Rolls-Royce Archives
| Identifier | Entry | ||
| Scan0 | Requesting more battery sets be put on test for the rear frame position. | ||
| View original record | To EFC. from R. Copy to CJ. ORIGINAL. R8/G4/5/20. 2 X.3619 RE BATTERY FOR REAR FRAME POSITION. With reference to the battery for the rear frame position, I shall be glad if you will get some more sets… | ||
| Scan1 | Modification to the depth of the rear 'Buzzard' frame. | ||
| View original record | To DA. from E. Copy to EFC. ORIGINAL E1/G5/5/20. 3 X.4043 RE "BUZZARD" FRAME. RECEIVED 6 MAY 1920 In reply to your memo DA2/CB3/5/20, kindly note it has been necessary to make some further… | ||
| Scan2 | Testing of a Smith dynamo with a Lucas cut-out and the ongoing design of a new cut-out. | ||
| View original record | To EFC. from R. Copy to CJ. ORIGINAL. X.3958 RE CUT-OUTS. X.295 X.3770 R1/G8/5/20. 11 MAY 1920 RECEIVED We are going into the question of the cut-out, but we feel sure we ought not to delay the test… | ||
| Scan3 | Requesting a test to see if brake brackets can be bolted and sweated onto rear axle tubes instead of being brazed. | ||
| View original record | To HS. from R. Copy to CJ. ORIGINAL R7/G8/5/20. 3 X.3454. RE BRAKE BRACKETS ON REAR AXLE TUBES. X.4063 I am expecting you to test whether the brake brackets on the rear axle tubes can be bolted and… | ||
| Scan4 | Designs for the 'Buzzard' wheelcase and gears, listing completed units. | ||
| View original record | TO DA. from E. Copy to CD. BN. HS. EPC. BY. X.3814 RE "BUZZARD" WHEELCASE AND GEARS. ORIGINAL. E2/G8/5/20. (3) We send you herewith drawing No. LeC.1234 shewing the designs for some of the main units… | ||
| Scan5 | Drawings for the 'Buzzard' chassis, specifically side channels and cross members. | ||
| View original record | To BA. from E. Copy to CJ. " " BNo. " " HS. " " EPC. " " BY. X4043. RE "BUZZARD" CHASSIS. ORIGINAL. E1/G8/5/20. We send you herewith drawings No.s Lec.1231/2/3, shewing Side Channels, Third Cross… | ||
| Scan6 | The creation of a reference sheet for the properties and faults of resistance wires made from various alloys. | ||
| View original record | To EFC. from R. Copy to CJ. ORIGINAL RECEIVED X.1623 RE RESISTANCE WIRES OF VARIOUS MATERIALS To enable us to judge the value of received alloys, I suggest you make a large reference sheet shewing -… | ||
| Scan7 | Rejection of poor quality steel castings and proposing a new design with forgings. | ||
| View original record | To BY. from R. Copy to C.I. " " BN. " " DA. " " OY. " " HS. ORIGINAL. x4042 RE STEEL CASTINGS. x3419 x4062 x3431 RECEIVED 17 MAY 1920 In confirmation of the discussion that took place here with regard… | ||
| Scan8 | Alternative materials and manufacturing methods for engine components, specifically castings and exhaust pipe nozzles. | ||
| View original record | To BY. from R. -2- R8/G16/5/20 Contd. I believe also it would be quite satisfactory in malle- able iron, and might even be satisfactory in aluminium, and Mr. Hives was asked to get a pair of feet as… | ||
| Scan9 | Modifications and manufacturing suggestions for an exhaust pipe fitting, flange, and cutout box. | ||
| View original record | TO BY. from R. -3- R8/G15/5/20 Contd. because the fitting could quite well even be made by hand in the sheet metal working shop, until punches and pressing dies are procurable. If it was thought that… | ||
| Scan10 | Requesting criticism on dynamo and motor curves, and discussing potential motor redesign. | ||
| View original record | To EFC. from R. Copy to CJ. ORIGINAL RECEIVED X. 294 X. 543 RE DYNAMOS AND MOTORS X.1058 X.4007 X.1086 X.4030 X.3966 Will you kindly criticise the curves on dynamos and motors sent by Mr. Olley,… | ||
| Scan11 | The receipt and requested performance testing of an aero type dynamo. | ||
