Rolls-Royce Archives
| Identifier | Entry | ||
| Scan0 | Notes from a visit to Mr. Royce regarding the 20 HP and new 50 HP chassis. | ||
| View original record | To HN. from E. Copy to C.J. " " EH. " " RY. " " DA. " " EFC. PT - CONCEPTION ORIGINAL X.3548. X.3481. RECEIVED 20 o 40/50 19 (3) E1/G3/5/19. NOTES ON 20 H.P. AND NEW 50 H.P. - VISIT OF MESSRS.… | ||
| Scan1 | Dynamo cutout for the 20 HP chassis and modifications for Michelin wheels. | ||
| View original record | E1/G1/5/19 Contd. -2- have been making during the War, the time occupied should be considerably less and probably a month would suffice. X.3533(5) CUTOUT FOR DYNAMO.- For the 20 H.P. and possibly the… | ||
| Scan4 | Omissions in the blueprint for 40/50 HP progressive friction shock dampers and requesting completion of the design. | ||
| View original record | To RA. } from E. By. Copy to CJ. BN. LH. EFC. ORIGINAL X3461. RE 40/50 H.P. PROGRESSIVE FRICTION SHOCK DAMPERS. RECEIVED We have duly received the blue print of drawing No. Lec.1077, the drawing of… | ||
| Scan5 | Electrical quantities and starting torque for the 20 HP starting motor. | ||
| View original record | To EFC. from E. Copy to OJ. " " BN. " " DA. " " EH. ORIGINAL 3 E5/G5/5/19. D RECEIVED 7 MAY 1919 X.3534 RE 20 H.P. STARTING MOTOR. In getting out the electrical quantities for the 20 H.P. starter… | ||
| Scan6 | Outlining the policy to use hand-operated radiator louvres combined with a thermometer for the immediate future. | ||
| View original record | To BN. from R. Copy to CJ. " " EH. ORIGINAL. R1/G6/5/19. RE LOUVRES ON RADIATOR. It is understood that for the near future we use the combination of a set of hand operated louvres from the dash on the… | ||
| Scan7 | Paint colour specimens for a 40/50 HP chassis, detailing Mr. Royce's preferences for a warm buff colour and black leather upholstery. | ||
| View original record | To EH. from E. Copy to EFC. CJ. (crossed out) BN. (crossed out) ORIGINAL. X.3553. RE NEW 40/50 H.P. CHASSIS FOR WEST WITTERING. We return herewith four specimens of brown and khaki colours and one… | ||
| Scan8 | 'Goshawk' main oil feed and other details, referencing drawing LeC.1083. | ||
| View original record | S192 D (02-E-6) 143 C 2) (T 001) A682 S.R COPY. ORIGINAL To Da. from E. c. to CJ. c. to Bn. c. to EH. c. to EFC. X.3572 - RE "GOSHAWK" MAIN OIL FEED AND OTHER DETAILS. Please find attached drawing No.… | ||
| Scan9 | Model water pump rotor for an 'Eagle' engine that needs to be rescued from scrap material. | ||
| View original record | To BY. from E. Copy to EH. ORIGINAL RECEIVED 1919 RE WATER PUMP ROTOR FOR PUMP WITHOUT DIFFUSER. "EAGLE" ENGINE. Referring to your memo BY7/P7/12/18, would you kindly note that we have returned the… | ||
| Scan10 | Chart of six numbered paint swatches in various shades of yellow and brown, with their handwritten pigment compositions. | ||
| View original record | 3. Orange 6. Black Or. Van B. Tints & Vermillion 4. Black Orange & Van Brown 7. As above but diff mixture 5. Black, Orange, Van B & Red Brn 8. Black & Orange MBrown & Tints Brown | ||
| Scan11 | Details for the 40/50 HP radiator shutters and control mechanism. | ||
| View original record | To - B.A. from E. Copy to Gd. " " DH " " EH " " EFC. " " RV ORIGINAL E2/G17/5/19. (2) RE 40/50 H.P. RADIATOR SHUTTERS. X.3499 We send you herewith LeC.1086 and LeC.1087, giving further details… | ||
| Scan12 | Design improvement for 40/50 HP chassis pistons by using concave crowns to reduce knocks. | ||
