Rolls-Royce Archives
| Identifier | Entry | ||
| Scan001 | Note about an insulated switch fitted to a steering column for a 6 volt coil. | ||
| View original record | X.1413. Wor/Mcr2/L4610. R. Insulated switch has been fitted to the Steering column of the above car for use with the 6 volt coil since it was last with you. Mcr. | ||
| Scan002 | The testing and implementation of a 6-volt ignition coil, including wiring recommendations. | ||
| View original record | R.R. 295A / 100 T. (S.G. 648, 19-2-10) G 5618 X.1413 From Exp. Dept. c. J. c. R. c. E. c. Na. Wor/EHS/B27714. 27.7.14. X.562 - REPORT ON 6 VOLT COIL. X.3761. X.1413. X.3647. X.3374. X.1520. This has… | ||
| Scan003 | Issues with connecting ignition to batteries and the solution of making their own dynamos. | ||
| View original record | Wor/EH5/B27.7.14. -2- Sheet 2. to object to us connecting our ignition up to their battery, These troubles will disappear when we make our own dynamos. EH. | ||
| Scan004 | Instruction sheet for fitting an experimental insulated ignition switch, requiring modifications to the engine guard and steering gear shield. | ||
| View original record | R.R. 300 (5 m) (W.W. 298. 18.5.14) E.P. 6632. ROLLS-ROYCE LIMITED. INSTRUCTIONS. 25354 To O.O. Copy & BRM/H914 Order No. Customer's No. Re Fitting of Exp Insulated Ignition Switch X.1413. to STANDARD… | ||
| Scan005 | Instruction sheet regarding the creation of patterns for steering control gear from B prints. | ||
| View original record | R.R. 300 (6 m) (VV. 8a. 18.11.13) E.P. 5398. 18100 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: Mr Mercer Copy to A.E.M. 11/9/14 19 Order No. 522 11.9.14. Customer's No. X1413 Re: Steering Control Gear… | ||
| Scan006 | Instruction sheet regarding the substitution of a part for the steering mechanism. | ||
| View original record | INSTRUCTION SHEET 14.12.14. Mr. Mercer. RE STEERING MECHANISM. X. 1419. NORTHCLIFFE-WILL IAMSON. The switch operating rods quoted for these chassis were F. 5596/7 X. 1419. I learn from Mr. McMillan… | ||
| Scan007 | Development, testing, and standardization process of a 6-volt coil. | ||
| View original record | X.1413 R.R. 238A (100 T) (S.G. 645, 19-2-20) G. 2618 Wor. Wor/Mcr5/L13.1.15. 13.1.15. X.562 - RE 6 VOLT COIL X.3647 X.1413. X.3761. X.3762. The position of this experiment is as follows. Mr. Royce… | ||
| Scan008 | Delay in parts with ebonite-e insulation and the plan to fit a switch to Mr. Royce's next car, 49-GB. | ||
| View original record | R.R. 293A (100 T) (S G 849. 12-5-20) G 2818 Contd. -2- Wor/Mcr5/L13.1.15 (X.1413) was instructed up a considerable time ago but Mr. Matthews states that he is awaiting the return of parts which the… | ||
| Scan009 | The supply of parts for the Northcliffe & Williamson Ignition Switch. | ||
| View original record | ROLLS-ROYCE LIMITED, NIGHTINGALE ROAD, DERBY. TELEGRAMS: "ROYCAR," DERBY. TELEPHONES: 476 (Four Lines). Re Northcliffe & Williamson Ignition Switch. X. 1413. 14th. January, 1915. O.O. We give below a… | ||
| Scan010 | Chasing an overdue delivery of insulated segments for a Northcliffe & Williamson Ignition Switch. | ||
| View original record | R.R. 657. (100H) (WW. 968. 17.11.14.) E.P. 7393. ROLLS-ROYCE LIMITED, NIGHTINGALE ROAD, DERBY. TELEGRAMS: "ROYCAR," DERBY. TELEPHONES: 476 (FOUR LINES). Wor/Mcr16/122115. Names and Indicating letter.… | ||
| Scan011 | Arrival of insulated segments for a Northcliffe & Williamson Ignition Switch. | ||
| View original record | R.R. 657. (100h) (WW.742. 5.9.14.) E.P. 7191. ROLLS-ROYCE LIMITED, NIGHTINGALE ROAD, DERBY. TELEGRAMS: "ROYCAR," DERBY. TELEPHONES: 476 (Four Lines). Names and Indicating letter. Initial of person… | ||
| Scan012 | To Mr Matthews regarding the urgent need to locate returned parts for a Northcliffe & Williamson Ignition Switch. | ||
| View original record | Wor/Mcr7/L26115. Re Northcliffe & Williamson Ignition Switch. X.1413 26.1.15. Mr Matthews. We informed you on 22/1/15 that the special insulated segments were due for return to the Works on January… | ||
| Scan013 | Instruction sheet detailing experiments incorporated on chassis 49 GB. | ||
| View original record | Copy of Instruction Sheet No. 28164. S.&.D.N. 3 / 15 Mr. Mercer. Re Chassis 49 GB. The following experiments have been incorporated on this car:- Rudge Whitworth Wire Wheels. A. 421. Arr. Drg. Oil… | ||
| Scan014 | Note regarding an insulated switch fitted to the steering column of chassis 1920. | ||
| View original record | 28181. MAR 11 '15 Fitted to chassis 1920 (10-3-15). Insulated switch fitted to steering column. (end) H.C. Matthews DC1410. | ||
| Scan015 | Letter discussing alternative schemes for charging ignition accumulators, referencing a suggestion from a Mr. Crampton. | ||
| View original record | X.1413 Wor/HyS/L13415. Re Letter from Mr. Crampton concerning Ignition Accumulators X.664. X.1520. X.1911 X.1413. J. 13.4.15. With reference to Mr. Crampton's suggestion that we charge the ignition… | ||
| Scan016 | Fault where an engine could be started by switching on the lights, and its resolution using a two-pole insulated switch. | ||
| View original record | Contd. -2- Wor/Hy 3 L13415. trouble and this was that sometimes the engine could be started by switching on one of the electric lights, and as this might in some cases be dangerous we did not propose… | ||
| Scan017 | Challenges and solutions for recharging ignition accumulators using the car's lighting battery. | ||
| View original record | X.1413 R.R. 238A (100 T) (S.G. 643. 19-2-20) G 2618 R1/IB19415. To J. from R. c. Na. c. By. c. Da. X.1911. X.1413. X.1520. X.562. X.664 - RE CHARGING IGNITION ACCUMULATORS. For several years I have… | ||
| Scan018 | Continued memo discussing a missed opportunity for cost savings related to accumulators. | ||
