Rolls-Royce Archives
| Identifier | Entry | ||
| scan0001 | Revised calculations for an E.A.C. Dynamo. | ||
| View original record | X9700 19.3.23. X.9700 - E.A.C. DYNAMO (REVISED CALCULATIONS AFTER R1/M2S.2.23). Dynamo must, in hot condition, put up 13.6 volts on open circuit at a speed of 500 r.p.m. As a shunt machine it should… | ||
| scan0002 | Page of calculations for armature and field coil specifications, including resistance and length. | ||
| View original record | -2- Contd. Total number of armature turns = 232 Armature resistance is that of 58 turns in series. Length of mean armature turn (approx) = 13.5" Total length for armature resistance = 58 x 13.5 / 12 =… | ||
| scan0003 | Table detailing magnetic circuit calculations for various electrical components. | ||
| View original record | -3- Contd. (vertical text on left margin: -3-) | Part. | Material. | Length (") | Virtual Section sq. ins. | Total Flux. | Flux density (Inch units) | Flux density (Cm. Units) | H. | A.T. per inch |… | ||
| scan0004 | Calculations for wire winding specifications, including resistance, turns, and current. | ||
| View original record | -4- Contd. Square C.S. area of this wire covered (D.C.C.) = (.056)2 = .00313 inch2 Available C.S. area of winding space estimated to be .875 x .475 = .415 inch2. Hence number of turns = .415 / .00313… | ||
| scan0005 | Specification sheet detailing the principal quantities and calculations for an electrical component. | ||
| View original record | -5- Contd. Principal Quantities. No. of armature conductors = 464 Armature resis. at 100°C = .384 ohm. Field resistance at 80°C = 3.04 ohms. Cutting in point. = 13.6 volts. Field turns = 133 Field… | ||
| scan0006 | Schematics for the EAC.7 chassis rear end components. | ||
| View original record | To BY. from DA. c.c. to BJ. Hs. X9720 DA3/M26.4.26. EAC.7. REAR END. X.7770 X.9720 X.7400 X.7380 X.9380 Herewith we send N.sch.2168/69/70., shewing the rear end of the EAC.7. chassis. N.sch.2168 deals… | ||
| scan0007 | Development of the Goshawk back axle and gearbox for silent operation. | ||
| View original record | To BJ. from R. c. to CJ. Wor. c. to BY. Hs. Y9770 R1/M21.12.22. "GOSHAWK", "SEAGULL", ETC. X.3730. X.9810 X.4219. 770 With reference to the 20 HP. and the photograph, I will get this done as soon as… | ||
| scan0008 | Goshawk and Seagull models, focusing on axle design, gearbox redesign, and experimental production. | ||
| View original record | with the gearboxes, that they become more silent with running. There is another advantage which the Goshawk type has as regard silence, and that is, the axle is less rigidly attached to the frame, so… | ||
| scan0009 | Drawing No.LeC.1658 for the 'Seagull' engine X.9810. | ||
| View original record | To BY. from E. c. to CJ. Wor. Hs. X.9810 E1/M22.12.22. "SEAGULL" ENGINE X.9810: We send you herewith drawing No.LeC.1658 shewing the "Seagull" engine. This drawing is a general arrangement design of… | ||
| scan0010 | Proposed experiment for damping the Hawk-Northcliffe & 'Seagull' power units using flexible arms and friction discs. | ||
| View original record | To Hs. from E. c. to CJ. BY. EP. X9770 E1/M9.1.23. RE. HAWK-NORTHCLIFFE & 'SEAGULL'. X.3408 X.9770* Referring to the experiment for damping the Hawk- Northcliffe power unit Mr. Royce thinks this… | ||
| scan0011 | Prioritizing the 'Seagull' chassis development over the 'Stork' & 'Heron' and expressing concern about front-wheel brakes. | ||
| View original record | To Hs. from R. c. to CJ. BJ. c. to Wor. BY. X9770 R1/M31.1.23. RE. "STORK" & "HERON" CHASSIS X.9770 With reference to your Hs1/LG29.1.23., I fear these might delay "Seagull" at Derby. I prefer to use… | ||
| scan0012 | Confidential memorandum discussing design concerns and arranging a mock-up for the 'Seagull' model bonnet. | ||
| View original record | X9780 Private & Confidential. To EY. from BJ. Copy to: Hr. Hs. "SEAGULL". Confirming our conversation on the telephone at 9-30 a.m. to-day concerning Hr1/H31.1.23, the position briefly is as follows:-… | ||
| scan0013 | Secrecy concerns around using outside coachbuilders for the 'Seagull' project. | ||
| View original record | To BY. from BJ. -2- BJ5/H1.2.23 This should be neither a long nor expensive matter in the waywe want it finished. If we did the work in London we should probably get two coachbuilding carpenters to… | ||
| scan0014 | Telegram from Royce to Hives regarding Seagull engine policy and the Goshawk engines. | ||
| View original record | Roycar Derby. Hives Seagull policy Bring or send Goshawk type 1 here next week but it should be running well as Goshawk type 2. Royce. | ||
| scan0015 | Development direction for the Goshawk and Seagull projects, focusing on chassis and universal joint reliability. | ||
| View original record | To Hs. from R. c. to CJ. X9810 (crossed out) X9770 R1/M7.2.23. RE. GOSHAWK 1 AND SEAGULL. X.9810 X.3481. X.3324 With reference to Goshawk l. I think this should be made into a satisfactory running… | ||
| scan0016 | Preliminary general arrangement drawing N.sch.1374 for the 'SEAGULL' project. | ||
| View original record | X.9810 9770 To BY. from Da. c. to CJ. Wor. Hs. Dal/M9.2.23. "SEAGULL" X.9810. We send you herewith N.sch.1374 - General Arrgt. of Seagull. This drawing is up-to-date at the moment but a good many of… | ||
| scan0017 | Secret memo discussing plans for experimental bodies for EAC and a modified 40/50 chassis. | ||
| View original record | X 4196. X 9770 To Hs. from Da/Ev. Da/Ev2/M20.2.23. SECRET. E.A.C. X.4196. [struck through] I shall be going to London possibly on Thursday next week, and amongst other things we would like to fix up,… | ||
| scan0018 | Test rig for a new method of fixing cheeses on a steering mechanism, replacing a screwed-in trunnion pin design. | ||
| View original record | SECRET Y9770 To Ms. from Da. Da3/M3.3.23. E. A. C. X.9810 X.9470 We send herewith N.sch.1383 which shews a rig for testing the proposed method of fixing the cheeses on the next steering. We should… | ||
| scan0019 | To arrange the purchase of scrap gun mountings and armourplating from Cammell Laird & Co. Ltd. | ||
| View original record | Y9770 Roy. from Hs. E.A.R. Hs5/LG7.3.23. We attach note from B.J. with letter attached from Cammell Laird & Co.Ltd. Sheffield. Will you please get in touch with these people and make the necessary… | ||
| scan0020 | The progress of the E.A.C. job, highlighting delays due to incomplete information. | ||
| View original record | [REDACTED] c. to Hs. X9770 RHC1/DB.21.3.23. We attach hereto a chart showing the position of the E.A.C. job. All the instructions that have been received at Derby are well in hand, in the D.O., the… | ||
| scan0021 | Progress chart tracking the status of vehicle components through different departments. | ||
| View original record | "X" denotes the column or columns to which the section refers. Title of Section. Instructed to Exptl:Dept: In hand in D.O. Waiting W.W. "E" DEPARTMENT Crankcase. X X Crankshaft. X Spring Drive. X… | ||
| scan0022 | Status report for 'P' Department components, tracking their progress through various stages. | ||
| View original record | -2- Title of Section. Instructed to Exptl:Dept: In hand in D.O. Waiting W.W. "P" DEPARTMENT. Frames & Fittings. X X Front Springs. X Rear Springs.(N.Sch:1735). X X Pedals.("N" SCH:1338). X Steering… | ||
| scan0023 | Progress and design specifications for various engine components, including the crankcase, cylinder blocks, and fan drive. | ||
| View original record | To Hs. from E. S E C R E T. X9770 E. A. C. E2/M5.5.23. X.9770 X.9000 X.9050 Many thanks for your memo. Hs2/LG2.5.23. We are expecting Mr. Royce back at WW. on Wednesday evening next. The instructions… | ||
| scan0024 | Meeting with 'R' at Le Canadel, the position of the E.A.C., and instructions for a car. | ||
| View original record | To E. from Hs. To Da. X9770 E. A. C. Hs2/LG2.5.23. We found R. in very good spirits at Le Canadel. I left with him the notes you sent with regard to the position of the E.A.C. This matter was not… | ||
| scan0025 | Secret memo updating on the progress of the new E. A. C. Shop building, equipment installation, and personnel. | ||
| View original record | To CJ. From Hs. To BJ. X9770 Hsl/LGS.5.23. S E C R E T. E. A. C. SHOP. The new building to be used for the E.A.C. is now nearing completion except for the fitting up of the Test Bench, Road Wheel… | ||
| scan0026 | Secret internal memorandum regarding the location and labelling of armour plating. | ||
| View original record | To GJ c. to BJ. X9770 S E C R E T. E. A. C. Hs1/LG10.5.23. With reference to the query raised at the Conference on Tuesday last Re. Armour Plating. I find that the Plating is in the Expl: Dept: yard… | ||
| scan0027 | Internal memorandum from BJ to Hs inquiring about the dispatch date of a case addressed to Lillie Hall that has not arrived. | ||
| View original record | To Hs. from BJ. BJ10/H24.5.23. Re Case addressed to Lillie Hall. You recently advised me that a case had been despatched to Lillie Hall, (E.A.C.) They inform me that it has not yet arrived there. Will… | ||
| scan0028 | Enquiry into the delayed dispatch of a case of E.A.C. parts to Lillie Hall. | ||
| View original record | BJ. from Hs. X9770 Hs2/LG25. 5.23. S E C R E T. E. A. C. We found on making enquiries, that the case of E.A.C. parts which were sent into the Stores on the 5th.inst. was still lying there and had not… | ||
| scan0029 | Secret memo regarding a telephone call to Lillie Hall about the despatch of a case. | ||
| View original record | To Hs. from BJ. BJ9/H31.5.23. X9770 Re E.A.C. (SECRET). We telephoned to Lillie Hall to advise them that the case referred to in Hs2/LG25.5.23 had been despatched, and they asked how it had been… | ||
| scan0030 | The unsealed arrival of a case marked 'SECRET. E.A.C.' and a handwritten response investigating the matter. | ||
| View original record | X9770 SECRET. To Hs. from BJ. BJ6/H2.7.23. A second case marked "SECRET. E.A.C." has arrived, but it is not in any way sealed. Will you please let me know whether it was sealed when it left the Works?… | ||
| scan0031 | Secret memo concerning the sealing of a case of E.A.C. parts using hoop-iron bands. | ||
| View original record | BJ. from Hs. S E C R E T. Y9770 E. A. C. Hsl/LG4.7.23. With reference to the second case of E.A.C. parts which has been received but was in no way sealed. We have made enquiries and find that this… | ||
| scan0032 | Clarifying the sealed condition of two exchanged boxes. | ||
| View original record | 29770 To Hs. from BJ. BJ6/H6.7.23. E. A. C. I gather from your memorandum that the first box you sent us was not sealed, and that the second box you sent was sealed. The first box I received in my… | ||
| scan0033 | List of personnel engaged on E.A.C. work in a specific shop, divided into day and night shifts. | ||
| View original record | S E C R E T. X.9770 CJ. from Hs. Hs3/LG4.9.23. E. A. C. SHOP. We give below a list of men who are now engaged in the above Shop on E.A.C. Work :- DAY SHIFT. Check No. Name. 2473 J. Bradburn. Fitter.… | ||
| scan0034 | Secret memo detailing three types of experimental chassis (EAC.I, II, and III) and their proposed modifications. | ||
| View original record | x 9770 To Hs. from R. c. CJ. BJ. ZWOR. c. BY EP. PN. c. EFC. S E C R E T E. A. C. It has now been decided by Mr. Johnson and myself that we have 3 types of experimental chassis in hand, namely, EAC.l… | ||
| scan0035 | Modification to a component, adding an additional inch between the pads. | ||
| View original record | -2- which has an additional inch between the pads compared with the one already in progress for EAC.I. I hope this modification will cause a suitable axle to be not long in forthcoming. E. | ||
| scan0036 | Engine performance tests, including power curves, vibration, and tappet adjustments. | ||
| View original record | X9770 To R. from Hs. c. to CJ. S E C R E T Hs2/LG29.9.23. E. A. C. X.9771 X.9060 X.9770 Attached herewith is a power curve showing the best power we have so far obtained from the above engine. This… | ||
| scan0037 | The examination of an E.A.C. Engine, detailing points requiring attention. | ||
| View original record | 49770 Hs. from RHC. C. to WOR. C. to By. RE - E. A. C. - ENGINE. We have examined above Engine and give below the main points which require attention. 1. Tubes in Cylinders. These were fitted without… | ||
| scan0038 | Technical report detailing adjustments and issues with engine components including valves, gears, and cams. | ||
| View original record | Contd. RHC2/LS1.10.23. 6. Eccentric Valve Adjustment. As already discussed with you, it will be necessary if this scheme of Valve Adjustment is adopted, that each eccentric Bush is locked… | ||
| scan0039 | Suggested and completed modifications to engine components including guides, tappet rollers, clutch, and joints. | ||
| View original record | Contd. RHC2/LS1.10.23 The Guide is a difficult piece to manufacture because of the very weak section at the mouth, allowing the piece to distort, the taper is very steep being 1 in 6, if this was made… | ||
| scan0040 | Suggesting engine tests with a larger carburettor and modifications to the exhaust/inlets before fitting to a chassis. | ||
| View original record | copy of original. X9770 HS. from R. copies to :- Rg. E. CJ. S E C R E T. R/LG. 3.10.23. X9770 X9950 E. A. C. Have not seen any sheets re. tests of this engine owing to absence from home. To settle… | ||
| scan0041 | The E.A.C. engine detailing findings after dismantling. | ||
| View original record | R.R. 403A (40 H) (SL 42 12-7-23). J.H., D. SECRET *9770 EXPERIMENTAL REPORT. Expl. No. 9770 REF: HSS/LG4.16.10.23. E.A.C. ENGINE. To R. from Hs. c. to CJ. c. to E. We dismantled this engine after it… | ||
| scan0042 | Engine issues including tappet guides, a water pump drive, and torsional vibrations. | ||
| View original record | -2- EXPERIMENTAL REPORT. Expl. No. 9770 REF: He3/LC4.10.23. with the cheese-head screw because of the difficulty of making the joints in the countersunk screw. The large retaining nut in the water… | ||
| scan0043 | Vibration issue and horsepower curve data. | ||
| View original record | R.R. 403A (40 H) (SL 42 12-7-23). J.H.,D. -3- EXPERIMENTAL REPORT Expl. No. 9770 REF: HSS/LG4.10.23. we appear to get a vibration which appears to be similar in character to the high speed vibration… | ||
| scan0044 | Sticking tappets on an E. A. C. engine and the necessary modifications. | ||
| View original record | X9770 To R. from Hs. c. to CJ. c. to E. S E C R E T. Hs9/LGS.10.23. E. A. C. ENGINE. X9770(struck through) X9060 The sticking of the tappets has gradually got worse on this engine until we found on… | ||
| scan0045 | Secret memorandum detailing the construction and disguise of a test vehicle body to avoid identification during trials. | ||
| View original record | 49720 To Hs. from BJ. BJ18/H10.10.23. S E C R E T. E. A. C. With regard to testing E.A.C.1, a body should be built of wood, in the 'holy of holies' if possible, unless the body can be of exactly the… | ||
