Rolls-Royce Archives
| Identifier | Entry | ||
| Scan0 | Print LEC-1359 for a Goshawk II Landaulet Body and running board specifications. | ||
| View original record | Dept from E CJ Ceh X.3730 ORIGINAL RECEIVED E3 / 3-3-21 2 X.3730 GOSHAWK II LANDAULET BODY We send you herewith the print of LEC-1359 showing revised landaulet body for GOSHAWK II The running boards… | ||
| Scan1 | Modifications for the Goshawk I foot brake adjustment countershaft. | ||
| View original record | Date (crossed out) ECJ CLK X.3605 Hs 1921 ORIGINAL RECEIVED MAR E4 / 3-3-21 2 GOSHAWK I FOOT BRAKE ADJUSTMENT COUNTERSHAFT Kindly note the following modifications which Mr Royce would like made to N… | ||
| Scan2 | Design modification notes and sketches for various mechanical components. | ||
| View original record | E4 / 3-3-21 5) The tube boss on the countershaft should be a push portion to suit hand forging and should be made plenty in length so as to stand more than working when tight on the countershaft &… | ||
| Scan3 | Goshawk II Brake Gear, proposing the deletion of an unnecessary adjustment on the rear axle mechanism pull rods. | ||
| View original record | X.4257 Da. ORIGINALE 2 / 3/3/21 2 RECEIVED MAR 4 Da from E c CJ c CLK X.4257 GOSHAWK II BRAKE GEAR We send you herewith LEC-1355 showing general scheme for remainder of brake gear. It is now thought… | ||
| Scan4 | Simplification of the front shock absorber connecting rod design for the 40/50 chassis. | ||
| View original record | By. from E. c. Da. c. CJ. ORIGINAL E7/3.3.21. X.4396. X.3461. 40/50 CHASSIS -FRONT SHOCK ABSORBER CON ROD X.3429. In reply to your query concerning the difficulty of making part No.7470 and your… | ||
| Scan5 | Memo detailing five remarks from Mr. Royce on the Brake Gear N Y/62. | ||
| View original record | ORIGINAL Hs RECEIVED MAR 1 1921 To Da from E et CJ et CIK m'C GOS EO x.3568 E1 / 4/3/21 2 GOSFORK I - BRAKE GEAR - N Y/62 Kindly vet the following remarks Mr Royce wishes on a pencil confirming the… | ||
| Scan6 | With a sketch proposing a change to the manufacturing process for a Goshawk II front dumb iron. | ||
| View original record | To D. from E To CJ to CLK ORIGINAL x 1093 x-4260 GOSHAWK II FRONT DUMB IRON E3/5321 3. Referring to N.Scheme. 755. You refer to, on memo E1/G 27121 you will find that the item portion of the dumb iron… | ||
| Scan7 | Drawings for the Goshawk II oil pump and filter. | ||
| View original record | To Da from E (crossed out) I C/T (crossed out) F. CIR. X.4232 ORIGINAL (stamp) GOSHAWK II - OIL PUMP. & FILTER We send you herewith drawings LoC 1361 & 1362 dealing with the oil pump & oil filter &… | ||
| Scan8 | Outlining two requested modifications for the Goshawk II front spring shackle. | ||
| View original record | To D.O. from E F.C.J c Clk ORIGINAL x 4261 E1/3-3-21 2 GOSHAWK II - FRONT SPRING SHACKLE This scheme may now be instructed after incorporating the following two points which Mr Royce desires:- 1) The… | ||
| Scan9 | Dispatch of a blueprint for the Goshawk II front spring shackle. | ||
| View original record | To DA. from E. Copy to EPC. ORIGINAL X4261 RE "GOSHAWK II" FRONT SPRING SHACKLE. With further reference to our memo E1/5/3/21, we regret that we did not attach blue print of N. scheme 741, and send… | ||
| Scan10 | Alterations required by Mr. Royce for the 'Goshawk I' hand and foot equalising brake gear. | ||
| View original record | 2 To DS. From E. Copy to CL. EFC. ORIGINAL. 9 MAR 1921 RECEIVED E7/GT/3/21. X.3603 X.3606 RE "GOSHAWK I" - HAND AND FOOT EQUALISING BRAKE GEAR. Kindly note the following alterations which Mr. Royce… | ||
