Rolls-Royce Archives
| Identifier | Entry | ||
| scan0001 | Proposing a governor-controlled automatic ignition advance mechanism for both magneto and battery systems. | ||
| View original record | X8185 To Hs. from R. c. EFC. c. CJ. R2/M18.10.23. IGNITION ADVANCE. X.3949. X.928. Y8685 X.9780. Owing to the greater range of ignition timing required by the EAC. the relationship between the magneto… | ||
| scan0002 | Design sketch and notes for a combined magneto and battery ignition automatic advance hydraulic relay. | ||
| View original record | X8685 SECRET To E. from R. c. CJ. RG. HS. c. DA. EY. c. Mr. Claremont. RL/M3.4.34. E. A. C. X.3949. X.978C. X.9040. X8685 COMBINED MAGNETO & BATTERY IGNITION AUTOMATIC ADVANCE (RR. HYDRAULIC RELAY). I… | ||
| scan0003 | Description and diagrams of a double-acting, 5-piston valve arrangement. | ||
| View original record | -2- As you will remember the central valve is in equilibrium and should take practically no force to move. It only needs to move .1 up and down to uncover inlet and exhaust ports. I found considerable… | ||
| scan0004 | Technical notes on an automatic ignition advance mechanism, including a diagram, and considerations for piston design to prevent knocking. | ||
| View original record | (3) To keep all dirt out of the central valve there will be a fine gauze filter at the entrance. The piston unit, valve, and cyl. should easily come away for cleaning. Somewhere in the circuit of… | ||
| scan0005 | Diagram illustrating the battery and magneto ignition advance curves. | ||
| View original record | x8685 BATTERY IGNITION ADVANCE (FULLY ADVANCED AUTOMATICALLY) MAGNETO ADVANCE. (FULLY ADVANCED AUTOMATICALLY) B.D.P BATTERY IGNITION ADVANCE. (FULLY RETARDED AUTOMATICALLY) MAGNETO ADVANCE. (FULLY… | ||
| scan0006 | Ignition systems and detonation issues in the 40/50 model, comparing different ignition setups. | ||
| View original record | X8685 TO HS. FROM R. R1/M1.7.24. copy to CJ. BJ. " RG. FPC. " BY. H. " PN. H. " EP. re. IGNITION & DETONATIONS. 40/50 ETC. My own experiences confirm that it is not good to have only one ignition… | ||
| scan0007 | Alterations to the ignition governor advance curve for the EAC engine. | ||
| View original record | To Hs. from E. c. to CJ. c. to EFC. c. to EY. X.2685 S E C R E T E1/M9.8.24. E. A. C. X.6140. X.3949. X.4780. IGNITION GOVERNOR. In dealing with the proposed ignition governor for the EAC. engine,… | ||
| scan0008 | Secret memo about requiring a larger hole in the crankcase for the ignition governor. | ||
| View original record | X 8685 To BY. from E. c. to HS. S E C R E T. E2/M16.8.24. E. A. C. CRANKCASE & IGNITION GOVERNOR. X.9000 X.9140 Regarding the above we find we shall require a larger hole in the crankcase for the… | ||
| scan0009 | Table of figures showing automatic advance settings for the WAC.2 engine. | ||
| View original record | X8685 21.8.24. X.3949. AUTOMATIC ADVANCE FOR WAC.2 ENGINE. X8685 (Figures supplied by Hs. showing maximum and minimum engine degrees B.D.P. at which maximum power is maintained for various speeds).… | ||
| scan0010 | Sending of various curves for the EAC.II and 20 HP engines' automatic advance. | ||
| View original record | SECRET X8685 To R. from EPC. E. A. C. EFC9/T27.8.24. c. E. c. CJ. AUTOMATIC ADVANCE - EAC.II. (AND 20 HP.) ENGINE. X3949 X8685 X3485 Reference EL/M9.8.24. We are sending, addressed to E. under… | ||
| scan0011 | Continued page describing tracings and curves for various ignition systems and their application. | ||
| View original record | Contd. -2- EFC9/T27.8.24. These tracings are labelled (in red) "R.R. Battery Ignition" "Scintilla AM-6-A Magnetos (average curve), "Scintilla AG-6-A Magnetos" and "General Magneto Specification". All… | ||
| scan0012 | Comparison of engine performance curves using tracing paper and providing further photostat curves. | ||
| View original record | Contd. -3- EPC9/T27.8.24. This is put on tracing paper so that it may be compared by super-position with the curves for the 20 HP., from figures supplied by Ms. on 3.2.22. but the absolute position of… | ||
| scan0013 | Sub-groups of ignition advance curves for various engines and ignition systems. | ||
| View original record | Contd. -4- EFC9/T27.8.24. Of these.:- Sub-group A is with reference to battery ignition on 20 HP. chassis only, and contains:- (1) A curve obtained by calculation judged to be the nearest possible to… | ||
| scan0014 | Instructions and analysis regarding average advance curves for various Scintilla magnetos and a 20 HP engine. | ||
| View original record | Contd. -5- EFC9/T27.8.24. (4) Average advance curve of AM-6-A Scintilla magnetos (5) Average advance curve of AG-6-A Scintilla magneto No. 21523. (6) Average advance curve of AG-6-A Scintilla magneto.… | ||
| scan0015 | Battery and magneto ignition specifications and settings for the EAC.2 engine. | ||
| View original record | Contd. -6- EFC9/T27.8.24. this is liable to be exceeded by a few degrees, so that the maximum advance of the battery ignition may be this amount less than the 60° b.d.p. stated. A photostat diagram… | ||
| scan0016 | Synchronizing battery and magneto ignition advances and a formula for flick start hand control settings. | ||
| View original record | Contd. -7- EPC9/T27.8.24. The two advances of the battery ignition in this diagram are the same as at present on the 20 HP. Those for the magneto ignition are as specified in our general specification… | ||
| scan0017 | Technical note detailing the 20 HP battery ignition governor spring and distributor speed limits. | ||
| View original record | Contd. -8- EFC9/T27.8.24. between the degrees of advance on the battery ignition and the hand lever. Lastly, with reference to K's final query, there is a slight initial set on the 20 HP. battery… | ||
| scan0018 | Graph showing the required ignition advance range for an E.A.C.II engine at various speeds. | ||
| View original record | E.A.C.II. Gr I Maximum Minimum ENGINE DEGREES B.D.P. B.D.P. A.D.P. ENGINE SPEED. R.P.M. CURVES SHOWING THE IGNITION ADVANCE REQUIRED ON E.A.C.II ENGINE. (FIGURES SUPPLIED BY Hs.) 22-8-24 THE CURVES… | ||
| scan0019 | Secret memo detailing progress and issues with the combined automatic advance for magneto and battery ignitions, along with related modifications. | ||
| View original record | x8/85 To Hs. from R. c.c. to CJ. c. to EY. c. to EFC. SECRET R4/M5.9.24. E.A.C.II. IGNITION ETC. COMBINED AUTOMATIC ADVANCE X.8686. BY RELAY. X.3949. We have nearly completed the R.R. automatic… | ||
| scan0020 | Design of automatic advance mechanisms for battery and magneto ignition systems. | ||
| View original record | SECRET X8685 To BY. from E. c. to CJ. c. to Hs. E.A.C.II. E1/M13.9.24. AUTOMATIC ADVANCE FOR BATTERY AND MAGNETO IGNITIONS. X.3949. X.8680 X.8685. We send herewith drawings LeC.1916/17/19/21., dealing… | ||
| scan0021 | Blueprints, patent work for an automatic relay device, and the importance of secrecy. | ||
| View original record | E1/M13.9.24. -2- Contd. complete, as you will find, but we have retained blue prints of the drawings requiring attention, and will send on the remaining particulars as soon as ever possible. In the… | ||
| scan0022 | Test results for an oil relay automatic ignition control system. | ||
| View original record | To R. from Hs/Rm. c. to CJ. BJ. c. to RG. E. c. to DA. BY. c. to Wor. X8685 Hs9/LG11.12.24. OIL RELAY AUTOMATIC IGNITION CONTROL. X8685 We have completed a number of tests with the oil relay governor… | ||
| scan0023 | Difficulties encountered with the governor spring, oil relay piston, and cold oil effects. | ||
| View original record | contd :- -2- governor spring 2/3 the rating. Though this gives the correct advance at very low speeds it is no use higher up the scale, it is also unsuitable for reasons described later. The chief… | ||
| scan0024 | Governor spring and ignition advance performance with varying oil conditions and viscosity. | ||
| View original record | contd :- -3- Even with the strong governor springs, the return is very erratic when the oil is cold. (4) We have not quite the full range on the governor advance. This is due to the location of the… | ||
| scan0025 | Confirmation of a telegram from Royce to Hives regarding working clearances in the relay ignition advance. | ||
| View original record | X8685 CONFIRMATION OF TELEGRAM. WEST WITTERING. 15. 12. 24. HIVES. ROYCAR. DERBY. TRY GREATER WORKING CLEARANCES IN RELAY IGNITION ADVANCE. ROYCE. | ||
| scan0026 | Tests for an EAC Relay Ignition Governor. | ||
| View original record | R.R. 493 (40 H) (SL 42 12-7-23). J.H., D. X8685 EXPERIMENTAL REPORT. SECRET COPIES TO: R.CJ. BJ. WOR. By. E. Da. EP. PN. OY. RG. Expl. No. X8685 REF. Hs/Rm2/LG18.12.24. OBJECT OF TEST. TESTER. Tests… | ||
| scan0027 | Governor control springs, including forces, stiction, and the resulting ignition advance curve. | ||
| View original record | -2- EXPERIMENTAL REPORT. Expl. No. REF. Hs/Rm2/LG18.12.24. spring A, 3 lbs. with spring B. The actual working difference between the two is therefore greater than the 50% previously given. The… | ||
| scan0028 | Graph of ignition advance curves obtained for an oil relay ignition governor. | ||
| View original record | OIL RELAY IGNITION GOVERNOR IGNITION ADVANCE CURVES OBTAINED FLYWHEEL IGNITION ADVANCE ° 60° 50° 40° 30° 20° 10° 0° ENGINE R.P.M. 1000 2000 3000 A B S A. CURVE OBTAINED WITH WEAK SPRING 1.LB 5 1/2oz… | ||
| scan0029 | Posing questions and suggestions regarding the performance of the E AC Relay Ignition Governor. | ||
| View original record | To Hs/Rm. from EFC. X8685 EFC1/T22.12.24. X.8685. E AC. RELAY IGNITION GOVERNOR. (1) Is the shape of the automatic advance curve on an engine speed base independent of the position of the hand advance… | ||
| scan0030 | Oil relay ignition control failure and the recommended alternative ignition system. | ||
| View original record | R.R. 493A (50H) (D.B. 175 25-9-24) J.H.D. V8685 EXPERIMENTAL REPORT. Expl. No. REF: Hs/1/1093.12.24. To R. from Hs. c. to CJ. BJ. c. to E. DA. c. to EY. Wor. SECRET. X8770 X8685 EAC, 'V' SERIES. We… | ||
| scan0031 | Continued document page detailing ignition lever positions and retard for battery ignition systems. | ||
