Rolls-Royce Archives
| Identifier | Entry | ||
| Scan0 | Performance of a new steering system, focusing on its lack of self-centering. | ||
| View original record | To R. From Hs. c. to CJ. c. to E. c. to Ds. c. to BY. ORIGINAL. Hs2/LG1.1.23. STEERING. X4264 X3465 The best steering we have tried on a 40/50 car or a 20 HP. car is one fitted with radius rods to the… | ||
| Scan1 | Analysis of steering column friction, road shock, and wobbles, comparing a Goshawk-11 with radius rods to standard cars. | ||
| View original record | contd:- -2- the radius rods, having the front springs fitted up in the normal way and still get practically no shock on the steering wheel. It is necessary for us to find some means of reducing the… | ||
| Scan2 | The test results of a 20 HP engine fitted with a large crankshaft, comparing it to the standard engine. | ||
| View original record | ORIGINAL. To R. from Hs. c. to CJ. c. to E. c. to Da. c. to BY. Hs3/LG1.1.23. 20 HP. ENGINE WITH LARGE CRANKSHAFT. X4221 We have been running a 20 HP. engine on the test bench fitted with the large… | ||
| Scan3 | Comparing the pistons and compression ratios of the Hawk-Northcliffe and 40/50 HP models. | ||
| View original record | ORIGINAL. To R. from Hs. Hs4/LG1.1.23. X3408 X3773 X790 PISTONS ON "HAWK-NORTHCLIFFE". The pistons on the above chassis are similar in design to the 40/50 HP. They are the split type with 4 rings. The… | ||
| Scan4 | Experiments on the Goshawk ignition system using dry cell batteries from German Army stores. | ||
| View original record | To R & E. from EFC. c. CJ. & FW. c. Ey. & EP. c. Rs. & Ds. ORIGINAL EPCE/T1.1.23. X.3485 - GOSHAWK IGNITION. We have now made the second experiment asked for in your R2/M30.11.22 of finding out if the… | ||
| Scan5 | The performance and limitations of dry cell batteries used for engine ignition. | ||
| View original record | Contd. -2- EFC2/T1.1.23. The next day a short circuit current of 2.9 amperes was attained, the open circuit voltage being 1.41. Subsequently the short circuit current taken at intervals began to… | ||
| Scan6 | Cell activation times and the issue of extra weight. | ||
| View original record | Contd. -3- EFC2/T1.1.23. of the question owing to the extra weight, say 30 lbs, which it would always be necessary to carry. Then again, the cells are only 60% active after 15 minutes and not 100%… | ||
| Scan7 | Electrical test results for a post-war R. Bosch electrical system's dynamo performance. | ||
| View original record | ORIGINAL To R. & E. from EFC. c. CJ. & PH. c. Ry. & EP. c. Rg. & Da. X.4562 - POST WAR R. BOSCH ELECTRICAL SYSTEM Further to our EFC1/T20.12.22, we have now made a number of electrical tests on the… | ||
| Scan8 | Comparison of ampere output and voltage performance curves for a Bosch dynamo unit under hot and cold conditions. | ||
| View original record | Contd. -2- In both cases (c) and (d), the ampere output curve is quite steep and occurs at speeds very nearly as low as the two pole pre-War Bosch machine and one other machine tested, namely, Rotax… | ||
| Scan9 | Performance characteristics of a dynamo unit showing voltage drops at various speeds and loads with a corresponding graph. | ||
| View original record | Contd. -3- consisting of resistance (variable) only (i.e. without the use of a battery) have been taken at various speeds 660, 825, 1050, 1500, 1750, 2000 and 2500 r.p.m. with the unit in an… | ||
| Scan10 | Trickle charging tests on a battery at various loads and rotational speeds. | ||
| View original record | Contd. -4- EFCL/T3.1.23. of suitable value with the loads of resistance proper for the job, with the steady trickle charging current to the battery with no load on the system, remained fairly closely… | ||
| Scan11 | Data tables showing the resultant current on a battery based on amperage load and engine RPM. | ||
| View original record | Contd. -5- EFCL/T3.1.23. Speed 1500 R.P.M. Amp. load on system. Amp. delivery of dynamo unit. Resultant current charging or dis-charging (-) battery 0 1.7 1.7 1.0 2.3 1.3 2.0 2.8 .8 3.0 3.65 .65 4.0… | ||
| Scan12 | The performance and experimental work of a dynamo unit, including observed defects and noise levels. | ||
| View original record | Contd. -6- EFC1/T3.1.23. Another intended test, though not yet carried out, will consist of starting with the battery right down and observing the relation of battery charge or discharge current to… | ||
| Scan13 | Continued report correcting previous findings on the starter motor's solenoid and auxiliary coil operation. | ||
| View original record | Contd. -7- EFCL/T3.1.23. rotation of the machine can be readily changed by reversing the field current connections, will be noted. Such a system also applies to the reversal of rotation direction in… | ||
| Scan14 | Operation and inspection of a starter motor scheme. | ||
| View original record | EFC1/T3.1.23. -8- Contd. It is not of course easy to judge the operation of this starter motor scheme without actually running it on an engine, though it appears from the bench experiments that apart… | ||
