Rolls-Royce Archives

Rolls-Royce Experimental Archives: Box ExFiles\Box 74\3\        Box Selection

IdentifierEntry
scan0001 Faults found on engine couplings during testing and suggesting solutions.
View original record Hs X3435 DEC 4 1920 RECEIVED A.T. c. to HS. EP23/E/3.12.20 RE. ENGINE COUPLING FAULTS ON TEST. We have had trouble with the nuts which hold the prongs on the inside of the coupling and which take up…

scan0002 Responding to concerns about engine coupling faults found during testing.
View original record R.R. 235A (100 T) (S.H 159. 11-8-20 G. 2800 X 3435 To [REDACTED] - from Sft. c. to [REDACTED] c. to Hs. Hs sft8/P22.12.20. [STAMP: RECEIVED DEC 29] X 3435 Re Engine Coupling Faults on Test.…

scan0003 Complaints and experimental tests regarding chassis coupling clatter.
View original record X.3435 A.T. HS. from EP. c. to DA. c. to Bys c. to EFC. EP2/F22.2.21. CHASSIS - COUPLING CLATTER. With reference to the complaints re slack in drive, we are given to understand that experimental tests…

scan0004 Complaints of slack in engine couplings occurring after comparatively short mileage.
View original record X3435 Hs. NOV 9 1922 RECEIVED EP/Thn6/H9.11.22. We are having a number of complaints from our repair Depots of having to take up slack in the engine couplings after comparatively short mileage. We…

scan0005 Standardisation of a spherical ended lock for a 40/50 HP engine coupling.
View original record Da. from Hs. V3435 Hs3/LG24. 9.23. 40/50 HP. ENGINE COUPLING. In R's memo. - continuation of R1/M24.8.23 Item. 2183, he states - "I think it might be worth while standardising for this job the scheme…

scan0006 Standardisation of chassis parts regarding the use of standard nuts on the engine coupling.
View original record R.R. 755 (10H) (SL 72 18-7-23) MP 274954s. X3435 Completed 26-10-23 STANDARDISATION of CHASSIS PARTS. Description of Parts. NUTS ON ENGINE COUPLING. Date 3.10.23. Origin. To use standard pieces.…

scan0007 Mack Rubber Block Coupling, attaching a copy of document Oy8-E-102223 and related blueprints.
View original record B3435 To Rr from BJ. c. to Hs. c. to HP. BJ/Py2/D1.11. Re: Mack Rubber Block Coupling. I attach copy of Oy8-E-102223 of October the 22nd., together with a copy of the blue prints referred to. BJ/Py.…

scan0008 Letter discussing the specifications and potential applications of the Mack rubber block coupling.
View original record Oy8-E-102223 Mr. Claude Johnson, Rolls-Royce, Ltd., London, England. (Copy for attention of Mr. Royce) " " " Mr. Hives " " " Mr. E.Platford) Dear Sir: Re: Mack rubber block coupling We send herewith…

scan0009 Standardisation document for an engine coupling design improvement.
View original record R.R. 755 (10M) (SL 72 18-7-23) MP 274954s. X 3435 COMPLETED 3.11.23. STANDARDISATION of CHASSIS PARTS. Date 8.10.23. Description of Parts. ENGINE COUPLING. Origin: To improve design. Experimental Test…

scan0010 Approving the suggestion to waterproof a flexible coupling with canvas.
View original record X3435 To E. RG. DA. FROM R. c. to CJ. BY. HS. EP. R5/M9.2.24. RE. FLEXIBLE COUPLING+ X.3435 X.3530 Alpe cord fabric for coupling does not seem a necessity, but I think your second point of enclosing…

scan0011 Design of an anti-groan device for existing and 'V' series cars.
View original record [Handwritten] X3435 To BY. from AJS. c. to CJ. R. c. to E. Hs. ANTI GROAN DEVICE - 40/50. X.1511 X.3435 Referring to your memo. BY10/H19.12.24., and wire of even date :- (1) CJ. has allowed me to…

scan0012 'groans' in the transmission on a standard chassis and the effectiveness of a fabric coupling.
View original record To BY. from E. c.c. to CJ. HS. X3435 E1/M23.12.24. RE. GROANS ON STANDARD CHASSIS. X.3435 X.1511 In reply to your memo. BY10/H19.12.24., MR. Stent has reported separately in AJS1/M22.12.24., on the…

scan0013 Coupling sleeve for 40/50 cars experiencing groans.
View original record To BY. from AJS. c. to R. CJ. HS. X3435 AJS/2M/9.1.25. COUPLING FOR 40/50 CARS WITH GROANS. X3435 X.1511 We send herewith LeC.1972 (original to BY - print to R.) shewing a coupling sleeve to enable…