| View original record | -2- Contd. EFC1/T22.12.24. more advanced positions of the ignition lever, and the extra retard of the battery ignition for the more retarded positions of that lever. This method of representation is… | ||
| scan0032 | Functionality and ignition advance curves of an Oil Relay Governor. | ||
| View original record | X.5685. To EFC. from Hs/Rm. Hs/Rm1/LG23.12.24. EAC. OIL RELAY GOVERNOR. In answer to your EFC1/T1.12.24. The reply to questions 1. and 2. is in the affirmative subject always to the accuracy at which… | ||
| scan0033 | Tests for an oil relay ignition governor. | ||
| View original record | R.R. 493 (40 H) (SL 42 12-7-23). J.H., D. X8685 EXPERIMENTAL REPORT. COPIES TO: (RCJ) (BJ) WOR By E. Da (Struck through) RN OV. (handwritten) RG (handwritten) Expl. No. X8685 REF. Hs1/LG24.12.24.… | ||
| scan0034 | The EAC ignition oil relay, testing the performance of the inner piston diameter under varying conditions. | ||
| View original record | R.R. 493A (50H) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. Expl. No. REF: Hs/Rm/LG23.12.24. EAC. IGNITION OIL RELAY. (1) Inner piston diameter. From the point of view of stiction when the… | ||
| scan0035 | Piston design, comparing aluminium and steel, and discussing clearances and materials. | ||
| View original record | R.R. 493A (50B) (D.B. 175 25-9-24) J.H.D. -2- Expl. No. REF Hs/Rm/LG23.12.24. EXPERIMENTAL REPORT. The main point is that with this clearance, we have not had the two pistons running up together.… | ||
| scan0036 | Issues with piston rod length, governor springs, and controls. | ||
| View original record | R.R. 493A (50m) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. -3- Expl. No. REF. Hs/Rm/LG23.12.24. (2) Length of piston rod. The length of the rod connecting the small piston to the governor lever… | ||
| scan0037 | The fine adjustment of magneto timing via the serrated drive on the dynamo shaft. | ||
| View original record | R.R. 493A (50H) (D.B. 175 25-9-24) J.H.D. -4- EXPERIMENTAL REPORT. Expl. No. REF:Hs/Rm/LG23.12.24. just sufficient range. This means that in the fully retarded position, the magneto sleeve has to be… | ||
| scan0038 | Ignition advance curves obtained with the oil relay ignition governor. | ||
| View original record | x8685 To E. from Hs/Rm. Hs/Rml/LG29.12.24. OIL RELAY IGNITION GOVERNOR. x8685 With reference to the ignition advance curves obtained with the oil relay. We note that LeC.1917 gives two curves of… | ||
| scan0039 | Graph plotting oil relay advance curves for flywheel ignition against engine RPM. | ||
| View original record | OIL RELAY ADVANCE 29/12/24 ALUMINIUM PISTON .618 DIA OIL TEMP 50°C. OIL PRESSURE 25-32 LBS/□" FLYWHEEL IGNITION ADVANCE ENGINE R. P. M. SPECIFIED CURVE OBSERVED CURVE OBSERVED CURVE 45° FULLY ADVANCED… | ||
| scan0040 | Confirmation of a telegram detailing troubleshooting advice for relay and filter issues. | ||
| View original record | X86/85 CONFIRMATION OF WIRE. WEST WITTERING. 30. 12. 24. HIVES. ROYCAR. DERBY. TELEGRAM RECEIVED FROM ROYCE AS FOLLOWS:- ELLIOTT RELAY TROUBLE SHOULD BE CURED BY MODERATE CLEARANCE AND EFFICIENT… | ||
| scan0041 | Telegram from Royce to Elliott with instructions for curing a relay trouble using filters and valves. | ||
| View original record | POST OFFICE TELEGRAPHS. (1156) EM2528 15,000M 21/8/23 R.&Co.Ltd. E1501. Handwritten Reference: X8685 Office Stamp: DERBY 7 OCDE24 A Recd. from: Bm By: WD Prefix: P Handed in at: 11.56 M. Office of… | ||
| scan0042 | On a Post Office Telegram form regarding the trial of an oil system. | ||
| View original record | (1156) EM/252B 15,000M 21/8/23 R.&Co.Ltd. E1501. B or C. Charges to pay s. d. Recd. from. By (WS). Prefix. Handed in at. POST OFFICE TELEGRAPHS. If the receiver of an Inland Telegram doubts its… | ||
| scan0043 | Initial tension, spring ratings, and alterations for an oil relay ignition governor. | ||
| View original record | X8685 To RHC. from Hs/Rm. Hs/Rm1/LG31.12.24. OIL RELAY IGNITION GOVERNOR. X8685 OIL RELAY. (1) We are anxious to know the initial tension and rating of the springs on the governor we recently gave you… | ||
| scan0044 | Weight tolerances, modifications to pistons, piston material, and throttle governor controls. | ||
| View original record | -2- (a) .375 lbs. ± 2 oz. (b) 2.75 lbs. ± 4 oz. (c) 4.25 lbs. ± 4 oz. We consider this will be the easiest condition in which to test this item on production, the spring balance we have used is not… | ||
| scan0045 | The testing and performance of an oil ignition relay device. | ||
| View original record | X. 8685 To Hs. from Hs/Rm. Hs/Rm/LG31.12.24 OIL IGNITION RELAY. This device is now a reasonable working proposition. The aluminium piston fitted has a clearance of .007". This we consider to be the… | ||
| scan0046 | Page discussing magneto drive accuracy and a proposed material change for inner pistons. | ||
| View original record | contd :- -2- of trouble as it does not allow the magneto to be set with sufficient accuracy. It appears to be impossible to increase the number of teeth in the drive with a view to overcoming this… | ||
| scan0047 | Selection of an ignition advance curve for the EAC engine's oil relay ignition governor. | ||
| View original record | To Hs. from E. c. to CJ. X.8685. S E C R E T E1/M31.12.24. E. A. C. OIL RELAY IGNITION GOVERNOR. In reply to your memo. Hs/RM1/LG291224., drawing No. LeC.1917., shews three different ignition advance… | ||
| scan0048 | Ignition advance systems, relay advance issues, and oil selection for the 'V' Series. | ||
| View original record | X8685 To Hs. & E. from EFC. c. to CJ. BJ. S E C R E T. R1/M31.12.24. c. to RG. BY. c. to DA. E. A. C. 'V' SERIES. IGNITION ADVANCE. I had arranged that if the relay advance was not yet reliable, to… | ||
| scan0049 | Secret memo regarding fitting a fine gauze strainer to an oil relay ignition governor. | ||
| View original record | X. 8685 To Hs. from E. S E C R E T. E. A. C. E4/M31.12.24. RE. OIL RELAY IGNITION GOVERNOR. X. 8685. Regarding the above we suggest that you fit up a strainer with some very fine gauze and observe its… | ||
| scan0050 | Graph illustrating the effect of reduced oil pressure and increased oil temperature on ignition advance versus engine RPM. | ||
| View original record | OIL RELAY ADVANCE EFFECT OF REDUCED OIL PRESSURE AND INCREASE OIL TEMP FLYWHEEL & IGNITION ADVANCE MAX ADV MIN ADV STEEL PISTON DIA .618" INITIAL SPRING DEFLECTION 8° GOVERNOR SPRINGS GIVE 1 LBS 9 1/2… | ||
| scan0051 | Graph of ignition advance in flywheel degrees versus engine RPM for two engines with a 4-1 compression ratio. | ||
| View original record | E.A.C. IGNITION ADVANCE REQUIRED. 48685. 1/11/25. IGNITION ADVANCE. FLYWHEEL DEGREES. ----- MAX POWER MAINTAINED. ----- POWER DROPS 4%. 4-1 COMPRESSION RATIO. CURVES OBTAINED FROM TWO ENGINES.… | ||
| scan0052 | Tests on an oil relay ignition governor for an EAC engine. | ||
| View original record | X. 3685 To Hs. from Hs/Rn. Hs/Rnl/LG2.1.25. OIL RELAY IGNITION GOVERNOR. We have carried out further tests to determine the limits of ignition advance between which an EAC. engine with a 4 to 1… | ||
| scan0053 | Recommendations for the design of pistons used in the oil relay ignition governor. | ||
| View original record | X8685 To BY/Shn. from Hs/Rm. Hs/Rn1/LG2.1.24. OIL RELAY IGNITION GOVERNOR. X8685 The oil relay ignition advance is now a working proposition. We recommend the following points should be noted :- (1)… | ||
| scan0054 | Potential fouling issue between a lever and piston, and the results of torsion spring tests. | ||
| View original record | contd :- -2- (3) We find that lever E.72459 will foul the top of piston E.72503 when it drops to exhaust from the fully advanced position unless the size of the neck of the rod is accurately machined.… | ||
| scan0055 | The testing of springs for an oil relay governor ignition system and their load rating. | ||
| View original record | X8685 To BY/Shn. from Hs/Rm. Hs/Rml/LG3.1.25. OIL RELAY GOVERNOR IGNITION. We have now tested the springs which are giving us satisfactory results on the governor.for actual rating. We find that the… | ||
| scan0056 | Test results for an oil relay ignition advance system, focusing on piston clearances and oil leakage. | ||
| View original record | +8685 Hs. from Rm. Hs/Rm2/LG3.1.25. OIL RELAY IGNITION ADVANCE. This is now a reasonable working proposition. The pistons we are fitting having a diameter of .618" or .007" clearance. We can detect a… | ||
| scan0057 | The 'V' series chassis, detailing its progress and a fix for the oil relay governor. | ||
| View original record | R.R. 493A (50H) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. Expt. No. 48685 REF. Hs6/LG8.1.25. To R. from Hs. c. to CJ. BJ. c. to E. DA. c. to BY. Wor. S E C R E T. 'V' SERIES CHASSIS. X8770 WW.… | ||
| scan0058 | Request for two modified open-wound springs for an Ignition Governor to reduce internal friction. | ||
| View original record | To RHC. from Hs/Rn. X.8685 Hs/Rm1/LG20.1.25. IGNITION GOVERNOR. We require 2 springs for this Governor similar to E.72945 but with one less coil, and open wound. This is in order to reduce internal… | ||
| scan0059 | Highlighting potential wear on oil relay advance control joints and suggesting they be made larger. | ||
| View original record | To R. from Hs. c. to CJ. BJ. c. to E. DA. c. to BY. Wor. S E C R E T. X8685 Hs1/LG23.1.25. EAC. 'V' SERIES. OIL RELAY ADVANCE. X8685 X41810 When the car is on the road, the oil relay advance is… | ||
| scan0060 | The initial results and difficulties encountered with the EAC Oil Relay Ignition Governor. | ||
| View original record | HS from Rm X8685 INITIAL RESULTS EAC. OIL RELAY IGNITION GOVERNOR. The main difficulties encountered so far with this device are :- (1) The large piston carrying the cup leather kept in position by a… | ||
| scan0061 | Issues with the ignition advance governor, specifically friction, stiction, and clearance problems preventing full advance. | ||
| View original record | -2- The net result of this negative torque,friction in the governor element, and stiction in the piston, is that ignition advance will not commence at 500 r.p.m. under the most favourable conditions.… | ||
| scan0062 | Suggested modifications to engine controls, including the relay lever and governor spring. | ||