| Scan15 | Graph showing the open circuit volt-speed characteristics for a Post-War R. Bosch Dynamo, with and without regulator control. | ||
| View original record | OPEN CIRCUIT VOLT-SPEED CHARACTERISTICS OF POST-WAR R.BOSCH DYNAMO [No 41802] Vibrator regulator controlled and uncontrolled. Y-Axis Labels: FIELD CURRENT (AMPERES) TERMINAL VOLTAGE X-Axis Label:… | ||
| Scan16 | Problems with the latest spare wheel carrier for the 20 HP chassis and recommending a return to the original design. | ||
| View original record | To R. from Hs. C. to HJ. [crossed out] C. to G. [crossed out] C. to De. [crossed out] C. to BY. [crossed out] C. to Sp. [crossed out] ORIGINAL. Hs1/LG8.1.23. 20 HP. CHASSIS. SPARE WHEEL CARRIER FOR… | ||
| Scan17 | Sales request to conceal bolt heads on the 20 HP radiator shutters. | ||
| View original record | To R. from Hs. c. to E. ORIGINAL. 20 HP. RADIATOR SHUTTERS. Sales have asked whether it would be possible to get rid of the bolt heads which show on the side plates of the radiator when the shutters… | ||
| Scan18 | Comparison of the 40/50 HP steering system against the Delage steering system. | ||
| View original record | To R. from Hs. c. to CJ. c. to E. c. to Da. c. to BY. ORIGINAL. Hs2/LG10.1.23. R.R. STEERING. X3500 X3465 We have made several comparisons with the 40/50 HP. steering with and without the plain thrust… | ||
| Scan19 | Comparison of steering characteristics and road shock transmission between a 40/50 HP model and a Delage car. | ||
| View original record | contd:- -2- in the column, that 6 lbs. pull on the pendulum lever turned the steering wheel. On the Delage car it was necessary to have 22 lbs. pull on the pendulum lever in order to turn the wheel.… | ||
| Scan20 | Steering effort tests comparing a 40/50 model with a Delage car under various conditions. | ||
| View original record | contd:- -3- We fixed on to the steering wheel of each car a pulley (12.5" radius) around which we passed a wire and hung on weight The 40/50 with the ball thrust took 4.5 ozs., the Delage 14 ozs. The… | ||
| Scan21 | Tests conducted to understand the cause and period of steering wobbles. | ||
| View original record | To R. from Hs. c. to OJ. c. to H. c. to Dk. c. to EY. ORIGINAL. Hs1/LG12.1.25. X457 X3500 X1692 STEERING WOBBLES. The wobbles referred to in these tests are the violent wobbles of the road wheels… | ||
| Scan22 | Various tests conducted to understand the cause and effect of steering 'wobbles'. | ||
| View original record | contd:- -2- we are using now. We proved that tyre pressures made no difference to the period. We proved that whether we had buffer springs in the side steering tube or whether we had a straight tube… | ||
| Scan23 | Tests on vehicle 'wobbles', examining the effects of tyre pressure, tyre type, and weight distribution. | ||
| View original record | contd:- -3- We found that the tyre pressure has a considerable effect upon the degree and the speed at which the wobbles take place. We have never yet been able to produce wobbles if we run on bare… | ||
| Scan24 | Analysis of chassis and steering wobble, discussing causes, testing methods, and reduction techniques such as adding friction. | ||
| View original record | contd:- -4- instead of having the weight bolted to the under-side of the crankcase we fixed it to the top of the crankcase, wobbles could be built up. If we take a chassis which has wobbles and we… | ||
| Scan25 | Experiments and conclusions on vehicle steering wobble. | ||
| View original record | Contd:- -5- on the Delage is practically the same as our own - 310 per min. The Marmon we can wobble but in order to get them to build up, it is necessary to have a considerable amount of slack in the… | ||
| Scan26 | Requesting suggestions for replacing split pins in gudgeon pin set screws due to them breaking and falling into the crankcase. | ||
| View original record | E. from Hs. ORIGINAL Hs2/LG15.1.23. SPLIT PINS in GUDGEON PIN SET SCREWS. X636 X343/ We are always in more or less trouble with these split pins breaking off and dropping into the crankcase. We do not… | ||
| Scan27 | Ignition plug performance, pre-ignition issues, and potential solutions for Goshawk and aero engines. | ||
| View original record | (3548) To B.J. from R. c. to CJ. LHS. c. to BY. Wor. c. to Hs. EP. c. to E. Da. R9/M19.1.23. IGNITION PLUGS. X.4091. X.4560. [crossed out] The last Goshawk which came here, with miniature plugs seems… | ||
| Scan28 | From Hs. to R. regarding a delay in completing a car due to noisy gearing on a new starter drive. | ||
| View original record | To R. from Hs. ORIGINAL Hs4/LG19.1.23. 4-Goshawk-11. X4219 X 3587 We have been delayed in getting this car completed owing to the fact that when we fitted the new Bijur Starter Drive, we found that… | ||
| Scan29 | The coefficient of expansion and availability of Monel Metal tubes. | ||
| View original record | E. from Hs. ORIGINAL. Hs1/LG22.1.23. MONEL METAL. X4356 When we were last at W.W., you wished to know the coefficient of expansion of this metal. We attach Booklet which gives all particulars and also… | ||
| Scan30 | Letter from G & J. Weir Ltd. regarding the properties and availability of Monel Metal tubes. | ||