scan0014 The condition of a dismantled 40/50 HP Spring Engine Coupling from Chassis 2291.
View original record V34357 Mx3/T21.2.25 Hs. c Wor. c By c Hp. 40/50.HP. Spring Engine Coupling. In view of the fact that we are considering the proposal to fit some of these temporarily on certain new 40/50 Cars, we have…

scan0015 Requesting a car with a known 'transmission groan' to test a fabric coupling for the 40/50 chassis.
View original record R.R. 493A (50H) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. to BJ. from Hs. c. to EY. c. to WOR. Expl. No. x32435 REF: Hs2/L.05.3.25. FABRIC COUPLING FOR STANDARD 40/50 CHASSIS. x9920 We require a…

scan0016 Problems and potential solutions for 40/50 and EAC fabric couplings.
View original record To Hs. from R. c. to CJ. BY. 13285 S E C R E T. RR/M28.4.25. 40/50 AND EAC. FABRIC COUPLINGS X. 8305 X. 3435 The coupling problem is not confined to EAC. but is a 40/50 proposition, and the reason for…

scan0017 Analysis of a fabric coupling's performance under reverse torque and discussion of testing methods.
View original record X3435 Extract from R1/M29.4.25. (X.8770 X.2565) Coupling. X.8305 X.3435 I have mentioned elsewhere that this is not only an EAC. but equally a 40/50 problem. We calculate that if we can make a fabric…

scan0018 Proposal to trial Fabric Flexible Couplings from The Hillman Company.
View original record BY. from ROY. c. to Hs. ------------------ 13435 ROY6/MG19.5.25. ------------------ The Hillman Company, Dudley, are making big claims for their Fabric Flexible Couplings, and have submitted a…

scan0019 Quality and potential of new fabric couplings from Hillmans of Dudley.
View original record Y3435 Hs. BY10/H. 12.6.25. we have received two fabric couplings from Hillmans of Dudley, made to our standard dimensions. The plates on the coupling have been made by hand, and therefore the finish…

scan0020 Requesting the testing of Hillman Fabric Flexible Couplings.
View original record [strikethrough] X3455 Hs. from ROY. -------------------- ROY17/MG19.4.26 I wonder if you could now arrange to test out the Hillman Fabric Flexible Couplings we passed you some few months ago, but…

scan0021 Request for the supply of specific Alpe Couplings with various thicknesses.
View original record Roy. from Hs/Rm. Y3435 Hs/Rm3/LG4.6.28. Will you please obtain for us the following Alpe Couplings :- Disc dia. 4¾". 2 off .5" thick. 2 " .75" " 2 " 1.00" " No drilling of any sort - the flexibility…

scan0022 Comparison of the performance and condition of American and British fabric engine couplings.
View original record EP. Hs. C. Worr. Y3435 BY11/G.4.10.28. FABRIC ENGINE COUPLINGS. I think the main difference between the American bulged fabric coupling and our own type is that the bulged scheme does not show so…

scan0023 Comparing the relative stiffness and characteristics of bulged and standard Hardy fabric couplings.
View original record To OY. from Hs/Rn. c. to BY. c. to DA. c. to E. X3435 Hs/Rm1/LG15.1.29. FABRIC COUPLINGS. Herewith some information of the relative stiffness of the Bulged and Standard Hardy couplings. It will be…

scan0024 Graph comparing the torque vs. angular deflection for Bulged and Standard Hardy fabric couplings.
View original record TORQUE LBS FT 800 600 400 200 STANDARD HARDY - - x - - BULGED _____ ANGULAR DEFLECTION DEGREES 1° 2° 3° 4° 5° 6° COMPARISON OF BULGED AND STANDARD FABRIC COUPLINGS

scan0025 Graph plotting torque against angular deflection to measure transmission and tyre flexibility.
View original record TRANSMISSION FLEXIBILITY G II. REAR OF GEAR BOX TO TYRE. TYRE FLEXIBILITY INCLUDED. TORQUE LBS.FT ANGULAR DEFLECTION 100 80 60 20 0 2° 4° 6° 8° 10° 12° 14° 16° 18° 20°

scan0026 Graph showing the torque vs. angular deflection characteristics for new and worn Hardy couplings.
View original record NEW AND WORN HARDY COUPLING CHARACTERISTICS TORQUE-LB FT ANGULAR DEFLECTION 0 100 200 300 400 500 600 0 1º 2º 3º 4º 5º 6º 7º HARDY NEW HARDY 4000 MILES HARDY WORN BADLY

