Rolls-Royce Archives
| Identifier | Entry | ||
| Scan001 | From 'R.' to 'J.' discussing the bonding of radiator tanks to the matrix, referencing a previous memo from Mr. Wormald. | ||
| View original record | COPY. X 3456 COPY H.H 755 a (100 T) (S.C. 336. 15-2-16) G. Jeal. To J. from R. c to Wa. c. to Wor. c. to HS. EM/W29916. 29916. With reference to Mr. Wormald's memo, I am sorry if Mr. Wormald thinks I… | ||
| Scan002 | Suitability of different radiator designs and construction methods. | ||
| View original record | To BY. from R. To Da. To EH. c. to CJ. c. to Wor. X3456 R5/G19.12.18. X.3456 - RE RADIATORS FOR PARIS ETC. You will remember that I have written to Mr. Johnson stating that I am convinced that the… | ||
| Scan003 | Proposed construction methods for tanks, side plates, and tubes. | ||
| View original record | -2- R5/G191218. wires between each block running through to the bottom and top tanks, and to the side plates, these to be carried out in the way suggested by me, forming alterantely complete loops. We… | ||
| Scan004 | Samples, potential in-house manufacturing, and the exclusive employment of Mr. Foy. | ||
| View original record | -3- R5/G19.12.18. samples with prices, unless we propose manufacturing these ourselves. Mr. Wormald will probably decide this point. I am in favour of Mr. Foy working exclusively for us. R. | ||
| Scan005 | Dismantling a radiator in the Experimental Department to create detailed drawings. | ||
| View original record | R.R. 231 s (200 T) (S.E. 527. 21-2-18) G. 2129 X.3456 December 13. 1918. EH. from BY. c. EFC. BY12/KP131218. Referring to my memo BY11/KP131218, will you kindly note that the object of the radiator… | ||
| Scan006 | Request to arrange for a specific nickel-plated square tube radiator to be sent to the Experimental Department. | ||
| View original record | R.R. 231 a (200 T) (S.E. 527. 21-2-18) G. 2119 3456 December 13. 1918. Mr Chatwin from BY. c. Mr Shelton. c. Mr Hargreaves. c. Mr Coverley. c. Mr. c. EFC. BY11/KP131218. RE RADIATORS. Will you kindly… | ||
| Scan007 | Notes from a visit with Mr. Royce discussing the design and improvement of radiators for future car chassis. | ||
| View original record | R.H. 255a (500 T) (S.D. 408. 26-4-17.) Bm. 2/156/13. x.3466 Extract from EHL/LG1 61218. 16th December 1918. The following notes were taken during Mr. Wormald and my visit to Mr. Royce:- X.3466.… | ||
| Scan008 | Construction of a tank from nickel silver sheets or pressings. | ||
| View original record | Contd. -2- EHL/LG16.12.13. pressed from nickel silver. One point is that the surfaces of the tank must be flat (no signs of waves). If this cannot be obtained in a pressing, we must stick to the… | ||
| Scan009 | Extract requesting a sketch for a round tube radiator for a 40/50 chassis. | ||
| View original record | X. 3456. Extract from EH1/LG17.12.18. Alterations to 500 40/50 Chassis. (4) You will send a sketch shewing suggestions for bonding a round tube radiator. Round tubes to have square ends. | ||
| Scan010 | Requesting the unsweating of a radiator top tank to examine its construction and that of its round tubes. | ||
| View original record | R.R. 285 s (900 T) (S.E. 527, 21-2-18) G. 2129 Mr Coverley. c. Mr Shelton. c. EH. c. EFC. Dec. 21. 1918. BY/JH4/P21121 RE RADIATORS. X.3456 Further to BY11/KP131218 re the above, in view of the fact… | ||
| Scan011 | Different radiator tube designs and materials for testing. | ||
| View original record | To BY. from R. c. to CJ. c. to EH. 4th January 1919. R2/G4119. RE RADIATORS. X.3456. Your memo with reference to radiators to hand. I have just suggested that tubes with round ends may be found to… | ||
| Scan012 | Continued memo clarifying the placement of wire loops on a tank or end plate for strength. | ||
| View original record | Contd. -2- R2/G4118. Your impression of the loop idea is correct. The wire, however, should go round the tank or end plate, or all the loops should be where the strength is most needed, that is, at… | ||
| Scan013 | Three radiator designs and the suspension method for the 'after-the-war' chassis. | ||
| View original record | X3456 To BY. EH. } from R. copy to CJ. 9th. Dec. 1918. R2/G91218. RE RADIATOR FOR AFTER-THE-WAR CHASSIS. Regarding the "after-the-war" chassis, I want you to be sure to satisfy yourselves that the… | ||
| Scan014 | Specifications for alterations to be made to the 40/50 HP chassis. | ||
| View original record | To Wor. from E. c. to BY. c. to DA. c. to EH. c. to EP. X3456 8th January 1919. E2/G8119. RE 40/50 H.P. CHASSIS Please find attached a specification of the alterations to be made to the 40/50 H.P.… | ||
| Scan015 | The alterations and experimental work for the 40-50 HP present type chassis. | ||
| View original record | R.R. 235a (500 T) (S.D? 408. 26-4-17.) Bm. 2/158/13. 18th Decemebr 1918. R7/G181218. Compiled by Mr. Elliott. To BY) " DA) from R. " EH) c. to CJ. c. to Wor. c. to EP. RE ALTERATIONS TO 40-50 H.P.… | ||
| Scan016 | Specification for testing three different experimental radiator designs on a bumping rig. | ||
| View original record | R.R. 238a (500 T) (S.D. 406. 26-4-17.) Bm. 2/156/13. To EY. DA & EH. from R. -2- R7/G181218. Contd. (1) RADIATORS. X3456 Three types of experimental radiators to the following specification should be… | ||
| Scan017 | Radiator design alternatives, materials, performance issues, and testing requirements. | ||
| View original record | -3- R7/G181218. Contd. Mr. Johnson's and Sales' approval of the radiator as it will appear with this tank will be required. The difficulty will probably be in connection with this matter, to obtain… | ||
| Scan018 | Alternative radiator construction methods to reduce weight while maintaining strength. | ||
| View original record | To BY. from R. c. to CJ. c. to EH. 17th January 1919. R3/G17119. RE RADIATORS. X.3456. It appears that the square tube bonded radiator as made in the past was too heavy. It is possible that a lighter… | ||
| Scan019 | Optimal radiator tube size for the 40/50 HP chassis. | ||
| View original record | To R. from E. c. to EH. c. to DA. c. to EFC. 20th January 1919. E12/G20119. X.3456 - RE RADIATORS FOR 40/50 H.P. CHASSIS We are informed by Mr. Day that the statement by the Air Board that the 10 mm.… | ||
| Scan020 | Observation comparing the carburation performance of older cars with cast iron pistons against the 49GB model. | ||
| View original record | Extract from EH7/LG4.2.191 X.3456.- Any of the old type cars which I have tried lately which have had cast iron pistons and smaller radiators have been very much better from the carburation point of… | ||
| Scan021 | Radiator and shutter design, focusing on tube size and shutter placement for cars and aircraft. | ||
| View original record | Extract from El/G30119. X.3456. X.3499. X.3719 (3) RADIATORS AND RADIATOR SHUTTERS It was stated by Mr. Olley that a radiator blind or shutter must be on the outside of the radiator for a car used in… | ||
| Scan022 | Failure and collapse of round copper radiator tubes on car 49GB. | ||
| View original record | To R. from EH. c. to CJ. c. to E. c. to By. c. to Da. V.3456 EH6/LG5.2.19. X.3456.-RE RADIATORS FOR CARS. X.2631. We find on the round tube radiator on 49GB that a large number of the tubes have… | ||
| Scan023 | Potential causes of radiator tube collapse. | ||
| View original record | To EH. from R. c. to CJ. X.3456 - RE 49 GB RADIATOR COLLAPSING This is not as serious as at first sight. The collapse of tubes is not caused by suction of the pump, and is not caused by mechanical… | ||
| Scan024 | Letter to Messrs. Greenwood & Batley Ltd. regarding the dispatch of a sample Radiator. | ||
| View original record | Mr. Clark. X.3456. Ref.-Wd/EM41/M13219. 13th. February, 1919. Messrs. Greenwood & Batley Ltd., Albion Works, LEEDS. Dear Sirs, YOUR REFERENCE EK/A3. X.3456. We beg to thank you for yours of the 12th.… | ||
| Scan025 | Letter and sample tubes from Reliance Mnfg. Co. about radiators. | ||
| View original record | R.R. 235a (500 T) (S.D. 408. 26-4-17.) Bm. 2/156/13. By. from Wd. c. to Mr. Hives. c. to OO/RW Y3456 28th February, 1919. Wd1/NJ28219. Reliance Mnfg. Co. - Radiators. Herewith I send you copy of a… | ||
| Scan026 | Letter from Reliance Manufacturing Co. regarding the construction, delivery, and quality of radiator tubes for a bumper test. | ||
| View original record | SA (500 T) (S.D. 408. 28-4-17.) Bm. 2/158/13. C O P Y. ------- RELIANCE MANUFACTURING CO. Gordon Street, Lower Broughton, Manchester. For the attention of Mr.Whitehead. Feb.27th.1919.… | ||
| Scan027 | Letter concluding that construction can be improved by using die-produced components for a better finish. | ||
| View original record | Throughout the construction of these samples it has made itself more and more obvious how the construction will be improved by means of die produced components, both in cleanness and shapeness of… | ||
| Scan028 | Arranging a meeting to discuss a re-inforced radiator. | ||
| View original record | R.S. 235 - (300 T) (S.F. 102. 25-10-18) G 2244. X3450 EH. from BY. March 4. 1919. BY6-P4319. CHASSIS - RADIATOR. Mr Foy is coming down from Manchester by car to-morrow, and will bring with him a… | ||
| Scan029 | Comparison of radiators from different manufacturers for a 40/50 HP chassis. | ||
| View original record | To R. from EH. c. to CJ. c. to E. c. to BY. c. to Da. COPY X.3456 - RADIATORS FOR 40/50 H.P. CHASSIS We have received several radiators, particulars of which we give below. We suggest testing these on… | ||
| Scan030 | Discrepancy where radiator suppliers fitted one vent pipe instead of the two specified on drawings, enforcing stricter adherence to new detailed drawings for future production. | ||
| View original record | R.R. 188 (800 H) (SD. 298. 15.9.17) M.P. 176549. X3456 EH. from BY. March 11. 1919. BY3/P11319. RADIATOR - 40/50 CHASSIS. Referring to your memo EH3/T10319, we notice that both Marstone & Greenwood &… | ||
| Scan031 | Road test detailing engine performance and fuel consumption in relation to radiator temperature. | ||
| View original record | To EH. from R. c. to CJ. c. to JCR. X.3456 13th. March, 1919. R1/G13.3.19. X.3653 RE CAR 7-CA. X.3056. X.3456. I had occasion to use the big car the other day when the temperature was about 40°F. We… | ||
| Scan032 | Radiator modifications and comparing a water jacket on the induction pipe for car 7-CA. | ||
| View original record | To EH. from R. Car 7-CA (2) RL/G13.3.19. suggest that we fit on the inside of the radiator, next to the fan, a complete piece of ply the full size of the radiator with a round hole in the centre of… | ||
| Scan033 | Particulars of a Greenwood & Batley radiator for a 40/50 chassis. | ||
| View original record | To EY. from EH. c. to L. X.3456. RE RADIATOR FOR 40/50 CHASSIS. We have now received another radiator from Greenwood & Batley made to the following other particulars. Make of Radiator. | Type of tube.… | ||
| Scan034 | Design improvements for radiator blocking plates on the 40/50 chassis. | ||
| View original record | To R. from EH. c. to CJ. c. to E. c. to BY. c. to Da. EHL/LG4.4.19. 4th April 1919. X.3653 X.3456 - RE RADIATORS FOR 40/50 CHASSIS It has been agreed all-round that provision should be made for… | ||
| Scan035 | Page discussing the operational simplicity of having the whole radiator in use. | ||
