe, including comparative performance data. | ||
| View original record | R.R. 498A (50 H) (D.D. 31, 12-6-25) J.H.L. EXPERIMENTAL REPORT. -2- Expl. No. REF HS/AJL2/LG121025 is no disadvantage, the slight increase being possibly caused by some other outside influence. Owing… | ||
| scan0107 | Modifications and material suggestions for the Phantom silencer, including a proposal from Mr. Royce. | ||
| View original record | X. 8230 To BY. from E. c. to CJ. Hs. E2/M12.10.25. PHANTOM SILENCER. We send you herewith drawing LeC.2153., shewing the rear silencer modified to incorporate the 2nd. concentric tube. The fittings at… | ||
| scan0108 | Improving the Phantom exhaust system, suggesting a smaller aluminium silencer to be tried. | ||
| View original record | X. 8230 To CJ. from R. c. to BJ. BY. c. to E. HS. R10/M13.10.25. PHANTOM EXHAUST SYSTEM. We have to improve the efficiency of the exhaust system. The only way I know is to increase the capacity or… | ||
| scan0109 | The urgent fitting of a new silencer to a 'New Phantom' vehicle. | ||
| View original record | S/W. Hs. Y8230 Bt2/EP/16.10.25. Dict. 15/10. re :- Silencer for "New Phantom". With reference to attached copy of BJ9/H14.10.25, H. has now instructed me to take immediate steps to have a new silencer… | ||
| scan0110 | The new silencer for the 'New Phantom', its fitting to company cars, and policy regarding existing customers. | ||
| View original record | (COPY) To PN. } from BJ. H. } C. } BJ9/H14.10.25. Sg. } SILENCER FOR "NEW PHANTOM". Now the Works have produced a satisfactory silencer for Phantoms, please arrange for this to be fitted on all our… | ||
| scan0111 | Noisy exhaust of the New Phantom and the urgent need for a new silencer to prevent losing orders. | ||
| View original record | To Hs. from BJ. Copies to By. Sg. Wor. X8230 BJ8/H23.10.25. SILENCER FOR NEW PHANTOM. With reference to BY16/K21.10.25, our position is as follows:- 1. Rolls-Royce cars sell to a great extent on… | ||
| scan0112 | Design, testing, and implementation of a new silencer for the New Phantom model. | ||
| View original record | 48230 BY23/H. 27.10.25. ------------------- SILENCER FOR NEW PHANTOM. ----------------------- Referring to BJ8/H. 23.10.25. I have discussed the memo in question with Hs. and Wor, and the position in… | ||
| scan0113 | Cost-effectiveness of dismantling and rebuilding silencers versus building new ones. | ||
| View original record | - 2 - 4 Contd. They expressed the opinion that it was not possible, and that whilst it might be possible, it certainly would not pay. It would take too long to dismantle the existing silencers in a… | ||
| scan0114 | Conference discussing the replacement of the standard silencer with a new, easier-to-make design for the 'New Phantom'. | ||
| View original record | To BY. from BJ. 18230 Copies to...Wor Hs. PN. GWB. SILENCER FOR "NEW PHANTOM". We had a conference with R. this morning, and asked whether he saw any objection to our using the silencer which is now… | ||
| scan0115 | Testing a new silencer for the New Phantom model and forwarding a list of cars requiring it. | ||
| View original record | To B.J. from Hs. c. to BY. c. to WOR. H8230 Hs2/LG11.11.25. NEW PHANTOM - SILENCER. Referring to BJ2/H10.11.25. We shall have the first of the new silencers on test tomorrow. In two or three days time… | ||
| scan0116 | Confirmation of an agreement to cut down an intermediate exhaust pipe and a query to the Experimental department about retaining a nozzle. | ||
| View original record | X8230 Mr. Hs. C. BY/SS. BY9/H. 11.11.25. I wish to confirm that we are in agreement with cutting down the intermediate exhaust pipe which projects into the front silencer until it is enclosed in the… | ||
| scan0117 | Seeking permission to instruct the Works to manufacture parts for 'New Phantom' silencers. | ||
| View original record | To BJ. C. Hs. C. WOR. 48230 BY2/K. 13.11.25. "NEW PHANTOM" SILENCERS. Referring to BJ2/H.10.11.25., and Hs's reply reference Hs2/LG11.11.25., we can instruct the Works to make all the necessary parts… | ||
| scan0118 | The alteration of the carburetter and induction pipe heating. | ||
| View original record | To R. from B.J. Copies to Hs. By. X8230 BJ6/H18.11.25. Carburetter and Induction Pipe Heating. I attach a copy of CWB12/LH13.11.25, which you may find of interest at any time you may be considering… | ||
| scan0119 | Difficulties with carburetter and induction pipe heating and proposing a hybrid solution. | ||
| View original record | COPY OF MEMORANDUM CWB12/LH13.11.25. CJ. c. to BJ. CARBURETTER AND INDUCTION PIPE HEATING. Certain difficulties have appeared in the working of the present system of carburetter or induction pipe… | ||
| scan0120 | The operation of the carburetter system, focusing on exhaust and water heating during startup. | ||
| View original record | -2- connection from the exhaust to this latter jacket, and, if necessary, a valve in the main exhaust for choking purposes would be inter-connected with the starter carburetter control, so that the… | ||
| scan0121 | The performance of a modified silencer for the Phantom model. | ||
| View original record | R.R. 493A (50 H) (D.D. 31, 12-6-25) J.H.D. Expl. No. +8230 REF: Hs12/LG23.11.25. EXPERIMENTAL REPORT. To R. from Hs. c. to CJ. BJ. c. to RG. E. c. to DA. BY. c. to Wor. SILENCER FOR PHANTOM. We find… | ||
| scan0122 | Petrol consumption and proposing experiments to improve efficiency by heating the throttle or carburetter air intake. | ||
| View original record | H8230 To HS. from R. c. to CJ. BJ. RA/M25.11.25. PETROL CONSUMPTION. X.459 X.8080 X.8230 Please thank Mr. Robotham for his very able and complete report on petrol consumption. It has been worrying me… | ||
| scan0123 | Comparative silencer tests for the New Phantom model. | ||
| View original record | R.R. 493A (50 H) (D.D. 34. 12-6-25) J.H.D. 48230 EXPERIMENTAL REPORT. Expt. No. REF: Hs/AJL/LG27.11.25 To R. from Hs/AJL. c. to CJ. BJ. c. to RG. E. c. to DA. BY. c. to Wor. COMPARATIVE SILENCER TESTS… | ||
| scan0124 | Comparing the performance of different vehicle silencers in terms of noise and power. | ||
| View original record | R.R. 493A (50 H) (D.D. 31. 12-6-25) J.H.D. EXPERIMENTAL REPORT. -2- Expl. No. REF:Hs/AJL/LG27.11.25 are diverted owing to this method of spacing the baffles. SILENCE. Silencer No.1. was found to be… | ||
| scan0125 | Modification to a silencer assembly due to expansion issues found during testing. | ||
| View original record | R.R. 493A (50 H) (D.D. 31. 12-6-25) J.H.D. EXPERIMENTAL REPORT. -3- Expl. No. REF: HS/AJL/LG27.11.25. CONSTRUCTION. 4 BAFFLE PLATES EQUALLY SPACED 9.066 A 27.2" 29.2" ( LENGTH OF SHELL ) The above… | ||
| scan0126 | Graph showing power curves from comparative silencer tests. | ||
| View original record | COMPARATIVE SILENCER TESTS - POWER CURVES ROAD WHEEL B.H.P. ENGINE R.P.M. Graph Labels: CUT-OUT OPEN STD SILENCER No I No III PARTICULARS OF SILENCERS Nº I:- CONCENTRIC TUBE SILENCER FITTED WITH 3… | ||
| scan0127 | New silencer for the New Phantom model. | ||
| View original record | S/W. H.S. from C.W.B. X830 CWB4/LP/2.12.25. re:- New Silencer for New Phantom. Please see attached (CWB5/LP/30.11.25) and take such action as is necessary. C.W.B. CWB | ||
| scan0128 | Test report comparing a proposed new silencer against the standard one for the New Phantom chassis. | ||
| View original record | CWB5/EP/30.11.25. To BJ. from CWB. c. to Pn. c. to H. re:- New Silencer for New Phantom. BJ., CWB., with EP. and Works' officials made a test of the latest form of the proposed new silencer for the… | ||
| scan0129 | Requesting details about a modified exhaust silencer for cost estimation purposes. | ||
| View original record | To HS from My/Rns. X8230 My/Rns15/N/139/BJ.3.12.25. Standardisation of Chassis Parts. Modified Exhaust Silencer. X.No.8230. Please let us know what this modification consists of, as there are schemes… | ||
| scan0130 | Persistent and annoying squeak from the butterfly exhaust valve on the New Phantom model. | ||
| View original record | To Hs. from BJ. Copy to PN. BJ9/H4.12.25. 48230 Butterfly Exhaust Valve on New Phantom. The following is a copy of memorandum PN4/DN2.12.25:- "It appears inevitable, in spite of frequent oiling, that… | ||
| scan0131 | The difficulties with the butterfly exhaust valve on the New Phantom and Silver Ghost models. | ||
| View original record | R.R. 493A (50 H) (D.D. 31. 12-6-25) J.H.D. EXPERIMENTAL REPORT. Expl. No. X8230 REF hsl/LG5.12.25. To BJ. from Hs. c. to PN. BUTTERFLY EXHAUST VALVE ON NEW PHANTOM. X8230 BJ9/H4.12.25. The… | ||
| scan0132 | Inquiring about the test results for the New Phantom silencer and its subsequent fitting to demonstration cars. | ||
| View original record | X8230 -> To Hs. from BJ. Copies to..Wer. By. BJ11/H7.12.25. NEW PHANTOM SILENCERS. We shall be glad to hear so soon as the New Phantom silencer which I passed recently at Derby has passed its tests… | ||
| scan0133 | The New Phantom Silencer, confirming test completion and recommending production. | ||
| View original record | R.R. 493A (50 H) (D.D. 31. 12-6-25) J.H.D. EXPERIMENTAL REPORT. Expl. No. X8230 REF: Hs4/L09.12.25. To BJ. from Hs. c. to WOr. c. to HY. NEW PHANTOM SILENCER. The experimental tests of this silencer… | ||
| scan0134 | Standardisation of chassis parts for a modified exhaust silencer to reduce noise. | ||
| View original record | RR 755 (10M) (SL391 2-11-23) MP 281297 Hs 48230 COMPLETED 10.12.25 STANDARDISATION of CHASSIS PARTS. Date 2.12.25. Description of Parts. MODIFIED EXHAUST SILENCER. Origin. To reduce amount of exhaust… | ||
| scan0135 | Works order for the supply of a new type silencer for chassis 66-MC, despatched to Cricklewood. | ||
| View original record | RR 615A (30H) (DD80 1-7-25) MP 320374 M Johnes Rodp R5915 WORKS ORDER NO. X9230 CHASSIS NO. 66-MC. Customer's Order No. KWT4/M/17/12/25 Type of Chassis or Engine Owner's Name Mr. Plevins Customer… | ||
| scan0136 | Schemes for improving carburation by increasing the temperature of water to the throttle valve and carburetter. | ||
| View original record | To Hs. } To BY. } FROM R. c. to CJ. BJ. RG. Mr. Claremont. +8230 R1/M17.12.25. RE. CARBURATION. X.766 X.8080 X.8230 I have suggested a scheme for increasing the temperature of water to the throttle… | ||