| scan0046 | Secret memorandum detailing the procedures for fitting and road-testing a new E.A.C.1 engine. | ||
| View original record | To Hs. from B.J. BJ17/H10.10.23. X9720 S E C R E T. E. A. C. With reference to our conversation yesterday, we agree that the E.A.C.1 engine only may be fitted to our present standard chassis, and when… | ||
| scan0047 | Secret memo detailing modifications to the EAC gearbox, engine support, and valve tappets. | ||
| View original record | X9220 To BY. from R. HS. c. to CJ. BJ. S E C R E T. E. A. C. R4/M13.10.23. POWER UNIT - X.9770 X.9320 X.9060 We are arranging to modify the EAC. gearbox so that it can be attached to the engine unit.… | ||
| scan0048 | Modification to E.A.C. engine tappets to resolve a sticking issue and an attached horsepower comparison for various carburetters. | ||
| View original record | To R. from Hs. c. to CJ. c. to E. SECRET. X9770 Hs1/L.H.3.10.23. E.A.C. ENGINE. X9770/X9060 Since we have modified the tappets so that they pull down on to a collar, we have had no further trouble… | ||
| scan0049 | Design schemes sent for ignition wiring, torque reaction dampers, and a modified wheel case. | ||
| View original record | X9770 E.A.C. R2/M13.10.23. To EY. from R. HS. c. CJ. BJ. S E C R E T. X.9770. X.9560. X.9950. X.4604. We have sent you this week the following schemes (complete designs) :- E.A.C. Ignition wiring,… | ||
| scan0050 | Secret memo discussing the design for accessibility of the E.A.C. and Goshawk engines. | ||
| View original record | To CJ. from R. c. to Wor. c. to BY. c. to Hs. X. 9770o S E C R E T. R2/M17.10.23. E. A. C. AND GOSHAWK ENGINES. X. 9770. X,4219 We have gone further than most designers to make the engine units… | ||
| scan0051 | Secret memorandum detailing proposed design changes to a vehicle's back axle, gearbox, and engine. | ||
| View original record | X.9770 To BY. from R. c. to CJ. Wor. RG. Hs. S E C R E T. R3/M1 7.10.23. E.A.C.1. X.9770 Naturally it is proposed that we complete this as designed. We do not think however this will be the final… | ||
| scan0052 | Policy memo discussing modifications and new parts required for the 40/50 chassis, focusing on front wheel brakes and engine options. | ||
| View original record | Wor. 49720 BY10-P19.10.23. RE POLICY. 40/50 CHASSIS. From the discussions which have taken place in regard to the two proposals to modify the 40/50 chassis, certain serious issues obtrude themselves… | ||
| scan0053 | Feasibility of modifying a standard 40/50 chassis into various experimental models. | ||
| View original record | BY10-P19.10.23. contd. - 2 - 3. Dumb Irons and Spring Shackles. 4. New side Steering Tube. 5. Modifications to front Tie Rod of Undertruss for Frame. 6. Modified Brake Equalising Gear for Servo Rear… | ||
| scan0054 | Secret memo detailing three proposed modifications for the E.A.C. 1V project. | ||
| View original record | X9720 RHC. Hs D Dept. [Struck through] E " [Struck through] F " [Struck through] G " [Struck through] BY1-P23.10.23. E.A.C. 1V. SECRET. This will, when started upon, consist of;- (1) Modified E.A.C.1.… | ||
| scan0055 | Overhaul of an E.A.C. engine, listing completed jobs and component conditions. | ||
| View original record | X9770 To Hs. from RHC. RHC3/LS.24.10.23. RE - E.A.C. ENGINE. The above engine has been overhauled, and we give below list of jobs that has received attention. 1. 110° Camshaft Fitted. 2. Umbrella… | ||
| scan0056 | The specifications of different E.A.C. chassis types for the 40/50 car. | ||
| View original record | X9770 EFC/T24.10.23. X.9770 - E.A.C. CHASSIS. The E.A.C.I chassis is the complete original design for the new 40/50 car. The E.A.C.II chassis is the E.A.C.I engine unit together with front wheel… | ||
| scan0057 | The E.A. C.1 engine, detailing camshaft comparisons and fuel distribution issues at the hot-spot. | ||
| View original record | R.R. 493A (40 H) (SL 42 12-7-23). J.H., D. EXPERIMENTAL REPORT. X9770 Expl. No. 9770 REF Hs/LC29.10.23. To R. from Hs c. to CJ. c. to E. S E C R E T. E. A. C.1 ENGINE. X9090 X9770 We attach herewith a… | ||
| scan0058 | Graph of power output and consumption for an E.A.C. engine with a Knave carburetter, comparing 110° and 118° camshafts. | ||
| View original record | E.A.C. POWER OUTPUT & CONSUMPTION WITH KNAVE CARBURETTER. (PET. CON BY DIRECT MEASUREMENT). BAR = 754 M/M. PETROL. SHELL MEX. AIR TEMP = VALVE TIMING 110º CAMSHAFT .010" TAPPET CLER T.C. I.O. 2º E.C.… | ||
| scan0059 | The investigation of the EAC.1. Engine. | ||
| View original record | R.R. 493 (40 H) (SL 42 12-7-23). J.H., D. X9770 EXPERIMENTAL REPORT. COPIES TO: RCJ Bd. WOR. By E. Da. SP. PN. OV. RG Expl. No.X. 9770 Handwritten: X. 9771 REF. Hsl/LG14.11.23. OBJECT OF TEST.… | ||
| scan0060 | Comparing the thermal efficiencies and heat distribution of an EAC.1 engine and a standard 40/50 engine. | ||
| View original record | R.R. 498A (20H) (D.A. 652 20-3-24) J.H.D. -1- Expl. No. 9771 9770 REF: Hs1/LG14.11.23. EXPERIMENTAL REPORT. THERMAL EFFICIENCIES AND HEAT DISTRIBUTION OF EAC.1. ENGINE & STD. 40/50 RR. COMPARED. The… | ||
| scan0061 | Heat distribution and thermal efficiency test data for an EAC.1 engine with a standard induction system and Knave carburetter. | ||
| View original record | HEAT DISTRIBUTION & THERMAL EFFICIENCY OF EAC.1. ENGINE. PAGE 1. 1 KNAVE CARBURETTER - STD. EAC. INDUCTION SYSTEM. Fuel - shell No. 2. Spgr. - .759 Cal. Val. (lower) = 19000 B.Th.U's/Lb. Bar: - 757… | ||
| scan0062 | Tabulated heat distribution data, expressed as a percentage of heat supplied for two different engine tests. | ||
| View original record | PAGE 2. HEAT DISTRIBUTION CONTD :- EAC.1. Expressed as % of heat supplied. | R.P.M. | Heat supplied. | Th.Equvt. Wk. done. | Loss to friction. | Loss to jackets. | Exh: Radiation and pumping (diffce).… | ||
| scan0063 | Comparison of efficiencies for the 40/50 HP RR and EAC.1 models, including valve timing data. | ||
| View original record | PAGE 5. COMPARISON OF EFFICIENCIES OF STD. 40/50 HP. RR. & EAC.1. WITH THE 'AIR STANDARD' EFFCY: 40/50 RR. Comp. ratio = 3.99 EAC.1. " " = 4.6 'AIR STD' = 1 - 1/R^(r-1) | R.P.M. | Indicated Thermal… | ||
| scan0064 | E.A.C-1 engine investigations concerning the boiler and hot-spot draining scheme during cold starts. | ||
| View original record | R.R. 493 (40 H) (SL 42 12-7-23). J.H., D. X9770 EXPERIMENTAL REPORT. COPIES TO: R.CJ. BJ. WOR. By. E. Da. EP. PN. OY. Expl. No. X9770 9070 REF. Hsl/LG16.11.23. OBJECT OF TEST. E.A.C-1 ENGINE… | ||
| scan0065 | The E.A.C-1 induction system and hot-spot experiments. | ||
| View original record | R.R. 403A (40 H) (SL 42 12-7-23). J.H., D. EXPERIMENTAL REPORT. Expl. No. REF: T.M/ADX1/12.7.23.11. REPORT ON THE E.A.C-1 INDUCTION SYSTEM AND EXPERIMENTS ON THE HOT-SPOT. The tests were carried out… | ||
| scan0066 | Engine distribution and the performance of the standard E.A.C. hot-spot. | ||
| View original record | R.R. 493A (40 H) (SL 42 12-7-23). J.H.D. -2- EXPERIMENTAL REPORT. Expl. No. REF: Hs/AGL1/L.G1(6)123 (1) DISTRIBUTION. From consideration of the petrol consumption and power output at low speeds with… | ||
| scan0067 | Comparing the performance of different engine hot-spot types and materials based on petrol precipitation. | ||
| View original record | R.R. 499 A (40 H) (SL 42 12-7-23). J.H., D. -3- EXPERIMENTAL REPORT. Expl. No. REF: Hs/ACL1/LG1611.2 supplied if the mixture is strong and the hot spot is not at its maximum running temperature. If… | ||
| scan0068 | Summarising tests on the efficiency of an aluminium hot spot compared to cast iron. | ||
| View original record | R.R. 403A (40 H) (SL 42 12-7-23). J.H., D. EXPERIMENTAL REPORT. Expl. No. REF: Hs/ACL1/16.11.23 under the same conditions gave only .2 pts/hr. By increasing the heat supply to the aluminium no… | ||
| scan0069 | From 'R.' outlining imperative conditions and arguments against the design of a 4-speed gearbox. | ||
| View original record | To CJ. from R. c. to BJ. RG. Wor. c. to BY. HS. EP. c. to PN. C. SECRET X9770 (handwritten) E. A. C-1. E. A. C-11. AND 40/50. X9770 (handwritten) X2565 (handwritten, crossed out) R1/M23.11.23. To… | ||
| scan0070 | Arguments for a 3-speed gearbox over a 4-speed gearbox for car models. | ||
| View original record | contd:- -2- (8) It would be better to make one or two less cars which are less costly and superior, than to make the few extra ones that we may otherwise lose because we only had 3 gears. (9) Our… | ||
| scan0071 | Tests conducted on an E.A.C-1 engine, detailing valve stretching and recommendations for rebuild. | ||
| View original record | X9770 R.R. 493 (40 H) (SL 42 12-7-23). J.H., D. EXPERIMENTAL REPORT. COPIES TO: R.CJ. BJ. WOR. By. E. Da. EP. PN. OY. Expl. No. 9770 9060 REF. Hs5/LG26.11.23. OBJECT OF TEST. Tests on E.A.C-1 Engine.… | ||
| scan0072 | The failure of umbrella valves on the E. A. C-1 engine. | ||
| View original record | R.R. 493 A (40 H) (SL 42 12-7-23). J.H. D. EXPERIMENTAL REPORT. Expl. No. 9770 9060 REF: Hs5/LG26.11.23. FAILURE OF UMBRELLA VALVES (E.70818) ON E. A. C-1 ENGINE. All the exhaust of this type on the… | ||
| scan0073 | Inadequate heat flow path and torsional failure of E.A.C. valve springs. | ||
| View original record | contd:- -2- These results seem to indicate that the path for the heat flow from the head to the valve seat is inadequate. E.A.C. VALVE SPRINGS. We have had three cases of breakage. In each case the… | ||
| scan0074 | Bump tests conducted on a 40/50 chassis with 4-wheel brakes. | ||
| View original record | S.E. 493 (40 H) (SL 42 12-7-23). J.H., D. X9770 EXPERIMENTAL REPORT. COPIES TO: RCJ BJ. WOR. By E Da EP. PN. OY. RG Expl. No. 1331 REF. Hs/LG26.11.23. OBJECT OF TEST. Bump tests on 40/50 chassis with… | ||
| scan0075 | 40/50 HP vehicle bump test detailing component failures over time. | ||
| View original record | R.R. 403A (40 H) (SL 42 12-7-23). J.H., D. EXPERIMENTAL REPORT. Exptl. No. 9770 1331 REF: Hg/LG26.11.23. BUMP TEST - 40/50 HP. New scheme of Front Axle and Brakes (C.71030), Steering (C.71205) Radius… | ||
| scan0076 | Failures of a front spring, buffer spring, and steering pendulum arm during testing. | ||
| View original record | R.R. 498A (40 H) (EL 42 12-7-23). J.H. D. 9770 Expl. No. 1331 REF Hs/LG26.11.23. EXPERIMENTAL REPORT. Total running time | Running time. | Piece No. | PARTICULARS. 27 35 | 12 38 | F.70328 | Near side… | ||
| scan0077 | Standardization of parts for the 40/50 chassis, referencing car EAC.11 and a 10,000-mile test run in France. | ||
| View original record | c. Ed. c. Wor. c. Hs. X9770 3 BY2-P28.11.23. X9770 X9940 X9941 X.9660 PRESENT 40/50 CHASSIS. Referring to R5/M211123, the position in regard to the improvements you enumerate in connection with the… | ||
| scan0078 | Unsatisfactory dynamo components and potential modifications, including adopting a belt drive. | ||
| View original record | BY2-P28.11.23. contd. - 2 - driven type in place of the Lucas. There appear, however, to be certain points in connection with the Dynamo which have not been satisfactory, namely, the one piece cast… | ||
| scan0079 | The accessibility of lubricators for various components on model E.A.C.-111. | ||
| View original record | x9770 To BY. from Hs. c. to Da. Hs1/LG30.11.23. ACCESSIBILITY OF LUBRICATORS ON E.A.C.-111 x740 x9770 Pivot pins - lubricators will have to be at right angles, also detachable to enable cap to be… | ||
| scan0080 | Outlining design modifications for proposals E.A.C.11 and E.A.C.111, affecting material orders and component design. | ||
| View original record | COPY. X9770 "" B "" Dept. "" R "" "" D "" c. Wor. c. Wd. c. Wd/Ms. c. SFT. c. Hs. c. Mr Coverley. BY2-P13.12.23. E.A.C.1. 11. & 111. Referring to my previous memo BY7-P161023, outlining what the… | ||
| scan0081 | Modifications to the E.A.C.11 chassis, including a new engine, starter, gearbox, and brakes. | ||
| View original record | BY2-P13.12.23. contd. - 2 - quoted above, E.A.C.11, now consists of;- a/- E.A.C.1. Engine mounted similar to the 20HP, in the chassis and fitted with an engine vibration damper b/- A new Starter Motor… | ||
| scan0082 | Cover letter enclosing a rough draft of notes for an upcoming meeting and requesting feedback. | ||
| View original record | X9770 TO BY. - from Wor. (BY. is struck through) " Hs. - " " Wor2/M14/12/23. X9770 X9770 I attach hereto rough draft of some notes I have prepared for myself for Monday next, when I meet R. and CJ. I… | ||
| scan0083 | Production and testing programme for 1924, including chassis trials, delivery schedules, and material supply issues. | ||
| View original record | PROGRAMME FOR 1924. E.A.C.III. There seems reasonable chance of having chassis ready for the 10,000 miles trial by the middle of January. Tests should be through early in February, or certainly… | ||
| scan0084 | Performance and limitations of 4-wheel brakes and the EAC-1 engine. | ||
| View original record | To CJ. from Hs. c. to BJ. c. to Wor. c. to Rg. c. to FN. X9770 Hs1/LG20.12.23. BRAKES - AND EAC-1 ENGINE. X9940 [crossed out] X9770 During our recent visit to WW. it was evident that R. was more… | ||
| scan0085 | Testing of 4-wheel brakes, Hispano brakes, and the EAC-1 engine. | ||
| View original record | contd:- -2- 4-wheelbrakes similar to those more-or-less approved by R. We consider they ought to try them - they should also try the Hispano brakes. At the present time some of the brake units off the… | ||
| scan0086 | Secret memo from CJ to Hs regarding potential issues with a new engine and plans to test a chassis in France. | ||
| View original record | To Hs. from CJ. SECRET. X9770 CJ8/E31.12.23. X.9680 X.9770 With reference to the new engine, you say that there are parts which you think will give trouble and which need alteration and that it is not… | ||
| scan0087 | Failures in steering gear, front springs, and frame brackets, comparing different designs. | ||
| View original record | S E C R E T To Hs. from Da. c.c. to BY. c.c. to E. A. C. DA4/M4.1.24. X.9770 X.9940. Referring to your HS2/LG2.1.24., and the reported failures of the steering gear with radius rods, you will no doubt… | ||
| scan0088 | From CJ to Hs expressing frustration over the lack of response and the slow pace of the Experimental Department. | ||
| View original record | SECRET. To Hs. from CJ. I do not understand why I have had no reply to my memo. asking what parts of the new engine are likely to fail. It seems to me that in the Experimental Department the spirit,… | ||
| scan0089 | Initial road test performance and faults of the experimental EAC-1 engine. | ||
| View original record | To CJ. from Hs. X9770 Hs1/LG10.1.24. I regret not having replied to your question of - what parts are likely to fail on the EAC-l engine. My excuse is that it is a very difficult question to answer.… | ||
| scan0090 | Listing engine faults and discussing the experimental department's procedures and past failures. | ||