| Scan11 | Design modifications for a pull rod fork, differential box, equalising shafts, and other components. | ||
| View original record | To DA. from E. -2- E7/07/3/21 Contd. (6) The fork shown on N.715 at the top of the blueprint for the pull rod should have the shoulders narrowed, as previously mentioned, and the hexagon on the stem… | ||
| Scan12 | Approval notice for the 'Goshawk II' back axle tube design. | ||
| View original record | To St. from E. Copy to St. [Struck through] [Illegible text struck through] [Illegible text struck through] E.P.C. XH256 ORIGINAL 8/JUN/31. RECEIVED RE "GOSHAWK II" BACK AXLE TUBE. With reference to… | ||
| Scan13 | Alterations to the 'Goshawk II' side steering tube. | ||
| View original record | 2 Techs. from E. [Crossed out text] ORIGINAL EG/07/3D21. 8 MAR 1921 RECEIVED X.4265 RE 'GOSHAWK II' SIDE STEERING TUBE. Referring to N. scheme 754, Mr. Royce thinks that this is now generally… | ||
| Scan14 | Mr. Royce's remarks and required alterations for the 'Goshawk II' axle, brake, and rear hub. | ||
| View original record | To R. from E. [Struck through text: Copy to E.H. R.W. E.W. DPC.] X.4257 ORIGINAL E2/DS/3/23. 2 RECEIVED 10 MAR 1921 RE "GOSHAWK II" AXLE, BRAKE, AND REAR HUB. Referring to N. scheme 744, would you… | ||
| Scan15 | Design modifications for Michelin wheel axles, hub nuts, locking mechanisms, and brake components. | ||
| View original record | TO DA. from E. -2- E2/C8/3/21 Contd. it will be discharged through the over-flow passage in the cast aluminium brake cover. (8) The Michelin wheel axle Mr. Royce thinks is more urgent than the one for… | ||
| Scan16 | 'Goshawk II' universal joint behind the gearbox, referencing drawing LeC.1363. | ||
| View original record | TO DA. from E. Copy to CU. " " WOR. " " HS. " " HY. " " EPC. ORIGINAL. HS MAR 9 1921 (R) E1/G8/3/21. X4254 RE "GOSHAWK II" UNIVERSAL JOINT BEHIND GEARBOX. X4348 We send you herewith drawing LeC.1363… | ||
| Scan17 | Design alterations for the silencing system of the Goshawk I and II engines. | ||
| View original record | To [REDACTED] from E. [REDACTED] [REDACTED] X.4238 [REDACTED] E.P.C. X 3588 ORIGINAL RE "GOSHAWK I AND II" - SILENCER RECEIVED The designs in connection with the silencing system will apply in… | ||
| Scan18 | Design changes for an engine silencer system, including welding and brazing instructions. | ||
| View original record | To DA. from E. -2- E2/CG/1/21 Contd. (8) The holes for the diaphragms should be re-arranged. They should be fewer in number, and larger in size. And spread in a double line round the outer edge of the… | ||
| Scan19 | From Mr. Royce regarding a new, improved design for the rear universal joint of the 'Goshawk II' engine. | ||
| View original record | To M. from E. Copy to [illegible] X.4254 ORIGINAL RE 'GOSHAWK II' - REAR UNIVERSAL JOINT. The drawing of the front universal joint, namely, Lec.1363, which has been sent to you, shews a scheme in… | ||
| Scan20 | Potential adoption of C.A.V. batteries as standard over Exide batteries, due to separator issues. | ||
| View original record | To EFC. from R. Copy to CJ. " " HS. " " WOR. " " BY. " " PN. " " O. " " R.R. of America Inc. (For the attention of OY.) ORIGINAL R4/G14/3/21. 16 MAR 1921 RECEIVED X.4283 X.607 X.664 X.1198 RE… | ||
| Scan21 | Use of Exide batteries versus the Willard scheme for cars. | ||