| scan0137 | The cost increase for a modified exhaust silencer, to be attached to Standardisation Sheet X. 8230. | ||
| View original record | To R. and E. from Hs. c. to CJ. and BJ. c. to DA. RG. c. to BY. Wor. c. to EP. FM. c. to Hm. Wd. c. to TR (Sales). 78230 Hs/I.G23.12.25. STANDARDISATION SHEET. X. 8230. MODIFIED EXHAUST SILENCER. Will… | ||
| scan0138 | Standardisation of a bracket for the rear silencer to reduce weight and cost. | ||
| View original record | STANDARDISATION of CHASSIS PARTS. Description of Parts: BRACKET FOR REAR SILENCER. Origin: To reduce weight and cost. Experimental Test Report: The bracket for rear silencer is made in sheet metal in… | ||
| scan0139 | Exhaust pipe failures and distortions on a Phantom model during testing. | ||
| View original record | Expl: Report. Expl: No. V8230 Ref. Hs/GWH/LG27.1.26. To R. from Hs/GWH. c. to CJ. BJ. c. to E. RG. c. to DA. BY. c. to Wor. RE. EXHAUST PIPES ON PHANTOM. XR940a We have never yet been able to complete… | ||
| scan0140 | Stress-related failures in exhaust pipes and the unreliability of sliding joints. | ||
| View original record | contd :- -2- to its position by the two dowel pins. The lug nearest centre of engine is first broken off and dowel pin is sheared off level with cylinder face. (This happens whether the sliding joint… | ||
| scan0141 | Blueprint showing failures, cracks and breakages, on Phantom exhaust pipes. | ||
| View original record | PHANTOM EXHAUST PIPES CRACKS BREAKS OFF ROLLS-ROYCE, LIMITED PRINT ROOM 27 JAN 1926 DERBY. SJH. 26.1.26 | ||
| scan0142 | Query about fitting asbestos and alum lagging sheets to the improved rear silencer on the 40/50HP chassis. | ||
| View original record | To Hs. Y8230 BY/SS12/DB.4.2.26. Re 40/50HP Chassis - Exhaust Fittings. Sec:5230. Improved Rear Silencer. The question has been raised regarding the fitting of rear lagging sheets to the improved… | ||
| scan0143 | Recommendation to replace the thin sheet aluminium silencer lagging with a more durable rustless material. | ||
| View original record | To BY. from Hs. X8230 Hs5/LG8. 2. 2. 26. SILENCER LAGGING. X3003 The thin sheet aluminium used on the silencers is not very durable. We recommend that the next car we send to run 10,000 miles, the… | ||
| scan0144 | Arrangement and fitting of a superheat hot spot for car 44-PK. | ||
| View original record | To RHC. from Hs/ACL. X8230 Hs/ACL/LGS. 2. 26. X8230 SUPERHEAT HOT SPOT FOR 44-PK. The attached sketch shews arrangement of superheat hot spot. It is very similar to the one used on the test bench… | ||
| scan0145 | Instruction to replace the aluminium silencer lagging with 'Staybrite' material on the New Phantom. | ||
| View original record | 48230 BY/SS. c. HS. BY7/H. 10.2.26. NEW PHANTOM. SILENCER LAGGING. Kindly order/up a piece of lagging to cover the front end of the silencer in place of the present aluminium piece, in "Staybrite".… | ||
| scan0146 | Superheated hot spot for the Phantom engine. | ||
| View original record | Expl: Report. Expl: No. 48230 Ref: Hs/ACL/LG12. 2.26. To R. from Hs/ACL. c. to CJ. BJ. c. to RG. E. c. to DA. BY. c. to OY. Wor. X8080 EXPERIMENTS WITH SUPERHEATED HOT SPOT ON PHANTOM ENGINE. The… | ||
| scan0147 | Continued explanation of temperature differences in engine induction and exhaust systems. | ||
| View original record | contd :- -2- to the considerable difference in temperature existing over various parts of the hot spot and even the maximum and minimum temperature positions did not correspond for the water and… | ||
| scan0148 | The performance of different heating mediums for a hot spot jacket, including test data on water flow. | ||
| View original record | contd :- -3- During the same tests we recorded the inlet and outlet temperatures of the heating medium passing through the hot spot jacket - ie. water, steam and exhaust gas for the three systems. We… | ||
| scan0149 | Report page detailing experiments on engine heating from cold and the effects of a superheated system on cylinder jacket water. | ||
| View original record | contd :- -4- before a driver can engage top gear when starting away with a cold engine. The above however puts forward some of the difficulties encountered in endeavouring to give a quantitative… | ||
| scan0150 | Graph and analysis of hot spot temperature changes over time under light running conditions. | ||
| View original record | contd :- [Graph] Title: INCREASE OF HOT SPOT TEMP WITH TIME 1000 R.P.M. LIGHT RUNNING SUPERHEAT HOT SPOT Y-axis: EVERAGE HOT SPOT TEMP °C X-axis: TIME FROM START (MINS) Data series: 3.5 PTS/HR, 6.66… | ||
| scan0151 | Page analyzing the increase of induction pipe temperatures after starting from cold, comparing superheated, standard exhaust heated, and water-heated systems. | ||
| View original record | contd :- -6- INCREASE OF INDUCTION PIPE TEMPERATURES AFTER STARTING FROM COLD. Graph Data: Y-axis: TEMP oC X-axis: TIME FROM START Lines: SUPERHEATED, STD EXH HEATED, AIR TEMP, WATERHEATED These… | ||
| scan0152 | Comparative analysis with a graph showing temperature increase over time for three different 'hot spot' systems. | ||
| View original record | contd :- -7- COMPARATIVE CURVES FOR 3 SYSTEMS. AVERAGE TEMP RELATIVE TO STARTING TEMP STD HOT SPOT BUTTERFLY VALVE IN EXH. PIPE SHUT SUPERHEAT HOT SPOT SIMPLE WATER HEATED HOT SPOT TIME FROM START… | ||
| scan0153 | The working temperatures of standard exhaust and water heated systems at full throttle, including a performance graph. | ||
| View original record | contd :- -3- to either of the other two. Further tests we have made are given later - these go to prove that the temperature rise of the standard exhaust heated system is greater than the other two,… | ||
| scan0154 | Report page detailing engine test results on induction pipe temperatures and the influence of hot spot temperature on power and efficiency. | ||
| View original record | contd :- -9- | | Std. exh. Heated. | Water heated. | Superheated. | |---|---|---|---|---|---|---| | R.P.M. | Indn pipe temp. °C. | Air °C. | Indn pipe temp. °C. | Air °C. | Indn pipe temp. °C. | Air… | ||
| scan0155 | Technical analysis of engine performance tests comparing different hot spot systems and their effect on consumption and torque. | ||
| View original record | contd :- -10- The method of making the test was varying the mixture strength over approx. its maximum range of steady running and observing the corresponding values of the torque and consumption. The… | ||
| scan0156 | Performance graph and analysis comparing fuel consumption against B.M.E.P. for different engine heating systems at 750 RPM. | ||
| View original record | contd :- -11- 750. R.P.M. AIR TEMP 33 To 40 °C BAROMETER 754 M.M. Pts/B.H.P./Hour. WATER HEATED SUPERHEATED. STD EXH HEATED. B.M.E.P. lbs/□" GAIN IN ECONOMY (Max) By STD HOT SPOT. MAX mP. A.S.L. The… | ||
| scan0157 | Graph and analysis comparing engine fuel consumption under different heating systems. | ||
| View original record | contd :- -12- [Graph Text] SPEED 1500 R.P.M. AIRTEMP 33-38 °C BAROMETER 751 M.M Y-Axis: PTS/B.H.P./HOUR. X-Axis: B.M.E.P. lbs/D'' Curve Labels: STD EXH HEATED WATER HEATED SUPERHEATED [Main Text] The… | ||
| scan0158 | Report page detailing tests on engine heating systems, focusing on heat transfer to jacket water and absorption by the charge. | ||
| View original record | contd :- -13- by the other systems, though probably not in proportion to the temperatures shown. It follows therefore from curve No.3. - showing the temperature rise of the heating medium - and in… | ||
| scan0159 | Technical report page with a graph and analysis of heat transfer in an engine cooling system and carburetter. | ||
| View original record | contd :- -14- [Graph] Y-axis: B.T.Us/MIN. X-axis: R.P.M. Data series 1: HEAT GIVEN TO CARB. WATER BY EXH. BOILER. Data series 2: HEAT ADDED TO COOLING WATER. Data series 3: HEAT DEDUCTED BY CARB. [End… | ||
| scan0160 | Experiments investigating the influence of hot spot temperature on engine detonation, including a related graph. | ||
| View original record | contd :- -15- [Graph Title] HEAT ADDED As %AGE Of HEAT GIVEN TO WATER BY CYLINDERS. [Graph Y-axis] %AGE INCREASE [Graph X-axis] R.P.M. INFLUENCE OF HOT SPOT TEMPERATURE ON DETONATION. All the… | ||
| scan0161 | The influence of fuel volatility on the time taken for an engine to operate evenly from a cold start. | ||
| View original record | contd :- -16- INFLUENCE OF THE VOLATILITY OF THE FUEL ON TIME TAKEN FOR ENGINE TO OPERATE EVENLY. The volatility of the fuel naturally has considerable influence on the time taken before the motor… | ||
| scan0162 | Comparison of standard exhaust, superheated, and water-heated hot spot systems and their effects on engine performance. | ||
| View original record | contd :- -17- in France was fitted with a water heated hot spot and this car was found to suffer more from piston knocks after its test than any of the previous cars equipped with standard hot spots.… | ||
| scan0163 | Analysis of the disadvantages of a standard system, focusing on issues with the exhaust throttle valve and potential overheating. | ||
| View original record | contd :- -18- DISADVANTAGE OF THE STANDARD SYSTEM. The only disadvantage that we can see possessed by the standard system is trouble with the exhaust throttle valve which certainly works under very… | ||
| scan0164 | Schematic of apparatus for testing a superheated throttle and measuring water flow. | ||
| View original record | APPARATUS USED FOR TESTING SUPERHEATED THROTTLE. INDUCTION PIPE TEMP. HOT SPOT INLET TEMP. HOT SPOT WATER OUTLET TEMP. REGULATING TAP. HEATING SURFACE = 75.4 ☐" PUMP 12" A.C.L. MEASURING WATER FLOWS.… | ||
| scan0165 | Experiments and suggestions for heating the throttle on the Phantom model. | ||
| View original record | Hs. } FROM R. To E. } LE CANADEL. BY. } c. to CJ. BJ. Wor. RG. DA. 1830 R1/M19.2.26. X.8230 X.8080 X.8020 X.8070 PHANTOM - HEATING THROTTLES. I have suggested superheating the water by boiler on… | ||
| scan0166 | Engine water jacket cooling, boiling water temperatures, and exhaust-heated throttles. | ||
| View original record | shntd :- -2- should admit the water to the jacket. If there is risk of this blocking up let it be protected with 1/100 gauge - i.e. find out what happens if the water is entirely shut off, that is… | ||
