Rolls-Royce Archives
| Identifier | Entry | ||
| Scan0 | Alternative moulded insulating materials like 'Condensite' and 'Bakelite' for battery ignition coil cases. | ||
| View original record | ORIGINAL. TO R.R. of America Inc. From R. (For the attention of Ex.) Copy to C.L. M EPC. R8/G1/4/21. X. 1109 RE INSULATING MATERIALS. X. 2494 X. 3513 I have obtained several advertisements with… | ||
| Scan1 | Specifying the use of cast iron for the flywheel, clutch pressure plate, and stationary plate for the 'Goshawk II' chassis. | ||
| View original record | To P.A. from E. Copy to C.J. H.S. ORIGINAL E3/02/4/21. X4244. RE "GOSHAWK II" - CAST IRON FLYWHEEL. Referring to the flywheel, clutch pressure plate, and stationary plate for "Goshawk II" chassis, Mr.… | ||
| Scan2 | Material change and manufacturing details for the Goshawk II Cast Iron Flywheel. | ||
| View original record | To-HY. from R. Copy to CS. HCK. HS. DA. EFC. S W WEH. ORIGINAL. RECEIVED x 4244. RE "GOSHAWK II" - CAST IRON FLYWHEEL. In consideration of the fact that we shall be making our own castings, and can… | ||
| Scan3 | Requesting enquiries from various suppliers for a starter motor for the 'Goshawk II' electrical equipment. | ||
| View original record | To LFC. from R. Copy to CS. " " WOR. " " DA. " " HS. " " BY. ORIGINAL. Hs R9/G6/4/21. 1921 RECEIVED X 3534 RE "GOSHAWK II" ELECTRICAL EQUIPMENT. We send you herewith Lec.1373 shewing the scheme we… | ||
| Scan4 | Performance of thick versus thin leaved springs on cars in America. | ||
| View original record | To Ed. from R. Copy to WOR. " " HS. " " HY. x2628 ORIGINAL R1/G7/A/21. 2 HS 8 APR 1921 RE THICK LEAVED SPRINGS FOR CARS IN AMERICA* (CJ/JS8/D11/2/21.) RECEIVED A good deal of the trouble with thick… | ||
| Scan5 | With a sketch, requesting the identification of an unrecognised wooden model received at West Wittering. | ||
| View original record | To D.M. from E. Copy to BN " " BY. " " EFC. ORIGINAL E3/GT/4/21. X2048 RE WOODEN MODEL SENT TO WEST WITTERING. We have received at West Wittering, an unvarnished model in pine of some piece which we… | ||
| Scan6 | Alterations to the Goshawk II engine starter and rear crankcase suspension, referencing associated drawings. | ||
| View original record | To DA. from E. Copy to CD. " " MOR. " " HS. " " HY. " " EFC. ORIGINAL EA/G7/4/21. X.4360 RE ENGINE STARTER AND REAR SUSPENSION OF CRANKCASE. "GOSHAWK II". We send you herewith drawings leC.1371 and… | ||
| Scan7 | Design and fixing of the 'Goshawk II' camshaft bearings with reference to drawing Led.1372. | ||
| View original record | To DA. from E. Copy to... RECEIVED XH229. ORIGINAL. ES/07/4/21. RE "GOSHAWK II" CAMSHAFT BEARINGS. We send you herewith drawing No. Led.1372 shewing the camshaft bearings for "Goshawk II", and the… | ||
| Scan8 | Machine moulding modifications for a Goshawk II bottom half crankcase. | ||
| View original record | to BY. from R. copy to Ed. " " WOH. " " HS. " " DA. " " BPC. Hs ORIGINAL RECEIVED R1/G8/4/21. D 9 APR 1921 RECEIVED X 4220 RE MACHINE MOULDING OF BOTTOM HALF CRANKCASE ("GOSHAWK II") With reference to… | ||
| Scan9 | Sketch and notes for a memo regarding the Goshawk II engine's bottom half crankcase. | ||
| View original record | R/G 7421 ① CROSS WEBS ARE RETAINED ONLY OPPOSITE MAIN BEARINGS Nº (3) & (5) ② THE STRAINER POT IS STOOD ON SIX BOSSES AS SHOWN. EACH BOSS CONTAINS EITHER A PLAIN STUD OR ONE WITH CSK AS IN SKETCH. THE… | ||
| Scan10 | Mr. Royce's requested alterations for the 'GOSHAWK II' rear hub and brake drum. | ||
| View original record | To D.K. from E. Copy to C.V. [STAMP] ORIGINAL E2/G8/4/21. X4257 RE "GOSHAWK II" - REAR HUB AND BRAKE DRUM. Referring to your Scheme N.809, would you kindly note Mr. Royce would like the following… | ||
| Scan11 | Modifications to the Goshawk I and II equalising brake components. | ||
| View original record | To D.A. from E. Copy to C.J. (Struck through) " " WCR. (Struck through) " " HS. (Struck through) " " DY. (Struck through) " " EFG. (Struck through) ORIGINAL (Stamp) RECEIVED (Stamp) X3606 RE "GOSHAWK… | ||
| Scan12 | Proposal from Mr. Royce for machining the 'Goshawk II' camshaft bearings without using extra cast-on wings. | ||