| View original record | -2- 4. Bad oil leak from rear end of crankcase. 5. Noisy drive to Magneto. 6. Carburetter suction noisy. 7. The new engine demands new steering. This so far is not as good as the present 40/50… | ||
| scan0091 | Defense of the author's critical approach towards experimental work, arguing it aids progress. | ||
| View original record | contd:- -3- I feel very disappointed that when I am given the position of a critic that when my criticism is not of an optimistic nature, I should be accused of obstruction. The fact that we foresee… | ||
| scan0092 | Meeting notes from the design committee regarding the EAC.3 chassis, specifically steering lock and front springs. | ||
| View original record | Y9770 To CJ. & R. c. to RG. E. DA. c. to Wor (from Rg.) c. to BY { " " } c. to Hs. { " " } VISIT OF RG. AND HS. TO WW. TUESDAY 8.1.24. E1/M10.1.24. X.9940 X.4247 X.4260 X.9770 The following notes were… | ||
| scan0093 | Discussions on 4-wheel brakes, 20 HP frame length, side lever gearbox, and patents. | ||
| View original record | contd:- -2- test should be fitted with the new speedometer drive and the best 4 wheel brakes we know of at the time, but it should not wait for any further alterations. It was further suggested that… | ||
| scan0094 | The testing of the E.A.C. engine and its preparation for installation into 40/50 HP cars. | ||
| View original record | R.R. 493 A (40 H) (EL 42 12-7-23). J.H., D. X9770 EXPERIMENTAL REPORT. Expl. No. 9770 REF: Hs5/LG11.1.24. To R. from Hs. c. to CJ. RG. c. to DA. BY. c. to E. S E C R E T. E.A.C. ENGINE. X.9680 X.9770… | ||
| scan0095 | Engine issues including detonations, magneto noise, and valve spring breakages, with proposed solutions. | ||
| View original record | R.R. 493A (40 H) (SL 42 12-7-23). J.H. D. -2- EXPERIMENTAL REPORT. Expl. No. 9770 9680 REF: Hs5/LG11.1.24. running about, detonations have now become more pronounced especially with the magneto. Until… | ||
| scan0096 | Secret internal memo detailing progress at West Wittering (WW) and clarifying EAC nomenclature for various chassis configurations. | ||
| View original record | To R. from E. c. to CJ. RG. HS. X9720 S E C R E T. E1/M16.1.24. E. A. C. X.9940 X.3528 X.9770. X.4247. RE. PROGRESS AT WW. We are sorry to have appeared neglectful of sending proposals of what shall… | ||
| scan0097 | Internal report detailing the status of various EAC models, gearboxes, and chassis designs. | ||
| View original record | contd:- -2- EAC.5. Our revised EAC.1. e.g. As EAC.4. but with open propeller shaft and 20 HP. type rear axle control. We are sending a copy of a more detailed list got out at Derby. EAC.1. has been… | ||
| scan0098 | Steering and front spring breakages, with proposed solutions and test suggestions. | ||
| View original record | 49770 To R. from DA. c. to CJ. HS. RG. S E C R E T. DA1/M16.1.24. E. A. C. X.9770 X.9410 X.9420 X.943 Referring to R2/M16.1.24., I am sorry that we did not realise that you were expecting us to send… | ||
| scan0099 | Car performance, driving conditions, and technical issues like detonations and valve springs. | ||
| View original record | To HS. from R. c. to CJ. BJ. WOR. RG. BY. E DA. X9770 SECRET. E. A. C. ENGINE. R1/M18.1.24. K.9770 K.4219 I was very pleased to receive your report of the progress made. As regards the car for here… | ||
| scan0100 | Brake servo adjustments, pedal pressure, and the effect of unequal braking on steering. | ||
| View original record | To R. from DA. c. to HS. 49770 Dal/M19.1.24. BRAKES. X.9940. X.9770. Referring to Hs4/LG17.1.24. We should like to say that we went into the question of pulling up the rear brakes by the pedal through… | ||
| scan0101 | The testing and performance of the 3rd E.A.C. engine, including modifications and fuel detonation analysis. | ||
| View original record | R.R. 493 A (40 H) (SL 42 12-7-23). J.H., D. 49770 EXPERIMENTAL REPORT. Expl. No. 9970 9680 REF Hs1/LG19.1.24. To R. from Hs. c. to CJ. RG. c. to E. DA. c. to BY. S E C R E T. E. A. C. We have been… | ||
| scan0102 | Ignition timing settings and the requirement for automatic advance on the EAC model. | ||
| View original record | contd:- -2- Hsl/LG19.1.24. we require approximately the same as we do on the 20 HP. We can obtain maximum power on the 40/50 with Magneto ignition set at 23° B.T.D.C. for the advance. On the EAC. we… | ||
| scan0103 | Secret memorandum outlining strict procedures for handling bonnet keys for cars with a new engine to prevent financial loss. | ||
| View original record | B. H. 950 a (20 T) (S.B 9/4. 5-9-19. C). 2470. SECRET. X9770 To Hs. from CJ. CJ15/E21/1/24 .................... We are nearing the time when chassis with the new engine may be handed over by your… | ||
| scan0104 | Recommendations to modify the flywheel inspection cover and add a drain hole for the E.A.C-1 engine. | ||
| View original record | To E. from Hs. c. to DA. c. to BY. X9770 Hs2/LG22.1.24. SECRET. E.A.C-1 ENGINE. X9300 X9770 We find that the inspection cover in the top half of the cover for the flywheel is not in the most… | ||
| scan0105 | Clarifying development priorities for a new 4-speed gearbox and a large reduction servo for the four-wheel brakes. | ||
| View original record | X9770 To E. from CJ. Copy to R. Copy to Wor. Copy to Rg. Copy to Da. Copy to Hs. Handwritten notes: This is duplicate memo sent to you. Reg Ms at Derby y'day. If you did not receive it, would you… | ||
| scan0106 | Secret internal memorandum discussing the allocation of production resources between projects EAC.IV and EAC.II. | ||
| View original record | SECRET. CJ27/E22/1/24 - 2 - box with the large reduction servo contemplated under EAC.IV. Only such surplus energy as cannot be employed helpfully on the two items above referred to should be devoted… | ||
| scan0107 | Secret memorandum detailing the progress and design status of the EAC.4 gearbox and related components. | ||
| View original record | To CJ. & R. from E. c. to Wor. RG. Hs. S E C R E T K9770 E.A.C. 2 and 4. E1/M25.1.24. X. 9320 X. 9770 In reply to CJ27/E22.1.24, would you kindly note that we received letters and telegrams from Derby… | ||
| scan0108 | Allocation of design and engineering work for the EAC and EAC.1V projects, specifically relating to the engine, electricals, brakes, and chassis. | ||
| View original record | contd:- -2- Under these circumstances we suggest that the only items on which extra help could be usefully employed are (3) and (4), and these could be produced by E. and F. design sections… | ||
| scan0109 | Letter discussing views on slow speed servo brakes and other braking systems. | ||
| View original record | To CJ. from R. c. to RG. E. DA. Hs. PN. BJ. BY. Wor. 49770 La Villa Mimosa, Le Canadel, Var. France. X.1559. X.9770 X.9940. Jan. 27th. 1924. I am writing this to you to save postal time, and that you… | ||
| scan0110 | Secret memo discussing the features and production priority of chassis models EAC.1 to EAC.5. | ||
| View original record | To BY. RG. ) FROM R. E. DA. ) c. to CJ. BJ. WOR. HS. X9770 R4/M28.1.24. SECRET. RE. EACs. 1. to 5. SYMBOLS AND DESCRIPTION. X. 9770 X. 9940 The above as given in BY's list of 14.1.24 seems O.K. re.… | ||
| scan0111 | From CJ to Wor. discussing the delivery date for trials cars. | ||
| View original record | COPY. To Wor. from CJ. CJ12/E28/1/24. I enclose copy of memo sent to R. today . Is this too pessimistic or do you think that by concentration the date of the delivery by Derby of the trials cars to… | ||
| scan0112 | Letter from CJ to R discussing brake issues, gearbox production, and chassis delivery timelines for a show at Olympia. | ||
| View original record | COPY. To R. from CJ. CJg/E28/1/24. My dear R., Many thanks for your telegram of the 26th. your letter of the 26th. and your telegram of this morning. I am very concerned to think that you should have… | ||
| scan0113 | Secret memo from 'Wor.' forwarding a memo from 'CJ.' to 'L.' and 'Hs.' for their opinion and a possible meeting. | ||
| View original record | X9770 To L. - from Wor. " Hs. - " " SECRET. Wor/M29/1/24. I enclose herewith copy of memo CJ. has sent me this morning. Will you kindly give me your opinions on this, or perhaps we might meet and have… | ||
| scan0114 | Cover note for a summary of general notes regarding production engines EAC.1, 2, 4 and 5. | ||
| View original record | c. to Hs. +9770 BY/SS1/DB.6.2.24. RE EAC.1, 2, 4 and 5. GENERAL NOTES REGARDING PRODUCTION ENGINES. We have been going through our notes regarding the above, and think the attached summary would be… | ||
| scan0115 | Technical notes and decision points for various chassis and engine components for EAC models 1, 2, 4 and 5. | ||
| View original record | NOTES. EAC. Except where otherwise stated, these notes refer to EAC.1, 2, 4 and 5. Chassis. Description. Decision to be made by Crankcase & Bearings. We have definitely instructed oil supply to all… | ||
| scan0116 | Engineering query and decision log regarding various chassis components. | ||
| View original record | -2- Chassis. Description. Decision to be made by Cylinder contd. Shall we add monogram R.R. to Rocker Cover and Water Jacket Covers? By and Hs. Are wedges fitted on parallel tubes? Exptl:Dept: Valves… | ||
| scan0117 | Technical query and decision list regarding various chassis components. | ||
| View original record | -3- Chassis. Description. Decision to be made by Dynamo & Magneto Drive. Are existing couplings satisfactory? Expt'l:Dept: Which Damping springs E.70894/5/6/7. E.52510/1/2/3. Expt'l:Dept: Water Pump… | ||
| scan0118 | List of queries and decisions to be made regarding various chassis components and fittings. | ||
| View original record | R.R. 63 (50 T) (S.D. 408. 26-4-17.) Bm. 2/156/14. -4- Chassis. Description. Decision to be made by Water Connections. There will be different top water "E" D.O. Connections for EAC.I & II and EAC.4 &… | ||
| scan0119 | List of required design decisions and comments for various chassis components. | ||
| View original record | -5- Chassis. Description. Decision to be made by Starting Carb: Comments on making the autovac connection from the starter carb:body. Starting Handle. Slightly different lengths for EAC.1, 2, 4 and 5.… | ||
| scan0120 | Confidential memo regarding sending a draughtsman to Le Canadel and the potential delay to EAC.3 and EAC.1V chassis designs. | ||
| View original record | X9770 To CJ. from DA and E. c. to WOr. RG. BY. HS. CONFIDENTIAL. E1/M8. 2. 24. RE. DRAUGHTSMAN FOR LE CANADEL. X.9770 XX.1775 X.1031. Referring to the above we should like to make it clear that the… | ||
| scan0121 | Technical improvements for the E.A.C. engine regarding compression, smoking, ignition and the starting handle. | ||
| View original record | X9770 SECRET. R3/M9.2.24. To HS. RG. } FROM R. E. DA. } c. to CJ. BJ. Wor. PN. BY. EP. E.A.C. ENGINE. X.9770. Many thanks for your report (1.2.24) of the above with suggestions. COMPRESSION. X.790. I… | ||
| scan0122 | Security protocol for handing over keys to chassis fitted with EAC engines. | ||
| View original record | X9770 To Hs. from CJ. CJ8/E12/2/24 With reference to the arrangement by which the keys of eh chassis fitted with EAC. engine should not be [crossed out text] handed over until the recipient has signed… | ||
| scan0123 | Secret memo regarding a receipt from a mechanic and an update on a car with an EAC engine in the Experimental Department. | ||
| View original record | X9770 To CJ. from Hs. S E C R E T. Hs1/LG13.2.24. With reference to your CJ8/E12.2.24. We have a receipt from PN. and also from Lauro, the mechanic with him, made out in the form instructed by you.… | ||
| scan0124 | Secret memo about the EAC engine's weight and power, outlining targets for weight reduction and performance enhancements. | ||
| View original record | To E. from R. c. to CJ. c. to HS. c. to BY. SECRET. RE. EAC. ENGINE WEIGHT AND POWER. This is 122 lbs. heavier than the 40/50. Nearly all is in the crankchamber, clutch and flywheel. I think when time… | ||
| scan0125 | Secret memo providing design feedback on Mr. Stent's servo drawing for the EAC.4 gearbox. | ||
| View original record | X9770 To Mr. Stent RG. E. DA. } FROM R. copy to CJ. BY. HS. S E C R E T. R3/M15. 2. 24. SERVO FOR EAC. 1, 2, 3, 4 & 5. X. 9770 X. 9940 X9910 Re. LeC.1827. - Mr. Stent's drawing of the servo applied to… | ||
| scan0126 | Continued discussion on lever design, weight reduction with aluminium, and alignment improvements. | ||
| View original record | contd. -2- through to drive the speed indicator in the newer cars? (8) There is a lever called 'B' - i.e. pull rod from servo. This lever looks heavy towards the hub, and also the bushed end with bolt… | ||
| scan0127 | Investigations into retard vibrations in the EAC engine and the effect of modifying the driveshaft. | ||
| View original record | R.R. 403A (40 H) (SL 42 12-7-23). J.H., D. Y9770 Expl. No. 9770 / 634 REF: Hs2/LG16.2.24. EXPERIMENTAL REPORT. To R. from Hs. c. to CJ. RG. c. to E. Wor. c. to DA. BY. S E C R E T. EAC. ENGINE. Retard… | ||
| scan0128 | Explaining a delay in sending out new designs for front springs and axles due to a priority shift between projects. | ||
| View original record | To R. from DA. C. to CJ. Wor. RG. Hs. BY. X9770 S E C R E T. DA1/M19.2.24. E. A. C. X.9770 X.9410 Referring to your remarks re prints from my department in a memo. on front springs, we sent away at… | ||
| scan0129 | Secret memorandum detailing a visit to discuss designs for the EAC.3 slow speed servo, brake gear, and hand starting shaft. | ||
| View original record | X9770 To C.J. & R. from DA/E. c. to Wor. Rg. By. Hs. S E C R E T. E. A. C. RE. VISIT OF RG. TO WW. ON 19.2.24. The whole of the designs of the EAC.3. slow speed servo scheme covering the modified… | ||
| scan0130 | Telegram detailing a compromise to postpone production of E.A.C. four and modify the starter motor location on E.A.C. two. | ||
| View original record | [text struck through] from Wor. [text struck through] - " " Hs. - " " X9770 Wor1/M22/2/24. The following is copy of telegram I have received:- " Marseille. 22/2/24. " Wormald, Rolls-Royce, Derby,… | ||
| scan0131 | Secret memorandum discussing three troubles: Hispano brake patents, steering shocks, and a heated dynamo. | ||
| View original record | To RG. E. DA. from R. c. to CJ. HS. BY. X9770 S E C R E T. E. A. C. R2/M23.2.24. X.9770 X.4214 X.9940. You will see by my telegram that we seem still in trouble to get EAC.3. satisfactory, in spite of… | ||
| scan0132 | Suggesting improvements for the front brakes on the 40/50 HP car. | ||
| View original record | R.R. 493A (40 H) (SL 42 12-7-23). J.H., D. EXPERIMENTAL REPORT. To R. from Hs. c. to CJ. RG. c. to Da. E. c. to BY. Wor. +9770 Expl. No. 9940 9770 REF: Hs1/LG23.2.24. S E C R E T. BRAKES. We have now… | ||
| scan0133 | Recommendations for braking and steering components. | ||