| scan0167 | Testing a Phantom cylinder head with opposed sparking plugs to investigate detonation and silencer popping. | ||
| View original record | To Hs. from E. c. to CJ. R. c. to RG. BY. X8230 E3/M23. 2. 26. RE. PHANTOM CYLINDER HEAD WITH OPPOSED SPARKING PLUGS. X. 8230 X. 8070 X. 8050 The above cylinder head has been tested on the bench and… | ||
| scan0168 | Irritating noise and driveability issues with the 'New Phantom' model. | ||
| View original record | To Hs. from BJ. X8230 BJ4/D5.3.26. Re: "New Phantom". I attach copy of my BJ2/D2.3.26 and CWB's reply. Please let us know whether you consider we should put this matter before Mr. Royce, as we look on… | ||
| scan0169 | Exhaust popping fault in a 40/50 HP demonstration car and seeking feedback on Phantoms. | ||
| View original record | To CWB. from BJ. BJ2/D2.3.26. Our Open Demonstration 40/50 H.P. Car pops badly in the exhaust whenever the foot is moved from the accelerator and the clutch left engaged, unless the hand-throttle is… | ||
| scan0170 | Technical report discussing the issue of exhaust popping on the 'New Phantom' model. | ||
| View original record | COPY. To B.J. CWB8/DN4.3.26. "New Phantom" popping in exhaust. I find it is impossible to prevent popping in the exhaust on "New Phantoms" when over-running unless the throttle is kept shut. Even when… | ||
| scan0171 | The issue of 'popping' in the exhaust on the New Phantom model. | ||
| View original record | To BJ. from Hs. X8230 Hs2/LG6.3.26. POPPING IN THE EXHAUST ON NEW PHANTOM. X8230 X93 In regard to the popping in the exhaust, it is all a question of degree. We do not know how to make a car with the… | ||
| scan0172 | And handwritten note concerning exhaust explosions in the New Phantom model. | ||
| View original record | EXTRACT FROM MEMORANDUM GWB11/DN8.3.26. Re 11-EX. During 50,000 miles running of this car, I found that normally explosions did not occur in the silencer when over-running, but that from time to time… | ||
| scan0173 | Investigation into the problem of detonation in Phantom engines, identifying a lack of turbulence as the likely cause. | ||
| View original record | To R. from Hs/ACL. c. to CJ. BJ. c. to RG. E. c. to DA. BY. c. to War. OY. X8230 Hs/ACL1/LG11.3.26. DETONATION ON PHANTOM ENGINES. X93 X8230 We have recently been investigating the problem of… | ||
| scan0174 | Analysis of Phantom engine performance, comparing it to the Silver Ghost, focusing on fuel consumption, self-ignition, and detonation issues. | ||
| View original record | contd :- -2- (1) Under full throttle conditions the Phantom engine is 16% better for petrol consumption than the Silver Ghost under similar conditions. On the road we are not satisfied that we get the… | ||
| scan0175 | Report page discussing engine detonation, the effects of ignition plugs, and the influence of engine speed and I.M.E.P. | ||
| View original record | contd :- -3- jackets and find that if anything it is slightly less than when we run on benzol which eliminates detonation. During this test it was found that if we fitted ignition plugs which cause… | ||
| scan0176 | Engine detonation tests and the introduction of a new cylinder head for the Phantom model. | ||
| View original record | contd :- -4- there has been any appreciable downward movement of the pistons. During the tests we tried the effect of different air temperatures to the carburetters. The temperature was varied from… | ||
| scan0177 | Inquiring about the frequency of exhaust explosions in New Phantom cars. | ||
| View original record | COPY OF MEMORANDUM BJ5/H17.3.26. To PN.) from BJ. H.) Bt.) BJ5/H17.2.26. EXHAUST EXPLOSIONS IN NEW PHANTOM. What is your experience with New Phantom cars as regards explosions in the exhaust - that is… | ||
| scan0178 | Issue of exhaust explosions in the new Phantom car, comparing it to the Silver Ghost model. | ||
| View original record | COPY OF MEMORANDUM Bt1/IN/17.3.26. Y EXHAUST EXPLOSIONS IN NEW PHANTOM CAR. In reply to your questions in BJ5/H17.3.26. My experience is that it is the rule to get these explosions. They are minimised… | ||
| scan0179 | Issue of popping in the exhaust on the New Phantom model. | ||
| View original record | COPY OF MEMORANDUM Hs2/LG6.3.26. To BJ. from Hs. POPPING IN THE EXHAUST ON NEW PHANTOM. In regard to the popping in the exhaust, it is all a question of degree. We do not know how to make a car with… | ||
| scan0180 | Issue of popping and spitting in the exhaust of the New Phantom model, focusing on the governor control. | ||
| View original record | COPY. To BJ. CWB9/DNS.3.26. FROM CWB. NEW PHANTOM. POPPING IN EXHAUST. Reference to previous correspondence on this matter and particularly to hs2/LGG.3.26, both the alterations referred to in this… | ||
| scan0181 | Alterations made to address exhaust popping in the New Phantom model. | ||
| View original record | COPY OF CWB8/DN10.3.26. To EH. from CWB. New Phantom Popping in Exhaust. Both the alterations, ile., the new silencers and improved ball bearing governor control, are fitted to both Riviera cars and… | ||
| scan0182 | Issue of exhaust popping in the New Phantom model when over-running. | ||
| View original record | COPY OF CWB8/DN4.3.26. To BJ. from CWB. NEW PHANTOM POPPING IN EXHAUST. I find it is impossible to prevent popping in the exhaust on New Phantoms when over-running unless the throttle is kept shut.… | ||
| scan0183 | Customer complaints about continuous and irritating popping in the exhaust of the New Phantom model. | ||
| View original record | X. 8230 Extract from BJ3/H17.3.26. X. 8350. Popping in Exhaust of New Phantom. 2. Popping in the Exhaust of New Phantom 'B'. I enclose copy of correspondence concerning this. Briefly, the position is… | ||
| scan0184 | Potential causes and solutions for firing in the exhaust of the Phantom model. | ||
| View original record | To Hs. E. } FROM R. BY. RG. } LE CANADEL. c. to CJ. BJ. X8230 [handwritten] R1/M30.3.26. PHANTOM - FIRING IN THE EXHAUST. X. 8230 X. 8080 I gave some of my views to Mr. Robotham when he was here: they… | ||
| scan0185 | Proposal to experiment with a magnetic oxide coating as an anti-corrosion method for exhaust systems. | ||
| View original record | X8230 HS. RHC. BY6/H. 16.4.26. I wish to try out another method of protecting the exhaust system against corrosion. At present we are experimenting upon:- a/- Calorized Mild Steel tubes. b/-… | ||
| scan0186 | 900°C heat treatment process to prevent staining on steel and cast iron parts by creating a magnetic oxide layer. | ||
| View original record | - 2 - treatment to approximately 900°C. I am inclined to think this is the process used by the people I am in touch with, who are responsible for the protection of huge quantities of mild steel parts… | ||
| scan0187 | Information regarding a potential cure for a squeaking exhaust butterfly valve on a 40/50 HP model. | ||
| View original record | X8230 BY: Hs. EP5/H22.4.26. re. 40/50 HP. Exhaust Butterfly Valve Squeaking Further to our EP4/H15.4.26. we have now received information from 'N' reading as follows:- "The makers of Graphol are… | ||
| scan0188 | Causes of explosions in a car's silencer, referencing the Phantom model. | ||
| View original record | TO HS. FROM R. EP C. 'to Wor. BY. BJ. Rg. E. X8230 R4/M18.5.26. re. EXPLOSIONS IN SILENCER. -X.93. 78080 7.EX. is a particularly good car for this, and there are reasons to believe that explosions in… | ||
| scan0189 | The 7-EX engine's performance, specifically discussing firing in the exhaust, self-ignition, and carbon build-up after 8,600 miles. | ||
| View original record | To Hs. from R. c. to BJ. Wor. c. to RG. CWB. c. to BY. PN. X8230 R6/M4.6.26. 7-EX - FIRING IN EXHAUST ETC. X. 8040 X. 8230 X. 699 X612 X.93 7-EX has run 8,600 miles mostly in France I think without… | ||
| scan0190 | Delays and design modifications for the Lightened Phantom Engine, specifically the induction and petrol drainage pipes. | ||
| View original record | To BY. from E. c. to BJ. Hs. 78230 E1/M9.6.26. RE. LIGHTENED PHANTOM ENGINE. X.8840 X.8870 X.8230 In reply to your BY3/H3.6.26., we regret that the remaining schemes for the lightened Phantom engine… | ||
| scan0191 | Preference for a water-heated throttle over an exhaust pipe valve and suggesting further tests. | ||
| View original record | To Hs. from R & E. c. to BJ. BY. PN. X8230 R1/M11.6.26. RE. WATER HEATED THROTTLE. X. 8230 X. 8060 I cannot help thinking that the water heated throttle is, all things considered, better than having a… | ||
| scan0192 | Mr. Royce's proposals for modifications to the water-heated throttle system. | ||
| View original record | To Hs. from E. c. to BJ. 48230 E1/M12.6.26. WATER HEATED THROTTLE. X. 8230 X. 8060 Further to memo. R1/M11.6.26., Mr. Royce would like you to try an inner extension on the present jacket connection… | ||
| scan0193 | Report listing four specific mechanical faults found in a car after a 260-mile test run. | ||
| View original record | To Hs. from R. 48230 R6/M15.6.26. 7-EX - 260 MILES RUN ON SAT/SUN. X.8770 X.8230 X.8300 X.699 The body is the worst fault in this car but I must complain of :- (1) The clutch not stopping quickly… | ||
| scan0194 | Tests on the phenomenon of self-ignition in Phantom engines after switching off. | ||
| View original record | To R. from Hs/ACL. c. to BJ. RG. c. to E. DA. c. to EY. Wor. c. to OY. Y8230 Hs/ACL1/LG18.6.26. SELF IGNITION AFTER SWITCHING OFF ON PHANTOM ENGINES. X699 Y8230 We have carried out some tests in order… | ||
| scan0195 | Engine self-ignition tests, focusing on the influence of exhaust valve temperature and engine speed. | ||
| View original record | contd :- -2- speed above 900 r.p.m. This simple test shews us that for a particular valve temperature the engine speed has to be below a certain value in order to obtain self ignition and that the… | ||
| scan0196 | Tests on the self-ignition temperatures of fuels such as petrol, benzol, and discoll. | ||
| View original record | contd :- -3- of the fuel used, or rather by the self ignition temperature of that fuel. It was proved by repeating the previous test that self ignition would occur with petrol, benzol or discoll (an… | ||
| scan0197 | Fuel ignition tests and the effects of water and air temperature on engine self-ignition. | ||