| View original record | -3- on the crankshaft. We suggest increasing the length of the external lever on the relay slightly to ensure the full range, and allow for subsequent wear in the controls. (4) We have not yet got a… | ||
| scan0063 | Letter suggesting the design of a centrifugal oil separator for the 'EAC' ignition oil relay gear to prevent failures. | ||
| View original record | X 8685 ROLLS-ROYCE, LTD. 14-15 CONDUIT STREET LONDON W.1 TELEGRAMS "ROLHEAD, PICCY, LONDON" TELEPHONES MAYFAIR 6040, 6041, 6042, 6043 IN YOUR REPLY PLEASE QUOTE CWB2/TB/26125. PRIVATE. 26th. January,… | ||
| scan0064 | Instructions for production regarding the oil relay ignition governor after testing governor springs. | ||
| View original record | To BY/SS. from Hs/Rm. X8685 Hs/Rm1/LG28.1.25. OIL RELAY IGNITION GOVERNOR. The following are the instructions which we have given to production, after testing governor springs. We suggest you put the… | ||
| scan0065 | Laboratory report on the viscosity tests of Sperm, Gas engine, and Lard oils at different temperatures. | ||
| View original record | COPY. X8G85 Hs. for Mr.Robotham. H17/EA29.1.25 Laboratory. As requested we have made tests on the oils submitted and have obtained the following results :- Oil. Viscosity at 15 C Viscosity at 28 C.… | ||
| scan0066 | Secret internal memo regarding instructions for oil relay ignition control and the carburetter. | ||
| View original record | X8686 To Wor. To BY. To E. c. to EP. c. to MX. FROM HS. Hs2/LG30.1.25. S E C R E T. E. A. C. We attach herewith for your information instructions re :- (1) OIL RELAY IGNITION CONTROL. (2) CARBURETTER.… | ||
| scan0067 | Instructions for ignition settings and testing procedures for the oil relay ignition governor. | ||
| View original record | TEST DEPARTMENT. OIL RELAY IGNITION GOVERNOR. Ignition settings and oil relay testing. The setting of the ignitions with the oil relay device can be best accomplished as follows :- The control rods… | ||
| scan0068 | Instructions for setting the magneto ignition timing and its associated control linkages. | ||
| View original record | contd :- -2- The correct timing for the magneto is 12° B.T.C. with the hand control lever in the fully retard position. One tooth on the serrated coupling alters the timing by 6° on the flywheel. It… | ||
| scan0069 | Instructions for diagnosing and adjusting the ignition advance mechanism and linkage. | ||
| View original record | contd :- -3- 47° ± 2° B.T.C. If this does not occur, Rod E.72614 should be disconnected and the test repeated; if this enables the required range to be obtained, the obstruction was due to the magneto… | ||
| scan0070 | Troubleshooting guide for an oil relay and ignition advance mechanism. | ||
| View original record | contd : -4- oil relay. It is desirable that the working of the relay should actually be checked on the car before it leaves the Works. (handwritten: Derby) This can be accomplished in the same manner… | ||
| scan0071 | The effects of control stiffness and the characteristics of the ignition advance. | ||
| View original record | contd :- -5- Stiffness in the controls occasioned by a tight magneto sleeve or any other cause will obviously affect the relay in any one of the three ways enumerated. On the road, the characteristics… | ||
| scan0072 | Testing procedures for the oil relay ignition governor springs and freedom of movement. | ||
| View original record | E. A. C. OIL RELAY IGNITION GOVERNOR. GOVERNOR SPRINGS. The springs to be used on the governor should be tested for rating on the rig provided. The estimation of the rating of a torsion spring being… | ||
| scan0073 | Assembly and testing instructions for a governor, detailing spring settings and pull force specifications. | ||
| View original record | contd :- -2- GOVERNOR ASSEMBLY. The governor should be dismantled after the last test and the springs placed in position. The correct spring setting is a set up of 8° from the free position of the… | ||
| scan0074 | Instructions for setting and testing an Oil Relay Mechanism. | ||
| View original record | contd :- -3- OIL RELAY MECHANISM. When the chamber E.72376 containing this element is in position, the distance of the extremity of the lever E.72459 from the face of the chamber to the centre of Pin… | ||
| scan0075 | Instructions for fitting and troubleshooting an oil relay assembly and governor, including potential ignition issues. | ||
| View original record | contd :- -4- admitted to the relay. This should move lever E.72518 through 1.5º ± .5º. The subsequent movement of this lever under increasing r.p.m. of the governor should conform with the attached… | ||
| scan0076 | List of potential faults and their causes related to piston, lever, and governor mechanisms. | ||
| View original record | contd :- -5- (c) Grit between the two pistons. (d) Lost movement on lever E.72459 or between Cap E.72506 and lever E.72504. (2) Ignition will not return from the fully advance position. This may be… | ||
| scan0077 | Blueprint showing the approximate setting of eccentrics for a hand control linkage. | ||
| View original record | R.R. 885 (SH) | D B 4 17-7-24 J.H. & Co LTD Nº OPERATION MACHINE TOOL TOOL Nº APPROXIMATE SETTING OF ECCENTRICS. HAND CONTROL IN FULLY ADVANCED POSITION FINAL ADJUSTMENT TO BE CARRIED OUT, TO OBTAIN… | ||
| scan0078 | Graph showing oil relay lever angular movement against engine and governor RPM. | ||
| View original record | OIL RELAY MOVEMENT. ANGULAR MOVEMENT LEVER. E.72518. 30°, 28, 26, 24, 22, 20°, 18, 16, 14, 12, 10°, 8, 6, 4, 2. INITIAL ADVANCE 1.5°. ADJUSTMENT BY WASHERS TO CUT OFF MOVEMENT AT 24°. ENGINE R.P.M.… | ||
| scan0079 | Objections to the Scintilla magneto and alternative ignition control systems for 'V' series engines. | ||
| View original record | HS. E. ) DA. EY. ) from R. CJ. BJ. ) PN. CWB.) X8685 SECRET. RL/M31.1.25. E. A. C. 'V' SERIES IGNITION CONTROL. X.8685. X.4187. X.8680. X.8690. I have written at various times my reasons for this… | ||
| scan0080 | Anxieties over engine detonations from a new head design with two governors and wide-apart plugs. | ||
| View original record | Contd. -2- R1/M31.1.25. sufficiently reliable - my only anxiety. In the case of 2 separate governors one may act more quickly, and also both may be somewhat erratic and cause inexplicable detonations… | ||
| scan0081 | Testing procedure for rating governor torsion springs. | ||
| View original record | GOVERNOR SPRINGS. The springs to be used on the governor should be tested for rating on the rig provided. The estimation of the rating of a torsion spring being an awkward proposition practically, the… | ||
| scan0082 | Secret memo regarding the testing of EAC Ignition Governor Springs to determine their rating and revise production limits. | ||
| View original record | V 8685 To Sft. from Hs/Rm. S E C R E T. Hs/Rm1/LG2. 2. 25. EAC. IGNITION GOVERNOR SPRINGS. With reference to the above springs, we have only had a few of these made. They were adapted from a spring… | ||
| scan0083 | Containing a telegram discussing potential issues and improvements for a gearbox. | ||
| View original record | HS. X8685 BY3/H. 2. 2. 25. We give below copy of telegram received from R. on the 31st ultimo:- "ROYCAR DERBY ANGLETERRE. BAILEY NOTHING SEEMS SERIOUSLY "WRONG WITH RELAY ADVANCE IF TESTERS ADOPT… | ||
| scan0084 | Issues and improvements for the Relay Advance and Four Speed Box. | ||
| View original record | To E. DA. AJS. from R. c. to CJ. BJ. Wor. c. to RG. Hs. BY. S E C R E T. +8685 R1/M3.2.25. E. A. C. U. S. A. X.8565 X.5310 RE. RELAY ADVANCE, AND FOUR SPEED BOX. Below you will see copy of telegram… | ||
| scan0085 | Design improvements for pinions and shafts, including tooth angle and clearances. | ||
| View original record | contd :- -2- with others of our and other makes. You will find good timing by plungers or a certain free movement and ample clearances. The bigger pinions suggested by me may be better and any… | ||
| scan0086 | Requesting to try stronger torsional springs for the EAC ignition governor. | ||
| View original record | To BY/SS. from Hs/Rm. 18685 Hs/Rm2/LG5.2.25. OIL RELAY IGNITION. We should like to remind you that we hope to be able to try shortly the xxxxx strongest possible torsional springs which you can get on… | ||
| scan0087 | Secret memorandum regarding the automatic advance ignition mechanism and a suggested design change. | ||
| View original record | To BY. from E. cf to CJ. c. Hs/Rm. X.8685. El/M11.2.25. S E C R E T. E. A. C. AUTOMATIC ADVANCE IGNITION MECHANISM. X.8685. Referring to the scale lever shewn on drawing LeC.1926., whereby the motion… | ||
| scan0088 | List of compression springs that can be used in the Relay Crosshead for the Ignition Governor. | ||
| View original record | Tp Hs/Rm. X8685 BY/SS4/DB.16.2.25. X.8140 - EAC.VI - IGNITION GOVERNOR. We give below a list of compression springs which may be used in the Relay Crosshead, acting in addition to Spring E.72497:-… | ||
| scan0089 | Magneto and requesting a modification for springs in the oil relay. | ||
| View original record | X8685 Mr. Shelton c. Hs. -------- BY8/H. 26. 2. 25. ----------------- Hs/Rml/LG. 24.2.25. I attach hereto copy of Hs/Rml/LG.25.2.25. and I have written re the magneto to find Norths' views in regard… | ||
| scan0090 | Tests to prevent the inner piston in the ignition relay from sticking due to oil impurities. | ||
| View original record | R.R. 493A (50H) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. Expl. No. +8688 REF: Hs3/LG28.2.25. To R. from Hs. c. to CJ. BJ. c. to RG. E. c. to DA. BY. c. to Wor. SECRET. EAC. OIL RELAY GOVERNOR.… | ||
| scan0091 | Operational certainty of an EAC oil relay governor mechanism. | ||
| View original record | X8685 C.J. HS3/LG-28/2/25 Re EAC Oil Relay Governor. CWB9/LH2.3.25. The attached is noted. I certainly consider that the only method by which we shall achieve certainty of operation in this mechanism… | ||
| scan0092 | Instruction book page detailing the function, cleaning, and troubleshooting procedures for the oil relay. | ||
| View original record | To BY/N.W. from Hs/Rm. X8685 Hs/Rm/LG3.3.25. INSTRUCTION BOOK. OIL RELAY. (1) Indication of Relay functioning. An indication as to whether the oil relay is functioning can be obtained by observing the… | ||
| scan0093 | Instructions for dismantling a relay due to grit between the pistons. | ||