| View original record | C O P Y. G & J. Weir Ltd., Engineers, Cathcart, Glasgow. 18th. Jan. 1923. Messrs: Rolls-Royce Ltd., Nightingale Rd. Derby. Dear Sirs, Ref. Wd6/NJ17.1.23. As requested in yours of 17th.inst., we have… | ||
| Scan31 | The solid steering nut for the 40/50 model, proposing it for new steering types. | ||
| View original record | Da. from Hs. ORIGINAL Hs2/LG22.1.23. RE 40/50 STEERING. X3465 We have had no complaints as regards the solid steering nut, in fact, we consider it an advantage and a feature which should be… | ||
| Scan32 | The Goshawk dynamo's output performance, including experimental curves and comparisons with other machines. | ||
| View original record | To R & E. from EFC. c. CJ. & PM. c. HY. & RP. c. RG. & DE. ORIGINAL EFC2/T23.1.23. X.4383 - GOSHAWK DYNAMO OUTPUT PERFORMANCE. ------------------------------------------ As stated in our… | ||
| Scan33 | Experiments to optimise a machine's output, focusing on field winding and control brush positioning, and comparing it to a Bosch dynamo. | ||
| View original record | To P & E. from EFC. -2- EFC2/T23.1.23. Contd. ******************************************************************************** experiment on otherwize the same machine. By consideration of the two… | ||
| Scan34 | Comparison of specifications and performance characteristics for Bosch and R.R. machines. | ||
| View original record | EFC2/T23.1.23. -3- Contd. Bosch. R.R. Air gap. .020" .015" No. of poles 4 4 Field wire 21 SWG. 19 SWG. Field circuit resis. S.D 5.D 3.6 No. of slots. 17 29 Coils per slot. 2 1 No. of coils of comm.… | ||
| Scan35 | Graph of open-circuit volt-speed curves for the Goshawk dynamo under cold and hot conditions. | ||
| View original record | OPEN-CIRCUIT GOSHAWK DYNAMO VOLT-SPEED CURVES. For cold and fully hot conditions. E.M.F. [VOLTS] DYNAMO SPEED [R.P.M.] Table of Balancing Speeds: Dynamo. | 12.4v. Cold | 13.6v. Hot | Range. U.S.A.… | ||
| Scan36 | Performance graph comparing the current output curves of Goshawk and Bosch dynamos at various speeds and temperatures. | ||
| View original record | AMPERE OUTPUT OPERATING VOLTAGES [Hot] 15.35 15.1 14.85 14.6 14.35 14.1 13.85 13.8 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 DYNAMO SPEED [R.P.M.] 0 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400… | ||
| Scan37 | Experiments with an improved Goshawk ignition coil, detailing its construction and materials. | ||
| View original record | To R. from EFU. c. to CJ. c. to Ry. c. to EP. ORIGINAL EFC1/T23.1.23. X.4079 - RE GOSHAWK IGNITION COIL. On 4-G.II which is to be brought to you tomorrow. we are putting one of the standard coils with… | ||
| Scan38 | Technical memorandum discussing modifications to a coil, including a new case moulding and reduced primary inductance. | ||
| View original record | EFC1/T23.1.23. -2- Contd. of .312 between the secondary winding and the case, which would seem to be ample. As regards the new coil case moulding it has only meant a new plunger being made for the… | ||
| Scan39 | The failure of Goshawk 11 universal joints due to insufficient lubrication and a proposal for an oil pump. | ||
| View original record | To R. from Hs. c. to CJ. c. to E. c. to BY. c. to Da. ORIGINAL. Es3/LG29.1.23. GOSHAWK 11. UNIVERSAL JOINTS. X4254 X4348 With reference to the two universal joints I left at W.W. These joints were… | ||
| Scan40 | Page discussing the weakness of an open propeller shaft requiring hand-lubrication for its joints. | ||
| View original record | contd:- -2- from the gearbox. The chief weakness with the open propeller shaft is the necessity of hand-lubrication for the joints. Hs. | ||
| Scan41 | Testing of a front axle with brakes for the 'Stork' and 'Heron' chassis. | ||
| View original record | ORIGINAL. To R. from Hs. c. to CJ. c. to BJ. c. to Wor. c. to BY. RE. "STORK" AND "HERON" CHASSIS. x.4561 x.4547 We shall be able, before you go away, to bring to W.W. in a case, a complete front axle… | ||
| Scan42 | Clutch slipping in a Bijur starter drive due to suspected oil contamination. | ||
| View original record | To R. from Hs. c. to CJ. c. to E. c. to Da. c. to BY. ORIGINAL Hs4/LG29.1.23. BIJUR STARTER DRIVE. X3587 We are sending to you one of the cork clutch discs from the first Bijur Starter drive which we… | ||
| Scan43 | Steering performance and recommending design changes for the Goshawk 11. | ||
| View original record | To R. from Hs. c. to CJ. c. to E. c. to Da. c. to BY. ORIGINAL. Hs2/LG30.1.23. GOSHAWK 11. STEERING. X4263 X4264 The more experience we have with the car fitted with radius rods, the more pleased we… | ||
| Scan44 | Machining and comparative strength tests of various insulating materials. | ||
| View original record | To R. A. R. from EFC. c. CJ. & PHI c. Ey' & EP. c. RC. & DA. ORIGINAL VARIOUS TESTS OF INSULATING MATERIALS. Below is a report of a number of tests of insulating materials which have been made from… | ||
| Scan45 | Comparative loading and high voltage breakdown tests on Stabalite and Beldalite materials. | ||