| View original record | R.R. 493A (40 H) (SL 42 12-7-23). J.H. D. -2- EXPERIMENTAL REPORT. Expl. No. 9940 REF:hsl/LG23.2.24. (4) On the pivot which carries the steering lever, two of the nuts which hold the brake on to the… | ||
| scan0134 | Comparing detonation in Hispano and EAC engines. | ||
| View original record | R.R. 403A (40 H) (SL 42 12-7-23). J.H., D. EXPERIMENTAL REPORT. To R. from Hs. c. to CJ. RG. c. to E. DA. c. to BY. WOR. Expl. No. X9770 REF: Hsl/LG26. 2.24. SECRET E. A. C. Detonation. The Hispano… | ||
| scan0135 | Telegram from Marseille regarding the postponement of production and the relocation of a starter motor. | ||
| View original record | R.(into his Garrett) C.L. C.J. C.Hsr. C.Hy. C.Hs. C. Fg & Ds. Y9770 Rg1/W26. 2. 24 Re TELEGRAM FROM MARSEILLE DATED 22.2.24 The telegram referred to reads as follows:- “WORMALD ROLLS-ROYCE DERBY… | ||
| scan0136 | Production of model ERC.II and proposed modifications to the starter motor and gearbox. | ||
| View original record | x9770 SECRET R3/M29.224. To E. & EFC. from R. c. CJ. BJ. RG. WOR. DA. HS. BY. EAC.II & IV. X.9320. X.9620. X.9650. X.9770. Owing to output considerations Mr. Johnson and I arranged that this model… | ||
| scan0137 | Secret memo discussing production strategy, advocating to bypass the EAC.4 model in favour of the EAC.5. | ||
| View original record | X.9770 To CJ. BJ. from R. c. to Wor. E. Da. RG. BY. Hs. S E C R E T. R4/M29.2.24. EAC. II. AND IV. X.9770 Since there is reason that EAC.2. may be in production for some time, does it not appear more… | ||
| scan0138 | Secret internal memorandum regarding EAC.II and IV, agreeing to Mr. Royce's earlier memorandum. | ||
| View original record | X9770 To Bl. from CJ. To Her. from CJ. To E. from CJ. To Ds. from CJ. To Eg. from CJ. To Pl. from CJ. To Hc. from CJ. SECRET. EAC.II and IV. CJ20/ES/3/24 Please note that I agree to Mr. Royce's… | ||
| scan0139 | Production programme for 'T' Series and EAC.II chassis, including brake fitting and delivery schedules. | ||
| View original record | 49770 To Wor. from CJ. c. to Rg. c. to Hs. re Programme. CJ11/E6/3/24 1. Are we right in believing that up to No.50 'T' Series the chassis issued will be precisely similar to the chassis which we were… | ||
| scan0140 | From CJ to Wor. regarding a production gap and authorizing material for 50 Series 'U' EAC.III chassis. | ||
| View original record | To Wor. from CJ. There is, therefore, a gap of the months of September and October for which no [strikethrough]production[/strikethrough] provision has been made so far as material is concerned. The… | ||
| scan0141 | Secret memo discussing whether to send E.A.C. engine test reports to Springfield. | ||
| View original record | To CJ. from Hs. X9770 Hs1/LG11. 3. 24. S E C R E T. E. A. C. In view of the fact that Springfield have been sent arrangement drawings of the E. A. C. engine - are we in order in sending to them… | ||
| scan0142 | Secret memo from Hs. to CJ. regarding the distribution of E.A.C. engine test reports to Springfield. | ||
| View original record | X9770 To CJ. from Hs. Hsl/LG11.3.24. S E C R E T. E. A. C. In view of the fact that Springfield have been sent arrangement drawings of the E.A.C. engine - are we in order in sending to them reports in… | ||
| scan0143 | Test bench run to obtain data on a Hispano engine. | ||
| View original record | H.R. 493 (40 H) (SL 42 12-7-23). J.H., D. X9770 EXPERIMENTAL REPORT. COPIES TO: [strikethrough]ROJ[/strikethrough] [strikethrough]WOR.[/strikethrough] [strikethrough]Py,[/strikethrough]… | ||
| scan0144 | Comparing the specifications and power output of Hispano and E.A.C. engines. | ||
| View original record | R.R. 403A (40 H) (SL 42 12-7-23). J.H., D. EXPERIMENTAL REPORT. Expl. No. 4214 9770 REF: Hs/ACL/LG. 11.3.24. COMPARISON OF HISPANO AND EAC. ENGINES. HISPANO. E.A.C. Bore and stroke. 3.938 X 5.512 .425… | ||
| scan0145 | Distribution and the effects of dual ignition on a Hispano engine. | ||
| View original record | R.R. 403A (40 H) (SL 42 12-7-23). J.H., D. -2- 11.3.24. EXPERIMENTAL REPORT. Expl. No. 4214 9770 REF: Hs/ACL/LG. DISTRIBUTION. Good - with slight tendency for central cylinders to richen as speed… | ||
| scan0146 | Indicator work and efficiency tests carried out on a Hispano engine. | ||
| View original record | R.R. 493A (40 H) (SL 42 12-7-23). J.H., D. EXPERIMENTAL REPORT. Expl. No. 4214 4580 REF: HsXEM/LGL2.3.24. HISPANO INDICATOR WORK. We have carried out tests on the Hispano engine with the original… | ||
| scan0147 | Continued memorandum discussing indicator valve positioning, detonation, and volumetric efficiency. | ||
| View original record | contd:- -2- In this position one would say that the indicator valve is likely to get the full benefit of any detonation set up. We are still not entirely satisfied with the vol. efficiency at low… | ||
| scan0148 | Hispano indicator diagrams taken at 1500 and 2500 RPM. | ||
| View original record | R.R. 403A (40 H) (SL 42 12-7-23). J.H., D. EXPERIMENTAL REPORT. Expl. No. 4214 4580 REF: Hs/Rm/LG12.3.24 HISPANO INDICATOR DIAGRAMS TAKEN AT 1500 AND 2500 R.P.M. On these diagrams we have plotted the… | ||
| scan0149 | Indicator diagram for a Hispano engine cylinder, plotting pressure against piston displacement for various crank angles. | ||
| View original record | Top Left Box: ONE KLG PLUGS RECORDED ONE PLUG ONLY IS USED Top Right Box: O.2 Spring Used—Rating 91.5 Diagram Area 12.05□ Engine HISPANO Cyl. No. 6 Air Temp. 12°C Bar Temp. 765 m/m Cooling Water Temp.… | ||
| scan0150 | Performance indicator diagram for a Hispano engine, plotting piston displacement against crank angles. | ||
| View original record | 6.2 Spring Used—Rating 91.5° Diagram Area 10.3 □ Engine HISPANO Cyl. No. 6 Air Temp. 12°C Bar Temp. 765 m/m Cooling Water Temp. 80°C R.P.M. 2500 Lbs. Lift 108 H.P. 112.8 I.M.E.P. 118 Lbs/□" B.M.E.P.… | ||
| scan0151 | Graph comparing Brake Mean Effective Pressure (B.M.E.P.) against gas velocity past the valves for Hispano and E.A.C./R.R.C.H. carburettor configurations. | ||
| View original record | B.M.E.P. AGAINST CONVENTIONAL GAS VELOCITY PAST VALVES B.M.E.P. STARTS TO FALL AT APPROX 160 FT/SEC GAS VEL. FOR E.A.C. & 183 " " " " " HISPANO. B.M.E.P. lbs/□" 120 110 100 90 80 70 GAS VELOCITY PAST… | ||
| scan0152 | Graph comparing the specific output in BHP/Litre versus RPM for E.A.C. and Hispano engines. | ||
| View original record | SPECIFIC OUTPUT OF E.A.C. & HISPANO. HP/LITRE B.H.P./LITRE. R.P.M. 20 15 10 5 0 500 1000 1500 2000 2500 HISPANO E.A.C. 2 CARB. R.R.C.H. STD. E.A.C. WITH KNAVE CARB. | ||
| scan0153 | Graph of ignition advance versus engine RPM for E.A.C. and Hispano engines, illustrating the effect of dual ignition. | ||
| View original record | IGNITION ADV. REQUIRED TO OBTAIN MAX. POWER ON E.A.C. & HISPANO. SHOWING EFFECT OF THE SYNCHRONISED DUAL IGNITION ON HISPANO. E.A.C. & HISPANO GIVES AUDIBLE DETONATION TO APPROX. 1000 R.P.M. HISPANO… | ||
| scan0154 | Graph showing performance curves for a Hispano engine with its specifications. | ||
| View original record | CURVES FOR. HISPANO ENGINE. BORE X STROKE = 100 X 140 m/m. CAPACITY 6.59 LITRES. COMPN RATIO 4.67. Left Y-Axis: COOLING WATER FLOW GALL / MIN. 5 10 15 20 Right Y-Axis: INDUCTION PIPE DEPN. INS. OF… | ||
| scan0155 | Graph comparing inlet valve displacement against piston displacement for 'Hispano' and 'E.A.C.' models. | ||
| View original record | INLET VALVE DISPLACEMENT. ON PISTON DISPLACEMENT BASE. TOP CENTRE .50 .40 .30 .20 .10 0 BOTTOM CENTRE STROKE PISTON DISPLACEMENT FROM IN CENTRE. CURVE LABELS: HISPANO E.A.C. X-AXIS VALUES: 0, 20, 30,… | ||
| scan0156 | Performance graph showing B.HP, B.M.E.P., thermal efficiency, and fuel consumption against R.P.M., with a valve timing diagram. | ||
| View original record | VALVE TIMING. E.C. I.O 5° I.C. 45° E.O 40° B.H.P. B.M.E.P. BRAKE THERMAL EFFCY. B.H.P. PTS/B.H.P./HR. R.P.M. B.M.E.P lbs/□'' THERMAL EFFCY % CONSUMPTION PTS/HP/HR | ||
| scan0157 | Performance curves (HP & M.E.P.) comparing Hispano and E.A.C. engines. | ||
| View original record | H.P. & M.E.P. CURVES FOR HISPANO & E.A.C. Top Graph (B.M.E.P.): Y-Axis Label: B.M.E.P. lbs/sq" Y-Axis Values: 80, 90, 100, 110, 120 Curve Labels: - HISPANO - E.A.C. WITH 2. R.R.C.H. CARBURETTERS -… | ||
| scan0158 | Graph comparing E.A.C. and Hispano inlet valve lift diagrams against crankshaft degrees. | ||
| View original record | E.A.C & HISPANO VALVE LIFT DIAGMS. COMPARED. INLET VALVES. .50 .40 .30 .20 .10 CRANKSHAFT DEGREES. 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 E.A.C. HISPANO… | ||
| scan0159 | Valve timing diagrams and displacement curves for a Hispano-Suiza engine. | ||
| View original record | HISPANO VALVE DIAGMS. EFFECTIVE TIMING DIAGM. IN.O EX.C. 5° IN.C. 45° Ex.O. 45° HISPANO SUIZA INLET VALVE DISPLACEMENT CURVE WITH 2 m.m. CLCE MAX LIFT = .388. EXHAUST VALVE DISPLACEMENT CURVE WITH 2… | ||
| scan0160 | Performance graphs and valve timing diagram for a Hispano engine. | ||
| View original record | HISPANO ENGINE Left Graph: MECH. EFF % HORSE POWER MECH EFF I.H.P. B.H.P. ROTATE ENGINE ENGINE R.P.M. Valve Timing Diagram: T.D.C E.C I.O 15° 225° I.C 45° B.D.C E.O 40° 220° Right Graph: EXPLOSION… | ||
| scan0161 | Modifications and fitting for a servo shaft and worm wheel. | ||
| View original record | x9770 To DA. from R. c. to E. RG. HS. BY. S E C R E T. RL/M19.3.24. E. A. C. X.9940 X.9770 RE. B.sch.1767 - Your date 11.3.24. SERVO SHAFT. I prefer the lower scheme as a cleaner simpler and less… | ||
| scan0162 | Secret memo discussing the importance of secrecy for a new chassis and special speed model, including key management and the potential financial impact of rumors. | ||
| View original record | SECRET. To Hs. from CJ. Referring to my Memo. as to secrecy in connection with chassis having EAC. engines, CJ15/E21/1/24, I am afraid that I did not make it clear that there should be only one key in… | ||
| scan0163 | Secret memo regarding security protocols for garaging cars and preventing inspection of engine contents. | ||
| View original record | SECRET. To Hs. from CJ car during the 24 hours concerned. Secondly, the occasions on which the bonnet was opened and what were the surroundings of the car whereby it was impossible for the contents of… | ||
| scan0164 | Secret internal memo discussing design considerations for a vehicle's frame, brakes, axle, and suspension. | ||
| View original record | X.9770 To DA. from R. c. to CJ. Wor. c. to HB. RG. c. to BY. PN. S E C R E T. R2/M22.3.24. E.A.C. 5. X.9770 FRAME. Is this not exactly like EAC.1. If so it could be on the floor. (This EAC.1. frame… | ||
| scan0165 | Secret meeting memo discussing engine components including cams, carburetter, exhaust and detonations. | ||
| View original record | X9770 To E. & DA. FROM R. c. to CJ. BJ. RG. WOR. BY. HS. PN. S E C R E T. R4/M22.3.24. E. A. C. ENGINE - X.9770 MEETING AT LE CANADEL - (RG. HS. & R.) CAM & VALVE TIMING. X.9090. It was considered and… | ||
| scan0166 | Secrecy procedures for experimental EAC engines, focusing on bonnet key management. | ||
| View original record | X9770 CJ. from HS. Hsl/LG27.3.24. RE. SECRECY IN CONNECTION WITH EAC. ENGINES. Answering your CJ13/E20.3.24. We will arrange in future that there is only one key to fit the bonnet of any EAC. car… | ||
| scan0167 | Car fitted with an EAC engine and a super 40/50 HP model seen in France. | ||
| View original record | contd:- -2- a car fitted with an EAC. engine into districts where there are numbers of enthusiastic R-R owners. I heard in Paris (on my way back from Le Canadel) that Mr. Northey had been on the… | ||
| scan0168 | Strict conditions and secrecy surrounding the key for a car's bonnet. | ||
| View original record | CJ15/E21.1.24. I have received the key of the bonnet of Car No...... I have read CJ's memorandum of the 21st. Jan. and realise that under no circumstances whatever must I open the bonnet in the face… | ||
| scan0169 | Project plan for vehicle EAC.V, suggesting the cancellation of EAC.1 and the reuse of its parts. | ||
| View original record | To CJ. from R. X.9770 R4/M29.3.24. c. to Wor. RG. DA. BJ. E. PN. BY. HS. S E C R E T. E.A.C. 1 & V. I am very anxious to get EAC.V. on the road as soon as we have finished with EAC.11., so that we… | ||
| scan0170 | Important modifications to be urged forward for the 40/50 and 20HP chassis. | ||
| View original record | L9770 1 Wor. c. Hs. BY2-P3.4.24. L9770 X4219 IMPORTANT MODIFICATIONS WHICH R. CONSIDERS SHOULD BE URGED FORWARD FOR 40/50 AND 20HP CHASSIS. Dealing with R5/M21.11.23, all four items, namely:- 1. The… | ||
| scan0171 | The standardisation of a Vacuum Feed. | ||
| View original record | BY2-P3.4.24. contd. - 2 - In regard to the Vacuum Feed, I am taking this matter up with Hs, in regard to the issuing of a standardisation sheet to make it possible for same to be applied to EAC.111.… | ||
| scan0172 | Engine ignition advance, combustion chamber shape, and second ignition plug positioning. | ||
| View original record | To E. HS. from R. c. to CJ. RG. DA. BY. S E C R E T. X9770 E. A. C. ENGINE. X.9780. X.9770. The question is why do we need more advance? Probably the shape of combustion chamber, but one might imagine… | ||
| scan0173 | Secret memorandum about the design of front wheel brakes for short type EAC.111 chassis. | ||
| View original record | To DA. from Hs. c. to BY. RG. c. to Wor. X9770 S E C R E T. E. A. C. 111. Hs7/LG11.4.24. X.9770 X.9940 So far, all the schemes got out for EAC.111 chassis only apply to the long type chassis. It is… | ||
| scan0174 | List of experiments and questions requiring a report, relating to engine modifications and other vehicle components. | ||
| View original record | X9770 GWH + Rm 17.4.24. The following is a list of experiments which we should like your report upon as soon as possible. EAC.111. ENGINE. 1. Is the modified Exhaust as quiet as standard 40/50 - if… | ||
| scan0175 | List of questions and required reports regarding springs, steering, brakes, and oil leaks on a vehicle. | ||
| View original record | contd:- -2- 14. We wish to know whether the Gaiters fitted to the new type springs are satisfactory, especially at the rear end where they are fitted to the new type bracket. 15. We want to know… | ||
| scan0176 | Delaying the issue of details and tools for 200 sets of a Servo Mechanism. | ||
| View original record | X9770 Ws. c. Hs. c. Rg. c. Sfy. BY12/H. 28. 4. 24. E.A.C.III. LATEST SCHEME. ----------------------- After consultation with Hs, and in view of the discussion which has taken place about the Servo… | ||
| scan0177 | Shortcomings of Hispano brakes, a proposed new ratchet drive design, and engine issues. | ||
| View original record | X9770 To E. and DA. from R. c. to CJ. Wor. RG. BY. Hs. S E C R E T. E. A. C. RL/M28.4.24. X.9770 X.4214 X.9550 X.1013. I think you did well in finding the short-comings of our and Hispano brakes at… | ||
| scan0178 | Modifications to a car's dashboard, bonnet, and radiator to comply with instructions for experimental road use. | ||