scan0027 Suggesting improvements to the 40/50 chassis magneto drive and engine/gearbox coupling.
View original record R.R. 235A (500 T) (S.D. 408. 26-4-17.) Bm. 2/156/13. X.3530. COPY EH4/LG4.4.19. 4th April 1919. To R. from EH. c. to CJ. c. to E. c. to BY 1/2 c. to Da. RE 40/50 CHASSIS MAGNETO DRIVE X.2762 The…

scan0028 Suggestions for the 40/50 HP chassis magneto drive and rear coupling between the engine and gearbox.
View original record R.R. 235A (500 T) (S.D. 408. 26-4-17.) Bm. 2/156/13. E6/GS/4.19. To EH. from R. c. to CJ. c. to BY. c. to Da. c. to EFC. X.3530 - RE 40/50 H.P. CHASSIS MAGNETO DRIVE AND REAR COUPLING BETWEEN ENGINE…

scan0029 Design and material choice for a magneto coupling, comparing leather/fabric with serrated drives.
View original record COPY. To Da. } from R. to EH. c. to CJ. R6/G11.4.19. 11th. April 1919. RE COUPLING FOR MAGNETO. X.3530 With reference to the coupling for the magneto, Mr. Elliott and I have considered this, and…

scan0030 Introduction of a new fabric magneto coupling.
View original record X.3555. X.3530 Extract from Bnl/P14.5.19. X.2762. - MAGNETO COUPLINGS. X.3555. Mr. Royce wishes to incorporate a new type of fabric coupling, as soon as possible, but as this design is, at the moment…

scan0031 The design of an experimental 40/50 HP magneto drive, focusing on the fabric couplings and heat protection.
View original record R.R. 235 A (100 T) (S.F. 575, 16-4-19) G. 2354. To DA. from E. c. to CJ. c. to BN. c. to EH. c. to EFC. RE EXPERIMENTAL 40/50 H.P. MAGNETO DRIVE - X.3530A/B N. SCHEME 52. In reply to your memo to Mr.…

scan0032 Design memo discussing alterations to a castellated drive system, with sketches for the front and rear joints.
View original record Contd. -2- wish to try the castellated type of drive, in which case the design should be altered as follows. The front joint should be made with the simplest form of dust cover, thus - SPLIT the rear…

scan0033 Design points for the 40/50 HP Magneto Drive and Couplings.
View original record R.B. 285 & (100 T) (S.F. 575. 16-4-19) G. 2354. To Da. from E. c. to CJ. c. to EH. c. to Bn c. to EFC. c. to BY. X.3530 A/B RE 40/50 H.P. MAGNETO DRIVE AND COUPLINGS Referring to N scheme 31, Mr.…

scan0034 Specifications for aluminium covers, fibre washers, magneto drive and fabric coupling drive.
View original record Contd. -2- E6/G26.7.19. The aluminium covers should have the correct hand of thread as on the existing car, so that if they encounter any obstruction when turning round they only tend to become…

scan0035 Extract from a report on chassis 49-GB, suggesting solutions for a noisy magneto drive.
View original record R.R. 235 B (200 T) (S F. 674. 22-5-19) G. 2376 X.3530. Extract from R4/G22.9.19. RE CHASSIS 49-GB. The following is a report giving my impression of the above chassis:- (3) Magneto drive noisy through…

scan0036 List of requested modifications and new parts to be fitted to chassis 2.EX.
View original record R R 235 A (100 T) (S.F. 846 6-8-19) G. 2460. X3530a HaL/LG29.12.19. To HHC. from Hs. X. 3743. - RE Chassis 2.EX. We would like the followingnew parts fitted to chassis 2.EX. 1. Change Axle for one…

scan0037 Provision for a magneto brake on new magneto drives for the 40/50 chassis.
View original record R R. 235 A (100 T) (S.F 846 6-8-19) G. 2460 X.3530 To Da from Hs. c. to RH. C.K. Hs2/LG3.2.20. X.3530 RE NEW MAGNETO DRIVES FOR 40/50 CHASSIS. X.2762 We consider that the new magneto drives, both the…

scan0038 Provision of a brake drum on the magneto drive for the 40/50 chassis.
View original record R.R. 235 B (50 T) (S.F. 846. 6-8-19) G. 2461. X.3530 To Hs. From Da. Clh c. to BN. Da4/LG4.2.20. RE NEW MAGNETO DRIVES FOR 40/50 CHASSIS. In reply to your Hs2/LG3.2.20. we originally arranged for a…