| View original record | To EFC. from E. Copy to CJ. " " BN. " " HS. ORIGINAL RE AERO TYPE DYNAMO. X.4064 X.1402 2 E4/G19/5/20. We forwarded to you on the 13th instant by Mr. Hives, an aero type dynamo received at West… | ||
| Scan12 | Design change to the 'Buzzard' crankshaft extension. | ||
| View original record | To DA. from E. Copy to CJ. " " BN. [Struck through] " " BY. [Struck through] " " HS. [Struck through] " " EFC. X.3788 RE "BUZZARD" CRANKSHAFT. ORIGINAL URGENT. E1/G19/5/20. In accordance with Mr.… | ||
| Scan13 | The 'Buzzard' Valve Gear, sending drawing No. Lec.1236 and noting the worm driving gear design is not yet final. | ||
| View original record | To DA. from E. Copy to CJ. [Struck through] " " BN. [Struck through] " " HS [Struck through] " " BY. [Struck through] " " EFC. X.3802. RE "BUZZARD" VALVE GEAR. ORIGINAL E1/G21/5/20. 2 We send you… | ||
| Scan14 | Quoting Mr. Royce's request for resistance data of alloys relative to copper to enable calculations. | ||
| View original record | To EFC. from Rs. ORIGINAL. 2 Rs1/G22/5/20. 26. MAY 1920 X.1623 - RE RESISTANCE WIRES OF VARIOUS MATERIALS. RECEIVED With reference to your memo EFC/AT20/ which you query item (2) of R12/G15/5/20… | ||
| Scan15 | Letter discussing drawing No. Lec.1238, the general arrangement of the 'Buzzard' chassis, and required modifications. | ||
| View original record | To Ex. from E. Copy to C.J. " " RH. " " H.S. " " EFC. " " BY. X-3786 ORIGINAL RE "BUZZARD" CHASSIS. We send you herewith drawing No. Lec.1238 shewing the general arrangement of the "Buzzard" chassis.… | ||
| Scan16 | Instructions and sketches for the 40/50 HP rear engine foot scheme. | ||
| View original record | To DA. from E. Copy to C.J. * BH. * HS. * BY. * EFC. * SP. ORIGINAL. RE 40/50 H.P. REAR ENGINE FOOT. X.4062 N. SCHEME 364. RECEIVED In accordance with Mr. Royce's directions, I send you herewith his… | ||
| Scan17 | Design modifications for various cantilever and steering components with sketches. | ||
| View original record | To DA. from E. -2- E1/G28/5/20 Contd. The bore of the standard can be lightened out towards the end as shewn. The diameter of the parallel portion of the standard should be made 2" instead of 2 1/4".… | ||
| Scan18 | Continuation detailing criticisms of a securing bolt and steering box fixing. | ||
| View original record | To DA. from E. -3- E1/G28/5/20 Contd. securing bolt, but thinks that a round clearance hole is all that is needed since the engine feet are at fixed centres, and there should be no need for adjusting… | ||
| Scan19 | Drawings for alterations to the 'Buzzard' and 40/50 HP chassis models. | ||
| View original record | To DA from E. Copy to OJ. ~~* BN.~~ ~~* HS.~~ * BY. * EFC. ORIGINAL. 3 E2/G29/5/20. X.3822. RE CHASSIS MODELS OF "BUZZARD" AND 40/50 H.P. X.3862. We send you herewith drawings numbers LeC.1235/1240.… | ||
| Scan20 | Two alternative designs for the super-imposed type of connecting rods for the 'Buzzard' engine. | ||
| View original record | To BA. from E. Copy to CE. RM. HSS. DY. " " EFC. X.3790 ORIGINAL. E1/G29/5/20. RE "BUZZARD" CONNECTING RODS. We send you herewith drawing No. LeC.1239 showing two alternative connecting rods of the… | ||
| Scan21 | The performance curves of a non-trembler battery ignition standard coil, comparing different polarities. | ||
| View original record | R.R. 225A (100 T) (S.G. 643, 19-2-20) G. 2618 To R. from EFC. c. to CJ. c. to E. c. to EP. c. to Bn. c. to Da. c. to Hs. EFC1/T8.5.20. X.3129 - BATTERY IGNITION. STANDARD COIL. X 3445. We attach… | ||
| Scan22 | Continuation page discussing the relationship between two phenomena and coil efficiency. | ||