| View original record | contd :- -2- does not move with a pull of about 1½ lbs. it is probable that grit is present between the two relay pistons. The relay should therefore be dismantled as follows :- The split pin… | ||
| scan0094 | Secret memo requesting suggestions for laboratory tests to justify a new automatic ignition control system. | ||
| View original record | 48695 PN8/DN12.3.25. TO Hs Secret. FROM PN Re E.A.C. It is more than likely that we may have elaborately to justify the existence of our new automatic ignition control, in view of criticism which may… | ||
| scan0095 | Suggesting a cooler for the ignition oil relay to prevent damage from high temperatures during bench tests. | ||
| View original record | To Mx. from Hs/Rm. X8685 Hs/Rml/LG18.3.25. IGNITION OIL RELAY. We find that the temperature attained by the engine oil during prolonged dynamometer or bench tests is very considerably in excess of… | ||
| scan0096 | Oil relay governor ignition system, discussing advantages over other schemes and the benefits of synchronized dual spark plugs. | ||
| View original record | To PN. from Hs. S E C R E T. X8685 Hs1/LG18.3.25. R-R OIL RELAY GOVERNOR IGNITION. X8680 Attached herewith are some notes in connection with the above. We do not know of any laboratory tests which… | ||
| scan0097 | Oil relay governor ignition, explaining the phenomenon of engine detonation. | ||
| View original record | R.R. 493A (50H) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. Expl. No. REF: Hs/Rm/LG17.3.25. R-R OIL RELAY GOVERNOR IGNITION. EXPLANATION OF INCEPTION AND ADVANTAGES. The phenomena of detonation is… | ||
| scan0098 | Engine detonation, proposing a dual ignition system as a solution for larger engines. | ||
| View original record | R.R. 493A (50H) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. -2- Expl. No. REF: hs/Rm/LG17.3.25. sparking plug to the remotest point on the surface of the combustion chamber. This conforms with what… | ||
| scan0099 | Dual ignition system with automatic advance via an oil relay. | ||
| View original record | R.R. 493A (50H) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. -3- Expl. No. REF:Hs/Rm/LC17.3.25. expected to maintain this synchronisation over their full range indefinitely. This would mean that the… | ||
| scan0100 | Automatic ignition controls and the inspection of car 98-NK for joint improvements. | ||
| View original record | To E. from Hs. 48685 Hs4/LG23.3.25. RE. AUTOMATIC IGNITION CONTROLS. In reply to your written note dated 22.3.25. We are expecting 98-NK car, which has run 10,000 miles in France, to return at the end… | ||
| scan0101 | Request for figures for curves for springs E.73152 and E.73203, for the Ignition Governor. | ||
| View original record | X8685 To Hs/Rm. BY/SS3/DB.26.3.25. Re EAC.VI - Ignition Governor - Sec:5120. Will you please supply us with the figures for curves for springs E.73152 and E.73203, similar to those supplied for Spring… | ||
| scan0102 | The failure of an oil ignition relay due to a perished cup leather from high oil temperature. | ||
| View original record | R.R. 493A (50H) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. To R. from Hs. c. to CJ. BJ. c. to RG. E. c. to BY. DA. c. to Wor. Expl. No. REF Hs2/LG31.3.25. 48685 S E C R E T. EAC. - OIL IGNITION… | ||
| scan0103 | Instruction to omit the troublesome spring ring from future Oil Relay parts. | ||
| View original record | SFO. Hs. DY/SS. X.8685 BY6/H. 3.4.25. ---e--- We find that on the Oil Relay the Experimertal Dept. have found the spring ring which is causing the Works some trouble, is not necessary. Will you… | ||
| scan0104 | Request to test the durability of two different types of cup leather for an oil relay at various temperatures. | ||
| View original record | To H1. from Hs/Rm. H685 OIL RELAY. Hs/Rm1/LG6.4.25. We are letting you have several samples of the two different types of cup leather which we are running on the oil relay. We should like you to carry… | ||
| scan0105 | Removal of an oil relay ignition governor from a test rig for further testing. | ||
| View original record | To BY/SS. from Hs/Rm. X8685 Hs/Rml/LG9.4.25. RE. OIL RELAY IGNITION GOVERNOR. We have removed the governor from our test rig fitted up with the springs which we specify and herewith hand same to you… | ||
| scan0106 | Oil relay ignition governor, detailing performance issues and proposed solutions. | ||
| View original record | R.R. 493A (50H) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. Expl. No. X8685 REF: Hs/Rm1/LGK6.4.25. To BY/SS. from Hs/Rm. c. to RHC. OIL RELAY IGNITION GOVERNOR. We have tested a production oil… | ||
| scan0107 | Modifying a governor's performance curve, providing a data table of engine RPM versus lever movement. | ||
| View original record | R.R. 493A (50H) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. -2- Expl. No. REF: Hs/Aml/LGL6.4.25. After trying a number of governors fitted with E.73203 we should like to [REDACTED] modify the curve… | ||
| scan0108 | Investigations of the oil relay governor. | ||
| View original record | X8585 EXPERIMENTAL REPORT. COPIES TO: R.CJ. BJ. WOR. By. E. Da. EP. PN. OY. Expl. No. 8685 8980 REF. Hs5/LG21.4.25. OBJECT OF TEST. Investigations on oil relay governor. TESTER. W. A. Robotham.… | ||
| scan0109 | Modifications to the Oil Relay Ignition Governor, focusing on inner piston clearances and foreign matter filtration. | ||
| View original record | R.R. 493A (50H) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. Expl. No. REF: Hs/Rml/LG21.4. OIL RELAY IGNITION GOVERNOR. We should like to recapitulate the modifications which have been made to this… | ||
| scan0110 | Modifications to engine ignition advance and control springs. | ||
| View original record | R.R. 493A (50H) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. -2- Expl. No. REF:Hs/Rm1/L.G21.4. in the pipes or relay on assembly rather than dirt working up from the sump. Neither of the 10,000… | ||
| scan0111 | Issues with a magneto sticking and the failure of cup leathers. | ||
| View original record | R.R. 493A (50m) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. -3- Expl. No. REFms/FmL/LG21./ The magneto also had a tendency to stick partially advanced if the engine was suddenly stopped when… | ||
| scan0112 | The failure of cup leathers due to high oil temperatures and viscosity changes in engines. | ||
| View original record | R.R. 493A (50H) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. -4- Expl. No. REF: Hs/RM/L.G.23. particular spot. Whenever a cup leather failed it was found twisted over to the top side of the piston… | ||
| scan0113 | Tests for an ignition oil relay leather piston ring. | ||
| View original record | R.R. 493A (50H) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. Expl. No. REF: Hs/GIR/L.G21. IGNITION OIL RELAY LEATHER PISTON RING. Tests carried out on S-EAC-11 unit. Chrome leather ring of wider… | ||
| scan0114 | Graph showing the viscosity of Price's Motorine 'C' at various temperatures. | ||
| View original record | Graph Showing Viscosity of Price's Motorine 'C' at various temperatures Degrees Centigrade 100 90 80 70 60 50 40 30 20 10 0 Seconds 1000 2000 3000 4000 5000 | ||
| scan0115 | Graph of the ignition advance curve for an ignition relay governor, plotted against engine RPM under extreme working conditions. | ||
| View original record | IGNITION RELAY GOVERNOR. CONTROL SPRING E.73203 CHROME CUP LEATHER ALL BACK-LASH TAKEN OUT OF CONTROLS FLYWHEEL IGNITION ADVANCE POWER MAINTAINED. POWER DROPS 5%. OIL TEMP. 60°-70°C OIL PR. 25-35… | ||
| scan0116 | Ignition timing specifications for automatic control, magneto, and battery systems. | ||
| View original record | X 8685 14.5.25. X.8680/5. EAC. IGNITION TIMING. X.3949. ---------------------------------------- Range of automatic control 28º Full battery retard 10º after top centre. Full magneto retard 12º before… | ||
| scan0117 | Confirming a production fix by soldering the ball end on the Oil Relay Ignition Governor plunger. | ||
| View original record | To E. from Hs. X8685 OIL RELAY IGNITION GOVERNOR. Hs4/LG22.6.25. X8685 X8940 With reference to the report from France that the ball end at the bottom of the plunger on the Oil Relay came adrift. On… | ||
| scan0118 | Two experimental methods for preventing crankcase gas leakage via the ignition governor. | ||
| View original record | To RHC. (Strikethrough) c. to EFC. (Circled) ✓8685 (Handwritten) BY/SS3/DB.31.8.25. Re· 40/50HP Chassis - Ignition Governor - Sec:5120. X.8110. (Strikethrough) 8685 Please receive herewith two… | ||
| scan0119 | Proposed modification to the ignition control for the 40/50HP Chassis. | ||
| View original record | X8685 BY/SS3/DB.3.9.25. c. to Hs/Rm. Re 40/50HP Chassis - Ignition control. We understand the Test Dept: are setting the eccentric motion levers slightly different to that shown on our arrangement… | ||
| scan0120 | Instructing the replacement of a magneto and spring for the oil relay ignition control on car 98-NK. | ||
| View original record | To RHC. from Hs/Rm. X 8685 Hs/Rm1/LG19.1.26. OIL RELAY IGNITION CONTROL. Will you please fit the attached magneto to 98-NK car in place of the present one - remove spring E.73208 from the cap of the… | ||
| scan0121 | Removing an inner spring from the oil ignition relay due to a reduction in magneto sleeve friction. | ||
| View original record | To Hs. from Hs/Rm. X8685 Hs/Rml/LG12.2.26. OIL IGNITION RELAY. When the oil ignition relay was put into production initially, the positive limit for the friction on the magneto sleeve was 5 lbs. This… | ||
| scan0122 | Tests on the efficiency of ignition controls and an ignition oil relay. | ||
| View original record | Expl: Report. Expl: No. Ref. Hs/Rm2/LG16.2.26. To R. from Hs/Rm. c. to CJ. BJ. c. to RG. E. c. to DA. BY. c. to OY. Wor. IGNITION OIL RELAY. Efficiency of Ignition Controls. We have carried out tests… | ||
| scan0123 | Piston efficiency tests, including a diagram of the test apparatus. | ||
| View original record | contd :- -2- Our initial tests were therefore made with the object of dis- covering whether another type of piston would produce a better efficiency than the present standard cup leather. Our tests of… | ||