scan0039 List of new parts fitted to a car intended for a 10,000-mile run, with associated remarks.
View original record X.3530 Extract from He2/LGS.1.20. X.3743. - RE CAR TO RUN 10,000 MILES. X.3647. -------------------------------------------- This car will leave here on Wednesday. It is fitted with the following new…

scan0040 New magneto drive designs for the 40/50 HP chassis, recommending a provision for a brake to solve noise issues.
View original record R.R. 235A (500 T) (S.D. 408. 26-4-17.) Bm. 2/156/13. X 3530 To R. from Bn. Copy to CJ. " HS. " Da. " Ck. Bn7/W9.2.20. X.3530 Re New Type Magneto Drives for 40/50 H.P. Chassis. With reference to the…

scan0041 The 10,000-mile test of the 2EX chassis, detailing the magneto drive, new air pump, and coil.
View original record X.3530 X.3443. - 2EX Chassis - 10,000 mile Test. -2- Contd. X.3530? X. 2. Magneto Drive. The Magneto Drive which has been running on 2.EX is one made up with Hardy Fabric joints. This has run quite…

scan0042 The magneto drive design, addressing heat from the exhaust pipe and recommending a specific transmission shaft construction.
View original record X.3530. To Hs. from R. Copy to CJ. " " Bn. " " Da. " " By. X.3530. RE MAGNETO DRIVE. Providing you are satisfied that the exhaust pipe will not damage by heat, the fabric universal joints, this is the…

scan0043 Extract detailing a list of requested parts and modifications for a car for West Wittering.
View original record X3530- Extract from R4/G19.4.20. X.3923. RE CAR FOR WEST WITTERING. ---------- I enclose herewith a list of pieces that I understand you will be able to fit to the car I am to have, so that I may get…

scan0044 Extract discussing the standardisation of parts following a 10,000-mile test on Car 2.EX.
View original record R.R 235 a 100 T (S.F. 846. 6-8-19) G. 2460. X 3530 Extract from EP6/F19.4.20. X.3647. RE STANDARDISATION OF PARTS WHICH HAVE BEEN ON X,3743. 10,000 MILES TEST CAR 2.EX. With reference to your…

scan0045 Supply and modification of magneto fabric discs for dynamo drive couplings.
View original record To Hs. From Da. c. to RHC. EFC X.3530 Dal/CB21.4.20. X.3530. Dynamo Drive - Disc couplings. Please note we are informed by Messrs. Ed. J. Hardy & Co. that they are sending us six Magneto Fabric Discs…

scan0046 Planned improvements for American-built cars, including thermostat, clutch, magneto, and petrol tank updates.
View original record X.3580 By. from Hs. Hs2/LG.15.20. X.3614. W AMERICAN BUILT CAR. We consider that America should be warned of the following improvements which we hope to incorporate on our cars shortly :- 1.…

scan0047 Design points for the American chassis, specifically the magneto drive and petrol tank.
View original record C to EFC Na. from BY. c. Btn. c. OY. c. Hs. COPY. X.3530 2 L BY1/P27.5.20 T X.3614 RE AMERICAN CHASSIS. There are two further points in regard to design as follows:- (a) MAGNETO DRIVE. X.3530 We…

scan0048 Outlining a delay and a list of new parts being fitted to a replacement vehicle, car 6.EX.
View original record To R. from Hs. c. to Co. c. to En. c. to E. c. to Ds. X3530a Hs2/LG2A.5.20. X.3923. RE NEW CAR - 6.EX. We have been delayed on 6.EX Car which we are sending to you to replace 1.EX Car, owing to the…

scan0049 Manufacturing accuracy of a flexible drive for the Magneto with Hardy & Company.
View original record +3530 COPY. EH. from BY. R.G.FC EP. X.3530 CHASSIS - MAGNETO DRIVE. X.2762 Referring to the question of the probable adoption on an early date of a flexible drive for the Magneto, I have been…

scan0050 Extract listing experimental parts to be fitted to the 6.EX car at West Wittering.
View original record R.R. 285a (100 T) (S. G. 643, 19-2-20) G. 2613 X 3530 Extract from Hs6/LG28.6.20. X.3923. RE CAR 6.EX. In reply to your telegram, we have arranged to arrive at West Wittering about 10-30 A.M. on…

scan0051 Raising concerns about the Hardy fabric coupling for the magneto drive on the postwar 'P' Series chassis.
View original record Hs. from EY. c. Mr Shelton. c. Hs. c. EFC. X 3580 BY10-P26.7.20. X.3530 CHASSIS - MAGNETO DRIVE. --------------------- In view of the fact that we are now instructed to order up material for a further…

