Rolls-Royce Archives
| Identifier | Entry | ||
| Scan0 | Requesting specimens of 'bakerised linen' for testing its suitability for use in contact breakers. | ||
| View original record | To CY. from E. Copy to CJ. " " EFC. ORIGINAL RE BAKERISED LINEN. Ell/G1/8/19. X.3513. Referring to your memo OY2/P6/2/19, we should be glad if you could send us specimens for inspection and test, of… | ||
| Scan1 | Alternative design schemes for the 20 HP model's brake gear. | ||
| View original record | To [...] from E. Copy to C.L. [...] " " EFC. ORIGINAL RE 20 H.P. BRAKE GEAR. X.3568 Referring again to the work on the 20 H.P. back axle, there is yet the scheme of the brake shaft operating gear to… | ||
| Scan2 | Sending a full-scale drawing (Lec.1119) for a 20 HP rear spring pivot. | ||
| View original record | To DA. from E. Copy to CJ. " " EFC. ORIGINAL. E4/G1/8/19. 2 RE 20 H.P. REAR SPRING PIVOT. X.3524 We send you herewith drawing No. Lec.1119 giving a full scale view of the 20 H.P. rear spring pivot, a… | ||
| Scan3 | Drawing No. LeC.1126 for the RE 20 HP rear spring pivots. | ||
| View original record | To ~~DA~~ from E. Copy to ~~G2.~~ " " EH. " " EFC. ORIGINAL E3/G7/8/19. 2 RE 20 H.P. REAR SPRING PIVOTS. X.3524. We send you herewith drawing No. LeC.1126 giving further information connected with the… | ||
| Scan4 | Faulty Buick battery, detailing cell failures and requesting an examination. | ||
| View original record | To EFC. from E. Copy to CJ. " " BN. " " EH. ORIGINAL. x.3314 RE "BUICK" BATTERY. El/G9/8/19. 2. [STAMP: RECEIVED 11 AUG 1919] On the 8th instant we sent to Derby per passenger train the battery which… | ||
| Scan5 | Modifications to the main oil feed pipe to prevent dirt settlement on the 20 HP engine. | ||
| View original record | To EH. } from E. " DA. } Copy to CJ. " " BN. X.3572 ORIGINAL E3/G13/8/19. RE MAIN OIL FEED PIPE - LEC.1083. Referring to drawing No. LeC.1083 shewing the 20 H.P. Main Oil Feed Pipe, we should like to… | ||
| Scan6 | The design and construction of a switch box for a 40/50 HP electrical system. | ||
| View original record | To EFC. from E. Copy to C.J. " " BN. " " DA. " " EH. ORIGINAL. X.3618' RE SWITCH BOX - 40/50 H.P. ELECTRICAL SYSTEM. E4/G13/8/19. 2 We send you herewith drawing Lec.1127 shewing the above. You will… | ||
| Scan7 | From 'E' to 'EFC' requesting a blueprint of drawing LeC.1127 and putting the main design on hold. | ||
| View original record | To EFC. from E. -2- E4/G13/8/19 Contd. the simple switches only, on the lines shewn on LeC.1127, and before proceeding with the main design await further instructions. Would you kindly send us a blue… | ||
| Scan8 | Response to a report on the Smith Dynamo, suggesting further comparative tests and commenting on workmanship and materials. | ||
| View original record | To EFC. from R. Copy to CJ. [strikethrough]DN.[/strikethrough] [strikethrough]EH.[/strikethrough] [strikethrough]EFC.[/strikethrough] ORIGINAL. R2/G19/8/19. 22 AUG 1919 RE SMITH (T. & M.) TYPE "A"… | ||
| Scan9 | Use and cost of lubricating oil, recommending Wakefields Castrol for its high castor oil content. | ||
| View original record | To EH. from R. Copy to C.J. W.D. [Struck through] N.A. [Struck through] ORIGINAL 4 R2/G21/8/19. RECEIVED 28 AUG 1919 X.47 X.1588 RE LUBRICATING OIL. In consequence of the small quantity of lubricating… | ||
| Scan10 | Mr. Royce's requested alterations for ignition clips, the magneto, tool kit, and spare fuel storage. | ||
| View original record | To DA. from E. Copy to CJ. " RN. " " EFC. " " EH. " " BY. ORIGINAL 25 AUG 1919 RECEIVED RE CHASSIS 1 EX. - GENERAL NOTES. X.2565 I am directed by Mr. Royce to send you information concerning the… | ||
| Scan11 | (page 2) detailing feedback from Mr. Royce on the spare wheel fitting, bonnet ledge material, and inquiring about tool kit components. | ||
| View original record | To DA. from E. -2- E9/G21/8/19 Contd allowance for wear on its length. E.1776 Would you please send information to Mr. Royce regarding the use of the large sheet steel hexagon ring spanner 1.4" across… | ||