| View original record | To DH. from E. Copy to: " PAL " ELL " DY. " EFC. ORIGINAL. RE 40/50 H.P. CHASSIS PISTONS FOR LONG CONNECTING RODS.- FOR REPAIR WORK. X.3559 With reference to the aluminium pistons to be used with the… | ||
| Scan13 | Chassis wiring scheme with distribution board and an alternative using a Lucas switch-box. | ||
| View original record | To BY. from E. [Struck through] Copy to C.I. [Struck through] " " AN. [Struck through] " " EH. [Struck through] " " DA. [Struck through] " " SPCT [Struck through] ORIGINAL. [Stamped] RE CHASSIS WIRING… | ||
| Scan14 | Mr. Royce's recommendation for wiring the starter switch in series to simplify connections. | ||
| View original record | To BY. from E. -2- El/G17/5/19 Contd. on this point. Mr. Royce considers that the main switch and actuating switch of the starter would be better joined in series instead of in parallel, for the… | ||
| Scan15 | Assembly breakdown schedule for various AW/AD053/S police car models. | ||
| View original record | TS (ASSEMBLY BREAKDOWN) DRAWING SIZE/REF. N.D. SCHEDULE NO. 21B 250. SUB SECTION SHEET NO. 1 OF 4. 10W39/40/41/2 10W53/4/55/6/57/8/59/60 8/199 Vehicles:- AW/AD053/S AW/AD053/S Police Cars. A/AD053/S… | ||
| Scan16 | Instructions for the 20 HP wheelcase and gears, detailing magneto and camshaft drive fittings. | ||
| View original record | To D.H. from E. Copy to C.J. E.P.C. ORIGINAL. RECEIVED 20 MAY 1919 E1/G19/5/19. RE 20 H.P. WHEELCASE AND GEARS. X.3551. We send you herewith drawing No. Lec.1088. We have shewn fabric couplings for… | ||
| Scan17 | From E. to D.A. regarding the delayed dispatch of water pump connections, fan drive, and crankshaft parts. | ||
| View original record | To DA. from E. -2- E1/G19/5/19 Contd. job as far as indicated. The water pump connections will be sent at a later date, as also the fan drive and crankshaft gear wheel spring drive. E. | ||
| Scan18 | Defects in the Dunlop spanner for detachable wire wheels with suggestions for improvement. | ||
| View original record | To BN from R. c. to CJ. c. to BY. c. to Da. c. to EH. ORIGINAL copy R2/G20.5.19. RE DUNLOP SPANNER. X.890 The spanner as arranged by Dunlops for the detachable wire wheels is defective in two parts.… | ||
| Scan19 | Drawing No. LeC.1092 for the control mechanism of radiator shutters. | ||
| View original record | To DA. from E. Copy to C.J. " " BN. " " EFC. X 3499 E3/G23/5/19. RE RADIATOR SHUTTERS. ORIGINAL We send you herewith drawing No. LeC.1092 shewing the portion of the control mechanism which is fitted… | ||
| Scan20 | Redesign and material specifications for a ballast resistance unit on a 40/50 HP chassis. | ||
| View original record | To DA. from E. Copy to CJ. " " BN. " " BY. " " EH. " " EFC. ORIGINAL. E1/26/24/5/19. 1919 RE BALLAST RESISTANCE ON IGNITION COIL X.3445 40/50 H.P. CHASSIS. X.3129 RECEIVED We send you herewith drawing… | ||
| Scan21 | Standardisation and cost of the ballast resistance design for an ignition coil. | ||
| View original record | To DA. from E. -2- E1/G24/5/19 Contd. be pinned to the bolt passing through the centre of the coil, and the collar itself made hexagonal. The electrical connection to this central bolt from the low… | ||
| Scan22 | Design flaw (a twist) in the 20 HP bonnet, requiring alteration and a scale model. | ||
| View original record | To Dr.) from E. D.A.) Copy to Gd. H. RM. EH. EFC. ORIGINAL 2 E3/G27/5/19. 28 MAY 1919 RECEIVED RE 20 H.P. BONNET. X.3561 We find that in the first rough drawings made of the 20 H.P. Bonnet, the top… | ||