| View original record | X9770 Hs. RHC. Mr. Booth. Mr. Shelton. Mr. D'Asth. BY8/H. 1. 5. 24. E.A.C.I. In finishing off the above car, we propose not to carry on with the original wide dashboard, and special bonnet, and… | ||
| scan0179 | Development and suggested improvements for the EAC Engine X.9770. | ||
| View original record | X9770 SECRET To RG. E. DA..HS) FROM R. c. to CJ. Wor. BY. RE. EAC. ENGINE. X.9770 To produce EAC.2. it is necessary to get this engine perfected. I have seen the reports of the conference but had not… | ||
| scan0180 | Servo troubles, unequal braking, and proposed design improvements for the braking system. | ||
| View original record | X9770 S E C R E T To RG. E. ) from R. DA. Hs. ) c. to CJ. Wor. By. R3/M1.5.24. X9770 X9940 X9910 RE CONFERENCE AT DERBY ON EAC:2 & 3. Mr. Day has told us that servo troubles might be due to the… | ||
| scan0181 | Comparison of two direct braking schemes, one for the rear axle only and one for four wheels. | ||
| View original record | R3/M1.5.24. -2- Contd. (1) Direct foot to rear axle only - present 40/50 leverage. (2) Direct foot to 4 wheels - half present 40/50 leverage. } This gives equal clearances. to see which scheme gives… | ||
| scan0182 | Secret internal memo regarding modifications to a car's braking system and levers. | ||
| View original record | 49770 To Hs. from Da. S E C R E T. DA1/M2.5.24. RE. EAC.3. CARS. X.9940 E.9770 You will have heard from Mr. Royce that he is interested in RRM. DES.60. more than any other. We sent you a lever with… | ||
| scan0183 | Record of experimental electrical parts fitted to chassis 46-PK. | ||
| View original record | x9770 3.5.24. RECORD OF ELECTRICAL EXPERIMENTAL PARTS FITTED TO CHASSIS 46-PK. 3rd. May. Short Redmanol encased coil. E.A.C. dynamo C with cast iron poles. Fair ampere maximum but poor cutting in. | ||
| scan0184 | Record of electrical experimental parts fitted to chassis 93-NK. | ||
| View original record | 3.5.24. RECORD OF ELECTRICAL EXPERIMENTAL PARTS FITTED TO CHASSIS 93-NK. 3rd May. Magneto - Scintilla AM.6A No.34937 (anti-clockwise rotation). EAC. dynamo E with cast iron poles. Fair ampere maximum… | ||
| scan0185 | Strict security protocol for the handling and custody of a special car's bonnet key. | ||
| View original record | 49770 CJS/E21.1.24. I have received the key of the bonnet of Car No..... I have read CJ's memorandum of the 21st. Jan. and realise that under no circumstances whatever must I open the bonnet in the… | ||
| scan0186 | Test report on a car with an adopted braking scheme, covering pedal pressure, servo, safety, and steering. | ||
| View original record | To HS. from R. c. to CJ. BJ. c. to RG. DA. c. to E. PN. EP. 49770 SECRET. R4/M5.6.24. RE. CAR WITH ADOPTED SCHEME OF BRAKING. X.9770 X.9940/10 PEDAL PRESSURE. The car and brakes appear very… | ||
| scan0187 | Test report evaluating the performance of a car's clutch, brakes (jaggers), and servo system. | ||
| View original record | contd:- -2- long run through much water. CLUTCH. The clutch on this car (standard 40/50) was far better than on my car, because the clutch brake did not stop it so quickly. JAGGERS. I was pleased to… | ||
| scan0188 | Post Office Telegram from Basil Johnson regarding a car trial for Mr. Hives. | ||
| View original record | POST OFFICE TELEGRAPHS. (25618) EM7777 40,000M. 2/23 R.&Co.Ltd. E.1305. Handwritten Reference: 49770 Stamp: CONFIRMATION No. of Telegram: 23 Sent: 11-36 M. To: 1320. By: a e Office Stamp: DERBY 28 AU… | ||
| scan0189 | Secret memo outlining the conditions for road testing the E.A.C.1 armoured car. | ||
| View original record | To Hs. from BJ. BJ5/H18.6.24. 29770 SECRET. E. A. C. With reference to our conversation concerning testing E.A.C.1 on the road, we agree, subject to :- (1) Your sending us a sketch of the suggested… | ||
| scan0190 | Letter received from an agent in Italy regarding news being spread. | ||
| View original record | To BP. from BJ. Copies to Wor. Hs. (crossed out) Handwritten notes: HS X9770 Nicholls of Italy. I attach a copy of a letter received from our agent in Italy, from which it would appear that Lauro has… | ||
| scan0191 | Letter from Nicholls Brothers about a customer's request to substitute chassis 16-LM for the new 40/50 model. | ||
| View original record | COPY OF LETTER FROM NICHOLLS BROTHERS, Via a Solari No. 9, Milano. Chassis 16-LM. Mr. Ubertalli writes that he has had a visit from an Englishman who says that he has tried the new 40/50 with overhead… | ||
| scan0192 | Requesting to trace the origin of rumours about test cars in France and to restrict testing to country districts. | ||
| View original record | Y9770 To Mr. from BJ. Copy to Hs. BJ2/H1.7.24. Re Memo. from Paris, re Super-Rolls: Th/JD26/Do178/28.6.24. Will you please try to trace the originof the rumour mentioned in the enclosed copy of… | ||
| scan0193 | Translated letter from a client wishing to place five orders for a new car model being tested. | ||
| View original record | P/S. Th/JD26/Do178/ June 28 1924. Re SUPER ROLLS-ROYCE. We beg to give you hereunder translation of a letter, under date of June 25th, which we have today received from Mr. T. Buxareo. "While at… | ||
| scan0194 | Secret internal memo concerning a 'Super Rolls-Royce' and other test vehicles. | ||
| View original record | X9770 To BJ. from Hs. c. to WOR. S E C R E T. Hs3/LG2.7.24. With reference to memo. BJ2/Hl.7.24. enclosing copy of memo. from Paris - Re. "Super Rolls-Royce". As Mr. T. Buxareo heard of the new car at… | ||
| scan0195 | Letter clarifying the source of information obtained by Mr. Ubertalli was from an Englishman, not Lauro. | ||
| View original record | X9770 c for. c. Hs. EP6/H2.7.24 Nicholls, Italy. With reference to your BJ3/H11.7.24. we respectfully suggest that there is nothing in Messrs. Nicholls letter to lead us to think that the information… | ||
| scan0196 | Secret memo discussing the risk of a former employee, Lauro, sharing confidential information with a competitor, Isotta Fraschini. | ||
| View original record | SECRET. X9770 BJ16/H4.7.24. To MR. from BJ. Copies to Wor. Hs. Re Nicholls of Italy. EP6/H2.7.23. It is just possible that Lauro is not responsible, but the following points point rather clearly to… | ||
| scan0197 | Letter regarding an insurance ticket for car 35 PK and legal proceedings for an accident involving car 98 NK. | ||
| View original record | X9770 Chateauroux. Indre. France. July 7th, 1924. To "HS" From "Rm". copy to P/L X9941/X9770 X676/X4199 We thank you for the further Insurance Ticket for 35 PK, which is now on the car. With regard to… | ||
| scan0198 | Suggesting the engine from chassis 98-NK be allocated to the sales department for demonstration work due to its pleasant performance. | ||
| View original record | X9770 PN12/DN/23.7.24. TO Hs FROM PN Re Chassis 98-NK BJ and I had the impression that the engine of this car gave a pleasant performance, especially under conditions of acceleration, which led us to… | ||
| scan0199 | Stringent security protocols and logging requirements for the key to a car's bonnet. | ||
| View original record | X9770 July. 1924 CJ15/E21.1.24. I have received the key of the bonnet of Car No..... I have read CJ's memorandum of the 21st. Jan. and realise that under no circumstances whatever must I open the… | ||
| scan0200 | Preparation of a car with four-wheel brakes and an EAC.2 chassis for sales approval. | ||
| View original record | X9770 S E C R E T. & To Hs. from R. c. to CJ. BJ. E.A.C. 2 or 3. R2/M14. 8. 24. X.9770 X.8770 X. 8250. I think it very advisable for you to let WW. have a car fitted with four wheel brakes, and… | ||
| scan0201 | Test drive report on an E.A.C. Open Touring Car, detailing its performance and issues. | ||
| View original record | X9770 PN3/DN/22.8.24. TO Hs FROM PN E.A.C. Open Touring Car. I found this car very pleasant to handle from all important points of view. The acceleration certainly spoils one for a standard car, and… | ||
| scan0202 | Evaluating the performance of the EAC engine, discussing issues and proposed improvements. | ||
| View original record | X9770 To RG. from R. Hs. c. CJ. BJ. Da. E. Bv. EP. S E C R E T. R4/M29.8.24. EAC. ENGINE. X.9770. X.9771. GENERAL. This seems very nearly satisfactory, being power-ful at all speeds, smooth at all… | ||
| scan0203 | Repair and return of a 48-PK car and the unavailability of new type steering wheels. | ||
| View original record | W/S. CWB. from Hs. X9770 Hs4/LG3.9.24. In answer to CWB8/DB1.9.24. We expect to return 48-PK car (Cabriolet) to you in 10 to 14 days time. The repairs to the coach-work cannot be done under that time.… | ||
| scan0204 | Required repairs and additions for a 48-PK Cabriolet. | ||
| View original record | X9770 S/W. to Hives. CWB/DB.4-9-1924. re 48-PK (Cabriolet) Your HS4/LG3.9.24 received. I am sorry you have not available one of the large diameter steering wheels. On the 3rd inst. I had a further… | ||
| scan0205 | Defending the department against claims of wasting time and money by detailing tests on cars with stronger springs. | ||
| View original record | R.R. 493A (40 H) (SL 42 12-7-28). J.H., D. EXPERIMENTAL REPORT. To CJ. from Hs. c. to R. Wor. BY. X9770 Expl. No. 9410 9770 9680 X8770 S E C R E T. EXPERIMENTAL CARS. REF: Hs2/LG5.9.24. We cannot… | ||
| scan0206 | The selection of car springs, balancing performance against comfort. | ||
| View original record | -2- EXPERIMENTAL REPORT. Expl. No. REF: Hs2/LG5.9.24. had the Experimental Dept. not had it, it would, we presume, have gone to a customer. The 10% stronger springs were, in our opinion, the best… | ||
| scan0207 | The repair and subsequent sale of the experimental 35-PK car after it was crashed in France. | ||
| View original record | X9770 To C. from Hs. c. to Hm. c. to D/L. Hs4/LGS.9.24. 35-PK Car. With reference to the above car which is an experimental car and was smashed up in France. We have no further use for this car and… | ||
| scan0208 | Delay for a 48-PK Cabriolet due to alterations to the front springs. | ||
| View original record | W/S. To CWB. from Hs. X9720 Hs9/LG18.9.24. 48-PK - CABRIOLET. We shall be unable to carry out our promise for this car because of the alterations to the front springs. We anticipate it will be at… | ||
| scan0209 | Superior qualities of a specific car chassis and a proposal to reserve it for demonstration and testing. | ||
| View original record | To Hs. from BJ. c. to PN. X9770 BJ5/H18.9.24. RE: 98-NK. X.488 X 8950 [crossed out] X.9770. X.9680 [crossed out] PN. has shown me Hs2/LG3.9.24. as our suggestion that this car should be reserved for… | ||
| scan0210 | Note confirming that a car will be for sale after being repaired and that the Repair Department will be contacted. | ||
| View original record | S/W Hs. X9770 C12/C19.9.24. Re 35-PK. Hs4/LG8.9.24. ------ We note this car will be for sale when repaired and we will accordingly communicate with the Repair Dept. in respect of it. C. | ||
| scan0211 | Delivery note for one 50/50 old Limousine, registration UF. 853. | ||
| View original record | RR 354 S (6 BKS,) (SH 465-25-1-23) MP 264511 DELIVERY NOTE X9770 S 853 Date Sept 25 1924 C/F 1551. Delivered to Rolls-Royce Ltd Derby By ROLLS-ROYCE LTD. 14-15 Conduit Street, LONDON, W.1. Tel.… | ||
| scan0212 | Of goods forwarded for a 40/50 R.R. chassis fitted with a Hooper limousine body and accessories. | ||
| View original record | RR 426 S (24 BKS.) (SL 48 12-7-23) MP 275306 ADVICE ROLLS-ROYCE LTD. 14 & 15 Conduit Street, LONDON, W. 1. S 1551 MEMO. OF GOODS FORWARDED Date Sept 25. 24 To Rolls Royce Derby We have this day… | ||
| scan0213 | Engine inspection report for Chassis 9 PK, detailing the condition of various components. | ||
| View original record | X9770 CHASSIS - 9 PK. ENGINE. Crankcase & Bearings. General condition of crankcase very good, all studs, bolts etc, were secure. General condition of main bearings very good, with the exception of… | ||
| scan0214 | Inspection report detailing the condition of engine components with a table of piston measurements. | ||
| View original record | (2) Pistons. General condition very fair, no signs of seizure, bedding on the skirts good, all rings easy in the grooves, all drain holes choked with carbon, size of pistons as follows :- | | 1 | 2 |… | ||
| scan0215 | Inspection report detailing wear, damage, and condition of various vehicle components. | ||
| View original record | (3) Wheelcase. Fan pulley had been rubbing drive possibly due to slipper being loose. Carburetter. Screw missing from float chamber. Piston rather easy fitting in cylinder and a poor bedding surface,… | ||
| scan0216 | Inspection report detailing wear measurements for a distributor, cylinders, valve guides, and valves. | ||
| View original record | (4) Distributor. Points unevenly worn and badly burred. Tower very dry on spigot causing advance and retard action to be very heavy. Cylinders. Condition very fair, sizes of bores as follows :- | | 1… | ||
| scan0217 | Inspection report detailing the condition and measurements of a water pump, engine coupling, pipes, and rear springs with fittings. | ||
| View original record | (5) Some valves have not been seating properly which will no doubt account for the burning. Water Pump. Casings and bearings very good, wear on Rotor .003 to .004 on bearings. Engine Coupling. General… | ||
| scan0218 | Inspection report detailing wear and issues with swivels, sliding plates, and front springs and fittings. | ||
| View original record | (6) Swivels. The difference between top and bottom of inside faces shown is .025, there is an .060 washer in each side, side clearances otherwise O.K. Distance piece missing from sliding plate, long… | ||
| scan0219 | Vehicle condition report detailing issues with the frame, suspension, engine, and various fittings. | ||
| View original record | (7) Front spring alum packings for giving the necessary lean are broken across holes, faces show signs of fidgitting, locating pieces and backing plates O.K. Frames & Fittings. Frame approx; .125 out… | ||
| scan0220 | Condition report with diagrams detailing wear on hand brake, front equalizer, steering column, and universal joint components. | ||
| View original record | (8) Hand Brake Equalizers Condition good. Front Equalizer. Very sluggest in its operation when removed from chassis, due to its dirty condition caused by insufficient protection from mud. The bearing… | ||
| scan0221 | Inspection report detailing wear on bushes for a joint fork, cross pin, and the condition of a spherical component. | ||
| View original record | (9) Wear on bushes for joint fork Actual size. -.978) (.975 drg.size. -.972)A. B (.972-1/2 wear. -.006) (.003 Side clearance when in position.002 - drg size .002 to .004 Wear on bushes for cross pin… | ||
| scan0222 | Inspection report detailing wear and dimensions of front axle pivot pins and bushes. | ||