| scan0124 | Test report comparing the performance of different piston types and analyzing relay power. | ||
| View original record | contd :- -3- TYPE OF PISTON. 1000 r.p.m. Load lifted by piston. Oil press: 13.5 lbs/sq.in. Temp. 60°C (1) Standard Piston. Cup leather well worn and pliable. | 15 lbs. (2) As (1) with a light ring to… | ||
| scan0125 | The efficiency of an oil relay, detailing tests on expanding rings and the power required to operate controls. | ||
| View original record | contd :- -4- on "Efficiency of Oil Relay"). It will be seen from these figures that so far rings substituted for the cup leather have not proved a success. A light ring under the cup leather to expand… | ||
| scan0126 | Explanation of the forces and operation of the magneto hand control relay and pressure piston. | ||
| View original record | contd :- -5- the stiction with the engine stationary being counter-balanced by the fact that when running the cam action tends to retard the magneto to all the time. The condition is therefore that… | ||
| scan0127 | Investigation into piston efficiency, magneto alternatives, and the characteristics of an oil relay and ignition governor. | ||
| View original record | contd :- -6- of dealing with 27 lbs. due to the load required to operate the controls plus 10 lbs. due to the return spring. As we have shewn from our piston efficiency tests, an oil pressure of 15… | ||
| scan0128 | Analysis of a pressure piston system, focusing on the relationship between load, cut-off gap, leaks, and effective pressure. | ||
| View original record | contd :- -7- The load was further reduced, and at each reduction the pressure piston rose until with 40 lbs. load it has moved through 85% of the distance it would have traversed with no resistance to… | ||
| scan0129 | Page discussing the significance of oil pressure and its variation with speed, including a data table. | ||
| View original record | contd :- -8- oil pressure, this factor becomes of signifinance where previously it could be neglected. Amongst other things the initial ignition advance is delayed as the load does not start to lift… | ||
| scan0130 | Sending two blueprints of a Piston Ring for an experiment on the 40/50HP Chassis Ignition Governor. | ||
| View original record | c. to Hs/Rm. X8685 BY/SSL/DB.17.2.26. Re 40/50HP Chassis - Ignition Governor. Sec:5120. Oil Relay Piston. As per Mr Robotham's request, please receive herewith two blueprints of - E.74722 - Piston… | ||
| scan0131 | Engineering drawing for a hammered piston ring for a relay piston. | ||
| View original record | Piston Grooves to be machined to 2.315 Dia. RING TO BE MADE SO THAT A TANGENTIAL LOAD OF 5 TO 6 LBS IS REQUIRED TO CLOSE RING TO SPECIFIED DIMENSION RADIAL LOAD = 130 TO 156LBS. IT IS IMPORTANT THAT… | ||
| scan0132 | Using models of pointers and quadrants to establish a standard for setting controls on bodied cars. | ||
| View original record | 48685 To Mr. Sinclare T.D. from Hs/Rm. Hs/Rm1/LG18.2.26. With reference to the difficulty experienced in setting controls on bodied cars. We attach models of pointers and quadrants which enable the… | ||
| scan0133 | Experiments and suggestions for the Phantom Automatic Ignition Advance system. | ||
| View original record | X8685 To Hs. & E. from R. c. CJ. BJ. RG. Wor. Da. By. PHANTOM AUTOMATIC IGNITION ADVANCE. X.8685 X.8790. Experiments being made at Derby shew insufficient margin of power on the relay hydraulic motor.… | ||
| scan0134 | Comparison of two alternative springs for a 40/50HP chassis ignition governor, detailing load and stress. | ||
| View original record | X8685 To Hs/Rm. BY/SS7/DB.12.3.26. Re 40/50HP Chassis - Ignition Governor Sec:5120. We give below the two alternative springs we instructed for the above. E.73203 has always been fitted and represents… | ||
| scan0135 | The Phantom automatic ignition advance, discussing friction and noise in the magneto. | ||
| View original record | Expl. Report. X. 8685. ✓ EFC2/T13.3.26. + To R.)from EFC. " E.) c. to CJ. BJ. RG. c. to Wor. Da. By. PHANTOM AUTOMATIC IGNITION ADVANCE. V8790 (Ref. R2/M10.3.26). The friction in the advance and… | ||
| scan0136 | Continued page discussing the causes and solutions for noise originating from magneto sleeves and control linkages. | ||
| View original record | Contd. -2- noise from the control linkages themselves when these are new and in "just easy" adjustment, but the bigger complaint of noise is from the magneto itself due to the "flopping of the… | ||
| scan0137 | The testing and development of a Lucas magneto, including noise levels and proposed modifications. | ||
| View original record | Contd. -3- EFC2/T13.3.26. As previously reported, we have already experimented with a Lucas magneto in which the necessary range has been obtained without the use of a sleeve. We referred to the… | ||
| scan0138 | Progress report on machine modifications and chassis tests, specifically concerning Lucas magnetos. | ||
| View original record | Contd. -4- EFC2/T13.3.26. of these modifications is to make the machine finally completely satisfactory to our requirements, and there seems good reason to suppose that such machines will be thus… | ||
| scan0139 | Diagram of timing for a Watford E06 Sleeve Magneto No 73972 and its distributor. | ||
| View original record | MA = MAKE ADVANCE = 87° MR = MAKE RETARD = -25° X8695 B.A = BREAK ADVANCE = 64° B.R = BREAK RETARD = 125° B.R. B.A. FLUX AXIS. RETARDED FLUX AXIS ADVANCED S/L M.R M.A. A R 103° 86° 65° 22° 22° 41°… | ||
| scan0140 | Improvements to the magneto and relay motor for the Phantom Auto: Advance system. | ||
| View original record | ORIGINAL TO HS. BY.) FROM R. M. EFC.) (Le Canadel.) Copy to CJ. BJ. WOB. X8685 R5/M30.3.26. Delivered to WW. during the Easter holiday. PHANTOM AUTO: ADVANCE. X8685 X8796 In addition to my recent… | ||
| scan0141 | Merits of Watford magnetos and modifications to the Phantom automatic advance mechanism. | ||
| View original record | X8685 To Hs. EFC )FROM R E. EY. )(LeCanadel) c. to - CJ. BJ. RL/M27.3.26. Rec'd at WW. evening of 31.3.26. PHANTOM AUTOMATIC ADVANCE. X.8685. X.8796. Regarding Watford magnetos I feel we ought to be… | ||
| scan0142 | Continued memorandum discussing servo motor performance in relation to oil pressure and the governor. | ||
| View original record | Contd. -2- R1/W27.3.26. I find from Hs/RM that we already arrange that the servo motor gives an advance as soon as the oil pressure is sufficiently independent of the governor; this should take care… | ||
| scan0143 | Magneto's automatic advance mechanism on a Phantom model. | ||
| View original record | To Hs. By.)from R. E. EFC)(Le Canadel) c. to CJ. BJ. Wor. X 8685 R5/M30.3.36 PHANTOM AUTO: ADVANCE. X.8685. X.8796. In addition to my recent memo. it appears manifest that if the magneto has a… | ||
| scan0144 | Requesting modifications for an ignition governor oil relay to complete experiments. | ||
| View original record | To RHC. from Hs/Rm. X8685 Hs/Rm1/LG7.4.26. SKETCH. IGNITION GOVERNOR OIL RELAY. We are anxious to complete a number of experiments on this detail. We have previously requested you to let us have some… | ||
| scan0145 | Altered blueprints for the 40/50HP Chassis Ignition Governor, specifically lengthening the relay cylinder. | ||
| View original record | To Hs/Rm. X8685 BY/SS5/DB.12.4.26. Re 40/50HP Chassis - Ignition Governor. Sec:5120. Please receive herewith altered blueprints - E.74836 - Crosshead. E.74837 - Relay Cylinder in accordance with your… | ||
| scan0146 | Confirming the dispatch of blueprints for springs related to the 40/50HP Chassis ignition governor and controls. | ||
| View original record | To Hs/Rm. X8685 BY/SS4/DB.14.4.26. Re 40/50HP Chassis - Ignition Governor. Sec:5120. Controls. Sec:5240. As per your request, please receive herewith two blueprints of - E.74838 - Spring. Sec:5120.… | ||
| scan0147 | Outlining a proposed scheme for the Phantom Relay Advance system, complete with a performance graph. | ||
| View original record | TO E. HS. FROM R. BY: EFC.) (Le Canadel.) C. to BJ. WOR. DA. RG. Handwritten: X8685 R1/M18.4.26. Rec'd at WW. evening of 21.4.26. PHANTOM RELAY ADVANCE. Handwritten: X8685 (crossed out) Handwritten:… | ||
| scan0148 | Modifications for the Ignition Governor on a 40/50HP Chassis. | ||
| View original record | COPY 48685 c. to Hs/Rm. BY/SS8/DB.26.4.26. Re 40/50HP Chassis - Ignition Governor. Sec:5120. In reply to your BY10/H.20.4.26, the modifications required by the Exptl:Dept: in connection with the… | ||
| scan0149 | Accompanying two blueprints for 40/50HP Chassis Ignition Governor parts. | ||
| View original record | c. to Hs/Rm. X8685 BY/SS6/DB.30.4.26. Re 40/50HP Chassis - Ignition Governor. Sec:5120. In accordance with memo Hs/Rm/LG.20.4.26, please receive herewith two blueprints of - E.74836 - Crosshead.… | ||
| scan0150 | Modifications to the 40/50 HP chassis ignition governor, considering cost and implementation timing. | ||
| View original record | X8685 BY/SS. (SS is struck through) c. Hs. BY9/H. 3.5.26. 40/50 HP. CHASSIS.IGNITION GOVERNOR. I think in view of the large number of parts finished, and the cost of same, for A.2. Series, it will be… | ||
| scan0151 | Phantom's automatic advance mechanism, including magneto noise, relay pistons, and governor settings. | ||
| View original record | To Hs/RM. } from R. EFC c. to BJ Wor. By. X8685 RM/M4.5.26. PHANTOM AUTO. ADVANCE. X.8685. X.3949. (A) Referring to your memo of 23.4.26. I understand the noise is caused by the swing of the magneto… | ||
| scan0152 | Continued discussion on governor mechanism inefficiency with a suggested modification to the governor springing. | ||
| View original record | Contd. -2- coming to zero with a governor starting to open at 250 revs. equalling 500 crankshaft speed. We think there should be an initial advance of anything up to crankshaft 30 to be sure that the… | ||
| scan0153 | Continued discussion on improvements to the relay piston, governor weights and spring arrangements. | ||
| View original record | Contd. -3- RL/M4.5.26. Relay centre piston is better light but its gravity could be used if not exceeding 250 governor revs. The governor weights we should like heavier (but lead is too plastic) and… | ||
| scan0154 | Notes and a graph analyzing engine timing advance characteristics against engine revolutions. | ||