| View original record | Contd. -2- EFC1/T8.5.20. We anticipated that these two phenomena would occur at the same time as the general efficiency of the coil was improved. EFC. | ||
| Scan23 | Graph showing maximum cap-speed curves for a present production battery ignition coil. | ||
| View original record | MAXIMUM CAP-SPEED CURVES FOR PRESENT PRODUCTION BATTERY IGNITION COIL (X3445.) I CURVE (b) CURVE (a) (INCHES) 0 100 200 300 R.P.M. OF CONTACT BREAKER 400 600 800 1000 1200 1400 1600 1800 Recd. 5/5/20… | ||
| Scan24 | Blank cover page with a 'Received' date stamp from Derby. | ||
| View original record | RECEIVED TEST DEPT Rd. 15' MAY. 20 DERBY | ||
| Scan25 | The investigation and testing of Lucas E.575 dynamos and X.3770 cut-outs. | ||
| View original record | To R. from EPC. c. to CJ. c. to E. c. to Da. c. to Bn. c. to PN. c. to Ey. c. to EP. c. to Hs. COPY ORIGINAL X.3014b - LUCAS E.575 DYNAMO. X.3770. - LUCAS CUT-OUT. Since issuing our report… | ||
| Scan26 | Investigation into the performance of electrical cut-outs for Lucas dynamos, detailing specification requirements and test results. | ||
| View original record | R.R. 235A (100 T) (S. G. 643, 19-2-20) G 2618 EFC1/T14.5.20. -2- Contd. circuit voltage and therefore late in operating the cut-out. This we are suggesting returning to Messrs. Lucas for… | ||
| Scan27 | Report page detailing the investigation and inconsistent test results of various electrical cut-outs. | ||
| View original record | Contd. -3- EFC1/T14.5.20. According to our specification only one of these cut-outs, namely, No.19 passes. We are, however, allowing Nos. 14267 and 15770 to pass and suggesting that Nos. 29, 91 and… | ||
| Scan28 | Analysis of faults and testing procedures for Lucas cut-outs and dynamos on the R.R. car. | ||
| View original record | R.R. 235A (100 T) (S. G. 643, 19-2-20) G 2618 Contd. -4- EFCG/T14.5.20. and spring tension — gap curves of the moving mechanism, complicated by the frictional effect which leads to indefin- iteness.… | ||
| Scan29 | Test procedure and observations for a cut-out device, noting voltage, speed and current measurements at different operational points. | ||
| View original record | R.R. 235A (100 T) (S. G. 643, 19-2-20) G 2618 Contd. -5- EFC1/T14.5.20. (2) After the operation of the cut-out the speed was re-adjusted to the same figure as for (1) and with the cut-out still in the… | ||
| Scan30 | Test data for Lucas Dynamos and Cut-outs showing performance under cold and hot conditions. | ||
| View original record | R.R. 235A (100 T) (S.G. 643, 19-2-20) G 2618 Contd. -6- EFC1/T14.5.20. Dynamo:- Lucas E.575 No. R.1276. Cut-out:-Lucas No.19. Condition. | Volts. | Amperes. | Speed. | Corresponding approx. dynamo… | ||
| Scan31 | Test data sheet for two Lucas dynamos and cut-outs, detailing volts, amperes and speed under hot and cold conditions. | ||
| View original record | R.R. 235A (100 T) (S. G. 643, 19-2-20) G 2618 Contd. -7- ZFC1/T14.5.20. Dynamo:- Lucas E.575. R.1223. Cut-out:- Lucas No.91. Condition. | Volts. | Amperes. | Speed. | Corresponding approx. dynamo… | ||
| Scan32 | Test data sheet for two sets of Lucas dynamos and cut-outs, showing performance figures under hot and cold conditions. | ||
| View original record | R.R. 235A (100 T) (S. G. 643, 19-2-20) G 2618 Contd. -8- EPC1/T14.5.20. Dynamo:- Lucas E.575 No. R.1322. Cut-out:- Lucas No.14267. Condition. | Volts. | Amperes. | Speed. | Corresponding approx dynamo… | ||
| Scan33 | Report comparing operating voltages of dynamo cut-outs and discussing measures to improve their uniformity. | ||
| View original record | R.R. 235A (100 T) (S. G. 643, 19-2-20) G 2618 Contd. -6- EFCI/T14.5.20. Comparison of the operating voltages in the above six tables will show that these agree quite well with those given in tables B… | ||
| Scan34 | Test results table for Lucas E.575 and X.1627 dynamo models. | ||