| View original record | (10). Front Axle & Brakes. Pivot Pins. Both Pins show signs of picking up and are worn slightly eliptical. Near side. Actual size .996 DIAM Wear uneven .002 drg size .998-1/2 Actual size .9995 DIAM… | ||
| scan0223 | Wear measurements of brake drums, shoes, and rear axle components. | ||
| View original record | (11) Brake Drums. These are approx; .004 to .006 under drg dimension of 15.000-3 and ridges have worn approx; .008 to .012 deep. Ferodo Shoes. Max; wear approx; .150 (viz: from .312 to .150). Pull… | ||
| scan0224 | Record of engine maintenance and parts replacement for Chassis 9 PK. | ||
| View original record | CHASSIS-9 PK. ENGINE. Crankcase & Bearings. Main bearings taken up, No 2 and 5 replaced (New bearings) cranksahft re-bedded. Oil Level Indicator to LeC.1762 fitted. Crankshaft. end Connecting Rods… | ||
| scan0225 | List of modifications and parts fitted to various vehicle systems, page 2. | ||
| View original record | (2). Magneto Drive. Magneto Brake Drum trued up,and new Ferodo liners fitted, Alum Washers fitted in coupling in place of Vellumoid. Engine Coupling. New coupling blocks G.9119 with adjusting washers… | ||
| scan0226 | List of modifications and parts fitted to various vehicle systems, including dampers, suspension, steering, and pedals. | ||
| View original record | (3). Torque REaction Dampers. New Ferodo Disc's E.23523 fitted. Frame & Fittings. Frame re-set and made O.K. New rubber buffers for front & rear springs fitted. Rear Springs & Fittings. Rear springs… | ||
| scan0227 | List of modifications and new parts fitted to various vehicle components, including wiring, steering, axles, brakes, and gearbox. | ||
| View original record | (4). Wiring. New wiring throughout. Side Steering Tube. New side steering tube to arrg:drawing F.71406,fitted with springs F.71401. Front Axle. New front axle complete to arrg:drawing G.72403,with… | ||
| scan0228 | The slow running performance of the E.A.C. engine. | ||
| View original record | R.R. 495A (ROH) (D.A. 052 20-3-24) J.H.D. EXPERIMENTAL REPORT. Expl. No. 49770 REF: Hs3/LG26.9.24. To R. from Hs. c. to CJ. BJ. c. to RG. E. c. to DA. BY. c. to Wor. S E C R E T. E.A.C. ENGINE - SLOW… | ||
| scan0229 | Investigation and repair of a 'booming fault' and axle/spring changes for car 59-PK. | ||
| View original record | PN. c. Hs. Y9770 EP20/Hl.10.24. re. 59-PK. With reference to your PN16/D30.9.24, I am afraid I cannot make any definite promise for re-delivery of this car to London or say exactly what else will be… | ||
| scan0230 | Moving car 48-PK for spring approval and listing required coachwork repairs. | ||
| View original record | To PN. from Hs. X9770 Hs3/LG2.10.24. 48-PK CAR. X9410 [crossed out] X9770 We are taking this car to WW. tomorrow to get the springs approved. We shall bring the car from WW. to London tomorrow night… | ||
| scan0231 | The urgent conversion of chassis 17-TM for The Prince of Wales, detailing the fitting of front wheel brakes and other special parts. | ||
| View original record | To Wor. from Hm. " S.. " BY. " Hs. X9770 Hm/WW1Q/W6.10.24. Chassis No. 17-TM - The Prince of Wales. With reference to C2/Cl.10.24 which deals with the question of fitting Front Wheel Brakes to chassis… | ||
| scan0232 | Secret memo regarding a visit to W.W. detailing cars and components to be brought for testing. | ||
| View original record | 49770 To R. from Hs. c. to CJ. BJ. c. to E. DA. c. to BY. Wor. S E C R E T. Hs7/LG17.10.24. VISIT TO W.W. L4219 49770 (crossed out) x1698. We propose arriving at WW. on Wednesday morning next the… | ||
| scan0233 | Performance and issues of an 11-AU Open Touring 40/50 HP after a test drive. | ||
| View original record | PN2/DN18.10.24. TO BJ FROM PN Re 11-AU - Open Touring 40/50 HP fitted with F.W.B's. As arranged, I am sending this car to be with you at 4.30 this afternoon, in order that you may form an opinion as… | ||
| scan0234 | The 11-AU Open Touring 40/50 HP model fitted with F.W.B's. | ||
| View original record | X9770 To BP. from BJ. c. to Hs. BJ-2/D20.10.24. Re: 11-AU - Open Touring 40/50 H.P. fitted with F.W.B's. I attach copy of memo. which I have sent to CJ. to-day, together with a copy of PN's memo. A… | ||
| scan0235 | Noise complaints about a 40/50 HP Open Touring car, registration 11-AU. | ||
| View original record | X9770 To C.J. from B.J. Re: 11-AU - Open Touring 40/50 H.P. fitted with F.W.B's. Handwritten note: Hs Please consider + see us about this on Tuesday I attach a copy of PN2/DN18.10.24. I quite agree… | ||
| scan0236 | Testing of a new exhaust system and an objectionable noise from the exhaust cut-out. | ||
| View original record | -2- BJ-1/D20.10.24. countries, such as Australia, etc., until the cure has been found. FN. and I have tried this new exhaust on closed cars and consider it is passable as it can only be heard to any… | ||
| scan0237 | Test drive feedback on an Open Touring 40/50 HP car, focusing on engine and exhaust noises. | ||
| View original record | To C.J. from B.J. Re: 11-AU - Open Touring 40/50 H.P. fitted with F.W.B's. I attach a copy of PHR/DMS.18.10.24. I quite agree with what is said there. PH. sent the car for me to try at Gerrard's Cross… | ||
| scan0238 | Trial and noise issues of a new exhaust system and its cut-out feature on different car models. | ||
| View original record | -2- BJ-1/D20.10.24. countries, such as Australia, etc., until the cure has been found. PN. and I have tried this new exhaust on closed cars and consider it is passable as it can only be heard to any… | ||
| scan0239 | Performance, engine noise and exhaust issues of the 11-AU Open Touring car after a road test. | ||
| View original record | To BJ. From PN. Re: 11-AU - Open Touring 40/50 HP. fitted with F.W.B's. As arranged, I am sending this car to be with you at 4.30 this afternoon, in order that you may form an opinion as to the new… | ||
| scan0240 | Why car 48-PK is not considered a fair representative of a standard 40/50 car due to its roughness. | ||
| View original record | SECRET. X9770 To Hs. from CJ. c. to BJ. c. to PN. c. to CWB. REF. 48-PK. CJ14/E3.11.24. Referring to your secret memo. Hs1/LG29.10.24., 48-PK is not considered to be a fair representative of a… | ||
| scan0241 | Confirmation of a telegram concerning the availability of car 48-PK and the return of personnel. | ||
| View original record | X9770 Confirmation of Telegram. ROYCAR DERBY 11.11.24. X9770 / X8770 HIVES BRIGGS NOT DUE BACK WITH 48-PK UNTIL THURSDAY EVENING WRITE BJ WHY YOU REQUIRE CAR AND FOR HOW LONG AND HE WILL ENDEAVOUR… | ||
| scan0242 | Secret internal memo arranging the loan of a 48-PK car for use as a comparison model. | ||
| View original record | W/S. C O P Y. X9770 CWB. from Hs. S E C R E T. Hs4/LG11.11.24. X8770 X2565 X9770 I telephoned to your this afternoon, and as I could not get you I spoke to Bs. and asked him to leave a message as to… | ||
| scan0243 | Secret memo from 'Hs' to 'BJ' requesting the use of the 48-PK car for a weekend. | ||
| View original record | X9770 To BJ. from Hs. S E C R E T. Hs2/LG12.11.24. X8770 X9770 Attached herewith is a copy of our Hs4/LG11.11.24 which we have sent to CWB. with reference to 48-PK car. We should very much like to… | ||
| scan0244 | The long-term testing of front wheel brakes on car 48-PK and arranging a replacement demonstration vehicle. | ||
| View original record | To Hs. from BJ. BJ2/H13.11.24. X9770 FRONT WHEEL BRAKES. With reference to CWB's car, 48-PK, this car is not available on the days you require. We do not know exactly when it will return to London,… | ||
| scan0245 | Test notes on brake issues for car 48-PK, detailing a serious 'jagger' from the servo gear and a tendency to pull. | ||
| View original record | 19770 To Hs. from BJ. BJ2/H14.11.24. Car No. 48-PK. The following notes occur in connection with the test of 48-PK:- Mileage 3776. On one occasion only on applying the brakes a very serious jagger was… | ||
| scan0246 | 'servo jagger' fault on car 48-PK and arranging a demonstration in Derby. | ||
| View original record | To B.J. from Hs. X9770 Hs4/LG17.11.24. 48-PK CAR. X9910 With reference to BJ2/H14.11.24. We are quite aware that the servo jagger can occur and experiments are in hand to find a means of eliminating… | ||
| scan0247 | Specifications for E.A.C. chassis, covering conversion chassis for 'U' and 'V' series, and an improved 'V' chassis. | ||
| View original record | X9770 SECRET To CJ. FROM R. c. to BJ. Wor. c. to BY. HS. R1/M17.11.24. SPECIFICATIONS FOR E.A.C. CHASSIS. X. 8770 X. 9770 (A) CONVERSION CHASSIS. (For 'U' Series and earlier, for 'V' series or part of… | ||
| scan0248 | Continued memorandum detailing specifications for 'W' series chassis. | ||
| View original record | contd :- -2- (7) This would not suit bodies made for 'U' series because of bonnet, dash, and scuttle. (8) This is the quickest way to get model running. (C) 'W' SERIES CHASSIS. (1) Eac.2. exactly -… | ||
| scan0249 | The condition of car 98-NK after testing, detailing necessary overhauls and potential future use. | ||
| View original record | [Handwritten top center] X9770 To B.J. from Hs. Hsl/LG18.11.24. 98-NK CAR. [Handwritten above first paragraph] | ||
| scan0250 | Covering letter for a list of tools and spares received with chassis number 9.PK. | ||
| View original record | X9770 Re Chassis No. 9.PK. Hs. D/JL24/N.1.12.24. We attach a list of tools and spares received with this car, and shall be glad if you will advise us if the list is not correct. DVL. | ||
| scan0251 | List of spares and accessories received with a vehicle, including details on its condition, extras, and defects. | ||
| View original record | R.R. 407A (3 Bks.) (D.A. 937. 19.6.24.) Bm. 2/23/25. ROLLS-ROYCE LIMITED, DERBY. 3533 LIST OF SPARES AND ACCESSORIES RECEIVED WITH Chassis Nos. 9.PK Customer: School Car Date: 22.12.24 Type of Body:… | ||
| scan0252 | Delivery note for a chassis with a Barker landaulette body, which has a cracked windscreen. | ||
| View original record | RR 354 S (6 BKS,) (SH 468-25-1-23) MP 26451 DELIVERY NOTE X9770 S 912 Date 2nd Oct. 1928 G/F. 1/7/28 Delivered to Rolls Royce Derby By ROLLS-ROYCE LTD. 14-15 Conduit Street, LONDON, W.1. for New Bond… | ||
| scan0253 | Advice note listing a 40/50 chassis with a Barker Cauntanble body and its complete inventory of parts. | ||
| View original record | ADVICE ROLLS-ROYCE LTD. S 1728 14 & 15 Conduit Street, LONDON, W.1. for W. Deans H. MEMO. OF GOODS FORWARDED Date: Dec. 2/24 To: Rolls Royce Only We have this day forwarded to: you QUANTITY: 1… | ||
| scan0254 | Unpleasant noise in car 12-AU (40/50 HP landaulet) and the strategy to investigate and resolve the issue. | ||
| View original record | Handwritten: X9770 Handwritten: W.H. -> To MR [crossed out] . from BJ. Copies to Hs. Wor. P.N. C.W.D. IMS. (for C.S.C. To inform complete car testers). Re Car No. 12-AU. With reference to our run in… | ||
| scan0255 | Complaints and repairs for Chassis No. 17-TM, owned by the Prince of Wales. | ||
| View original record | To R. from Hm. C. to OJ. C. to BJ. C. to Wor. C. to S. C. to Hs. C. to EP. C. to BY. V9770 Hm3/W9.12.24. Chassis No. 17-TM - Prince of Wales. This car has been returned to us with the following… | ||
| scan0256 | Completing brake tests on car 48-PK and preparing it for immediate sale. | ||
| View original record | To Hs. from BJ. Copies to.... O. OX. OWD. SECRET. X9770 BJ15/H9.12.24. Re Car No. 48-PK. We have returned this car to you, as we have now completed the brake tests which we wished to try. Please have… | ||
| scan0257 | Chassis 17-TM (Prince of Wales) detailing issues with a flexible coupling, high-speed steering wobble, and engine performance tests. | ||
| View original record | To CJ. from Hm. C. to C. C. to J. C. to Or. C. to S. C. to Hs.✓ C. to MP. C. to BY. Chassis No. 17-TM - Prince of Wales. We have received the following telegram from R.:- "You may fit Coupling on 17TM… | ||
| scan0258 | Concluding that performance cannot be improved due to the car's heavy weight of 51 cwts. | ||
| View original record | -2- Hm/MS15/W11.12.24 Contd. We do not consider we shall be able to improve on this performance with such a heavy car. It's weight complete without passengers being 51 cwts. We now await further… | ||
| scan0259 | Secret memorandum outlining the expected characteristics and features for the upcoming 'V' series car. | ||
| View original record | To CJ. from Hs. S E C R E T. Hs4/LG12.12.24. 19770 (handwritten, crossed out) 93-NK. 18770 (handwritten, crossed out) This car is what we expect the 'V' series car to be like as regards the following… | ||
| scan0260 | Returning reports on a car and requesting a summarized report on its failings and potential improvements from the Sales Dept. | ||
| View original record | W/S. X9770 To BJ. from Hs. c. to CWB. Hs6/LG15.12.24. 48-PK. We are returning to you herewith reports in connection with the above car. It would be of interest if we were supplied with a summarised… | ||
| scan0261 | Mileage and return of the 48-PK Car. | ||
| View original record | W/S. To Cx/DH. from Hs. c. to CWB. BP. 19770 48-PK Car. Hs4/LG15.12.24. Referring to Cx/DH2/DP/13.12.24. This car has run 8,000 to 9000 miles. The actual mileage by the Expl: Dept: is 2,972 miles.… | ||
| scan0262 | Seized slipper wheel on a 48-PK car, which resolved engine vibrations but left a transmission groan. | ||
| View original record | To CWB. from Hs. X9770 Hs5/LG16.12.24. 48-PK CAR. X9300 We have found that the slipper wheel on this car was practically seized up on the friction surfaces. Since we have made this correct the engine… | ||
| scan0263 | Test report on car number 48 P.K., detailing the performance of the front wheel brakes, engine, and transmission. | ||
| View original record | X9770 ? S/W (Hs). CWB15/LH16.12.24. CAR NO. 48 P.K. ------------- Your Hs6/LG15.12.24 received. In general, this car performed satisfactorily during the test, and had it not been for the marked… | ||
| scan0264 | Vehicle condition report detailing required rectifications before the car is considered suitable for sale. | ||
| View original record | -2- No actual troubles have occurred with the electrical system or with the petrol system, but, a considerable amount of dirt was removed from both the filter immediately before the 'Autovac' and from… | ||
| scan0265 | Condition of several experimental cars being transferred to the Sales department for sale. | ||
| View original record | 29720 To C. from Hs. c. to Hms Hs2/LG18.12.24. CARS IN EXPERIMENTAL DEPT. X180 The following experimental cars have been handed over to the Sales for sale :- 35-PK. This is the car which had the… | ||
| scan0266 | Sale and modification of specific car chassis. | ||
| View original record | contd :- -2- 48-PK. This car has recently been run by CWB. It will be returned to the Sales Dept. by Jan. 1st. 1925. 59-PK. We also sometime ago returned to you this car fitted with Hooper limousine.… | ||
| scan0267 | Report on the unusual growth of a transmission groan in a car. | ||