| View original record | Contd. -2- EPC2/T30.1.23. The three ends of the fractures specimens are sent to Mr. Royce for examination, the names of the respective materials being scratched on the pieces. (3) Comparative Loading… | ||
| Scan46 | The electrical breakdown voltage tests of various insulating materials. | ||
| View original record | Contd. -3- EPCR/T3 9.1.23. No. of Sample. | Material. | Thick-ness. | Voltage Reading. | Trans. Ratio. | Breakdown Voltage. | Volts per mil. ---|---|---|---|---|---|--- 1. | Oiled silk. | .002" |… | ||
| Scan47 | Analysis of canvas impregnated and fibre core specimens, noting low breakdown voltage results. | ||
| View original record | Contd. -4- EFC2/T30.1.23. Nos. 5 & 6 were canvas impregnated specimens. The result on No.5 is low owing to previously existing cracks in the material. Specimen No.7 was made up with a fibre core and… | ||
| Scan48 | Unauthorized deviation from standard procedure for piston ring stops and demanding an inquiry. | ||
| View original record | H. TO HP. FROM R. [Stamp: ORIGINAL] [Stamp: RECEIVED 8 XI 1923] [Typed and struck through: C.C. to OJ. PJ. HS. HY. ✓] R1/M2.1.23. [Handwritten, crossed out: X741] [Handwritten: X3666] RE. PISTON RING… | ||
| Scan49 | Drawing No. LeC 1666 for revised driving and damping springs for the Goshawk 11 spring drive. | ||
| View original record | ORIGINAL. TO-BY: FROM E. c. to GJ. c. to HS. E2/M6.1.23. X4222 GOSHAWK 11. SPRING DRIVE. We send herewith drawing No. LeC 1666, shewing driving and damping springs for the revised Goshawk 11. spring… | ||
| Scan50 | The design of the Goshawk ignition coil, awaiting test results for a new larger version before proceeding. | ||
| View original record | R.R. 235A (100 T) (S.H. 159 11-8-20) G. 2800 TO EFC. FROM E. c. to CJ. c. to HS c. to HY ORIGINAL, E1/M6.1.23. X.4079 - RE GOSHAWK IGNITION COIL. Referring to the above, and the drawing LeC 1653, when… | ||
| Scan51 | The supply of open touring and closed bodies for 'Stork' and 'Heron' chassis. | ||
| View original record | R.R. 235A (100 T) (S.H. 159 11-8-20) G. 2800 TO HS. FROM DA. DA1/M8.1.23. [STAMP: ORIGINAL RECEIVED Hs JAN 1923] BODIES FOR "STORK" & "HERON". X4113 Replying to HS4/LG6123., we are getting out an open… | ||
| Scan52 | Arrangement of oil holes and spring pressure for a magneto coupling in response to a criticism. | ||
| View original record | ORIGINAL TO-BY. FROM E. E1/M8.1.23. c. to CJ. HS. With reference to your BY5/P6123, for- warding scheme 457 in reply to Mr. Royce's criticism of the 16th of last month, we send you herewith Lec 1668… | ||
| Scan53 | Proposal by Mr. Royce for damping the Hawk-Northcliffe & Seagull power unit using flexible arms and friction discs. | ||
| View original record | R.R. 285A (100 T) (S.H. 159, 11-8-20) G. 2800 TO HS. FROM E. c.c. to CJ. BY. EP. ORIGINAL E1/M9.1.23. RE. HAWK-NORTHCLIFFE & SEAGULL. X 3408 / X 9770 Referring to the experiment for damping the Hawk-… | ||
| Scan54 | Ignition plug availability and proposing a new auxiliary locked switch design for the 40/50 and Goshawk models. | ||
| View original record | R.R. 235A (100 F) (S.H. 159. 11-8-20) G. 2800 TO HS. FROM R. c. to CJ. WCR. c. to FN. OY. c. to DJ. DY. c. to E.W.H. EP. STAMP: ORIGINAL RECEIVED JAN 25 1923 RE. IGNITION - 40/50 & GOSHAWK.… | ||
| Scan55 | Design and effectiveness of radiator louvres for the Goshawk and 40/50 models. | ||
| View original record | R.R. 235A (100 T) (S.H. 159. 11-8-20) G. 2500 TO HS. FROM R? C: to CJ. BJ. C: to PN. OY. C: to BI. EX. C: to EP. [STAMP: ORIGINAL] [STAMP: RECEIVED HS JAN 12 1923] RE. LOUVRES. [Handwritten: X4240 /… | ||
| Scan56 | Potential design modifications to a dynamo, specifically the yoke section and magnetic flux. | ||
| View original record | R.R. 235A (100 T) (S.H. 159. 11-8-20) G. 2800 TO EFC. FROM R. C. to C.J. C. to W.O.R. C. to P.N. C. to B.I. C. to H.S. XH010 [Stamp: ORIGINAL] [Stamp: RECEIVED JAN] RE. R-R. DYNAMO FOR 40/50. I notice… | ||
| Scan57 | Standardization of straight teeth and ground gears for the Goshawk Gearbox. | ||
| View original record | TO BY. FROM R. c. to WOR. HS. R5/M10.1.23. RE. GOSHAWK GEARBOX. X4543 X4247 The straight teeth, and the ground gears appear to make the box all that can be expected. I think these should be… | ||
| Scan58 | Proposal for a light speed body for use with 'Stork' & 'Heron', detailing door, spare wheel, and battery placement. | ||
| View original record | TO BJ. &. HS. FROM R. ORIGINAL RECEIVED JAN 12 1926 R10/M10.1.23. X4113 We propose having made under Derby control a light speed body for use with "Stork" & "Heron". A print of the drawing of this… | ||
| Scan59 | Car's noisy gears, proposing to sell it before the arrival of new 'Stork', 'Heron', and 'Seagull' models. | ||
| View original record | R.R. 235a (100 T) (S.H. 798. 10-12-20) G. 2948 TO HS. FROM R. c.c. to BJ. ORIGINAL RECEIVED 12 JAN R7/M10.1.23. X3923 X3548 6. EX. This is an excellent car, but could be slightly less noisy in the… | ||
| Scan60 | Reporting a stuck air valve on a Goshawk carburettor and requesting it be made more free. | ||
| View original record | R.R. 235b (100 T) (S.H. 798. 10-12-20) G. 2948 TO HS. FROM R. ORIGINAL RECEIVED JAN 1923 Hs R6/M10.1.23. 6. GOSHAWK. X4228 X4219 It was reported to me that the air valve stuck open on this… | ||