| Scan23 | Adoption of scheme N.58 for Michelin disc wheels on the 20 HP car. | ||
| View original record | To D.A. from E. Copy to C.L. * * [text struck through] * * [text struck through] * * EFC. ORIGINAL X.3482B 2 D E2/G28/5/19. 1919 [illegible stamped text] RE MICHELIN DISC WHEELS FOR 20 H.P. CAR.… | ||
| Scan24 | Wiring and connections for a Lucas supplementary distributing box. | ||
| View original record | To EFC. from R. Copy to CJ. " " BN. ORIGINAL. R3/G28/5/19. 2 X.3564. RE LUCAS SUPPLEMENTARY DISTRIBUTING BOX. We understand from your memo EFC4/T24/5/19 that it is necessary for the charging switch to… | ||
| Scan25 | Standardisation of a radiator shutter control, referencing drawing No. Lec.1093. | ||
| View original record | To DA. from E. Copy to Gde. [Struck through] BW. [Struck through] EPC. [Struck through] ORIGINAL. E1/G29/5/19. 2 RE RADIATOR SHUTTER CONTROL. X.3499 We send you herewith drawing No. Lec.1093 shewing… | ||
| Scan26 | The necessary modifications for producing left-hand steering vehicles. | ||
| View original record | To C.J. from R. Copy to OY. [struck through] " " BN. " " EH. ORIGINAL. R1/G29/5/19. 2 JUN 1919 RECEIVED X.3562. RE RIGHT AND LEFT HAND STEERING. I am in receipt of Mr. Olley's letter (OY6/F13/5/19) re… | ||
| Scan27 | Need for a new chassis for the American factory, as the old design is considered antiquated. | ||
| View original record | To CJ. from R. STEERING (CONTD.) -2- R1/G29/5/19 Contd. a new chassis for the American factory. I feel sure that our old chassis is quite too antiquated in design to start on a new set of tools for… | ||
| Scan28 | Patenting and constructing an electrical mileage register and speed indicator. | ||
| View original record | To EH. from R. Copy to SRN. Copy to CJ. ORIGINAL. R8/G29/5/19. 3 X.1804 RE ELECTRICAL MILEAGE REGISTER AND SPEED INDICATOR. I quite think it would be worth while to have a patent got out for an… | ||
| Scan29 | Instructions on fitting the temperature indicator for the 40/50 HP chassis. | ||
| View original record | To DA. from E. Copy to CJ. * BN. * * EH. * * KFC. * SY ORIGINAL. x.3565 E1/G30/5/19. 2 RE TEMPERATURE INDICATOR FOR 40/50 H.P. CHASSIS. RECEIVED Would you kindly note that Mr. Royce does not consider… | ||
| Scan30 | Chasing up promised samples of sheet metal terminals for low tension connections. | ||
| View original record | To E.H. from E. Copy to C.J. " " BN. " " DA. " " EFC. ORIGINAL. E3/G30/5/19. 2 X.1928- RE SHEET METAL TERMINALS FOR LOW TENSION CONNECTIONS. We have never yet seen the promised samples of sheet metal… | ||
| Scan31 | Two schemes for ignition wire fittings on the 40/50 HP chassis. | ||
| View original record | To DA. from E. Copy to C.J. " " BN. " " BY. " " EPC. X.3474 ORIGINAL. E1/C31/5/19. 2 RE 40/50 H.P. CHASSIS - IGNITION WIRE FITTINGS - E.17146. RECEIVED We send you herewith Lec.1098 illustrating the… | ||
| Scan32 | Approval and future design of wiring tubes, including material choices. | ||
| View original record | To DA. from E. -2- EL/G31/5/19 Contd. of black insulation, they should be bell-mouthed, and the insulation should be carried round the edge of the bell-mouthing in the form of a bead. Referring now to… | ||
| Scan33 | Mr. Royce's recommendations for the experimental 40/50 HP magneto drive and its fabric couplings. | ||