| View original record | To WS. from E. Copy to CC. X4229 RE "GOSHAWK II" CAMSHAFT BEARINGS. We send you herewith Lec.1374 showing Mr. Royce 's proposal for machining the "Goshawk II" camshaft bearings without using the extra… | ||
| Scan13 | Further details for the 'Goshawk' petrol tank and spare wheel carrier. | ||
| View original record | To Dk. from E. Copy to Cdv " WOR. " HS. " DX " ENG. Hs ORIGINAL RECEIVED APR 11 1921 E1/G9/4/21. 1 x x4266 RE "GOSHAWK" FURTHER DETAILS OF PETROL TANK x4085.- AND SPARE WHEEL CARRIER. We send you… | ||
| Scan14 | The camshaft timing for the Goshawk II engine, detailing indicating devices and permissible errors. | ||
| View original record | To DA. from E. Copy to Col. " " HS. X4229 RE "GOSHAWK II" - CAMSHAFT TIMING. We attach herewith drawing Lec.1377 giving details of some indicating devices which will be required on the wheelcase.… | ||
| Scan15 | Modifications to the Goshawk II lower half crankcase. | ||
| View original record | 2 To WOR. from E. Copy to DA. (Struck through) " " HS. ORIGINAL E6/G9/4/21. 11 APR 1921 RECEIVED X4220. RE "GOSHAWK II" - LOWER HALF CRANKCASE. In reply to your memo WOR3/M7/4/21, the instructions re… | ||
| Scan16 | Comparative analysis and testing proposal for various magneto models. | ||
| View original record | To EFC. from R. Copy to CJ. " " WOR. " " BY. " " HS. " " DA. " " PN. " " LP. " " HM. ORIGINAL X 2375 (crossed out) X 4181 (crossed out) X 4210 X 427 (crossed out) X 3724 X 3916 (crossed out) X 3917… | ||
| Scan17 | Cover note regarding notes, corrected by Mr. Royce, about a visit to West Wittering. | ||
| View original record | To HS. } from E. " DA. } Copy to CJ. " " BJ. " " WOR. " " BY. " " WD. " " EFC. ORIGINAL E7/G11/4/21. RE VISIT OF MESSRS. HIVES AND DAY TO WEST WITTERING ON 6 EX, 12th MARCH, 1921. We send you herewith… | ||
| Scan18 | Index for a report on a visit to West Wittering concerning various vehicle components. | ||
| View original record | To HS.) from E. Copy to CJ. " " BJ. " " WOR. " " BY. " " WD. " " EFC. RE VISIT OF MESSRS. HIVES AND DAY TO WEST WITTERING ON 6 EX - 12th MARCH, 1921. [STAMP] RECEIVED 13 APR 1921 ITEM. INDEX. SECTION.… | ||
| Scan19 | Proposed design modifications for the 40/50 HP Distribution Board and Tyre Pump. | ||
| View original record | To HS. ) from E. " DA. ) Copy to CJ. " " BJ. " " WOR. " " BY. " " WD. " " EFC. RE VISIT OF MESSRS. HIVES AND DAY TO WEST WITTERING. ON 6 EX - 12th MARCH, 1921. (1) 40/50 H.P. DISTRIBUTION BOARD. X4173… | ||
| Scan20 | Design decisions for 40/50 HP and Goshawk models, covering components like axles, insulation, and bodywork. | ||
| View original record | To HS. & DA. from E. -2- E4/G31/3/21 Contd. (3) 40/50 H.P. INSTRUMENT BOARD. Countersunk screws with spherical faces should be used for fixing all instruments to the instrument board, in accordance… | ||
| Scan21 | Design considerations for the Goshawk II's carburettor, axles, petrol gauge, and electrical system. | ||
| View original record | To HS. & DA. from E. -3- (10) "GOSHAWK II" CARBURETTOR CONTROL. The "Goshawk II" carburettor control is arranged so that the pilot jet opens first and is fully open at half stroke of the hand control.… | ||
| Scan22 | Design and manufacturing considerations for various automotive components including starters, steering, batteries, and clutches. | ||
| View original record | To HS. & DA. from E. -4- E4/G31/3/21 Contd. (15) "GOSHAWK II" STARTER. The thread for the Bendix pinion should be without much surface cut too deep so as to get out of contact. This should avoid the… | ||
| Scan23 | List of modifications relating to the Goshawk IIA flywheel casing, flywheel, and model pointer. | ||
| View original record | To DA. from E. X4244 RE "GOSHAWK IIA - FLYWHEEL CASING, FLYWHEEL & MODEL POINTER. We send you herewith drawing LeC.1381 dealing with the above. We would draw your attention to the following… | ||
| Scan24 | Final design drawing for the Goshawk II Landaulet body. | ||
| View original record | ORIGINAL RECEIVED APR 11 1921 To D.A. from E. Copy to CD. " HS. " BT. " HPO. X3730 E2/G11/4/21. RE "GOSHAWK II" LANDAULET BODY. We send you herewith the original drawing of Lec.1359. This shews the… | ||