| View original record | H9770 S/W (Hs) OWB3/LH19.12.24. 48 PK. ----- Your Hs5/LG16.12.24 received. This report is exceedingly interesting and explains the unusual growth of the groan in this car. Presumably the transmission… | ||
| scan0268 | Overhaul and sale of the 9-PK experimental car, recommending the body be scrapped. | ||
| View original record | To Hm. from Hs. X9770 Hs2/LG20.12.24. 9-PK CAR. We have sent over to you 9-PK car. This car has been used for experimental tests in connection with 4-wheel brakes in France. We have now finished with… | ||
| scan0269 | Return of the 48-PK car to the Sales department. | ||
| View original record | X9770 To BP. from Hs. Hs5/LG23.12.24. 48-PK Car. Referring to the attached note ref. Cx/DH2/LR/20.12.24. This car will be returned to Sales on Jan. 1st. 1925. Hs. | ||
| scan0270 | Urgent request for the return of car 12-AU to London as its absence is holding up a potential sale. | ||
| View original record | HSJ S/W. X9770? Cx3/LR/24. 12. 24. Re: 12-AU. This car is very urgently required in London so we would ask you to do all you can to let us have it back at the earliest possible moment, as its absence… | ||
| scan0271 | Internal memorandum regarding cars in the Experimental Department. | ||
| View original record | W/S. To C. from Hs. c. to Hm. X9770 35-PK. RE. CARS IN EXPL: DEPT: Hs1/LG29.12.24. Referring to your C11/C24.12.24. We attach a copy of our note ref. Hs4/LG8.9.24 for your information. .Hs. | ||
| scan0272 | Required modifications to car 48-PK before its sale, including instrument board changes and windscreen wiper removal. | ||
| View original record | [Handwritten: X9770] To CWB. from Hs. c.c. to C. c.c. to Cx. Hs10/LG31.12.24. 48-PK CAR. [Handwritten: X9770] We are returning this car to you tomorrow ready for sale. There are one or two… | ||
| scan0273 | Specification sheet for a 40/50 HP car, chassis 48-PK, with a Cabriolet Park Ward body and accessories. | ||
| View original record | X9770 Hs/LG. 1st. Jan. 1925. Messrs. Rolls-Royce Ltd., Lillie hall, London. Herewith - 1 40/50 HP. car - 48-PK - fitted with - Cabriolet Park Ward body, complete with - Lamps Spare wheels. Horns.… | ||
| scan0274 | Delay in car repairs pending permission from an insurance company. | ||
| View original record | S/W Hs. X9770 C14/C9.1.25. Re 35-PK. Hsl/LG29.12.24. Thanks for your memo. enclosed, which has put me on the track of the correspondence. It seems that we gave instructions for this car to be got on… | ||
| scan0275 | Return of car 12-AU to the Sales department. | ||
| View original record | W/S. Cx. from Hs. K9770 } Hs4/LG1.1.25. 12-AU CAR. This car will be returned to Sales by January 6th. Hs. | ||
| scan0276 | Performance and modifications of the 12-AU car after testing. | ||
| View original record | X9770 To CWB. from Hs. Hs2/LG13.1.25. 12-AU CAR. We are returning 12-AU car to London tomorrow. We consider that the car is definitely improved. Riding in the back of the car, it is very good. On the… | ||
| scan0277 | Confirming the delivery of the 12-AU car to Lillie Hall. | ||
| View original record | W/S. To CWB. from Hs. c. to Cx. X9770 12-AU CAR. Hs2/LG14.1.25. 12-AU car will be delivered to Lillie Hall. It should arrive there sometime this afternoon. Hs. | ||
| scan0278 | The return of car 12-AU, noting a cracked windscreen and missing tools from the kit. | ||
| View original record | W/N. To Lillie Hall - from Hs. X9770 Hs1/LG14.1.25. 12-AU CAR. We are returning herewith 12-AU car complete with - lamps, tools, spare wheels etc. The front windscreen on the passengers side is… | ||
| scan0279 | Return of car 12-AU, detailing a cracked windscreen and missing tools. | ||
| View original record | X9770 W/N. To Lillie Hall - from Hs. Hsl/LG14.1.25. 12-AU CAR. We are returning herewith 12-AU car complete with - lamps, tools, spare wheels etc. The front windscreen on the passengers side is… | ||
| scan0280 | Test report on Chassis No. 12-AU detailing vibrations, engine booms, and its proposed use as a demonstration car. | ||
| View original record | S/W. Hs. from C.W.B. 19770 CWB1/EP/16.1.25. Re:- Chassis No. 12-AU. Your Hs2/LG.13.1.25 received. I have tested this car on its return and agree with your memorandum above. I found a very distinct… | ||
| scan0281 | Removing the Lucas Head Lamps and clock from car No. 48-PK at the purchaser's request and offering the used parts for another experimental car. | ||
| View original record | S/W. (Hs). X9770 C/Hn13/TH17.1.25. re: Experimental Cars. We have had to remove the Lucas Head Lamps and the clock from Car No. 48-PK. as the purchaser, Mr.Matthey, is supplying a pair of special… | ||
| scan0282 | Request for the return of headlamps and a clock from car 48-PK for use on experimental cars. | ||
| View original record | W/s. C/Hn. from Hs. X9770 48-PK CAR. Hs1/LG19.1.25. With reference to your note C/Hn3/MH17.1.25. If you return the head lamps and clock off 48-PK car, we can make use of them on experimental cars. Hs. | ||
| scan0283 | The first test bench and road run dates for the E.A.C. engine. | ||
| View original record | x8770 To BJ. from Hs. S E C R E T. Hs1/LG9.4.25. E. A. C. x8770 The first EAC. engine was run on the test bench on 21.9.23. This same engine was fixed temporarily into a 40/50 HP. chassis and was run… | ||
| scan0284 | Permanently recording delivery dates and discussing potential new chassis modifications. | ||
| View original record | To Wor. from CJ. X9770 X9770 X9940 CJ11/E20.4.25. Referring to the attached, as the Board leave the Administration to settle the question of dates for deliveries, I do not propose to bring this… | ||
| scan0285 | Secret internal memo from CJ to BJ discussing chassis development, timelines, and issues with the V, W, 20HP and 40/50 series. | ||
| View original record | SECRET. BJ. from CJ. It is hoped that we shall not have any big changes in chassis for some considerable time to come, after the V. series 40/50 and the new series of the 20 HP. with 4-speed gearbox… | ||
| scan0286 | Production delays, delivery schedules, and inter-departmental communication regarding engine and chassis development. | ||
| View original record | -2- over the fabric coupling. More than 15 months will have elapsed between the first trial of the EAC. engine by PN. in the south of France and the delivery of the first EAC. chassis to London. (3)… | ||
| scan0287 | Letter requesting photographs of a Dummy 40/50 HP car with a Barker body for the forthcoming Olympia Show. | ||
| View original record | X9770 C/Hn21/H.7.5.25. S/W. (hs). Some little time ago we sent you for the purpose of storage, a Dummy 40/50 H.P. chassis mounted with a Sporting Type Open Body by Barker's. The Coachbuilding… | ||
| scan0288 | Photographs of a dummy car from various angles for an exhibition at Olympia. | ||
| View original record | 19770 To BY/NHW. from Hs/TMW. Hs/TMWL/LG8.5.25. Below is an extract of a memo. from Sales ref. C/Hn21/MH7.5.25. "Before taking a definite decision, however, the C.S.C. would like to see some… | ||
| scan0289 | Photographs of a 40/50 HP vehicle with a Barker open body. | ||
| View original record | Y9770 W/S. C/Hn. from Hs. Hs9/LG12.5.25. 40/50 HP. WITH BARKER OPEN BODY. Referring to C/Hn21/MH7.5.25. We attach photographs as requested in connection with the above. Hs. | ||
| scan0290 | Letter to coachbuilder Barker & Co. detailing issues and suggested improvements for a 9-PK Double Enclosed Limousine. | ||
| View original record | COPY TO HS. ✓ X9770 "CAMACHA" WEST WITTERING. CHICHESTER. 5th. June 1925. Messrs Barker & Co. (Coachbuilders) Ltd. Olaf Street. Latimer Road. LONDON. W. Dear Sirs, (FOR ATTENTION OF MAJOR DINGWALL.)… | ||
| scan0291 | Car 9-PK, warning against its use as a demonstrator and requesting its return for body removal. | ||
| View original record | To DA/EV. from Hs. x9770 Hs2/LG8.6.25. 9-PK CAR. x9770 x9840 We should like to know when we are likely to receive 9-PK car so that we can remove the body, wings etc. We are anxious that the car shall… | ||
| scan0292 | The 9-PK mock-up chassis, its subframe, and issues with its original gearbox. | ||
| View original record | R.R. 493A (50H) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. Expl. No. 49770 REF. Hsl/LGS.6.25. To AJS. from Hs. c. to BY. 9-PK - 'W' SERIES, WITH SUBFRAME. 49770 X8310 9-PK car was rushed together… | ||
| scan0293 | Specification sheet for a sub-frame enclosed limousine on a 9PK chassis, detailing weights and components. | ||
| View original record | to E.H.S. from EV. X9770 EV1.8.6.25. RE SUB-FRAME ENCLOSED LIMOUSINE CHASSIS 9PK. CHASSIS. Silver Ghost with four-wheel brakes. Long chassis, "B" type fitted with dash 2¾ wider & 1.0 in. higher and… | ||
| scan0294 | Car's first test run, detailing performance and issues with rattles, noise, weight, and suspension. | ||
| View original record | REPORT OF CAR'S FIRST RUN. The car was originally fitted with the semi-flexible attachment between the scuttle and the dash but after a very short run bonnet rattles developed and the two attachment… | ||
| scan0295 | Testing of various body subframes on 40/50 and 20 HP chassis. | ||
| View original record | 19770 To Hs. from DA/EV. DA/EV1/M10.6.25. 3 c. to BY. C. RE. BODY SUBFRAMES - X.8380 X.8840 40/50 and 20 HP. X.5380 X.9770 X.4260 Thank you for your Hs2/LGS.6.25., re car 9-FK. This car is now at the… | ||
| scan0296 | Progress on two EAC chassis with subframes and listing eight improvements over the standard 'V' series cars. | ||
| View original record | R.R. 493A (50H) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. Expl. No. X9770 REF: Hs8/LG10.6.25. To R. from Hs. c. to CJ. BJ. c. to RG. E. c. to DA. BY. c. to Wor. S E C R E T. EAC. CHASSIS WITH… | ||
| scan0297 | List of vehicle modifications and details concerning chassis testing for experimental cars 7-EX and 8-EX. | ||
| View original record | -2- Hs8/LG10.6.25. 9. Louvered bonnets. 10. Modified clutch. 11. Modified controls for radiator shutters and starter carburetter. 12. Aluminium induction pipe, induction bend and carburetter. 13.… | ||
| scan0298 | Letter regarding the unsuitability of two sports car bodies and a proposal to fit a different body to a dummy chassis. | ||
| View original record | X9770 S/W (Hs) O/Hn17/1H12.6.25. re: Dummy 40/50 H.P. Sports Car. With reference to our telephone conversation of this afternoon, we now find that unfortunately neither of the two Sports Bodies still… | ||
| scan0299 | Request to return a car chassis for car 9-PK to Hoopers, Kings Rd, Chelsea, after coachbuilder modifications are complete. | ||
| View original record | (9770 TO HS. FROM DA/EV. Copy to Mr Ide. [text has been struck through] DA/EV1/M12.6.25. re. CAR 9-PK. We believe now that the modifications which were to be carried out by the coachbuilders are… | ||
| scan0300 | Arrangements for the Railway Co. to collect a dummy 40/50 chassis and despatch it to Messrs. Barkers. | ||
| View original record | X9770 To BP. from Hs. HsS/LG15.6.25. RE. DUMMY 40/50 CAR. X9770 X9840 Sales wish us to return the dummy 40/50 chassis fitted with a sports body, which we received from them sometime ago. as If this… | ||
| scan0301 | The return of a dummy car with a sports body to coachbuilder Messrs. Barkers. | ||
| View original record | W/S. To C/Hn. from Hs. Handwritten: X9770 Hs2/LG15.6.25. RE. DUMMY SPORTS CAR. Handwritten: X9770 (crossed out) Handwritten: X9840 We are arranging to send the dummy car fitted with a sports body back… | ||
| scan0302 | Telegram regarding a dummy sports car's radiator and dash. | ||
| View original record | (25618) EM7777 40,000M. 2/25 R.&Co.Ltd. E.1498. POST OFFICE TELEGRAPHS. CONFIRMATION +9770 No. of Telegram: 34 Office Stamp: DERBY * 16 JU 25 * Sent: 12.28 M. To: 132 By: HB Words: 20 Received here… | ||
| scan0303 | Telegram received by telephone regarding a Ghent car's dummy W. Series radiators and dash. | ||
| View original record | RR 144A (50BKS.) (SK 871 23-5-23) MP 272631 ROLLS-ROYCE LTD. X9770 TELEGRAM RECEIVED BY TELEPHONE. X8250 Time Received: 12-26 Date: /16-6-25 To: Raypan Derby By: WGA from: London 11-39 Message Body:… | ||
| scan0304 | Differences between a dummy chassis with a sports body and a 'W' series chassis. | ||
| View original record | X9770 To C. from Hs. Hs3/LG16. 6. 25. DUMMY CHASSIS WITH SPORTS BODY. X9770/X9250 We have received the wire as follows :- " HIVES KINDLY SEE DUMMY SPORTS CAR HAS 'W' SERIES RADIATOR AND DASH -… | ||
| scan0305 | The use of a dummy chassis with a sports body for a catalogue photograph and for demonstration purposes. | ||
| View original record | S/W Hs. X9770 C7/C17.6.25. Re Dummy Chassis with Sports Body. Hs3/LG16.6.25. I note what you say concerning this, and this will suit us quite well. We really want to take a coloured photograph of it… | ||
| scan0306 | Telegram regarding the availability of nine R.K. parts and a request to bring a Lucas switch box. | ||
| View original record | To: Hives / Roycar / Derby. Message: Nine R. K. available on Wednesday bring Lucas switch box. From: Evernden. | ||
| scan0307 | From 'Hs' to 'DA/EV' requesting to collect a 9-PK car chassis for tests related to the Silver Ghost. | ||
| View original record | To DA/EV. from Hs. 49770 ? Hs5/LG12.12.25. 9-PK CAR. We are anxious to get hold of 9-PK chassis. We are not so very interested in the body, but we are wanting to confirm one or two tests on a Silver… | ||
| scan0308 | Confirmation of a wire message sent to Hives in Derby regarding the availability of 'Nine PK' and a request to bring a Lucas switchbox. | ||
| View original record | X9720 CONFIRMATION OF WIRE. WEST WITTERING. 14.12.25. HIVES. ROYCAR. DERBY. NINE PK. AVAILABLE ON WEDNESDAY BRING LUCAS SWITCHBOX. EVERNDEN. | ||
| scan0309 | The delivery of car 9-PK, missing parts, and arranging a trial run with Hoopers. | ||
| View original record | R.R. 235A (100 T) (S.H 159 11-8-20) G. 2800 X9770 TO HS. FROM DA/EV. DA/EV1/M14.12.25. Copy to re. 9-PK. X9770 x We were informed on the 'phone this morning that the above car will be ready for… | ||
| scan0310 | Suggesting a new 9-PK Silver Ghost with a Hooper body be used as a transport car for testing its subframe and paintwork. | ||
| View original record | 49720 To C. from Hs. c. to Wor. c. to Mx. c. to My. Hs6/LG21.12.25 EXPERIMENTAL CARS. We have just taken stock delivery of 9-PK car fitted with a double-enclosed limousine Hooper body mounted on a… | ||
| scan0311 | Handover of experimental car 9-PK to the Transport department in place of 10-AU. | ||
| View original record | W/S. To C. from Hs. X9770 Hs2/LG7.1.26. EXPERIMENTAL CARS. We should like to have a reply to our Hs6/LG21.12.25. re. 9-PK car. We are now in a position to hand this car over to the Transport. They… | ||
| scan0312 | Authorising the use of an experimental car, 9-PK, for special purposes, with conditions for its return and sale. | ||
| View original record | S/W 49770 C9/C15.1.26. Re -9PK..Experimental Car. -------------------------- Hs6/LG21.12.25. --------------- BJ. agrees to your using 9-PK at Derby for special purposes, and that you should return to… | ||