| View original record | R.R. 288A (100 T. (S.G. 648) 19-2-20) G. 2818 Contd. -2- R1/IB19415. I did not realise that it was not already in use, or may have pushed it harder, as it would save much money for accumulators during… | ||
| Scan019 | Short internal memo confirming that an Insulating Switch has been fitted to chassis 49 GB. | ||
| View original record | G21415 Mer R. C.J. 21.4.15. Da1/G21415. In reply to your letter to Mr. Johnson - RL/IB19415 re the Insulating Switch, this has been fitted to 49 GB for some little while now. Da. [Signature] | ||
| Scan020 | Explaining the delay in producing an insulated ignition switch for a 6-volt coil due to outsourcing issues. | ||
| View original record | Wor/Mcr4/L22415. Re Ignition Switch for 6 volt coil. X.1413 J. 22.4.15. In reply to your memo CJ11/IW20415 and the attached correspondence, we wish to explain that the delay on this job was not due to… | ||
| Scan021 | Complaint from Mr. Royce regarding a delay on the Ignition Switch for a 6 volt Coil, and a request for a report. | ||
| View original record | Wor/Hy5/L22415. Re Ignition Switch for 6 volt Coil. X.1413. Hy. 22.4.15. Mr Royce complains that the Works do not seem to take much interest in this Switch although the standardisation of the 6 volt… | ||
| Scan022 | Inquiry regarding the delivery timeline for an insulated ignition switch for several cars, including 49GB. | ||
| View original record | COPY. To By) from R. " Da) Copy to J. " " Na. " " Wor. for Hy. [Handwritten: 12515] [Handwritten, faint: DUPLO] R10/IB7515. May 7th. 1915. Re Insulated Ignition Switch. Will you please let me know how… | ||
| Scan023 | Satisfactory road test of an ignition switch for a 6-volt coil, recommending further testing before standardisation. | ||
| View original record | R.R. 637. (100ll) (SA. 333. 26.2.15.) E.P. 8140. ROLLS-ROYCE LIMITED, NIGHTINGALE ROAD, DERBY. TELEGRAMS: 'ROYCAR,' DERBY. TELEPHONES: 476 (Four Lines). Wor/Mcr7/L3615. Names and Indicating letter.… | ||
| Scan024 | Report on an ignition switch for a 6 volt coil. | ||
| View original record | R.R. 647 (100 H.) (U.U. 904-27-7-14.) B. & H. 2192. ROLLS-ROYCE LIMITED, 14 & 15, CONDUIT STREET, LONDON, W. TELEPHONES: 1654, 1655, 1656 (GERRARD) TELEGRAMS: "ROLHEAD," REG., LONDON. Names and… | ||
| Scan025 | Proposing the standardization of an insulated battery switch fitted on the steering column. | ||
| View original record | R.R. 235a (500 T) (S.D. 408. 26-4-17.) Bm. 2/156/13. X. 1413. Wor/Hyl/L.615. To R. from Hy. c. to J. S 58 N.A. ------ Insulated battery switch on steering column for use with 6 volt coil, worked off… | ||
| Scan026 | The experimental fitting of an insulated ignition switch to a chassis. | ||
| View original record | R.R. 252a (500 H) S.A. 820. 26-5-15 G. 1004. Re. Insulated Ignition Switch. X1413. Mcr. EP25/T/W6715. With reference to the above, we shall be glad if you will give us details of this experiment, as… | ||
| Scan027 | Explaining the safety reasons and necessity for using an insulated ignition switch. | ||
| View original record | Re Insulated Ignition Switch. X.1413. EP. Wor/Mcr7/L8715. 8.7.15. In reply to your memo EP25/T/W6715, we wish to explain that the above switch was designed for use with the 6 volt coil, the raison… | ||
| Scan028 | Internal query regarding the status of an ignition switch for a 6-volt coil. | ||
| View original record | ROLLS-ROYCE LIMITED, 14 & 15, CONDUIT STREET, LONDON, W. TELEPHONES : 1654, 1655, 1656 (GERRARD) TELEGRAMS : "ROLHEAD," REG., LONDON. CJ3/C5815 Names and Indicating letter. Initial of person… | ||
| Scan029 | And handwritten notes regarding a report on an experiment for an Ignition Switch for a 6 volt Coil. | ||
| View original record | Ignition Switch for 6 volt Coil. X.1413 J. 12.8.15. Wor/Hy1/L12615. In reply to your memo CJ3/C5815, I attach herewith my report on this experiment (Wor/Hy2/L12815). Handwritten text: Hy. [signature]… | ||
| Scan030 | Insulated ignition switch for a steering column, recommending its standardisation. | ||
| View original record | To J. } from Hy. ~~R.~~ Copy to E. ~~By.~~ ~~Ne.~~ Wor/Hy2/L12815. August 12th. 1915. Report on Insulated Ignition Switch for Steering Column. X.1413. This ignition switch is similar to the present… | ||
| Scan031 | Short memo confirming that car 56NA, currently with Mr Royce, has been fitted with a particular system. | ||
| View original record | To J. & R. from Hy. 2. Wor/Hy2/L12815. Car 56NA which is now with Mr Royce is fitted up with this system. Hy. | ||
| Scan032 | Three proposed changes for the ignition system, relating to the switch insulation, coil voltage, and a two-way battery switch. | ||
| View original record | COPY. X.1413 Copy for X562 To J. from R. R8/IB19815. August 19th. 1915 [Handwritten in red ink:] Proceed with standardisation and Report Sgd B.J.H My dear J: X.805 Re Ignition Switch for 6 volt Coil.… | ||
| Scan033 | Ignition Switch for a 6-volt coil, containing instructions to proceed with standardisation papers. | ||
| View original record | Ignition Switch for 6 volt Coil. X.1413. No. 24.8.15. Wor/Mcr4/L24815. By. We attach herewith a copy of RG/IB19815. will you kindly note that on the original of this memo Mr Johnson has written :-… | ||
| Scan034 | Seeking clarification on designing or procuring a new two-way ignition switch. | ||
| View original record | Mor To R. from By. Copy to J. 17th September, 1915. By1/G17915. 1415 RE STANDARDISATION OF 6 VOLT COIL & INSULATED IGNITION SWITCH FOR STEERING COLUMN. Referring to your note on the standardisation… | ||
| Scan035 | Standardisation of an ignition switch for a 6 volt coil. | ||
| View original record | Re Ignition Switch for 6 volt Coil. J. 18.9.15. Wor/1 crl/L18915. We return herewith the correspondence on the above, and in reply to your memo CJ20/IW16915 attached, we have to report that Mr Bailey… | ||