| View original record | contd :- -4- Under these conditions Shell Mex spirit would ignite up to 28 seconds of slow running but Benzol would not ignite after 18 seconds. This proves that the higher the self ignition… | ||
| scan0198 | General conclusions on engine self-ignition tests, comparing the Phantom and Silver Ghost models. | ||
| View original record | contd :- -5- GENERAL CONCLUSIONS. The conclusions we draw from the results of our tests are that when self ignition takes place it is due to the compressed charge picking up heat from the hot exhaust… | ||
| scan0199 | The cause of engines running backwards and the differences between the Phantom and Silver Ghost models. | ||
| View original record | contd :- -6- With regard to the engine running backwards - and sometimes continuing several cycles - it is probable that when so doing it obtains its charge from the exhaust system which has been… | ||
| scan0200 | Causes and potential solutions for self-ignition in the Phantom engine. | ||
| View original record | To Hs. from R c. E. c. to BJ. Wor. Rg. Da. By. PN. CWB. X8230 RE/M22.6.26. RE PHANTOM SELF IGNITION. X.699. X.8230. X.8080. I am very pleased with Mr. Lovesey's research on the cause of self ignition… | ||
| scan0201 | Mr. Royce's proposal to test a copper valve guide and umbrella valve to cure self-ignition on the Phantom. | ||
| View original record | To Hs. from E. c. to BJ. BY.2 X.8230 E2/M25.6.26. RE. PHANTOM SELF IGNITION. X.8060 X.699 X.8230 In connection with the experiments to cure self ignition on the Phantom, Mr. Royce proposes that you… | ||
| scan0202 | The acquisition and analysis of 'Ochromite' Phantom exhaust valves for an experiment to prevent self-ignition. | ||
| View original record | To Hs. from E. c. to BJ. RG. BY‡ 8230 E1/M25.6.26. RE. PHANTOM EXHAUST VALVES AND SELF IGNITION. X.8060 X.8230 X.699 Regarding the above question please note Mr. Royce would like you to obtain some… | ||
| scan0203 | Experiments comparing hot spot and pre-heated intake air systems on Phantom engines. | ||
| View original record | To R. from Hs/ACL. c. to BJ. Wor. c. to RG. E. c. to DA. BY. c. to OY. X8230 Hs/ACL1/LG26.6.26. INDUCTION PIPE HEATING ON PHANTOM ENGINES. +4305 In view of the unreliable action which is manifest with… | ||
| scan0204 | Report page detailing engine testing comparing a standard hot spot system with a preheated intake air system. | ||
| View original record | contd :- -2- First it was necessary to establish a basis of comparison for the two systems under consideration i.e., the standard hot spot and the preheated intake air. Consequently the criterion was… | ||
| scan0205 | Analysis of engine torque variation and M.E.P. with changing intake air temperature, comparing a system with 'no heat to hot spot' to a standard system. | ||
| View original record | contd :- -3- TORQUE VARIATION WITH INTAKE AIR TEMP. NO HEAT TO 'HOT SPOT'. B.M.E.P. lbs/□" 90 85 80 20 30 40 50 60 70 80 90 100 INTAKE AIR TEMP. °C. NORMAL MINIMUM VALUE THROUGH ERRATIC RUNNING We… | ||
| scan0206 | Report page analyzing the influence of mixture strength and air intake temperature on engine performance, with a corresponding graph. | ||
| View original record | contd :- -4- GRAPH: Title: INFLUENCE OF MIXTURE STRENGTH ON B.M.E.P. Y-Axis: B.M.E.P. lbs/D" X-Axis: CONSUMPTION PTS/HOUR. Curve 1 (Dashed): STD HOT SPOT HEATING WITH AVGE AIR TEMP. 32°C. Curve 2… | ||
| scan0207 | Report analyzing the effect of high intake air temperature on engine power and fuel economy. | ||
| View original record | contd :- -5- temperature is high, such as would be encountered in a hot climate. We know that when the distribution is reasonable the power will decrease with the increase of air temperature - due to… | ||
| scan0208 | Graph showing the effect of preheating by different methods on a Standard Phantom engine with a 4.1 to 1 compression ratio. | ||
| View original record | STD. PHANTOM ENGINE. 4.1 TO 1. COMPN RATIO. EFFECT OF PREHEATING BY DIFFERENT METHODS. 750 R.P.M. FULL THROTTLE. BAROMETER. 757 M.M. EXH. SYSTEM WITH CUT OUT CLOSED CONSUMPTION. PINTS/B.H.P./HOUR.… | ||
| scan0209 | Report page summarizing tests on engine air heating methods, detonation, and compression ratios. | ||
| View original record | contd :- -6- inside the others shewing poor economy and low power, being further proof that it is not such an efficient heating system as a 'hot-spot'. The chief information derived from this test is… | ||
| scan0210 | The effects of hot air intake on engine performance, power, and tendency to detonate. | ||
| View original record | contd :- -7- Under the conditions tested we find that hot air - such as would result under the bonnet of the car in hot climates - in conjunction with the standard hot spot does not reduce the… | ||
| scan0211 | Instructions for the disposal and fitting of six sets of Phantom Staybrite exhaust pipes for testing and production analysis. | ||
| View original record | 48230? SS. C.HS. Chassis BYD/H. 29.6.36. HS 24 JUN 1936 ( RECEIVED ) PHANTOM. EXHAUST PIPES. ********************* With reference to the six sets of exhaust pipes made in Staybrite, which have been… | ||
| scan0212 | Two alternative systems for heating a carburettor throttle to avoid issues with the exhaust valve. | ||
| View original record | X8230 To Hs. FROM R. R1/M5.7.26. C. BJ. BY. " PN. CWB. re. CARBURATION - THROTTLE HEATING. OBJECT: TO AVOID VALVE IN EXHAUST. -X.8080. We understand you are testing out for both engines the use of… | ||
| scan0213 | Carburetter throttle heating on Phantom engines and a proposal for car 7-EX. | ||
| View original record | To R. from Hs. c. to BJ. Wor. c. to RG. E. c. to DA. EY. c. to CY. 48230 Hs5/LG8. 7.26. CARBURETTER THROTTLE HEATING ON PHANTOM ENGINES. x8080 Except for the time taken for the initial warming up we… | ||
| scan0214 | Experiments comparing superheated throttle systems for carburetter heating on Phantom engines. | ||
| View original record | Hs/ACL1/LGS.7.26. CARBURETTER THROTTLE HEATING ON PHANTOM ENGINES. We have continued experiments with the superheated throttle system and obtained a comparison with the present standard system of the… | ||
| scan0215 | Analysis of an exhaust heated system's performance, with a graph comparing warm-up times for various configurations. | ||
| View original record | contd :- -2- (2) Standard without the exhaust butterfly. (3) Standard with the outlet pipe from hot spot leading directly into the atmosphere and no butterfly valve. (4) Superheat system with .062… | ||
| scan0216 | Performance comparison of a superheat system against a standard exhaust system, with a graph showing heating rates over time. | ||
| View original record | contd :- -3- MANIFOLD. USUAL POSITION TO HOT SPOT The next curves give the rate of heating with the super-heat system; the standard exhaust curve being inserted for com-parison. The heating rate is… | ||
| scan0217 | Engine warming-up tests and the heat added to the engine cooling system. | ||
| View original record | contd :- -4- continues to rise rapidly. The temperature figures given on these curves are expected to be much higher than those in practise, when the charge will be rapidly taking up all available… | ||
| scan0218 | Summary of experiments on a boiler and throttle heating system, discussing performance and proposed improvements. | ||
| View original record | contd :- -5- With the small feed of .025 dia. we could detect no increase of temp. of the condensing water in the calorimiter which indicated that the carb. under these particular conditions, absorbed… | ||
| scan0219 | From E. to Hs. regarding the decision not to test an alternative jacket heating system for the carburetter throttle on Phantom engines. | ||
| View original record | To Hs. from E. c. to BJ. X8230 E2Z/M10.7.26. CARBURETTER THROTTLE HEATING X. 8080 ON PHANTOM ENGINES. X. 8230 Referring to your report Hs5/LGS.7.26., page 6., Mr. Royce is now of the opinion that the… | ||
| scan0220 | Complaints, causes, and solutions for overheating in the interior of cars. | ||
| View original record | To Hs. from DA/EV. c. to LHS. E. +8230 DA/EV1/M14.7.26. OVERHEATING IN THE INTERIOR OF CARS. X.3003 X.819 X.3809 Kr822x X.8230 For some while now the C.S.C. has brought to our notice complaints of… | ||
| scan0221 | Suggestion to experimentally measure floor temperature in a closed car and identify the sources of heat. | ||
| View original record | contd :- -2- SEE ORIGINAL FOR SKETCH. In order that we may further discuss the subject with R. we would like to have your views, and suggest that it might be wise for you to try experimentally to… | ||
| scan0222 | Proposed alterations to the Phantom exhaust pipe and silencer to resolve expansion issues. | ||
| View original record | X. 3230 To BY. from E. c.c. to BJ. HS. E4/M24.7.26. PHANTOM EXHAUST PIPE AND SILENCER. We send you herewith drawing LeC.2275 shewing the alterations proposed to overcome the expansion trouble on the… | ||
| scan0223 | Experiments to determine the cause of explosions in a Phantom's silencer. | ||
| View original record | To R. from Hs/ACL. c. to BJ. Wor. c. to RG. E. c. to DA. BY. c. to OY. V8230 Hs/ACL1/LG13. 8. 26. EXPLOSIONS IN SILENCER ON PHANTOM. X93 X8080 We have carried out some experiments with the object of… | ||
| scan0224 | Analysis of continuous explosions when coasting with a slightly open throttle. | ||
| View original record | contd :- -2- Hs/ACL1/LG13. 8. 26. -------------------- By these means we were able to reproduce the trouble laid down in each of the afore mentioned cases. From general observation of the first tests… | ||
| scan0225 | Experimental results and theory on engine mixture and firing behavior. | ||
| View original record | contd :- -3- We put forward some experimental results in support of the above theory. One exhaust manifold was removed to give a clear view through the exhaust ports. The engine was motored over at… | ||
| scan0226 | Analysis of engine explosions in the exhaust manifold under various experimental conditions. | ||
| View original record | contd :- -4- Hs/ACL1/LG13.8.26 ----------- For the next experiment the engine was motored at 1000 r.p.m. with the carburetter mixture control normal and the throttle adjusted until explosions took… | ||
| scan0227 | Analysis of the causes of explosions in the exhaust manifold and silencer when closing the throttle. | ||