| View original record | X.3014b.-LUCAS E.575 DYNAMO. X.1627. TEST TABLES. Dynamo number | (2) Cold condition Temp. (°C) | (2) O.C. volts at 625 RPM. | (3) Output in amperes after 20 minutes at 1750 RPM. | (3) Volts. | (4)… | ||
| Scan35 | Test table results for Lucas cut-out components under cold conditions. | ||
| View original record | X. 3770. LUCAS CUT-OUT. X.1627. TEST TABLES. Cut-out number. | Cold condition just operated at | Cold condition Just de-operated at | Shunt Ohms (Cold) | Remarks. --- | --- | --- | --- | --- | Volts.… | ||
| Scan36 | Test table for a Lucas Cut-Out, showing operational data under cold and hot conditions. | ||
| View original record | X.3770. LUCAS CUT-OUT. TEST TABLE. 5.5.20. Cut-out number. | Cold or Hot. | Just operated at | Just de-operated at | Shunt Ohms. | Remarks. Shunt Volts. | Shunt Amperes. | Shunt Volts. | Shunt Amps. |… | ||
| Scan37 | Index for a report on a visit to West Wittering, detailing various car and engine parts. | ||
| View original record | To - HS. DA. } from E. HY. Copy to - CJ. " WOR. " DN. " EPC. ORIGINAL 20 MAY 1920 RECEIVED E1/G18/5/20. RE VISIT OF MESSRS. HIVES, DAY, AND BAILEY TO WEST WITTERING 12th MAY, 1920. INDEX. PAGE NO.… | ||
| Scan38 | Design changes for bonnet models and a rear engine foot bracket following a visit to West Wittering. | ||
| View original record | To HS. } from E. " DA. } " BY. } Copy to CJ. " " WOR. " " BN. " " EPC. RE VISIT OF MESSRS. HIVES, DAY, AND BAILEY, TO WEST WITTERING 12th MAY, 1920. 40/50 H.P. CHASSIS. X.3822/3862. X 3821/3861.… | ||
| Scan39 | Design notes on securing a steering box and the construction of a sheet metal silencer outlet pipe nozzle for a 40/50 HP model. | ||
| View original record | HS., DA, & BY. -2- E1/G18/5/20 Contd. The steering pad for carrying the steering box should be carried by a special boss provided on one of the foot brackets, and should be secured by brazing, as… | ||
| Scan40 | Design suggestions for an exhaust pipe and cut-out flange, including material thickness and manufacturing methods. | ||
| View original record | To HS. DA. & BY. -3- 21/G18/5/20 Contd. exhaust pipe by welding in the usual manner round the end, and should be additionally secured top and bottom by welding through holes in the cylindrical portion… | ||
| Scan41 | Design notes on rear springs and front shock absorber anchorages for the 40/50 HP chassis. | ||
| View original record | To HS. DA. & BY. -3A EL/G18/5/20 Contd. This forging should be got in hand at the earliest possible moment. Further, Mr. Royce wishes Mr. Hives to test a 2½" dia-meter pipe between the silencers with… | ||
| Scan42 | Design considerations for new large chassis and engines, including Vulture, Buzzard, and Condor models. | ||
| View original record | TO HS. DA. & BY. -4- E1/G18/5/20 Contd. This modification will require a boss adding to the forging on the front axle. Mr. Royce would like Mr. Day to submit a scheme dealing with this point. NEW… | ||
| Scan43 | Continued report discussing engine crankcases, bearings, chassis frames, and works equipment. | ||
| View original record | TO HS.DA. & HY. -5- EL/G18/5/20 Contd. caps in the bottom half of the crankcase are very pronounced. They apply to some extent only to the "Buzzard" engine, and in view of this Mr. Royce has decided… | ||
| Scan44 | Inspection notes on various parts for the 20 HP chassis, with feedback from Mr. Royce. | ||
| View original record | To HS. DA. & BY. -6- E1/G18/5/20 Contd. INSPECTION OF 20 H.P. CHASSIS PARTS. X.3481 A considerable number of the pieces of the 20 H.P. chassis were brought to West Wittering for inspection, some were… | ||
| Scan45 | Mr. Royce's considerations and proposed modifications for various chassis components. | ||