scan0052 Issues with the fabric coupling type of magneto drive and the move towards a serrated type.
View original record BY. from Hs. C. to Dh. SF Cx3530 HS5/LG28.7.20. X.3530 X.2699 MAGNETO DRIVE. We are not entirely satisfied with the fabric coupling type of magneto drive and are pushing on with our tests with the…

scan0053 Comparing the performance and advantages of serrated and fabric magneto drives for the 40/50 chassis.
View original record X.3580 Hs/LG27.9.20. To R. from Hs. CJ. Bn. E. Da. Hy. X 3629 (crossed out) X.3580 NEW MAGNETO DRIVES. We have now had considerable experience with both the fabric drive and the serrated magneto…

scan0054 The issues with fabric magneto drives, recommending a switch to a standardized serrated magneto drive.
View original record -2- HBS/1.027920. Contd. as the magneto drive pinion is reasonably tight, the brake is not required. There should be no difficulty in producing engines with magneto pinions which do not cause rattle.…

scan0055 Testing of an improved serrated magneto drive and the production of 'O' and 'P' series.
View original record Hs. from By. c. to Mr. Shelton. c. to EFC. X.3530 By7/P27.9.20. X.3699. X.3530. MAGNETO DRIVE & FITTINGS. Referring to the question of the improved drive for the magneto of the serrated form, I would…

scan0056 Standardisation of serrated magneto drives over the fabric type.
View original record X3530 To Hs. from R. Copy to CJ. " " Bn. " " EP. " " R.R. of America Inc. (For the attention of Oy). ------------------------- X.3699. X.3530. RE MAGNETO DRIVES. With reference to magneto drives, I…

scan0057 Proposal to replace a fibre washer with a paper washer in the serrated type magneto drive due to charring issues during dynamometer testing.
View original record Mr Shelton from BY. C. E.P. C. Hs. X3530 BY6-P9.9.21. X3699 FIBRE WASHER IN SERRATED TYPE MAGNETO DRIVE. In view of the fact that the present fibre washer chars up during the dynamometer run on the…

scan0058 Covering memo regarding communication from the Self-Sealing Rubber Co. Ltd. about improved flexible coupling discs for cars.
View original record BY from ROY. c. to Hs. e. to Rs. V3530 ROY13/MG27.2.24. Attached is copy of a communication from the Self-Sealing Rubber Co.Ltd, Birmingham, re improved Flexible Coupling discs for cars - which may be…

scan0059 Letter from The Self-Sealing Rubber Co. Ltd. promoting their patented improved flexible coupling discs for cars.
View original record Copy of Letter. ---------------- From: THE SELF-SEALING RUBBER CO.LTD. Hermetic Works, Ryland Street BIRMINGHAM February 25th.1924. Messrs. Rolls-Royce Ltd., Nightingale Road, Osmaston, DERBY. Dear…

scan0060 Letter from The Self-Sealing Rubber Co. Ltd. concerning the fitting and protection of patent coupling discs.
View original record Continued. thus considerably weakening the tensile strength and durability. FITTING. The moulding of all rivet holes in the Discs greatly facilitates the ease and exactness of fitting and rivetting…

scan0061 Test report from The Self Sealing Rubber Co. Ltd. on the tensile strength of flexible coupling discs.
View original record Sheet 3. From: THE SELF SEALING RUBBER CO.LTD. HERMETIC FLEXIBLE COUPLING DISCS (Prov.Pat) ------------------------------------ As the result of a series of special tests made by the Engineering…

scan0062 Waterproofing of a flexible coupling with canvas.
View original record X3530 To E. RG. DA. FROM R. c. to CJ. BY. HS. EP. RE/M9. 2. 24. RE. FLEXIBLE COUPLING+ X. 3435 X. 3530 Alpe cord fabric for coupling does not seem a necessity, but I think your second point of…

scan0063 Complaints regarding engine coupling rattles, comparing pre-war and post-war cars.
View original record Handwritten note (top left): Hs By Please note & return EP with your comments. Handwritten note (top right): X 4191 EP 31/8/20 (2) Typed content: Long Island City, August 9, 1920 EWC3-AM9830 To: Mr.…

scan0064 Letter from Maurice Olley regarding engine coupling discs with conical rubber inserts being sent for testing.
View original record X4191 Oy4-E-82427 August 24th, 1927. Mr. R. W. H. Bailey, Rolls-Royce Ltd., Derby, England. (Copy for attention of Mr.Hives) Re Engine Coupling Dear Sir: I mentioned to you the engine coupling discs…