| scan0313 | The handover of the 9-PK experimental car for testing by Sales critics and the return of the 10-AU car. | ||
| View original record | W/S. To C. from Hs. c. to Mx. c. to Wor. X9770 9-PK. EXPERIMENTAL CAR. Hsl/LG16.1.26. We shall hand this car over to the Transport Dept. at Derby on Monday. We shall then consider it no longer an… | ||
| scan0314 | The handover of the 9-PK experimental car and a list of its non-standard parts. | ||
| View original record | To Mx. from Hs. c. to Wor. X9770 Hs2/LG16.1.26. 9-PK. EXPERIMENTAL CAR. We attach a copy of note we have received from C. ref. C9/C15.1.26. We shall be hand 9-PK car over to you on Monday. At the same… | ||
| scan0315 | The end of experimental work on car 5-EX, a Silver Ghost, and its transfer to the R.D. | ||
| View original record | To C. from Hs. c.c. to Hm. c.c. to Hy. c. to Wor. +9770 Hsl/L.29.12.26. 5-EX CAR. X180 (struck through) X9770 We do not require this car any further for experimental work. 5-EX is a Silver Ghost… | ||
| scan0316 | The 9-FK experimental car, detailing the use and sale of other vehicles. | ||
| View original record | S/W. C9/C15.1.26, Re. 9-FK EXPERIMENTAL CAR. Hs6/LG21.12.25. BJ. agrees to your using 9-PK at Derby for special purposes, and that you should return to us for sale, car No.10-AU. This is conditional… | ||
| scan0317 | Secret memo reporting the first test bench run of an engine under light loads. | ||
| View original record | X9771 To R. from Hs. c. to CJ. E. A. C. - SECRET. We have had the above engine running for the first time on the Test Bench today. So far it has only been run under light loads. Hs. | ||
| scan0318 | The best horsepower curve obtained from an E.A.C. engine with a 40/50 HP Carburetter. | ||
| View original record | X9771 To R. from Hs. c. to CJ. S E C R E T Hs4/LG24.9.23. E. A. C. The following is the best HP. curve we have so far obtained from the above engine :- E.A.C. POWER OUTPUT - with 40/50 HP. Carb. By… | ||
| scan0319 | On engine performance, including a power curve with a Claudel carburetter and a difficulty encountered with tappet adjustment. | ||
| View original record | To R. from Hs. c. to CJ. SECRET x9771 E. A. C. Hs2/LG29.9.23. 2. x9771 x9060 x9770 Attached herewith is a power curve showing the best power we have so far obtained from the above engine. This power… | ||
| scan0320 | Reliability and efficiency tests for the E.A.C.1 engine. | ||
| View original record | E.R. 493 (40 H) (SL 42 12-7-23). J.H., D. EXPERIMENTAL REPORT. X9771 COPIES TO: R.CJ. BJ. WOR. By. E. Da. EP. PN. OY. Expl. No. X.9771 REF. Hs2/LC1 9.10.23. OBJECT OF TEST. Tests on E.A.C.1 for… | ||
| scan0321 | The performance and condition of an E.A.C. engine after 148 hours of running. | ||
| View original record | R.R. 493 A (40 H) (SL 42 12-7-23). J.H., D. EXPERIMENTAL REPORT. Expl. No. 9771 REF: Hs/1/19.10.23. REPORT ON PERFORMANCE AND CONDITION OF E.A.C. ENGINE AFTER 148 HRS. RUNNING. The engine has now run… | ||
| scan0322 | Observations during a 32-hour endurance run, detailing issues with valves, valve springs, and oil leaks. | ||
| View original record | R.R. 493A (40 H) (SL 42 12-7-23). J.H., D. EXPERIMENTAL REPORT. Expl. No. 9771 REF: HSR/1619.10.23. OBSERVATIONS DURING 32 HRS. ENDURANCE RUN. VALVES. Exhaust valves (45° tulip - Quickstep steel) were… | ||
| scan0323 | Engine component issues and potential improvements following an endurance test. | ||
| View original record | R.R. 493A (40 H) (SL 42 12-7-23). J.H., D. EXPERIMENTAL REPORT. Expl. No. 9771 REF: Hs2/LG19.10.23. teeth. The suction at the point 'P' indicated in sketch amounts to approximately .100" water but… | ||
| scan0324 | Pinion shaft assembly, oil consumption, and an exhaust manifold. | ||
| View original record | R.R. 493A (40 H) (SL 42 12-7-23). J.H., D. EXPERIMENTAL REPORT. Expl. No. 9771 REF: H.2/L.M.19.10-23. aluminium crankcase exceeding that of the pinion shaft. [Diagram of a shaft assembly with labels:… | ||
| scan0325 | Wear on the oil pump, distributor drive, and a cracked main bearing. | ||
| View original record | R.R. 493A (40 H) (SL 42 12-7-23). J.H., D. EXPERIMENTAL REPORT. Expl. No. 9771 REF: HEB/LGL9.10.23. OIL PUMP. The bearings in the brass casing were badly worn and seem to be small for the pressures.… | ||
| scan0326 | The investigation of the E.A. C-1 Engine. | ||
| View original record | R.R. 493 (40 H) (SL 42 12-7-23). J.H., D. X9771 1 EXPERIMENTAL REPORT. COPIES TO: RCJ BJ. WOR. By. E Da. EP. PN. OY. RG Expl. No. X.9771 REF. Hs1/LGb4.11.23. OBJECT OF TEST. Investigation on E.A. C-1… | ||
| scan0327 | Comparing the thermal efficiencies and heat distribution of an E.A.C. engine against a standard 40/50 RR engine. | ||
| View original record | R.R. 493A (40 H) (SL 42 12-7-23). J.H., D. -1- Expl. No. 9771 REF: Hs/LG14.11.23. EXPERIMENTAL REPORT. THERMAL EFFICIENCIES AND HEAT DISTRIBUTION OF E.A.C. ENGINE & STD. 40/50 RR. COMPARED The E.A.C.… | ||
| scan0328 | Heat distribution test data tables expressed as a percentage of heat supplied at various RPMs. | ||
| View original record | PAGE 2. HEAT DISTRIBUTION CONTD:- E.A. C-1. Expressed as % of Heat Supplied. | R.P.M. | Heat supplied. | Th.Eqvt. Wk.done. | Loss to friction. | Loss to Jackets. | Exh. Radiation & pumping (diffce. |… | ||
| scan0329 | Test report on the heat distribution and thermal efficiency of an E.A.C-1 engine. | ||
| View original record | HEAT DISTRIBUTION & THERMAL EFFICIENCY OF E.A.C-1 ENGINE KRAVE CARBURETTOR - S.U. INJECTION SYSTEM. PAGE 1. Fuel - Shell No. 2. Spgr. = .759 Cal. Val (lower) = 19000 B.Th.U's/Lb. Bar: - 757 m/m. Air.… | ||
| scan0330 | Comparison of efficiencies for STD. 40/50 RR. and E.A.C.1 engines with valve timing diagram. | ||
| View original record | PAGE 5. COMPARISON OF EFFICIENCIES OF STD. 40/50 RR. & E.A.C.1 WITH THE AIR STANDARD EFFCY: 40/50 RR. Comp: ratio = 3.99 E.A.C.1 Comp: ratio = 4.6 'Air standard' = 1 - 1/r^(γ-1) | R.P.M. | Indicated… | ||
| scan0331 | Energy diagram for a 40-50 model with a compression ratio of 3.9, showing various efficiencies and losses against engine RPM. | ||
| View original record | ENERGY DIAGM OF THE 40-50 R.R. COMP. RATIO 3.9. SEE SHEET 2. % OF THE INITIAL PETROL ENERGY. R. P. M. LOSSES THRO' - COOLING WATER. EXH. GASES RADIATION CHARGING WK INDICATED TH. EFFCY PISTON POWER… | ||
| scan0332 | Energy diagram and power output graphs for the E.A.C.1 engine, with comparison to the 40-50 R.R. engine. | ||
| View original record | ENERGY DIAGM FOR E.A.C.1. ENGINE. COMP. RATIO 4.6. KNAVE CARB. [ADJ. FOR EACH SPEED] FUEL SHELL HEX. S.G. .759 CAL. VAL. (LOWER) 19000 B.Th.U/lb % OF INITIAL HEAT ENERGY. LOSSES TO:- JACKET WATER… | ||
| scan0333 | Secret memorandum discussing EAC engine weight and power targets, with specific goals for weight reduction and increased horsepower. | ||
| View original record | To E. from R. c. to CJ. c. to HS. c. to BY. 49771 S E C R E T. R4/M15.2.24. RE. EAC. ENGINE WEIGHT AND POWER. X.9930 X.9771 X.9770 This is 122 lbs. heavier than the 40/50. Nearly all is in the… | ||
| scan0334 | The removal, weighing, and testing of a Hispano engine unit, with a comparison to an EAC engine. | ||
| View original record | R.R. 493A (40 H) (SL 42 12-7-23). J.H., D. X9771 EXPERIMENTAL REPORT. Expl. No. 4214 9771 REF: Hsl/LG14. 2. 24. To R. from Hs. c. to CH. RG. c. to PN. E. c. to DA. BY. c. to WOr. S E C R E T. HISPANO.… | ||
| scan0335 | Comparison of road wheel horsepower between a Hispano and an EAC low compression engine. | ||
| View original record | contd:- -2- Comparative road wheel H.P. of Hispano and EAC. REVS. HISPANO. EAC. LOW COMP: 500 18.7 23.5 750 27.9 35.0 1000 36.7 46.2 1250 44.4 56.3 1500 52.9 66.8 1750 59.5 73.3 Piston seized. Hs. | ||
| scan0336 | EAC engine test with two Claudel Carburetters, detailing performance data. | ||
| View original record | R.R. 493A (40 H) (SL 42 12-7-23). J.H., D. X9771 EXPERIMENTAL REPORT. Expl. No. 9771 4214 REF:Hs3/LG20.2.24. To R. from Hs. c. to RG. CJ. c. to DA. E. c. to BY. WOR. S E C R E T. EAC. ENGINE. We have… | ||
| scan0337 | Power loss issues with the EAC engine's 6-cylinder exhaust manifold. | ||
| View original record | R.R. 493A (40 H) (EL 42 12-7-23). J.H., D. x 9771 EXPERIMENTAL REPORT. Expl. No. 9771 9230 REF: Hs1/LGS.5.24. To R. from Hs. c. to CJ. RG. c. to E. DA. c. to BY. WOR. c. to PN. S E C R E T. EAC.… | ||
| scan0338 | Table comparing engine Brake Horse Power (B.HP) across different carburettor and exhaust configurations at various R.P.M. | ||
| View original record | -2- E.A.C. B.H.P. | R.P.M. | KNAVE CARBURETTER. - Standard Manifold free exhaust. | KNAVE CARBURETTER. - Straight exhaust pipes. | 1 R.R.C.H. CARBURETTER. - Straight exhaust pipes. | 2 R.R.C.H.… | ||
| scan0339 | Losses in exhaust pipes. | ||
| View original record | R.R. 493 (40 H) (SL 42 12-7-23). J.H., D. X9770 EXPERIMENTAL REPORT. COPIES TO: (R.C.J) Bd. WOR. By (E). Da EP. PN. OY. (RG) Expl. No. 9770 4580 9230 REF. Hs2/LG28.3.24. OBJECT OF TEST. Losses in… | ||
| scan0340 | Indicator work for EAC. 14 engines, focusing on carburetter and exhaust systems. | ||
| View original record | R.R. 493A (40 H) (SL 42 12-7-23). J.H., D. EXPERIMENTAL REPORT. Expl. No. 9230 REF: Hs/ACL1/LG28.3.24 INDICATOR WORK ON EAC. 14. ENGINES. The attached curves represent the maximum output of this… | ||
| scan0341 | Comparing four different manifold systems and their effect on exhaust pressure and power output. | ||
| View original record | R.R. 493A (40 H) (8L 42 12-7-23). J.H.D. EXPERIMENTAL REPORT. Expl. No. 9230 REF: Hs/ACL/28.3.24. (4) One large diam. manifold - 3.75" dia. at outlet end. Light spring diagrams are given for each of… | ||
| scan0342 | The requirements for early ignition in EAC engines, considering exhaust manifold design and pre-ignition. | ||
| View original record | R.R. 493A (40 H) (SL 42 12-7-23). J.H., D. EXPERIMENTAL REPORT. Expl. No. 9230 REF: Hs/ACL/28.3.24. using a manifold which prevented exhaust interference from other cylinders. Re. Early Ignition… | ||
| scan0343 | Summary of light spring diagrams comparing four different exhaust manifold types for No. 1 cylinder. | ||
| View original record | SUMMARY LIGHT SPG DIAGMS 3E.A.C. II LIGHT SPRING DIAGMS FOR FOUR TYPES OF EXHAUST MANIFOLD. SPRING RATING 6.2 / IN. BAR = 740 M.M. AIR TEMP = 15°C. NO. 1. CYLINDER. SINGLE ST PIPES 2000 RPM STRAIGHT… | ||
| scan0344 | Indicator diagrams and performance curves for an E.A.C. engine, comparing various exhaust manifold configurations. | ||
| View original record | INDICATOR DIAGMS. E.A.C. ENGINE [3 E.A.C. II] 4.6 COMPRESSION RATIO. RR.CH. CARBURETTER USED WITH SEPARATE STRAIGHT EXH. PIPES. TO EACH PORT SUMMARY 110° CAMSHAFT R.P.M. 2000. INDICATOR SPG RATING… | ||
| scan0345 | The performance, losses, and adjustment of a flat disc type servo. | ||
| View original record | R.R. 493 (40 H) (SL 42 12-7-23). J.H., D. 9771 EXPERIMENTAL REPORT. COPIES TO: R.CJ. BJ. WOR. By. E. Da. EP. PN. OY. Expl. No. 9771 REF. Hs2/LG14.4.24. OBJECT OF TEST. Losses in flat disc type servo.… | ||
| scan0346 | Friction and other losses in a slow speed servo mechanism. | ||
| View original record | R.R. 493A (40 H) (SL 42 12-7-23). J.H. D. EXPERIMENTAL REPORT. Expl. No. 9940 9771 REF: HS2/LG14.4.24. FRICTION AND OTHER LOSSES IN WW. SLOW SPEED SERVO. The tests were divided into three main… | ||
| scan0347 | Comparison of plate pressure on the DES.38 servo, detailing torque loss and differences in actuating thread angles. | ||
| View original record | contd:- -2- The difference between this and the actual torque obtained from two plates represents the torque lost to the dog friction resisting any increase in plate pressure. From this we can obtain… | ||
| scan0348 | Test results for frictional losses of a slow-speed servo motor. | ||
| View original record | TESTS ON WW. SLOW SPEED SERVO MOTOR FRICTIONAL LOSSES. Torque is expressed in lbs. ins. TABLE 1: | Equt. pedal press: | Torque input. | One plate (no dogs) | | Two plates. (with dogs) | | Loss of… | ||
| scan0349 | From G. Ratcliffe to Mr. Hives detailing engine performance data with the cut-out closed. | ||
| View original record | 49721 To Mr. Hives from G. Ratcliffe. 14.8.24. EAC.111. 46-PK. CUT-OUT CLOSED. | Eng. R.P.M. | Drum. R.P.M. | Lbs. lift. | H.P. | |-------------|--------------|------------|---------| | 500 | 112 |… | ||
| scan0350 | Secret report detailing the performance of the EAC engine and outlining proposed improvements. | ||
| View original record | X9771 (handwritten) To RG. from R. Hs. c. CJ. BJ. Da. E. Bv. EP. SECRET R4/M29.8.24. EAC. ENGINE. X.9770. X.9771. GENERAL. This seems very nearly satisfactory, being powerful at all speeds, smooth at… | ||
| scan0351 | The slow running performance of the E.A.C. engine. | ||
| View original record | R.R. 498A (20H) (D.A. 652 20-3-24) J.H.D. EXPERIMENTAL REPORT. Expl. No. X9771 REF: Hs3/LG26.9.24. To R. from Hs. c. to CJ. BJ. c. to RG. E. c. to DA. EY. c. to Wor. S E C R E T. X9770/1 X2565 E.A.C.… | ||
| scan0352 | Diagram illustrating the battery and magneto ignition advance curves. | ||
| View original record | X9780 70° 60° 50° BATTERY IGNITION ADVANCE. (FULLY ADVANCED AUTOMATICALLY) 40° 30° BATTERY IGNITION ADVANCE 30° (FULLY RETARDED AUTOMATICALLY) B.D.P. 20° MAGNETO ADVANCE 10° RETARD. 0° ADVANCE. 10°… | ||
| scan0353 | Seeking approval for new ignition timing instructions for the EAC.3 engine. | ||
| View original record | To BY. from EFC. c. Hs. x9780 EFC3/T11.11.24. X.928. IGNITION TIMING x9480 Herewith please receive copy of instructions for the ignition timing of EAC.3 engine. Before issuing this completely for the… | ||
| scan0354 | Instructions for setting the ignition timing on the EAC.3 engine, version 1. | ||
| View original record | 11.11.24. + INSTRUCTIONS FOR THE IGNITION TIMING OF EAC.3 ENGINE. VERSION 1. (1) The engine must be cranked until cylinder No.1 is 15° (2.25" on the flywheel periphery) past top dead centre on its… | ||
| scan0355 | Instructions for timing the magneto using the flywheel and distributor wheel markings. | ||
| View original record | -2- Contd. (3) Now crank the engine back through 13° until cylinder No.1 is 3° (.500 " on the flywheel periphery) before its top centre, and adjust the magneto coupling so that with the ignition lever… | ||
| scan0356 | Instructions for adjusting the platinum point gap on a magneto's contact breaker using a jig. | ||
| View original record | -3- Contd. the distributor wheel. Should it, however, be desired to adjust the platinum point gap without removing the magneto, the contact breaker can be removed from the magneto in position and the… | ||
| scan0357 | The instructions for the ignition timing of the EAC.3 engine. | ||
| View original record | X9780 To EY. from EFC. c. SFT. c. SFT/Mr. Brock. c. Ry/Shn. EFC3/T5.2.25. X.9780. EAC.3 IGNITION TIMING. X9661 Herewith please receive copy of Instructions for the Ignition Timing of the EAC.3 engine.… | ||