| Scan036 | Fitting an experimental insulated ignition switch to an engine. | ||
| View original record | M13 Extract from Works A.P. 21915 filed in A.1000. ~~~~~ To R.y. Re. 49 J.B. ~~~~~ We shall be able to fit the following experimental part to the above engine :- Insulated Ignition Switch [Signature] | ||
| Scan037 | Note specifying a three-cell battery, 6-volt lighting, and a six-volt Carpentier trembler coil for a car fitted with a Ryan dynamo. | ||
| View original record | Extract from N/21/S/B/22/y10 41B re 19 G B This car being fitted with the Ryan 6 volt dynamo will only have a three cell battery & a 6 volt lighting job. Also a six volt coil with no 2 way switch &… | ||
| Scan038 | Response to a memo from Mr. Royce, approving a 'Volt scheme'. | ||
| View original record | 413 Extract from Roy G / 14 / 29.9.15 99 CA. ref 49 G by Referring to Mr Royce's memo R 12 / 818 / 29910. I consider the possibilities are as follows:- Paragraph 6 This Volt scheme is O.K. Rcy | ||
| Scan039 | Standardisation of a 6-volt coil and insulated ignition switch for the steering column. | ||
| View original record | b/10 To R. From By. Copy to J. 7th October, 1915. By10/G71015. RE STANDARDISATION OF 6 VOLT COIL & INSULATED IGNITION SWITCH FOR STEERING COLUMN. Please receive herewith rough scheme of proposed… | ||
| Scan040 | Use of a Lucas junction box and its electrical contact requirements. | ||
| View original record | To R. from EFC. c. to CJ. c. to Bn. c. to Da. X.1413. EFC4/T24.5.19. LUCAS JUNCTION BOX. X.3564 X.3558 X.3014 X.3344 X.3560 Further to our EFC8/T22.5.19., we are now sending you a blueprint of N… | ||
| Scan041 | Design of the vibrator regulator and relay current circuits. | ||
| View original record | Contd. -2- EFC4/T24.5.19. [crossed out] X 3560 [/crossed out] When we finally come to the vibrator regulator control it would not be so necessary to have three contacts, because the dynamo voltage… | ||
| Scan042 | Notice regarding an insulated switch on the steering column for the 7CA model. | ||
| View original record | Extract.-EFC1/MP51016. X.1413.-INSULATED SWITCH ON STEERING COLUMN. The above is at present fitted to 7CA. | ||
| Scan043 | To Mr. Coverley regarding a print for an insulated ignition switch. | ||
| View original record | To Mr. Coverley. from EFC. EFC4/14.8.19. 1413 X.3434- INSULATED IGNITION SWITCH. Herewith please receive print of F.6691 in connection with the above. EFC. R.R. 255 A (200 T) (S) F. Co. 22-5-19. C… | ||
| Scan044 | List of new parts for a 40/50 chassis, detailing their standardization status and implementation agreement. | ||
| View original record | Contd. -3- X.1413 EH1/LG27. 8.19. NEW PART WHETHER STANDARDISATION SHEET SIGNED. Fitted to 40/50 Chassis 27. Wiring Arrangement. | No 28. New High Tension Wiring Tube. | Standardised 7-4-19 29.… | ||
| Scan045 | Alteration to the starter motor relay circuit and its switch, based on Mr. Royce's directive. | ||
| View original record | X.1413 To Da. from RFC. c. to Bn. c. to EP. c. to EP. for Mr. Wyer. c. to EH. [handwritten] X 3082 RE STARTER MOTOR RELAY CIRCUIT AND [strikethrough] STEERING COLUMN SWITCH. [/strikethrough] We are… | ||
| Scan046 | Instructions from Mr. Royce regarding the starter motor relay circuit and steering column switch. | ||
| View original record | R R 235 s (200 T) (S P 674 22-5-19) G 2376 X.1413. To BY. from Bn. c. to CK. c. to Da. Bn15/W/1019. RE STARTER MOTOR RELAY CIRCUIT AND STEERING COLUMN SWITCH. I attach copy of EFC3/T41019. which was… | ||
| Scan047 | Notification of alterations 1612/N and 1618/N to the 40/50 Chassis Wiring Diagram N.1293. | ||
| View original record | BY from DA. RHC To Ck & 1 print. X.1413. X.2778 X.1413 (struck through) DA/STT3/EFG.10.19. (1) Please receive herewith 2 Blue Prints of N.1293 40/50 Chassis Wiring Diagram embodying alterations 1612/N… | ||
| Scan048 | Danger of engine fire due to a sparking low-tension wire near a flooded carburettor. | ||
| View original record | X.1413 Da. from EP. c. to En. c. to Hs. c. to By. c. to Ck. EP1/F8.3.20. X.3129. X.1413. RE. DANGER OF FIRE TO THE ENGINE. X.2778b. X.802. We have had experience of an engine catching fire, the cause… | ||
| Scan049 | Risk of sparks from a live battery ignition switch terminal and a proposed solution to insulate it. | ||
| View original record | X.1413 ToDa. from EFC. c. to De/Thr. EFC9/T31.12.20. X 1413 BATTERY IGNITION SWITCH TERMINALS. X 3129 Even when the ignition is switched off, one of the terminals of the insulated battery ignition… | ||
| Scan050 | Confirming instructions have been passed to the Buying Department regarding the battery ignition switch terminals insulating thimble. | ||
| View original record | X1413 EFC from Da/Thr, 2.6.21. X.1413 - BATTERY IGNITIONSWITCH TERMINALS. INSULATING THIMBLE. This has been fully instructed to By's Dept. As far as we are concerned it is finished. EFC Da/Thr, W.R. &… | ||
| Scan051 | The fire danger of the steering column switch. | ||
| View original record | EWT. to BY. c. to Hs. c. to Thn. X1413 EWT7/FG20.7.21. X.4202 RE. FIRE DANGER OF STEERING COLUMN SWITCH. X.1413 Attached hereto is copy of letter from Springfield, reference OY2/G28.6.21 with… | ||
| Scan052 | Letter from Rolls Royce of America Inc. concerning the fire danger of a steering column switch and suggesting alternative solutions. | ||
| View original record | COPY. Mr. Fadin. Mr. Bagnall. Mr. Hulley. Mr. Southern. Mr. Caswell. June 28th. 1921. CY2/G28.6.21. Mr. Claude Johnson, Managing Director, Rolls-Royce Ltd., London, England. Attention Mr. F. Royce and… | ||
| Scan053 | The investigation of battery ignition switch terminals and insulating thimble. | ||
| View original record | X.1413. R.R. 222m (100 T) (S.H. 798, 10-12-20) G. 2048 EFC/T10.8.21. X.1413 @ BATTERY IGNITION SWITCH TERMINALS + INSULATING THIMBLE. EY/HEB is looking into this matter, it having been instructed by… | ||