| View original record | Contd. -2- EH1/LG4.4.19. so that we must make it an easy and simple operation to have the whole of the radiator in use. EH. | ||
| Scan036 | Design and placement of louvres for future radiators. | ||
| View original record | R.R. 235a (500 T) (S.D. 40c. 28-4-17.) Bm. 2/156/13. To EH. from R. c. to CJ. c. to BY. c. to Da. c. to EFC. X.3499 R2/G9.4.19. X.3456 - RE LOUVRES FOR FUTURE RADIATORS We have concluded that the best… | ||
| Scan037 | Design specifications for a radiator louvre frame to control airflow, including materials and operation. | ||
| View original record | Extract from E6/G1.5 19. X.3456. X.3499. (1) RADIATORS - It is not apparently possible to make any immediate alterations to the radiators which will facilitate the fitting of a means of cutting off… | ||
| Scan038 | Thermostat placement and the requirement for a thermometer on production cars. | ||
| View original record | Contd. -2- E6/G1.5.19. When fitted in a convenient position for operating the louvres might require its water connections to be made in a manner which would short-circuit the radiator; this would be… | ||
| Scan039 | Requesting an update on the status of 40/50 HP radiators for experimental work and testing. | ||
| View original record | To RY. from E. Copy to Cl. " " " ~~BN.~~ " " " ~~EWC.~~ X.3456 RE 40/50 H.P. RADIATORS. As the radiator situation has undergone a number of changes since the specification R7/C18/12/18 was issued, it… | ||
| Scan040 | Technical update regarding chassis components including batteries, wiring, thermometers, and coils. | ||
| View original record | -3- X.3456. Bnl/P14.5.19. It is anticipated that after 250 chassis we shall in cooperation with Messrs. Lucas, have improved the Lucas battery to suit our requirements, and that this battery will then… | ||
| Scan041 | Methods for radiator temperature control, including screening and a water bye-pass system. | ||
| View original record | R.H. 285A (500 T) (S.D. 408. 28-4-17.) Bm. 2/158/13. To EH. from R. c: to CJ. c: to BN. X.3563 X.3456.✓ R7/G28.5.19. RE RADIATORS Regarding the screening of the radiator, I have suggest- ed that you… | ||
| Scan042 | Report and a copy of a note regarding 40/50 HP Chassis Radiators. | ||
| View original record | To BY. from BN. c. to EH. Copy Bn8/LG29.5.19. 29th. May 1919. RE 40/50 HP. CHASSIS RADIATORS. X.34-56 With reference to Mr. Elliott's note E2/G10.5.19., have you yet reported on this matter. Will you… | ||
| Scan043 | Material and design of a radiator blanking-off piece for the 40/50 chassis. | ||
| View original record | COPY. To R. from EH. C. to CJ. C. to Bn. C. to E. C. to Da. X.2631 X.3456 X.3653 RE BLANKING OFF PIECE FOR 40/50 CHASSIS RADIATORS. We find that 49-GB. Car maintains an average temperature of 75°C.… | ||
| Scan044 | Design of bonnets and the effectiveness of radiator shutters for the 40/50 chassis. | ||
| View original record | C.O.P.Y. To R. from EH. c. to W. c. to Hn. c. to E. c. to De. X.3456 ✓ X.3499 X.3421.- RE BONNETS FOR 40/50 CHASSIS. The improvement in the cooling of the water with the four shutters open and four… | ||
| Scan045 | Recommendation to alter the position of bonnet stud handles for improved ease of use. | ||
| View original record | Contd. -2- EH1/LA.5.6.19. ------- your suggestion of bringing the stud handles closer together, and we find that it is a distinct improvement both as regards the effort required to lift the bonnet and… | ||
| Scan046 | Results of testing a radiator bye-pass system on a 40/50 chassis. | ||
| View original record | To R. from EH. c. to CJ. c. to BN. c. to E. c. to Da. EH2/LG10.6.19. BYE-PASS FOR 40/50 CHASSIS. X.3563 X.3565. X3650 X.3456. We have fitted a pipe to form a bye-pass in the pipe leading to the… | ||
| Scan047 | Radiator valve design to prevent freezing and maintain engine temperature. | ||
| View original record | Contd. -2- EH2/LG10.6.19. It could be arranged so that the valve could never completely shutt off the hot water from going to the radiator so as to avoid freezing. It appears as though it would be… | ||
| Scan048 | Ordering of radiators due to material shortages and deciding future policy on larger tube radiators. | ||
| View original record | R H 238 s (200 T) (S.P. 103, 25-10-18) G/ 2244 BN from BY. EH. C. WD. X3456 BY7/P24.6.19. CHASSIS - RADIATORS. ------------------- Mr Whitehead informs me that owing to information he has received… | ||
| Scan049 | List of parts and their corresponding numbers for the assembly of chassis 1.E.K. | ||
| View original record | Y.3456 Extract from RHC1/LG30.6.19. RE CHASSIS 1.E.K. The above chassis is now complete and it has been assembled as follows:- "E" SECTION. to S.S. No. REMARKS. X.3474. Wire Fittings. E.17146 X.3438.… | ||
| Scan050 | Difficulties in maintaining engine water temperature in traffic and proposing a radiator bye-pass system. | ||
| View original record | To R. from EH. c. to CJ. c. to Bn. c. to E. c. to Da. EH3/LG22.7.19. X.2631. X.3456. X.3563. X.3499 RE MEANS OF CONTROLLING WATER TEMPERATURE. We noticed when driving 49-GB in London that when running… | ||
| Scan051 | Test report on chassis 1EX detailing radiator performance, including water boiling on hills and a subsequent aluminium piston seizure. | ||
| View original record | Chassis 1EX X.3456 X.3683 -5- Bn5/W28.7.19. contd. Radiators. There is as much power as one could possibly want under any condition. The acceleration is very good indeed, and I am sure the car is very… | ||
| Scan052 | Engine performance, detailing issues with boiling, vibration, misfiring, and fuel consumption during a test run. | ||
| View original record | -6- En5/W38.7.19. contd, with the water boiling. With so much boiling the top of the radiator got very dirty with the rusty water, as the cap did not appear to be very tight. Also the front springs… | ||
| Scan053 | The failure of a Marston Radiator during bumping tests. | ||
| View original record | R.R. 235a (500 T) (S.D. 408. 26-4-17.) Bm. 2/156/13. To E.V. From E.H. C.c. to R. EHS/LG11.8.19. 11th. Aug. 1919. RE MARSTON RADIATORS. X.3456- X.46 We have been bumping the standard Marston Radiator… | ||
| Scan054 | Chasing a report on radiator tube sizes and confirming existing and future orders. | ||
| View original record | R.R. 236 a 200 T) (S F. 673. 22-5-19) 45. 2576. X3456 BY/JH4/H. 13. 8. 19. Mr. Hives. c. Bn. RE RADIATORS We are still awaiting your report re comparitive results between radiators having 7 mm. and 8… | ||
| Scan055 | Instructions regarding a faulty radiator returned to the Marston Radiator Company and a request for further testing. | ||
| View original record | Hs Ck. from BY. X, 3456 BY11/P14.8.19. RADIATORS. X.46. X.3456. We have instructed that the faulty radiator shall be returned to the Marston Radiator Company, who will take out the faulty tubes and… | ||
| Scan056 | Radiator tube sizes for the 40/50 chassis and authorising an order for 250 units. | ||
| View original record | To By. from BN. copy c. to Hs. Bn3/W22.8.19. RE RADIATOR FOR 40/50 CHASSIS. X.3456 With reference to EY/JH4/H13819, efficiency tests of the 7 mm. and 8 mm. tubes have not yet been carried out. Our… | ||
| Scan057 | New round tube honey-comb radiator for the 40/50 chassis. | ||
| View original record | X.3456. Extract from EH1/LG27.8119. The following is a list of new parts which have been fitted to the 40/50 chassis, we are now making compared with 40/50 HP. chassis we made previous to the War. NEW… | ||
| Scan058 | Seeking guidance on whether to widen the sourcing of radiators beyond the Marston Company to include Orme Evans. | ||
| View original record | H.H. 336 & (200 T) N.P. 6/4. 23-5-19. (C) 2374 HS. from BY. BN. Copy BY9/P9.9.19. RADIATORS. X.3456 Up to the present, acting upon your recommendations we have only placed orders for radiators with… | ||
| Scan059 | The merits of flat aluminium strips versus circular baffles for radiators. | ||
| View original record | To BN. from EH. c. to BY EH9/LG9.9.19. 9th. Sept. 1919. X.3653 RE BAFFLES FOR RADIATORS. X.3456 I feel sure that Mr. Royce is under the impression that we are despatching Cars with a portion of the… | ||
| Scan060 | Design and issues with radiator blanking-off plates for managing engine temperature. | ||
| View original record | To En. From EH. EH3/LG18.9.19. 18th. Sept1919. RE BLANKING-OFF PLATES FOR RADIATOR. X.3456 We did not get much satisfaction from "R" the other day with reference to this. What we say is that we cannot… | ||
| Scan061 | Quality of Orme Evans radiators for the 40/50 chassis and the decision to place orders. | ||
| View original record | R.R. 235 a (200 T) (S.F. 674 22-5-19) G. 2376 X.3456. To BY. from EH. c. to Bn. EH5/LG19.9.19. RE RADIATOR FOR 40/50 CHASSIS. X.3456. X.1754. With reference to your memo BY/9/P9.9.19., we consider… | ||
| Scan062 | List of new and experimental parts fitted to the FE Bumper Chassis X.1131. | ||
| View original record | X. 3456 To EH. from RHC. c. to EFC. RHC2/LG2.10.19. 133/ FE BUMPER CHASSIS. X.1131. The following new and experimental parts have been fitted to the above chassis. New axle fitted with taper type… | ||
| Scan063 | Failures of the 40/50 radiator suspension's ball end cantilever during bumping tests, with recommended design and process changes. | ||
| View original record | H.R. 235a (500 T) (S.D. 403. 26-4-17.) Bm. 2/156/13. X.3456. To R. from EH. EHL/LG10.10.19. c. to CJ. c. to BN. c. to Da. c. to BY. BUMPING TEST FOR 40/50 RADIATOR SUSPENSION. X.3456. X.1331. Recently… | ||
| Scan064 | Investigation into potential corrosion on radiators stored without water. | ||
| View original record | R.R. 235a (500 T) (S.D. 408. 28-4-17.) Bm. 2/156/13. EH Wd: from EY. c. Mr Insull. c. FH. c. Bn. X3456 CHASSIS - RADIATORS. RE ASSUMED PROBABLE CORROSION IN RADIATORS WHICH HAD STOOD WITHOUT WATER… | ||
| Scan065 | Concluding page of a document advising against using certain components due to the likelihood of future trouble. | ||
| View original record | too bad to be used, as they would be likely to develop trouble later. EY. | ||
| Scan066 | Advising on radiator management for optimal engine performance during autumn. | ||
| View original record | X. 3456. To RJ. from R. R5/G20.10.19. Copy to CJ. " " BN. " " PN. " " HN. " " EP. X. 3456. " " EH. X. 3653. " " HM. Dear BJ., RE RADIATORS. It is a very opportune time of the year to warn users of… | ||
| Scan067 | Decisions on parts held up for Series L & M chassis, specifically the dynamo, wiring, and radiator. | ||
| View original record | X.3456. En. from BY. c. to Ck. c. to EH. c. to Wd. BYB/P21.10.19. X.2565 - RE PARTS STILL HELD UP FOR SERIES L. & M. In view of the fact that the censorship for modification to design is coming on… | ||
| Scan068 | Mr. Royce's suggestion to modify the 40/50 HP radiator suspension. | ||
| View original record | To EH. from E. Copy to CJ. " " BN. " " BY. " " DA. " " EFC. RE 40/50 H.P. RADIATOR SUSPENSION X.3456. Referring to your report EHL/LG10.10.19, would you [handwritten: you] kindly note that Mr. Royce… | ||
| Scan069 | Proposing a test to compare the cooling efficiency of Berlin black versus dead black finishes on radiators. | ||
| View original record | R.R. 235a (500 T) (S.D. 408. 26-4-17.) Bm. 2/150/13. X 3456 Copy from BY. c. EH. BY2/P7.11.19. CHASSIS - RADIATORS. ------------------- With reference to the blacking of the matrix of the radiator, in… | ||