| Scan25 | Cause of battery discharge, suggesting improved accumulator cells over increasing dynamo capacity. | ||
| View original record | To EFC. from R. Copy to CJ. " " BY. (crossed out) " " HS. (crossed out) " " EP. (crossed out) " " PN. (crossed out) " " R.R. of America Inc. (For the attention of OY.) ORIGINAL X.664 RE ACCUMULATORS.… | ||
| Scan26 | Pre-ignitions caused by dual battery and magneto ignition systems. | ||
| View original record | To EFC. from R. Copy to CJ. HS ORIGINAL. R9/G11/4/2D. 12 APR 1921 X.3199✓ X.3129 RE BATTERY IGNITION. X.918 X.3445 RECEIVED It has occurred to me that the reason we get pre-ignitions by mutual… | ||
| Scan27 | Failure of U.S.A. Bosch magnetos and considering alternatives, including the sleeve type. | ||
| View original record | To EFC. from R. Copy to CJ. [Struck through] " " HS. [Struck through] " " PN. [Struck through] ORIGINAL. [Stamped] RECEIVED APR 13 1921 [Stamped] RE MAGNETOS. X.430! X.3916. X.4181. X.3917. X.3515.… | ||
| Scan28 | Material choice for a cap related to the lubrication of front pivots on a 40/50 HP chassis. | ||
| View original record | To HS. from R. Copy to CJ. " " DA. [text struck through] " " BV. [text struck through] x 1148 x 3441 ORIGINAL 2 R1/G11/4/21. RE 40/50 H.P. CHASSIS - LUBRICATION OF FRONT PIVOTS. With reference to your… | ||
| Scan29 | 'Goshawk II' dynamo straps and cradle, referencing drawing No. Lec.1380. | ||
| View original record | To-Ht. from E. Copy to [Illegible] XH076 ORIGINAL EG/GIA/4/21. RE "GOSHAWK II" DYNAMO STRAPS AND CRADLE. We send you herewith drawing No. Lec.1380 showing the above. The large dowel pin engaging with… | ||
| Scan30 | Design modifications for the Goshawk II propeller shaft and couplings. | ||
| View original record | To. Dm. From E. Copy to Cd. BY R.C. X42524 X4255 ORIGINAL EB/G14/4/21. RE "GOSHAWK II" - PROPELLER SHAFT AND COUPLINGS. We send you herewith drawing Lec.1382 in reply to your scheme dealing with the… | ||
| Scan31 | Examination of an old Willard battery cell, with recommendations for further testing. | ||
| View original record | To EFC. from R. Copy to OJ. " " HS. " " DY. " " PN. " " R.R. of America. Inc. (For the attention of OY.) ORIGINAL R8/G14/4/21. X.1198 RE WILLARD BATTERY. Thank you for sending me the old Willard cell… | ||
| Scan32 | Pattern of a cell for an electrical starter. | ||
| View original record | To EFC. from R. -2- R8/G14/4/21 Contd. cell sent has no such cavity. The cell sent, however, may be of a still earlier pattern, and perhaps one of the first we had over from the States when we decided… | ||
| Scan33 | Introduction of Stabilite moulding for switch barrels to save time and money. | ||
| View original record | To US. from R. Copy to WGR. " " EFC. ORIGINAL (BELDA LITE) R7/C14/4/21. (13) X.4287 RE STABILITE MOULDING OF SWITCH BARREL. X.3513 X.2494 With reference to the stabilite moulding as carried out at our… | ||
| Scan34 | Experimental change to the thermostat location to reduce hunting. | ||
| View original record | To HS. from R. [struck through] Copy to C.J. [struck through] " EFC. ORIGINAL. R4/G14/4/21. x3456 x3902 RE THERMOSTATIC CONTROL. X3563 On some previous occasions you reported that this apparatus… | ||
| Scan35 | Sheet that details the design work status for the 'Goshawk II' chassis. | ||
| View original record | ORIGINAL. To WOH. from E. Copy to [text scribbled out] EPC. X4219 RE "GOSHAWK II". We send herewith a sheet showing the condition of the design work for "Goshawk II" chassis. Any item that is marked… | ||
| Scan36 | Proposal for a breather and oil filler to prevent engine fumes from getting into closed bodies. | ||
| View original record | To DR. from E. Copy to CC. " " HS. " " RY. " " E.C. ORIGINAL. RECEIVED 21 APR 1921 x E1/G19/4/21. X.4220 RE "GOSHAWK II" BREATHER AND OIL FILLER. MR. ROYCE has made a proposal which he thinks might… | ||
| Scan37 | Abandonment of a combined oil filler and breather scheme for an alternative separate design on the GOS II engine. | ||
| View original record | E1/G19421 < 2” .750” SINCE WRITING MEMO E1/G19421 IT HAS BEEN FOUND NECESSARY TO ABANDON THE ABOVE COMBINED SCHEME OF OIL FILLER & BREATHER ON GOS II OWING TO OTHER FEATURES ON THE ENGINE & TRY AN… | ||