| Scan054 | Adaptation of a Goshawk Klaxon switch and control quadrant to the 40/50 chassis. | ||
| View original record | To EY. from Da. c. to CJ. c. to Wor. c. to Hs. X1413 Del/M29.8.22. RE. 40/50 CHASSIS. X.1413. We send herewith N.sch.1318 shewing the Goshawk 11. Klaxon switch adapted to the 40/50 control quadrant on… | ||
| Scan055 | Design of an auxiliary ignition switch for the 40/50 model to work with the locked switch box. | ||
| View original record | X.1413. Extract from RL/M10.1.23. With reference to the switching arrangements I think that when the magneto is fitted we ought to have an auxiliary switch that will cut out either of the ignitions. I… | ||
| Scan056 | Specification for a three-position ignition switch for the 40/50 and 20 HP models. | ||
| View original record | X1413 R4/M13.1.23. TO Mr. Stent from R. c. to CJ. BJ. PN. DA. c. to E. Hs. BY. EFC. X1413 X3485 X3551 A switch is wanted for the 40/50, and sometimes the 20 HP - small but very reliable, having three… | ||
| Scan057 | Dual ignition system for a Boshawk cylinder head, including the design of a three-position control switch. | ||
| View original record | Extract from. X1413 R6/M19.1.23. RE IGNITION X.3485. X.4560. X.4091. Now in the case of the Boshawk, the cylinder head is so small that 2 ordinary sized plugs cannot be fitted, but after Hs. had… | ||
| Scan058 | Letter from the American branch to Derby explaining the reasons for using a single ignition switch. | ||
| View original record | V/1413 ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. PERSONAL Oy2-W-22023 February 20, 1923. Mr. E. W. Hives, Rolls-Royce, Limited, Derby, England. Dear Hives: Ignition Switch Yours of January 31.… | ||
| Scan059 | Service issues with American Bosch magnetos and battery ignition systems, and proposing switch design improvements. | ||
| View original record | Oy2-W-22023 -2- We have fitted American Bosch magnetos since car 26, i.e., on 400 cars, and American Bosch battery ignition since 176, i.e., 250 cars. On magnetos we have had about three cases of… | ||
| Scan060 | The adaptation of a Bijur lighting switch for use as an auxiliary ignition switch for the 7-GII model. | ||
| View original record | X1413 To RHC. from EFC. c. Hs. EFC1/T8.3.23. X.1413. RE AUXILIARY IGNITION SWITCH FOR 7-GII. X.3485. We are handing you herewith an old Bijur lighting switch to be adapted as an auxiliary ignition… | ||
| Scan061 | Request to instruct the Works to construct a crankshaft torsion model from wood, wire and staples. | ||
| View original record | EA/B82814. D [Stamp: 27 AUG 1914 RECEIVED] 22nd August 1914. To Wor, for Mer. from E. Re Crankshaft torsion model. X1418 Will you please instruct the Works to make, to the attached sketch, a… | ||
| Scan062 | The construction of a crankshaft torsional model. | ||
| View original record | R.R. 657. (100H) (W.W. 605. 15.7.14.) E.P. 6964. ROLLS-ROYCE LIMITED, NIGHTINGALE ROAD, DERBY. TELEGRAMS: "ROYCAR," DERBY. TELEPHONES: 476 (FOUR LINES). Wor/Mcr18/L31814. Names and Indicating letter.… | ||
| Scan063 | Hand-drawn sketch of a wire crankshaft model intended for destructive testing. | ||
| View original record | RE E4 / B22814 STAPLES WIRE CRANKSHAFT WITH CRANKPINS IN SAME POSITION AS RR ENGINE & handles at each end as shown for the purpose of twisting the crankshaft to destruction. Scale - about 1/2 full… | ||
| Scan064 | Progress update on the Crankshaft Torsional Model. | ||
| View original record | R.R. 657. (100H) (WW.605. 15.7.14.) E.P. 6564. ROLLS-ROYCE LIMITED, NIGHTINGALE ROAD, DERBY. TELEGRAMS: "ROYCAR," DERBY. TELEPHONES: 476 (FOUR LINES). Names and Indicating letter. Initial of person… | ||
| Scan065 | Instruction sheet regarding a crankshaft torsional model. | ||
| View original record | R.R. 238 (24 B) (P.P. 776. 26.3.13) E.P. 3883. ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: Mr Hives Order No. Customer's No. Re Crankshaft Torsional Model - x 1418 Herewith wire model to plants [Signature]… | ||
| Scan066 | Handover and despatch of the Crankshaft Torsion Model X.1418. | ||
| View original record | WOR/Mer15/T10914. Re Crankshaft Torsion Model. X.1418. D. 10/9/14. Mr.Roney. Please note we have handed the crankshaft torsion model to Mr. Roney. Will D. kindly issue instructions to despatch to Mr.… | ||
| Scan067 | Instruction note for the despatch of a crankshaft torsion model to F.H. Royce. | ||
| View original record | R.R. 309. (12 S) (V.V. 301. 5.14) G. 9453. ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: Mr Roney, Mr Mureer. Order No. Customer's No. Re Despatch 1 Crankshaft torsion model X1418 to F.H. Royce Esq. South… | ||
| Scan068 | Production and dispatch of a crankshaft torsion model. | ||
| View original record | WOR/Mer16/M 0914. Re Crankshaft Torsion Model. X.1418. R. 10/9/14. With reference to the above, please note we have had the model made in accordance with Mr. Elliott's memo. - E4/B22814, and same is… | ||
| Scan069 | Results of crankshaft torsion tests on a 20 HP shaft, from its initial forging to the finished state. | ||
| View original record | To R: from Hs/Tsn. c. to BJ. Wor. c. to RC. E. c. to BY. X1418 Ha/Tsnl/LGS.12.27. CRANKSHAFT TORSION TESTS. X5010 Further to Hs/Rn/LGS.12.27. and Hs/Tsn/LGS.12.27 we are now giving fully the results… | ||
| Scan070 | Page discussing discrepancies in crankshaft stiffness calculations and the reinforcing effect of bearings. | ||
| View original record | contd : ‡ -2- This explains to some extent the apparent large over-estimation of the stiffness (15%) when approaching the finished condition. The large discrepancies in the opposite direction between… | ||
| Scan071 | Tests on crankshaft stiffness, deflection, and 'bell-mouthing' for various engine models. | ||