| Scan12 | Fitting of the temperature indicator and the arrangement of the instrument board. | ||
| View original record | To - DR. from E. Copy to CF. PH. BY. EH. EFC. ORIGINAL 25 AUG 1919 RECEIVED X.3565 RE TEMPERATURE INDICATOR AND ARRANGEMENT X.1362 OF INSTRUMENT BOARD. We sent to you per registered post on the 16th… | ||
| Scan13 | Layout of dashboard electrical components and securing wiring, referencing scheme LeC.1121 and a conversation with Mr. Royce. | ||
| View original record | To DA. from E. -2- E7/G21/8/19 Contd. distribution board of the electrical system, the plug for the thermometer tube, and the starter switch, have all been arranged on the same level, the thermometer… | ||
| Scan14 | Feedback and proposed design changes for a shock absorber on a 40/50 HP chassis. | ||
| View original record | To DA. from E. Copy to Gd. " " BN. " " EFC. " " EH. " " BY. X.3461. RE SHOCK ABSORBERS - 40/50 H.P. CHASSIS. ORIGINAL RECEIVED 25 AUG 1919 The model shock absorber sent to Wittering has been inspected… | ||
| Scan15 | List of numbered technical notes and modifications for various mechanical components, including a sketch. | ||
| View original record | To DA. from R. -2- E10/G21/8/19 Contd. dispense with the nut which at present performs the double duty of securing the ball and acting as the body of the greaser. The screwed stem of the ball itself… | ||
| Scan16 | Alterations to sockets and the grease way lubrication system for a ball joint assembly. | ||
| View original record | To DA. From E. -3- E10/G21/8/19 Contd. one at each end, against which the sockets have been fixed. This appearance, however, may be quite deceptive, but in any case the construction shewn on Lec.1077… | ||
| Scan17 | Required alterations to the starter switch on Chassis 1 EX. | ||
| View original record | To EFC: from E. Copy to CJ. " " DN. " " EH. " " BY. " " EH. ORIGINAL. 25 AUG 1919 RECEIVED RE ELECTRICAL EQUIPMENT - CHASSIS 1 EX. 2565 (Strikethrough) x.3034 x.3082 Referring to the starter switch on… | ||
| Scan18 | Continued list of numbered technical points and suggestions regarding electrical components and wiring. | ||
| View original record | To EFC. from E. -2- E8/G21/8/19 Contd. (4) The rear end of the brush for the main contact should be bevelled off at the same angle as the standard, so as to clear the inside of the switch case. By (5)… | ||
| Scan19 | Alterations to the dashboard and dissatisfaction with the wiring and clips. | ||
| View original record | To EFC. from E. -3- E8/G21/8/19 Contd. This removes the maximum amount of material, but does not impair the strength of the dash. Would Mr. Day kindly carry out this alteration. The conductors for the… | ||
| Scan20 | Investigating the suitability of low tension conductors for the 40/50 HP chassis electrical system. | ||
| View original record | To EFC. from E. Copy to C.J. " " BN. " " EH. " " DA. " " BY. X.2448 ORIGINAL. 25 AUG 1919 RECEIVED E1/G22/8/19. 2 RE LOW TENSION CONDUCTORS FOR 40/50 HP.CHASSIS. You will recollect that we have asked… | ||
| Scan21 | Importance of cable sizes for terminal fittings on distribution and switch boards. | ||
| View original record | To EFC. from R. -2- El/G22/8/19 Contd. This matter is of some importance as the size of the terminal fittings on the distribution board and on the switch box is somewhat dependent upon it, and… | ||
| Scan22 | Suitability of using Ford-sized tyres on a 20 HP chassis. | ||
| View original record | To Mr. [illegible], from E. Copy to Mr. [illegible] " " [illegible] " " EFC. ORIGINAL 25 AUG 1919 RECEIVED EA/G22/8/19. 2 X.3631. RE WHEEL & TYRE 20 H.P. CHASSIS. Referring to the wheel and tyre size… | ||
| Scan23 | Applying the die-cast design of crankshaft oil caps from Eagle engines to the 20 HP engine. | ||
| View original record | To DA. from E. Copy to CE. [Struck through] DIT. [Struck through] EFC. [Struck through] [Stamp] ORIGINAL [Stamp] RECEIVED RE DIE CAST CRANKSHAFT OIL CAPS. X.3632. I am informed by Mr. Stent that the… | ||