| View original record | To D.A. from E. Copy to CJ. " " BN. " " EH. " " EFC. ORIGINAL. E3/G31/5/19. X.3530A/B. RE EXPERIMENTAL 40/50 H.P. MAGNETO DRIVE - N.SCHEME 52. RECEIVED 2 JUN 1919 In reply to your memo to Mr. Royce… | ||
| Scan34 | Alterations to a drive design, with sketches of proposed front and rear joints. | ||
| View original record | To DA. from E. -2- E3/G31/5/19 Contd. the castellated type of drive, in which case the design should be altered as follows. The front joint should be made with the simplest form of dust cover, thus -… | ||
| Scan35 | Copy of a telegram from R. regarding the design of junction blocks for a battery box. | ||
| View original record | Mr Clarke X.1928 Copy of telegram from R. ORIGINAL B X.3564 Barrington we understand you require design of junction blocks for end or side of battery box to which battery leads can be brought and… | ||
| Scan36 | Investigation into the internal resistances of various lighting and starting batteries. | ||
| View original record | To R. from EPC. c.c. to CJ. c.c. to EY. c.c. to Da. c.c. to HH. EFC1/12.5.19. ORIGINAL. X.664 - BATTERIES. (INTERNAL RESISTANCES). We have carefully investigated the matter of internal resistances of… | ||
| Scan37 | Comparative analysis of various batteries based on their voltage performance under different loads. | ||
| View original record | Contd. -2- EFC1/T2.5.19. Battery. Open circuit Minimum instant- Steady reading of Voltage. aneous reading of voltmeter when current voltmeter on switch- had fallen to 90 amps. ing on current.… | ||
| Scan38 | Procedure for testing battery performance by taking voltage readings under a specific current load. | ||
| View original record | Contd. -3- EFCL/T2.5 19. We did not use the starter motor but we arranged a group of resistance wires in parallel of such a resistance as to take about 100 amperes at about 11 volts. We would have… | ||
| Scan39 | Test report comparing the performance of various batteries under different loads. | ||
| View original record | Contd. -4- EFC1/T2.5.19. Battery. | Current switched on. | Steady terminal voltage when current attained a steady value. | Instantaneous voltage reading when current was broken. | Difference of… | ||
| Scan40 | Test report detailing readings of voltage, current, and resistance for a Chloride battery. | ||
| View original record | -5- EPC1/T2.5.19. Contd. point we record a series of readings on one battery, between each of which we increased the resistance by cutting one of the ten resistance wires which, at the start, were all… | ||
| Scan41 | Review and comparison of various battery types, including Lucas, C.A.V., and P.A.R. | ||
| View original record | R.R. 235A (500 T) (S.D. 408. 26-4-17.) Bm. 2/156/13. -6- EFC1/T2.5.19. Contd. You will notice that we have specified that the internal resistance should not exceed .025 ohm when carrying 100 amperes.… | ||
| Scan42 | Report comparing the performance results of Chloride, Tudor, and Fuller batteries against specifications. | ||
| View original record | Contd. -7- EFC1/T2.5.19. Chloride 60 ampere hour ebonite. Capacity results of this battery have been very good. The internal resistance is quite reasonable and would easily comply with our… | ||
| Scan43 | Instruction from Mr. Royce to test if a three-bladed radiator fan performs as well as a six-bladed one. | ||
| View original record | To EH. from E. (EH is struck through) Copy to CD. (CD is struck through) " " BN. (BN is struck through) " " DA. " " EFC. 20 (handwritten in circle) ORIGINAL (stamped) E8/G5/6/19. 2 RE RADIATOR FANS.… | ||