| Scan38 | Design of a 40/50 HP hot spot induction pipe, specifically regarding the material and continuity of the steel branch pipe. | ||
| View original record | To HS. from E. Copy to CJ. " " BY. " " DA. ORIGINAL 2 E6/G22/4/21. X4305. RE 40/50 H.P. HOT SPOT INDUCTION PIPE. In reply to your memo HS2/LG20/4/21, would you kindly note that the steel branch pipe… | ||
| Scan39 | Design of the 'Goshawk II' engine's radiator and suspension system. | ||
| View original record | To DR. from E. Copy to C.T. (crossed out) " " HS. (crossed out) " " HY. (crossed out) " " FBC. (crossed out) X42-40 ORIGINAL (stamp) RE "GOSHAWK II" RADIATOR AND SUSPENSION. We send you herewith… | ||
| Scan40 | Cover letter sending drawing Lec.1384 for the 'Goshawk II' oil filler and breather. | ||
| View original record | To DH. from E. Copy to Gd. " DY. " HB. " RMG. X 390R X 405 ORIGINAL. E2/G23/4/21. + RE "GOSHAWK II" - OIL FILLER AND BREATHER. We send you herewith drawing Lec.1384 showing the above. Hs Z. RECEIVED… | ||
| Scan41 | Design suggestions for the 'Goshawk II' Gear Box, featuring Mr. Royce's feedback. | ||
| View original record | 2 To Mr. [redacted] from E. Copy to [redacted] [redacted] HB. X4247 ORIGINAL E2/G25/4/21. RE "GOSHAWK II" GEAR BOX. RECEIVED In reply to the first paragraph of your memo BY12/F21/4/21 re Lec.1349, Mr.… | ||
| Scan42 | Design modifications for the 'Goshawk II' rear springs and fittings. | ||
| View original record | To BY. from E. copy to CG. " " HB. ORIGINAL EL/G25/4/21. 2 XHR 62 RE "GOSHAWK II" REAR SPRINGS AND FITTINGS: In reply to your memo BY/P22/4/21, kindly note Mr. Royce would like to adopt the suggestion… | ||
| Scan43 | Policy document discussing the fitting of thermostats to American versus European cars, comparing bypass systems and shutters. | ||
| View original record | Handwritten Top: R: philosophy on THERMOSTATS - BYPASS or SHUTTERS ORIGINAL. 40/50 POLICY HS/D25/4/21. R^a Springfield Derby To H.I. from R. Copy to R.A.H. H.S.L. H.S. ✓ (For the attention of C.Y.)… | ||
| Scan44 | Design change to the front axle spring pad for the 'Goshawk II'. | ||
| View original record | x4263 To EY. from R. [Strikethrough: Copy to C?.] [Strikethrough: " " DA] [Strikethrough: " " HS.] STAMP: ORIGINAL. R7/G25/4/21. RE "GOSHAWK II" - FRONT AXLE. X.4372 With reference to the front axle… | ||
| Scan45 | Performance of Watford magnetos and their relation to misfiring issues caused by spark plugs. | ||
| View original record | To EPG. from R. Copy to CJ. " " HS. " " RP. " " HM. " " PN. " " OY. " " BJ. ORIGINAL R15/G25/4/21. X430 RE MAGNETOS. x2375 x4279 x481 x1812 In PN's report (PN3/DB19/4/21) concerning Mr.Houderb, it… | ||
| Scan46 | Use of the 'Alemite' screw syringe grease system for the 'Goshawk II' chassis lubrication. | ||
| View original record | To DA. from E. Copy to Co. " " HS. " " BY " " E.O. X433) X4249. ORIGINAL. E3/G25/4/21. RE "GOSHAWK II" CHASSIS LUBRICATION. In connection with "Goshawk II", kindly note that for those parts which… | ||
| Scan47 | Requirements and process for producing 'Formite' and bakelite mouldings. | ||
| View original record | To WD. From R. Copy to E.I. W OR H H.L. EFC. WO. ORIGINAL R7/027/4/21. RECEIVED APR 29 X.2494 X.3513 RE INSULATING MATERIAL. Thank you for finding out particulars of the "Formite" mouldings. The… | ||
| Scan48 | Technical memorandum discussing methods for achieving a silent dynamo by adjusting the number of teeth and pole span. | ||
| View original record | To EFC. from R. Copy to GJ ORIGINAL. X294 RE SINGING DYNAMOS. X1005 X4383 R9/G27/4/21. It is interesting to hear that my anticipations of an even number of teeth and even span of poles results in a… | ||
| Scan49 | Performance figures and dynamo specifications compared to the 40/50 model. | ||
| View original record | To EFC. from R. -2- R9/G27/4/21 Contd. The figures I gave you for this were that its characteristic would be at the same road speed as the 40/50, and consequently the curve of performance would permit… | ||
| Scan50 | Alternative methods for fixing the brake quadrant on the Goshawk II gearbox, comparing studs and nuts with bolts. | ||
| View original record | To DY from R. Copy to SY " " HS. ORIGINAL 2 R4/G27/4/21. RECEIVED APR 29 1929 XL247 RE "GOSHAWK II" - GEAR BOX. With reference to your suggestion of fixing the brake quadrant by studs and nuts, this… | ||