| View original record | -4- Max. for full power. Minimum. Gov. wide open full advance motor piston at top of its 1/2" stroke. Feeble spring no initial set so that from 500 to 1500 rate of advance very great. Governor… | ||
| scan0155 | Concluding remarks on engine control system improvements, focusing on governors, springs, and hydraulic cylinders. | ||
| View original record | Contd. -5- RL/W4.5.26. CONCLUDING REMARKS. Controls ought to be casehardened and fitted up and maintained with the minimum slack possible. (1) Improvement to hydraulic cylinder } (2) " collar… | ||
| scan0156 | New return spring for the 40/50HP Chassis Ignition Governor. | ||
| View original record | To Misc. c. to Hs/Rm. X8685 BY/SS3/DB.13.5.26. Re 40/50HP Chassis - Ignition Governor. Sec:5120. In accordance with Mr Royce's request for a return spring giving 6 lbs. in retard position and 9 lbs.… | ||
| scan0157 | Issue with an oil relay lever fouling a piston and subsequent adjustments. | ||
| View original record | To BY. from Hs/Rm. c. to BY/SS. x8685 Hs/Rm2/LG14.5.26. OIL RELAY. We understand that the Works have been bending the relay lever to prevent this fouling the top of the large piston. As far as we can… | ||
| scan0158 | Modifications to ignition timing and components to resolve a production issue. | ||
| View original record | contd :- -2- We suggest that to overcome the production trouble, the ignition advance is cut off at 20° angular movement of lever E.72518. This can most easily be accomplished by lengthening cap… | ||
| scan0159 | Alterations required for the ignition governor for the 12-EX engine. | ||
| View original record | To RHC. from Hs/Rm. 78685 Hs/Rml/LG14.5.26. IGNITION GOVERNOR. With reference to the ignition governor for 12-EX. This will now require altering in accordance with Rl/M4.5.26. (1) The small torsion… | ||
| scan0160 | Extract detailing improvements to the Phantom's auto advance system, including new timing instructions and piston modifications. | ||
| View original record | Extract :- X8685 R3/M14.5.26. PHANTOM AUTO. ADVANCE. X.8685. Certain improvements to the auto.advance have been made. The timing instructions should be given in the book to set and synchronise in well… | ||
| scan0161 | Alterations required for the ignition governor for the 12-EX engine. | ||
| View original record | HS. COPY. X8G85 To RHC. from HS/Rm. Hs/Rml/LG14.5.26. IGNITION GOVERNOR. With reference to the ignition governor for 12-EX. This will now require altering in accordance with RL/M4.5.26. (1) The small… | ||
| scan0162 | Updates and issues with the Phantom's automatic ignition advance system, referencing drawings and test results. | ||
| View original record | To EY. from E. c. to BJ Hs. Hs/RM. X8685 E1/M17.5.26. PHANTOM AUTOMATIC IGNITION ADVANCE. X.8685. X.3949. We send you herewith drawings LeCs. 2242. and 2244., dealing with the above. The former shews… | ||
| scan0163 | Note detailing ignition advance mechanisms and proposed modifications for the Phantom model's ignition system. | ||
| View original record | -2- Contd. It is intended that the differential mechanism regulating the hand advance should be left unaltered. We realise this will not allow us to obtain a full 30° governor advance on the flywheel… | ||
| scan0164 | Extract detailing suggested modifications to the ignition system for Phantom Chassis models X.8770, X.8685 and X.8680. | ||
| View original record | X8685 To Hs. Extract from R3/M18.5.26. RE PHANTOM CHASSIS. X.8770. X.8685. X.8680. Regarding ignition we have suggested one or two little modifications to the ignition relay which could be tried, and… | ||
| scan0165 | Requesting a spare Battery Ignition Tower for EFC. | ||
| View original record | X8685 To RHC/JC. from Hs/Rm. Hs/Rm/LG27.5.26. Will you please let EFC. have a Battery Ignition Tower complete with Governor but minus Relay Chamber and Pistons. I believe H. Smith has one spare which… | ||
| scan0166 | Requesting a fitter to be sent to the Experimental Electrical Lab for a Phantom ignition tower governor test. | ||
| View original record | X8685 To RHC. from EFC. EFCl/T5.6.26. X.8685. PHANTOM IGNITION TOWER FOR GOVERNOR TEST. Would you please send a fitter to the Expl. Elec. Lab. to fit this to bracket and arrange pulley for drive. EFC. | ||
| scan0167 | From R. to H.S. regarding improvements to the automatic advance mechanism. | ||
| View original record | 7685 To Hs from R. c. to BJ. c. to Wor. c. to Hy. R7/M10.6.26. EAC.8. AUTO: ADVANCE. X.7685. Regarding the auto. advance, I was very pleased to see that this was greatly improved both in timing and in… | ||
| scan0168 | The fitting of a Phantom ignition tower for a governor test. | ||
| View original record | X8685 To FHC. from EFE. EFC10/T10.6.26. PHANTOM IGNITION TOWER FOR GOVERNOR TEST May I remind you that we are awaiting a fitter to arrange the fitting of the above to our bracket and also to arrange… | ||
| scan0169 | Ignition controls, advance curves, and associated drawings LeC's 2262 and 2265. | ||
| View original record | To EY. from E. c. to BJ. Hs. EFC. X7685 E2/M3.7.26. EAC.7 IGNITION CONTROLS AND ADVANCE CURVES. X.7685. We send you herewith drawings LeC's 2262 and 2265, dealing with the above. The former drawing is… | ||
| scan0170 | Scheme for carburettor mixture control and revisions to ignition controls. | ||
| View original record | 48685 To BY. FROM E. C. to BY. HS. E2/M6.7.26. EAC.7. CARBURETTER MIXTURE CONTROL. -X.7080. X7240 We send you herewith drawing LeC. 2266. giving a scheme for the mixture control to suit LeC.2262. The… | ||
| scan0171 | Preliminary tests and modifications on a new type of oil relay. | ||
| View original record | To R. from Hs/Rm. c. to BJ. Wor. c. to RG. E. c. to DA. BY. X8685 Hs/RmL/LG19.7.26. OIL RELAY. We have carried out some preliminary tests on the new type of oil relay with the altered piston rings,… | ||
| scan0172 | Test drive report for car 12-EX, detailing performance observations and suggestions for improvement. | ||
| View original record | X7685 To Hs. from R. c. to BJ. c. to Wor. c. to By. RL/M22.7.26. 12-EX. X.7940. X.7430. X.634. X.7685. I drove 12-EX to London, and thought, while the steering was extremely light and easy, it may be… | ||
| scan0173 | Urgently requesting details on modifications and parts for steering, aero, and oil relay systems. | ||
| View original record | To RHC. from Hs/Rm. XP685 X8430 Hs/Rm3/LG9. 8. 26. We are urgently requiring the following details and should be obliged if you could expedite them as far as possible. STEERING. Modified cross… | ||
| scan0174 | Chassis 12-EX after a 6000-mile test, detailing the performance of the magneto, battery ignition, and ignition governor. | ||
| View original record | X7685 Extract from GWH/RP19.8.26. REPORT ON CHASSIS 12-EX. EAC.VIII. AFTER 6000 MILES Magneto & Drive. X.8793. X.7940. Lucas magneto EF6-51A. Modified Hardy fabric coupling to E.74906 to L.O.P.… | ||
| scan0175 | Ignition governor differences between 7-EX and 12-EX models, with a request for adjustments based on test readings. | ||
| View original record | To RHC. from Hs/Rm. x8685 Hs/Rm/LG24. 9.26. IGNITION GOVERNOR. X 8685 X7685 We find that the relay which we have just been testing for 7-EX is very different from that which we have previously fitted… | ||
| scan0176 | Explanation of an oil relay governor ignition system, its inception, and its advantages in preventing engine detonation. | ||
| View original record | To Hm. X8685 29.9.26 Hs/Rm/LGXXXXX25. R-R OIL RELAY GOVERNOR IGNITION. EXPLANATION OF INCEPTION AND ADVANTAGES. The phenomenon of detonation is one that has recently received considerable attention… | ||
| scan0177 | Engine detonation theory, particularly the impact of engine size and the use of dual ignition systems. | ||
| View original record | contd :- -2- Hs/Rm/LG29.9.26 ------------------ the tendency to detonate is largely proportional to the distance from the sparking plug to the remotest point on the surface of the combustion chamber.… | ||
| scan0178 | The advantages of a linked ignition system with a light governor and oil relay to prevent detonation. | ||
| View original record | contd :- -3- Hs/Rm/LG29.9.26 ----------------- Two separate governors would be exceedingly difficult to synchronise initially, and in addition could never be expected to maintain this synchronisation… | ||
| scan0179 | Procedure for setting ignition timing and troubleshooting potential issues. | ||
| View original record | contd :- -4- Hs/Rm/LG29.9.26. from 2-point ignition in large cylinders are :- (a) Ability to fire weak mixtures consistently. (b) Improved slow running. IGNITION SETTINGS. The setting of the ignition… | ||
| scan0180 | Instructions for setting the magneto timing, detailing adjustments for retard and advance positions. | ||
| View original record | contd :- -5- Hs/Rm/LG29.9.26 --------------- Having set the battery ignition, the magneto sleeve should be moved round to the fully retard position, and the magneto timed by means of the serrated… | ||
| scan0181 | Procedure for checking and adjusting the engine ignition advance mechanism and associated linkage. | ||
| View original record | contd :- -6- Hs/Rm/LG29.9.26 ----------- hand quadrant it remains to ascertain that the controls allow the full 27° automatic advance from the oil relay. This can be accomplished by pushing the end of… | ||
| scan0182 | Instructions for adjusting linkage movement and troubleshooting the oil relay system, including piston removal. | ||
| View original record | contd :- -7- Hs/Rm/LG29.9.26 the movement of the linkage should be reduced by lowering Cap E.72495 and reducing the thickness of its packing washer. It is very important that the limit of the movement… | ||
| scan0183 | Fitting instructions and troubleshooting guide for the oil relay assembly and cup leather. | ||
| View original record | contd :- -8- CUP LEATHER FITTING. When the new cup leather is fitted E.72502 it should be a very easy fit in the bore of the chamber E.72376. When assembled the piston E.72509 should just slide down… | ||
| scan0184 | Page describing the characteristics of the ignition advance hand control at different speeds. | ||