| View original record | contd :- -3- Std. Phantom 6.5% Sports Phantom 21.0% Std. 20 HP. 6.0% ********** the It appears that a shaft with crankpins as its weakest part is more prone to 'unwind' its throws, thus relying very… | ||
| Scan072 | Graph showing the deflection of a central journal when twisting a 20 HP crankshaft. | ||
| View original record | 20 H.P. DEFLECTION OF CENTRAL JOURNAL, WHEN TWISTING CRANKSHAFT. JOURNAL MOVEMENT - THOUSANDTHS OF AN INCH. UPWARDS DOWNWARDS DEGREES TWIST 9.12.27. | ||
| Scan073 | The reverse side of a document featuring a purple ink date stamp from the Derby office. | ||
| View original record | ROLLS-.... FEB PRINT 10 DEC 1927 DERBY | ||
| Scan074 | Graph of crankshaft torsion tests comparing torque vs. twist for various Phantom & 20 HP crankshaft configurations. | ||
| View original record | GRAPH 2. CRANKSHAFT TORSION TESTS. PHANTOM & 20 H.P. TABLE DATA: CURVE | CRANKSHAFTS & CONDITIONS | STIFFNESS LBS.FT./RAD 2 | STD. PHANTOM. SEVEN BEARINGS | 45,000 3 | STD. PHANTOM. BEARINGS 1-4-7. |… | ||
| Scan075 | Table of torsion test results for a 20 HP crankshaft from forging to finished shaft. | ||
| View original record | 20 H.P. CRANKSHAFT – TORSION TESTS. FORGING TO FINISHED SHAFT OPERATION, 15, 19, 21, 22, 31, 33A, 39A, FINISHED SHAFT MAIN-BEARINGS No 1, DIA, 2.200, -, -, 2.030, -, -, -, 2.000 No 1, LENGTH, 1.550,… | ||
| Scan076 | Graph showing the results of a 20 HP crankshaft torsion test, tracking changes from forging to the finished shaft. | ||
| View original record | FORGING DIMENSIONS (AVERAGE) A 2.375" JOURNALS B 1.900" CRANKPINS C 1.100" WEB (THICK) D 1.350" TO INSIDE FLASH E 1.200" OUTSIDE FLASH F 2.550" WEB WIDTH G 4.625" CRANK 2.250" CRANK RADIUS 20 H.P.… | ||
| Scan077 | Blank, folded document page with a purple 'Print Room' date stamp. | ||
| View original record | ROLLS-ROYCE, LIMITED PRINT ROOM 10 DEC 1927 DERBY | ||
| Scan078 | Responses from the Chief Engineers of Sunbeam and Vauxhall to an article about the 'Battle of the Valves'. | ||
| View original record | THE AUTOCAR, August 1st, 1914. 229 The Battle of the Valves. Replies by the Chief Engineers and Designers of the Sunbeam and Vauxhall Companies to Mr. C. Y. Knight's Article under the above title,… | ||
| Scan079 | Paper on poppet valve design, discussing seat widths, side thrust, and the effects of carbon on valve seatings. | ||
| View original record | Poppet Valve Design. Considerations of Seat Widths, Side Thrust from Unbalanced Spring Pressure, and Other Matters affecting Quietness of Running, Efficiency, and Cost of Upkeep. By Robert Jardine IN… | ||
| Scan080 | Article discussing side pressure on valve stems and poppet valve design. | ||
| View original record | THE AUTOCAR, October 31st, 1914. 645 Poppet Valve Design in order to get the reamer to cut it might be necessary to cut under that hard surface, and therefore to remove more metal than would be… | ||
| Scan081 | Forwarding a circular about the 'Apex' Priming & Compression Valve from W. Edward Storey. | ||
| View original record | X497 Hs. from Wd. c. to Da. c. to BY. c. to Ms. Wd6/NJ12.10.20. "Apex" Priming & Compression Valve. W. Edward Storey, M.I.M.E. Granville House, Arundel Street, London W.C.2. Herewith I send you (Hs.)… | ||
| Scan082 | Arranging an interview with the patentee's representative for a Micrometer Valve Adjustment Device. | ||
| View original record | X1497 [Stamped initials S/W FHS] CMS11/CML7.5.23. Mr. Watson, who represents the interests of the Patentee of the Micrometer Valve Adjustment Device, as details herewith, would very much like to have… | ||
| Scan083 | From Hs. to CMS regarding a proposed visit to Derby by Mr. Watson. | ||
| View original record | W/S. CMS. from Hs. 41497 Hs2/LG23.5.23. Referring to your memo. ref. CMS11/CM17.5.23 We do not consider it would serve any useful purpose for Mr. Watson to come to Derby. The pamphlet which you have… | ||
| Scan084 | Properties and use of aluminium bronze for inserted valve seats, quoting the S.A.E. journal. | ||
| View original record | To R. from E. c. to BJ. c. to RG. c. to Hs. c. to BY. X1497 E1/M27.9.26. ALUMINIUM BRONZE INSERTED VALVE SEATS. X.6060 X.1497 X3822 The following information appears in this months journal of the… | ||
| Scan085 | Follow-up request for test results and an opinion on valve springs from the Anglo American Steel Company. | ||
| View original record | X1497 S/W. (Hs.). Cx/DH18/CM19.10.26. A short time ago you had sent to you by the Anglo American Steel Company, Limited, some valve springs, which they were anxious that you should test. They have… | ||
| Scan086 | Composition of 'Ochromite' valves and a proposal to order a set for the Condor engine. | ||
| View original record | 4166 (crossed out) 41497. c.HS. BY33/H. 9.6.27. "OCHROMITE" VALVES. I regret overlooking the above matter. I find that the "Ochromite" valve was bought in U.S.A. through Rolls Royce of America Inc. I… | ||
| Scan087 | Request to manufacture dummy valves in aluminium for testing valve shapes for efficient induction. | ||
| View original record | X149M. To RHC. from Hs/Rm. Hs/Rm2/LG19.10.28. Attached hereto is a sketch of some dummy valves we require for testing the best valve shape for efficient induction. Will you please make one off each in… | ||
| Scan088 | Variations in the Brinell hardness of aluminium bronze valve seatings and proposing tests on a harder material. | ||
| View original record | Hs. C.R.M.C. C. a/M.C. N497. BY/EM2/K. 18. 7. 29. ALUMINIUM BRONZE VALVE SEATINGS. With regard to your note and HL's report HLL/EA16.7.29. kindly note that we have been looking into the question of… | ||
| Scan089 | Cause of noisy valve gear due to manufacturing inaccuracies of the cam toe. | ||