| Scan24 | Describing the design and proposed manufacturing process for sheet metal terminals. | ||
| View original record | To D.A. from E. Copy to C.L. " E.P.C. " R.W.X.1925 ORIGINAL. RE SHEET METAL TERMINALS. We send you herewith drawing No. Lec.1130 giving particulars of a low and high tension sheet metal terminal to… | ||
| Scan25 | Modified coupling and mounting for the 20 HP magneto drive and strap. | ||
| View original record | To D.A. from E. Copy to CJ. " " BN. " " LH. " " EFC. ORIGINAL. X.3580 RE 20 H.P. MAGNETO DRIVE AND MAGNETO STRAP. E1/G23/8/19. Please find attached drawing No. LeC.1131 shewing a slightly modified… | ||
| Scan26 | Design simplification for the 20 HP oil pump drive. | ||
| View original record | To DA. from E. Copy to CJ. " " BN. " " EH. ORIGINAL. 4 E1/G27/8/19. RE 20 H.P. OIL PUMP DRIVE. X.3610 1919 X.35787 RECEIVED When dealing with the oil pump drive for the 20 H.P. engine, it has been… | ||
| Scan27 | The incorrect tyre valve position on chassis 1 EX and the correct placement procedure. | ||
| View original record | To EH. from R. Copy to CJ. " " BN. " " DA. " " BY. ORIGINAL. RE TYRE VALVE ON 1 EX. x. 2565 It was noticed on 1 EX that the tyre valve was in the wrong position relative to the spokes, to enable the… | ||
| Scan29 | Progress report on the experimental construction and testing of condensers, detailing previous test failures and a new proposed procedure. | ||
| View original record | R.R. 235 A (100 T) (S.F. 575, 16-4-19) G. 2354. To R. from EFC c. to CJ. c. to Bn. c. to EH. c. to Wor. c. to By. ORIGINAL EFC3/T1.8.19. X.2512. - RE PROGRESS OF EXPERIMENTAL CONSTRUCTION OF… | ||
| Scan30 | On condenser testing procedures, discussing issues with 'Stickoline' varnish and potential alternatives. | ||
| View original record | -2- EFC3/T1.8.19. R.R. 235 A (100 T. & S.F. 575, 16-4-19) G. 2354. Contd. 1. Condenser built up in shop but not encased. 2. Tested for 30 minutes on alternating voltage of 200. 3. Tested for 10… | ||
| Scan31 | Typed continuation page of a memorandum or letter, page number 3. | ||
| View original record | R.R. 235 B (200 T) (S.F. 673, 22-5-19) G. 2376 Contd. -3- EFC3/T1.8.19. does not appear to be anything like as thick and heavy. EFC. | ||
| Scan32 | Drawing Lec.1120 for the camshaft drive on a 20 HP chassis, detailing its unitary removal. | ||
| View original record | 20 To EA. [struck-through] from E. Copy to C.C. " " B.H. " " F.H. ORIGINAL E2/G7/8/19. 2 EFC.X.3310 RE CAMSHAFT DRIVE - 20 H.P. CHASSIS. We send you herewith drawing No. Lec.1120 shewing the above.… | ||
| Scan33 | The testing of a new Tudor battery and plans to engage with Chloride for a competing product. | ||
| View original record | To R. from EFC. c. to CJ. c. to Bn. c. to By. ORIGINAL EFC2/T7.8.19. X.664 - BATTERIES. We have recently received three further chassis lighting and starting batteries. TUDOR BATTERY. The new Tudor… | ||
| Scan34 | Continued report evaluating P. & R. and Premier batteries, detailing their physical specifications and performance results. | ||
| View original record | Contd. -2- produce the best results. For the first 250 chassis, the Chloride batteries are now ordered and it does not seem that we can improve upon these at the moment. P. & R. BATTERY. We have… | ||
| Scan35 | Continuation of a report on battery capacity tests. | ||
| View original record | Contd. -3- EFC2/T7.8.19. 40, actual ampere hour capacity obtained 38 at 7.5 amperes. Further tests on above batteries are in progress. EFC. | ||
| Scan36 | Steering gear and front spring fractures during chassis rig testing. | ||
| View original record | R.R. 235A (500 T) (S.D. 408. 26-4-17.) Bm. 2/156/13. To BY. from EH. c. to RH. c. to R. ORIGINAL EH2/LC11.8.19. 11th. Aug. 1919. 5 X.2565 X.3465 X.2628 RH 40/50 HP. CHASSIS. X.344Y We are running a… | ||
| Scan37 | Analysis of a fractured road spring, detailing its chemical composition and Brinell hardness test results. | ||