| View original record | contd :- -9- On the road, the characteristics of the ignition advance is such that full advance of the hand control should be used at low speeds. This will give full power and a smooth pick-up. At… | ||
| scan0185 | Technical information memo concerning the R-R Oil Relay Governor Ignition. | ||
| View original record | To Hm. from Hs/Rm. X8685 Hs/Rm3/LG5.10.26. TECHNICAL INFORMATION. R-R OIL RELAY GOVERNOR IGNITION. Herewith information as to the object of the Oil Relay and some details in connection with the… | ||
| scan0186 | Standardisation of an ignition governor oil relay piston using metal packing rings. | ||
| View original record | RR 755 REVISED (10H) (DE444 6-10-26) BM. COMPLETED 20.10.26 STANDARDISATION of CHASSIS PARTS. Description of Parts. IGNITION GOVERNOR OIL RELAY PISTON USING METAL PACKING RINGS. Origin. To obtain more… | ||
| scan0187 | Tests of a new ignition oil relay with metal piston rings and proposed ignition advance curves. | ||
| View original record | To R. from Hs/Rm. c. to BJ. Wor. c. to E. DA. c. to BY. X7685 Hs/Rml/LG9.12.26‡ IGNITION OIL RELAY. We have now completed a number of tests on the new relay with metal piston rings and longer travel… | ||
| scan0188 | Adjustments to a piston and spring assembly for controlling initial advance, including a technical diagram. | ||
| View original record | contd :- -2- COLLAR Normally, if the inner piston is set flush with the top of the large piston, 6º initial advance is obtained. As this is more than is required, we have arranged a small collar in… | ||
| scan0189 | Graph showing Ignition Advance on the flywheel versus RPM for an Oil Relay system. | ||
| View original record | OIL RELAY IGNITION ADV. FLYWHEEL 50 40 30 20 10 7EX. 10EX. 100% POWER 1000 2000 R.P.M. | ||
| scan0190 | Fitting instructions and modifications for a metal piston relay, including a diagram for a new collar. | ||
| View original record | To BY: from Hs/Ra. c.c to Sft. c. to Hbx. X7685 Hs/Rm6/LG30.12.26. METAL PISTON RELAY TO LeC.2242. There are several points to notice in bringing the new relay into production. The metal piston rings… | ||
| scan0191 | Instructions for modifying a governor with new springs, loads, and engine timing adjustments. | ||
| View original record | contd :- -2- E.74990 to be cut off after moving through 24°. The governor weights should be fitted with the modified form of springing to which gives only half the angular spring deflection. The… | ||
| scan0192 | Blueprint graph of an ignition advance curve with a diagram of an oil relay. | ||
| View original record | OIL RELAY MOVEMENT IGNITION ADVANCE CURVE SPRING E. 75071 THIS CURVE SHOULD BE HELD TO ±1.5° MODIFIED FORM OF SPRINGING. I.E. HALF MOVEMENT OF SPRING. ANGULAR MOVEMENT LEVER A. ENGINE R.P.M. GOVERNOR… | ||
| scan0193 | Experiments to improve the performance and reduce noise of a Phantom Ignition Governor Relay. | ||
| View original record | To R. From Hs/Rm. c. to DJ. E. c. to [redacted] c. to [redacted] c. to EFC. X8685 Hs/Rm2/LG23.4.26. PHANTOM IGNITION GOVERNOR RELAY. X8685 X8796 Since leaving Le Canadel we have been working… | ||
| scan0194 | Ignition advance relay piston performance and issues with retardation. | ||
| View original record | contd :- -2- combination of leather and ring for the realy. We find that the most efficient piston requires a load of 6 lbs. to retard it and the controls and distributor (mag. disconnected) when the… | ||
| scan0195 | Page discussing engine ignition advance modifications and material testing, including a performance graph. | ||
| View original record | contd :- -3- GRAPH I 1804 MADE AT CROXLEY Ignition Advance Flywheel ° ENGINE R.P.M. DELAYED LOW SPEED ADVANCE DUE TO GOVERNOR WTS BEING UNABLE TO LIFT SMALL INNER PISTON (OIL VISCOSITY ADDITIONAL WHEN… | ||
| scan0196 | List of alterations to the governor and relay piston for a 10,000-mile test on the 12-EX, with a corresponding ignition advance curve graph. | ||
| View original record | contd :- -4- have fitted up on 12-EX for the next 10,000 miles test has the following alterations. (1) Aluminium governor weights. Half the mass of the original steel weights. (2) Duralumin small… | ||
| scan0197 | Disadvantages of light governor weights and recommending stronger control springs. | ||
| View original record | contd :- -5- The disadvantage of using light governor weights is the fact that they suffer when the oil is cold and the viscosity affects the small inner piston. We should prefer using stronger xxxxx… | ||
| scan0198 | Feedback on a new trials car and proposed improvements for the 20 HP model, focusing on parts stock management and electrical upgrades. | ||
| View original record | X7680 To EY ) HS )FROM R. EFC)(at Le Canadel) R5/M1.2.27. DESPATCHED FROM WW. 4.2.27. c. to BJ. WOR. PN. CWB. H. PHANTOM & 20 HP. X.2894. X.5680. X.7680. Mr. Hanbury's expressions of satisfaction with… | ||
| scan0199 | Benefits and historical issues with the Phantom ignition auto-advance system. | ||
| View original record | To BJ. from R. c.c. to OY. Hs. c.c. to PN. EFC. c.c. to CWB.HM. X8685 R2/M2.5.27. PHANTOM IGNITION AUTO-ADVANCE. This engine if properly fitted up will bear a higher compression than other engines… | ||
| scan0200 | Adjustments to the ignition advance curves for an aluminium engine fitted with a turbulent head. | ||
| View original record | To R. from Hs/Rm. c. to BJ. WOr. c. to RG. E. c. to DA. BY. X7685 Hs/Rm2/LG6.5.27. EAC. 7. - IGNITION ADVANCE CURVES. X3949. As we have now got the ignition advance requirements of the aluminium… | ||
| scan0201 | Blueprint graph comparing ignition advance curves for a Lighter Phantom engine, showing present, required and proposed curves. | ||
| View original record | IGNITION ADVANCE FOR LIGHTER PHANTOM TO LEC 2230 (BOTH IGNITIONS BEING SYNCHRONISED) Top Chart (A): DEGREES ADVANCE ON FLYWHEEL PRESENT COMPROMISE REQ'D CURVE 13° M&B 1° M M 1° 13° B M 1° B 23° Bottom… | ||
| scan0202 | Requesting an update on action to be taken regarding a loose nut on the Phantom's Oil Relay Filter causing engine seizure. | ||
| View original record | Hs. from Hm. BY. X8685 Hm11/D17.5.27. Re Oil Relay Filter. - Phantom. Some little time ago we had occasion to bring to your notice a case where the milled nut at the bottom of the Oil Relay Cylinder… | ||
| scan0203 | Phantom ignition control lever seizing due to lack of lubrication and proposed solutions. | ||
| View original record | 78685 Hs/AJL/LG31.5.27. Y8685 Y8100 PHANTOM IGNITION CONTROLS. We have recently had two cases of the magneto control countershaft lever seizing up on its pin owing to lack of lubrication. The effect… | ||
| scan0204 | The fitting of a Phantom ignition governor set to vehicle 10-EX. | ||
| View original record | To RHC. from Hs/Rn. c. to BY/SS. X8685 Hs/Rm3/LG1.6.27. PHANTOM - IGNITION GOVERNOR. With reference to BY/CS3/DB1.6.27. Will you please fit a set to 10-EX as soon as it is available. Hs/Rn. | ||
| scan0205 | Prints and stock parts for a Phantom Ignition Governor experiment. | ||
| View original record | To NHC. c. to Hs. X8685 BY/CS3/DB.1.6.27. Re Phantom - Ignition Governor - Sec:5120. Please receive herewith prints off each of the following, detailed from Scheme 927 Fig:2:- Scheme 927 - Locking… | ||
| scan0206 | New experimental locking scheme for the milled nut on the Phantom oil relay filter. | ||
| View original record | Hse c. to Hs. X8685 BY/Cgh12/G.3.6.27. PHANTOM OIL RELAY FILTER. --------------------- With reference to Hm11/D.17.5.27. we have now arranged a locking scheme for the milled nut at the bottom of the… | ||
| scan0207 | Rejected proposal for a locking device and a proposed change to the ignition relay/governor. | ||
| View original record | E. Dept C. Hs. H685 BYLL/G.11.11.27. re CARBURETTER AND IGNITION GOVERNOR.LOCKING DEVICE. The proposal to embody the locking device on both of the above features has been definitely turned down by Mr.… | ||
| scan0208 | Test report on leakage load for leather and brass ignition relay pistons. | ||
| View original record | Y8685 28.1.28. IGNITION RELAY PISTONS. Leakage load. Leather piston to LeC.2242 (with light piston ring). Piston failed to rise at 96 lbs. with 15 lbs/sq.in. oil pressure. xxx 121 1/2 " " 20 " " " "… | ||
| scan0209 | Request to detail a new spring for the oil relay on the Continental Phantom engine. | ||
| View original record | To BY. from Hs/Rm. 48685 Hs/Rm5/LG7.2.28. We are going to alter the characteristics of the oil relay for the Continental Phantom engine. In order to do this we find that we require a spring half way… | ||
| scan0210 | Distributing two prints of a Governor Spring for an Ignition Governor experiment. | ||
| View original record | c. to Hs/Rm. X8685 BY/CS3/DB.10.2.28. Re EAC.14. - Ignition Governor - Sec:5120. Please receive herewith two prints of - E.77228 - Governor Spring details in accordance with memo Hs/Rm5/LG. 7.2.28.… | ||
| scan0211 | Request from the American office for a plotted curve showing the altered ignition advance characteristic for an aluminum head. | ||
| View original record | X8685 Hs Na2B8428 August 4th, 1928. Mr. Basil Johnson, ROLLS-ROYCE LTD., 14-15 Conduit St. London W-1, ENGLAND. Att. Mr. Nives Derby Dear Sir, Whilst I was at Derby, either yourself or Mr. Robotham… | ||
| scan0212 | Investigation into the cause of a seizing dynamo drive pinion bush on an 'SS' engine, detailing an experimental lubrication fix. | ||
| View original record | To R. from Hs/ACL. c. to BJ. Wor. c. to E. DA. c. to BY. x7685 hs/ACL1/LG30.8.28. 'SS' ENGINE. x7100 We have made further investigation of the cause of the seizing of the dynamo drive pinion bush by… | ||
| scan0213 | Engine testing, detailing oiling issues, modifications to drain grooves, and notes on future tests. | ||
| View original record | contd :- -2- .We have not so far experienced trouble with any of the other bearings in the gearcase. Trouble has been experienced with oil building up in the oil chamber of the ignition tower and… | ||
| scan0214 | Modification to the oil drain slots in the governor housing of an S.S. Engine. | ||
| View original record | THESE SLOTS INCREASED FROM 6 SLOTS .125 WIDE To 12 SLOTS .250 WIDE BY .075 DEEP Oil Drain Slots In Governor Housing Of S.S. Engine ael& 30/8/38 | ||
| scan0215 | Blueprint detailing an experimental drain trough for an 'S.S' dynamo drive to feed oil to a bush. | ||
