Rolls-Royce Archives
| Identifier | Entry | ||
| Scan001 | Blueprints for a 1100 lb rear road spring sample test. | ||
| View original record | R.R. 335N (100 bks 100 in 6-12-20) G. 2928 To RY from DA. MAR 18 1921 c. to IB. G. to HS. S. to DRC (1 print). RECEIVED 17 MAR 1921 X.2628 DA8/CB15-3-21. REAR ROAD SPRINGS. ------------------ Please… | ||
| Scan002 | Side movement and twisting of rear spring leaves without nibs and slots on a test chassis. | ||
| View original record | BY. from EP. c. to Da. c. to Hs. c. to E. X.2628B EP7/F16.3.21. X.4056 CHASSIS - REAR SPRINGS - NO NIBS AND SLOTS. X.2628B X.1333 As pointed out to you this morning, we find that after running the… | ||
| Scan003 | Addition of clips to pre-war rear road springs to counteract torsion and translation forces. | ||
| View original record | X 2628B BY. from Da. c. to Hs. Da18/CB16.3.21. X.3950 RE REAR ROAD SPRINGS WITH PARABOLIC LEAF ENDS. X.4056 X.2628B With reference to the rear road springs of the pre-war type, especially those with… | ||
| Scan004 | The modification of chassis springs by adding an extra pair of clips. | ||
| View original record | X 2628 R.R. 135a (100 T) (S.H. 798. 10-12-20) G. 8948 BY/Mtn2/H. 19. 3. 21. Hs MAR 19 1921 [STAMP: REC'D] M. c. Da. c. Hs. CHASSIS - RE SPRINGS. x2628 Referring to your EP7/F. 16. 3. 21. we have… | ||
| Scan005 | Issues with front springs on cars, including loose clips and shearing bolts. | ||
| View original record | X2628 Ar A.T. By. from EP. b. to Ba. c. to Hs. d. to E. EP17/F31.3.21. X2628 RE. FIXING OF FRONT SPRINGS TO FRONT AXLE. --------------------------------------- With reference to my recent complaint… | ||
| Scan006 | Fixing front springs to the front axle, identifying loose spring clips as the cause for broken bolts. | ||
| View original record | x2628 EP. from BY. C. Da. C. Hs. EY9-P1.4.21. x2628? FIXING OF FRONT SPRINGS TO FRONT AXLE. --------------------------------- Referring to EP17/F31321, the trouble is unquestionably due to the spring… | ||
| Scan007 | Use of cast hardened mild steel versus nickel steel for wearing plates on rear springs. | ||
| View original record | /2628 To OY. from Hs. c. to Mr. Manning. Hs2/LG4.4.21. WEARING PLATES ON REAR SPRINGS. I have just received your cable asking whether the wearing plates on the rear springs can be made of cast… | ||
| Scan008 | Complaint about loose front spring clips and breakage of centre bolts on new cars. | ||
| View original record | X2628 Hs Ex. from EP. C. to Hs. Ex to By. C. to F. X2628 X1333 X1344 RE. LOOSE FRONT SPRING CLIPS AND BREAKAGE OF CENTRE BOLTS ON FRONT SPRINGS ON NEW CARS. With reference to the above complaints… | ||
| Scan009 | Page discussing the final testing and inspection of work at coachbuilders. | ||
| View original record | -2- Coachbuilders, as long as we are able to finally test and inspect them at the Coachbuilders. EP. R.R. 255A 5m(T.&S.) H.W.& V.(Ld.) 10-2-31 G. 268 | ||
| Scan010 | Noise complaints due to excessive end play in front spring shackles. | ||
| View original record | X. 2628 BY. from EP. c. to Da. c. to Hs. c. to E. EP9/H6.4.21. X.433 RE END PLAY IN FRONT SPRING SHACKLES X.2628 We still continue to receive complaints of noise taking place in the above, even… | ||
| Scan011 | Issues and performance of thick versus thin leaved springs for cars in the American market. | ||
| View original record | To CJ. from R. c. to Wor. c. to HS. c. to EP. c. to BY. X 2678 R1/G7.4.21. X.2628. RE THICK LEAVED SPRINGS FOR CARS IN AMERICA. (CJ/JSB/D11.2.21) A good deal of the trouble with thick leaved springs… | ||
| Scan012 | Reconstructing a carriage, salvaging the top plate, and scrapping the remaining leaves for their valuable steel. | ||
| View original record | contd. -2- R1/G7.4.21. ---------------- the carriage home, even if they had to be reconstructed, by using the thick top plate only, and most of the other leaves scrapped, but valuable scrap, as we… | ||
| Scan013 | Agreeing with a suggestion to use hardened washers to reduce wear on front springs or shackles. | ||
| View original record | X.2628 To BY. from R. c. to CJ. c. to Hs. F11/G10.5.21. X.2628 X.433 RE FRONT SPRINGS. I quite agree with your suggestion of putting in hardened washers to see if they will reduce the wear on the… | ||
| Scan014 | Lubrication issues with rear spring shackles and proposing improvements. | ||
| View original record | X2628 2 By.From Mr. C. Hs. C. E. Dr. C. E. EP13/F10.5.21. X.2628 X3898 X433 SPRING SHACKLE LUBRICATION. I again wish to bring forward for consideration the necessity of some improved method of… | ||
| Scan015 | The importance of better lubricators and lubrication schemes for shackles, and the method for initial oiling. | ||
| View original record | -2- comes into any of our Repair Departments or Depots for overhaul or repair, or on such occasions as these springs have to be disturbed for any purpose whatever. We also wish to press forward the… | ||
| Scan016 | Extract discussing causes and solutions for transmission knocking, particularly in relation to U.S.A. complaints. | ||
| View original record | K2628 Extract from R10/G8.6.21. X.3614 - RE U.S.A. COMPLAINTS. X.1511 X.2628. KNOCKING IN TRANSMISSION. X.1494. As is well known, there are two causes of the knocking in the transmission; one is the… | ||
| Scan017 | Page discussing the causes of knock in the transmission, specifically uneven engine firing, and proposing solutions. | ||
| View original record | R.R. 235a (100 T) (S.H. 798, 11-12-20) G. 2048 Contd. -2- R10/G8.6.21. We think all future cars should be fitted with one of these devices. The other cause of knock in the transmission is due to the… | ||
| Scan018 | Modifications to rear springs, including changing the front-end mounting and fitting black-lead bushings. | ||
| View original record | x2628 To BY. From R. c. to CJ. c. to Wor. c. to Hs. c. to Da. R1/G22.6.21. X.4386 X.2628 RE REAR SPRINGS. I hope they have not failed to inform you of the modifications which are likely to take place… | ||
| Scan019 | The modification of rear road spring bearings to use 'Alemite' grease lubricators. | ||
| View original record | R.R. 223a (50 T) (S H. 926. 19-5-21) G 2048 X2628 [Circular Stamp: RECEIVED] To BY from DA/STT. Copy to HS. " " TB (1 print). " " RHC (1 print). X2678 X4337 DA/STT1/CB5-7-21. RE REAR ROAD SPRING… | ||
| Scan020 | The company's policy on thick versus thin leaf springs and customer pricing. | ||
| View original record | Hs. X2628 To Works from CJ. COPIES TO WORKS COMMITTEE. W.O.s 4/8/21 Springs. CJ12/E25/7/21. Please note and inform those concerned in your Department that in future we should not talk to customers of… | ||
| Scan021 | Test report on a front bumper chassis, logging running hours and component failures. | ||
| View original record | W/S X2628 REPORT ON BUMPER CHASSIS - FRONT. Special fittings fitted. Radiator - Monel metal plates and copper tubes. Rocker shaft on steering X.3920 F.8956 D. type. Support bracket E.20246 X.4373. New… | ||
| Scan022 | Log sheet detailing component failures and observations during a vehicle test run. | ||
| View original record | -2- Date. | Total hrs. run. | Remarks. 10.8.21 | | Standard N.S. springs fitted. 11.8.21 | 70 hrs. 10 mins. | Centre bolt broken N.S. Spring. | 73 " 35 " | O.K. 12.8.21 | 80 " 31 " | Front shock… | ||
| Scan023 | The durability testing of American-manufactured front springs against standard Woodhead springs for the 4.EX car. | ||
| View original record | To R. from Hs. c. to CJ. c. to E. c. to Da. c. to BY. c. to EWT. for R.R. Inc. X.2628 Hs1/LG10.8.21. X.2628 X.3764 PARTS FITTED TO 4.EX CAR IN U.S.A. X3900 The front springs fitted to 4.EX Car were of… | ||
| Scan024 | Complaints about squeaking rear springs. | ||
| View original record | X2628 R.H. Sales (40 T) (S H. 986, 19-2-21) G 3609 Hs. C. to By. FR EP/Thn12/H10.8.21. Re Squeaking of Rear Springs. We attach hereto copy of memo we have received from Br. on which we shall be glad… | ||
| Scan025 | Permanent fix for squeaking thick leaf springs by filing the leaf edges. | ||
| View original record | R.R. 28M-60 T; (S H. 986, 19-2-21) G. 3009 N/W. EP. C O P Y. Br3/H9.8.21. Re Spring Squeaks. -------- We are still getting a number of cars in fitted with thick leaf springs in which the customers… | ||
| Scan026 | Inspection for chassis 46-RE and an update on its leaf springs. | ||
| View original record | X. 2628 BJ. c. to PN. c. to H. c. to Hs. EP/Thn1/H18.8.21. Re. Chassis 46-RE Mr. F.T.Fisher. X. 2526 X. 2628 With reference to your memo. Py6/DG12.8.21, we attach herewith copy of our reply to Mr.… | ||
| Scan027 | Request to alter the springs on a pre-war car, chassis 5-RD, to match those of a post-war car, 95AG. | ||
| View original record | To R. from Hm c. to CJ. c. to BJ. c. to Wor. c. to EP. c. to Hs. c. to C. c. to H. X. 2628 Hm4/W18.6.21. X. 2565 CHASSIS NO.5-RD. F.N. KIDD ESQ. X. 2628 This owner has requested us through N. to alter… | ||
| Scan028 | Follow-up memo requesting a reply to a suggestion about squeaking rear springs. | ||
| View original record | R.R. 25M (40 T) (S.H. 986, 19-2-21) G. 2009 X2628 F.R. EP/Thn14/H26.8.21. Hs. from EP. C.C. to BY. X2628 Re SQUEAKING REAR SPRINGS. With reference to our memo EP/Thn12/H10.8.21, Cricklewood are… | ||
| Scan029 | Suspension upgrades due to cord tyres and addressing complaints about axle and gearbox noise on Rudyard Kipling's car. | ||
| View original record | To CJ. from R c. to BJ. c. to HS. c. to EP. X2628 R2/C31.8.21. RE 6-UE - RUDYARD KIPLING. X.2565 (CJ6/D30.8.21. X.2628. You will remember that for a very long time I have recommended for the rear of… | ||
| Scan030 | Continued memo discussing the need to resolve a chassis issue to maintain standards and avoid customer annoyance. | ||
| View original record | Contd. -2- R2/G31.8.21. Who can say definitely what is the matter to bring the chassis up to our usual standard, rather than run the risk of annoying the customer with the various opinions of various… | ||
| Scan031 | The development and testing of experimental road springs for the Goshawk 11 engine project. | ||
| View original record | X2628 To R. From Da. c.c. to Wor. c.c. to Hs. c.c. to E. Dal/G12.9.21. X.4261. X.4262 RE GOSHAWK 11. ROAD SPRINGS. X.2628 I have now looked into the records of the work these springs, and should very… | ||
| Scan032 | Timeline of events concerning the ordering and testing of experimental springs and a subsequent dispute. | ||
| View original record | Contd. -2- Dal/G12.9.21. In fact it was shewn that had the springs been exactly to drawing they would almost certainly have given their exact load. When Mr. Stott reported this to me, and said that… | ||
| Scan033 | Delays and calculations for ordering experimental and production springs. | ||
| View original record | contd: -3- Dal/12.9.21. between 22nd. August and the 9th. Sept. about which I was in ignorance, there has not been much delay, as it would not have been wise to order a large number of springs until… | ||
| Scan034 | Permanent cure for squeaking thick leaf springs by rounding off the ends of the leaves. | ||