| Scan44 | Description and specifications of the Lucas E.575 Dynamo. | ||
| View original record | R.R. 235A (500 T) (S.D. 408. 26-4-17.) Bm. 2/156/13. EFC1/T7.5.19. To R. from EFC. c. to CJ. c. to BN. c. to E. c. to By. c. to Da. c. to EP. c. to EH. ORIGINAL. RE LUCAS E.575 DYNAMO. The dynamo… | ||
| Scan45 | Continued description of a dynamo's operation, detailing its two-pole winding, armature resistance, and the Rotax Leitner regulation principle. | ||
| View original record | Contd. -2- a two pole winding; it has 30 slots and there are 30 commutator segments. The resistance of the armature is .44 ohm measured cold. The connections of the various windings to the various… | ||
| Scan46 | Analysis of current behaviour in a dynamo's brushes and armature at various rotational speeds, comparing different dynamo types. | ||
| View original record | R.R. 235A (500 T) (S.D. 408. 26-4-17.) Bm. 2/156/13. Contd. -3- EFCl/T7.5.19. attains a zero value (when the voltage between the control and negative brushes is zero) and then reverses with further… | ||
| Scan47 | Performance comparison and analysis of a dynamo against a C.A.V. model, detailing construction and test results. | ||
| View original record | R.R. 235A (500 T) (S.D. 408. 26-4-17.) Bm. 2/156/13. -4- EFC1/T7.5.19. Contd. than in the C.A.V. case, therefore, other things being the same, the armature heating should.be less. The general… | ||
| Scan48 | Report page detailing the voltage and current characteristics of a dynamo connected to a battery. | ||
| View original record | R.R. 235A (500 T) (S.D. 408. 26-4-17.) Bm. 2/156/13. -5- EFC1/T7.5.19. Contd. secondly when correctly connected according to diagram (c) on sheet F. This voltage is somewhat higher when correctly… | ||
| Scan49 | Page describing dynamo performance under various conditions, analysing performance curves and comparing it to other systems. | ||
| View original record | R.R. 235A (500 T.) (S.D. 408. 26-4-17.) Bm. 2/156/13. Contd. -6- EFC1/T7.5.19. when it opposes the main field current in its action on the pole), is rapidly reduced to zero and then rapidly increases… | ||
| Scan50 | Report comparing performance curves and electrical measurements for a dynamo or shunt machine. | ||
| View original record | R.R. 235A (500 T) (S.D. 408. 26-4-17.) Bm. 2/156/13. Contd. -7- EFCl/T7.5.19. supplied with the Lucas switchboard has gone or been removed. The cutting-in speed is very much later. The current is… | ||
| Scan51 | Test data and diagram for a Lucas E.575 Dynamo, detailing current measurements at various speeds. | ||
| View original record | R.R. 235A (500 T) (S.D. 40s. 26-4-17.) Bm. 2/156/13. 6.5.19. LUCAS E.575 DYNAMO. Table of currents. Speed. | Main current. (M) | Field current. (F) | Control current. (C) | Main + ve brush current. (M… | ||
| Scan52 | Graph of open circuit voltage curves for a Lucas E.575 dynamo with separate excitation. | ||
| View original record | LUCAS E.575. DYNAMO OPEN CIRCUIT VOLTAGE CURVES SEPARATE EXCITATION A VOLTS 70 60 50 40 30 20 10 0 FIELD AMPERES 0 .5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 MAIN VOLTAGE 2500 R.P.M. VOLTAGE BETWEEN +VE AND… | ||
| Scan53 | Graph of open circuit volt curves for a Lucas E.575 Dynamo under self-excitation. | ||
| View original record | LUCAS E.575. DYNAMO Open circuit volt curves Self Excitation (a) As plain shunt machine (c) Controlled A B VOLTAGE (CURVES A) VOLTAGE (CURVES B) (c) (a) 720 R.P.M. 760 R.P.M. 13.5 VOLTS DYNAMO SPEED… | ||