| Scan070 | Extract from a letter regarding the process of blacking the radiator matrix, detailing experiments and the importance of cleaning before enamelling. | ||
| View original record | BY. c. to EH. c. to Sft. COPY. EP/T15/F13.11.19. RE BLACKING OF RADIATOR MATRIX. S456. Further to the above, we give below extract of a letter received from the Radiator Makers in regard to the… | ||
| Scan071 | Tests on the efficiency of blackening radiators, noting no change in efficiency but poor application quality. | ||
| View original record | To BY. from EH c. to BN. EH3/LG14.11.19. RE BLACKING OF RADIATORS. 8456 We have taken tests and find that there is no difference in efficiency with the radiator which has been blacked at the… | ||
| Scan072 | Instruction sheet detailing radiator tests with temperature readings from hill climb and road tests. | ||
| View original record | V3456 R.R. 26 10M Bks.) (SE 581 13-5-18). M.P. 189358 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To Mr Hives L17/7/19 1919 Order No. Radiator Tests Customer's No. Tests carried out at 30 mph & Instruments… | ||
| Scan073 | Radiator test report recording water and air temperatures during hill climbs and a three-mile stretch. | ||
| View original record | R.R. 26 10M Bks.) (SE 591 13-3-18). M.P. 189358 ROLLS-ROYCE LIMITED. INSTRUCTIONS. X3456 To Mr Hives 15/11 1919 Order No. Customer's No. Radiator Test Baden Block Jacksvill Hill Water Air 61°C 34… | ||
| Scan074 | Bumping tests and alterations for the 40/50 HP radiator suspension. | ||
| View original record | To BN. from R. Copy to CJ. " " BY. " " EH. R19/G14.11.19. X.3456. RE BUMPING TESTS FOR 40/50 H.P. RADIATOR SUSPENSION. With reference to the above, will Mr. Bailey make the alteration to the… | ||
| Scan075 | Proposal to increase the slack for the spheres carrying the chassis radiator and its bottom tank. | ||
| View original record | R.R. 235 b (200 T) (S.F. 673, 22-5-19) G. 2376 X3456 BY10/H. 17. 11. 19. Mr. Shelton. c. Hs. CHASSIS RADIATOR. SECTION 5250. Mr. Royce is proposing that we should increase the slack between the… | ||
| Scan076 | Requesting a report on two blackened radiators sent to the Experimental Department. | ||
| View original record | To Mr. Hives from Sft. c. to BY COPY Sftl/W17.11.19. RE BLACKING OF RADIATOR MATRIX. X.3486 Two radiators were blacked by us and sent into the Expl: Dept: on the 12th. I shall be glad if you will let… | ||
| Scan077 | The reaming procedure for the 40/50 Chassis radiator bottom tanks and caps before despatching to makers. | ||
| View original record | X3456 c. to Ms. c. to Mr Scott. c. to Mr Insull. ---------- BY/Shn3/ML.26.11.19. RE 40/50 CHASSIS - RADIATOR. SECTION 5250. It has been brought to our notice that the suspension spherical seatings… | ||
| Scan078 | The release for manufacture of L, M, and N series, focusing on a delay to alter the radiator design. | ||
| View original record | X 3456 To By. from Bn. c. to Da. c. to Hs. & CK. Bn1/W26.11.19. X. 3456. X. 3726. RE RELEASE FOR MANUFACTURE OF L, M, and N. series. Will you please confirm the results of yesterday's Conference on… | ||
| Scan079 | Extract detailing a bumping test on an Orme Evans radiator for a 40/50 chassis. | ||
| View original record | X.3456. Extract from EH2/LG27.11.19. X.1331.-BUMPING TEST ON 40/50 CHASSIS. Orme Evans Radiator X.1754. X.3456. This radiator is similar to the Marston. The object of trying the Orme Evans Radiator… | ||
| Scan080 | Trial of two new black enamels, 'Apex' and 'Optical', on cylinder blocks and suggesting their use on radiators. | ||
| View original record | To BY. from EH. X.3456 EH1/LG2.12.19. X.3658 - RE BLACK ENAMEL X.3456. We have sent in to Mr. Roscow two quart jars of Summit black enamel. One is "Apex" cylinder black and the other is "Optical"… | ||
| Scan081 | Materials for experimental radiators, suggesting the use of pre-polished metal sheets to better detect flaws. | ||
| View original record | X3456 BY10/H. 10. 12. 19. Mr. [text strikethrough] C.c. Mr.Howie, American Office. C. Hs. ------------------------------------- CHASSIS RADIATORS. RE RADIATORS BEING MADE AT OUR WORKS.… | ||
| Scan082 | Weight specifications for Radiator E.17143, empty and full of water. | ||
| View original record | R.R. 23a & 300'D (S'Y 672. 22.5.19) G. m'f'g. X 348 16.12.19. R-R- RADIATOR E.17143. Weight empty 94 lbs. 2 ozs. Full of Water 132 lbs. 2 ozs. | ||
| Scan083 | Dispute over the cost and quality of the black finish on Marston radiators. | ||
| View original record | R H 235 a 200 T ; S F 673 22-5-19 G 2376. X.3486. COPY. To Wd. from Wor. c. to BY. c. to EP. c. to HS. c. to Ms. Wor26/M18.12.19. X.46 RE MARSTON RADIATORS. X 3486 I do not agree that we should be put… | ||
| Scan084 | Radiator test results with temperature and speed readings at various locations. | ||
| View original record | X.8456. 49-GB. CAR. 28/29/30-12-19. U (1) CK EKC X.3456 RADIATOR TESTS. X.842Y Fill Original Radiator - ½ mile readings. From Ticknall. Towards Ticknall. From Ticknall. Water temp. air. M.P.H. Water… | ||
| Scan085 | Experimental radiator temperature test readings from road tests including Ticknall and London Road. | ||
| View original record | Contd. -2- (4) Expt: Radiator. Tests as No.1. - 1/2 mile readings To Ticknall Water temp. | air. | M.P.H. 60°C | 34°F | Standing. 62 " | " | 30 63 " | " | " 65 " | " | " 63 1/2" | " | " 63 " | 34… | ||
| Scan086 | Sample pressing for a radiator top tank supplied by the Excelsior Motor Co. | ||
| View original record | X.3456 To Bn. from E. Copy to CJ. " " Da. " " Hs. " " Ck. X.3456. RE PRESSING FOR TOP TANK OR RADIATOR. Referring to your memo Bn24/W2.12.19, we thank you for sample pressing supplied by the Excelsior… | ||
| Scan087 | Use of rubber versus leather washers for a radiator blanking plate and fittings. | ||
| View original record | Hs. from EY. [crossed out] c. to EP. c. to Mr. Shelton. CK [handwritten] x.3456 [handwritten] BY15/P2. 3. 20. x.3453 [crossed out] RADIATOR - RE BLANKING PLATE AND FITTINGS. x.3456 [handwritten] In… | ||
| Scan088 | The fixing of radiator plates to prevent water boiling due to seasonal weather conditions. | ||
| View original record | X.3456 A.T. BY. C. to Rm. C. to Hs. C. to Ck. EP23/F15.3.20. X3456. RE. FIXING OF RADIATOR PLATES. According to present weather conditions it seems that the fixing of the 7" and 4" radiator plates… | ||
| Scan089 | Proposed new swivelling fixing method for a car mascot. | ||
| View original record | X.3456 R R 235 A (100 T) (S.F. 840' 6-6-18) G. 2460. COPY. To Hs. From Da. EFC Da5/UB1.4.20. Accompanying is one of the standard mascots on a proposed new type of fixing. Would you please put this on… | ||
| Scan090 | The faulty fitting of radiator brackets and the need for improved inspection. | ||
| View original record | x3456 A. AT E.Y. c. to Hs. c. to Sft. c. to Se. c. to BN. EP17/F8.4.20. RE. FAULTY FITTING OF RADIATOR BRACKETS. --------------------------------- We have been very keen on inspecting the fitting of… | ||
| Scan091 | Discrepancy between the lengths of radiator tubes ordered for repairs versus those required for standard production. | ||
| View original record | RH. [strikethrough]Copy to Wor.[/strikethrough] [strikethrough]Copy to Isy.[/strikethrough] [strikethrough]Copy to Hy.[/strikethrough] Copy to Hs. X.3456 WD1/FJG.5.20. Radiators. Referring to the… | ||
| Scan092 | Clarifying the specifications for radiator tubes, distinguishing between those for repairs and those for complete sets. | ||
| View original record | Wd. from FVC c. to Hm. c. to Hy. c. to Hs. 15 EFC X.3456 COPY. BY/C4/P10.5.20. X 3456 CHASSIS - RADIATORS. X.3424 In reply to your memo Wd1/PJ6.5.20, we are quite aware that radiator tubes have been… | ||
| Scan093 | Radiator performance test results for a 49-GB car with 10mm and 8mm tubes. | ||
| View original record | R.R. 138a (100 T) S. G. 643. (9-2-20) c 2618 X.3456 13.5.20. X.2631. 49-GB Car. X 3Y2Y X.3456. RADIATOR TESTS. 10 mm Tubes. 3 mile level stretch London Rd. 3/8" stretch Readings. (1) From Derby. To… | ||
| Scan094 | Log of radiator performance tests, recording temperatures and speeds on Ticknall Hill and London Road. | ||
| View original record | R.R. x35a (100 T) S. G. 643. 19-2-20. G 2618 Contd. -2- 13.5.20. 8 mm tubes. Ticknall Hill. UP. Water temp. atmos. temp. Foot boards. M.P.H. 72º 16º 28º 30 73º " " " 71º 15º " " DOWN. Water temp.… | ||
| Scan095 | Test report detailing radiator performance with temperature and speed readings on Ticknall Hill. | ||
| View original record | Contd. -3- 14.5.20. R-R Radiators. Ticknall Hill. UP. DOWN. Water temp. | Atmos. temp. | Foot boards. | M.P.H. | Water temp. | atmos. temp. | Foot boards. | M.P.H.… | ||
| Scan096 | Standardisation and design of capillary tube thermometers and radiator shutters for the 40/50 HP chassis. | ||
| View original record | To. R. from Bn. C. D. C. EH. C. T x.3456 Bn6/P28.5.19. X3565 X3499 RE CAPILLARY TUBE THERMOMETER AND RADIATOR SHUTTERS FOR 40/50 HP. CHASSIS. Mr. Johnson raised with me the other day, whether anything… | ||
| Scan097 | Suitability of a roll top desk blind compared to a hand-operated shutter for a chassis. | ||
| View original record | -2- and that this possibly could accomodate a similar type of blind. I believe the objection to the roll top desk blind fundamentally is that it requires more power to operate it, and is therefore… | ||
| Scan098 | Requesting a copy of a note concerning 40/50 HP Chassis Radiators. | ||
| View original record | To Ef. from Bn. c. EH. X3456 Bn8/P29.5.19. RE 40/50 HP. CHASSIS RADIATORS With reference to Mr. Elliott's note E2/G10/5/19, have you yet reported on this matter. Will you please let me have a copy of… | ||
| Scan099 | Blacking of the radiator matrix, including an extract from the radiator makers. | ||
| View original record | X3456 BY. c. to EH. c. to Sit. EP/T15/F13.11.19. RE. BLACKING OF RADIATOR MATRIX. ------------------- Further to the above, we give below extract of a letter received from the radiator makers in… | ||
| Scan100 | Inquiring about arrangements for blacking the radiator matrix before chassis despatch. | ||
| View original record | H.R. 835a (200 T) (S.P. 673. 29-5-19) G. 2376 X3456 chassis By from EP. [struck through] O. to Sft. c. to EH. EP/CEP14/H2.12.19. Re Blacking of Radiator Matrix. ---------------------------- We shall… | ||
| Scan101 | Temperature test report for Chassis 35.FW with a Limousine body. | ||
| View original record | S.F.C. X-3456. CHASSIS 35.FW. 7.6.20. file EFC JUN 8 RECEIVED. Limousine Body. Engine revs. 1000. Standard engine - without Thermostat " Blanking Plates. " Bonnet. Temperature inside Body 21½°C. "… | ||
| Scan102 | Supplier's (Greenwood & Batley Ltd.) response to reported failures in 'D' section radiator tubes. | ||
| View original record | Mem. from Wd. c.to Hr. c.to Hy. c.to Bm. c.to Rm. c.to Ss. c.to Hs. X.3406 Wd8/NJ7.6.20. Radiators. Immediately following our Conference on the 31st ult. I wrote Greenwood & Batley Ltd. regarding… | ||
| Scan103 | Tests carried out on thermostat controls and bye-pass holes to prevent radiator freezing. | ||
| View original record | X.3456. To R. From Hs. c. to CJ. c. to Bn. c. to E. c. to Da. c. to By. c. to Oy. c. to Na. Hsl/LG9.6.20. X.3563. RE THERMOSTAT CONTROL. X.3456. We have carried out tests with a car fitted with a… | ||