| View original record | To BR. from R. c. to CJ. c. to Wor. c. to Hs. c. to EP. c. to Da. X2628 R5/G13.9.21. X.2628 - RE SQUEAKING OF THICK LEAF SPRINGS. X.3745 I am very pleased to hear that you have discovered that by… | ||
| Scan035 | Experiments on rounding the surfaces of thick leaf springs to cure squeaking. | ||
| View original record | Hs. from EP. X2628 F.R. EP/Thn124/H19.9.21 Re Squeaking of Thick Leaf Springs. With reference to R's memo reference R5/G13.9.21, we trust you will push through your experiemnts on the rounding off of… | ||
| Scan036 | Reporting on the superior test results of American-supplied front springs over Woodhead Springs. | ||
| View original record | To R. from Hs. c. to CJ. c. to E. c. to Da. c. to EY. c. to EWT.for R.R.Inc. X2628 Hs3/LG20.9.21. X.3900 X.2628. FRONT SPRINGS SUPPLIED FROM U.S.A. In our memo. Hs1/LG10.8.21 we reported that we had… | ||
| Scan037 | Laboratory analysis of 'Very good American Spring No. 2', detailing its chemical composition and Brinell hardness. | ||
| View original record | Hs. Laboratory. H12/GLT/7.9.21. Re. Very good American Spring No. 2. Analysis:- Carbon. 0.44% Manganese. 0.72% Nickel. Nil. Chromium. Nil. Silicon. 1.83% Sulphur. 0.030% Phosphorus. 0.018% The brinell… | ||
| Scan038 | Letter detailing a successful cure for squeaking thick leaf springs. | ||
| View original record | Hs. from Dr. e:-to-E:J:- e:-to-R:- X2628 Br1/H.30.9.21. re Squeaking of Thick Leaf Springs. X2628 X.3745 I have this morning received a copy of Hs2/LG.28.9.21, concerning the above. I am interested to… | ||
| Scan039 | Complaints about thick leaf springs and the proposed solution of using thinner, stiffer, unlubricated springs to improve ride steadiness. | ||
| View original record | To BJ. from R. c. to CJ. c. to Wor. c. to Hs. c. to Wd. c. to BY. X2628 RS/G3.10.21. X. 2628 - RE SPRINGS. I understand that we are continually receiving complaints of the cars fitted with thick leaf… | ||
| Scan040 | Supply and pricing of road springs from Firths' new plant in comparison to American prices. | ||
| View original record | contd:- -2- R3/G3.10.21. purchased at in America. I should also be pleased to know when we may hope to receive road springs from Messrs. Firths' new plant. These people may be more reasonable, and… | ||
| Scan041 | Tests to cure squeaking in thick leaf springs by forming a radius on the leaf edges. | ||
| View original record | To R. from Hs. c. c. to CJ. c. c. to E. c. c. to Da. c. c. to BY. c. c. to EP. c. c. to Wor. c. c. to Br. X2628 Hs2/LG28.9.21. SQUEAKING OF THICK LEAF SPRINGS. We have carried out our test far enough… | ||
| Scan042 | The cost of changing rear springs from a thick leaf to a thin leaf type. | ||
| View original record | X2628 To R. from BJ. Copy to OJ. Wor. Hs. ED MD WD [STAMP] RECEIVED BJ/21/H6.10.21. SPRINGS. K3/G3.10.21. I am not sure if you have received the following information which Mr. Rodman sent to O.J. on… | ||
| Scan043 | Results of tests on squeaking thick leaf springs and the effect of radiusing the edges. | ||
| View original record | To R. from Hs. c.c. to CJ. c.c. to E. c.c. to Da. c.c. to BY. c.c. to EP. X2628 Hs2/LG6.10.21. SQUEAKING OF THICK LEAF SPRINGS. X2628 X3745 The tests we have carried out radiusing the edges of the… | ||
| Scan044 | Customer complaints and preferences regarding thick versus thin leaf springs on 40/50 HP chassis. | ||
| View original record | To R. from Hs. c. to CJ. c. to Wor. c. to Rg. c. to PN. c. to Da. c. to E. c. to BY. c. to HM. c. to EP. c. to EWT. for R.R. Inc. X2628 2 Hs4/LG7.10.21. X.2628 - SPRINGING OF 40/50 H.P. CHASSIS.… | ||
| Scan045 | Vehicle springing, customer complaints regarding ride comfort, and ideal solutions involving friction dampers. | ||
| View original record | Contd. -2- HS4/LG7.10.21. shock absorbers of the single-stage type giving a constant friction of 60 to 65 lbs. We have had other cases of customers complaining of the springing which we have been able… | ||
| Scan046 | The challenges and complaints related to fitting shock absorbers and a recommendation for using thin leaf springs. | ||
| View original record | contd:- -3- Hs4/LG7.10.21. customers hands. Whenever we have fitted the present R-R shock absorbers it has always been necessery to alter the mudguards stays, luggage grid brackets and cut away the… | ||
| Scan047 | Report discussing complaints about leaf spring friction and potential solutions for vehicle suspension. | ||
| View original record | contd:- -4- Hs4/LG7.10.21. ------------ get them rusted up solid and are going to get complaints of excess of friction. If we fit thin leaf springs, and gaiters are fitted to lubricate them, we might… | ||
| Scan048 | Springing and shock damper design for the 40/50 HP model. | ||
| View original record | To Hs. from R. c. to CJ. c. to Wor. c. to Da. c. to BY. X2628 R10/G18.10.21. X.2628 - 40/50 H.P. SPRINGING. X3461 Regarding the springing of the 40/50 H.P. though I agree with much of what you say in… | ||
| Scan049 | Continued discussion regarding the lubrication of shock dampers and connections. | ||
| View original record | contd:- -2- well up to the present, in spite of the fact that we do not seem to get the grease into them. We ought to arrange that the grease can be forced right through to the back quite easily, and… | ||
| Scan050 | Potential purchase of Hartford Shock Absorbers to address complaints about thick leaf springs. | ||
| View original record | To R. from Hs. c. to CJ. c. to E. Da. BY. EP. X2628 HsS/LGS1.10.21. X.4389 X.4426 X2628 SHOCK ABSORBERS. In order to overcome the complaints caused by the absence of friction in thick leaf springs, we… | ||
| Scan051 | Quote for Hartford shock absorbers as an alternative for the Goshawk. | ||
| View original record | contd:- -2- have been quoted for a pair of these shock absorbers is £6. We suggest that we should consider these shock absorbers as an alternative on the Goshawk. Attached to Mr. Royce's copy of this… | ||
| Scan052 | Letter from Madrid regarding client complaints about engine overheating and suspension issues. | ||
| View original record | X2628 Copy. Madrid. November 5th. 1921. SaAo/Al/15. To C.J. (London) from Sa. My dear C.J., I have heard many complaints lately from clients that their engine gets too hot, the water boiling when… | ||
| Scan053 | Implementation and challenges of fitting shock dampers to post-war cars. | ||
| View original record | To CJ. from R. c. to CJ. c. to PN c. to LHS. c. to Wor. c. to EP. c. to HS. X2628 R7/G23.11.21. X.3461 - RE SHOCK DAMPERS - CJ3/E17.11.21. X.2628 I am in receipt of your memo of the 17th. I do not… | ||
| Scan054 | Shock damper performance, future policy, and competing engineering priorities such as engines and armoured cars. | ||
| View original record | contd:- -2- and it is thought by myself and others that for an open high speed car and as fitted to 6.EX I am driving, they are distinctly good, much better than the average. This is so, because on… | ||
| Scan055 | Continued memo about increasing the wearing surface of a fitting via lubrication with 'Enot' greasing equipment. | ||
| View original record | R.R. 235w/100 T/S.H. 195. 10-12-20. G. 2048 contd. -3- can increase the area of the wearing surface of this fitting. Largely, however, it is a question of lubrication, which will be greatly met by the… | ||
| Scan056 | Squeaks from spring shackles due to lack of lubrication and suggesting a design modification. | ||
| View original record | X2628 Copy to DY. } from Wor. " " HS. } " " FHH. } N-W. Wor. X2628 Technical - re Spring Shackles. Br1/H23.11.21. [STAMP: RECEIVED HS NOV 24 1921] We are getting a number of cars in with squeaks,… | ||
| Scan057 | The lubrication of spring shackles and squeaking springs, referencing a solution implemented on a car belonging to Rudyard Kipling. | ||
| View original record | By. from EP. c. to Hs. c. to Hm. c. to Wor. c. to Br. Re Lubrication of Spring Shackles. -------------------------------- With reference to Brl/H23.11.21 on this matter, we can confirm Br's… | ||
| Scan058 | The policy and technical merits of fitting thin leaf springs versus Hartford shock dampers to a chassis. | ||
| View original record | X2628 To BJ. from R. c. to CJ. c. to EP. c. to HS. c. to BY. c. to CY. c. to Wor. RE. THIN LEAF SPRINGS OR SHOCK DAMPERS. X.3461. X.4426. X.2628 I do not consider it would be good policy to open out… | ||
| Scan059 | Crankcase fumes, sea-sickness, and suspension design including springs and shock-dampers. | ||
| View original record | To B.J. from R. c. to CJ. FN. c. to hs. EP. c. to SY. Wor. c. to LHS. X2628 R2/M20.12.21. SEA-SICKNESS. X.3908 X.3461 X.2628 BJ5/H19.12.21. FUMES. X.3908 The best solution for crankchamber fumes… | ||
| Scan060 | Page detailing an escalation procedure for unsatisfactory explanations. | ||
| View original record | contd. -2- R2/M20.12.21. ------------- If you cannot get a satisfactory explanation from EP., he should consult with Hs. If still unsatisfactory, it should then be brought to me. R. | ||
| Scan061 | Composition, design, and performance of road springs. | ||
| View original record | To Hs. from R. c. to CJ. c. to Hl. c. to Ba. c. to BY. c. to Wor. c. to E. X2628 R3/M30.12.21. RE. ROAD SPRINGS. X. 2628 I am trusting to Mr. Hall to watch carefully the composition and physical… | ||
| Scan062 | Increasing stock of thick leaf rear springs for the 40/50 HP Chassis and proposing a policy review. | ||
| View original record | X2628 R. from Md. c. to CJ. c. to BJ. c. to C. c. to Hr. c. to Hs. c. to Hy. c. to Lm. c. to Wde. c. to Wr. c. to Hv RECEIVED 3 JAN 1922 40/50 HP. Chassis - Rear Springs. Our stock of thick leaf rear… | ||
| Scan063 | Letter from Paris discussing two new articles: a front spring shackle and a variable speed fan. | ||
| View original record | X2628 125, AVENUE MALAKOFF PARIS XVIe TELEPHONE: PASSY { 33-79, 39-01, 39-10 January 31st 1922 Wa.7/Go Dear Ern, X2628 X3438 X1509 I have two interesting articles on which I should like an opinion but… | ||
| Scan064 | Letter discussing adjustable spring shackles, a variable speed fan, shutters, and an automatic steam carburettor. | ||
| View original record | X2628 P/Hivès Wa.7/Co.8.2.22 3 extracts Dear Ern, I am much obliged for your letter of Feb. 2nd and note that you consider there is something in the adjustable spring shackles. I have had a pair made… | ||
| Scan065 | Rear spring issues and the recommendation to fit Hartford pattern double-acting shock dampers. | ||
| View original record | X2628 To RR. of America Inc. from R. For the attention of - Mr. Belnap. Mr. Olley. Mr. Wadin. c. to CJ. BJ. c. to FN. HE. c. to BY. EP. c. to Hm. R2/110.2.22. RE. REAR SPRINGS. X.2628 X.3538 X.3461.… | ||
| Scan066 | Fitting of shock dampers and flexible springs for optimal damping effect. | ||
| View original record | contd:- -2- that the maximum damping effect be obtained from the front shock ampers and that the rear of the car should be fitted with the Hartford pattern as described above. You will notice that… | ||
| Scan067 | Letter regarding the forwarding of patent spring shackles for evaluation and potential adoption. | ||
| View original record | X2628 Shipping 125, AVENUE MALAKOFF PARIS XVIe TÉLÉPHONE: PASSY { 33-79, 39-01, 39-10 February 14th 1922 Dear Hives, I have forwarded the patent spring shackles to you by Holmes driver to Brigadier… | ||