| View original record | x1497 E. from As/Rm. Hs/Rm.7/KT. 27.3.33. NOISY VALVE GEAR. We think that there is no doubt that the valve gear is noisy because of the fact that in manufacture they do not produce the cam toe as… | ||
| Scan090 | Engine improvements by increasing inlet valve area and cylinder count for greater power output. | ||
| View original record | -2- per cylinder. The 40/50 already has the largest possible single valves. The inlet valve area could be increased 4/3 by using two valves. Increasing the area by this means might, by virtue of the… | ||
| Scan091 | Engine valve particulars and their effect on performance across different models. | ||
| View original record | Y1097. To E. from Hs/Gry. c. to Rg. Hs/Gry. 2/KT.18.5.33. VALVE PARTICULARS. We have compiled the attached table with a view to comparing the speeds and outputs we should expect from a knowledge of… | ||
| Scan092 | Comparison table of performance metrics for various engine cylinder configurations. | ||
| View original record | Side Header: B.H.P. CORRECTED TO 63¾" AND 15" DEPp Main Column Headers: 40/50, CHINA, J.I., PEREGRINE, J2, J3, KESTREL IB Sub-Column Headers: (40/50: SHORT DURATION, LONG DURATION), (J.I.: CHINA… | ||
| Scan093 | Instructions for modifying Phantom II cylinder head sections for experimental airflow work. | ||
| View original record | X1497 To RHC. from Hs/Std. Hs/Std.1/KT.14.7.33. Please have P.II. Cyl. Head sections made to the following instructions. These head sections are required for experimental work in connection with air… | ||
| Scan094 | Requesting a wooden model of an improved inlet valve port for a Bentley engine to be made for testing on a blower rig. | ||
| View original record | To RHC. from Hs/Rm. Hs/Rm.10/KT.17.7.33. X1097 IMPROVED FLOW THROUGH BENTLEY VALVES. We hand you herewith Lec.3571. This shows an improved inlet valve port designed by E. with a view to increasing the… | ||
| Scan095 | Requesting the replacement of old valves with the latest type on a Phantom II cylinder head. | ||
| View original record | X1497. To RHC. from Hs/Std. Hs/Std.11/KT. 20.7.33. We send you herewith Phantom II head E. 82758. This is at present fitted with E. 82458 Inlet Valves and old type exhaust valves E. 83095. Please… | ||
| Scan096 | Unsuccessful larger inlet valves for an 8 Litre Phantom due to being too heavy, requesting modification. | ||
| View original record | 8149/. To RHC. from Hs/Rn. Hs/Rn. 7/KT. 21.7.33. LARGER INLET VALVES - 8 LITRE PHANTOM. These valves have proved unsuccessful because they are too heavy. At our request the design people have… | ||
| Scan097 | Requesting an 8 litre and a 4 litre Bentley cylinder head for testing the orifice coefficient of valve ports. | ||
| View original record | To Hy. from Hs/Rn. X149 Hs/Rm. 2/KT. 22.7.33. ORIFICE COEFFICIENT OF VALVE PORTS. Confirming our conversation on this subject. We are anxious to obtain an 8 litre Bentley cylinder head complete with… | ||
| Scan098 | Request for valve springs and cotters to complete tests on a borrowed Bentley 8 Litre cylinder block. | ||
| View original record | To Hy. from Hs/Rm. X149f. Hs/Rm.2/KT.27.7.33. BENTLEY 8 LITRE CYL. BLOCK BORROWED FOR TEST. We find that we shall require the complete set of 12 inlet valve springs, and cotters to complete this job.… | ||
| Scan099 | Tests comparing the efficiency of valving on Phantom II and Bentley engines. | ||
| View original record | To Sg. from Hs/Std. c. Wor. C. c. E. By. c. Rg. Da. c. PN. Bn. c. Lr. REPORT OF TESTS ON EFFICIENCY OF VALVING OF PHANTOM II AND BENTLEY ENGINES. General Purpose of Tests. This series of tests was… | ||
| Scan100 | Tests for compression pressure, volumetric efficiency, and air flow across various cylinder head and valve configurations. | ||
| View original record | -2- Hs/Std.11/MA. 24.8.33. (1) Compression pressure and volumetric efficiency determination. The compression pressure on each of two cylinders was measured at various engine speeds on engine itself by… | ||
| Scan101 | Summary of various air flow and pressure difference tests for different engine cylinder heads and valves. | ||
| View original record | -3- He/Std.11/MA.24.8.33. (5) Air flow/valve lift curve (pressure difference across) valve constant for large valve cylinder head (E.83906):- This curve was taken, keeping pressure difference across… | ||
| Scan102 | List of air flow and pressure difference tests on various valve and cylinder head configurations. | ||
| View original record | -4- Hs/Std.11/MA.24.8.33 (3) Air Flow/press difference across valve curve for standard EB.222 head with guide vane fitted in port :- Owing to Phantom shrouded valve results, a guide vane was fitted in… | ||
| Scan103 | Deductions from tests on the Phantom engine, focusing on valve lift, efficiency, and size. | ||
| View original record | -5- Hs/Std.11/MA.24. 8.33. Deduction from Tests :- Phantom:- Valve Lift:- As already mentioned, the first comparisons of heads at various valve lifts Curves 1, 2, & 3. indicated that the amount of… | ||
| Scan104 | Analysis of engine port shape and design, comparing 8-litre Phantom and Bentley cylinder heads. | ||
| View original record | -6- Effect of Port shape and design etc. Comparison of 8 litre Phantom heads and 8 litre Bentley head curves on curve 6 indicate very definitely that, although the ratio of the Phantom valve area to… | ||
| Scan105 | Airflow tests conducted on experimental wooden models of engine heads with different port and valve designs. | ||
| View original record | -7- Hs/Std.11/MA. 24. 8. 33. Port & Valve shape design etc. Two special wooden models of experimental heads were tried (Hs.1045 & LeC.3571) - curves are shown on Curve 10, compared with standard head.… | ||
| Scan106 | Analysis comparing engine performance based on port design, air flow, and valve size for Phantom and Bentley heads. | ||