| Scan104 | Continued note on engine temperature and the conditions under which a radiator might freeze. | ||
| View original record | Contd. -2- Hsl/LG8.6.20. on the road, (air temp. 17°C) the temperature was 55 to 60°C, but of course, this depends entirely upon the condition under which the engine is run. The worst condition for… | ||
| Scan105 | Comparative times for engine water heat-up under no load with different thermostat and bye-pass configurations. | ||
| View original record | Engine run with car standing at 1000 R.P.M. - no load. Comparative Times taken by heat up water. Temp. Standard car - no Thermostat or blanking plates. Thermostat fitted .062" bye-pass. Thermostat… | ||
| Scan106 | Confirmation to proceed with an order for a further 125 Marsden type radiators for the 40/50 chassis. | ||
| View original record | By. from Bn. Copy to EH. Hd. X 3456 Bn11/W26.6.19. RE 40/50 CHASSIS RADIATORS. Confirming my conversation with you, and with reference to By7/P24.6.19, will you please proceed with radiators of the… | ||
| Scan107 | Parts fitted to experimental cars 4.EX and 6.EX. | ||
| View original record | X.3486. EFC. from RHC. RHC8/LG1.7.20. 4 X.3764 X.3923 The following have been fitted to 4.EX Car - X.3507 Luggage Carrier N.310. Petrol Tank with side Filler X.3889. The following has been fitted to… | ||
| Scan108 | Using copper versus brass tubing for radiators in the U.S.A. due to corrosion concerns. | ||
| View original record | To Hs. from R. Copy to CJ. " " HL. " " EFC. " " Cy. x 34 56 R12/G27.7.20. X.3678. RE RADIATORS FOR U.S.A. X.3456. They are urging us to use some copper tubing because of the effect of alkaline in the… | ||
| Scan109 | Investigation into using copper instead of brass for radiator tubes due to water quality issues. | ||
| View original record | -2- HK2/G27.7.20. Contd. large number of radiators with brass tubes which, if they are defective, should be stopped at once. Whatever is correct for U.S.A. is correct in England and other parts of the… | ||
| Scan110 | Unsuitability of brass radiator tubes in the Western US due to alkaline water, proposing tests and comparing materials. | ||
| View original record | H14 c./HS. Jo.F.C. COPY. X.3456. BY8/H28.7.20. X-3678 RADIATOR. X 3456 We have received a cable through London, from OY. in which he states that brass tubes for Radiators are not usable in the Western… | ||
| Scan111 | Request to obtain Boilerine Tablets from the Shell Co. for preventing lime deposit and corrosion in radiators. | ||
| View original record | X.3456 To Ms. from Hs. c. to EP. Hs4/LG29.7.20. X-1628. RE "BOILERINE". X.3456. The Shell Marketing Co. have sent us some printed matter on Boilerine Tablets which are added to the water in the… | ||
| Scan112 | Issues with collapsing copper radiator tubes and advocating for the continued use of brass tubes. | ||
| View original record | To R. from Hs. c. to CJ. c. to Bn. c. to E. c. to By. c. to Da. c. to Oy. X.3456 Hs2/LG29.7.20. X.3456. X.3678. RE TUBES FOR RADIATORS. The only radiator we have run with copper tubes gave trouble… | ||
| Scan113 | Recommendation to adopt Ferodo bon-rest material instead of brass wearing strips on the 40/50 chassis bonnet. | ||
| View original record | To R. from Hs. c. to CJ. c. to Bn. c. to E. c. to Da. c. to Bn. X.3456 Hs1/LG30.7.20. X.3470. RE 40/50 CHASSIS BONNET. X.3456. We recommend that we adopt Ferodo bon-rest material instead of the brass… | ||
| Scan114 | Advantages and disadvantages of fitting a thermostat control, focusing on the risk of the radiator freezing. | ||
| View original record | To BJ. from Hs. X3456 Hs3/LG3.8.20. X.3563. RE THERMOSTAT CONTROL. X.3456. With reference to the attached memo. ref. BJ3/S 2.7.20, the inherent disadvantage of a Thermostat Control operated by… | ||
| Scan115 | Questioning the reliability, cost, and implementation of a new thermostat control for water temperature. | ||
| View original record | To Hs. from BJ. BJ3/S2.7.20, X.3563. Thermostat Control for Water Temperature. With reference to Hs/AT30.6.20, are we confidnet that in fitting the Thermostat, we shall have no trouble in town or… | ||
| Scan116 | Laboratory report on corrosion tests of a brass tube in hard water and various chemical solutions. | ||
| View original record | COPY. X.3456 BY. C. Hs. E.F.F. H13/EB5.8.20 Laboratory. X.3456 X.3678 RADIATORS - BY8/H28.7.20. Up to the present after five days, during which a brass tube has been in very hard water taken from a… | ||
| Scan117 | Laboratory memo on corrosion tests for radiator tubes, comparing electrolytic copper, copper with arsenic, and brass. | ||
| View original record | H.B. / BY. S.E.P. X.3456 HL12/EB11. 8. 20. Laboratory. X 8456 RE RADIATOR TUBES. X 3678 Some corrosion tests we did two years ago indicated that electrolytic copper was more resistent to alkaline… | ||
| Scan118 | Continuation page of a document concerning trouble with water. | ||
| View original record | Contd. -2- HL12/EB11.8.20. of the water which is stated to give trouble. HCH. | ||
| Scan119 | Water loss in faulty radiators and a proposed solution. | ||
| View original record | X3456 SY. FROM EP. C. to Hs. C. to WD. C. to DA. EP24/F16.8.20. A.T RE. FAULTY RADIATORS. The present radiators lose water when the engine is running. This takes place by the water which passes from… | ||
| Scan120 | From the Experimental Department questioning the necessity of bonnet shutters for cars used in America. | ||
| View original record | X.3456 2 to Mr. Kerby India. To EWT. for R.R. Inc. From He. O.F.C. REC'd SEP 28 1920 REC'D 21.9.20. RECEIVED X-3499. RE - SHUTTERS IN BONNETS, X.3456. The Experimental Department would like to know… | ||
| Scan121 | Recommending to stop using aero engine rubber hose on car engines due to poor durability compared to standard parts. | ||
| View original record | To BY. from Hs. c. to Wd. R.F.C X3456 C RECEIVED SEP 28 1920 Hs/LG27.9.20. We believe we are using some of the aero engine rubber joints on the car engine. We find, for instance, that the rubber joint… | ||
| Scan122 | Component issues and requests for vehicles supplied to the American market. | ||
| View original record | X.3456. -4- Extract EP6/F11.11.20. Contd. X.3614 - Re American Visit. (8) BONNET FITTING. X.3421. Complaints we have made as regards the bedding of the bonnets on new chassis are certainly justified… | ||
| Scan123 | Petrol systems, spring shackle clearances, and radiator materials. | ||
| View original record | Contd. -5- EP6/F11.11.20. In view of our experience with this system, however, also the fact that there was no serious trouble taking place with our present petrol system, I do not think that any… | ||
| Scan124 | Potential use of Monel metal as a superior alternative to nickel brass for certain vehicle parts, weighing quality against cost. | ||
| View original record | X.3456 To R.R. of America Inc. from R. (For the attention of Cy.) c. to CJ. c. to Wor. c. to Hs. c. to Wd. c. to EP. c. to HL. X4300 (struck through) X3417 (struck through) X3456 RE MONEL METAL. I am… | ||
| Scan125 | The superiority of a nickel-copper alloy over a zinc-based alloy for chassis construction. | ||
| View original record | Contd. -2- R4/G23.12.20. absolutely necessary for the performance, reliability, or good wearing qualities of the chassis, I quite understand that an alloy chiefly of nickel and copper should be… | ||
| Scan126 | Internal memorandum regarding a trial sample of All's Well Anti-Freezing Compound for production tests. | ||
| View original record | X3456 To Wd. from Hs/TMW. Hs/TMW7/LG10.1.21. X.4315. RE ALL'S WELL ANTI-FREEZING COMPOUND. X, 3456. EP. has handed over to this Department your Wd6/AG.7/AG31.12.20, and corresponding from the above… | ||
| Scan127 | Letter advising against the use of thermostats in water circulation systems due to issues with alcohol-based antifreeze. | ||
| View original record | X.3456 CY1/G28.1.21. Jan. 28th. 1921. Mr. Claude Johnson, Managing Director, Rolls-Royce Ltd., London, England. Attention Messrs. Royce & Hives. Dear Sir, X.3563 RE. THERMOSTATS. X.3499 X.3614 X.3456… | ||
| Scan128 | Cold weather engine cooling issues involving thermostats, radiators, and the use of radiator shutters. | ||
| View original record | Contd. -2- Jan. 28, 1921. Mr. Claude Johnson, has Mr. Hives/had some experience with this already, and Mr. Belnap has had so much experience with it on his Cadillacs during the last six years, that he… | ||
| Scan129 | Thermostat-controlled shutters and bypass systems for car radiators. | ||
| View original record | Contd. -3- Jan. 28, 1921. Cadillac car and was the first firm to produce the thermostat controlled bypass in this country. A picture of the thermostat operation on the Lafayette was sent to Mr. Royce… | ||
| Scan130 | Proposal and ordering 12,000 tubes for experimental chassis radiators. | ||
| View original record | H.R. 222A (100 T) (S.H. 150, 11-8-20) C. 2500 X3456 C RECEIVED FEB 7 1922 BY12-p4.2.21. O.G. from BY. C. Hs C. EFC. X4331 CHASSIS - RADIATORS. ------------------- I have discussed with Hs, a proposal… | ||
| Scan131 | 'Winterfront' radiator shutters observed on cars in New York and available for purchase in the U.S.A. | ||
| View original record | X3456 To R. from Hs. c. to CJ. c. to Bn. c. to E. c. to Da. Hs1/LG4.2.21. X.4310. SHUTTERS FOR RADIATORS. X.3456. Attached herewith is a leaflet explaining the "Winterfront" Shutter which can be… | ||
| Scan132 | Use of thermostats, radiator shutters, and anti-freeze in U.S.A. cars. | ||
| View original record | X3456 Hs 3/29.1.22. To R. from Hs. c. to CJ. c. to Bm. c. to E. c. to Da. c. to Hy. c. to EWT. for R.R. Inc. MADE AT CROXLEY X.3563. X.3499. THERMOSTAT IN U.S.A. X.3456. With reference to the cable… | ||
| Scan133 | Radiator shutter controls, water temperature limits for alcohol coolant, and thermostat-operated shutters on American cars. | ||
| View original record | Contd. -2- MS3/LG14.2.21. have a Thermometer and some shutter control on the radiator. In order to avoid the loss of alcohol, the water temperature should not exceed about 70°C. The latest high-class… | ||
| Scan134 | To R.R. of America discussing the use of thermostats versus hand-operated radiator shutters on the chassis. | ||
| View original record | X.3456 To R.R. of America Inc. from R. For the attention of OY) c. to CJ. c. to BY. c. to Hs. c. to EFC. R2/G22.2.21. 3663 X.4285 - RE CHASSIS - THERMOSTATS. X.3456 X.3499 With reference to… | ||
| Scan135 | Design, issues, and alternatives for the thermostat and bypass system. | ||
| View original record | X.3456 To R.R. of America Inc. For attention of OY. } from R. To Hs. c. to CJ. c. to WOR. c. to PN. c. to EF. c. to Da. c. to BY. c. to RFC. RG/C15.2.21. X.3583 RE THERMOSTATS X.3456 X.3499 The… | ||
| Scan136 | The design and placement of radiator louvres and their control system. | ||
| View original record | Contd. -2- RG/G15.2.21. in the engine. We next came to the conclusion that the thermostat was quite capable of doing the work of operating well balanced shutters, and therefore the oil pressure relay… | ||
| Scan137 | Confirming the decision to standardise thermostat-operated shutters rather than introduce a thermostat bypass. | ||
| View original record | O.H. 2486 (100.T) (S.H. 798. 10-12-20) G. 2948 contd. -3- R6/C15.2.21. ------------ and a thermometer will be an immediate solution of the difficulty and that a thermostat byepass had better not be… | ||