| Scan068 | Solution for squeaks from thick leaf springs by modifying the leaf tips. | ||
| View original record | Hs. from EP. c. to BY. c. to E. K2618 RECEIVED 14 MAR 1922 EP12/H14.3.22. Re. SQUEAKS FROM THICK LEAF SPRINGS. This is a trouble we still have to contend with, and Br. informs us that he has achieved… | ||
| Scan069 | Manufacturing difficulties and design considerations for front springs. | ||
| View original record | X2628 To BY. from Da. c.c. to CJ. c.c. to Wor. c.c. to Hs. Da2/10.5.22. RE FRONT SPRINGS. X.4261. X2628 Thank you for your telegram of yesterday. We are sorry to hear that you experience difficulty in… | ||
| Scan070 | Ongoing customer complaints about squeaks from thick leaf springs and engine vibration. | ||
| View original record | X2628 Hs. from EP. C. to BY. EP/Thn6/Hl9.5.22. RECEIVED Re. SQUEAKS FROM THICK LEAF SPRINGS AND ENGINE VIBRATION. I shall be glad if you will please refer to my memo EP12/Hl4.3.22, and let me know if… | ||
| Scan071 | Value of thick leaf rear springs and the suitability of thin leaf springs for the 40/50-HP Chassis. | ||
| View original record | X2628 To Hs. from BJ. BJ7/H24.5.22. 40/50-H.P. Chassis. Re squeaking of Thick Leaf Rear Springs. With reference to Hs7/LG19.5.22, before giving a decision, we should be obliged if you would inform us… | ||
| Scan072 | Value, stock, and performance of thick and thin leaf rear springs for the 40/50 chassis. | ||
| View original record | Y2628 BJ. from Hs. HS9/LG25.5.22. 40/50 CHASSIS - RE SQUEAKING OF THICK LEAF REAR SPRINGS. Y2628 Referring to your memo. BJ7/E24.5.22. Item 1. We have obtained from Wd. the following particulars as… | ||
| Scan073 | Scrapping thick leaf rear and front springs for the 40/50 HP chassis. | ||
| View original record | Y2628 To Hs. from BJ. BJ1/H26.5.22. 40/50 HP. Chassis. Re Squeaking of Thick Leaf Rear Springs. Thank you for Hs9/LG25.5.22. 1. Do you suggest scrapping rear and front thick leaf springs? Are there no… | ||
| Scan074 | Instruction to immediately cease using and scrap the existing stock of thick leaf springs. | ||
| View original record | Mr. Booth. c. Hs. [STAMP: MAY 31 1922 REC'D] x2628 BY5/H. 30. 5. 22. ------------------- RE SPRINGS. ----------- Kindly note that BJ. in his memo BJ10/H.30.5.22. copy of which we attach, is in… | ||
| Scan075 | The decision to cease fitting thick leaf springs to chassis and what to do with the excess stock. | ||
| View original record | To Hs. from BJ.10 [STAMP: REC'D MAY 30 1922] EU10/H30.5.22. SPRINGS. At a conference yesterday with R. and C.J. it was decided that we should fit no more thick leaf springs to chassis the loss would… | ||
| Scan076 | Correcting a pricing error for 40/50 chassis thick leaf springs. | ||
| View original record | To BJ. from Hs. K0628 Hs3/T30.5.22. RE 40/50 CHASSIS - THICK LEAF SPRINGS. With reference to your memo BJ10/H30.5.22, we assume the figure given, £11,073, is an error and should read £1173, which is… | ||
| Scan077 | The performance and testing of patent spring shackles. | ||
| View original record | V2628 P/Hs. Wa.6/Go.29.6.22 re: Patent spring shackles You will remember I sent you a set of patent spring shackles for front springs. Have you been able to test them ? I have lately been out on the… | ||
| Scan078 | Merits of thin versus thick leaf road springs and recommending rounding the edges. | ||
| View original record | To PN. ) from A. To Hs. ) To EP. ) c. to BY. Da. c. to E. Wor. Roy. X. 2628. R4/M10.7.22. 40/50 - RE ROAD SPRINGS. X. 2628. I understand that you have an impression that the thick leaf springs with… | ||
| Scan079 | Request to investigate the harshness and vibration of the front of the 40/50 model. | ||
| View original record | To Hs. from R. c. to CJ. & BJ. X2628 R./M22.7.22. X. 3461 X. 634 X. 2628. The harshness and vibration of the front of the 40/50 may be influenced by the condition of the front springs and shock… | ||
| Scan080 | Confirming arrangements for testing different axle springs on 40/50 HP and Goshawk models. | ||
| View original record | Hs. from Roy. c. to HY. X. 2628 Roy6/FJ26.7.22. X.4261. X. 2628. Following our conversation, I would confirm the arrangements made that you will let us know the poundages of a set of 40/50 HP. axle… | ||
| Scan081 | Replacing thick leaf rear springs with thin leaf springs and Hartford shock dampers. | ||
| View original record | To Py. from R. c. to Wor. c. to BY. c. to Ha. c. to PN. c. to EP. c. to Br. c. to H. X2628 PS/M10. 8.22. RE. THICK LEAF REAR SPRINGS. X. 2628. X. 4261. X. 4426. Never fit these to new cars. Always… | ||
| Scan082 | The adoption of thin leaf springs and shock absorbers for American and English production cars. | ||
| View original record | X2628 Extract from R3/M1.9.22. X.3614. Springs and Shock absorbers. X.2628 X.3461. On the American cars thin leaf springs have been adopted without shock absorbers. This would be the same as the… | ||
| Scan083 | Tests for spring shackles and bushes, recommending the use of hardened surfaces over phosphor bronze. | ||
| View original record | Da. from Hs. c. to BY. X2628 Hs2/LG11.9.22. SPRING SHACKLES, BUSHES ETC. X2628 X4261 Our tests have shown that to get the best results from spring shackles and bushes, we should use hardened surfaces… | ||
| Scan084 | Request to manufacture pieces for a small spring testing apparatus, referring to drawing No. LeC.1637. | ||
| View original record | To BY. from E. c. to Hs. X. 2628 E2/M3.10.22. RE. SPRING TESTING APPARATUS X. 2628. We send you herewith drawing No. LeC.1637 shewing some pieces required for a small spring testing apparatus. Could… | ||
| Scan085 | Requesting the manufacture of parts for a spring testing apparatus, referencing drawing No.LeC.1638. | ||
| View original record | TO BY. from E. c. to CJ. Hs. X. 2628 E2/M5.10.22. SPRING TESTING APPARATUS X. 2628. We send you herewith drawing No.LeC.1638 shewing a testing apparatus for large springs. We should be glad if you… | ||
| Scan086 | Adjustment of car springs and shock dampers for models intended for use abroad on rough roads. | ||
| View original record | X2628 To BJ. from R. c.c. to Wor. c.c. to BY. c.c. to Hs. c.c. to EP. R1/M16.10.22. RE. SPRINGS FOR ABROAD X.2628. X346/ Referring to your BJ16/H26.9.22., if my memory is right we generally spring our… | ||
| Scan087 | Modifications to spring clearances and strength for a 40/50 HP chassis intended for export. | ||
| View original record | X2628 H. c. BJ. c. WOR. c. Hs. O. BY10/H. 19.10.22. ------------------- HS RECEIVED OCT 19 1922 40/50. HP. CHASSIS. RE SPRINGS FOR ABROAD. -------------------- Referring to R1/M. 16.10.22. the actual… | ||
| Scan088 | Improvements and stock management for road springs on 40/50 and Goshawk cars. | ||
| View original record | Wor. c. to Wd. c. to BY. c. to Hs. c. to Roy. X.2628. EP3/H.23.10.22. ROAD SPRINGS 40/50 AND GOSHAWK X.4261. X.2628. We have read with interest Wd's memo Wd6/NJ18.10.22. and the papers attached… | ||
| Scan089 | The merits and costs of thick leaf springs versus thin leaf springs and shock absorbers for the 40/50 model. | ||
| View original record | BJ. PN. WOR. BY. HS. EP. CJ. FROM R. X2628 RL/M26.10.22. 40/50 - THICK LEAF SPRINGS X.2628. Referring to BJ17/H20.10.22., this seems to be a question of money. The 238 springs we understand will all… | ||
| Scan090 | Page discussing conclusions on leaf springs, shock dampers, and tyre pressures. | ||
| View original record | Contd: -2- (1) To squeak. (2) Non-damping. (3) Break. From our experience we find these conclusions are founded on fact but this is a matter of degree. Naturally this is what we might have expected,… | ||
| Scan091 | 5% increase in spring poundage for chassis intended for overseas use. | ||
| View original record | X2628 Mr. Booth. C. Wd. C. Hr. C. Hs. ROADS SPRINGS FOR ABROAD. X2628 -------------------------- With reference to our present standard methods of springing chassis, in view of certain correspondence… | ||
| Scan092 | Recommending the use of hardened steel washers to reduce noise from spring shackles and front horns. | ||
| View original record | X262F To Da. & BY. from R. c. to CJ. BJ. HS. EP. c. to PN. Hm. Br. OY. R2/M6.11.22. RE. SPRING SHACKLES AND FRONT HORNS X.2628 I understand that increased difficulty is being experienced in keeping… | ||
| Scan093 | From Da. to Hs. discussing design considerations for spring shackles, models X.2628 and X.4261. | ||
| View original record | X2628 To Hs. from Da. Da2/M4.12.22. RE. SPRING SHACKLES X.2628. X.4261. We are still not quite sure whether the Expl: Dept: have any definite recommendations to make as regards these shackles. We… | ||
| Scan094 | Performance and wear issues of spring shackles, comparing C.H.N.S. bushes to bronze. | ||
| View original record | X2628 Da. from Hs. Hs6/LG6.12.22. RE. SPRING SHACKLES. X2628 X4261 Da2/M4.12.22. We have had running for some time C.H.N.S. Bushes for springs instead of bronze. So far these are working very well. A… | ||
| Scan095 | Note about changing the material for front and rear spring fittings from Mild Steel to Ubas for the 40/50HP Chassis. | ||
| View original record | X2628 BY/HEB/W.28/12/22. Note [Redacted Distribution List] C. to MR. RECEIVED H8 DEC 28 1922 40/50HP. CHASSIS. FRONT AND REAR SPRINGS & FITTINGS. SEC: 7020 & 7030. As regards the following Parts:-… | ||
| Scan096 | Results from testing Delage springs and correcting the pitch angle on a worm gear. | ||
| View original record | To Hs. from Da. X2628 Da2/M26.1.23. X.3525 X.2628 We meant to have asked you yesterday whether you hadhad any results from weakening the Delage springs, and testing for the effect of shocks. We have… | ||
| Scan097 | From Mr. Royce requesting information and tests on road springs to understand the effects of torsion and side bending. | ||
| View original record | To Hs. from Da. X2628 Da2/M27.1.23. RE. ROAD SPRINGS X.2628. X.4261. Mr. Royce would like some information as to the effect of torsion and side bending in the road springs. We can calculate of course… | ||
| Scan098 | Technical memorandum discussing the correction and bushing of holes in leaf springs to prevent wear. | ||
| View original record | X. 2628 To BY. from R. c. to Ws. c. to CJ. c. to Wor. c. to Hs. c. to EP. R7/M29.1.23. SPRINGS. X.2628. With reference to your BY9/P22.1.23., I certainly think that the holes in the top leaf of the… | ||
| Scan099 | Importance of spring alignment to prevent wear and breakage. | ||
| View original record | contd:- -2- I do not think that slight errors in the horizontal plane are of any importance but certainly those which affect the alignment of the spring parallel to the frame in plan, are of the… | ||
| Scan100 | Standardisation of a light pressed cover for the central bearing of a rear spring. | ||
| View original record | X2628 CJ. and BJ. from Hs. Hs/LG7.3.23. X.2628 - LIGHT PRESSED COVER ON CENTRAL BEARING OF REAR SPRING. We attach copy of standardisation sheet in connection with the above. This design was got out by… | ||
| Scan101 | Complaint from Springfield regarding knocking in the 40/50 Chassis rear spring roller plates and proposing a reduction of the side clearance limit. | ||