| View original record | -8- As can be seen from curve 7, a variation is obtained between different ports of the same head - this can be due to differences in casting of these ports, or may be due to experimental error - as… | ||
| Scan107 | Potential engine performance improvements for Rolls-Bentley and Phantom models by modifying head design and camshafts. | ||
| View original record | -9- Hs/Std.11/MA. 24.8.33. (4) The inlet valve size of the standard Rolls-Bentley head can be usefully increased to give a definite increase in power. (5) The present design of both Phantom and R.R.… | ||
| Scan108 | Diagrams illustrating the method of shrouding a valve for air flow tests and modifications to an inlet valve. | ||
| View original record | METHOD OF SHROUDING VALVE FOR AIR FLOW TESTS DIAG 1 0.5" SHROUD MADE OF SHEET METAL (.030" THICK) SOLDERED ON TO VALVE & EXTENDING HALF-WAY AROUND CIRCUMFERENCE DIAG 3 E 83904 INLET VALVE REGRINDING… | ||
| Scan109 | Diagrammatic arrangement of a rig used in cylinder head air flow tests. | ||
| View original record | H.S. 1109 DIAG. [2] THERMOMETERS SPECIALLY CALIBRATED NOZZLE VALVE LIFT ADJUST: ADJUSTABLE THROTTLE CYL. HEAD. MANOMETERS BLOWER. DIAGRAMMATIC ARRANGEMENT OF RIG USED IN CYL. HEAD AIR FLOW TESTS. | ||
| Scan110 | Blueprint diagram showing a cross-section of a modified inlet valve. | ||
| View original record | DIAGRAM 14 MODIFIED INLET VALVE. SECTION B.B. | ||
| Scan111 | Diagram of a modified shape for inlet bends in a cylinder head, with valve dimensions and areas. | ||
| View original record | MODIFIED SHAPE OF INLET BENDS IN CYLINDER HEAD. TRANSPORT. Lec. 3571 DIAGRAM 5. INLET VALVE IS 1.400 DIA - AREA = 1.540 SQ INS. VALVE STEM IS .3437 DIA - AREA = .092 SQ INS AREA OF VALVE OPENING =… | ||
| Scan112 | Blueprint graph comparing the airflow of a standard head versus a large inlet valve head for the Phantom engine. | ||
| View original record | PHANTOM. CURVE 1. FLOW THRU PORT CU.FT./MIN COMPARISON OF STANDARD HEAD - E.83538 & LARGE INLET VALVE HEAD - E.83906 AT 1/3 VALVE LIFT - i.e. .160" LIFT PRESS. DIFFERENCE ACROSS VALVE - "Hg" (1) ——… | ||
| Scan113 | Cover sheet with an ink stamp from the Int Room in Derby. | ||
| View original record | ROLLS-ROYCE, LTD. INT ROOM 29 AUG 1933 DERBY. | ||
| Scan114 | Graph comparing the flow through a standard head and a large inlet valve head on a Phantom engine. | ||
| View original record | PHANTOM CURVE 2 COMPARISON OF STANDARD HEAD - E.83538 & LARGE INLET VALVE HEAD - E.83906 AT MEAN LIFT - i.e. .354" LIFT FLOW THRO' PORT CU.FT./MIN. PRESS: DIFFERENCE ACROSS VALVE - "Hg (1) STD HEAD -… | ||
| Scan115 | Graph comparing the flow rate versus pressure difference for a standard head and a large inlet valve head on a Phantom engine. | ||
| View original record | CURVE 3 PHANTOM COMPARISON OF STANDARD HEAD - E.83538 & LARGE INLET VALVE HEAD - E.83906 AT FULL VALVE LIFT - i.e. .480" LIFT. FLOW THRO' PORT CU.FT./MIN. (1) - STD. HEAD E.83538 (2) - LARGE VALVE… | ||
| Scan116 | Graph comparing the effectiveness of opposite halves of an inlet valve in a large valve cylinder head at full lift. | ||
| View original record | CURVE 4 FLOW THRO' PORT CU.FT./MIN. PHANTOM FULL LIFT COMPARISON OF EFFECTIVENESS OF OPPOSITE HALVES OF INLET VALVE IN LARGE VALVE (E.83906) CYL. HEAD. (1) HALF OF VALVE NEARER TO COMBUSTION CHAMBER… | ||
| Scan117 | Curve showing the variation of air flow with varying valve lift for a large valve (E.83906) cylinder head on a Phantom engine. | ||
| View original record | PHANTOM FLOW THRO PORT CU.FT/MIN CURVE SHOWING VARIATION OF AIR FLOW WITH VARYING VALVE LIFT FOR LARGE VALVE (E.83906) CYL HEAD CURVE. 5. VALVE LIFT. - INS. | ||
| Scan118 | Graph comparing airflow through various Phantom II cylinder heads and an 8 Litre Bentley head. | ||
| View original record | PHANTOM CURVE 6 FLOW THRU PORT CU.FT./MIN COMPARISON OF VARIOUS PHANTOM II HEADS & 8 LITRE BENTLEY HEAD (1) ----- 8 LITRE BENTLEY HEAD (4 VALVES / CYL.) (2) ----- PH. II HEAD - E.8390G INLET VALVE… | ||
| Scan119 | Graph comparing flow through inlet ports no. 1 & 6 for a Standard Bentley Head. | ||
| View original record | STANDARD BENTLEY HEAD - EB 222 COMPARISON OF INLET PORTS NOS. 1 & 6. CURVE 7 FLOW THRO' PORT CU. FT./MIN. PRESS: DIFFERENCE ACROSS VALVE - '' Hg. (1) PORT NO. 1 (2) PORT NO. 6 (3) MEAN LINE - USED FOR… | ||
| Scan120 | Graph comparing airflow through a Standard Bentley Head inlet port with and without a guide vane. | ||
| View original record | STANDARD BENTLEY HEAD - E.B. 222 COMPARISON OF FLOW THRO' INLET PORT WITH & WITHOUT GUIDE VANE FLOW THRO' PORT CU/FT. MIN PRESS. DIFFERENCE ACROSS VALVE - "Hg CURVE R. -(1) STD: HEAD WITHOUT VANE -(2)… | ||
| Scan121 | Graph comparing flow through a standard Bentley head EB 222 versus a 30° inlet valve seat head. | ||
| View original record | CURVE 9 COMPARISON OF STD. BENTLEY HEAD EB 222 WITH 30° INLET VALVE SEAT HEAD FLOW THRU' PORT CU FT/MIN PRESS. DIFFERENCE ACROSS VALVE - "Hg (1) STD. HEAD. EB 222 (2) 30° SEAT HEAD 150 140 130 120 110… | ||
| Scan122 | Graph comparing air flow through four different types of experimental Bentley cylinder heads. | ||
| View original record | CURVE 10 FLOW THRO PORT CU.FT/MIN COMPARISON OF TYPES OF EXPERIMENTAL BENTLEY HEADS. (1) - STANDARD BENTLEY HEAD EB.222 (2) LARGE INLET VALVE HEAD EB.615 (3) VENTURI VALVE HEAD HS (4) ECCENTRIC… | ||
| Scan123 | Graph comparing flow through E.83904 inlet valves, with and without regrinding lips, in an E.83906 head. | ||
| View original record | PHANTOM CURVE II FLOW THRU PORT CU.FT/MIN. COMPARISON OF E.83904 INLET VALVES (IN E.83906 HEAD) WITH AND WITHOUT REGRINDING LIPS (1) ----- VALVE WITH REGRINDING LIP (2) ----- VALVE WITHOUT REGRINDING… | ||
| Scan124 | Graph of power curves comparing different inlet valve sizes for the Phantom engine. | ||