| Scan51 | Positioning of the spare wheel to prevent fouling on the car's hood. | ||
| View original record | TO SP. from R. Copy to CJ. " " HS. " " DA. " " BV. X3683 ORIGINAL. 2 R6/G27/4/23 (RECEIVED 29 APR 1921) RE POSITION OF SPARE WHEEL. We have carefully considered placing the spare wheel in all… | ||
| Scan52 | Investigation into 'Formite' and bakelite mouldings, outlining the need for a steam-heated hydraulic press and assigning tasks for further research. | ||
| View original record | To-WD. From R. Copy to Cd. " " HS. " " HY. " " HL. " " EPC. " " MS. ORIGINAL X 3573 RE INSULATING MATERIAL. Thank you for finding out particulars of the "Formite" mouldings.. The matter is now… | ||
| Scan53 | Drawing Lec.1357 for the 'Goshawk II' revised pedal, steering column, and driver's seat positions. | ||
| View original record | To DA. from E. Copy to C.D. x S. x H.S. ORIGINAL. EL/G27/4/21. x 4267 x 4264 RE "GOSHAWK II" REVISED PEDAL, STEERING COLUMN, AND DRIVER'S SEAT POSITIONS. We send you herewith drawing No. Lec.1357… | ||
| Scan54 | Modifications to the 40/50 HP clutch mechanism for N. Series chassis. | ||
| View original record | To DA. from E. Copy to CJ. " " HS. " " BY. (struck through) " " EHO. (struck through) x3339 x3933 ORIGINAL. RE 40/50 H.P. CLUTCH MECHANISM. Referring to the Clutch Mechanism shewn on drawing F.6723… | ||
| Scan55 | Failed 'Champion' sparking plug from a lighting engine at West Wittering. | ||
| View original record | To HS. from E. Copy to CJ. x4196 ORIGINAL E5/G29/4/21. RE "CHAMPION" SPARKING PLUGS. We send you herewith, inaccordance with Mr. Royce's instructions, a "Champion" sparking plug that failed in the… | ||
| Scan56 | Schemes for connecting the crankcase breather to the carburettor intake to manage fumes. | ||
| View original record | To HS. from DA. ORIGINAL 2. DA6/G29/4/21. x3908 RE FUMES IN BODIES. I have discussed the question of the temporary fitting which you made for connecting the breather to the carburettor intake, and… | ||
| Scan57 | Alterations to the pedal scheme for the 'Goshawk II' chassis, specifically for 'B' and 'D' type positions. | ||
| View original record | To DA. from E. Copy to C.J. [struck through] NV [struck through] H.S. [struck through] ORIGINAL. E1/G30/4/21. X X4267 RE 'GOSHAWK II'- 'D' TYPE PEDALS. We send you herewith drawing No.C.1385 showing… | ||
| Scan58 | Drawing L.c.2388 for the 'Goshawk II' fan and bracket. | ||
| View original record | To D.A. from E. Copy - C.T. [Struck through] " - R.W.H. [Struck through] " - S.B. [Struck through] " - E.O. [Struck through] ORIGINAL. x4237 RE "GOSHAWK II" - FAN AND BRACKET. Herewith please receive… | ||
| Scan59 | The heating tests of a Rotax dynamo, comparing its performance against Smith and Lucas models. | ||
| View original record | To R. A. R. from [REDACTED] c. to GJ. & PN. c. to Bm. & By. c. to Da. & EP. c. to HMI. for R.R.Inc. ORIGINAL EFC4/T1.4.21 X.1005 - ROTAX DYNAMO - HEATING TESTS. X.3936 The result of the heating test… | ||
| Scan60 | Continued report discussing the insufficient output of dynamos based on the maker's settings. | ||
| View original record | Contd. -2- less in the final condition than that of the other two dynamos. The Maker's setting was apparently the one that would give the maximum possible output without undue heating but this output… | ||
| Scan61 | Assessment report on the good and bad points of a De Martis accumulator. | ||
| View original record | To R. & E. from EFC. c. CJ. & BJ. c. PN. c. By. & Bn. c. Da. & EP. c. EWT. for R.R.Inc. ORIGINAL. EFC2/T6.4.21. X.3629 - RE DE MARTIS ACCUMULATOR. This battery was received by us on February 22nd, and… | ||
| Scan62 | Battery performance tests, including discharge capacity, pricing, and weight comparisons. | ||
| View original record | Contd. -2- EFC2/T6.4.21. can be made in the material with the finger, we find this not to occur. 10. As regards actual tests, this battery is being put through our usual routine tests and up to the… | ||
| Scan63 | Introducing an attached report on tungsten contacts as affected by current density. | ||