| View original record | contd :- -5- the exhaust dilution as in the other cases. A certain amount of fuel will line the induction system, particularly so if fairly wide throttle and low speed has been used previously.… | ||
| scan0228 | Broken exhaust manifold on chassis 55-MC due to expansion and contraction. | ||
| View original record | Hs RECEIVED 21 AUG 1926 X8230 Hm. c. Hs. BY11/H. 23.8.26. RECEIVED 24 AUG 1926 CHASSIS 55-MC. BROKEN EXHAUST MANIFOLD. With reference to Hm/WSB21/EW. 20.8.26. we are aware of this trouble. It is due… | ||
| scan0229 | Experiments to stop explosions in a Phantom's silencer by admitting air to the induction pipe. | ||
| View original record | To R. from Hs/ACL. c. to BJ. Wor. c. to E. Da. c. to Ey. Oy. +8230 Hs/ACLL/T23.8.26. EXPLOSIONS IN SILENCER OF PHANTOM. +93 We have continued experiments on explosions in the silencer and have… | ||
| scan0230 | Analysis of engine explosions in the silencer, induction pipe depression, and the effects of fuel mixture. | ||
| View original record | Contd. -2- Hs/ACLL/T23.8.26. Its usefulness was extremely limited because if under one particular set of conditions enough air were admitted it would give an inadequate supply for larger throttle… | ||
| scan0231 | Troubleshooting engine explosions by adjusting carburettor mixture, throttle openings, and early ignition timing. | ||
| View original record | Contd. -3- Hs/ACL1/T23.8.26. If, however, the throttle is slightly closed the explosions will start again. An explanation of this is that the rich mixture from the carburetter combined with the… | ||
| scan0232 | Testing wire gauze in the exhaust system and the effect of a governor to prevent explosions. | ||
| View original record | Contd. -4- Hs/ACL1/T23.8.26. Wire gauze over exhaust port:- Copper gauze screens over the exhaust ports, although not entirely preventing the trouble certainly reduce the tendency, but as they very… | ||
| scan0233 | Summary of methods to prevent continuous explosions in the silencer. | ||
| View original record | Contd. -5- Hs/ACL1/T23.8.26. opening up and again perhaps just after shutting the throttle. At present we know no means of preventing this. Our next step in this direction is to see to what extent the… | ||
| scan0234 | Investigation into the cause of explosions in the silencer on the Phantom model. | ||
| View original record | To R. from Hs. c. to BJ. Wor. c. to RG. E. c. to DA. EY. c. to CY. X8230 EXPLOSIONS IN SILENCER. X8140 As this complaint is considered by Sales to be one of the worst features on the Phantom, we are… | ||
| scan0235 | Throttle friction, proposing ball bearings and comparing engine performance with Hispano and Lancia cars. | ||
| View original record | contd :- -2- up correctly, the chief cause of friction is the bearings for the throttle. We are proposing to try ball bearings in this position to see what improvement can be made. We have tried the… | ||
| scan0236 | Experiments with a superheated hot spot system on the Phantom model. | ||
| View original record | To R. from Hs/ACL. c. to BJ. Wor. c. to RG. E. c. to DA. BY. c. to OY. X8230 Hs/ACLl/LG27. 8. 26. SUPERHEATED HOT SPOT SYSTEM ON PHANTOM. X8230 X8070 Further experiments have been made with the… | ||
| scan0237 | Heat transference, superheated systems, and tests to determine heat flow to the engine cooling water. | ||
| View original record | contd :- -2- low when light running which does not tend to promote good heat transference. Curve '1. therefore represents the quickest warming up we have been able to obtain with the superheated… | ||
| scan0238 | Report page analysing heat added to cooling water under various loads and speeds, with conclusions on improving the induction system. | ||
| View original record | contd :- -3- CONDITION. | R.P.M. | B.T.U's/MIN. ADDED TO COOLING WATER. | % OF HEAT ADDED TO THE NORMAL HEAT FLOW TO THE WATER.… | ||
| scan0239 | Diagram of an apparatus used for heat flow tests and a graph showing the temperature rise of oil. | ||
| View original record | DIAGRAM OF APPARATUS USED FOR HEAT FLOW TESTS SUPPLY TO BOILER. INDN PIPE T1 THERMO w lbs/H BOILER. .025 DIA FEED HOLE HOT SPOT STEAM & WATER FROM HOT SPOT CALORIMETER T2 THERMO SUPPLY WATER THERMO… | ||
| scan0240 | Overheating in the interior of Phantom cars and the difficulties of fixing exhaust lagging. | ||
| View original record | To B.J. from Hs. X8230 Hs6/LG30.8.26. Overheating in interior of Phantom Cars. X8230 X3908 Answering your BJ8/D25.8.26. There are certain difficulties in the way of us fixing exhaust lagging to the… | ||
| scan0241 | Experiments to prevent exhaust system corrosion on Phantom chassis. | ||
| View original record | RHO HY/ES. C. HS. ------- 4-0 8/9/26 X8230 BY7/H. 8.9.26. ----------------- All Phantom chassis on experimental running should be fitted with exhaust manifolds under one or other of the experiments… | ||
| scan0242 | Investigations into the fault of explosions in the silencer, comparing the Phantom and Silver Ghost models. | ||
| View original record | To Hr. from Hs. c. to BJ. c. to Wor. X8230 Hs2/LG11.9.26. EXPLOSIONS IN SILENCER. X93 Replying to Hrs/FMO.9.26. Investigations are being carried out in connection with this fault, but at the moment we… | ||
| scan0243 | Cause and potential cures for a 'popping back' issue in Phantom engines. | ||
| View original record | X8230 To HS. from R. c. to BJ. for HR. R2/M13.9.26. PHANTOM. X.8080. X.93. X.8230. HR. writes of "popping back". I am not sure what this means. We generally understand the term to mean "in the… | ||
| scan0244 | Modifications to a silencer to prevent heat damage to car bodies. | ||
| View original record | X8230 To BJ. from Hs. c. to Wor. c. to BY. Hs6/LG5.10.26. MODIFICATIONS TO SILENCER TO PREVENT HEAT AFFECTING BODIES. X3003 X3908 During our last visit to WW. we discussed with R. the scheme which has… | ||
| scan0245 | Explosions in the silencer of a Phantom car. | ||
| View original record | To B.J. from Hs. c. to Wor. X8230 Hs2/LG6.10.26. EXPLOSIONS IN SILENCER. X93 Some time ago we asked that we might examine a Phantom car which was complained of for this fault. There was at that time a… | ||
| scan0246 | Technical memo discussing the causes and tests related to explosions in the silencer. | ||
| View original record | To OY. from Hs. EXPLOSIONS IN SILENCER. In reply to OY8/E9.17.26. We are very interested indeed in your report on explosions in the silencer. We shall be interested to hear whether you continue to… | ||
| scan0247 | Test procedure for a Phantom vehicle to diagnose explosions in the silencer related to the carburetter and throttle settings. | ||
| View original record | contd :- -2- We suggest that the following simpe test be carried out on your Phantom - which at present is free from this trouble. Disconnect the petrol feed pipe from the starting carburetter, the… | ||
| scan0248 | Summary of conclusions regarding explosions in the silencer, comparing the Phantom and Silver Ghost models. | ||
| View original record | To R. from Hs/AJL. c. to Ed. Wor. c. to Rg. E. c. to Da. Ey. c. to Ov. +8230 Hs/AJL1/T7.10.26 EXPLOSION IN SILENCER. X93 Attached herewith are reports on this fault. The conclusions are :- (1) Owing… | ||
| scan0249 | Tests conducted to understand explosions in the silencer of the Phantom chassis. | ||
| View original record | Hs/AJL1/T7.10.26. EXPLOSIONS IN SILENCER (PHANTOM) We have carried out a series of tests on the above fault which is present in some degree on all Phantom chassis, with the following results.… | ||
| scan0250 | Report discussing the causes of engine explosions related to governor controls, throttle settings, and induction system leaks. | ||
| View original record | -2- Contd. (b) If the governor controls are set correctly and work freely there is no possibility of the governor opening the throttle or preventing it from closing at speeds above three to five miles… | ||
| scan0251 | Analysis of eliminating engine explosions by adjusting petrol flow into the induction system at different throttle positions. | ||
| View original record | -3- Contd. carburation is at full weak than when full strong. As in (a) and (b) a leak in the induction system greatly intensifies explosions, they are decidedly more noticeable under all carburetter… | ||
| scan0252 | Engine throttle issues, extra petrol feed, and causes of firing in the silencer. | ||
| View original record | -4- Contd. the extra petrol could be used without upsetting the normal slow running of the engine; it was found that the smallest throttle opening necessary to run the engine is 1½º, this gives a road… | ||
| scan0253 | Page describing the effects of carbon deposit and worn bearings on throttle closure and suggesting ball bearings as a solution. | ||
| View original record | -5- Contd. (a) The effect of the gummy carbon deposit (a) is to prevent the throttle from closing fully if released slowly; if it is released quickly the throttle overcomes the resistance of the… | ||
| scan0254 | List of general tests carried out to investigate explosions in the silencer and induction system. | ||
| View original record | -6- Contd. We give below a list of more general tests which have been carried out with regard to explosions in the silencer :- (1) A leak was made in the induction pipe and compensated for by… | ||
| scan0255 | List of checks and potential improvements for a vehicle fault, focusing on the throttle and carburettor. | ||
| View original record | Contd. -7- (a) Correctly set, and free governor operation. (b) Good fitting throttle. (c) Good throttle spindle bearings. (d) Clean throttle. (e) Sound, non-leaking induction system. (f) Carburetter… | ||
| scan0256 | Investigation into explosions in the silencer, comparing the causes between the Silver Ghost and Phantom models. | ||
| View original record | Hs/AJL2/T7.10.26. EXPLOSIONS IN SILENCER (SILVER GHOST) In connection with investigations carried out on Phantom cars relative to explosions in the silencer, we have carried out similar tests on a… | ||
| scan0257 | Comparison of ignition and throttle systems between the Phantom and Silver Ghost models, focusing on explosions and throttle closing. | ||
| View original record | -2- Contd. We are now assuming that ignition of small charges is completed in the cylinder on the Silver Ghost but in the case of the Phantom ignition commences in the cylinder and is completed in the… | ||