| View original record | To EFC. from R. -2- R4/G14/3/21 Contd. equipments for cars in England. In writing the above I realise that you and other R.R. engineers have done much to improve the Exide batteries, but I still… | ||
| Scan22 | Performance, weight, air gap, and noise characteristics of Rotax dynamos. | ||
| View original record | To EFC. from R. Copy to CJ. HS. ORIGINAL R3/G14/3/21. 16 MAR 1921 RECEIVED X.1005 RE DYNAMOS (INCLUDING ROTAX.) X.294 Thank you for the memo re dynamo dimensions. PERFORMANCE. At the moment we are… | ||
| Scan23 | Drawing Loc.1364 for the 'Goshawk II' oil level indicator. | ||
| View original record | To-Da. from E. Copy to G.I. [Illegible strikethrough] EPC. [Stamp]: Da. MAR 15 1921 RECEIVED [Stamp]: ORIGINAL [Handwritten]: EL/G[unclear]/3/21. [Handwritten]: X.4235. [Typed]: RE "GOSHAWK II" - OIL… | ||
| Scan24 | Returning incorrect lamp bulbs for an 'Essex' car and requesting suitable replacements. | ||
| View original record | To EFC. from E. Copy to HS. [strikethrough] ORIGINAL RE LAMP BULBS FOR "ESSEX" CAR. With reference to your memo EFC1/T12/3/21 we are returning all the lamps you sent us for the "Essex" car as none of… | ||
| Scan25 | Incompatibility of lamp bulbs with American bayonet holders on an 'ESSEX' car and requesting suitable replacements. | ||
| View original record | To EFC. from E. Copy to HS. ORIGINAL E1/C15/3/21.D 16 MAR 1921 RECEIVED X.1364 X.4217 RE LAMP BULBS FOR "ESSEX" CAR. With reference to your memo EXCl/T12/3/21 returning all the lamps you sent us for… | ||
| Scan26 | Instruction to halt work on the 'Goshawk II' rear engine suspension to modify it for a starter motor. | ||
| View original record | To D.A. from E. Copy to C.J. " " OR. " " HS. " " BY. " " BFG. X42201.3 MAR 17 1921 ORIGINAL E3/G17/3/21. ( RECEIVED ) 18 MAR 1921 RECEIVED X.4220 RE "GOSHAWK II" - REAR ENGINE SUSPENSION Referring to… | ||
| Scan27 | Potential fault with the 40/50 HP petrol level indicator due to large apertures in the tank baffles. | ||
| View original record | To HS. from E. Copy to CJ. " " DA. " " EFC. Hs MAR 17 1921 RECEIVED ORIGINAL E4/G17/3/21. X 3891 RE 40/50 H.P. - PETROL LEVEL INDICATOR. X 3882 Referring to the above, Mr. Royce wishes to know if the… | ||
| Scan28 | Modifications to the 'Goshawk II' oil piping and oil pump relief valve, referencing drawing Lec.1368. | ||
| View original record | To EPC. from E. Copy to GJ. " " HS. X4232 " " BY. EPC. X4235 ORIGINAL RE OIL PIPING AND OIL PUMP RELIEF VALVE. "GOSHAWK II" We send you herewith drawing No. Lec.1368 shewing the above. This drawing… | ||
| Scan29 | Arrangement of the spare wheel carrier for the 'GOSHAWK II'. | ||
| View original record | TO DA. from E. copy to CD: HONY. HS. HX. ORIGINAL. E2/G24/3/21. x.4085 RE SPARE WHEEL CARRIER - "GOSHAWK II". We send you herewith drawing No. LeC.1369 shewing the arrangement that should be made for… | ||
| Scan30 | Examination of new battery cells and comparing the improvements in an Exide battery to the current standard. | ||
| View original record | To R & E. from EFC. ORIGINAL. EFC3/T7.3.21. c. to CJ. & PN. c. to By. & Bn. c. to Da. & EP. c. to EWT. for R. Inc. Handwritten notes (top right): X.4288, X 979, X 420, X 3629, X 3717 X.664 -… | ||
| Scan31 | Modifications to battery design and an examination of a new Tudor battery. | ||
| View original record | Contd. -2- EFC3/T7.3.21. 3. The wood separators have been made larger so as to project beyond the edges of the plates and it is now considered that this will render the possibility of short circuits… | ||