| View original record | ORIGINAL To R. & E from EFC. c. to CJ. & PN. c. EWT. for R.R.Inc. EFC5/T7.4.21 X.2894 - TUNGSTEN POINTS. Attached please find report of my assistant on Tungsten contacts as affected by current… | ||
| Scan64 | Comparison of current effects on tungsten contact points in various ignition systems. | ||
| View original record | EFC. AA53 88304. 5.4.21. X.2894 - TUNGSTEN CONTACT POINTS. With regard to remarks made from American to the effect that the current in tungsten contact points should not be too high, it is noteworthy… | ||
| Scan65 | Cause and cure for sparking failure in distributors with tungsten contacts. | ||
| View original record | -2- Contd. As in normal running on the R.R. distributor with tungsten contacts, metal is transferred from one point to the other, it seems probable that sparking is the cause of failure. This sparking… | ||
| Scan66 | Technical discussion and comparison of various magneto models, their performance, weight, and reliability. | ||
| View original record | To H. from RFC. c. to GJ. c. to R. ORIGINAL EFCR/TS.4.21. X.480 - MAGNETOS - REF: R1/CRH.3.21. x2375/x4279 x3916/x3917 (handwritten) "Have since noticed Watford (standard HS) appear to have their… | ||
| Scan67 | New type of Lucas electrical cut-out with a compound magnetic circuit, including a schematic diagram. | ||
| View original record | R.R. 235A (50 T) (S H. 986, 19-2-21) G 3008 ORIGINAL To R.A & K. from EFC. c. CJ. & PN. c. Ev. & Bn. c. Da. & EP. EFC?/T9.4.21. X.4349 - NEW TYPE LUCAS CUT-OUT WITH COMPOUND MAGNETIC CIRCUIT. When Mr.… | ||
| Scan68 | Description of the operational speciality of an instrument's compound magnetic circuit and cut-out mechanism. | ||
| View original record | Contd. -2- EFC2/T3. 4. 21. The speciality of the instrument, however, is that the magnetic circuit is compound and that the movable element is pivoted over the top of the central leg of a three-legged… | ||
| Scan69 | Evaluation of a submitted cut-out model, detailing its performance under cold and hot conditions against specification. | ||
| View original record | Contd. -3- EPC/S/19.4.21. The size of the model submitted to us is not large enough to satisfactorily overcome the variations of cutting in point due to temperature rise, and does not, for this… | ||
| Scan70 | The Smith Type 2D Dynamo with R.R. modifications, specifically dynamo number 2083. | ||
| View original record | To R. & E. from EPC. c. CJ. & FN. c. By. & Rn. c. Da. & EP. c. EWT. for R.R.Inc. ORIGINAL X.295 - SMITH TYPE 2D DYNAMO WITH R.R.MODIFICATIONS. We have recently received from Messrs. Smith a second… | ||
| Scan71 | Dynamo performance against specification, including price, weight, and plans for further testing. | ||
| View original record | Contd. -2- this at the expense of a slight alteration to the cutting in point, which makes the output curve not quite comply with our specified performance, the extent of non-compliance being shown on… | ||
| Scan73 | Cover letter for a preliminary report on a U.S.A. Bosch type D.U.Z.6 magneto. | ||
| View original record | To R. & E. from EFC. c. to CJ. & PN. c. to By. & Bn. c. to Da. & EP. c. to EWT. for R.R.Inc. ORIGINAL. EFC6/Y15.4.21. X.4285 - U.S.A. BOSCH TYPE D.U.Z.6 MAGNETO. Herewith please receive copy of my… | ||
| Scan74 | Preliminary report on the U.S.A. Bosch Magneto D.U.Z.6, comparing it to the Z.R.6 model. | ||
| View original record | RR 300 (120B) (SF 349 24-1-19) MP 200552 91298 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To E.F.C. Order No. P.A. 73 Customer's No. Re X 4285 March 30th 1921 Preliminary Report on U.S.A. Bosch Magneto… | ||
| Scan75 | Instructions regarding a slip joint connection on a brush holder and other component differences from the Z.R.6 model. | ||
| View original record | RR 300 (120B) (SF 349 24-1-19) MP 200552 91299 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To E.F.C. Order No. P.A. 73. Re X 4285. Customer's No. Date: March 30th 1921 Main text: a slip joint connection to a… | ||
| Scan76 | The trial of sample tungsten contacts for a magneto contact breaker, noting they are not equivalent to platinum. | ||