| Scan54 | Graph of output-speed curves for a Lucas E.575 Dynamo with 4, 5, 6, and 7 cells. | ||
| View original record | LUCAS E.575 DYNAMO As plain shunt wound machine. Output-speed Curves to 4, 5, 6 and 7 fully charged large capacity cells in series. OUTPUT AMPERES DYNAMO SPEED (R.P.M) 4 cells 5 cells 6 cells 7 cells… | ||
| Scan56 | Graph of output speed curves for a Lucas E.575 Dynamo under various connection configurations. | ||
| View original record | E. MAIN AND CONTROL CURRENTS (AMPERES) DYNAMO SPEED (R.P.M.) OUTPUT SPEED CURVES OF LUCAS E.575. DYNAMO variously connected supplying 6 fully charged large capacity cells in series (a) As Plain shunt… | ||
| Scan57 | Wiring diagrams for a Lucas E 575 Dynamo, showing different brush connection configurations. | ||
| View original record | LUCAS E 575. DYNAMO 7. (a) Plain shunt O Control brushes lifted. (b) Control brush connected to -ve brush. Direct to control brush (c) Correctly connected (d) -ve brush disconnected. (e) Plain shunt… | ||
| Scan58 | Operation and regulation of Smith (T & M) Type A and Type 3A dynamos. | ||
| View original record | To R. from EFC. c. to CJ. c. to Bm. c. to E. c. to BY. c. to EP. c. to DA. c. to EH. ORIGINAL. X. 295 THE SMITH (T & M) TYPE A AND TYPE 3A DYNAMOS The above dynamos have been supplied to us as samples… | ||
| Scan59 | Comparative performance analysis of dynamo machines, detailing regulation, construction, and a supplied cut-out. | ||
| View original record | Contd. -2- EFC4/T12.5.19. moment is to give the comparative performance under normal conditions of one of these machines with the other machines we have tested. This will be found expressed as curves… | ||
| Scan60 | Comparison report on different dynamo machines and their contact surfaces, with a recommendation for further testing. | ||
| View original record | Contd. -3- three contact surfaces, two of copper and one of metal which looks like platinum, on which the break will be taken. Each of the two copper contact surfaces is as large as that provided on… | ||
| Scan61 | Particulars of Smith (T & M) 12 Volt Chassis Dynamos, Type A and Type 3A. | ||
| View original record | Y.295.-PARTICULARS OF SMITH (T & M) 12 VOLT CHASSIS DYNAMOS. Type A. Type 3A. Carcase. Material I.C. I.C. Length 6.75 5.50 Diameter 5.69 5.69 Thickness .375 .375 Armature. Diameter 3.15 3.15 Active… | ||
| Scan64 | Comparative output curves for C.A.V.NG.R.R., Lucas E.575, and Smith (T&M) Type A dynamos. | ||
| View original record | COMPARATIVE OUTPUT CURVES OF C.A.V.NG.R.R. LUCAS E.575. TYPE DYNAMOS. AND SMITH (T&M) (TYPE A) WEIGHTS 36 1/2 lbs 29 lbs 32 lbs (AMPERES) DYNAMO SPEED (R.P.M) Curve Labels: SMITH (T&M) TYPE A… | ||
| Scan65 | Questioning the effectiveness of a second fuse added to a new type of Lucas switchboard. | ||
| View original record | To R. from EFC c. to CJ. c. to Bn. c. to E. c. to BY. c. to EP. c. to Da. c. to EH. ORIGINAL. X. 3014 - LUCAS SWITCHBOARD - NEW TYPE On the new type Lucas switchboard which the Lucas Co. are supplying… | ||
| Scan66 | On the trial of 'D' type side levers, which are considered a satisfactory and preferable alternative to the standard 'C' levers. | ||
| View original record | To BY. from EH. c. to EN ORIGINAL EH3/L029.5.19. 2 29th. May 1919. RE SIDE LEVERS. X.3462. We have tried on the new chassis, a steering wheel in "C" position with the "D" type side levers. We consider… | ||