| Scan32 | Detailed review and feedback on the construction of a received battery. | ||
| View original record | Contd. -3- EFC3/T7.3.21. as in a previous battery we received. 3. There is rather more metal in the positive grids than previously, the idea being to give greater robustness at the sacrifice of a… | ||
| Scan33 | Exide and De Martis batteries, detailing their construction and performance claims. | ||
| View original record | Contd. -4- EFC3/T7.3.21. We think that both this battery and the new Exide battery should give very good results in service. eliminating entirely, we anticipate, the short circuit failures due to… | ||
| Scan34 | The investigation and testing of a Ni-Fe Alkaline Battery, including a diagram and comparison to an Exide battery. | ||
| View original record | Contd. -5- EFC3/T7.3.21. All this sounds like a fairy-tale, but if there is only a small portion of truth in their claims, we have considered it decidedly worth our while investigating this battery.… | ||
| Scan35 | List of weights and capacities for different models of batteries. | ||
| View original record | Contd. -6- EFC3/T7.3.21. The weights of these batteries are as follows :- Improved British Exide - 79½ lbs. R.R. Tudor. - 90 lbs. U.S.A. Exide. - 85½ lbs. De Martis. - 76½ lbs. The rated capacity of… | ||
| Scan36 | Costs and status of various experimental batteries. | ||
| View original record | To R. from EFC. c. to CJ. & PN. c. to By. & Bm. c. to Da. & B. c. to EWI. for R.R.Inc. X.664 - BATTERIES. ORIGINAL EFC2/T10.3.21. X.428 X.979 X.1198 X.3629 Further to our EFC3/T7.3.21, we have now… | ||
| Scan37 | Report of experimental bench tests on a Dixie Aero 648 Magneto, including weight, design remarks, and distributor dimensions. | ||
| View original record | R.R. 285A (100 T) (S.H. 798, 10-12-20) G. 3947 To R. From KFG. c. CJ. & FN. c. Ry. & Em. c. Da. & EF. c. ENT. for R.R.Inc. ORIGINAL EFC1/T15.3.21. X.3724 - DIXIE AERO 648 MAGNETO. Report of… | ||
| Scan38 | Test report detailing the performance and endurance of a magneto under various conditions. | ||
| View original record | Contd. -2- (6) Referring to the position when the armature flux is maximum for dead slow running as the datum position, we found that the make occurred 20° before and 18° after this position for the… | ||
| Scan39 | High and low-speed sparking characteristics, resistance, and noise levels of a magneto. | ||
| View original record | Contd. -3- EFC1/T15.3.21. These may be compared with the results for the Bosch machines and Watford machines given in our EFC4/T3.2.21. It will be seen that the spark length falls off much more… | ||
| Scan40 | Performance curves and heating tests for the Rotax A.T.12 Dynamo. | ||
| View original record | To R. & E. from EFC. c. to CJ. & PN. c. to Ds. & EP. c. to By. & Bn. c. to EWT. for R.R.Inc. ORIGINAL X.1005 - ROTAX A.T.12 DYNAMO. X4030 I have your note HS/G14.3.21. Regarding the Rotax dynamo, I… | ||
| Scan41 | Comparison of Rotax and Bosch machine performance, focusing on field winding resistance and output curves. | ||
| View original record | Contd. -2- EFC3/T17.3.21. remember that other machines have been compared for heating on the output mentioned above. It would appear that the field winding of the Rotax is unnecessarily low in… | ||
| Scan42 | Comparison of Rotax and U.S.A. Bosch dynamo performance, construction, and cooling characteristics. | ||