| View original record | X2628 c. to Hs. EP6/H9.3.23. re. 40/50 Chassis, Side Clearance in Rear Spring Roller Plates. Springfield complain that if full advantage is taken of the maximum limit .017" that knocking still takes… | ||
| Scan102 | Standardisation of a light pressed cover on the central bearing of the rear spring. | ||
| View original record | R R 765 (5 k) (S H 268, 10-9-20) G 8584 COMPLETED 9.3.23. STANDARDISATION of CHASSIS PARTS. Description of Parts. LIGHT PRESSED COVER ON CENTRAL BEARING OF REAR SPRING. Origin. To prevent oil getting… | ||
| Scan103 | The results of a spring torsion and distortion test. | ||
| View original record | X.2628. To R. from Hs/Rm. c. to CJ. c. to E. c. to Da. c. to BY. Hs/Rml/LG17.3.23. SPRING TORSION AND DISTORTION TEST. X.2628. Graph 1. The spring was held as shown in the sketch, with one end fixed,… | ||
| Scan104 | Data log of a torsion test on a spring, recording torque versus torsion angle. | ||
| View original record | X2628 Weight of Lever = 10 lbs. Weight of Tray = 66 1/4 lbs. Load applied at 1 ft. from centre of Spring. Torque. Torsion Torque Torsion ft. lbs. Degrees & mins. ft. lbs. Degrees & mins. 0 0° 436.5… | ||
| Scan105 | Spring lateral distortion test report, showing load, angle, and height measurements in a table, with a diagram of the spring. | ||
| View original record | X2628 SPRING LATERAL DISTORTION TEST. LOAD | ANGLE. C. | HEIGHT. E. 6 | 89º 25 | 56 | 89º 25 | .001 112 | 89º 15 | .006 168 | 89º 5 | .001 224 | 89º | .009 280 | 88º 50 | .010 336 | 88º 45 | .008 392… | ||
| Scan106 | Suggestion for fixing the lubricator for the rear spring roller. | ||
| View original record | X. 2628 To BY. from Da. c. to CJ. c. to HS. Dal/M24.5.23. X. 2628 We send herewith N.sch.1418., shewing the suggestion we make for fixing the lubricator for the rear spring roller, so that it shall… | ||
| Scan107 | Recommendation to change thick leaf springs to thin ones for cars to be used in Canada due to the risk of breakage. | ||
| View original record | Hm. from Hs. X2688 Hsl/LG29.9.23. We would recommend that for a car to be used in Canada, it would be better to change the thick springs to thin ones. Apart from the riding effect of the thick leaf… | ||
| Scan108 | Increasing the strength of front and rear springs to prevent breakages. | ||
| View original record | Hs. X2628 BY2-P15.11.23. INCREASED STRENGTH OF SPRINGS. (Handwritten note: later with) I wrote to R. and suggested that we should increase the springs running on the Continent 25% and for English… | ||
| Scan109 | Brake and front suspension issues, and a proposed new scheme for axle control. | ||
| View original record | To CJ. from R. c. to RG. HS. c. to BJ. DA. Y2628 R3/M21.11.23. RE. VISIT OF RG. AND HS. TO WH. ON 20TH. NOV. 1923. X.9940 X.2628 X.1559 X.4214. We spent the whole of yesterday on brakes. With the… | ||
| Scan110 | Front road springs and steering gear, including breakages and potential modifications. | ||
| View original record | To HS. from R. V2628 R4/A30.11.23. RE. FRONT ROAD SPRINGS AND STEERING GEAR. X.2628 X.4214 X.3441 FRONT SPRINGS. Can you ascertain whether a freer movement of the ends would result in less spring… | ||
| Scan111 | Potential causes and solutions for front road spring breakages. | ||
| View original record | To DA. from R. c. to CJ. BJ. HS. c. to BY. Hl. X2628 R1/Mlo.1.24. RE. FRONT ROAD SPRINGS. X.2628 X.9410 I understand that our breakage on the bump is similar in character and position to that we get… | ||
| Scan112 | Continued note discussing the merits of balloon tyres versus larger wheels. | ||
| View original record | POST -2- contd:- also if Balloon, or semi balloon tyres are better? - if larger wheels are worse ? One would expect 'yes' to both. R. | ||
| Scan113 | Policy on changing thick leaf springs to an improved thin leaf type. | ||
| View original record | To Hm. N. P. S. CE. BE. Wor. Br. E. H. KJ. WS H2638 BJ5/H25.1.24. CHANGING THICK LEAF SPRINGS TO THIN LEAF TYPE. Please inform those concerned in your department that in future when customers complain… | ||
| Scan114 | The policy for changing thick leaf springs to the thin leaf type in response to customer complaints about squeaking. | ||
| View original record | To Hm. N. C. H. PN. Sg. OK. BK. Wor. BY. BP. Hs. KJP. K2628 BJ5/H30.1.24. CHANGING THICK LEAF SPRINGS TO THIN LEAF TYPE. With further reference to BJ5/H25.1.24, this applies to all complaints of thick… | ||
| Scan115 | The disadvantages of using stiffer front springs on ride quality. | ||
| View original record | R.R. 493A (40 H) (EL 12 12-7-23). J.H., D. Y2628 Expl. No. 2628 4261 REF: HS3/LG27.2.24. EXPERIMENTAL REPORT. To R. from Hs. c. to CJ. RG. c. to DA. E. c. to BY. WOR. RE. STIFFER FRONT SPRINGS. Our… | ||
| Scan116 | Note on customer acceptance of ride comfort following the addition of front brakes. | ||
| View original record | contd:- -2- of the front axle. It will not be accepted by customers that the addition of front brakes should make the car ride less comfortably. Hs. | ||
| Scan117 | Responding to queries about spring standardisation, detailing modifications for front brakes and usage in different countries. | ||
| View original record | BJ. from Hs. X2628 Hs3/LG1.3.24. X4261 (struck through) X2628 With reference to the attached standardisation sheet. Our report attached answers queries (1), (3) and (4). As regards query (2) - it is… | ||
| Scan118 | Standardisation of road springs for 40/50 HP and 20 HP models to suit bad roads abroad. | ||
| View original record | R.R. 755 (10M) (SL 72 18-7-23) MP 274954a. X2628. COMPLETED 4.3.24. STANDARDISATION of CHASSIS PARTS. Description of Parts. ROAD SPRINGS, 40/50 HP. AND 20 HP. Origin: To suit bad roads abroad.… | ||
| Scan119 | Diagram and table detailing suspension bump clearance measurements. | ||
| View original record | BUMP /2628 7-3-24 A B Table: Normal. 6.2" 5.9" Shortest Distance when Running. 4.4" 4.0" | ||
| Scan120 | Bumping test of front springs and rear anchorage, detailing failures of the springs and the frame. | ||
| View original record | R.R. 493A (40 H) (SL 42, 12-7-23). J.H., D. Y/2628 EXPERIMENTAL REPORT. Expl. No. V/331 X2628 REF: Hs2/LG10. 3. 24. To R. from Hs. c. to CJ. RG. c. to E. DA. c. to BY. WOR. BUMPING TEST ON FRONT… | ||
| Scan121 | Experimental testing of front axle control systems, proposing a design using semi-elliptic springs and radius rods. | ||
| View original record | To Hs. from R. c. to CJ. RG. DA. X2628 R3/M29.5.24. RE. FRONT AXLE CONTROL. X.3441 X.9421 X.2628 We have lately gone into all patterns of front axle control with a view to experimentally testing what… | ||
| Scan122 | Telegram received by telephone regarding a car trial and a percentage reduction. | ||
| View original record | RR 144A (50BKS.) (SK 671 23-5-23) MP 272631 X2628 ROLLS-ROYCE LTD. TELEGRAM RECEIVED BY TELEPHONE. Time Received 4.21 Date 18-4-24 To Royce Derby By MB from London 3.38 [Stamp: F.H. 19 APR 1924]… | ||
| Scan123 | From ROY to Hs. about forwarding a set of Axle Springs to The Dunlop Rubber Co. Ltd. | ||
| View original record | X2628 Chat from ROY. c. to Hs. ROY29/MG18.7.24. -------------------------- You will receive shortly from Hs. a set of Axle Springs, which please forward direct to:- The Dunlop Rubber Rubber Co.Ltd.… | ||
| Scan124 | The internal friction and damping characteristics of Firths and Woodheads road springs. | ||
| View original record | To R. from Hs. c. to BJ. c. to DA. c. to E. c. to BY. X2628 Hs5/LG18.7.24. FRICTION IN ROAD SPRINGS. X.2628 X.4429 X.9410 The question of internal friction of road springs was taken up at the time we… | ||
| Scan125 | Requesting load figures for a set of Axle Springs being sent to the Dunlop Company for fitment. | ||
| View original record | Hs. from ROY. X2628 ROY1/MG23.7.24. I have advised the Dunlop Company we shall be sending through shortly a set of Axle Springs for fitment with the special rubber insertion as arranged, and they ask… | ||
| Scan126 | Vehicle spring stiffness and its effect on ride quality for different car bodies. | ||
| View original record | CONFIRM' OF 'PHONE MESSAGE. (X2628) To BJ. FROM R. c. to CJ. HS. PN. X. 9410 X. 2628 R1/M7. 8. 24. OFFICE OPENED TO DAY. SAW BRIGGS TUESDAY. CONSIDER COMPARISON INFLUENCED BY DIFFERENT BODIES, BOTH… | ||
| Scan127 | Stiffness and increased friction in rear springs of the EAC.11 speed model car. | ||
| View original record | V2628 To BJ. from Hs. S E C R E T. Hs2/LG14, 8.24. R.R. SPRINGING. X2628 X9710 With reference to BJ1/H13.8.24 regarding R's memo. R1/M19.7.24. We agree that the car which first created the bad… | ||
| Scan128 | The torsion of deflection of standard, 12½% and 25% type front road springs. | ||
| View original record | To R. from Hs. c. to CJ. RG. c. to E. DA. c. to BY. X2628 Hs7/LG19. 8. 24. X9410 X2628 We attach herewith a report showing the torsion of deflection of front road springs - std. type, 12½% and 25%.… | ||
| Scan129 | Torsion and oscillation tests conducted on front road springs. | ||
| View original record | R.R. 493A (SDH) (D.A. 652 20-3-24) J.H.D. EXPERIMENTAL REPORT. Expl. No. 9410 2628 REF:Hs/ACL/LG19.8.24. TORSION AND OSCILLATION TESTS ON FRONT ROAD SPRINGS. Springs of different rating were tested to… | ||
| Scan130 | Test report on the torsional deflection of front road springs, detailing the springs used for the tests. | ||
| View original record | -2- TORSIONAL DEFLECTION OF FRONT ROAD SPRINGS. SPRINGS USED FOR THESE TESTS :- | | Std. 40/50. | No.3 | No.4. | |---|---|---|---| | No. of spring. | | | | | Piece No. | F.4634 | F.71244 | F.71568 | |… | ||
| Scan131 | Data table showing torque and pull forces applied to springs at various degrees of twist. | ||
| View original record | -3- Spring No. Twist of spg. in degrees. | Pull 'P' lbs. | Torque applied. lbs.ins. | Pull 'P' lbs. | Torque applied. lbs.ins. | Pull 'P' lbs. | Torque applied. lbs.ins. .33 | 137 | 2192 | 144 | 2304… | ||
| Scan132 | Measurement of friction and nip in road springs for the 46-PK open touring car. | ||
| View original record | To R. from Hs. c. to CJ. RG. c. to E. DA. c. to BY. Wor. +2628 Hs1/LG19.8.24. RE. NIP IN ROAD SPRINGS. X.8410 X.2628 We attach herewith two charts showing the amount of friction measured on the road… | ||
| Scan133 | Specification sheet for spring draw on 9-leaf and 10-leaf springs. | ||
| View original record | SPRING DRAW ON 9-LEAF SPRING No. F.2441. Space between leaves. No.1 and 2 .725" 2 " 3 .300" 3 " 4 .250" 4 " 5 .275" 5 " 6 .150" 6 " 7 .150" 7 " 8 Nil 8 " 9 Nil Thickness of spring with centre bolts… | ||
| Scan134 | Graph showing the load versus deflection test results for an off-side road spring, model 46PK. | ||
| View original record | DEFLECTION TEST OF OFF SIDE ROAD SPRING 46PK Y-AXIS: DEFLECTION 0.000 1.000 2.000 3.000 4.000 X-AXIS: LOAD IN LBS 0 170 470 670 870 1070 1270 1470 1670 1870 2070 2270 2470 2670 PLOT LINES: LOADING… | ||
| Scan135 | Deflection test chart for a near side road spring, model 46PK. | ||
| View original record | DEFLECTION TEST OF NEAR SIDE ROAD SPRING. 46PK Y-AXIS: DEFLECTION IN INCHES X-AXIS: LOAD IN LBS GRAPH LABELS: LOADING, UNLOADING DATA TABLE: LOAD IN LBS, DEFLECTION OF SPRING (LOADING), DEFLECTION OF… | ||