| Scan61 | Design of the 'Seagull' cylinder head, valve rocker gear, and compression ratios. | ||
| View original record | ORIGINAL TO DF. FROM E. c. to ej. WCR. HS. E1/M10.1.23. X9050 X9060 X9070 V38 V3844 X8875 RECEIVED JAN 11 1928 Copy "SEAGULL" CYLINDER HEAD & VALVE ROCKER GEAR. We send you herewith drawings Nos. LeC… | ||
| Scan62 | Specifications for the combustion head, valve push rods, and rocker mechanism. | ||
| View original record | (2) of the combustion head given have been obtained from approximate calculations only. We want these to be accurately determined in Derby by means of a model. The tubes which carry the valve push… | ||
| Scan63 | Requesting remarks and feedback on the solid steering nut used on the Goshawk 11. | ||
| View original record | R.R. 235B (100 T) (S.H. 798. 10-12-20) G. 2948 ORIGINAL. TO HS. FROM DA. DA2/M11.1.23. GOSHAWK 11. STEERING. X4264 We should like to have any remarks that you may have to make about the solid steering… | ||
| Scan64 | Inclination of steering pivots and spring tables for 'Stork', 'Heron', and 'Goshawk' models. | ||
| View original record | R.R. 235A (100 T) (S H. 159. 11-8-20) G. 2800 Hancock ORIGINAL TO HS. FROM DA. RECEIVED JAN 16 1923 FRONT AXLE. DA1/M13.1.23. X4547 X4264 X3525 X3465 We recently had a request from BY's Dept. asking… | ||
| Scan65 | Query requesting specifications and comparative test results for the Delage steering system. | ||
| View original record | (2) With reference to the Delage steering we are under the impression that this is a worm and sector or worm and wheel. Could you confirm this and could you at the same time give us particulars as to… | ||
| Scan66 | Cold weather trials and the cause of a broken engine part due to stress fatigue. | ||
| View original record | R.R. 235A (100 T) (S.H. 159 11-S-20) G. 2800 [Handwritten in blue pencil, circled] TO CJ. FROM R. [Stamped in blue] ORIGINAL [Handwritten over stamp] seen F.R. [Handwritten] X4269 [Handwritten in blue… | ||
| Scan67 | Proposing an 'Arctic chamber' for cold weather testing after a 20 HP chassis cracked. | ||
| View original record | To R. from CJ. Re Goshawk. My dear R., The fact that some part of the 20 HP chassis has cracked whilst standing still in a cold garage suggests that, as our chassis have to be used in extremes of cold… | ||
| Scan68 | Difficulties of fitting various instruments to the instrument board. | ||
| View original record | ORIGINAL TO ROY. FROM R. C. to HJ. PM. EY. C. to RH. HS. EB. INSTRUMENTS FOR BOARD: X4163 X4067 What are the present difficulties of getting instruments to fit the instrument board from the back so as… | ||
| Scan69 | Proposed sports touring body for the 'Stork' and 'Heron' chassis, reference X4113. | ||
| View original record | TO EX & HS. FROM DA/EV. RE. BODY FOR "STORK" & "HERON". X4113 We enclose N.schs. 1369 & 70 shewing what we think would be a nice sports touring body for fitting to the "Stork" chassis which will… | ||
| Scan70 | Car body finish, colour specifications, wheel types, and coordination with different coachbuilders. | ||
| View original record | (2) jack etc can be carried together with a tin of spare oil, as we wish no side oil tank to be fitted. Concerning the finish of the car we think this should be somewhat smart and attractive, with… | ||
| Scan71 | Specification for a three-position ignition switch for the 40/50 and 20.HP models. | ||
| View original record | TO Mr. STENT. FROM R. c. to Mr. H.E. [Struck through] c. to Mr. H.S. [Struck through] ORIGINAL RECEIVED JAN 18 X1413 R4/M13.1.23. A switch is wanted for the 40/50, and sometimes the 20.HP. - small but… | ||
| Scan72 | Redesign of the 'Seagull' steering box to a worm and worm-wheel system. | ||
| View original record | R.R. 235A (100 T) (S.H. 159. 11-8-20) G. 2800 ORIGINAL TO HS. FROM R. c. to CJ. WOR. c. to DA. DY. c. to Mr. Claremont. RE. STEERING. X9430 Many thanks for memo. I was pleased to hear that most of the… | ||
| Scan73 | Sending drawing Lec 1670 for a 'Seagull' Spring Drive & Slipper Flywheel and requesting a blueprint. | ||
| View original record | R.R. 235B (100 T) (S.H 798. 10-12-20) G. 2948 Copy ORIGINAL RECEIVED 18 JAN 1923 HS TO BY. FROM E. c. to CJ. c. to HS. E2/M16.1.23. X9020 X9300 "SEAGULL" SPRING DRIVE & SLIPPER FLYWHEEL. We send… | ||
| Scan74 | Causes of steering wobbles and proposing a test for a potential solution. | ||
| View original record | R.R. 235A (100 T) (S.H. 159. 11-8-20) G. 2800 ORIGINAL. TO HS. FROM R. R3/M16.1.23. [Stamp: RECEIVED 18 JAN] RE. STEERING WOBBLES. X. 457 Your experiments on steering wobbles are most interesting.… | ||
| Scan75 | Benefits and implementation of thermostatically controlled louvres on a No.5 Goshawk car. | ||
| View original record | R.R. 235A (100 T) (S.H. 159 11-8-20) G. 2500 ORIGINAL. RECEIVED 18 JAN 1923 TO HS. FROM R. C. to CJ. BY. C. to DJ. WOR. C. to DN. W. C. to FN. LP. C. to HFC. RE. No.5 GOSHAWK - GWYNNE ALL-WEATHER.… | ||
| Scan76 | Page 2 of a document describing the process for filling, sealing, and testing thermostat units, and preventing water system corrosion. | ||