| View original record | OIL IS THROWN FROM THIS EDGE OF GEARS EXPL. DRAIN TROUGH 'S.S.' DYNAMO DRIVE SHEWING EXPL. DRAIN TROUGH TO FEED OIL TO BUSH ael/ 30/8/38 | ||
| scan0216 | Technical memorandum detailing the specifications for magneto and battery ignition timing and control angles. | ||
| View original record | EFC. )from R. Hs. } By. C. to BJ. WOR. X7680 R1/M19.9.28. EAC.10 IGNITION. X.7680. X.928. X.8680. X.3949 To get uniform angles in the controls we want to get the magneto range angle increased from 58°… | ||
| scan0217 | Comparison table of present and proposed ignition timing settings for a Phantom engine. | ||
| View original record | 27.9.28. PHANTOM IGNITION TIMING. Present. RL/M19.9.28. Battery hand range. 30° 30° Magneto hand range. 8° 15° Auto range. 28° to 30° 25° Full battery retard. 10° A.T.C. 10° Full magneto retard. 12°… | ||
| scan0218 | Cover letter for an attached table and blueprint concerning Phantom ignition timing. | ||
| View original record | To EY. from EFC. X7680 EFCL/T28.9.28. X928 X 86-80 Please find attached copy of the table which we showed to you the other day dealing with the Phantom ignition timing, containing both the present and… | ||
| scan0219 | Drawing and comparing ignition timing diagrams for the Phantom engine, specifically the magneto and battery advance curves. | ||
| View original record | X7680 To R. from EFC. c. BJ. E. BY. EFC/T2.10.28. PHANTOM IGNITION TIMING. X7680 8680 We have drawn out for convenience of reference an ignition timing diagram, based upon your RL/M19.9.28, of which… | ||
| scan0220 | Page 2 of a memo regarding the range of machines and a suggested alteration. | ||
| View original record | EFC/T2.10.28. -2- Contd. retarded position. Also the range of machines as received is usually so near 60° (within a degree) as scarcely to require the alteration suggested. EFC. | ||
| scan0221 | Ignition timing diagram for the F.A.C. 10 engine, showing degrees of advance. | ||
| View original record | DEGREES OF ADVANCE ON ENGINE -20 -10 0 10 20 30 40 50 HAND ADV. BATTERY IGNITION 30° HAND ADV. MAGNETO 15° FULL BATTERY RETARD 0° FULL MAG RETARD 5° SYNCHRONIZATION OCCURS AT MIDDLE OF TRAVEL IGNITION… | ||
| scan0222 | Comparison table of present and revised ignition timing settings for the Phantom engine. | ||
| View original record | X7685 27.9.28. PHANTOM IGNITION TIMING. Present. R1/L19.9.28. Battery hand range. 30° 30° Magneto hand range. 8° 15° Auto range. 28° to 30° 25° Full battery retard. 10° A.T.C. 10° Full magneto retard.… | ||
| scan0223 | Engine control drawings, covering the governor control, magneto, and ignition synchronising mechanism. | ||
| View original record | BY. from E. c. to BJ. Hs. 47685 E1/M20.10.28. EAC.10. ENGINE CONTROLS. X.7240 X.7140 X.7685 We send herewith LeCs. 2602/5. You have already had a blueprint of the former drawing. We shew this now… | ||
| scan0224 | Cover memo regarding an attached drawing for Magneto and Throttle Governor Controls. | ||
| View original record | X7685 BY. from E. c. to BJ. Hs. E1/M25.10.28. MAGNETO AND THROTTLE GOVERNOR CONTROLS. X. 7140 X. 7685 X. 7240 Please find attached drg. LeC.2606 shewing the above. E. | ||
| scan0225 | Steering, engine, and chassis issues for a new car, with suggestions for improvements, possibly for the Phantom II. | ||
| View original record | Hs. from R. c. to Sg. Wor. OY. c. to Mr. Fuller Ry. PN. WP. C. DA. E. X7680 SECRET. R2/M28.6.29. SS. (OR NEW NAME SUCH AS PHANTOM 2. X7770 X7680. x080 The impression of variation in steering is… | ||
| scan0226 | Engine specifications including timing, power curve data, compression ratio, and clearance volume. | ||
| View original record | To EP. from Hs/Gy. X7680 Hs/Gyl/MJ.11.7.29. Re. S.S. X1440 X7680 X 490 X 381 (1) Std. Valve Timing. We attach print V.527, Standard Valve Timing. (2) Std. Ignition Timing. This is 12° before T.D.C.… | ||
| scan0227 | Recommending an optimal ignition timing of 12 degrees before top dead centre to reduce detonation. | ||
| View original record | To By. from Hs/ACL. C. to E. Mx. C. to EP XY680. HS/ACL2/MJ.15.7.29. XY680. XY440 S.S. IGNITION TIMING. As the result of tests carried out, we find the most suitable ignition timing for the above… | ||
| scan0228 | Graph showing power variation with ignition timing for S.S. Engines on Engine No S.S.5. | ||
| View original record | V690 POWER VARIATION WITH IGNITION TIMING. (S.S. ENGINES) TESTS RUN ON ENGINE No S.S.5. COMPLETE TEST BED EXHAUST SYSTEM, (WITH CAR TYPE SILENCER & FISHTAIL) BAROMETER = 760 M/M. INTAKE = 15°C BRAKE… | ||
| scan0229 | Complaints of the battery ignition distributor rotor working loose and rubbing against the collector pins. | ||
| View original record | X.7680. By/RD. from EFC. EFC6/AD27.9.29. BATTERY IGNITION DISTRIBUTOR ROTOR. EP. has made complaints of this rotor working loose on the cone on cars on test, the periphery of the rotor blade actually… | ||
| scan0230 | Testing of specially hardened distributor cams using the 'cloud-burst' process. | ||
| View original record | EFC Will you please arrange to have these fitted. HS X7680 BY/EM7/J.26.10.29. DISTRIBUTOR CAMS - D.50710. We are handing to you herewith six of the above distributor cams, which have been specially… | ||
| scan0231 | Testing of specially hardened ignition distributor cams using the 'Cloudburst' process. | ||
| View original record | RHC. from EFC. c. Hs/AJL. X.7680. EFC5/AD30.10.29. IGNITION DISTRIBUTOR CAMS SPECIALLY HARDENED BY "CLOUDBURST" PROCESS Herewith we hand to you four ignition distributor cams which have been specially… | ||
| scan0232 | Detonation issues and recommended ignition timing adjustments for the Phantom II model. | ||
| View original record | COPY. X7680. To Ry. from Hs/AJL. c. Wor. c. E. c. Mx. EP. Hs/AJL6/AD6.11.29. X7680. PHANTOM II IGNITION SETTING AND DETONATIONS. The present ignition timing on Phantom II is 12° B.T.D.C. when the… | ||
| scan0233 | Requesting a special battery ignition cam for 23-EX be hardened by the 'cloudburst' process. | ||
| View original record | X-7680 RHC. from EFC. c. Hs/GWH. EFC4/AD28.1.30. X.7680. BATTERY IGNITION CAM FOR 23-EX. Will you please arrange for this to be one of the special cams handed to you, hardened by "cloudburst" process.… | ||
| scan0234 | H.T. rotor failures during endurance tests and a recommendation to increase insulation thickness due to higher compression ratios. | ||
| View original record | X7680 By. from EFC. EFC9/AD20.5.30 X.5680. X.7680. BATTERY IGNITION DISTRIBUTOR ROTORS. In connection with the above my assistant's report WE.22, reads as follows :- "In connection with bench… | ||
| scan0235 | Request to remove the 'Cloudburst' hardened contact breaker cam from 23-EX for examination. | ||
| View original record | X7680 RHC. from EFC/HEW. c. Hs/AJL. EFC/HEW2/AD7.6.30. X.7680.. "CLOUDBURST" HARDENED CAM. Will you please have the contact breaker cam on 23-EX removed and handed to us for examination. A standard… | ||
| scan0236 | Statement clarifying the standard ignition timing for the Phantom II vehicle. | ||
| View original record | X7680 By/CS. from EFC. c. Hs/AJL. EFC3/AD16.7.30. X,7680. PHANTOM II IGNITION TIMING. A complete statement of the Phantom II ignition timing should now be as follows. This, as regards setting is in… | ||
| scan0237 | List of ignition timing settings in degrees for the Phantom II model. | ||
| View original record | 16.7.30. PHANTOM II IGNITION TIMING. Degrees reckoned on engine flywheel. Battery hand range 30° Magneto " " 15° Automatic range 25° Full battery retard. 18° A.T.C. " magneto " 8° A.T.C. " battery… | ||
| scan0238 | Request to remove 'cloudburst' cams from experimental cars 23-EX, 19-EX, and 22-EX for examination. | ||
| View original record | X7680 RHC. from EFC. c. Hs/AJL. EFC1/AD15.8.30. X.7680. CLOUDBURST CAMS. May we have as soon as possible the "cloudburst" cam removed from 23-EX as requested in our EFC2/AD7.6.30. Will you please also… | ||
| scan0239 | Inquiry regarding seizure of the battery ignition contact breaker lever on its pivot. | ||
| View original record | X7680 Hd. from EFC. c. N. EFC1/AD18.9.30. X.5680 X.7680. SEIZURE OF BATTERY IGNITION CONTACT BREAKER LEVER ON ITS PIVOT. We should like to know if you have experienced any cases of seizure of the… | ||
| scan0240 | The seizure of the battery ignition contact breaker lever on its pivot due to lack of lubrication. | ||
| View original record | X7680 EFC. C. to N. Hd/WW6/KW19.9.30. X.5680. Seizure of Battery Ignition Contact X.7680. Breaker Lever on its Pivot. With reference to your EFC1/AD18.9.30, we have had several cases of seizure of… | ||
| scan0241 | The seizure of the battery ignition contact breaker lever, identifying tight bush clearance and lack of lubrication as causes. | ||
| View original record | N-W. --- Y7680 All/H.22.9.30. X5680 X7680. Technical - Seizure of Lever of Battery Ignition Contact Breaker on its Pivot. Thank you for youe EFC1/AD.15.9.30. We have had several cases of sticking… | ||
| scan0242 | Cases of the battery ignition contact lever pivot seizing due to lack of lubrication. | ||
| View original record | To E. from EFC. c. Hy. X7680 EFC5/AD23.9.30. X.5680 X.7680. BATTERY IGNITION CONTACT LEVER PIVOT. We have experienced several cases of the battery ignition contact breaker lever seizing on its pivot.… | ||
| scan0243 | Proposing two modifications for a self-lubricating pivot pin, noting it was tested on chassis 10-G3. | ||
| View original record | EFC5/AD23.9.30 contd. -2- and lock washer. This was run on chassis 10-G3, and no trouble was experienced. It had not the self-lubricating feature now proposed. May we suggest the following two… | ||
| scan0244 | Material selection for the battery ignition contact lever pivot to prevent corrosion and wear. | ||
| View original record | EFC. c. E. c. BY/RD. X7680. RECEIVED BY5/G.29.9.30 X5680 X7680 SEP 30 1930 BATTERY IGNITION CONTACT LEVER PIVOT. I donot think that the combination suggested viz. stainless steel, which must be soft,… | ||
| scan0245 | Delco-Remy vacuum-operated automatic ignition advance system. | ||
| View original record | X7685 To R. from Hs/Wst. c. SG. c. WOR. E. c. Da. Hy. Hs/Wst.4/ADR 5.10.31. X6036. X7685 DELCO-REMY VACUUM OPERATED AUTOMATIC ADVANCE. The Delco-Remy Co. have produced a new system of effecting… | ||