| Scan136 | Secret internal memo discussing responsibility for a spring failure and clarifying the roles of the Experimental and Drawing Office departments. | ||
| View original record | /2628 To Wor. from Hs. S E C R E T. HS2/LG1.9.24. X.180 X.2628 X.9410 With reference to your Worl/M1.9.24. surely some explanation should be given showing in what manner the Experimental Dept. have… | ||
| Scan137 | Page 2 of a memo discussing responsibility, efficiency and departmental capability. | ||
| View original record | contd :- -2- it will divide the responsibility, reduce the efficiency and crush the enthusiasm. We strongly resent the inference that the Expl: Dept: are not capable of knowing whether a part is made… | ||
| Scan138 | Road spring failures and performance during tests in France. | ||
| View original record | R.R. 493A (40 H) (SL 42 12-7-23). J.H., D. 42628 Expl. No. 9410 2628 REF: Hs1/LGS.9.24 EXPERIMENTAL REPORT. To R. from Hs. c. to CJ. BJ. c. to RG. H. c. to DA. EY. c. to Wor. S E C R E T. ROAD… | ||
| Scan139 | The life and failure rates of various car springs during road and bump tests. | ||
| View original record | R.R. 403A (40 H) (SL 42 12-7-28). J.H.D. -2- EXPERIMENTAL REPORT. Expl. No. 9410 2628 REF: Hsl/LG5.9.24. one pair ran 10,200. During that time the top leaf on one spring broke after 6,900 miles - on… | ||
| Scan140 | Approximate lifespan of front road springs, suggesting replacement after 50,000 kilometres. | ||
| View original record | X2628 P/W Hs. Ps.I/Go.IO.9.24 Re. Road Springs --------------------------- Your memo Hs3/LG.4.9.24 to hand. It is extremely difficult to give you an approximate life of a front spring because as you… | ||
| Scan141 | Ordering, design alterations, and required poundages of front springs for Demonstration and Trials cars. | ||
| View original record | X2628 Wd. c. Hs. Wor. BY18/H. 17.9.24. FRONT SPRINGS. ----------- I am handing you herewith print from F.71785 which embodies all Mr.Royce's latest requirements, and in addition, you will notice that… | ||
| Scan142 | The allocation of 100 pairs of springs and specifications for the top plate. | ||
| View original record | - 2 - BY18/H. 17.9.24. The balance of the 100 pairs of springs should be divided equally over the range of six drawings for which particulars are given on the drawings, that is, springs numbered… | ||
| Scan143 | Chemical analysis report for six road springs marked 1, 2, 3, 4, 5, and 6. | ||
| View original record | Hs. H11/EF19924. X2628 Laboratory. Re 6 Road Springs marked 1,2,3,4,5, and 6. Analyses:- 1. 2. 3. Carbon 0.53% 0.50% 0.40% Manganese 0.54% 0.56% 0.54% Chromium 1.08% 1.06% 1.02% Silicon 1.05% 0.82%… | ||
| Scan144 | Urgent request for various road springs for experimental and 'Olympia' trials cars. | ||
| View original record | To Wd. from Hs. X2628 Hs7/LG19.9.24. ROAD SPRINGS FOR EXPERIMENTAL CARS. X2628 /9410 The springs we require are as follows :- 2 pairs are urgently required for experimental cars which it is proposed… | ||
| Scan145 | Requesting fatigue tests on broken spring plates from two different suppliers to determine the best range to resist fatigue. | ||
| View original record | U.W. X2628 c. Hs. BYS/H. 25.9.24. I wish to have a series of Upton Lewis Tests carried out on the broken top plates taken from Messrs Firths and Woodhead's springs (front). Hs. will hand over to you… | ||
| Scan146 | Query regarding leftover springs following a spring change-over on chassis 18 NK. | ||
| View original record | N.W. As/Exp. Dept. This appears X2628 to be your matter EPHH 26.9.24 A12/H.25.9.24. re Chassis 18 NK. One of your men, Lidsey by name, was here some while back in connection with a spring change over… | ||
| Scan147 | The collection of springs for chassis 18-NK. | ||
| View original record | W/N. X2628 To A. from Hs. Hs6/LG26.9.24. RE. CHASSIS 18-NK. X2628 X9410 Referring to your A12/H25.9.24. We will collect the springs from Cricklewood at the first convenient opportunity. Hs. | ||
| Scan148 | Defining the new type of front springing and poundages for the 40/50 HP chassis. | ||
| View original record | X2628 Mr. [strikethrough] C. Mr.Booth. [strikethrough] C. HS. C. Mr. [strikethrough] C. Mr H. 40/50 HP. CHASSIS. FRONT SPRINGS. On the assumption that the new type springing will get through the… | ||
| Scan149 | Calculations and fitting procedures for front springs on various car models. | ||
| View original record | - 2 - BY/H. 3.10.24. added to each of the front springs over and above the calculated amount required, so that if a 1250 spring were required by calculation, the actual spring fitted would be 1250… | ||
| Scan150 | Specifications for varying spring stiffness and buffers on cars for different countries. | ||
| View original record | - 3 - BY1/H. 3.10.24. For normal cars generally, that is, cars in this Country and Abroad was a spring 20% stiffer than the old standard, on the assumption that normally, cars for England would,… | ||
| Scan151 | The Experimental Department's feedback regarding a buffer's effect on ride comfort. | ||
| View original record | - 4 - passed the Experimental Dept. satisfactorily. The latter at the moment have an open mind on the issue but are rather inclined to think that the buffer coming in earlier is likely to make the… | ||
| Scan152 | Querying the correct buffer clearance to be used for different spring types. | ||
| View original record | To DA. from Hs. c. to EY. X2628 Hs7/LG6.10.24. BUFFER CLEARANCE. X2628 / x9410 When I was at WW. I was under the impression that the same buffers were used for the 20% and the 12 1/2% springs.… | ||
| Scan153 | Standardisation of front springs for the 40/50 HP chassis. | ||
| View original record | To BY. from Hs. X2628 Hs9/LG6.10.24. 40/50 HP. CHASSIS - FRONT SPRINGS. X940 X2628 With reference to your BYl/H3.10.24. We suggest that a copy of this memo. is sent to Sales Dept. R's first… | ||
| Scan154 | Secret memorandum regarding the testing of different stiffness car springs in France. | ||
| View original record | To R. from Hs. c.c. to CJ. BJ. c.c. to E. DA. c. to BY. Wor. X2628 S E C R E T. TESTING SPRINGS IN FRANCE. BY. E. and DA. have approved of the Woodhead latest springs. Sets of these springs have… | ||
| Scan155 | From the Experimental Department seeking instructions on which springs to fit to cars 9-PK and 98-NK for testing in France. | ||
| View original record | contd :- -2- The Expl: Dept: would like definite instructions in connection with the following points :- (1) Is the car (9-PK) which is commencing the 10,000 miles test in France to run with Woodhead… | ||
| Scan156 | Standardisation of 40/50 HP road springs and fittings. | ||
| View original record | [Handwritten top center, underlined:] X2628 To BJ. from Hs. Hs5/LG6.10.24. 40/50 HP. ROAD SPRINGS. [Handwritten below subject:] X2628 [Handwritten below subject:] X9410 + H429. It would appear from… | ||
| Scan157 | Standardisation of chassis parts for front springs, brackets, and shackles to suit front wheel brakes. | ||
| View original record | RR 755 (10H) (SL391 2-11-23) MP 281297 COMPLETED 5.6.24. STANDARDISATION of CHASSIS PARTS. Date 12.5.24. X No. 2628 (Handwritten: U6429) Drawing No. Part List Description of Parts: FRONT SPRINGS,… | ||
| Scan158 | Fitting stiffer springs to Press Demonstration cars and future plans for car 48-PK. | ||
| View original record | X2628 To BJ. from Hs. Hs3/LGS.10.24. SPRINGS. X9410 X2628 With reference to BJ13/H7.10.24. All the cars which are being used for the Press Demonstration fitted with 4-wheel brakes, will be fitted with… | ||
| Scan159 | Testing road springs in France, comparing different stiffness levels and makes. | ||
| View original record | X2628 To CJ. } FROM R. HS. } c. to BJ. BY. PN. R./M9.10.24. RE. ROAD SPRINGS - TESTS IN FRANCE. X.9941 X.9410 X.2628 It seems as though our dynamometer bump test will give us the relative value of one… | ||
| Scan160 | Bump tests on road springs and proposing a new apparatus for continuous bending tests. | ||
| View original record | To HS. from DA. Y2628 DA3/M10.10.24. X.1331 X.9410 X.2628. BUMP TEST ON ROAD SPRINGS. Referring to Hs8/LGS.10.24., we infer that the springs tested were not the very latest thin leaf 12 1/2% springs?… | ||
| Scan161 | Testing and comparison of Firth and Woodhead front springs. | ||
| View original record | X2628 To Hs. from R. c. to CJ. DA. BY. R1/M16.10.24. RE. FRONT SPRINGS. X.2828 X.1331 X.9410 My idea of testing the exact strength and design of spring that we were going to use without insisting upon… | ||
| Scan162 | Telegram received by telephone enquiring about the current status of front spring testing. | ||
| View original record | RR 144A (50BKS.) (SK 871 23-5-23) MP 272631 ROLLS-ROYCE LTD. F.D X2628 TELEGRAM RECEIVED BY TELEPHONE. Stamp: RECEIVED 17 OCT 1924 Time Received: 11-49 Date: 17.10.24 To: Royce Derby By: WSA from:… | ||
| Scan163 | Telegram received by telephone from Johnson regarding production, tests, and vehicle specifications. | ||
| View original record | ROLLS-ROYCE LTD. TELEGRAM RECEIVED BY TELEPHONE. RR 144A (50BKS.) (SK 571 23-8-25) MP 272631 Time Received: Date: To: By: from: 2 in production to supply to customers where will tests finish what… | ||
| Scan164 | Query regarding the collection of springs for Chassis 18 NK. | ||
| View original record | M-W. Hs. X2628 A35/H.20.10.24. re Chassis 18 NK. ------ Will you please let us know when it is your intention to collect the springs mentioned in your Hs6/LG.26.9.24 | ||
| Scan165 | Breakage of front road springs and proposing design modifications to improve their lifespan. | ||
| View original record | X2628 To BY. } FROM DA. To HS. } DAL/M21.10.24. RE. FRONT ROAD SPRINGS. 12½% THIN LEAF+ X.2628 X.9410 Referring to the reports of the breakage of the bottom leaf of these springs, and to the note on… | ||
| Scan166 | Complaint about cars bumping on rubber buffers and the design considerations for front spring clearance. | ||
| View original record | X2628 To CJ. from Hs. Hsl/LG20.11.24. X9410 With reference to PN's complaint of recent cars bumping on the rubber buffers. The relative clearance between the front spring and the rubber buffer is… | ||
| Scan167 | Comparison of buffer clearance between the 40/50 HP and EAC.111 car models. | ||
| View original record | To BY. from Hs. X2628 Hs2/LG20.11.24. RE. COMPARISON OF BUFFER CLEARANCE BETWEEN 40/50 HP. & EAC.111. X9410 We find that there is relatively less buffer clearance on the EAC.111 cars compared with the… | ||
| Scan168 | Comparison of buffer clearance specifications for the standard 40/50 HP chassis and the EAC.111 chassis. | ||
| View original record | Hs/ACL/LG20.11.24. BUFFER CLEARANCE ON EAC.111. STD. 40/50 CHASSIS. Free camber = 3.500". Camber when loaded = 0. Load = W. Rating = W/3.5 in/lb. Buffer clearance = 2.200". Additional load to bring… | ||
| Scan169 | Hand-drawn sketch with calculations showing the buffer clearance for a 40/50 HP chassis. | ||
| View original record | X.2628 TOP OF FRAME DEPTH OF FRAME AT AXLE - 4.088 THICKNESS OF BUFFER - 1.250 TOP OF FRAME TO BUFFER - 5.338 TOP OF FRAME TO ℰ SPRING - 8.100 ℰ SPRING TO TOP OF U BOLT - .725 TOP OF FRAME TO TOP OF U… | ||