| View original record | R.R. 235A (100 T) (S.H. 159. 11-8-20) G. 2500 (2) the liquid with which it is desired to fill them, the temperature of the liquid being low. We subject the whole to a high vacuum so as to extract all… | ||
| Scan77 | Letter from F. H. Royce to Mr. Ricardo discussing the testing of a compound oil in a lighting engine and a 20 HP car. | ||
| View original record | COPIES TO:- RG. HS. WD. ROY. ORIGINAL RECEIVED "ELMSTEAD" WEST WITTERING. CHICHESTER. 16th January 1923. R2/M16123. H.R. Ricardo Esq., Messrs Ricardo & Co.(Engineers) Ltd. Bridge Works. Shoreham.… | ||
| Scan78 | Policy for experimental cars, including the 'Heron', 'Seagull', and improvements to the 40/50 model. | ||
| View original record | TO S.R. FROM R. c. to B.J. (Struck through) c. to W.H. (Struck through) c. to D.A. (Struck through) c. to S.D. (Struck through) c. to H.S. [STAMP: ORIGINAL] [HANDWRITTEN: HS] [STAMP: RECEIVED JAN 19… | ||
| Scan79 | Progression of the 'Heron' and 'Seagull' projects, and the fitting of front wheel brakes to the 40/50 chassis. | ||
| View original record | (2) So that I am strongly in favour of proceed- ing with the "Heron" as well as the "Seagull", in case it is desired to go on somewhat longer before we put the "Seagull" into production. This policy… | ||
| Scan80 | Updates on the design and manufacture of a speed touring body for 'Seagull' or 'Heron' models. | ||
| View original record | R.R. 235a (100 T) (S.H. 798. 10-12-20) G. 2948 TO HS. FROM DA/EV. ORIGINAL. DA/EV2/M18.1.23. RE. SPEED TOURING BODY FOR "SEAGULL" OR "HERON". x9840 We would like you to keep us informed as to what is… | ||
| Scan81 | Modifications to the 'Seagull' valve rocker components and associated drawings. | ||
| View original record | TO - BY. FROM E. c. to CJ. HS. ORIGINAL E1/M18.1.23. X9090 X4060 "SEAGULL" - VALVE ROCKER DETAILS, ETC. We send herewith drawing No. LeC 1669 shewing the above. This drawing supercedes LeC 1658 & 1667… | ||
| Scan82 | Cover note for drawing No. Lec 1671, regarding calculations for the exact lift of a Seagull valve rocker. | ||
| View original record | TO BY. FROM E. c. to CJ. c. to HS. ORIGINAL SEAGULL VALVE ROCKER. CALCULATIONS FOR EXACT LIFT. We send you herewith drawing No. Lec 1671, shewing the above. E1/M19.1.23. x9090 x9060 RECEIVED JAN 22… | ||
| Scan83 | Modified connecting rod for the Goshawk 11 steering column. | ||
| View original record | R.R. 235B (100 T) (S.H. 798. 10-12-20) G. 2948 ORIGINAL TO HY. FROM DA. c. to CO. WGR. HS. DA2/M19.1.23. GOSHAWK 11. STEERING COLUMN. X. 4264 We send herewith N.sch. 1364. shewing a modified… | ||
| Scan84 | Engine overheating on the 40/50 & Goshawk models, with proposed solutions and a note on corrosion. | ||
| View original record | ORIGINAL (Stamp) TO BJ. FROM R. c. to CJ. LHS. c. to SY. WOR. c. to HS. EP. c. to E. DA. RE. OVERHEATING. RECEIVED (Stamp) X766 / Y3499 X274 (Handwritten, Y3499 is struck through) I understand that we… | ||
| Scan85 | Strategy for modifying the 40/50 model versus abandoning the Heron and developing the Seagull. | ||
| View original record | TO BJ. FROM R. c. to CJ. LHS. c. to BY. WOR. c. to HS. EP. c. to E. DA. Hs (handwritten) ORIGINAL (stamp) RECEIVED JAN 19 1923 (stamp) RE. 40/50 X.3548 (handwritten) There was much discussion as to… | ||
| Scan86 | Design of a scraper ring in relation to engine overoiling. | ||
| View original record | COPY FROM R. C. to Col. LHS. C. to Mr. Hives. C. to Mr. Sid. C. to Mr. Day ORIGINAL. R10/409.1.23. RE. OVEROILING. X4224 √4225 With reference to overoiling, we cannot under-stand why the bevel on the… | ||
| Scan87 | Difficulties of fitting chassis instruments from the back and recommending alterations. | ||
| View original record | TO DJ. & EY. FROM R. c. to ROY. HS. ORIGINAL R1/M19.1.23. RE. CHASSIS INSTRUMENTS. X4163 X4067 The instruments on the board need only be fitted at the front where there are connections to make which… | ||
| Scan88 | Decision to revert to side-position change speed levers for the Goshawk chassis, discontinuing the central change system. | ||
| View original record | TO Ed FROM R. c.c. to CJ. LHD. c. to EY. c. to HS. HPT G. to Mr Day ORIGINAL RE. CENTRAL CHANGE GEAR. X4252 I understand from Mr. Johnson that there is no desire now for front wheel brakes on the… | ||
| Scan89 | Ignition plug performance, pre-ignition issues, and potential design improvements. | ||
| View original record | TO R.I. FROM R. [Text crossed out] C. to O.J. H.S. [Text crossed out] C. to G.T. [Text crossed out] C. to H.S. [Text crossed out] C. to R.H. PAY [Text crossed out] IGNITION PLUGS. The last Goshawk… | ||
| Scan90 | Implementation of a double ignition system and a new 3-position switch for Goshawk models. | ||
| View original record | TO BJ & BY. FROM R. Hs c. to CJ. IHS. c. to WOR. LPC. c. to HS. -DA. c. to E.P. BP. X3485 RE. IGNITION. [STAMP: ORIGINAL RECEIVED 28 ... 1923] Naturally we should prefer to fit all our cars with… | ||
| Scan91 | Coil case design, coil positioning, and wiring for improved reliability. | ||