| scan0258 | Comparison of fuel mixture requirements for silencer explosions in Silver Ghost and Phantom models. | ||
| View original record | -3- Contd. Once the correct mixture for silencer explosions is obtained on a Silver Ghost, the explosions are equally as violent and numerous as on a Phantom under similar conditions. It was noticed… | ||
| scan0259 | Valve timing and the induction system for the Aluminium Phantom Engine. | ||
| View original record | To Hs. from R. X8230 RL/M9.10.26. RE. ALUMINIUM PHANTOM ENGINE. X. 8770 X8070 X. 8840 X. 8080 (struck through) X. 8230 X. 8060 Regarding the power of the Phantom engine we want to hold open the inlet… | ||
| scan0260 | Request for the Experimental Dept. to examine a New Phantom car with an explosions-in-silencer fault. | ||
| View original record | [Struck out text] X8230 Hsl/LG18.10.26. EXPLOSIONS IN SILENCER ON NEW PHANTOM. Several weeks ago we asked that the Experimental Dept. should have an opportunity of examining the Phantom car which was… | ||
| scan0261 | The distortion and failure of exhaust pipes on a 12-EX car. | ||
| View original record | To BY. from Hs/GWH. c. to Wor. 48230 Hs/GWH2/LG3.11.26. EXHAUST PIPES - 12-EX CAR. X7230 Owing to the continued distortion of the down take pipes, the pipe leading from the hot spot on carburetter… | ||
| scan0262 | Receipt and distribution of Phantom exhaust valves made from 'Ochromite' for material analysis. | ||
| View original record | X8230 To Hs.. BY/HM5/K. 3. 11. 26. RE PHANTOM EXHAUST VALVES & SELF INGITION. As requested by E. in his memo E1/M25.6.26., we ordered through OY. 18 valves made in 'Ochromite'. These valves have now… | ||
| scan0263 | Fault of the Phantom engine running backwards when being switched off, which has been traced to the exhaust valves. | ||
| View original record | To CWB. from Hs/Rm. c. to EP. X8230 Hs/Rm4/LG4.11.26. PHANTOM ENGINE RUNNING BACKWARDS WHEN SWITCHING OFF. X699 With reference to CWB13/GM3.11.26. We have, as you state, traced the trouble of the… | ||
| scan0264 | Note discussing issues with carburetter connections and exhaust pipes due to expansion and contraction effects. | ||
| View original record | X.8230 H. C. Wer. c. Hs/GWH. BY6/H. 5.11.26 RECEIVED Hs 5 NOV 1926 CONNECTIONS FROM EXHAUST TO CARBURETTER AND ALSO EXPANSION EFFECTS ON EXHAUST PIPES THEMSELVES.… | ||
| scan0265 | From R. to Hs. E. proposing a modification to the 40/50 lightweight engine's carburetter and induction system, based on the Lorraine engine. | ||
| View original record | X8230 To Hs. E. from R. R2/M11.11.26. LORRAINE AND 40/50. X.3588 X.8080 X.8230 Can we not put on our 40/50 lightweight engine a carburetter and induction system like the Lorraine - i.e. 2 triple… | ||
| scan0266 | Tests comparing governor control versus positive hand-controlled throttles to prevent silencer explosions. | ||
| View original record | X8230 Hs/AJL/T 15.11.26. EXPLOSIONS IN SILENCER. X3436 THROTTLE CONTROL. X8140 X93 Tests we have carried out indicate that a positively hand controlled throttle is a definite disadvantage as compared… | ||
| scan0267 | Diagnosing and remedying explosions in the silencer caused by improperly adjusted throttle controls. | ||
| View original record | contd :- -2- It is very important that all controls be adjusted to ensure that the throttle closes when the governor lever is at the bottom of the quadrant. In previous reports we have emphasised very… | ||
| scan0268 | Technical analysis of engine explosions, comparing the Phantom unfavourably with the Silver Ghost. | ||
| View original record | contd :- -3- lever is set to drive the car, consequently the range over which explosions can occur is relatively small. Our recommendations for reducing explosions to a minimum were given in… | ||
| scan0269 | Continued report page comparing a component to the Phantom and mentioning a forthcoming report on a roller bearing throttle. | ||
| View original record | contd :- -4- slightly quieter than the Phantom and absorbed considerably more H.P. We hope to be in a position to report on the roller bearing throttle in the course of the next few days.… | ||
| scan0270 | Proposed heat shield for a Phantom's exhaust silencer to mitigate excessive heat. | ||
| View original record | To BY. from DA. c.c. to BJ. Hs. X8230 DA2/M26.11.26. PHANTOM - HEAT SHIELD FOR EXHAUST SILENCER. X.8230 X.3908 Herewith we send N.sch. 2311 shewing the proposed shield between the silencer and the… | ||
| scan0271 | Proposed new front axle control for the Phantom model, including modifications and a testing method. | ||
| View original record | +8230. To EY. from DA. c. to BJ. Hs. DA3/M4.12.26. FRONT AXLE CONTROL. X.8005 X.235. X.8420 X.8230 X.8430 We send herewith N.schs. 2293/4 shewing the proposed front axle control, using the spring as… | ||
| scan0272 | Repeated failure of the Phantom Induction and Jacket Feed Pipes, with proposed alterations to fix issues of thermal expansion and gas flow. | ||
| View original record | 6868 48230 E1/M22. 2. 27. To BY from E. c. to BJ R. Hs. PHANTOM INDUCTION PIPE - X. 8070 JACKET FEED PIPE. - X. 8230 With regard to the repeated failure of the above part, all the examples submitted… | ||
| scan0273 | Proposing alterations to the Phantom induction and exhaust jacketed feed pipes to resolve in-service issues. | ||
| View original record | To RG. from E. c. to BJ. BY. Hs. X8230 E2/M8.3.27. PHANTOM INDUCTION PIPE X.8070. EXHAUST JACKETED FEED PIPE.X.8230 We should be glad to have your opinion of Sch.894., shewing some alterations to the… | ||
| scan0274 | Request to fit a heat shield to car 8-EX and to borrow a Phantom throttle governor casing for testing. | ||
| View original record | To RHC. from Hs/Rn. X82-30 Hs/Rn2/LG14.5.27. X8140 Will you please arrange to fit a heat shield on the silencer of 8-EX as soon as the parts are available. Also will you please let us have one Phantom… | ||
| scan0275 | Fitting of a lubricator to address a squeaking and sticking exhaust butterfly baffle. | ||
| View original record | S/W. Hs. X8230 CWB12/GM/13.6.27. SQUEAKING AND STICKING OF EXHAUST BUTTERFLY BAFFLE. With reference to Hsl/LG28.5.27, in which you report you have a modification which enables this valve to be easily… | ||
| scan0276 | The despatch and fitting instructions for two Butterfly Valves for the Phantom Exhaust Downtake Pipes. | ||
| View original record | CWB HS Y8230 To Hs. from RHC. RHC3/EE. 17.6.27. We have to-day despatched 2 - Butterfly Valves for the Phantom Exhaust Downtake Pipes, which are to be fitted to chassis - 70.EF and 103.MC. These… | ||
| scan0277 | Instructions for fitting replacement butterfly valves to the Phantom exhaust system for specific chassis numbers. | ||
| View original record | To CWB. from Hs. X8230 Hs3/LG18.6.27. PHANTOM - EXHAUST SYSTEM. X8230 X8950 We have today despatched 2 Butterfly valves for the Phantom Exhaust Downtake Pipes, which are to be fitted to chassis -… | ||
| scan0278 | Use of bronze versus black leaded steel nuts on exhaust manifolds to prevent seizing. | ||
| View original record | X830 C.Hs. BY3/H. 20.6.27. NUTS SECURING EXHAUST MANIFOLDS. ------------------------------ Some long time ago you raised an issue, which was on the Phantom chassis at that time, in connection with the… | ||
| scan0279 | Fitting of special butterfly valves for a Phantom exhaust system and scheduling the 10-EX touring car. | ||
| View original record | S/W. Hs. X8230 CWB19/GM/20-6-27. PHANTOM EXHAUST SYSTEM. I have received your Hs3/LG18.6.27 and also the two special butterfly valves, which we will have fitted as soon as possible. Do you recommend… | ||
| scan0280 | Use of graphite grease on butterfly valves and the movement of specific vehicles. | ||
| View original record | To. CWB. from Hs. 48230 48774 Hs5/LG21.6.27. We recommend graphite grease should be used on the butterfly valves. As regards 10-EX, I hope to take this car to WW. next week. If R. approves, we will… | ||
| scan0281 | Resume of the position regarding issues with nuts securing exhaust manifolds and the solutions explored. | ||
| View original record | c Hs. 48230 RECEIVED [stamp] Mx/McM2/T22.6.27. re Nuts Securing Exhaust Manifolds. BY3/H20.6.27. With reference to the above we give below a resume of the position. Mx5/T30.11.26. Drew your attention… | ||
| scan0282 | Modifications to the Phantom exhaust pipe system for chassis fitted with front axle control. | ||
| View original record | X8230 To BY. from E. c. to BJ. Hs. E2/M9.7.27. PHANTOM EXHAUST PIPES FOR CHASSIS X. 8230 FITTED WITH FRONT AXLE CONTROL. X. 8420 Since it was not found possible to make a good job of the existing type… | ||
| scan0283 | Proposal to improve road clearance on Phantom and 20 HP models by modifying the exhaust pipe and rear petrol tank sump. | ||
| View original record | To Hs. from R. c. to BJ. BY. 78230 R4/M9.7.27. PHANTOM AND 20 HP. ROAD CLEARANCE. X.516 X.5230 X.8230 X.8470 X8460 It is proposed to lift up the exhaust pipe somewhat, by flattening it (making it oval… | ||
| scan0284 | Quarterly complaints report addressing failures of the water pump and hot spot pipe with proposed design solutions. | ||
| View original record | To Hm. from Hs/Rn. x8230 Hs/Rn8/LG14.7.27. Quarterly complaints. x8150 (1) Failure of water pump. A standardisation sheet has been circulated for a new type of gland which we have recently developed.… | ||
| scan0285 | Necessity and testing of an exhaust heat shield baffle for open touring cars. | ||
| View original record | X8230 To Sg. from Hs/Rm. Hs/Rm1/LG15.7.27. With reference to Sg11/M13.7.27. We do not consider the exhaust heat shield is essential for open touring cars. It is reasonably easy to add this fitment if… | ||
| scan0286 | Standardisation of a baffle on the silencer to reduce heat in the body. | ||
| View original record | RR 755 REVISED (10H) (DE 649 9-12-26) BM. 2/1187. 48230 COMPLETED 20.7.27. STANDARDISATION of CHASSIS PARTS. Date 25.5.27 Description of Parts. BAFFLE ON SILENCER TO REDUCE HEAT IN BODY. X No. 3908… | ||
| scan0287 | Standardization of chassis parts detailing the first fitment of a new component. | ||
| View original record | STANDARDISATION of CHASSIS PARTS Date X (1) The number of the first chassis on which the new part will be fitted. | 175th. in D2. (2) Date when the chassis will be handed to test. | 2.10.27. (3) Cost… | ||