| View original record | Contd. -3- EFC3/T17.3.21. It will be noted that the final output in each case is less than 9 amperes, so that these results are representative of what would happen if we endeavour at first to keep the… | ||
| Scan43 | Comparing the A.T.4 and A.T.12 dynamos for a small car. | ||
| View original record | 4. Contd. EFCG/T17.3.21. There is also the A.T.4. dynamo which I note only weighs 17 lbs. as against 27 lbs. for the A.T.12.. although its output is catalogued at the same amount, 12 volts 10 amperes,… | ||
| Scan44 | Test results for chassis dynamo heating at maximum output. | ||
| View original record | 22.11.29. X.1936 - CHASSIS DYNAMO HEATING TEST RESULTS (MAXIMUM OUTPUT) (Continued) Dynamo. Maximum Gen.Amps. Cut-in Speed. Initial or Air Temp°C Final Temp°C Ther: Field Coil. Remarks. Rotax A.T.12.… | ||
| Scan45 | Comparison of specifications for Rotax A.T.13. and U.S.A. Bosch dynamos. | ||
| View original record | 17. 3. 21. DYNAMO PARTICULARS. Rotax A.T.13. U.S.A. Bosch. Weight. 27 lbs. 21 lbs. Weight of armature. 11.5 lbs. 7.2 lbs. Air gap (radial). .020" .020" Field coil resistance (cold). 1.8 ohms. 3.5… | ||
| Scan47 | Experimental bench tests for a B.T.H. Type F.M.6 Magneto. | ||
| View original record | To R. Er E. from EFC c. to CJ. & PN. c. to Da. & EP. c. to Bn. & By. c. to EWT. for R.R.Inc. ORIGINAL EFC3/T18.3.21. X.3515 - B.T.H. Type F.M.6 MAGNETO. REPORT OF EXPERIMENTAL BENCH TESTS. Two of the… | ||
| Scan48 | Results of various tests on a magneto, including armature flux, platinum point gap settings, and endurance trials. | ||
| View original record | Contd. -2- 6. Referring to the position of maximum armature flux at dead slow as datum position, we found that the make occurred 27.5° before and 18° after this position, for the advanced and retarded… | ||
| Scan49 | Various performance tests conducted on a magneto, including sparking characteristics and resistance measurements. | ||
| View original record | Contd. -3- EFC3/T18.3.21. 12. The short test at 1500 R.P.M. for 15 minutes with timing lever central and the discharges taking place on 5.5 mm. gaps in air, with standard length, 2 ft., high tension… | ||
| Scan50 | The experimental bench tests of a Sonner Type C.M.1 Magneto. | ||
| View original record | To R. & E. from EFC. c. to CJ. & PN. c. to Da. & EP. c. to By. & Bn. c. to EWT. for R.R.Inc. ORIGINAL. X.4210 - SONNER TYPE C.M.1 MAGNETO. REPORT ON EXPERIMENTAL BENCH TESTS. One of the above magnetos… | ||
| Scan51 | Results of various tests performed on a magneto. | ||
| View original record | Contd. -2- EFC2/T19.3.21. 6. Referring to the position of maximum armature flux at dead slow as datum position, we found that the make occurred 14.5° and 63° after this position for the advanced and… | ||
| Scan52 | The performance characteristics of a magneto, detailing its sparking range, electrical resistance, and milli-ampere output. | ||
| View original record | Contd. -3- EFC2/T19.3.21. 14. A range of advance and retard was now arrived at as described in our EFC4/T3.2.21, but in the process of this the contact breaker lever failed receiving a permanent set… | ||
| Scan53 | The unsatisfactory performance of a Nickel-Iron (Ni-Fe) battery for car starting compared to an acid battery. | ||
| View original record | To R. A. F. from EPC. c. to CJ. & PH. c. to Ds. & EF. c. to Hy. & Hn. c. to W&F. for R.R.Inc. ORIGINAL X. 3717 Ni-Fe BATTERY. We have come to the conclusion that the Alkaline battery as at present… | ||