scan0065 American Standardisation Sheet No. 108 for Engine Coupling.
View original record Hs. X491 EP/Thn4/H20.9.28. AMERICAN STANDARDISATION SHEETS. No. 108. Engine Coupling. We attach hereto Proposal Sheet re above. Will BY. please make his comments and pass to Hs. to comment upon and…

scan0066 Ordering, testing, and observed performance of bulged fabric engine couplings.
View original record X4191 OY8.R.11.26.28 November 26th, 1928. TO: Mr. Beaver Mr. Bailey(England) Mr. Hives (England) cc Mr. Nadin Mr. Poole Mr. Ainsworth Mr. Caswell Mr. Ross Mr. Wilkinson Mr. Burton FROM: Mr. Olley…

scan0067 The effects of a damaged disc, noting fabric breakdown, transmission clatter, and clutch grabbing issues.
View original record - 2 - When the loading is increased suddenly however the fabric has been seen to run out very much more up to about .080 or .100. This occurs when the engine is running in high gear and the brake…

scan0068 Report on the flexibility of a fabric coupling and its potential to cause clatter during declutching.
View original record OY5. CU191 January 31st, 1929. TO: Mr. Burton Mr. Caswell Mr. Soutter cc - Mr. Southern Mr. Ainsworth Mr. Knapton Mr. Fuller Mr. Poole Mr. Ross Mr. Robotham (England) FROM: Mr. Olley RE FABRIC…

scan0069 Chart plotting torque against angular deflection for various transmission coupling discs.
View original record S.K. 283. CHART OF COUPLING DEFLECTION Oy JAN31/'29 LBS-FEET TORQUE ON TRANSMISSION-LINE ANGULAR DEFLECTION ON TRANSMISSION-LINE HARDY DISC NEW BULGED FABRIC - NEW RED'D HARDY DISC - 4000 MILES HARDY…

scan0070 Piston failure on engine 1.190.12, caused by seizing due to insufficient lubrication.
View original record X 868 c. to Sor for WH. EP25/W10117. RE PISTON FAILURE ON 1.190.12. With reference to the above engine, on which I reported piston failure whilst the engine was in service, we have now received the…

scan0071 Engine piston seizure, proposing increased clearance and detailing an inspector's account of a specific failure.
View original record 2. There certainly has, during the test of this type of engine, been a greater tendency for the pistons to seize up than with the "Eagle" type of engine, and we are of the opinion that a .002"…

scan0072 Engine repairs for the Admiralty and the War Office, and the question of who bears the cost.
View original record 3. The Admiralty, in giving us instructions to carry out the necessary repairs to this engine, stated that they presume the work will be carried out by us free of charge. Do you think we ought to…

scan0073 And graph analysing gas leakage past pistons in relation to the number of rings used.
View original record To R. from EPC. c. to E. " " J. " " EH. " " Ev. X.858 EFC2/T22.3.17. X.858 X.2209 RE LEAKAGE PAST PISTONS WITH VARIOUS NUMBER OF RINGS. Attached to Mr. Elliott's copy of this note is a copy of a…

scan0074 Continued analysis of leakage in relation to the number of rings and pressure.
View original record -2- EFC2/T22.3.17. Contd. The amount of leakage attains the same limit eventually independently of the number of rings. The limit is obtained when the ratio of the pressures is n times the limiting…

scan0075 Note attaching a photostat copy of an article and discussing gas flow calculations through orifices.
View original record -3- EFC2/T22.3.17. Contd. In this connection we attach to Mr. Royce's copy of this note a photostat copy of an article taken from the Auto-Car of May 8th 1915, which we think may be of interest. The…

scan0076 Issues with gas leakage past split type pistons, leading to audible noise and fumes inside the car.
View original record EH. from EP. c. to En. c. to BY. c. to Da. c. to E. [Handwritten]: C.1R. [Handwritten, top right]: X.858 EP19/F6.2.20. [Handwritten, crossed out]: X.3732 [Handwritten, crossed out]: X.2Y48 RE LEAKAGE…

scan0077 Continued technical note (page 2) expressing dissatisfaction with dynamometer power and compression readings.
View original record Contd. -2- We are also not happy with our dynamometer power and compression readings. EP.

scan0078 Extract discussing the need for extra piston rings to overcome rattles and improve gas tightness.
View original record x.858 Extract from No. 13.2.20. x.2448 - Re Piston Rattles. x.858 (5) Apart from overcoming piston rattles we need the extra rings to improve gas tightness of the pistons.