| View original record | (2) we substitute does not decrease the efficiency of the coil. We have made a design for this coil case which can be much more easily made in stabilite than the present one with the square base. This… | ||
| Scan92 | Production engineer's visit discussing body vibrations, booming sounds, and construction materials for the Goshawk chassis. | ||
| View original record | TO BJ. FROM R. c. to CJ. LHS. c. to BY. WOR. c. to HS. EP. c. to E. DA. RE. PRODUCTION ENGINEERS VISIT TO WW. ON 16.1.23. X3730 X634 WOR. BY. and EP. were here on a visit on the 16th, to discuss the… | ||
| Scan93 | Attachment of the dashboard to the scuttle and comparing the design to Daimler's. | ||
| View original record | (2) of the bolts, and under the head of the bolts. This is exactly the same scheme as we have long used for the attachment of the dashboard to the scuttle. I do not think it is practicable to leave… | ||
| Scan94 | The design and procedure for a rig to test the trunnions of a 40/50 steering box. | ||
| View original record | TO SY. & HS. FROM DA. c. to Ed. WOH. ORIGINAL DA3/M19.1.23. X3465 x We send herewith N.sch. 1371 shewing a rig which Mr. Royce would like made to test the efficiency of a method of carrying the… | ||
| Scan95 | Design modifications to prevent a tube from splitting, including reinforcing an aluminium part with steel bolts. | ||
| View original record | TO RO. FROM R. Hs ORIGINAL R4/1A9.1.23. X4220 JAN 24 1928 RECEIVED This matter was discussed with BY. and it was agreed that pressure caused by [stamp obscures text] acting upon the cap jammed the… | ||
| Scan96 | Pencil sketch showing two views of a mechanical component. | ||
| View original record | [ "4 / 9.2.26", "2" ], | ||
| Scan97 | Assessment of the S.Goshawk 11's performance, focusing on its silent operation and potential modifications. | ||
| View original record | TO RJ. FROM R. c. to AL. LHB. c. to EV. MOR. c. to HS. HD. c. to HA. HA. ORIGINAL Hs JAN 23 1923 R11/AC9.1.23. GENERAL. X4219 X4250 X790 From S.Goshawk 11. (Gwynne all-weather body) I have concluded… | ||
| Scan98 | Mr. Royce's preference for a dull finish on spanners. | ||
| View original record | TO BY. FROM E. c. to CJ. c. to HS. c. to FP. [Struck through] [Stamp] ORIGINAL E1/M26.1.23. RE. FINISH OF SPANNERS. X1027 [Handwritten and struck through] Referring to the sample spanners you left at… | ||
| Scan99 | Results from testing Delage springs and correcting the pitch angle of a worm helix. | ||
| View original record | R.R. 285A (100 T) (S.H. 159, 11-8-20) G. 2800 ORIGINAL TO HS. FROM DA. DA2/M26.1.23. X3525 X2628 We meant to have asked you yesterday whether you had had any results from weakening the Delage springs,… | ||
| Scan100 | Abandoning the 'Stork' and 'Heron' models and repurposing parts for the experimental 'Seagull' model. | ||
| View original record | TO WCR & HY. FROM R. CONFIDENTIAL R1/M26.1.23. C. to CJ. BJ. W. C. to HB. RA. W. Y/3548 For commercial reasons it has been decided to abandon the "Stork" and "Heron". This is a great disappointment… | ||
| Scan101 | The 'Seagull' cylinder block, head gasket, and alterations, explaining the design choice of casting it in two groups of three cylinders. | ||
| View original record | TO BX. FROM E. ORIGINAL E1/M27.1.23. c. to GJ. c. to HS. "SEAGULL" CYLINDER BLOCK, CYLINDER HEAD X9050 GASKET, AND ALTERATION TO HEAD. We send you herewith drawings Nos. Lec 1672 and 1673, showing the… | ||
| Scan102 | Requesting information and outlining tests on road springs, as per Mr. Royce's instructions. | ||
| View original record | R.R. 285A (100 T) (S.H 159. 11-8-20) G. 2800 ORIGINAL. DA2/M27.1.23. TO HS. FROM DA. RE. ROAD SPRINGS. [Handwritten: X2628 / | ||
| Scan103 | Mr. Royce's comments on proposed alterations to an American chassis. | ||
| View original record | TO BJ. FROM E. c. to GJ. MOR. c. to HS. c. to HY. BA. RE. ALTERATIONS TO AMERICAN CHASSIS. X3614 In reply to your memo. HJ/PY5/D15123., would you kindly note Mr. Royce comments as follows:- (1) AIR… | ||
| Scan104 | The change of material for pivot thrust washers from fiber to Genelite. | ||
| View original record | (2) (6) PIVOT THRUST WASHERS CHANGE FROM FIBER TO GENELITE (ALT. 3210/A.) Mr. Royce sees no objection to trying genelite for the pivot thrust washers, and Mr. Hives should test. ---------- We think… | ||
| Scan105 | The 'Seagull' frame side members and associated drawings. | ||
| View original record | TO BY. FROM DA. c. to GJ. c. to HS. c. to WOR. ORIGINAL. DA1/M27.1.23. RE. "SEAGULL" FRAME SIDE MEMBERS. X9390 We send herewith N.sch. 1373 showing the quarter size detail of the frame side members.… | ||
| Scan106 | 40-mile road test of the '4. Goshawk' car, providing feedback on steering and carburation. | ||
| View original record | R.R. 585A (100 T) (S.H. 159. 11-8-20) G. 2800 TO HS FROM R. c.c. to CJ. BJ. PN. c. to WOR.BY. EP. ORIGINAL RE. 4. GOSHAWK. X4219 On Sunday I took this car about 40 miles and was very pleased with it's… | ||
| Scan107 | Page detailing suggestions for a car's throttle, tool bag, cutout, dashboard lights, dynamo, and paint. | ||