| Scan138 | Modifications to the 40/50 HP model to handle a lower grade of petrol. | ||
| View original record | To Hs. from R. c. to CJ. c. to Wor. c. to PN. c. to Da. c. to BY. c. to EP. c. to HM. c. to R.R. America Inc. for attention of CY. X 3456 R5/G22.2.21. X.985 X.4305 RE IMPROVEMENTS TO MEET LOWER GRADE… | ||
| Scan139 | Continued discussion on heating the induction pipe for fuel vaporization and improving engine aesthetics. | ||
| View original record | Contd. -2- R5/G22.2.21. --------- petrol was very largely on the inside of the pipe, that after the pipe branched into two the distribution could not be easily corrected if there was any inequality… | ||
| Scan140 | Letter discussing thermostat-operated shutters, comparing American car solutions and considering a proprietary design. | ||
| View original record | X 3456 Mr. Belnap Mr. Beaver. Mr. Nadin. Mr. Bagnall. Mr. Hulley. Mr. Southern. OY4/G3.3.21 March 3rd. 1921. X3563 X3499 X3901 X3456 Mr. Claude Johnson Managing Director, Rolls-Royce Ltd., London,… | ||
| Scan141 | Comparison of different radiator thermostat and shutter systems, including Galli-ator and Columbia schemes. | ||
| View original record | contd. -2- OY4/G3.3.21. on Rolls-Royce and other cars in this country. About thirty Rolls-Royce cars have now been fitted with this device, apparently with complete success. A sample Galli-ator outfit… | ||
| Scan142 | Radiator freezing issues and the proposal for developing automatic shutters to improve winter performance. | ||
| View original record | contd. -3- (It is to be noted that in zero weather most American drivers who had to have their car out for say three or four hours, would run the water off, unless they were sure they had plenty of… | ||
| Scan143 | Issues with the top radiator bracket being too springy on cars with high radiators. | ||
| View original record | x 3456 AT 2 Date from EP. C. to By. C. to Hs. C. to Er. EP20/P.S.3.21. x 3456 x 366 x 3923 RE. TOP RADIATOR BRACKET. In discussing this point with Hs recently, we are of the opinion that with the… | ||
| Scan144 | Potential cost-saving benefits of using American extruded copper radiator tubes over brass drawn tubes. | ||
| View original record | M H. 224A (100 T) (S. H. 708, 10-12-20) G. 2047 x 3456 COPY To R. from Hs. c. to CJ. c. to E. c. to BY. c. to Da. Hs2/LG24.3.21. X.3652 X3456 RADIATOR TUBES. The extruded copper tubes which they make… | ||
| Scan145 | Redesigning the 40/50 HP radiator suspension brackets from drop forgings to sheet metal. | ||
| View original record | X.3456. 31.3.21. RE VISIT OF MESSRS. WORMALD AND HIVES TO WEST WITTERING, SATURDAY MARCH 19TH 21. Extract from E6/G31.3.21 -------- (1) 40/50 H.P. RADIATOR SUSPENSION BRACKETS. X.3456 The radiator… | ||
| Scan146 | Testing extruded copper tubes for radiators as a cheaper alternative to brass drawn tubes. | ||
| View original record | X3458 To Hs. from R. c. to CJ. c. to BY. c. to R.R.America Inc. for attention of OY. RE/G11.4.21. X.3456 EXTRUDED COPPER TUBES FOR RADIATORS. X.3678 X.3678 With reference to extruded copper tubes,… | ||
| Scan147 | Supply and cost comparison of extruded copper tubes for radiators. | ||
| View original record | X 3456 EWT. for R.R. Inc. for the attention of OY. c. to Na. c. to CJ. Hs11/LG14.4.21. X.3678 X.3456 EXTRUDED COPPER TUBES FOR RADIATORS. With reference to R5/G11.4.21. I take it that you will supply… | ||
| Scan148 | Proposing an experiment to reduce thermostat 'hunting' by repositioning it. | ||
| View original record | To Hs. from R. c. to CJ. c. to EFC. X 3456 X. 3456 X. 3902 RE. THERMOSTAT CONTROL. On some previous occasions you reported that this apparatus hunts. It has occurred to me that if the thermostat were… | ||
| Scan149 | Inquiry regarding the need for a larger radiator for a chassis to handle a 16-mile climb in 120°F temperatures without boiling. | ||
| View original record | R.R. 199 (250T) (SDc76 19-7-17) M/P180865 X3456 U. EH. from BY. REC'D 9 MAY 1921 NY3-P RADIATORS. We have received a request from Sales in regard to an enquiry for a chassis that it will be necessary… | ||
| Scan150 | Extract concerning U.S.A. complaints about vehicle starting and running issues due to low-grade fuel and cold winters. | ||
| View original record | X3456 Extract from R10/G8.6.21. X.3614 - RE U.S.A. COMPLAINTS. X.4305. STARTING, SLOW RUNNING AND TROUBLES DUE TO LOW X.3456. GRADE FUEL AND EXTREMELY COLD WINTERS. X.3678. I have suggested and agreed… | ||
| Scan151 | Engine modifications related to carburetter position and induction system heating. | ||
| View original record | Contd. -2- R10/G8.6.21. I do not think you or we are sufficiently sure of our conclusions of modifications that should be made for me to give final instructions, but below is given my views of the… | ||
| Scan152 | Improving engine starting by using a small additional carburetter instead of a choke. | ||
| View original record | Contd. -3- R10/G8.6.21. This seems comparatively easy and practicable but we do not know just yet whether this is sufficient or all we can do. Regarding the starting, this seems to be entirely a… | ||
| Scan153 | Design improvement for the new 20 HP chassis. | ||
| View original record | Contd. -4- R10/G8.6.21. demonstrate the efficiency. A better and more easily applied and more accessible design is required; this is in hand and has been applied to the new 20 H.P. chassis. | ||
| Scan154 | Comparing the anti-tarnishing properties of Monel Metal and nickel silver for radiator construction. | ||
| View original record | X3456 To R. from Hs. c. to CJ. c. to E. c. to Da. c. to BY. Hs1/LG24.6.21. X.4306 X.3456 MONEL METAL. As you are aware we have received from America some sheets of Monel Metal suitable for building a… | ||
| Scan155 | Extruded copper tubes for radiators, including pricing and manufacturing methods. | ||
| View original record | R.H. 135A (100 T) (S & H. 782. 10-12-20) G. 2947 X3456 R. from Wd. c. to GJ. c. to Hs. c. to Hy. X 3456 (crossed out) X 3678 Wd8/NJS.8.8.21. Re Extruded Copper Tubes for Radiators. In response to R's… | ||
| Scan156 | Sourcing of standard hand-operated louvres for the 40/50 HP model. | ||
| View original record | X3456 To R.R. Of America Inc. from R. for the attention of OY. c. to CJ. c. to Hs. c. to BY. R6/G11.8.21. X.3456 - RE 40/50 HP. HAND OPERATED LOUVRES. Owing to the pressure of other work, we have not… | ||
| Scan157 | On the testing, cost, and potential UK sourcing of extruded copper tubes for radiators. | ||
| View original record | X 3456 To R. from Hs. c. to CJ. c. to E. c. to De. c. to EY. c. to EWT. for R.R.Inc. Hs1/LG20.8.21 X.3652 EXTRUDED COPPER TUBES FOR RADIATOR. X.3678 X.3456 We have completed 100 hours running on the… | ||
| Scan158 | Experimental radiator cowl to improve cooling on the 40/50 HP armoured car for sand tests. | ||
| View original record | X3456 To Hs. from Da. Da3/G23. 8. 21. RE. 40/50 H.P. COOLING. X.4195 X.3438 X.3456 The armoured car people some time ago found trouble with the cooling of the standard car on the sand test, and they… | ||
| Scan159 | Customer complaints about engine overheating and radiator water loss. | ||
| View original record | X.3456 Hs. from EP c. to BY. c. to Hr. EP4/H25.8.21. X.766 X.3456 CHASSIS - WATER BOILING AND LOSS OF WATER. We still continue to receive complaints of water boiling and consequent loss of water,… | ||
| Scan160 | Leaking radiator tubes caused by the omission of a rubber washer at the rear end. | ||
| View original record | R.R. 199 (250T) (SD679 19-7-17) MP180865 X3456 EP. from BY. c. Hs. BY5-P2.9.21. X3456 CHASSIS - RADIATORS. Referring to your memo EP/Thn12/H26821, with regard to radiator tubes leaking, and dealing… | ||
| Scan161 | Issue of water loss due to boiling during hill climbing and potential solutions. | ||
| View original record | To CJ. from R. c. to EF. c. to HS. c. to PN. c. to Works Committee X3456 RS/GS.9.21. X.4412 - RE LOSS OF WATER IN HILL CLIMBING. X3456 X819.X766 X.1298 CJ13/ET.9.21. It is not thought that the present… | ||
| Scan162 | Letter discussing the use of extruded copper tubes in radiators to address engine overheating issues. | ||
| View original record | cc Mr. Nadin Mr. Belnap Mr. Bagnall X3456 Cyl - G 12921 Sept. 12, 1921 Mr. Claude Johnson, Managing Director, Rolls-Royce Ltd., London, England. Attention: Messrs. F.H.Royce & Hives. Dear Sir:- Re:… | ||
| Scan163 | Proposing the standardisation of a smaller pulley to resolve issues of radiator water boiling at high altitudes. | ||
| View original record | X3456 Hs. from BY. BY1-P19.9.21. CHASSIS - RADIATORS. RE WATER BOILING. X.3456 / x766 In view of the fact that the smaller pulley we despatched to Paris to overcome the customers complaint, who was… | ||
| Scan164 | The testing of a radiator cowl designed to prevent water loss from boiling in experimental and armoured cars. | ||
| View original record | Da. from Hs. X3456 x766 With reference to your telegram asking whether any results have been obtained by the cowl to the radiator. We have had a cowl made and it is ready for test. We are using one… | ||
| Scan165 | Telegram received by telephone regarding the results of cowlings over radiator fans on a 40/50 chassis. | ||
| View original record | R.R. 144A (100B.) SE 867. 9.7.18 MP 193871 ROLLS-ROYCE LIMITED. M.D TELEGRAM RECEIVED BY TELEPHONE. X3456 Time Received: 11.8 Date: 21 To: Roycar Derby By: GH from: Wittering 10.15 STAMP: RECEIVED 23… | ||
| Scan166 | Confirmation of a telegram regarding a meeting and suggestions for a USA winter programme. | ||
| View original record | X3456 CONFIRMATION OF TELEGRAM. TELEPHONED TO CHICHESTER. 10th.Oct. 1921. ROYCAR DERBY. X. 3678 X. 3456 X. 4305 HIVES ARRANGE TO MEET AT ROYSTON THURSDAY TWENTIETH EARLY AFTERNOON U S A WINTER… | ||
| Scan167 | Engine overheating issues in the Swiss Alps and proposed solutions. | ||
| View original record | Hs. from EP. S. to BY. e. to E. ev. to Hr. X3421 X4394 Re OVERHEATING. [STAMPED] OCT 1 X3456 F.R. FR3 EP9/H14.10.21. X766 X3456 In dealing with the question of Water Boiling on the Swiss Alps, which I… | ||
| Scan168 | Internal memorandum regarding comparative testing on the efficiency of extruded copper tubes versus brass tubes for radiators. | ||
| View original record | X3456 EWT. for R.R.Inc. From Hs. Hs6/LG6.12.21. EXTRUDED COPPER TUBES FOR RADIATOR. OYI/G12.9.21. So far we have not been able to make comparative tests as regards the efficiency of the copper tubes… | ||
| Scan169 | Test results comparing a standard radiator with a radiator fitted with copper tubes. | ||
| View original record | Mr. Hives from GWH. X3456 13.1.22. TESTS WITH STANDARD RADIATOR AND RADIATOR WITH COPPER TUBES. Standard. M.P.H. | Start | 1/2 mile | 1 mile | 1 1/2 mile | 2 miles | 2 1/2 miles | 3 miles 30 | 130°F |… | ||
| Scan170 | Radiator tests comparing a standard radiator to a 'Sofr' radiator, with temperature readings recorded at various intervals. | ||
| View original record | WM 26/10M PKD'S (SH 686 9-11-20) MP 231103 X3456 ROLLS-ROYCE LTD. INSTRUCTIONS. To Mr Hives 7/2/ 1922 Order No. Customer's No. Radiator Tests on 49 G1B Standard radiator & Sofr radiator with… | ||
| Scan171 | Comparative test measuring the velocity of air passing through the radiators of the 40/50 and Goshawk II engines. | ||