| Scan170 | Testing different types of car springs to address squeaking issues. | ||
| View original record | +2628 Hs. BYll/H. 29.12.24. SPRINGS. Don't you think it would be distinctly advantageous for us to try a set of Firths' springs fitted up with "Alf's Button"? I do not know if "Alf's Button" is the… | ||
| Scan171 | Recommendation for Woodheads springs fitted with 'Alf's Button' with specified poundages. | ||
| View original record | To BY. from Hs. Y2628 Hs4/LG31.12.24. SPRINGS - BY11/H29.12.24. We recommend that you obtain a set of Woodheads springs fitted with 'Alf's Button'. The poundages would be - 1100/1150 front. 1800/1900… | ||
| Scan172 | Request to pack up and return experimental parts and springs for chassis 18-NK from Cricklewood to Derby. | ||
| View original record | W/N. H2628 Hsl/LG5.1.25. CHASSIS 18-NK. Will you please pack up the experimental parts and springs which were left at Cricklewood, and return them to Derby by train. Hs. | ||
| Scan173 | The collection or return of springs for chassis 80 NK. | ||
| View original record | N-W. Hs. H2628 A27/H.2.1.25. re Chassis 80 NK. -------- With reference to your Hs4/LG.18.11.24, the springs ex the above car are still here. It was understood from your memo that they would be… | ||
| Scan174 | Querying the return of 6 Road Springs to settle an amount of credit. | ||
| View original record | X2688 Hs. My/WAB/FM2/NS.22.1.25. On the 12th inst we received 6 Road Springs from "N" Dept. We understand that these were handed to you in accordance with your memo Hs/LG.5.1.25. Will you please let… | ||
| Scan175 | Experimental springs for chassis 18-NK, clarifying their status and value as scrap. | ||
| View original record | To. My/WAB. from Hs. X 2628 Hs10/LG28.1.25. CHASSIS 18-NK. With reference to My/WAB/FM2/NS27.1.25 attached. The springs which were returned from Cricklewood were experimental springs which were taken… | ||
| Scan176 | Comparing the suspension and ride comfort of the Phantom and pre-front brake Silver Ghost models. | ||
| View original record | To R. from Hs. c. to BJ. RG. c. to E. DA. c. to BY. WOr. c. to Ns. X2628 Hs2/LG24. 4. 26. PHANTOM SUSPENSION. X8410 X2628 We have obtained several pre front brake Silver Ghost cars from the R. D. and… | ||
| Scan177 | Internal order for Ferodo spring interleaving material for front and rear springs. | ||
| View original record | X2628 To BY. from Hs. Hs7/LG27.4.25. FERODO SPRING INTERLEAVING. Will you please order the following material :- FRONT SPRINGS. Width of Fabric = 2.000" Lengths required :- 2 pieces 43.0" ) 2 " 41.0"… | ||
| Scan178 | Internal query about past experiments with under-slung semi-elliptic springs versus the cantilever suspension system on the 40/50-HP model. | ||
| View original record | S/W. (Hs). X2028 CxB/CM12.6.25. Will you kindly let me know whether you have, in the past, experimented with under-slung semi-elliptic springs on the 40/50-H.P. Rolls-Royce, with a view to deciding… | ||
| Scan179 | Confidential memo on the intention to change from cantilever to under-slung semi-elliptic springs for the 40/50 model. | ||
| View original record | W/S. Cx. from Hs. X2628 CONFIDENTIAL EX8/CM.2.6.25. X1245 Hs1/LG15.6.25. We cannot claim any advantages in the cantilever springs over the under-slung semi-elliptic springs. It is R's intention to… | ||
| Scan180 | The unsatisfactory progress of Dunlop Company's experiments with interleaving axle springs. | ||
| View original record | Hs. from ROY. X2628 ROY3/MG6.7.25. Axle Springs The Dunlop Company advise that their experiments with the interleaving of our Axle Springs have not progressed as satisfactorily as anticipated, and… | ||
| Scan181 | Springing demonstration to investigate suspension complaints and ride quality on the Phantom model. | ||
| View original record | To R. from DA. c. to CJ. CWB. Hs. c. to EP. E. 42628 DA1/M26.3.26 PHANTOM SUSPENSION. X. 8410 X. 2628 X. 8520 In accordance with your instructions Mr. Hardy and I went to Derby and attended a… | ||
| Scan182 | Tests on shock dampers and tyre pressures to address a riding complaint in various car models. | ||
| View original record | contd :- -2- (5) Coupling up the rear shock dampers in addition increased the complaint, being now about the same as (1). (6) By fitting balloon tyres (20/25 lbs/sq.in.) the riding of the car was… | ||
| Scan183 | From D.A. to H.s. discussing the results of suspension tests comparing a pre 'U' series Silver Ghost with a New Phantom. | ||
| View original record | To Hs. from DA. X2628 DA1/M13.4.26: RE. SUSPENSION. X.3900 X.9410 X.8410 X.2628 Referring to Mr. Nadin's note of the 9th.inst., re. the suspension tests in Derby, I am not entirely in agreement with… | ||
| Scan184 | Phantom suspension tests, concluding that spring friction is the primary cause of jolting. | ||
| View original record | To R. from Hs. c. to BJ. RG. c. to DA. E. c. to BY. Na. c. to CWB. Wor. X2628 Hsl/LG15.4.26. PHANTOM SUSPENSION. XAUTO X2628 With reference to your telegram instructing us to test the original pre… | ||
| Scan185 | The effect of fitting front wheel brakes on the springing and ride quality of the Phantom and Silver Ghost models. | ||
| View original record | contd :- -2- Phantom is in any way different as regards springing to the Silver Ghost. when fitted with 4-wheel brakes. (2) We do not believe the difference between the Silver Ghost with front wheel… | ||
| Scan186 | Internal memorandum discussing springing complaints and ride comfort on the Silver Ghost, Phantom, and 20 HP models. | ||
| View original record | contd :- -3- We went through phases of very bitter complaints on the old Silver Ghost, hence the changes to thick leaf springs and split bottom leaf springs, and back to thin leaf springs. We hold the… | ||
| Scan187 | Comparison between reversed leaf springs on Lancias and rebound leaf springs on Bentleys, discussing friction, life, and performance. | ||
| View original record | To R. from Hs/Rm. c. to BJ. Wor. c. to RG. E. c. to DA. EY. [handwritten] X2628 Hs/RmL/LG10. 8. 26. REVERSED AND REBOUND LEAF SPRINGS. [handwritten] 44048 X3805 X3854 We have been making some… | ||
| Scan188 | Graph showing deflection versus total spring load for Lancia 3-leaf reversed leaf springs. | ||
| View original record | LANCIA REVERSED LEAF SPRINGS. 3 REVERSED LEAVES REVERSED LEAVES DEFLECTION INS. TOTAL SPRING LOAD LBS EXTN. COMPRN. INTERNAL FRICTION APPROX 150 LBS | ||
| Scan189 | Graph plotting compression vs total load for a Woodhead Special Spring D, detailing loading and unloading performance. | ||
| View original record | [ "WOODHEAD SPECIAL SPRING D.", "4 REBOUND LEAVES & CLIPS", "REBOUND LEAVES", "GRADUAL LOADING", "UNLOADING", "INTERNAL FRICTION", "APPROX = 25 LBS.", "COMPRESSION - INCHES", "TOTAL SPRING LOAD LBS."… | ||
| Scan190 | Investigation into buffer clearance and performance issues with 20% stiffer rear springs for Continentally sprung cars. | ||
| View original record | CERTIFICATE OF INSPECTION X2628 To SY. from He/An. c. to Da. c. to Wor. ROLLS-ROYCE ENGINES AND SPARES REAR SPRINGS - CONTINENTALLY SPRUNG CARS X840 Some time ago we took up the question of buffer… | ||
| Scan191 | Technical memo discussing the negative impacts of fitting stiffer springs to cars, noting the risk of broken frames and worsened ride quality. | ||
| View original record | contd :- -2- CERTIFICATE OF INSPECTION BY A.I.D Addss. (handwritten) fitted with normal 2000 lbs. springs will hit the buffers when the static load is increased by 520 lbs. The substitution of 20%… | ||
| Scan192 | Comparing different types of steel used for road spring materials by various suppliers. | ||
| View original record | Confidential Hs/Rm from ROY. [Handwritten] X2628 ROY4/MG2.3.27 [Handwritten, struck through] Valve [Typed, struck through] Road [Typed] Spring Material Up to the latter part of 1924 Woodhead used… | ||
| Scan193 | Specification chart for Silico Manganese steel from Jonas Woodhead & Sons Ltd. | ||
| View original record | To accompany ROY4/MG.2.3.27 Chart "A" Jonas Woodhead & Sons Ltd. Steel. Silico Manganese Carbon ------------ 0.50 to 0.55% Carbon varied " ------------ 0.55 to 0.60% according to Thickness Silicon… | ||
| Scan194 | Material properties chart for Chrome Vanadium steel from Thos. Firth & Sons Ltd. | ||
| View original record | To accompany ROY4/MG/2.3.27 ----------------------- Chart "B" --------- Thos. Firth & Sons Ltd. Steel, Chrome Vanadium Max: strength ........ 93.26 Yield ............... 74.07 Elongation ..........… | ||
| Scan195 | Suitability of stiffer springs and shock absorbers for cars in Spain. | ||
| View original record | X2628 (COPY). X8410 X9410 X8410 S/W. Copy to EP. Hs. Rv. Madrid Depot. RE SPRINGS FOR SPAIN. Thanks for EY1/H11.3.27. I have received via. EP. copy of your EY8/H9.3.27. to him on the above subject. I… | ||
| Scan196 | Spring stiffness for cars intended for use in Spain and other Continental countries. | ||
| View original record | -2- Contd. modern use of a motor car is for all purposes and they are not kept for use separately in town or country, as may have been the case formerly. As a basis for discussion in regard to Spain,… | ||
| Scan197 | Request to obtain American-made Silchrome Valves for rebuilt Condor engines undergoing testing. | ||
| View original record | X4418 Y4634 Rg2/W24. 10. 23 By. c. Hs. c. RHC. c. NFP. For the "Condor" Engine that we are re-building for a further Fifty Hours' Test in connection with Contract No. A.M.435488/23, also for the… | ||
| Scan198 | Outlining the testing procedure for engine valves made from Firths and American Silchrome steel during a 10,000-mile trial. | ||
| View original record | X4634 RHB. c. Hs. c. D/AM. BY2/H. 5. 6. 24. VALVES. In order to get some definite information in regard to steel, I consider that we should run as many engines as we can which are going to do the… | ||
| Scan199 | Consignment of 52 Thomson Silchrome Steel valves from the U.S.A. for testing on 20 HP chassis engines. | ||
| View original record | XA634 [Struck-through text: Mr. [illegible], C. [illegible], O. [illegible], C. Hs., R.R.] BY/CXS/H. 17. 6. 24. 20 HP. CHASSIS VALVES. We understand that we have received a consignment of the above… | ||
| Scan200 | Suggestion to standardise the use of Silchrome valves for 20 HP cars. | ||
| View original record | To BY. from Hs. X4634 SILCHROME VALVES FOR 20 HP. CARS. We suggest that as this material has been standardised for valves for all cars, as soon as we have sufficient of these valves we should fit them… | ||
| Scan201 | Instruction to immediately commence using the new E.53158 valves for 20 HP engines. | ||
| View original record | X4634 BY12/H. 20. 6. 24. c. Sft. [crossed out] c. Hs. c. RY/ss. [crossed out] c. Chat. [crossed out] [STAMP: RECEIVED] 20 HP. VALVES. -------------------- We have now sufficient stock of Valves… | ||
| Scan202 | Proposal to use existing stock of Chromium Steel valves and new Silchrome valves for 20-HP chassis. | ||
| View original record | X4684 BY/C3/K. 1. 7. 24. Hs. 20-HP CHASSIS VALVES. We are instructing the works to use Silchrome Valves on all 20-HP production chassis, but the works inform us that they have 639 completely finished… | ||