| scan0288 | The testing of lubricated butterfly valves in the exhaust down-take, recommending standardization. | ||
| View original record | X8230 S/W. Hs. Copy to:- EP. CWB6/GM/27-9-27. BUTTERFLY VALVE IN EXHAUST DOWN-TAKE. I have now had the opportunity of making a lengthy test with the two special lubricated butterfly valves for the… | ||
| scan0289 | New single downtake pipe, exhaust system, and a new slipper flywheel. | ||
| View original record | BY. from E. c. to BJ. Hs. 4230 E1/M24.10.27. EAC.14 X. 8774 X. 8230 X. 8070 Referring to your memo. BY14/G14.10.27., the only item that calls for special comment seems to be No.6. - new single… | ||
| scan0290 | Upcoming tests for a modified crankshaft, tubular connecting rods, and slipper wheel in a 10-EX Phantom engine. | ||
| View original record | To R. from Hs. c. to BJ. Wor. c. to E. DA. c. to BY. X8230 Hs6/LG1.11.27. X8770 X8010 PHANTOM. Next week we shall be testing the modified crankshaft, tubular conn. rods and new slipper wheel in 10-EX… | ||
| scan0291 | The difficult fitting of a flexible exhaust jacket feed pipe for the Phantom, suggesting custom fitting and the use of varying aluminium washers. | ||
| View original record | To [strikethrough] from RHC. C. Hse C. Dv/cs X8230 RHC5/BE. 3.11.27. RE PHANTOM EXHAUST With reference to the flexible exhaust jacket feed pipe to Scheme 894. This has been fitted to Chassis 8.EX. It… | ||
| scan0292 | Fitting a parallel control for the F.2 series, comparing single and double downtake options. | ||
| View original record | E. Dept. F. Dept. G. Dept. c. Hs. c. BY/SS. X8230 BY14/G.8.11.27. It is most probable that we shall fit the parallel control for F.2 series, this being the case we shall not be able to fit the single… | ||
| scan0293 | Standardisation of a modified pipe to the exhaust hot spot to improve reliability. | ||
| View original record | RR 755 REVISED (10H) (DE 649 9-12-26) BM. 2/1187. 48230 COMPLETED 29.11.27 STANDARDISATION of CHASSIS PARTS. Date 10.11.27 Description of Parts. MODIFIED PIPE TO EXHAUST HOT SPOT. X No. 8230 Drawing… | ||
| scan0294 | Questionnaire detailing the chassis number, test date, and costs for fitting a new part. | ||
| View original record | Ref 2210 Cars 1. The number of the first chassis on which the new part will be fitted. F2. 2. Date when the chassis will be handed to test. 9.4.28 3. Cost of scrapped material, if any. £27 4. Cost of… | ||
| scan0295 | Standardisation sheet detailing cost figures for new and old parts. | ||
| View original record | STANDARDISATION SHEET X. 8230 24.11.27 DETAILS OF COST FIGURES. £. s. d. NEW PARTS. E.76086 Nipple. 1 } Material 2 4 E.76087 Connection. 1 } Labour. 1 0 6 E.76089 Feed pipe. 1 } Factory charges (180%)… | ||
| scan0296 | Test report comparing a new single downpipe exhaust system for the Phantom with the standard system for power output and noise. | ||
| View original record | To R. from Hs/ACH. c. to BJ. Wor. c. to E. DA. c. to BY. N8230 Hs/ACLL/LG21.11.27. PHANTOM - SINGLE DOWNPIPE EXHAUST SYSTEM. Tests have been carried out on the test bench with the new single down pipe… | ||
| scan0297 | Continuation of a report on hot spot valve experiments and investigations into exhaust systems. | ||
| View original record | contd :- -2- why the hot spot valve should not be omitted. Previous experiments in this direction have shewn no ill effects resulting from a high hot spot temperature at the high speeds except a… | ||
| scan0298 | Performance graph comparing a single outlet exhaust manifold with different hot-spot valve settings against a standard exhaust system on a Phantom P.E.25 engine. | ||
| View original record | V170 SINGLE OUTLET EXHAUST MANIFOLD TO Le C.2432/6/7. (TWO SHEETS) SHEET I:- CUTOUT CLOSED. PHANTOM ENGINE No P.E.25. COMPRESSION RATIO = 4.12. LONG DURATION INLET CAM. STANDARD INDUCTION SYSTEM.… | ||
| scan0299 | Graph of Brake Horse Power versus engine RPM for a single outlet exhaust manifold with the cutout open. | ||
| View original record | SINGLE OUTLET EXHAUST MANIFOLD TO Ie C. 2432/6/7 (TWO SHEETS) V171 SHEET II: CUTOUT OPEN. FOR CONDITIONS SEE SHEET I BRAKE - HORSE - POWER R.P.M. OF ENGINE STANDARD EXHAUST SYSTEM Ie C. 2432/6/7 NOTE:… | ||
| scan0300 | Unsatisfactory exhaust noises on the New Phantom caused by a faulty cut-out control mechanism. | ||
| View original record | S/W. EP. Copy to:- Hs. By. PN. X8230 CWB5/GM/6.12.27. NEW PHANTOM EXHAUST NOISES. CUT OUT CONTROL. Practically every Phantom which is tested is unsatisfactory as regards the noises from the exhaust.… | ||
| scan0301 | Tests on a Phantom single downpipe exhaust system to determine the cause of power loss. | ||
| View original record | X8230 To R. from Hs/ACL. c. to BJ. Wor. c. to E. BY. c. to DA. CY. Hs/ACL1/LG6.12.27. PHANTOM SINGLE DOWNPIPE EXHAUST SYSTEM. ------------------------------------- Further tests have been carried out… | ||
| scan0302 | The performance comparison of single versus standard manifold systems, detailing power loss, heat output, and modifications. | ||
| View original record | contd :- -2- compared with 13 HP. experienced with the single manifold system. With the single manifold system the added restrict- ion of cutout closed results in a loss relative to open exhausts of… | ||
| scan0303 | Summary comparing single and double exhaust manifolds, detailing power loss, temperature, and noise issues. | ||
| View original record | contd :- -3- was necessary in order to avoid interference from cyls. where the exhaust periods overlapped. It will be remembered a number of indicator diagrams were taken shewing the effect of… | ||
| scan0304 | Graph of Brake Horse Power vs RPM showing power loss for a Phantom engine with a single outlet exhaust manifold. | ||
| View original record | POWER LOSS TO SINGLE OUTLET EXHAUST MANIFOLD (PHANTOM) ENGINE RE 25. COMPRESSION RATIO = 4.12 LONG DURATION INLET CAM. STANDARD INDUCTION SYSTEM EXHAUST SYSTEM TO L.E C. 2432/6/7. BRAKE HORSE POWER… | ||
| scan0305 | Graph showing the power loss to standard exhaust manifolds for a Phantom engine. | ||
| View original record | POWER LOSS TO STANDARD EXHAUST MANIFOLDS (PHANTOM). ENGINE R.F. 25 COMPRESSION RATIO - 4.12 LONG DURATION INLET CAM. STANDARD INDUCTION SYSTEM. STANDARD TWO BRANCH EXHAUST SYSTEM. BRAKE HORSE POWER… | ||
| scan0306 | Graph comparing power loss for different exhaust systems on a Phantom engine. | ||
| View original record | POWER LOSS COMPARISON OF EXHAUST SYSTEMS ON PHANTOM ENGINE. ENGINE RE 25. COMPRESSION RATIO = 4.12 LONG DURATION INLET CAM. STANDARD INDUCTION SYSTEM. CURVES. ① MANIFOLD TO Le C 2432/6/7 & COMPLETE… | ||
| scan0307 | Graph showing power loss for a modified single exhaust manifold on a Phantom engine. | ||
| View original record | POWER LOSS TO MODIFIED SINGLE EXHT MANIFOLD (PHANTOM) V181 ENGINE RE 25 COMPRESSION RATIO - 4.12 LONG DURATION INLET CAM STANDARD INDUCTION SYSTEM EXHAUST MANIFOLD TO L.e.C 2432/6/7 BUT MODIFIED TO… | ||
| scan0308 | Sketch showing an alteration to a Phantom single outlet exhaust manifold. | ||
| View original record | V182. SKETCH SHEWING ALTERATION TO PHANTOM SINGLE OUTLET EXHAUST MANIFOLD (Le C. 2432/6/7) 28.10.22 | ||
| scan0309 | Lack of sympathy for a design alteration regarding the New Phantom Chassis exhaust noises and cutout control. | ||
| View original record | W/S CWB. c. Hs. c. BY. c. PN. X8230 EP11/H9.12.27. re. New Phantom Chassis Exhaust Noises. Cutout Control. With reference to the last paragraph of your CWB5/GM/6.12.27. This I have done, but am afraid… | ||
| scan0310 | Standardisation of an exhaust choke valve lubricator scheme to eliminate squeaks. | ||
| View original record | RR 755 REVISED (10H) (DE 649 9-12-26) BM. 2/1187. K. 8230 COMPLETED 11.1.28 STANDARDISATION of CHASSIS PARTS. Date 29.11.27 Description of Parts. EXHAUST CHOKE VALVE LUBRICATOR SCHEME 867. Origin. To… | ||
| scan0311 | Form outlining the costs and implementation details for the standardisation of chassis parts. | ||
| View original record | STANDARDISATION OF CHASSIS PARTS (1) The number of the first chassis on which the new part will be fitted. F2. (2) Date when the chassis will be handed to test. 9.4.28. (3) Cost of scrapped material,… | ||
| scan0312 | Design of gas passages, pipes, and carburettors for Super Sports models, and reporting on vehicle testing. | ||
| View original record | E. Hs. from R. BY. c. to BJ. Wor. RG. Da. 48230 RL/M21.1.28. RE. SUPER SPORTS. X.8070 X.8230 GAS PASSAGES AND PIPES. X.8080 X.8992 You will see that the passages I had sketched are like those you shew… | ||
| scan0313 | Design of exhaust manifolds and pipes for the Super Sports 20 HP model. | ||
| View original record | E. from R. Hs. BY. c. to BJ. Wor. RG c. to DA. X8230 R3/M21.1.28. SUPER SPORTS 20 HP. EXHAUST MANIFOLDS AND PIPE. X. 8230 X. 5230 X. 7230 It is understood that on the improved 20 HP. (next 10,000… | ||
| scan0314 | Phantom exhaust manifold pipe corrosion and a proposal to have them 'fescolised' to prevent it. | ||
| View original record | RHC. c. Hs. X8230 BY9/G.21.3.28. EXHAUST MANIFOLDS. Phantom In order to try and overcome the trouble we have had with exhaust pipes corroding away, (I am referring of course to the mild steel pipe… | ||
| scan0315 | Correspondence regarding a sample 'Staybrite' single downtake exhaust pipe for the Phantom engine, supplied by Accles & Pollock. | ||
| View original record | Hs. C. RHC. X8230 BY2/G.23.3.28. E.76670. SINGLE DOWNTAKE EXHAUST PIPE - PHANTOM ENGINE. Referring to RHC17/BR.2.11.27. Accles & Pollock had interested themselves in making a Staybrite pipe for the… | ||
| scan0316 | Potential issues with aluminium coating on exhaust manifolds and proposing experimental tests. | ||
| View original record | H1. Hs. Rg. X8230 BY3/G.4.5.28. PRODUCTION OF EXHAUST MANIFOLDS. -------------------------------- With reference to an attempt we have been making to protect our chassis exhaust manifolds by the use… | ||
| scan0317 | Investigation into exhaust valve stretching on a Phantom model. | ||
| View original record | To R. from Hs. c. to BJ. Wor. c. to RG. E. c. to DA. BY. X8230 Hs3/LG10.5.28. PHANTOM. EXHAUST VALVES STRETCHING. X/230 We have examined valves out of the engine which had this trouble in France.… | ||