| Scan54 | The experimental bench tests and initial impressions of three different magnetos. | ||
| View original record | To R & E. from EFC. c. CJ. & PN. c. By. & Bn. c. Da. & EP. c. EWT. for R.R.Inc. ORIGINAL EFC/T21.3.21. X.430 - MAGNETOS - GENERAL X.3724 X.3515 X.4210 Independently of this note we are sending reports… | ||
| Scan55 | Continued page discussing selectable ranges, a forthcoming table, and tabulated bench test results for magnetos. | ||
| View original record | Contd. -2- EFC5/T21.3.21. ranges of 34° suitably chosen independently of the makers ranges, together with remarks re the choosing of the range. This table, which we hope will be of interest, will… | ||
| Scan56 | Technical memo discussing the performance and potential modifications for a Rotax dynamo. | ||
| View original record | R.R. 885A (100 T) (S.H. 798. 10-12-20) G. 2947 ORIGINAL To R. from EFC. c. to CJ. EFC1/T30.3.21. X.1005 - ROTAX DYNAMO. We have your note R3/G24.3.21 The effect in the Rotax dynamo of inserting… | ||
| Scan57 | Query regarding the cost-effectiveness of replacing a machine versus dismantling its armature. | ||
| View original record | EFC1/T30.3.21. -2- Contd. without dismantling the armature. Would you consider it worth our while to do this and obtain another machine in its place ? EFC. K & E' S39S (100 L) (2'H 198' 10-15-30) C'… | ||
| Scan58 | Performance curves and firing speeds for three types of magnetos. | ||
| 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. EFC5/T31.3.21. X. 3723 X. 3515 X. 4210 X.430. MAGNETOS- GENERAL. Referring to our EFC5/T21.3.21… | ||
| Scan59 | Comparison of low sparking speeds and test results for various types of magnetos. | ||
| View original record | Contd. -2- EFC5/T31.3.21. the more retarded portion of the maker's range instead of from the more advanced portion, this being the result of peculiarities of the design of these two magnetos, which… | ||
| Scan60 | Table of lowest speeds in R.P.M. for various magnetos during regular firing on 5.5mm air gaps. | ||
| View original record | Handwritten: X 2375, X 4181, X 39/6 Typed: X.430. MAGNETOS. TABLE OF LOWEST SPEEDS IN R.P.M. FOR REGULAR FIRING ON 5.5mm. GAPS IN AIR. N.B. Test range between advance and retard 34º in all cases… | ||
| Scan61 | Comparison table of various magnetos detailing their types, numbers, and performance speeds. | ||
| View original record | -2- Contd. Magneto. | Type and number. | X. No. | Lowest speeds. | Remarks. | | | Adv. | Cent. | Retd. | ---|---|---|---|---|---|--- R, Bosch. | Z.R.6 | 427 | 260 | 170 | 246. | Advanced position same… | ||
| Scan62 | Table of results of magneto performance tests. | ||
| View original record | A. X.430. TABLE OF RESULTS OF MAGNETO PERFORMANCE. 23.3.21. X.2375- X.4181 X.39/6 | Magneto. | Type & X. No. | (1) Weight (lbs) | (3) Air gap (") | (4) H.T. safety gap (mm) | Platinum gap (inches) |… | ||
| Scan63 | Comparative table of performance data for various magneto models. | ||
| View original record | R.R. 63 (50 T) (S F. 846. 6-8-19) G 2459. -2- A. Magneto. Degrees of make Maker's make advanced Maker's break advanced Our break advanced Our break retarded Lowest speeds for 5.5 mm. Remarks. Adv.… | ||
| Scan64 | Comparison table of test results for various magnetos, including resistance and output readings. | ||
| View original record | -3- A. Contd. (17) Magneto. Contact breaker flinging speed (R.P.M.) (18) Primary resistance (ohms). (19) Secondary Resistance (ohms). (20) Secondary m.a. on C8 Volts 50~ Hor. Vert. (24) Remarks.… | ||