| View original record | & E. To R. from EFC. c. CJ. & PN. c. Da. & EP. c. By. & Bn. c. EWT. for R.R.Inc. ORIGINAL. EFC3/T15.4.21. X.2894 - SAMPLE TUNGSTEN CONTACTS FOR MAGNETO CONTACT BREAKER. Herewith please receive copy of… | ||
| Scan77 | Test report on sample tungsten contacts from Messrs Blackwell. | ||
| View original record | RR 300 (120B) (SF 349 24-1-19) MP 200552 91303 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To E.F.C Order No. P.A.75. Re X. 2894. Customer's No. April 13th 1921 Test of Sample Tungsten Contacts from Messrs… | ||
| Scan78 | Engine misfiring issues related to spark gaps and worn contacts. | ||
| View original record | RR 300 (120B) (SF 349 24-1-19) MP 200552 91304 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To E.F.C. Order No. P.A. 75. Customer's No. Re X. 2894. After 70 hrs, missing occurred on the spark gaps, which was… | ||
| Scan79 | Instruction sheet with handwritten notes on the condition of a part, noting light pitting and grey oxide. | ||
| View original record | RR 300 (120B) (SF 349 24-1-19) MP 200552 91305 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To E.F.C. Order No. P.A.75. Customer's No. Re. X.2894. April. 13th 1921 Appeared to be hardly touched. Both surfaces… | ||
| Scan80 | Receipt of Berling magnetos from the U.S.A. and the decision not to test them. | ||
| View original record | To R & E. from EFC. c. CJ. & PN. c. Da & EP. c. By. & Bn. c. EWT. for R. R. Inc. ORIGINAL. EFC2/T15.4.21. X.3723 - BERLING MAGNETOS. Amongst the magnetos received from U.S.A. for test were three of… | ||
| Scan81 | Different types of Berling magnetos. | ||
| View original record | RR 300 (120B) (SF 349 24-1-19) MP 200552 ROLLS-ROYCE LIMITED. INSTRUCTIONS. 91300 To E.F.G. Order No. P.A. 74. Re X 3723. Customer's No. April. 2nd. 1921 Report on Berling Magnetos, Types D63. F61.… | ||
| Scan82 | Design and features of F and E type magnetos. | ||
| View original record | RR 300 (120B) (SF 349 24-1-19) MP 200552 91301 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To E.F.C. Order No P.A. 74 Customer's No. Re X 3723 probably not be adopted as at present designed. On the other hand,… | ||
| Scan83 | Instruction memo discussing distributor and cam-ring design following an endurance test. | ||
| View original record | RR 300 (120B) (SF 349 24-1-19) MP 200552 91302 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To E.F.C. Order No P.A. 74. Customer's No. Re X 3723. April 2.nd 1921 of that machine, after its endurance test, this… | ||
| Scan84 | Clarifying the origin of a Willard battery cell sent for examination. | ||
| View original record | To R. from EFC. ORIGINAL EFC2/T16.4.21. c.c. CJ. c.c. FH. c.c. Wy. c.c. EWH. for R.R.Inc. .X.1195 - WILLARD BATTERY. We have your note E6/G14.4.21. We are sorry to have given you the impression that… | ||
| Scan85 | Investigation into the winding of a Rotax dynamo armature. | ||
| View original record | To R. from EFC. c. CJ c. PN. c. Da. c. By. EFC3/T16.4.21. X.1005 - ROTAX DYNAMO ARMATURE. X.1640. We have now investigated the winding of this armature which has been possible merely by removing the… | ||
| Scan86 | Testing and comparison of C.A.V. Willard Thread Rubber batteries against Exide batteries. | ||
| View original record | ORIGINAL. To R. & E. from EPC. c. CJ. & PM. c. Da. & RP. c. Ev. & En. c. Ent. for R.R.Inc. X.4283 - C.A.V. WILLARD THREAD RUBBER BATTERY. We have now received three sample batteries of this type from… | ||
| Scan87 | Continued page of a document discussing a request for a sample battery with alterations. | ||
| View original record | Contd. -2- EFC1/T16.4.21. either by letter or perhaps verbally, to supply us with a further sample battery in which such minor alterations as we should require have been effected. EFC. | ||
| Scan88 | The receipt and testing of two different Smith cutouts for experimental cars. | ||
| View original record | To R. & E. from EFC c. CJ. & PM. c. Ds/ & EP. c. Ey. & Bn. c. EWI. for R.R.Inc. ORIGINAL X.3771 - SMITH CUTOUTS. - We have recently received from Messrs. Smith, in accordance with an order placed with… | ||
| Scan89 | Analysis of Smith cutout operation under varying temperature and battery conditions. | ||