| View original record | Contd. -2- EH2/LG11.8.19. RE FRACTURED ROAD SPRING. Analysis. Carbon .72% Manganese .42 Chromium .57 Phosphorus .037 Silicon .50 (approx.) The brinell hardness was found to vary considerably on… | ||
| Scan39 | The Smith (T & M) Type 'A' Dynamo. | ||
| View original record | R.R. 235 A (100 T) (S.F. 575, 16-4-19) G. 2354. 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. THE SMITH (T & M) TYPE 'A' DYNAMO. The field carcase of… | ||
| Scan40 | Hand-drawn electrical schematic diagram for a dynamo or motor. | ||
| View original record | R.R. 235 A (100 T) (S.F. 575, 16-4-19) G. 2354. 1a N A+ C R M+ M+7-C S A- R C M+7-C M- | ||
| Scan41 | Description of the generation of P.D. and E.M.F. within the armature and field circuits. | ||
| View original record | R.R. 235 A (100 T) (S.F. 575. 16-4-19) G. 2354. Contd. -2- EFC1/T13.8.19. a P.D. increasing with the speed, was generated between the main brushes which caused an exciting current to flow in the field… | ||
| Scan42 | Description of the operation of a Type A Dynamo, focusing on brush arrangement, resistance circuits, and modifications. | ||
| View original record | Contd. -3- EFC1/T13.8.19. round in the direction of rotation and reduces the E.M.F's acting in the local resistance circuits, so that the currents in these resistances are gradually reduced to zero… | ||
| Scan43 | Description of the current speed characteristic and operation of a dynamo, including magnetisation and brush currents. | ||
| View original record | R.R. 235 A (100 T) (S.F. 575, 16-4-19) G. 2354. Contd. -4- EFC1/T18.8.19. current speed characteristic is rendered nearly flat after its maximum. This has the advantage of increasing that component of… | ||
| Scan44 | Continued page describing the testing of a dynamo, comparing its performance curves to C.A.V. and Lucas dynamos. | ||
| View original record | R.R. 235 A (100 T) (S.F. 575, 16-4-19) G. 2354. Contd. -5- EFC1/T13.8.19. however, quite the same as shewn on that sheet, owing to the way in which the armature winding is carried out, but the… | ||
| Scan45 | Continued analysis of a dynamo's performance under different control schemes and connections. | ||
| View original record | R.R. 285 A (100 T) (S.E. 575. 16-4-19) G. 2354. Contd. -6- EFC1/T13.8.19. in this scheme of control so much of the armature is short-circuited that the voltage is considerably reduced. There results… | ||
| Scan46 | Analysis of cut-out specifications and a comparison of C.A.V., Lucas, and Smith lighting dynamos. | ||
| View original record | Contd. -7- EFC1/T13.8.19. CUT-OUT. Volts on shunt coil to cause cut in at 20° C = 12.2 Amperes = .115 resistance 106 ω Volts to allow contacts to drop apart = 9.95 Amperes . = .094 Reverse amps.… | ||
| Scan47 | New machine from Messrs. Smith for consideration on chassis produced after the first 500 units. | ||
| View original record | Contd. -8- EFC1/T13.8.19. Messrs. Smith have in hand for us a machine upon which they are putting a much more excellent finish. We expect to receive this within the next fortnight. Such a machine… | ||
| Scan48 | Graph of output-speed curves for a Smith (T&M) Type A Dynamo with 4, 5, 6 and 7 cells. | ||
| View original record | AMPERES OUTPUT DYNAMO SPEED (R.P.M.) C. SMITH (T&M) TYPE A DYNAMO As plain shunt wound machine Output - Speed Curves to 4, 5, 6 and 7 fully charged large capacity cells in series. Small figures are… | ||
| Scan49 | Graph of open circuit volt curves for a Smith (T&M) Type A Dynamo. | ||
| View original record | SMITH (T&M) TYPE A DYNAMO Open circuit volt curves Self Excitation (a) As plain shunt machine (c) Controlled VOLTAGE (CURVES A) VOLTAGE (CURVES B) DYNAMO SPEED (R.P.M.) A B (a) (c) 13.5 volts 520 RPM… | ||
| Scan50 | Graph showing the open circuit voltage curves for a Smith (T&M) Type A Dynamo with separate excitation. | ||
| View original record | SMITH (T&M) TYPE A DYNAMO OPEN CIRCUIT VOLTAGE CURVES SEPARATE EXCITATION VOLTS 90 80 70 60 50 40 30 20 10 0 FIELD AMPERES 0 1 2 3 4 5 MAIN VOLTAGE 2500 R.P.M. MAIN VOLTAGE 1500 R.P.M. VOLTAGES… | ||