| View original record | X3456 Hs1/T30.5.22. To R. from Hs. c. to CJ. c. to K. c. to Da. c. to By. c. to EP. c. to Hy. (Laval). RE GOSHAWK II. COOLING X1351 X3456 X3438 X3472 X766 X4240 X4237 X4031 We have made a comparative… | ||
| Scan172 | Tests on a Goshawk engine to reduce water loss and comparing its performance to the 40/50 model. | ||
| View original record | Contd. -2- Hsl/TSO.5.22. different fans, some designed by outside specialists in this class of work, but we found that none of them gave as good results as the type we use on the 40/50. We have also… | ||
| Scan173 | Comparison of engine overheating characteristics between the 40/50 and Goshawk models, including thermometer reliability. | ||
| View original record | Contd. -3- Hsl/T30.5.22. In one way we may be fortunate in the 40/50, inasmuch that even if the car is run without water we do not crack cylinders. There have been any number of cases where the cars… | ||
| Scan174 | Dynamometer testing of a Goshawk radiator and a 40/50 car's cooling performance. | ||
| View original record | To R. from Hs. c. to CJ. c. to E. c. to Da. c. to BY. c. to EP. X3456 HS4/LG9.6.22. GOSHAWK RADIATOR X.4240. X.3456. With the 40/50 car running on the road wheel dynamometer, we cannot run full power… | ||
| Scan175 | Inquiry into the effects of engine overheating due to water loss from a leak and the potential for an alarm signal. | ||
| View original record | To Ms. from R. Y3456 R1/M9.6.22. X.3456. X.786. of In investigation/the effects of overheating of the water, we want you to tell us whether loss of water by ordinary drainage such as would occur with… | ||
| Scan176 | Technical memorandum discussing experiments on the 40/50 engine's cooling system to prevent water loss. | ||
| View original record | To R from Hs c. to CJ. c. to E. c. to Da. c. to BY. c. to EP. X3456 Hsl/LG 5.6.22. 40/50 COOLING. X.766 X1757 X.3456 X.4225 There have been a great number of cases where a 40/50 engine has been run… | ||
| Scan177 | Comparative tests of water loss from a car's radiator under boiling conditions. | ||
| View original record | contd:- -2- (4) A chimney type filler cap was used, as used on the Austrian Trials cars. We tried various means of making comparative tests. One condition was that the car was run on the dynamometer… | ||
| Scan178 | Modifications to a chassis for Mr. Riedemann to prevent engine boiling, including fitting a larger radiator. | ||
| View original record | [STAMPED]: 15 AUG 1922 [STAMPED]: RECEIVED 15 AUG 1922 M.L. [HANDWRITTEN]: 89 BY4/H. 12. 8. 22. W/S. RE MR RIEDEMANN. [HANDWRITTEN ANNOTATION IN LEFT MARGIN]: So far agree that higher Compression is… | ||
| Scan179 | Short handwritten note asking for an opinion on a referenced item. | ||
| View original record | H.R. 53/a (100 T) (S.H. 798. 10-12-20) G. 2948 Hs. X8456 What do you think about this? X790 / X3456 R. 9-10-22 [STAMP] RECEIVED Hs OCT 20 1922 | ||
| Scan180 | Directive to fit radiator louvres and thermometers to all 40/50s and Goshawk cars to maintain high engine temperatures. | ||
| View original record | X.3456. Extract from R3/M1.9.22, X.3614. LOUVRES (RADIATOR) WITH THERMOMETER. X.3456. It is now agreed that the lower grade of petrol demands the engine temperature to be maintained as high as… | ||
| Scan181 | Suitability of a deeper radiator and larger fan for cars intended for use in Switzerland and India. | ||
| View original record | To Hs. from R. c. to CJ. c. to BJ. c. to BY. X5456 R2/M9.10.22. RE. SWITZERLAND AND INDIA X.3456 X.3438 X.790 As far as I am aware the 3" deeper (taller) radiator would be much overdoing it, and would… | ||
| Scan182 | Instruction sheet for Mr. Hives regarding an experimental radiator from The Excelsior Radiator Co. | ||
| View original record | RR 26 (10M BKS) (SK 185 8-10-22) MP 280735 ROLLS-ROYCE LTD. INSTRUCTIONS. To: Mr. Hives Order No.: Experimental Customer's No.: 1 Radiator E17143. from. The Excelsior Radiator Co. Leeds Mr. Swift has… | ||
| Scan183 | Sample radiator tube made by Electro Deposition compared to existing manufacturing processes. | ||
| View original record | X3456 BY. from ROY. c. to Hs. ROY12/MG26.1.23 Attached is sample Radiator tube made up by Metals Reproduction Limited by Electro Deposition which they are putting forward for Radiator manufacture,… | ||
| Scan184 | Sample radiators from Excelsior Radiator Company and a request to compare them with the existing supplier, Marstons. | ||
| View original record | X3456 frevenis Hs. from ROY. ROY5/MG31.1.23 Excelsior Radiator Company The Excelsior Radiator Company, Leeds, an offshoot of Kynochs, and, I believe, associated with Greenwood & Batley, have sent in a… | ||
| Scan185 | Standardisation proposal to change radiator tank corners from a radius to sharp corners to improve appearance. | ||
| View original record | R R 765 (1 H) (S H 268, 20-9-20) G 8954 Y/3456 STANDARDISATION of CHASSIS PARTS. Date 21.3.23. No. 3456 Description of Parts. SHARP CORNERS ON RADIATOR TANK IN PLACE OF RADIUS. Origin. To improve… | ||
| Scan186 | Review document for a proposed modification to a chassis brake corner part. | ||
| View original record | STANDARDISATION of CHASSIS PARTS Description of Part: BRAKE CORNER on MAXIMUM TURN IN PLACE OF RADIUS No. X 2626 Origin: To improve appearance. Experimental Test Report: This modification is required… | ||
| Scan187 | Containing an extract from a letter concerning sample radiator tubes, their quality, and strength. | ||
| View original record | V/3456 BY from ROY. c. to Hs. May 4th.1923 ROY12/MG30.4.23 Further to ROY9/MG30.4.23. Below please find extract from letter received from Metals Reproduction Ltd in this connection. "The remarks about… | ||
| Scan188 | Follow-up from The Excelsior Motor Radiator Co. of Leeds, regarding the final test status of two sample radiators. | ||
| View original record | Hs. [Handwritten]: X3456 [Underlined]: Wd/Dn8/HP3.5.23. Kindly note that The Excelsior Motor Radiator Co. of Leeds., have written regarding the two sample radiators supplied by them. They wish to be… | ||
| Scan189 | Tests to prevent water loss from a radiator due to boiling. | ||
| View original record | X. 3456 B.E. 493 (40 H) (SL 42 12-7-23). J.H., D. EXPERIMENTAL REPORT. sent out 6.9.23. COPIES TO: R.C.J. BJ. WOR. By. E. Da. EP. PN. OY. X. 766 Expl. No. X. 3456 REF. Hs1/LG21.8.23. OBJECT OF TEST.… | ||
| Scan190 | Tests conducted to prevent water loss from engine radiators due to boiling. | ||
| View original record | R.R. 403A (40 H) (SL 42 12-7-23). J.H.D. EXPERIMENTAL REPORT. Expl. No. REF: Hs1/LG21 8.23. TESTS TO PREVENT LOSS OF WATER DUE TO BOILING. A series of tests were taken with various schemes to try and… | ||
| Scan191 | Modifications to the radiator and cooling system, including water pipes, steam separators, and filler caps. | ||
| View original record | R.R. 403A (40 H) (SL 13 12-7-23). J.H.D. EXPERIMENTAL REPORT. Expl. No. REF: Hsl/LG21.8.23. 2. An additional top water pipe taken from the core plug holes near the valve pockets. This separate pipe… | ||
| Scan192 | Testing a pressurised cooling system to prevent water from boiling readily. | ||
| View original record | Y3456 B.R. 493 (40 H) (SL 42 12-7-23). J.H., D. EXPERIMENTAL REPORT. COPIES TO: R.CJ. WCR. By. E. Da. EP. OY. RA. Expl. No. X.766 X.3456 REF. Hsl/LG14. 9. 23. OBJECT OF TEST. To provide means to… | ||
| Scan193 | With a diagram suggesting a new method for applying a scheme to radiators. | ||
| View original record | R.R. 692A (40 H) (SL 42 12-7-23). J.H., D. EXPERIMENTAL REPORT. Expl. No. REF: (3) Pump gland must be good - on the two engines we have tested we have had no trouble. We consider it might be worth… | ||
| Scan194 | Increasing the boiling point of water in a radiator by subjecting it to pressure. | ||
| View original record | R.R. 403A (40 H) (SL 42 12-7-23). J.H. D. EXPERIMENTAL REPORT. Expl. No. REF: METHOD OF INCREASING THE BOILING POINT OF WATER IN THE RADIATOR BY SUBJECTING IT TO PRESSURE. The following tests were… | ||
| Scan195 | Testing a pressurized radiator system to increase the boiling point of water. | ||
| View original record | R.R. 403A (40 H) (SL 42 12-7-23). J.H., D. EXPERIMENTAL REPORT. Expl. No. ______ REF: ______ Test 1. It was definitely proved that by increasing the pressure on the water in the radiator above… | ||
| Scan196 | Page showing boiling points and engine temperature data tables. | ||
| View original record | R.R. 405A (40 H) (SL 12 18-7-23). J.H.D. -2- EXPERIMENTAL REPORT. Expl. No. REF: determined by the venturi meter, remaining normal up to the increased boiling point. Afterwards a reduction in flow… | ||
| Scan197 | Road tests on engine cooling performance during a hill climb. | ||
| View original record | R.R. 493A (40 H) (SL 42 12-7-23). J.H., D. EXPERIMENTAL REPORT. -3- Expl. No. REF: ROAD TESTS. Taken on 49-GB - standard engine - 4 to 1 compression ratio. - Standard fan and radiator. Tests taken on… | ||
| Scan198 | Technical data sheet comparing specifications for Goshawk-II and 40/50 HP radiators. | ||
| View original record | X.3456 DETAILS OF GOSHAWK-II AND 40/50 HP. RADIATORS X.4240 X.3456 14.9.23. DETAILS. | Present G.11. Rad. E.51467 | Expl: G.11 Rad. E.52161 | 40/50 HP. Standard. | Marmon. --- | --- | --- | --- | ---… | ||
| Scan199 | Specifications for the 40/50 model's radiator and fan, including water capacity and pulley diameters. | ||
| View original record | X3456 29.9.23. 40/50 - RADIATOR - AND FAN. Y3456 X.3438 Capacity of 40/50 HP. water system -- 7 galls. 3 1/4 pts. Dia. of bottom of crankshaft pulley - 4.837". Dia. of bottom of Fan pulley-------… | ||
| Scan200 | Modifying the chassis cooling system for better performance in cold weather. | ||
| View original record | To Hs. from R. BY. c. to CJ. Wor. c. to Rg. X3456 R6/M21.11.23. RE. 40/50 - X.3456 X.3499 I am certain that this chassis would give better satisfaction in the colder weather if the radiator was fitted… | ||
| Scan201 | Test data sheet recording the temperature of air at the rear of the fan in relation to water temperature at speeds of 25 and 45 mph. | ||
| View original record | X3456 (copied. - 15.10.23. 30.11.23.) TEMPERATURE OF AIR AT REAR OF FAN IN RELATION TO WATER TEMPERATURE. Speed 25 m.p.h. Centigrade Scale. X3456 X3438 Atmosphere. 10°C | 10 | 10 | 10 | 10 | 10 | 10 |… | ||
| Scan202 | Modifications to carburetter and radiator shutter controls. | ||
| View original record | To BY. & HS. from R. c. to CH. BJ. RG. DA. E. PN. 42456 S E C R E T. FL/M8.8.24. E. A. C. 11. CONTROLS. X.9240 X.9250 X.3456 In consequence of the multiplicity of fittings on the instrument board, we… | ||
| Scan203 | Investigation into the cause of a radiator bursting on a 40/50 HP car. | ||
| View original record | Y3456 SECRET To BJ. from R. c. to BY. HS. EP. PN. H. R3/M8. 8.24. Re. E.A.C. AND 40/50 RADIATORS. X.3456 X.9240 With regard to the incident of the radiator bursting recently on a 40/50 HP. car, as… | ||
| Scan204 | Examination of a reported 40/50 HP radiator bursting, finding the fault to be faulty soldering rather than a burst. | ||
| View original record | X3456 R. C. Hs. C. Bs. C. H. C. Pn. RADIATORS. Referring to R3/M. 8. 8. 24 and dealing particularly with the supposed bursting of the 40/50 HP. radiator referred to, upon receipt of Sales' original… | ||
| Scan205 | Issue of engine water boiling in the 40/50 HP model and potential solutions. | ||