scan0079 Complaint regarding fumes inside covered car bodies, with suggestions for remedies and a request for retrospective application to post-war models.
View original record Hs. from EP. c. to Bn. c. to By. c. to Da. X.858 EP11/F24.2.20. X.3908. RE FUMES INSIDE COVERED BODIES: X.858. X.3431. X.2748. With reference to my complaint re. the above, I should be glad if you…

scan0080 Testing piston clearances for cast iron and split pistons to address knocking and engine stiffness.
View original record X.858 (crossed out) X.2448 - Pistons. Contd. -4- Hsl/LG12.4.20. went in a matter of .005" to .006". On the next set we hammered them before we machined them to get rid of the internal strains. We…

scan0081 Continued discussion on piston design, gas leakage, and the effectiveness of different types of piston rings.
View original record Contd. -5- Hs1/LG12.4.20. fitting portion of the piston assisted in holding the gas. The gas which leaks past a piston gets by the stop or joint then round the band between the rings to the next stop…

scan0082 Comparison of horsepower (HP) for an engine with cast iron vs. aluminium pistons, and a test showing HP with different numbers of piston rings.
View original record 12.4.20. COMPARISON OF HP. TAKEN ON A STANDARD ENGINE FITTED WITH CAST IRON AND ALUMINIUM PISTONS. H.P. ALUMINIUM. CAST IRON. Cut-out open. Closed. Cut-out open. Closed. R.P.M. 2250 86 75 84.5 73 2000…

scan0083 Proposal to add extra rings to pistons to resolve various engine faults.
View original record X.858 Hs. c. to Bn. c. to By. c. to Ba. c. to EFC. EP4/F20.4.20. X.3751a. RE FIXING OF EXTRA RINGS AT TOP OF PISTONS. X.858. ------------------------------------------------------ I should be glad if…

scan0084 Engine issues including oil leaks, ignition problems, and unsatisfactory performance.
View original record Contd. -2- EP4/F20.4.20. oil leaks which take place from the various openings of the crankchamber which we have previously complained of, i.e., tappets, actuating control rods passing through the…

scan0085 Complaints and potential solutions for fumes entering the interior of covered car bodies.
View original record Hs. from EP. c. to Bn. c. to BY. c. to De. X.858 EP11/F24.4.20. X.3908 - RE. FUMES INSIDE COVERED BODIES. X.858. X.819 With reference to my complaint re. the above, I should be glad if you will let me…

scan0086 Unfavorable criticism regarding post-war car acceleration and horsepower compared to pre-war models.
View original record R.R. 225A (100 T) (S.H. 159. 11-8-20) G. 2800 X.858 R. from EP. c. to Hs. c. to EFC. EP2/F10.9.20. 10th Sept. 1920. X.3922. RE HP. AND WANT OF ACCELERATION. X.3751a. X.858. X.3056. With reference to…

scan0087 Engine performance comparing high and low compression, discussing over-oiling issues and customer feedback.
View original record R.R. 285A (100 T) (S.H. 159. 11-8-20) G. 2806 Contd. -2- EP2/F10.9.20. The HP all round, both high and low compression, is better, a better film of oil being maintained on the cylinder walls, in fact…

scan0088 Gear ratios, tyre sizes, and engine performance in pre-war and post-war cars.
View original record R.R. 235A (100 T) (S.H 159. 11-8-20) G. 2800 Contd. -3- EP2/F10.9.20. 4. Our tests show the gear ratio to be a very important item in this respect. In our comparative tests of a pre-war and post-war…

scan0089 Issues with pre-war pistons, broken induction pipes, and piston ring claps, suggesting a trial of aluminium pistons.
View original record To BY. from E. c. to BJ. c. to Hs. X856 E2/M22.11.23. PREWAR PISTONS & PISTON RING CLAPS. X. 834 X. 858 X. 2748 X.1506 In reply to your memo. BY11/P14.11.23., have not been able to put before Mr.…

scan0090 Causes of gumming pistons and the relative merits of various lubricating oils.
View original record To Hs. from R. c. to BJ. Wor. X858 R2/M1.10.26. RE. GUMMING PISTONS. X.3996 X.858 X.1588 X.8040 It is difficult to understand why pistons become gummed if it is not dependent on heat. At the same time…

scan0091 Issues caused by gas leakage past engine pistons and the development of an apparatus to test for it.
View original record To R. from Hs/ACL. c. to BJ. Wor. c. to RG. E. c. to DA. BY. X858 Hs/ACL1/LG12.10.26. TESTS ON GAS LEAKAGE PAST PISTONS. X8040 At various times we have encountered troubles on our different engines…

scan0092 Test report on engine air leakage with results tabulated against engine speed.
View original record contd :- -2- The amount of air used is measured by water replacement in a container having a calibrated gauge glass at the side. The action of the container is such that a small drop of pressure due…