| Scan51 | Graph showing the performance curves for a Smith (T&M) Type A Dynamo under various cell configurations. | ||
| View original record | SMITH (T&M) TYPE A DYNAMO Curves of Output, Field and Control Currents when supplying 4, 5, 6 and 7 fully charged large capacity cells in series. Small figures are operating voltages. D. CONTROL… | ||
| Scan52 | Diagram of the windings, brushes, and terminals for a Smith (T & M) Dynamo, viewed from the commutator end. | ||
| View original record | THE SMITH (T & M) DYNAMO. 7. + 7+ - N S A- M+ M- A+ 20° Approx. Diagram of windings, brushes, terminals, viewed from commutator end ETc 12/12/21 | ||
| Scan53 | Table of currents at various speeds for a Smith (T & M) Type 'A' Dynamo, including a circuit diagram. | ||
| View original record | R.R. 235 A (100 T) (S.F. 575. 16-4-19) G. 2354. 1.7.19. SMITH (T & M) TYPE 'A' DYNAMO. TABLE OF CURRENTS. Headers: Speed. Main current (M) Field current (F) Control current (C) (handwritten: control… | ||
| Scan54 | Analysis of test results for various lighting dynamos under open circuit conditions. | ||
| View original record | R.R. 235 A (100 T) (S.F. 575, 16-4-19) G. 2354. 1. 1.7.19. ANALYSIS OF RESULTS OF TESTS OF LIGHTING DYNAMOS. A. Open circuit separate excitation. Main Volts. Ex.Curr. C.A.V. Lucas Smith N.C.H.R.… | ||
| Scan55 | Comparison of shunt wound and normal electrical outputs for C.A.V., Lucas, and Smith components. | ||
| View original record | -2- C. Shunt wound output. Speed. C.A.V. Amperes. N.C.A.R. Lucas E.575 Smith Type A. 600 -- -- 2.3 700 1.7 -- 4.6 800 4.3 1.5 6.8 900 6.55 3.8 9.1 1000 8.95 5.7 11.3 1200 12.7 9.7 14.8 1400 15.15 13.4… | ||
| Scan56 | Tabulated report detailing component failures, their operational run time, and associated remarks. | ||
| View original record | SECTION. FAILURES. TIME RUN. REMARKS. SPRINGS. Centre Bolt. 4 hrs. 13 mins. " " 6 " 9 " " " 2 " 29 " " Spring Clips. 1 " 33 " " " 3 " 29 " " " 7 " 59 " " Top Leaves 4 " 12 " Reported material poor. "… | ||
| Scan57 | Alterations to the 20 HP crankcase and oiling system. | ||
| View original record | To Div. from E. (Div. is struck through) copy to CJ. EFC. ORIGINAL. 4 RE 20 H.P. CRANKCASE. X.3536 (struck through) X.3610 I am instructed by Mr. Royce to send you a fore-word of what we are doing… | ||
| Scan59 | Investigation into the causes of piston knocks, identifying alignment and lubrication as the primary factors. | ||
| View original record | To R. from EH. c. to CJ. c. to EN. c. to E. c. to BY. c. to Da. ORIGINAL 2 EH4/LG29.8.19. + extracts 29th. Aug. 1919. RE PISTON KNOCKS. X 2448 We have been investigating to find the reason why on the… | ||
| Scan60 | Technical note on investigating and curing piston knock by adjusting piston alignment and clearance. | ||
| View original record | Contd. -2- sufficient if it is tilted so that most of the clearance is taken up. We have now definitely cured five or six bad knocks by tilting the piston out of line. We have also made pistons which… | ||
| Scan61 | Experiments to eliminate engine knocking, including piston and bearing modifications. | ||
| View original record | R.R. 235 A (100 T) (S F. 575, 16-4-19) G. 2354 Cont'd. 3. EH4/LG29.8.19. ----------------- We are still investigating to see how the out-of-alignment in other directions besides tilting, affect… | ||
| Scan62 | Experiments with different piston designs and lubrication oils to resolve engine knocking issues. | ||
| View original record | Contd. 4. EH4/LG29.8.19. We could not find any appreciable advantage with this. We have another set of pistons in another alloy which have not yet been tried. We have also tried the present pistons… | ||
| Scan63 | Investigations into the causes and solutions for engine piston knock. | ||
| View original record | Contd. 5. EH4/LG29.8.19. proved that if one runs with a definate late ignition, the knocks disappear but no matter how early the ignition is, the knock is still there. We have tried with the ignition… | ||