| View original record | Contd. -2- EPC4/T18.4.21. variation and battery E.M.F. variation. We have tried to prove whether this has been due to retentivity in the magnetic circuit, but so far as we have been able to ascertain,… | ||
| Scan90 | Continued report discussing the performance and reliability of various cutout instruments, specifically the Smith cutout and No.7914. | ||
| View original record | Contd. -3- EFC4/T18.4.21. falls just within our limit, whereas the other instrument under the same temperature condition is later than the limits we specify. In every case the reverse series amperes… | ||
| Scan91 | Investigation report into the cause of 'singing' noise from a Rotax A.T.12 dynamo. | ||
| View original record | R.R.C.(T 02) H 211 (10-3-21) C 3008 To R. from EFC. c. CJ. & PH. c. Ey. & Bn. c. De. ORIGINAL. EFC12/T19.4.21. X.294 - SINGING OF DYNAMOS (WITH PARTICULAR X.100B. REFERENCE TO ROTAX AT.12 DYNAMO) with… | ||
| Scan93 | Summary regarding the performance of Lucas E.375 dynamos for the 40/50 and Goshawk chassis. | ||
| View original record | To By. from EFC. " En. " " Da. " " E. " " C. " " Hy. " " Hm. " " Hs. " " OJ. " " RJ. " " PN. " " EP. " To R. " EWT. for R.R.Inc. " Wor. " RG. ORIGINAL. EFC4/T21.4.21. SUMMARY OF POSITION OF ELECTRICAL… | ||
| Scan94 | Comparison and evaluation of different dynamo models, including the Lucas E.575, for vehicle use. | ||
| View original record | Contd. -2- The balancing speed above mentioned corresponds, with a suitable belt drive ratio of 1.56, to an R.P.M. of the dynamo of 540. The corresponding figure for the cold condition would then come… | ||
| Scan95 | Evaluation and modification of various Lucas dynamo models. | ||
| View original record | Contd. -3- at low speeds would amply comply with our requirements, but it would not have the falling off of current at high speeds such as we think is right, and further, would be subject to a certain… | ||
| Scan96 | The Smith 2D Dynamo, including performance evaluation, specifications, and comparison with alternatives. | ||
| View original record | Contd. -4- EEC4/T21.4.21. Smith 2D Dynamo. For some considerable time now we have been experimenting with type 2D dynamos made by Messrs. Smith, and a number of these have been fitted and run on… | ||
| Scan97 | Comparison of various electrical components including cutouts and dynamos from Smith, Lucas, C.A.V., and Rotax. | ||
| View original record | R.R. 235A^(100 T)/S H. 798. 10-12-20) G. 2947 Contd. -5- EFC4/T21.4.21. Quoted price of the Smith cutout £1.13.9. Quoted price of the Lucas cutout 12.6d., but this does not include the case and… | ||
| Scan98 | The performance, cost, and design of an experimental dynamo, including feedback from Mr. Royce. | ||
| View original record | Contd. -6- KPC4/T21.4.21. Although this particular machine has a very early cutting in point, and in this respect satisfies our specification perhaps too readily, nevertheless the output in the hot… | ||
| Scan99 | Comparison of Rotax and Smith dynamos being considered for a 'Small Car'. | ||
| View original record | R.R. 286A (100 T) (S H. 798, 10-12-20) G. 2947 Contd. -7- EFC4/T21.4.21. Dynamo for Small Car. There is a smaller Rotax dynamo than the A.T.12 listed, namely, A.I.4 or called A.I.8 if with flange… | ||
| Scan100 | Evaluation of two head light dimming devices: a C.A.V. series parallel switch and a 'Rex' head light controller. | ||
| View original record | & E To R. from EFC. c. CJ. & PN. c. By. & Bn. c. Da. & EP. c. EWT. for R.R.Inc. ORIGINAL X.4291 - HEAD LIGHT DIMMERS. AND IN PARTICULAR X.4243 - C.A.V. SERIES PARALLEL DIMMER SWITCH. X.4344 - "REX"… | ||
| Scan101 | The working of a headlamp controller, comparing different dimming methods. | ||
| View original record | Contd. -2- EFC3/T22.4.21. For further report on the working of the controller see attached sheet. It will be seen from this that the controller would apparently be better if the contained resistance… | ||
| Scan102 | The performance and suitability of a 'REX' headlight controller with various lamp configurations. | ||
| View original record | R.R. 235A (50 T) (S.H. 986. 10-2-21) G. 8008 95211. EFC. 15.4.21. X.4344 - "REX" HEADLIGHT CONTROLLER. The total resistance of this controller is 9.4 ohms. It is suitable for a single O.M.F. lamp… | ||