| Scan203 | Use and distinctive marking of Chromium and Silchrome valves for the 20 HP engine. | ||
| View original record | To BY. from Hs. X4634. Hs2/LG2.7.24. 20 HP. VALVES. We consider it would be quite in order to use the Chromium valves for the inlet. We believe the Silchrome valves have a different shaped head owing… | ||
| Scan204 | Issues with a valve supplier and proposing the standardization of an alternative Special High Silicon Steel from a different manufacturer. | ||
| View original record | 44634 Hs. BY5/H. 12. 8. 24. VALVES. RE USE OF SPECIAL HIGH SILICON STEEL TO SPECIFICATION NO. 238. -------------------------------------------- We are constantly in trouble with the Thomson Silchrome… | ||
| Scan205 | Standardisation report on the use of Firths 'Silchrome' steel for engine valves. | ||
| View original record | RR 755 (10M) (SL391 2-11-23) MP 281297 STANDARDISATION of CHASSIS PARTS. COMPLETED 8.9.24. Date 21.8.24. X No. 4634 Drawing No. Part List Description of Parts. FIRTHS 'SILCHROME' STEEL FOR VALVES.… | ||
| Scan206 | Supply of new Silchrome exhaust valves for chassis GF.54. | ||
| View original record | +4634 Hm Hs e. WOr. BY/CS/H. 10.9.24. CHASSIS GF.54. WILSON. In reply to Yml4/W. 8.9.24. we consider that we should supply the above owner with a new set of Exhaust Valves made in Silchrome as used on… | ||
| Scan207 | Different practices for Silchrome valves in aero engines versus chassis. | ||
| View original record | To BY. E. Hs. RG. } FROM R. c. to CJ. +4634 R3/M11.3.25. RE. SILCHROME VALVES. X.4587 X.4634 I thank BY. for his memo. re the above, and for pointing out that aero engine practice is not the same as… | ||
| Scan208 | Silicon Chrome Steel for valves, comparing a French study with an internal specification. | ||
| View original record | X.4634 Hs. H12/EA25.8.26. Laboratory. Re Silicon Chrome Steel for Valves. The results of the French experimental work reported in "Automotive Industries" of July 1st.1926 are quite reasonable. A… | ||
| Scan209 | Inquiry regarding F.10. valves. | ||
| View original record | Any interest in connection with F.10. valves? Rm | ||
| Scan210 | Article on French experimental research into different compositions of valve steels, including a data table of their properties. | ||
| View original record | 6 VALVE STEELS Automotive Industries July 1, 1926 creased number of seats made possible by the lengthening of the wheelbase, and economy of fuel and oil due to the reduced resistance on curves. This… | ||
| Scan211 | Article from an automotive journal describing a new type of underframe for rail cars that allows them to negotiate sharp curves. | ||
| View original record | Automotive Industries July 1, 1926 5 Driving axle unit and cushioned drive gear of new Swiss railcar Driving axle with cover removed, showing double-gear drive Underframe of eight-wheeled railcar of… | ||
| Scan212 | Request to the laboratory for a chemical analysis of Silchrome steel valves made by Firths. | ||
| View original record | Laboratory. To Hl. from Hs/Rn. +46324 Hs/Rml/LG18. 9. 26. VALVES. With reference to the Silchrome steel valves made by Firths, of which you have recently taken a brinell test for us, we should like… | ||
| Scan213 | Laboratory report on the Brinell hardness and chemical analysis of Firth's Silchrome valves. | ||
| View original record | HS/RM.26 He Mr. Robotham XLH6324 A now spec. This analysis conforms, the brinell is OK although on the lower limit. ARH H13/EA24.9.26. Re Firth's Silchrome Valves. 2.0 27/9/26 By Laboratory. Report… | ||
| Scan214 | Performance and testing of Silchrome valve steel for all engines. | ||
| View original record | HL. BY. Hs. RG. E. FROM R. X4634 R2/M29.12.27. c. to BJ. Wor. VALVE STEEL (SILCHROME) X.4095 ALL ENGINES. X.4634 X.4587 Since I understand that we are having very good service from the above it would… | ||
| Scan215 | Laboratory report on Izod tests of Silchrome valve steel at varying temperatures and silicon content. | ||
| View original record | x4634 Laboratory. Re Valve Steel (Silchrome). As the result of a number of Izod tests, I came to the conclusion that we were getting some variation due to small differences in the temperature of the… | ||
| Scan216 | Valve material performance, detailing failures and comparing old designs with the current standard. | ||
| View original record | R. WOP. Hs. Rg. Bj. Hl. EP. Hm. XU634 BY4/G.11.5.28. VALVE MATERIAL. Referring to R5/M7.5.28. I am inclined to think that the correspondence which has been going on in connection with the above… | ||
| Scan217 | Valve steel specifications, a failure analysis related to silicon content, and a recommendation to switch to austenitic steel. | ||
| View original record | - 2 - BY4/G.11.5.28. In regard to the reduction of the silicon content we immediately reduced our specification upper limit and arranged with Messrs. Firths to have no material of the higher limit… | ||
| Scan218 | Proposal for testing the effect of prolonged heat treatment on Silchrome exhaust valves. | ||
| View original record | Hs. c to By. c to Rg. X4634 H16/EA16.5.28. R150. Laboratory. Re Effect of Exhaust Port Temperature on Silchrome valves. We suggest that it would be interesting to test a few exhaust valves which,… | ||
| Scan219 | Performance and selection of different valve steels, such as austenitic and silchrome, for engines. | ||
| View original record | To R. from Hs. c. to BJ. Wor. c. to RG. E. c. to BY. X434 Hs7/LG18.5.28. VALVE STEELS. X4587 X1474 We have some valves made in austenitic steel fitted to a F. engine. We have been so very free from… | ||
| Scan220 | Continued note on production difficulties with austenitic steel for valves, mentioning the A.I.D. and silchrome. | ||
| View original record | Contd :- -2- is a production difficulty that it is very important tests should be made to prove that the austenitic steel is going to overcome the production difficulties. We mention this because the… | ||
| Scan221 | Procedures for forging, testing, and producing valves from special valve steels. | ||
| View original record | Hs. X4634 BY8/G.15.6.28. VALVE STEEL Referring to the special valve steels, and particularly the matter of forging in relation to same, I have placed on order, as you will see from BY4/G.15.6.28, the… | ||
| Scan222 | The construction and performance characteristics of an annular spark gap. | ||
| View original record | X4645 EFC. AB.37. 26th Jan. 1922. X.3199 X.2065. ANNULAR SPARK GAP. This consists of a steel cone forming one electrode, arranged concentrically in a brass ring forming the other. The object is to… | ||
| Scan223 | Spark gap testing, noting issues with regular sparking and its relation to condenser capacities. | ||
| View original record | -2- Contd. 2.0 mm and sometimes the sparks appear much more purple. The difficulty in obtaining regular sparking may be due to slight roughness of the surface of the electrodes. Perfect smoothness… | ||
| Scan224 | Letter to M.L. Magneto Syndicate requesting information on a 12,000-volt annular spark gap and voltmeter. | ||
| View original record | X.4645 EFCS/T. 11th June, 1924. Mr. E.A. Watson, Messrs. The M.L. Magneto Syndicate, Victoria Works, Coventry. Dear Sir, During your recent visit to our premises, when the question of magneto… | ||
| Scan225 | Letter from M-L Magneto Synd. Ltd. regarding data on spark gaps and electrostatic voltmeters. | ||
| View original record | X 4645 TELEGRAMS: "CARLTON, COVENTRY" TELEPHONE 1008 & 1009 The M-L Magneto Synd. Ltd. VICTORIA WORKS, COVENTRY. REPRESENTATIVES AND AGENTS FOR HOME TRADE WITH MANUFACTURERS Birmingham T. T. Troy, 44,… | ||
| Scan226 | Letter to M.L. Magneto Synd. Ltd. regarding a paper, an 8000 volt gap, and literature from Kelvin, Bottomley and Laird. | ||
| View original record | X.4645 EFC2/T. 30th June, 1924. Messrs. The M.L. Magneto Synd. Ltd., Victoria Works, Coventry. For the attention of Mr. E.A. Watson. Dear Sirs, Very many thanks for your letter, ref. EAW/EE. of the… | ||
| Scan227 | Letter from The M-L Magneto Synd. Ltd. concerning a spark gap, voltage measurements, and a quotation. | ||
| View original record | X4645 TELEGRAMS: "CARLTON, COVENTRY" TELEPHONE 1008 & 1009. The M-L Magneto Synd. Ltd. VICTORIA WORKS, COVENTRY. REPRESENTATIVES AND AGENTS FOR HOME TRADE WITH MANUFACTURERS Birmingham T. T. Trip, 44,… | ||
| Scan228 | Letter to The M-L Magneto Synd. Ltd. regarding a 7,400-volt spark gap sent for trial. | ||
| View original record | X4645 EFC2/T. 4th July, 1924. Messrs. The M-L Magneto Synd,Ltd., Victoria Works, Coventry. For the attention of Mr. E.A.Watson. Dear Sirs, We have to thank you for the 7,400 volt spark gap which you… | ||
| Scan229 | Letter from M-L Magneto Synd. Ltd. confirming a spark gap sent is for the recipient's own use and does not need to be returned. | ||
| View original record | X. 4645 TELEGRAMS: "CARLTON, COVENTRY." TELEPHONE 1008 & 1009. The M-L Magneto Synd. Ltd. VICTORIA WORKS, COVENTRY. REPRESENTATIVES AND AGENTS FOR HOME TRADE WITH MANUFACTURERS Birmingham T. T. Trip,… | ||
| Scan230 | Letter to The M.L. Magneto Synd. Ltd. regarding the retention of a spark gap. | ||
| View original record | V4645 EFC2/T. 7th July, 1924. The M.L. Magneto Synd. Ltd., Victoria Works, Coventry. For the attention of Mr. E.A.Watson. Dear Sirs, We have your letter of the 5th inst., ref. EAW/EE., and note that… | ||
| Scan231 | ROY to EFC forwarding a communication from Messrs. Lucas and arranging for a 'Resistance' part to be passed on. | ||
| View original record | X. 46 45 EFC. from ROY. -------------- ROY16/MG18.7.24. Attached is copy of communication to hand from Messrs. Lucas following our discussion with Dr. Turner some few weeks back. I have asked the… | ||
| Scan232 | Explaining the advantages and electrical properties of an annular spark gap. | ||
| View original record | X 4645 EFC1/T16.7.24. THE ANNULAR SPARK GAP. x699 The chief advantages of the annular spark gap are:- (1) Constancy in operation. (2) Low impulse ratio. (3) Ease of manufacture. (4) Long Life. The… | ||
| Scan233 | Page of calculations for the electric potential and force between cylindrical conductors. | ||
| View original record | EFC1/T16.7.24. -2- Contd. The excess of potential (V) of the central wire over that of the outer conducting cylinder will then, by the definition of potential (as work done on unit charge) be ∫ from b… | ||
| Scan234 | Page of mathematical analysis concerning electric force and potential difference in relation to wire diameter. | ||
| View original record | EFGL/T16.7.24. -3- Contd. The two effects balance one another if d/da (a logE b/a ) is zero. This is the case if a . -b/a^2 + logE b/a = 0 if logE b/a = 1 i.e. if b/a = E b = Ea or a = 1/E b It is… | ||
| Scan235 | The optimal ratios and characteristics for spark gap design. | ||
| View original record | Contd. -4- EFCl/T16.7.24. It appears from the above that in the annular spark gap, the ratio of the wire diameter to the hole diameter should be at least equal to .368, in order to prevent the brush… | ||
| Scan236 | Comparison of a concentric sphere gap, including formulas for electric force and potential difference. | ||