| View original record | To EC. DA. & BY. -7- E1/C18/5/20 Contd. was not considered by Mr. Royce to be practical as a stamping, and he wishes it to be converted to an aluminium casting. In connection with the subject of… | ||
| Scan46 | Experimental routine tests carried out on batteries. | ||
| View original record | To R. from EFC. c. to CJ. c. to Bn. c. to E. c. to EP. c. to By. c. to Da. c. to PN. c. to Hs. c. to Oy. ORIGINAL EFC1/T18.5.20. X.664 - BATTERIES. Since issuing our last report on batteries, ref:… | ||
| Scan47 | Results and methodology of continuous and intermittent high-rate discharge tests on batteries. | ||
| View original record | Contd. -2- EFC1/T18.5.20. attached to one of which, for instance EFC2/T14.5.19, was sheet A of continuous high rate discharge curves and to another of which, for instance EFC3/T4.7.19, was a sheet of… | ||
| Scan48 | Report page showing open circuit voltage test results for various batteries. | ||
| View original record | Contd. -3- 18 KFCL/17.5.20. the actual time on contact, which was respectively one half and one quarter of the total time in the (a) and (b) cases. The readings of amperes discharge and the… | ||
| Scan49 | Analysis of battery performance under continuous and intermittent high-rate discharge conditions. | ||
| View original record | Contd. -4- EFC1/T18.5.20. It is a peculiarity of these curves for both the continuous and intermittent high rate discharges that there is, in the early stages, a tendency for the current to rise, and… | ||
| Scan50 | Page detailing results and outlining a program of special tests for batteries, including vibration, leakage and over-charging. | ||
| View original record | Contd. -5- EFC1/T18.5.20. The results for the IV section are given as photostat copies of groups of actual records taken on the recording voltmeter, all records being numbered with the number of the… | ||
| Scan51 | The testing and performance of sample batteries from Fuller and Lucas. | ||
| View original record | Contd. -6- EFC1/T18.5.20. FULLER BATTERIES. The first sample Fuller batteries received were unsuccessful in most respects as already reported. Later, however, Messrs. Fuller sent us another battery… | ||
| Scan52 | The testing and evaluation of various types of storage batteries. | ||
| View original record | Contd. -7- EFC1/T18.5.20. appreciably when discharging at a high rate. All cells are separate and held together only by the connecting links and a sort of celluloid tray with handles for lifting and… | ||
| Scan53 | Report page continuing the evaluation of Premier, Willard, and Tudor batteries. | ||
| View original record | Contd. -8- EFC1/T18.5.20. batteries tested have seemed to suffer from a similar weakness. It may be expressed that they do not seem to have much life in them. PREMIER BATTERY. This battery (13) was… | ||
| Scan54 | Battery testing, detailing an accident with two cells and plans for testing new Tudor and Chloride batteries. | ||
| View original record | R.R. 235 A (100 T) (S.F. 846. 6-8-19) G. 2460. Contd. -9- EFC1/T18.5.20. Unfortunately we subsequently had an accident to two cells of this battery by which these two cells were blown up owing to a… | ||
| Scan55 | Testing a PHR 7 battery from the Chloride Company, comparing it to standard models. | ||
| View original record | R.R. 235 A (100 T) (S.F. 846. 6-8-19) G. 2460. Contd. -19- EFC1/T18.5.20. The table will show that this battery (23) did as correspondingly well in comparison with its size as the standard size 6 BXE… | ||
| Scan56 | Table of performance data for experimental chassis lighting and starting batteries. | ||
| View original record | X. 664. TABLE OF PERFORMANCES of EXPERIMENTAL CHASSIS LIGHTING & STARTING BATTERIES. 10.5.20. | Ref. No. | Maker and X. No. | Description | Weight complete with case and acid (lbs). | Rated a.h.… | ||