| View original record | To BY. HS. RG. CJ. BJ. PN. } FROM R. E. DA. EP. } X/32656 R2/M21.8.24. RE. BOILING WATER. in 40/50 HP. X.766 X.3456 X.4214. (1) We ought to make the car right without boiling when [text struck… | ||
| Scan206 | Technical discussion on engine cooling issues, comparing fan and radiator performance to a Hispano model. | ||
| View original record | contd :- -2- a small amount of water as steam. Water thrown out by expansion and steam bubbles is I believe making all the fuss and distress. (7) Our fan has always been very large and efficient… | ||
| Scan207 | Engine cooling systems, comparing radiator design and water circulation with a Hispano system. | ||
| View original record | contd :- -3- dynamometer. Its radiator has larger face area than ours, and possibly more efficient exit of heated air through louvres. Letting the heated air escape, firstly by louvred bonnet: and… | ||
| Scan208 | Over-heating issues, radiator tests, and comparisons between EAC, Hispano, and 40/50 HP models. | ||
| View original record | To B.J. from Hs. c. to PN. c. to CJ. X3456 Hs3/LG22. 8.24. RE. OVER-HEATING. X766 X1751 X3456 We will certainly put the question to R. of sending an EAC. car to Spain. At the present moment, however,… | ||
| Scan209 | New radiator, its potential standardisation for the 40/50 HP, and sending a car to Italy. | ||
| View original record | contd:- -2- with this radiator towards the end of next week. We should like your agreement that we could send this car to Italy. If this radiator is successful, it could be adopted, as soon as it is… | ||
| Scan210 | Investigating boiling troubles in a radiator. | ||
| View original record | R.R. 493 (40 H) (SL 42 12-7-23). J.H., D. X3456 EXPERIMENTAL REPORT. COPIES TO: R.C.J. BJ. WOR. By. E. Da. EP. PN. OY. Expl. No. 785 OBJECT OF TEST. To investigate boiling troubles. TESTER. A. C.… | ||
| Scan211 | Page discussing heat flow to the jacket water and temperatures on a test bed engine under full load. | ||
| View original record | contd:- -2- the radiator, the heat flow to the jacket water when the engine is operating under full load, and the air and water temperatures. The heat flow to the jacket water was taken on the test… | ||
| Scan212 | Radiator performance test results for a 40/50 HP engine under various conditions. | ||
| View original record | RADIATOR TESTS ON 40/50 HP. Temp. in °C. but Ht. units in B.T.Us. per min. | Condit ions. | Eng. revs. per min. | Lbs. of water passing through radiator per min. | Radiator water. | Air flow through… | ||
| Scan213 | Graph comparing the cooling performance of a 40/50 model against a Hispano Suiza during a hill climb test. | ||
| View original record | COMPARATIVE COOLING TESTS ROLLS ROYCE 40/50 & HISPANO SUIZA SWINSCOE HILL CLIMB (FULL THROTTLE) AV SPEED 30 MPH RADIATOR TEMPERATURES °C MILES RR 40/50 STANDARD. NO FAN. NO BONNET. HISPANO SUIZA… | ||
| Scan214 | Blank page with a 'Print Room' receiving stamp. | ||
| View original record | ROLLS-ROYCE, Limited PRINT ROOM, 26 AUG. 26. DERBY | ||
| Scan215 | Graph comparing the cooling performance of a 40/50 model against a Hispano Suiza at an average speed of 35 mph. | ||
| View original record | COMPARATIVE COOLING TESTS Rolls Royce & HISPANO SUIZA. AVERAGE SPEED 35 M.P.H. RADIATOR TEMPERATURES MILES RR 40/50 STANDARD OUTWARD TRIP " " NO BONNET RETURN TRIP HISPANO SUIZA STANDARD OUTWARD TRIP… | ||
| Scan216 | Graphs showing radiator, water, and air temperature test results for a 40/50 HP car on a dynamometer. | ||
| View original record | RADIATOR TESTS ON 40/50 HP CAR L49.GBJ 20° metric STD RADIATOR & FAN. THERMOSTAT REMOVED. TESTED ON DYNAMOMETER. CURVES SHOWING THE AMOUNT OF HEAT WHICH THE RADIATOR CAN DISSIPATE. FOR THESE TESTS THE… | ||
| Scan217 | Blank document page with a 'Print Room' stamp. | ||
| View original record | ROLLS-ROYCE, LIMITED PRINT ROOM. 26 AUG. 24. DERBY | ||
| Scan218 | Secret internal memorandum discussing car radiator and fan design for the 20 HP and 40/50 HP models. | ||
| View original record | V324-50 S E C R E T. To RG. HS. } FROM R. c. to CJ. BJ. DA. E. BY. EP. RL/M29.8.24. RE. VISIT OF RG & HS. TO WW. ON 27th. & 28th. INST. X.766 X.3456 X.3438 RE. CAR RADIATORS. X.9250 X.4214 X.4240 From… | ||
| Scan219 | Engine cooling issues, fan efficiency, bonnet lift, and preventing water loss from boiling. | ||
| View original record | contd :- -2- that not one car in 500 is satisfactory under full throttle, low speed, and hot weather, and the larger the engine the greater the deficit. Careful comparison will be made: reports are… | ||
| Scan220 | On engine overheating, comparing heat transfer to water in high versus low compression engines. | ||
| View original record | To R. from Hs. c. to CJ. Ed. [crossed out] c. to RG. H. [crossed out] c. to RV. BA. [crossed out] X3456 Hs1/LG8.9.24. OVER-HEATING. X766 X3456 [crossed out] Our tests have proved that we get less heat… | ||
| Scan221 | The relative amounts of heat rejected to cooling water, referencing Ricardo's tests on engine compression ratios. | ||
| View original record | R.R. 493A (40 H) (SL 42 12-7-28). J.H.,D. EXPERIMENTAL REPORT. Expl. No. REF: Hs/Rn/LGS.9.24. RELATIVE AMOUNTS OF HEAT LIKELY TO BE REJECTED TO COOLING WATER. 40/50 & EAG. Ricardo states that in a… | ||
| Scan222 | Comparing heat loss and cooling efficiency of the E.A.C. car against the 40/50 HP model. | ||
| View original record | R.R. 403A (40 H) (SL 42 12-7-28). J.H., D. -2- EXPERIMENTAL REPORT. Expl. No. REF: Hs/Rm/LGS. 9.9.24. Now in these two tests the shape of the combustion chamber was identical: in our case, though we… | ||
| Scan223 | Radiator tests. | ||
| View original record | Y3456 R.R. 493 (40 H) (SL 42 12-7-23). J.H. D. EXPERIMENTAL REPORT. COPIES TO: RCJ BJ. WOR. By E. Da EP PN OY. RG Expl. No. 3456 REF. HS5/LG11.9.24. OBJECT OF TEST. Radiator tests. TESTER. A. C.… | ||
| Scan224 | Radiator tests and heat transfer to jacket water on a standard 40/50 HP car. | ||
| View original record | R.R. 403A (40 H) (SL 42 12-7-23). J.H. D. EXPERIMENTAL REPORT. Expl. No. REF: Hs/ACL/LG11. 9. 24. RADIATOR TESTS AND HEAT GIVEN TO JACKET WATER ON STANDARD 40/50 HP. CAR. The following tests were… | ||
| Scan225 | Heat dissipation from the radiator under various engine loads. | ||
| View original record | R.R. 403A (40 H) (SL 42 12-7-23). J.H.D. -2- EXPERIMENTAL REPORT. Expl. No. REF: Hs/ACL/LG11.9.24. Eng: R.P.M. B.HP. at rear wheels. Full load. B.Th.U's/min. to cooling water. Full load. Half load.… | ||
| Scan226 | Engine cooling issues, specifically addressing fan belt slippage and the tendency to boil on hills. | ||
| View original record | R.R. 403A (40 H) (SL 42 12-7-23). J.H., D. -3- Expl. No. REF Hs/ACL/LG11.9.24. EXPERIMENTAL REPORT. at 22°C for all tests. It was found that a slipping fan belt greatly impaired the cooling capacity… | ||
| Scan227 | Engine cooling performance and water temperature during hill climbing scenarios. | ||
| View original record | R.R. 403A (40 H) (SL 42 12-7-23). J.H. D. -4- EXPERIMENTAL REPORT. Expl. No. REF. Hs/ACL/LG11.9.24. the water temperature would rise until it reached boiling point. We have however the alternative of… | ||
| Scan228 | Radiator heat dissipation and the influence of outside air temperature. | ||
| View original record | R.R. 493A (40 H) (SL 42 12-7-28). J.H., D. -5- EXPERIMENTAL REPORT. Expl. No. REF: Hs/ACL/LG11.9.24. greater than when on full load. The above is only given as an example and is intended to show the… | ||
| Scan229 | Page from a report discussing average radiator temperature and the density of air flowing through the core. | ||
| View original record | contd :- -6- average radiator temperature and the average temperature of the air flowing through the radiator core. No account has been taken of the change xx of density of the air. Hs/ACL. | ||
| Scan230 | Graph plotting heat flow to jacket water against brake horsepower at the road wheels for a 40/50 HP engine at various loads. | ||
| View original record | SHEET. 4. 40/50 H.P. HEAT FLOW TO JACKET WATER FOR VARIOUS LOADS PLOTTED AGAINST H.P. AT ROAD WHEELS. Y-AXIS: B.T.U.s/MIN TO COOLING WATER. X-AXIS: B.H.P AT REAR WHEELS. DATA LABELS: FULL LOAD, 1/2… | ||
| Scan231 | Blank document page with a red ink stamp from the print room. | ||
| View original record | ROLLS-ROYCE, LIMITED PRINT ROOM. 11 SEP. 24 DERBY | ||
| Scan232 | Graph plotting heat flow to jacket water per litre against engine RPM for a 40/50 HP high compression car. | ||
| View original record | SHEET 3. HT. FLOW TO JACKET WATER PER LITRE 40/50 H.P. CAR HIGH COMPN. HEAT FLOW/LITRE AT FULL LOAD Y-AXIS: B.TH.U's/MIN/LITRE. X-AXIS: R.P.M. ENG. AXIS VALUES: 200, 300, 400, 500, 1000, 1500, 2000. | ||
| Scan233 | Curve showing the horsepower required to drive a 40/50 HP car up a 1 in 12 gradient. | ||
| View original record | SHEET 2. CURVE SHOWING HP. REQ TO DRIVE 40/50 HP. CAR UP A 1 IN 12 GRADIENT WT. OF CAR ASSUMED TO BE 2 TON. THE CURVE SHOWING POWER REQUIRED IS CALCULATED FROM FIGURES OBTAINED FOR THE TRACTIVE… | ||
| Scan234 | Graph showing heat given to jacket water and dissipated by the radiator for a 40/50 HP car. | ||
| View original record | SHEET 1 40/50 HP. CAR. CURVES SHOWING HEAT GIVEN TO JACKET WATER BY ENGINE AND HEAT DISSIPATED BY RADIATOR WITH & WITHOUT BONNET. CURVE ① HT. GIVEN TO WATER FULL LOAD. CURVE ② HT. GIVEN TO WATER 1/2… | ||
| Scan235 | The reverse side of a document showing a 'Print Room' date stamp from Derby. | ||
| View original record | PRINT ROOM 11 SEP. 26 DERBY | ||
| Scan236 | Tests conducted on 40/50 HP radiators to alleviate boiling issues. | ||
| View original record | R.R. 403A (40 H) (SL 42 12-7-23). J.H., D. V3456 EXPERIMENTAL REPORT. Expl. No. 3456 REF: Hs1/LG11.9.24. To R. from Hs. c. to CJ. BJ. c. to E. RG. c. to DA. BY. c. to Wor. 40/50 HP. RADIATORS. X3456… | ||
| Scan237 | Fan efficiency, comparing R-R to Hispano, and analysing fan belt performance at various speeds. | ||
| View original record | R.R. 403A (40 H) (SL 12 19-7-28). J.H.D. -2- EXPERIMENTAL REPORT. Expl. No. 3456 REF: Hs1/LG11.9.24 dependent on our fan to maintain our radiator efficiency. In a test on a certain hill comparing the… | ||
| Scan238 | Engine cooling issues, discussing fan belt improvements and bonnet ventilation tests. | ||
| View original record | R.R. 403A (40 H) (SL 42 12-7-28). J.H., D. -3- EXPERIMENTAL REPORT. Expl. No. REF: Hs1/LG11.9.24. driver has tightened the fan belt in the morning, if he runs the car at high speeds for any length of… | ||
| Scan239 | Engine cooling improvements and boiling tests. | ||
| View original record | H.R. 493A (40 H) (SL 42 13-7-23). J.H.,D. -4- EXPERIMENTAL REPORT. Expl. No. REF: Hs1/LG11.9.24. The tests are being continued. As far as we can see there are three ways in which improvement can be… | ||
| Scan240 | Statement on the boiling limits of 20 HP and 40/50 HP cars without causing damage. | ||
| View original record | contd :- -2- Hsl/LG11.9.24. ----------- that it is not serious if the car boils because there is a limit to which this can go on - there is no possible means of his knowing when he has reached that… | ||
| Scan241 | Fan speed ratios for the 40/50 HP car and issuing a correction to a previously circulated blueprint. | ||
| View original record | X3456 To R. from Hs. c.c. to CJ. BJ. c.c. to RG. E. c.c. to DA. Wor. c.c. to EY. Hs3/LG11.9.24. FAN SPEEDS. X3456 The ratio of our Fan Drive on the standard 40/50 HP. car is 1.2 times engine speed.… | ||