| View original record | -5- COMPARISON OF CONCENTRIC SPHERE GAP WITH ABOVE. If the gap be a concentric sphere gap, instead of a concentric cylindrical gap (though this is not so practical a case), it is interesting to note… | ||
| Scan237 | Letter from Joseph Lucas Ltd. regarding the development and testing of a Magneto with Automatic Advance for a 40/50 HP Chassis. | ||
| View original record | X.4645 Copy From: JOSEPH LUCAS LIMITED. EOT/4 Well Street BIRMINGHAM July 17th.1924. Messrs. Rolls-Royce Ltd. DERBY Dear Sirs:- Magneto with Automatic Advance for your 40/50 HP. Chassis. We have gone… | ||
| Scan238 | Check of resistances for an Alcohol-Rose Bengal chemical leak from Dr. Turner. | ||
| View original record | X4645 EFC. WA.67. 24.7.24. X.4645. ALCOHOL-ROSE BENGAL CHEMICAL LEAK FROM DR. TURNER. CHECK OF RESISTANCES. The resistance of the above leak at various positions of the plummet in the solution, has… | ||
| Scan239 | Letter to Joseph Lucas Ltd. regarding a sample magneto with automatic advance for a 40/50 Chassis and requesting to purchase test apparatus. | ||
| View original record | X.4645 EFC3/T. 13th August, 1924. Messrs. Joseph Lucas Ltd., Wall Street, Birmingham. Dear Sirs, Re Magneto with Automatic Advance for our 40/50 Chassis, and combined chemical leak and annular spark… | ||
| Scan240 | Instructions detailing the testing of sparking voltages for two different annular gaps on A.C. | ||
| View original record | RR 238 (180 BKS) (SHDT.29-6-20.) MP 224339 ROLLS-ROYCE LTD. INSTRUCTIONS. To: E.F.B. Order No.: W.A. 68 Customer's No.: X 4645 Sparking voltages of annular gaps on A.C. a. Annular gap sent by Mr.… | ||
| Scan241 | Letter from Joseph Lucas Limited regarding an apparatus being offered with their compliments. | ||
| View original record | REGISTERED OFFICES & GENERAL DEPTS. GREAT KING STREET. BIRMINGHAM LONDON OFFICE & SHOWROOMS 224. SHAFTESBURY AVENUE. W.C.2 TELEGRAMS: 'LUCAS. BIRMINGHAM' TELEPHONE: CENTRAL 6730 (PTE.BCH.EX) JOSEPH… | ||
| Scan242 | Letter to Joseph Lucas Ltd. confirming an agreement to retain an apparatus indefinitely for testing magnetos. | ||
| View original record | x4645 EFC3/T. 22nd. August, 1924. Messrs. Joseph Lucas Ltd., Well Street, Birmingham. Dear Sirs, Further to our letter ref. EFC3/T. of the 13th inst. and your answer X/W2 of yesterday's date, we have… | ||
| Scan243 | Modifying an annular spark gap, requiring two sets of new interchangeable electrodes. | ||
| View original record | y4645 To RHC. from EFC. EFC1/T10.9.24. X+4645 - RE ANNULAR SPARK GAP. Herewith we hand to you our annular spark gap to which you recently made a slight modification. This has not entirely overcome the… | ||
| Scan244 | Requesting the manufacture of a central electrode to go with an earthed electrode for an annular spark gap. | ||
| View original record | X4645 To RHC. from EFC. EFC2/T9.10.24. X.4645. RE ANNULAR GAP. Will you kindly now have made for us one further central electrode .125" dia. This will go with the earthed electrode of inside dia.… | ||
| Scan245 | Tests on annular spark gaps under various conditions. | ||
| View original record | X4645 21.10.24. X.4645. ANNULAR SPARK GAPS UNDER VARIOUS CONDITIONS. Dia. of central electrode. Diameter of hole. Remarks. .087" .312" (3.59)(2). Invisible Coronal discharge prior to breakdown. .087"… | ||
| Scan246 | The performance of a 6-cylinder magneto and experimental work on annular spark gaps. | ||
| View original record | To R. & E. from EFC. c. C.J. & PN. c. Wor. EP. By. c. Da. Hs. X4645 EFC3/T20.10.24. ++ RE MAGNETOS. X4645 XF790 Following the formulation of our Specification of Performance of 6-cylinder Magneto… | ||
| Scan247 | Standardising a shunted leak for magneto performance testing to simulate poor spark plug conditions. | ||
| View original record | Contd. -2- EFC3/T20.10.24. big variation of conductivity with temperature, and it has been finally decided that the leak forming an integral part of the combination supplied by the Lucas. Co. is the… | ||
| Scan248 | Investigation into electrostatic principles and coronal discharge in annular gaps, comparing different electrode sets. | ||
| View original record | Contd. -2- EFC3/T20.10.24. whose dimensions were given above, it was found that they exhibited a coronal discharge preceding the spark-over. This was definitely visible in the case of the Lucas gap.… | ||
| Scan249 | Table of measurements and observations for different annular gap configurations and resulting coronal discharge. | ||
| View original record | -3a- 8.10.24. X.4645. ANNULAR GAPS. | Gap particulars. | Spindle dia. (a) (mm.) (Inches) | Hole dia. (b) (mm.) (Inches) | Gap (mm) (b-a)/2 | b/a | a/b | Remarks. | |---|---|---|---|---|---|---| |… | ||
| Scan250 | The standardization of magneto performance testing and comparison of different magneto models. | ||
| View original record | -4- Contd. EFC3/T20.10.24. contained in the remarks column of the table. It appears that there is not the definite change in passing through the ratio e that might be anticipated on electrostatic… | ||
| Scan251 | Performance specification for a six-cylinder magneto with automatic advance for the 40/50 car, version 2. | ||
| View original record | SPECIFICATION OF PERFORMANCE OF SIX-CYLINDER MAGNETO WITH AUTOMATIC ADVANCE FOR RR. 40/50 CAR. VERSION 2. (1) The weight of the magneto complete with automatic advance mechanism but otherwise without… | ||
| Scan252 | Series of magneto tests, including endurance, circuit, and utility tests under adverse conditions. | ||
| View original record | -2- Contd. (a) A short endurance test in which the magneto shall be run for 7 hours at a speed of 2000 r.p.m. with timing lever fully advanced (hand range), sparking being caused to take place on a… | ||
| Scan253 | Specifications for magneto firing speeds, timing, and silent operation. | ||
| View original record | -3- Contd. (6) The magneto shall be capable of firing regularly in sequence the six 5.5 mm. third point spark gaps in air at a speed of 3500 r.p.m. in the fully advanced position. (7) The magneto… | ||
| Scan254 | The advantages and electrical properties of an annular spark gap. | ||
| View original record | COPY. THE ANNULAR SPARK GAP. The chief advantages of the annular spark gap are :- (1) Constancy in operation. (2) Low impulse ratio. (3) Ease of manufacture. (4) Long life. The ideal spark gap would… | ||
| Scan255 | Page of calculations for electric potential and force between a central wire and an outer cylinder. | ||
| View original record | EFCl/T16.7.24. -2- Contd. The excess of potential (V) of the central wire over that of the outer conducting cylinder will then, by the definition of potential (as work done on unit charge) be -∫(from… | ||
| Scan256 | Mathematical analysis of electric force at the surface of a wire and conditions for brush discharge. | ||
| View original record | Contd. -3- EFCL/T16.7.24. The two effects balance one another if d/da (a logₑ b/a ) is zero. This is the case if a . a/b * -b/a² + logₑ b/a = 0 if logₑ b/a = 1 i.e. if b/a = ε b = εa or a = 1/ε b It… | ||
| Scan257 | Analysis of annular spark gap design, focusing on wire-to-hole diameter ratios and preventing brush discharge. | ||
| View original record | Contd. -4- EFCL/T16.7.24. It appears from the above that in the annular spark gap, the ratio of the wire diameter to the hole diameter should be at least equal to a/e = .368, in order to prevent the… | ||
| Scan258 | Page comparing concentric sphere gaps, including formulas for electric force and potential difference. | ||
| View original record | -5- COMPARISON OF CONCENTRIC SPHERE GAP WITH ABOVE. If the gap be a concentric sphere gap, instead of a concentric cylindrical gap (though this is not so practical a case), it is interesting to note… | ||
| Scan259 | Instructions for a utility test on a standard battery ignition system with a standard chemical leak. | ||
| View original record | RR 238 (100 BKS.) (BHST 28-8-20.) MP 224388 X. 4645. ROLLS-ROYCE LTD. INSTRUCTIONS. To E. Y. Co. Order No. WB17. Customer's No. X4645 Standard Battery ignition and standard chemical leak. (Utility… | ||
| Scan260 | Instruction sheet detailing distributor test results concerning conductivity and spark missing. | ||
| View original record | RR 238 (150 BKS.) (BH57. 29-8-20.) MP 224359 ROLLS-ROYCE LTD. INSTRUCTIONS. To ________________________________________ 19___ Order No. 2. Customer's No. __________ The conductivity of the chemical… | ||
| Scan261 | Instructions detailing a test on a battery ignition system with an additional standard ballast in series. | ||
| View original record | RR 238 (180 BKS) (SHST. 29-6-20.) MP 224388 X. 4645 ROLLS-ROYCE LTD. INSTRUCTIONS. To: E.Y.B. Date: 20-6-1925 Order No. WB 23 Customer's No. X 4645 Standard Battery ignition with additional standard… | ||
| Scan262 | Letter to Dr. Turner at The Lucas Electrical Co. requesting assistance with repairing a broken rose bengal high resistance glass tube. | ||
| View original record | X4645. EFC2/AD. 17th July, 1929. Dr. Turner, The Lucas Electrical Co., Well St, Birmingham. Dear Dr. Turner, Owing to an accidental breakage of the glass tube of the rose bengal high resistance which… | ||
| Scan263 | Letter from Joseph Lucas Research Laboratories enclosing notes and discussing apparatus. | ||
| View original record | X4645. TRADE MARK THE JOSEPH LUCAS RESEARCH LABORATORIES WELL STREET BIRMINGHAM TELEGRAMS "LUCAS, BIRMINGHAM" TELEPHONE NORTHERN 2201 (FIBRES) WHEN REPLYING PLEASE REFER TO EOT/4. E. Fowler Clark,… | ||
| Scan264 | Letter on methods for sealing and calibrating a liquid resistance utility instrument. | ||
| View original record | X4645 19th July 192. E. Fowler Clark, Esq., Messrs. Rolls Royce Limited, DERBY. With regard to the sealing of the glass tube of the liquid resistance utility instrument, we have used two methods and… | ||
| Scan265 | Letter to Dr. Turner of The Lucas Electrical Co. regarding a sealing method for high liquid resistance. | ||
| View original record | X4645. EFC2/AD. 13th August, 1929. Dr. Turner, The Lucas Electrical Co., Well St., Birmingham. Dear Dr. Turner, May I thank you for your letter of the 19th July with attached notes in answer to our… | ||
| Scan266 | Request to produce a set of annular spark gaps for ignition testing, based on an attached sketch. | ||
| View original record | X4645 RHC. from EFC. EFC4/AD29.1.31. X.4645. ANNULAR SPARK GAPS FOR IGNITION TEST PURPOSES. We require a set of annular test gaps for ignition purposes, and attached please find a rough sketch. Will… | ||
| Scan267 | Letter from Joseph Lucas Research Laboratories regarding a set of 6 concentric spark gaps. | ||
| View original record | X4645 THE JOSEPH LUCAS RESEARCH LABORATORIES WELL STREET BIRMINGHAM TELEGRAMS: "LUCAS, BIRMINGHAM" TELEPHONE: NORTHERN 5201 (PRIVATE) WHEN REPLYING PLEASE REFER TO HEW/P. Messrs. Rolls Royce Limited,… | ||
| Scan268 | Letter to The Joseph Lucas Research Laboratories regarding gaps for testing ignition coils. | ||
| View original record | XC4645 Hs/Wst.3/AD. February 3rd, 1932. The Joseph Lucas Research Laboratories, Well St. Birmingham. Dear Sirs, We thank you for your letter of the 2nd inst. ref. HEW/P. We will find these gaps very… | ||