| Scan57 | Table of performance data for experimental chassis lighting and starting batteries. | ||
| View original record | -2- TABLE OF PERFORMANCES of EXPERIMENTAL CHASSIS LIGHTING AND STARTING BATTERIES. Ref No. | Maker and No. | Description Type | Cell or Ebon. | Weight complete with acid (lbs) | Rated a.h. capacity… | ||
| Scan58 | Performance table of experimental chassis lighting and starting batteries. | ||
| View original record | -3- TABLE OF PERFORMANCES of EXPERIMENTAL CHASSIS LIGHTING AND STARTING BATTERIES. COLUMN HEADERS: Ref. No. Maker and X. No. Description - Type Description - Cell or Ebon. Description - Weight… | ||
| Scan59 | Graph showing high rate discharge curves for various batteries used for lighting and starting. | ||
| View original record | Y-AXIS (LEFT): AMPERES, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, 150 Y-AXIS (RIGHT): VOLTS, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 X-AXIS (BOTTOM): MINUTES, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,… | ||
| Scan60 | Cover sheet with a Print Room stamp. | ||
| View original record | J. PC ROLLS-ROYCE, LIMITED PRINT ROOM 10 MAY. 20 DERBY | ||
| Scan61 | Graph showing intermittent high rate discharge curves for various car lighting and starting batteries. | ||
| View original record | Xbbert Hall AMPERES DISCHARGE CHLORIDE 6BXE 5 (v) (82 1/2 lbs) CHLORIDE 6BXE 5 (u) (82 1/4 lbs) P. & R. PDL9E (97 3/4 lbs) P.A.T. (97 3/4 lbs) FULLER SPECIAL (87 3/4 lbs) LUCAS 1260 C3 (79 1/2 lbs)… | ||
| Scan62 | Blank folder cover stamped by the Print Room. | ||
| View original record | ROLLS-ROYCE, LIMITED PRINT ROOM. .3 8.20 DERBY E 1 | ||
| Scan63 | Graph showing high-rate discharge performance curves for various batteries used for chassis lighting and starting. | ||
| View original record | HIGH RATE DISCHARGE CURVES OF VARIOUS BATTERIES FOR CHASSIS LIGHTING AND STARTING AXES LABELS: AMPERES VOLTS MINUTES CURVE LABELS: WILLARD S.J.R.27 (82 1/2 lbs) CHLORIDE 6.BXE.5 (e) (82 1/2 lbs) TUDOR… | ||
| Scan64 | Graph of intermittent high-rate discharge curves for various car lighting and starting batteries. | ||
| View original record | AMPERES DISCHARGE INTERMITTENT HIGH RATE DISCHARGE CURVES OF VARIOUS CAR LIGHTING AND STARTING BATTERIES All batteries were discharged through the same circuit of constant resistance .0763 ohm. The… | ||
| Scan65 | Series of ten graphs comparing the performance of various electrical components under test conditions. | ||
| View original record | Graph 1: Title: C A V. 60. C (I) Volts per div .47 Amps per div .40 Ohms in circuit 1.175 No. of Hrs = 4.5 Graph 2: Title: Lucas 60. C. (ii) Volts per div .47 Amps per div .40 Ohms in circuit 1.175… | ||
| Scan67 | Four battery discharge curve graphs from tests conducted in 1920. | ||
| View original record | Top Right Graph (18): Chloride E. 26/3/20 Volts per div. = .485 Amps per div. = .41 Ohms in Circuit = 1.175 No. of hours discharge = 5.45 Top Left Graph (27): Chloride P.H.R.7 15/4/20 volts per div =… | ||
| Scan68 | Effect of brush position variation on the output of the Smith Dynamo. | ||
| View original record | R.R. 235A (100 T) (S.G. 643. 19-2-20) G 2618 To R. from EFC. c. to CJ. c. to E. c. to Bn. c. to Da c. to PN. ORIGINAL EFC2/T1915.20. X.295 - SMITH DYNAMO. We attach photostat copy of some curves… | ||
| Scan69 | Reducing the high output of the dynamo on chassis 4 EX. | ||
| View original record | Contd. -2- EFC2/T19.5.20. dynamo on chassis 4 EX to reduce the out-put of this machine to a reasonable value; as left set by the makers, the out-put was unduly high. EFC. | ||
| Scan70 | Graph showing the effect of brush position variation on the output of a Smith Type A Dynamo. | ||