| scan0318 | Urgent third application memo regarding an opinion on Front Silencer Covers made of 'Coronil' metal for the 40/50-HP chassis. | ||
| View original record | Hs. THIRD APPLICATION. X8230 ROY/MS1/P.10.5.28. 40/50-HP CHASSIS. FRONT SILENCER COVERS E.74696 - IN "CORONIL" METAL. Please refer to our memo ROY/MS2/P.4.4.28. and let us have your opinion as to the… | ||
| scan0319 | Non-receipt of front silencer covers R.74696 in Coronil metal. | ||
| View original record | X8230 To ROY/Ms. from Hs/AJL. Hs/AJL3/LG11.5.28. With reference to ROY/MSL/P10.5.28. We cannot trace ever having received any front silencer covers R.74696 in Coronil metal. Perhaps some confusion has… | ||
| scan0320 | Stretching of exhaust valves on vehicle 29-CL and proposed design alterations. | ||
| View original record | S/W. Hs. X8230 CWB15/GM/29.10.28. 29-CL. STRETCHING OF EXHAUST VALVES. As you are aware, on the return of 29-CL. from a tour of approximately 4,500 miles, two of the exhaust valves were found to be… | ||
| scan0321 | Results of a 5000-mile test on aluminium-treated exhaust manifolds for the Phantom model. | ||
| View original record | To BY. from Hs. c. to Wor. X8230 Hsl/LG19.11.28. PHANTOM - EXHAUST MANIFOLDS. In answer to BY2/G10.7.28. These tests have been delayed owing to several pipes being changed through experimental designs… | ||
| scan0322 | Experimental fitting of a Phantom rear silencer to an SS car's exhaust system. | ||
| View original record | +8230. BY. Hs. from DA. DA2/M22. 3. 29. SS. EXHAUST SYSTEM. X. 7230 X. 8230 We believe that you would welcome the use of the complete Phantom rear silencer as you have all tools etc. for it. If this… | ||
| scan0323 | Special copper asbestos jointings with a steel liner for the Phantom engine exhaust manifold. | ||
| View original record | Hs. ~~KSO~~ X8230 BY3/G.28.5.29. PHANTOM ENGINE - EXHAUST MANIFOLD JOINTINGS. If the special jointings made up as copper asbestos type with a steel liner for strength were able to be fitted… | ||
| scan0324 | Introduction of a new steel for exhaust valves in all chassis and aero engines. | ||
| View original record | GOR. HS. Rg. X8230 BY3/HP.30.7.29. X.4621 X5230 X.4011 X7230 X.4483 X8230 X9230 Exhaust Valves Chassis and Aero Engine. Mr Royce this afternoon on the telephone informed me that he wanted to bring in… | ||
| scan0325 | Internal correspondence regarding a complaint about exhaust manifolds. | ||
| View original record | y8230. To BY and Hs. from Wor. Phan I Wor9/T.6.1.31. Re Exhaust Manifolds. Re attached correspondence. Can you tell me if anything is being done with this complaint. I should be pleased to have some… | ||
| scan0326 | Consistent failures of the Phantom I exhaust manifold and a proposed new design. | ||
| View original record | To Wor. From Hs/GWH. Re. PHANTOM I. EXHAUST MANIFOLD. The failures of Phantom I. exhaust manifolds were consistent during the 10,000 miles tests, and although improvements were made from time to time,… | ||
| scan0327 | Design and issues with exhaust pipes, proposing alternative solutions. | ||
| View original record | E. HS. ) FROM R. BY. ) (At Le Canadel.) X8230. R4/M3.4.31. C. to SG. WOR. P. 1. EXHAUST PIPES. I may be quite wrong but these have not been designed as I expected - not simple enough. I do not see why… | ||
| scan0328 | Hand-drawn sketch of a vehicle frame section with annotations. | ||
| View original record | LONG & LOOSE AS POSSIBLE CAN'T SEE ANY ADVANTAGE IN JOINING THE TWO TOGETHER | ||
| scan0329 | Requesting the supply of modified exhaust manifolds for testing. | ||
| View original record | COPY. 88230 To RHC. From Hs/Lid. Hs/Lid.8/MJ.22.7.31. EXHAUST MANIFOLDS. X.5230. X.8230. Will you please supply the following modified exhaust manifolds. As we have no engines suitable for any of… | ||
| scan0330 | Cracked exhaust manifolds on Phantom I & 20 HP models, seeking customer cars to test modifications. | ||
| View original record | (8230. To Hm. From Hs/Lid. Hs/Lid.9/MJ.22.7.31. X.8230. X.5230. x4013. QUARTERLY COMPLAINTS. CRACKED EXHAUST MANIFOLDS P.1 & 20 HP. We have several modified types of exhaust manifolds suitable for 20… | ||
| scan0331 | Fitting of modified exhaust manifolds on Phantom I & II models to address cracking issues. | ||
| View original record | COPY. Y8230. X.4013. X.8230. X.5230. To Hs. Derby. SEVRES. Hm/VA3/MLG.28.7.31. QUARTERLY COMPLAINTS Cracked exhaust manifolds Phantom 1 & Phantom 11. With reference to your memo Hs/Lid.9/MJ.22.7.31.… | ||
| scan0332 | Sending various experimental Phantom I and 20 HP exhaust manifolds for testing on customer cars. | ||
| View original record | To Hm. from Hs/Lid. 8830. Hs/Lid.1/AD4.9.31. P.I and 20 HP. EXHAUST MANIFOLDS. X.4013. X.8230. X.5230. We are sending to you under separate cover the following experimental exhaust manifolds:- 1 set… | ||
| scan0333 | Requesting a progress report on the testing of experimental modified exhaust manifolds for Phantom I and 20 HP cars. | ||
| View original record | To Hm. From Hs/Lid. c. to Sg. X8230. Hs/Lid.1/MJ.2.10.31 EXPERIMENTAL MODIFIED EXHAUST MANIFOLDS. X.4613. X.8230. X.5230. We are particularly anxious to obtain some information on the behaviour of the… | ||
| scan0334 | Status of fitting experimental modified exhaust manifolds to two specific vehicles. | ||
| View original record | COPY. X8230. Sevres/Hs/Lid. Hm/VA16/GM.6.10.31. X.4013. X.8230. X.5230. Re. Experimental Modified Exhaust Manifolds. With reference to your memo Hs/Lidl/MJ.2.10.31. the position is this: (1) We are at… | ||
| scan0335 | Testing of exhaust manifold modifications on customer cars. | ||
| View original record | To E. From Hs/Lid. c. to Sg. Wor. c. to PN. 88~30 Hs/Lid.4/MJ.9.10.31. X.4013. X.8230. X.5230. EXHAUST MANIFOLDS. Referring to E.1/M3.10.31 we are attaching herewith copies of memos dealing with this… | ||
| scan0336 | Quarterly complaints memo about cracked exhaust manifolds on Phantom I & 20 HP models, seeking cars for testing modified parts. | ||
| View original record | COPY. Hm. From Hs/Lid. Hs/Lid.9/MJ.22.7.31. QUARTERLY COMPLAINTS. CRACKED EXHAUST MANIFOLDS P.1 & 20 HP. We have several modified types of exhaust manifolds suitable for 20 HP. cars and cast iron head… | ||
| scan0337 | Quarterly complaints of cracked exhaust manifolds on Phantom I & P.2 models. | ||
| View original record | COPY. To Hs. (Derby) SEVRES. Hm/VA3/M.G.28.7.31. QUARTERLY COMPLAINTS. CRACKED EXHAUST MANIFOLDS P.1 & P.2. With reference to your memo Hs/Lid.9/MJ.22.7.31 we think that you will be quites safe in… | ||
| scan0338 | The dispatch of experimental Phantom I and 20 HP exhaust manifolds for testing. | ||
| View original record | COPY. To Hm. From Hs/Lid. Hs/Lid.1/AD4.9.31. P.1 and 20 HP. EXHAUST MANIFOLDS. We are sending to you under separate cover the following experimental exhaust manifolds :- 1 set of 20 HP. manifolds to… | ||
| scan0339 | Request for information and progress reports on tests of experimental modified exhaust manifolds for P.I. and 20 HP cars. | ||
| View original record | COPY. To Hm. From Hs/Lid. c. to Sg. EXPERIMENTAL MODIFIED EXHAUST MANIFOLDS. We are particularly anxious to obtain some information on the behaviour of the modified exhaust manifolds for P.I. and 20… | ||
| scan0340 | The progress of fitting experimental modified exhaust manifolds to a Phantom 1 and another customer's car. | ||
| View original record | COPY. Sevres. Hs/Lid. Hm/VA16/GM.6.10.31. Re. Experimental modified exhaust manifolds. With reference to your memo Hs/Lid/MJ.2.10.31 the position is this: (1) We are at present overhauling a Phantom 1… | ||
| scan0341 | Design, alterations, and testing of exhaust manifolds for various chassis models. | ||
| View original record | COPY. X8230 SG. FROM E. E1/M3.10.31. X8230 X5230 C. to WOR. HS. PN. EXHAUST MANIFOLDS. ---------------------------------------------------------------- Referring to your memo. SG16/E21031., designs… | ||
| scan0342 | Inquiry about the progress of tests on modified P.I. and 20 HP exhaust manifolds. | ||
| View original record | 8230. To Hm. from Hs/Lid. Hs/Lid.5/KT.2.11.31. X.8230. X.5230. X.4013. MODIFIED EXHAUST MANIFOLDS. Will you please let us know the present position and progress of tests on the modified P.I. and 20… | ||
| scan0343 | Status report on the trial of experimental modified manifolds on various customer cars. | ||
| View original record | Copy X8230. X.4013. X.8230. X.5230. Sevres/Works "HS" Hm/VA13/GM.6.11.31. re: Experimental Modified exhaust manifolds With reference to your memo Hs/LiD,5/KT,2.11.31. th present position is this.… | ||
| scan0344 | Quarterly complaints of cracked exhaust manifolds and the decision to issue modified replacements. | ||
| View original record | Ey. from Hs/Lid. Hs/Lid.2/AM8.11.31. X8230 QUARTERLY COMPLAINTS. CRACKED EXHAUST MANIFOLDS. X5230 Owing to the difficulty of testing out 20 HP. and P.I modifications we have decided to adopt the… | ||
| scan0345 | Clarifying the suitability of experimental malleable iron exhaust manifolds for various chassis, correcting a previous statement. | ||
| View original record | X8230 Hm/VA (Sevres) from HsLid. _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Hs/Lid.1/AD23.11.31. _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ EXPERIMENTAL EXHAUST MANIFOLDS. X4015 _ _ _ _ _ _ _ _ _ _ _ _… | ||
| scan0346 | Letter discussing a broken exhaust manifold and choke valve issues on chassis 63-EF, proposing an experimental solution. | ||
| View original record | X8230. P I Exhaust System (Customers Complaints) W/S-C. c to Hs/Lid. Hd/SB8/MW30.12.31. X8230. X4117. Re CHASSIS NO. 63-EF - Fraser Lawton Esq. We are in receipt of your C4/C29.12.31. enclosing a copy… | ||
| scan0347 | Use of a sliding joint manifold to remedy broken manifolds caused by extreme heat on Chassis 63-EF. | ||
| View original record | -2- Chassis 63-EF. Hd/SB8/MW30.12.31. With regard to the last paragraph of your Memo we shall no doubt have to be quite frank with Mr. Lawton and tell him that this is a weakness which we ourselves… | ||
| scan0348 | Experimental modified exhaust manifolds, replacement strategies, and despatch of new parts. | ||
| View original record | X8230. X6015 Y5230 W/Paris. To Hm. from Hs/Lid. Hs/Lid.4/KT.7. 1. 32. EXPERIMENTAL MODIFIED EXHAUST MANIFOLDS. Thank you for your Hm/VA7/GM.30. 12. 31. We should be glad if in your future reports you… | ||