| View original record | (2) the throttle will open wide. I do not want this to be gradual, but distinctly a two stage springing, so that one can definitely fell when one arrives at the end of the first stage of opening.… | ||
| Scan108 | Issues with a car's starter motor and ignition plugs, and arranging its transport to France. | ||
| View original record | (3) I think it would be better for this car to leave any time now for the Works, so that it can be fitted up for going to France, after which it can come here with Bullamore, to be loaded, with a few… | ||
| Scan109 | Sending drawings for the Seagull dynamo and reducing its external carcase size. | ||
| View original record | R.R. 285A (100 T) (S.H. 159. 11-8-20) G. 2800 ORIGINAL TO EFC. & BY. FROM R. C. to Mr. STENT. Y4010 SEAGULL DYNAMO. With reference to the Seagull dynamo we will send further particulars, and… | ||
| Scan110 | Alterations and improvements to steering mechanisms, including the rejection of 'Jacob's gear'. | ||
| View original record | TO CY. FROM R. c. to CJ. BJ. (Struck through) c. to HY. HS. (Struck through) c. to EY. DA. (Struck through) RE. STEERING. I was very pleased to receive your notes re steering mechanism. We are making… | ||
| Scan111 | The correct procedure for drilling and bushing the holes in the top leaf of springs. | ||
| View original record | ~~TO BY~~ FROM R. C. to ~~WS~~ C. to ~~OJ~~ C. to ~~WOH~~ C. to ~~HS~~ C. to ~~MP~~ ORIGINAL. R7/M29.1.23. RECEIVED STAMP: HS JAN 31 1923 SPRINGS. X2628 With reference to your BY9/P22123., I certainly… | ||
| Scan112 | Use of case-hardened steel to prevent wear and the critical importance of spring alignment. | ||
| View original record | (2) To prevent this wear we think that no- thing but case-hardened steel faces should be used where-ever possible, the reason being that copper or brass or even soft steel will get impregnated with… | ||
| Scan113 | Technical policy regarding chassis reliability and repair strategy, contrasting with American and Ford models. | ||
| View original record | TO C.J. FROM R. C. to D.F. CH. C. to F.H. ROYCE. C. to H.S. ORIGINAL R9/M29.1.23. Hs RECEIVED JAN 31 1923 TECHNICAL POLICY. X/3165 X/801 We want to continue our distinctly different policy to the… | ||
| Scan114 | Car bodies for the Goshawk model, proposing a new design based on a successful Hooper open-tourer. | ||
| View original record | TO LHS. FROM R. c. to SJ. BJ. [SJ is struck through] c. to HS. [HS is struck through] [STAMP: ORIGINAL] [HANDWRITTEN: Hs] [STAMP: JAN 31 1923] [STAMP: RECEIVED] R3/M29.1.23. LIMOUSINE BODY ON GOSHAWK.… | ||
| Scan115 | Passenger access, body dimensions for the Goshawk chassis, and the causes of 'booming' sounds in car bodies. | ||
| View original record | (2) near side. It is unreasonable to expect the passengers of the rear seats to crawl over the front seat. It would be far better for the one passenger of the front seat to have to climb over his own… | ||
| Scan116 | Suggesting modifications to the Goshawk Dynamo's field winding and control brush to improve output. | ||
| View original record | R.R. 235A (100 T) (S.H. 159. 11-8-20) G. 2500 TO EFC. FROM R. ORIGINAL R1/M29.1.23. c. to CJ. PN. BY. c. to HS. EP. c. to Mr. STENT. GOSHAWK DYNAMO. X4283 I certainly agree that a trial should be made… | ||
| Scan117 | Design change to the Goshawk ignition coil to incorporate mouldensite insulation. | ||
| View original record | R.R. 235A (100 T) (S.H. 159, 11-8-20) G. 2800 ORIGINAL TO EFC. FROM R. c. to CJ. WOR. c. to PN. BY. c. to EP. HS. R6/M29.1.23. RECEIVED JAN 31 1923 GOSHAWK IGNITION COIL. With reference to your… | ||
| Scan118 | Prioritizing the 'Seagull' project, fearing delays from 'Stork' & 'Heron' chassis work, and noting concerns about front wheel brakes. | ||
| View original record | TO HS. FROM R. c. to CJ. BJ. c. to WOR.BY. RE. "STORK" & "HERON" CHASSIS. X9770 With reference to your Hsl/LG29123., I fear these might delay "Seagull" at Derby. I prefer to use every hour of energy… | ||
| Scan119 | Reliability of the Bijur starter drive compared to the Bendix drive. | ||
| View original record | R.R. 235A (100 T) (S.H. 159, 11-8-20) G. 2800 TO HS. from R. c. to CJ. BY c. to E. DA ORIGINAL Hs FEB 1 1928 RECEIVED R3/M31.1.23. BIJUR STARTER DRIVE. X3587 In reply to your Hs4/LG29123., it is no… | ||
| Scan120 | Agreeing to standardise a modification for the Goshawk ignition coils. | ||
| View original record | R.R. 285A (100 T) (S.H. 159, 11-8-20) G. 2800 ORIGINAL TO EFC. from R. c.c. to BY EP. E. R5/M31.1.23. X.4079 - GOSHAWK IGNITION COILS. Referring to your EFC2/T29123, concerning the ½" larger coil,… | ||
| Scan121 | Maintenance and limitations of Goshawk 11 universal joints. | ||
| View original record | R.R. 235A (100 T) (S.H. 159, 11-8-20) G. 2800 TO HS. from R. c. to CJ. BY. c. to E. DA. ORIGINAL R2/M31.1.23. GOSHAWK 11. UNIVERSAL JOINTS. X4254 Replying to your Hs3/LG29123, we regret we cannot do… | ||
| Scan122 | Telegram from Royce regarding engine alterations and an oil leak. | ||
| View original record | R.R. 144A (100B.) SE 867. 9.7.18 MP 193871. ORIGINAL. ROLLS-ROYCE, LIMITED. Co. 31 JAN 1923. TELEGRAM RECEIVED BY TELEPHONE. Xu249. RECEIVED. Time Received: 3-0. Date: 31-1-23. To: Ryecw by. By:… | ||