| View original record | OUTPUT (AMPERES) 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 580 R.P.M 13.6 VOLTS DYNAMO SPEED (R.P.M.) 0 500 1000 1500 2000 2500 3000 EFFECT OF VARIATION OF BRUSH POSITION ON OUTPUT OF SMITH TYPE A… | ||
| Scan71 | Blank document with a purple ink stamp from the Print Room. | ||
| View original record | ROLLS-ROYCE, LIMITED PRINT ROOM. 21 MAY. '40 DERBY | ||
| Scan72 | Technical report on special ignition coils, presenting gap-speed curves and comparing performance. | ||
| View original record | R.R.235A (100 T) (S G. 643, 19-2-20) G 2618 To R. from EFC. c. CJ. c. Bn. c. Da. c. EP. c. HS. c. E. ORIGINAL EFC1/T22.5.20. X.3775 - SPECIAL IGNITION COILS. Further to our EFC2/T13.4.20, we now… | ||
| Scan73 | Graph showing maximum gap vs. speed curves for coil models E12 and E16. | ||
| View original record | MAXIMUM GAP-SPEED CURVES FOR COIL No. E12 (o) AND COIL No. E16 (x) MAXIMUM GAP (INCHES) .500 .400 .300 .200 .100 E16 E12 R.P.M. OF CONTACT BREAKER. 0 200 400 600 800 1000 1200 1400 1600 1800 R.C.S.J.… | ||
| Scan74 | Reverse of a document showing a 'Print Room' stamp. | ||
| View original record | ROLLS-ROYCE, LIMITED PRINT ROOM. 21 MAY. 20 ly 3 | ||
| Scan75 | Testing and developing a new Lucas C.575 dynamo compared to the standard E.575 model. | ||
| View original record | R.R. 235A (100 T) (S.G. 648, 19-2-20) G. 2618 To R. from EFC. c. to CJ. c. to E. c. to Bn. c. to Da. c. to EP. c. to Hs. c. to Wd. c. to PN. c. to By. ORIGINAL. EFC1/T29.5.20. 3 X.4060 - LUCAS C.575… | ||
| Scan76 | Continued discussion on the performance of E.575 and C.575 dynamos, detailing factors that affect out-put curves. | ||
| View original record | Contd. -2- EFC1/T29.5.20. the amount of such increase not being objected to by us. This again would be approximately what would have happened to the machine had Messrs. Lucas adopted Mr. Royce's… | ||
| Scan77 | Continued discussion on dynamo performance, hot out-put curves, and battery conditions. | ||
| View original record | Contd. -3- EFCl/T29.5.20. decent curve, and the dynamo is not allowed to run a moment more than is necessary in order not to allow it to heat up appreciably. Our standard condition for the hot out-put… | ||
| Scan78 | Dynamo performance, comparing the C.575 machine and suggesting optimal output settings. | ||
| View original record | R.R. 235A (100 T.) (S.G)C Contd. 2618 -4- EFC1/T29.5.20. may be very nearly the same, the out-puts of the machines at normal speed vary a little. On any one dynamn the out-put curve of the machine can… | ||
| Scan79 | Continued report comparing the performance and faults of Smith and Lucas dynamos. | ||
| View original record | R.R. 235A (100 T) (S.G. 643, 19-2-20) G. 2618 Contd. -5- EFC1/T29.5.20. from the Smith dynamos which are, however, about 2 lbs. heavier. If Messrs. Lucas would have allowed a little more weight on the… | ||
| Scan80 | Comparison of the C.575a Lucas dynamo against the E.575 and Smith dynamos for standardization. | ||
| View original record | R.R. 235A (100 T) (S G. 648. 19-2-20) G. 2618 Contd. -6- EFC1/T29.5.20. The C.575a dynamo, being of Lucas make, can take the place of the E.575 without any other alteration to the system, and in this… | ||
| Scan81 | Graph comparing the output curves of Lucas E.575 and C.575 dynamos under cold and hot conditions. | ||
| View original record | COMPARATIVE OUTPUT CURVES OF. Lucas E.575. and C.575. dynamos cold and hot Weight of either machine nearly 30 lbs Figures on curves represent operating voltages E.575. COLD E.575. HOT C.575. COLD… | ||
| Scan82 | Reverse of a document showing a purple ink stamp from the Print Room in Derby. | ||
| View original record | ROLLS-ROYCE, LIMITED PRINT ROOM. 29 MAY. 20 DERBY | ||