| View original record | B.H.P PHANTOM - POWER CURVES CURVE 12 COMPARISON OF DIFFERENT SIZES OF VALVE (INLET) (2) (3) (4) VALVES BOUNCE (2) - LARGE VALVE HEAD - E 83906 INLET VALVE DIA - 2.0" (3) - STD. HEAD E 83538 INLET… | ||
| Scan125 | Power curve graph comparing the performance of a standard head (EB 222) versus a head with large inlet valves (EB GIS) on a Bentley engine. | ||
| View original record | B.H.P BENTLEY - POWER CURVES. CURVE 13. COMPARISON OF HEADS EB 222 (STD) & EB GIS (LARGE INLET VALVES) STD HEAD - EB 222 LARGE VALVE HEAD - EB GIS TWO 1 5/8 S V CARBS. R.P.M. | ||
| Scan126 | Performance curve chart comparing a standard and a long duration camshaft for a Phantom engine. | ||
| View original record | B.H.P. PHANTOM COMPARISON OF CAMSHAFTS E 82448 (STANDARD) & Hs 962 (LONG DURATION) TIMING FOR EACH:- I.O 2° B.T.D.C. TWO 1 7/8" S.U. CARBS. CURVE (14) E 82448 CAMSHAFT STANDARD SHORT DURATION INLET… | ||
| Scan127 | The reverse side of a document showing a purple ink stamp from the print room. | ||
| View original record | ROLLS-ROYCE, LTD. PRINT ROOM 29 AUG 1933 DERBY. | ||
| Scan128 | The receipt of Beryllium Bronze and the recommended heat treatment for manufacturing valve guides. | ||
| View original record | RHC. c.Hs. X1497 BY/EM6/J.8.9.33. Beryllium Bronze for Valve Guides. -------------------------------- We have now received as pointed out yesterday, 6 ft. of the above material for the manufacture of… | ||
| Scan129 | Addendum to a report on tests concerning the efficiency of valving for Phantom and Bentley engines. | ||
| View original record | X1497. To Wor. from Hs/Std. c. C. E. c. By. Rg. c. Da. PN. c. Bn. Lr. Hs/Std.6/KT.25.9.33. X7060 X5060 X254 ADDITION TO REPORT OF TESTS ON EFFICIENCY OF VALVING OF PHANTOM & BENTLEY ENGINES. Since… | ||
| Scan130 | Conclusions from tests on engine cylinder head components, including induction ports, combustion chambers and valves. | ||
| View original record | -2- (c) To investigate point (4) - air flow/press. diff. curves were taken for two inlet ports of a non-turbulent Phantom I head - see sheet 2, - average of the two ports taken. A standard inlet valve… | ||
| Scan131 | Summary of tests to improve volumetric efficiency by fitting two inlet valves per cylinder and shortening the induction port. | ||
| View original record | -3- valves/cylinder" head with a "single inlet valve/cylinder" head with other conditions equal, but these tests indicate that the superiority of the 8 litre Bentley head must be due to the short port… | ||
| Scan132 | Two diagrams showing a sectional elevation and a horizontal cut of a rotating port mechanism. | ||
| View original record | DIAGRAM 1. A. B. C. D. SECTIONAL ELEVATION DIAGRAM 2. INLET PORT. HEAD CUT ALONG THIS HORIZONTAL PLANE PLUG FITTED TO SEATING TO ACT AS LOCATING PIVOT WHEN ROTATING PORT | ||
| Scan133 | Stamped cover or separator sheet from the print room. | ||
| View original record | ROLLS-ROYCE PRINT ROOM 26 SEP 1938 DERBY | ||
| Scan134 | Graph showing the effect of the inlet port angle on the flow through a valve port. | ||
| View original record | SHEET 1 EFFECT OF ANGLE OF INLET PORT (IN PLAN) ON FLOW THRO' VALVE PORT TAKEN AT FULL LIFT = .480" FLOW CU.FT/MIN NORMAL POSITION OF PORT PORT ARRANGED SO THAT CENTRIFUGAL EFFECT DIRECTS AIR TO… | ||
| Scan135 | Graph comparing airflow versus pressure differential for different engine cylinder heads. | ||
| View original record | SHEET 2 COMPARISON OF DIFFERENT HEADS FLOW CU.FT./MIN PRESS. DIFF. ACROSS VALVE - INS. Hg. 8 LITRE BENTLEY HEAD. ALL TAKEN AT FULL LIFT PHANTOM + .480 BENTLEY + .585 P.II LARGE VALVE - E 83206 VALVE… | ||
| Scan136 | Graph comparing airflow through different engine cylinder heads against pressure difference across the valve. | ||
| View original record | SHEET 3 FLOW CU.FT./MIN COMPARISON OF HEADS 8 LITRE BENTLEY HEAD ALL TAKEN AT FULL LIFT PHANTOM - .480" BENTLEY - .335" STD E82458 VALVE FITTED TO P.I. REQD. E.83808 (LARGE VALVE HEAD) P.I. STD. HEAD… | ||
| Scan137 | Table of pressure readings recorded at various places in an induction port. | ||
| View original record | SHEET 4 PRESSURES RECORDED AT VARIOUS PLACES IN INDUCTION PORT LETTERS A, B, C, D REFER TO DIAGRAM 1. TABLE DATA: COLUMN 1 HEADER: PRESS AT A "H2O ROW 1: 25·8 ROW 2: 23·1 ROW 3: 20·0 COLUMN 2 HEADER:… | ||
| Scan138 | Reverse side of a document with a Print Room stamp. | ||
| View original record | ROLLS-ROYCE, LTD PRINT ROOM 26 SEP 1933 DERBY. | ||
| Scan139 | Drawing LeC.3680, an improved experimental exhaust valve to be made in Austenetic steel. | ||
| View original record | X1497 To Hs. from E/JNR. c. By RHG E/JNR.1/HP.28.10.33. We send you herewith: LeC.3680 shewing an improved experimental exhaust valve to be made in Austenetic steel. Handed to you on Sat. E/JNR. | ||
| Scan140 | Addition to a report on tests for the efficiency of valving of Phantom II & Bentley engines, comparing wooden models to machined castings. | ||
| View original record | FILES. V1497. 6.12.33. X219 X21-1 FURTHER ADDITION TO REPORT ON TESTS ON EFFICIENCY OF VALVING OF P.II & BENTLEY ENGINES. (Hs/Std.11/MA.24.8.33). Since making the above report attempts have been made… | ||
| Scan141 | Summary of conclusions from tests on engine port streamlining and inlet valve modifications on a Bentley engine. | ||
| View original record | -2- CONCLUSIONS FROM TESTS. (1) Improvement of streamlining of port etc. as tried gives a very slight increase in flow - this would probably not be detected on an engine (see attached curve). (2)… | ||
| Scan142 | Graph comparing the air-flow of various Bentley cylinder heads. | ||
| View original record | COMPARISON OF VARIOUS BENTLEY CYLINDER HEADS BY AIR-FLOW TESTS. FLOW. CU.FT/MIN. PRESS. DIFF. ACROSS VALVE - INS. HG ER.1237 ALUM. HEAD STREAMLINED PORT INLET TURBULENCE REMOVED. STD. WOODEN MODEL.… | ||