| Scan242 | Specification sheet for the 40/50 model radiator and cylinder block, detailing weights and water capacities. | ||
| View original record | V3456 17.9.24. 40/50 RADIATOR - CYL:BLOCK. X3456 / Y200 X.3437 Size of matrix. Wt. of rad: with this matrix. Water equivalent of this radiator. Water capacity of radiator with this matrix. 20 1/2" 96… | ||
| Scan243 | Tests to alleviate engine boiling on the 40/50 HP model. | ||
| View original record | R.R. 403 (40 H) (SL 42 12-7-23). J.H. D. X3456 EXPERIMENTAL REPORT. COPIES TO: R.C.J. BJ. WOR. By E. Da. EP. PN. OY. RG Expl. No. 488 REF. Hs10/LG18.9.24. OBJECT OF TEST. To alleviate boiling on the… | ||
| Scan244 | Alleviating boiling troubles by hill climbing on indirect gears. | ||
| View original record | R.R. 493A (40 H) (SL 42 12-7-23). J.H.D. EXPERIMENTAL REPORT. Expl. No. REF. Hs/Rm/LG18.9.24. ALLEVIATING BOILING TROUBLES BY HILL CLIMBING ON INDIRECT GEARS. These tests were under-taken to confirm… | ||
| Scan245 | Engine cooling performance, focusing on fan belt slip and the effects of gear selection on radiator temperature. | ||
| View original record | R.R. 493A (40 H) (SL 42 12-7-23). J.H.D. -2- EXPERIMENTAL REPORT. Expl. No. REF: Hs/Rm/LG18. 9. 24. Second gear creates an apparent paradox, however, for the finishing temperature in this case rises… | ||
| Scan246 | Engine cooling performance, comparing the effects of different gears and fan belt tension. | ||
| View original record | R.R. 493A (40 H) (SL 42 12-7-23). J.H., D. -3- EXPERIMENTAL REPORT. Expl. No. REF Hs/Rn/LG18.9.24. To counteract this we have the fact that the same amount of work (approx.) is done in a very much… | ||
| Scan247 | Three graphs illustrating radiator temperature tests conducted on Cat and Fiddle Hill, analyzing overheating when climbing. | ||
| View original record | RADIATOR TESTS. CAT AND FIDDLE HILL. OVER-HEATING REDUCED BY CLIMBING ON INDIRECT GEARS. Y-AXIS: TEMPERATURE RADIATOR C° X-AXIS: DISTANCE CLIMBED MILES. Graph A: CONSTANT ROAD SPEED FAN SPEED VARIED… | ||
| Scan248 | The heat given to the cooling water of a Hispano engine on a dynamometer. | ||
| View original record | R.R. 493 (40 H) (RL 42 12-7-23). J.H. D. EXPERIMENTAL REPORT. Handwritten: X3456 COPIES TO: R.C.J. BJ. WOR. By. E. Da... RG Expl. No. X3456 REF. Hs/ACL1/LG22, 9.24. OBJECT OF TEST. Heat given to… | ||
| Scan249 | Analysing the thermal efficiency and heat losses of the Hispano engine. | ||
| View original record | R.R. 498A (Roll) (D.A. 612 20-9-24) J.H.D. EXPERIMENTAL REPORT. Exptl. No. REF:Hs/ACL/LG22.9.24. THERMAL EFFICIENCY AND HEAT LOSSES OF HISPANO ENGINE. The following is an analysis of the heat losses… | ||
| Scan250 | Energy diagram for a Hispano engine. | ||
| View original record | ENERGY DIAGRAM FOR HISPANO. CAL VALUE OF FUEL TAKEN AS 19000 BThUs/lb AS FOR PREVIOUS DIAGMS. SG. PETROL .765. % OF INITIAL HEAT ENERGY. R.P.M. LOSSES TO:- JACKET WATER. EXHAUST, PUMPING, RADIATION.… | ||
| Scan251 | Advantages and trial results of steam engine cooling systems. | ||
| View original record | To PN. from Hs. c. to BJ. Handwritten: X3456 Hs2/LG30.9.24. SUGGESTIONS ON ENGINE COOLING. Handwritten: Y766 Handwritten: X3456 With reference to FN10/DN29.9.24. We are aware of the cooling methods… | ||
| Scan252 | Engine cooling systems, including overheating issues, condenser tanks, and pressurized systems. | ||
| View original record | contd :- -2- As an immediate difficulty is over-heating - this scheme would not help us very much. It is interesting to note that although this method of cooling has been known for years and has been… | ||
| Scan253 | Test report on a sealed, pressurized radiator system to prevent water from boiling above 100°C. | ||
| View original record | Extract from Hsl/LG14.9.23 :- Test 1. It was definitely proved that by increasing the pressure on the water in the radiator above atmospheric, the engine could be run with the radiator water above… | ||
| Scan254 | Test results for engine cooling performance, with tables for boiling points at different pressures and temperatures at various speeds. | ||
| View original record | contd :- -2- determined by the venturi meter, remaining normal up to the increased boiling point. Afterwards a reduction in flow occurred, similar to that experienced without the pressure system. The… | ||
| Scan255 | Road tests on a 49-GB standard engine measuring radiator water loss during a hill climb. | ||
| View original record | contd :- -3- ROAD TESTS. Taken on 49-GB - standard engine - 4 to 1 compression ratio - standard fan and radiator. Tests taken on hill - leading from Glossop to Chapel-en-le-Frith. Car speed and load… | ||
| Scan256 | Request to borrow a radiator with 6' deep tubes and a 20' matrix for testing purposes. | ||
| View original record | To Hm. from Hs/Rm. X32456 Hs/Rn1/LG29.10.24. We are anxious to borrow for test purposes - a radiator fitted with tubes 6" in depth, the matrix height being 20". We should like to know whether you… | ||
| Scan257 | The effect of thermostat removal on 40/50 HP engine overheating. | ||
| View original record | R.R. 405A (50M) (D.A. 652 20-5-24) J.B.D. X32456 X.766 Expl. No. X.3456 REF: Hs5/LG21.11.24. EXPERIMENTAL REPORT. To B.J. from Hs. c. to SY. c. to Eg. 40/50 HP. OVERHEATING. With reference to… | ||
| Scan258 | Methods for comparing radiator cooling efficiencies. | ||
| View original record | R.R. 493a (SOH) (D.A. 652 20-3-24) J.H.D. EXPERIMENTAL REPORT. Expl. No. REF:Hs/Rm/LG25.11.24. RADIATOR COMPARISONS. The fundamental difficulties which have hitherto mitigated against satisfactory… | ||
| Scan259 | Radiator cooling performance, analyzing efficiency based on Newton's Laws of Cooling. | ||
| View original record | R.R. 493A (20H) (D.A. 652 20-8-24) J.H.D. -2- EXPERIMENTAL REPORT. Expl. No. REFic/Rm/LG25.11.24. circulation in this way being maintained normally by the pump. Top and bottom water temperatures and… | ||
| Scan260 | Method for testing radiator performance by simulating hill climbing on a level road. | ||
| View original record | -3- EXPERIMENTAL REPORT. Expl. No. REF: Hs/Rm/LG25.11.24. To obtain δt for any radiator the car was driven at full throttle towing a second car in a low gear, the object of this being to keep the road… | ||
| Scan261 | Summarizing radiator test results concerning matrix heights, ventilation, and shutter effectiveness. | ||
| View original record | R.R. 493a (20H) (D.A. 652 20-5-24) J.H.D. -4- Expl. No. REF Hs/Rm/LG25.11.24. EXPERIMENTAL REPORT. The critical atmoshperic temperature therefore is 95°C - St SUMMARY OF RADIATOR RESULTS. Improvements… | ||
| Scan262 | The 40/50 HP cooling system's performance, fan dependency, and radiator modifications. | ||
| View original record | R.R. 462A (HOH) (D.A. 652 20-5-24) J.H.D. -5- EXPERIMENTAL REPORT. Expl. No. REF: Hg/Rm/LG25.11.24. 40/50 is enormously dependent upon its Fan. When the RR. fan is removed, the efficiency of the… | ||
| Scan263 | Comparing the engine cooling performance of the Hispano and 40/50 HP models at 20 M.P.H. | ||
| View original record | R.R. 455a (ROH) (D.A. 562 20-5-24) z.s.d. EXPERIMENTAL REPORT. Expl. No. REF Hs/Rm/LG25.11.24. HISPANO AND 40/50 HP. R-R COOLING 20 M.P.H. The 40/50 HP. is not so well cooled as the hispano at 30… | ||
| Scan264 | Comparing the heat dissipation of Hispano and 40/50 type radiator matrices. | ||
| View original record | R.R. 462a (20M) (D.A. 653 20-5-24) J.B.D. EXPERIMENTAL REPORT. Expl. No. REF: Hs/Rm/LG25.11.24. COMPARATIVE MERITS OF HISPANO AND 40/50 TYPE MATRICES. We have proved that the 40/50 fan does more than… | ||
| Scan265 | With recommendations to reduce vehicle over-heating. | ||
| View original record | R.R. 403A (Soft) (D.A. 652 20-8-24) J.H.D. EXPERIMENTAL REPORT. Expl. No. REF. Hs/Rm/LG25.11.24. RECOMMENDATIONS TO REDUCE OVER-HEATING. Increase matrix height. The increase of matrix height to 22¾"… | ||
| Scan266 | Data table showing the value of increasing matrix height and reducing depth for cooling systems at 30 m.p.h. | ||
| View original record | SHEET 1. VALUE OF INCREASING MATRIX HEIGHT ALSO REDUCING DEPTH. No ventilation. Matrix details. | St | % difference from 'A'. | Critical atmospheric temperature. --- | --- | --- | --- STANDARD. Matrix… | ||
| Scan267 | Table evaluating the performance of different ventilation configurations for a 20 HP Matrix at various speeds. | ||
| View original record | SHEET 2. VALUE OF VARIOUS TYPES OF VENTILATION 20 H.P. MATRIX | 30 M.P.H. BONNET DETAILS. | St | % difference from 'A'. | Critical atmospheric temperature. | |---|---|---|---| | Standard - shutters… | ||
| Scan268 | Comparative analysis of the cooling performance of Hispano and 40/50 HP fans and cooling systems. | ||
| View original record | SHEET 3. RELATIVE VALUE OF HISPANO AND 40/50 FANS. 30 M.P.H. CAR DETAILS. | δt | % difference from 'Ad. | Critical ats. temperature. 40/50 HP. 20¾" matrix. Louvres. | 70.5°C | 'A' | 24.5°C Ditto - no… | ||
| Scan269 | Performance data for a 40/50 HP engine cooling system, showing the effects of speed, ventilation, and fuel mixture. | ||
| View original record | SHEET 4. INCREASE IN EFFICIENCY OF 40/50 HP COOLING SYSTEM WITH SPEED. 20¼" matrix. Road speed. | δt | % difference from 'A'. | Critical atmospheric temperature. 20 M.P.H. - all closed. | 82.2°C | 'A'… | ||
| Scan270 | Bar chart comparing the atmospheric temperature at which a car will boil under various cooling configurations and conditions. | ||
| View original record | COMPARISON OF VARIOUS CAR CONDITIONS ATMOSPHERIC TEMP. AT WHICH THE CAR WILL INEVITABLY BOIL IF DRIVEN FOR SUFFICIENTLY LONG ON FULL THROTTLE AT THE SPEED AND UNDER THE CONDITIONS MENTIONED. SECTION… | ||
| Scan271 | Investigations into vehicle cooling systems. | ||
| View original record | R.R. 493 (40 H) (8L 42 12-7-23). J.H. D. X3456 EXPERIMENTAL REPORT. COPIES TO: R.C.J. BJ. WOR. By. E. Da. EP. PN. OY. Expl. No. X.766 X.3456 X.6250 X.4214 REF. Hs7/LG28.11.24. OBJECT OF TEST. COOLING… | ||
| Scan272 | Continuation page of an experimental report discussing engine overheating at low speeds. | ||
| View original record | R.B. 403A (ROH) (D.A. 652 20-3-24) J.R.D. -2- EXPERIMENTAL REPORT. Expl. No. REF Hs7/LG28.11.24. Summary of test - contd :- over-heating at low speeds can be improved by ensuring that the fan is… | ||
| Scan273 | Design limitations and trade-offs of the engine cooling system for a large D-headed engine. | ||
| View original record | Y3456 To Hs. from R. c. to CJ. BJ. c. to E. BY. RL/M13.12.24. ENGINE COOLING. 40/50. X.766 X.3456 X.8850 For this large D. headed engine the front face of the radiator is short of area. The design of… | ||
| Scan274 | Improvements for engine cooling on the 40/50 model, specifically regarding fans and bonnet design. | ||
| View original record | To HS. and EFC. c. to CJ. BJ. c. to RG. E. c. to DA. X3456 R2/M31.12.24. 40/50 WATER BOILING. X.766 X.3456 X.1017 EFC. has found a fan which promises to be better than our standard - i.e. with a… | ||
| Scan275 | The scrapped tapered 40/50 radiator and the unsatisfactory results of previous mock-ups. | ||
| View original record | X3456. filing To Sg. from Hs/Rn. c. to Ba. Hs/Rn.3/MJ.27.8.29. BONNETS AND RADIATORS. ----------------------- With reference to Sgl/E.23.8.29 and your other note on Bonnets and Radiators. We find that… | ||