scan0093 Engine leakage tests, observing variations with speed and planning further tests on rings and pistons.
View original record contd :- -3- It will be seen that the leakage falls as the speed increases. Other variations we have noted is with a cold engine when at 500 r.p.m. the leakage was nearly one cu.inch per stroke. This…

scan0094 Piston leakage, suggesting testing pressure at normal speed rather than leaks at various speeds.
View original record X858 To Hs. from R. c. to EJ. RG. BY. R1/104.10.26. RE, PISTON LEAKAGE. X.8040 X.858 I imagine that new pistons if well made are very gas tight until a certain pressure occurs on top of the piston,…

scan0095 Tests on gas leakage past pistons on a Phantom engine under various pressures.
View original record K858 To R. from Hs/ACL. c. to BJ. Wor. c. to RG. E. c. to DA. BY. Hs/ACL2/LG9.11.26. GAS LEAKAGE PAST PISTONS ON PHANTOM. We have carried out some tests to determine the leakage which took place past…

scan0096 Piston ring leakage tests, discussing the effects of speed, pressure, and potential 'gumming' issues.
View original record contd :- -2- The results of two speeds are given - 500 and 1000 r.p.m. - and it is interesting to note how the leakage per stroke is considerably less at the higher speed which we think is due to the…

scan0097 Graph plotting piston leakage against compression pressure for a 'New Phantom' engine at different RPMs.
View original record "NEW PHANTOM" PISTON LEAKAGE. ENGINE No. R.E. 25. (No 5 CYL) STANDARD "L" SECTION RINGS. JACKET TEMPERATURE. = 75°C. OIL TEMPERATURE = 60°C. LEAKAGE IN CU. INS PER STROKE AT ATMOSPHERIC PRESSURE…

scan0098 Temperature of the air under the foot-boards where the main switch is fixed.
View original record To BY. from EH. X3908 Chassis EM3/LG14.8.19. RE TEMPERATURE OF AIR UNDER FOOT-BOARDS. The temperature of the air in the position where the main switch is now fixed on the dash board is from 40 to…

scan0099 Thermometers, thermostats, and crankcase breather fumes for the 40/50 HP chassis.
View original record X.3908 To Bn. from R. Copy to CJ. c. to Hs. c. to Da. c. to By. R9/G4.2.20. X.3431. X.3763. X.3565. X.3563. RE PRESENT 40/50 H.P. CHASSIS. With reference to the present 40/50 H.P.? if we use the…

scan0100 Proposal for an experiment to vent engine breather gas directly to the open air to prevent it entering the cabin.
View original record X.3908 To Hs. from E. Copy to CJ. " " Bn. " " Da. " " BP. " " Ck. X.3908. RE BREATHER GAS FROM ENGINE. X.3431. ---------------------------------------------------------- It is proposed to carry the…

scan0101 Complaints and potential causes of fumes inside covered car bodies.
View original record X.3908. COPY. Hs. from EP. c. to Bn. c. to BY. c. to Da. C-12 EP11/F24.2.20. X.3908 RE. FUMES INSIDE COVERED BODIES. X.2448 X.3431 With reference to my complaint re. the above, I should be glad if you…

scan0102 Urgent response regarding a customer's complaint about fumes in the car body.
View original record Hs. [Strikethrough: Copy to Ry] X3908 EP/Thn5/F25.2.21. F.R. X3908 RE. FUMES IN THE BODY. With reference to the above, and our EP2/F1.2.21, we shall be pleased to hear from you quickly on this matter,…

scan0103 Requesting an experiment to redirect crankchamber fumes away from the vehicle body, based on a suggestion by Mr. Royce.
View original record R.R. 235 b (200 T) (S.F. 673, 22-5-19) G. 2376. X.3908 Bn4/W26.2.20. [strikethrough]To Der.[/strikethrough] from Bn. [strikethrough]cc to Mr.[/strikethrough] [strikethrough]c. to Dy.[/strikethrough]…

scan0104 Customer complaints about engine fumes entering covered bodies and proposing a solution.
View original record R R. 235A (100 T) (S H. 798. 10-12-20) G. 2947 X3908 To R. from ) Hs To E c. to CJ. c. to BN and BY. c. to EP and Da. c. to EWE. for R.R.Inc. Hs4/LG1.3.21. X 3908 FUMES IN COVERED BODIES. We…

scan0105 Potential non-standard additions and improvements for a trials car for the American Company.
View original record RR 235 a (100 T) (S.F. 846 6-8-19) G. 2460 X 3908 Extract from EP7/F4.3.20. X.3719. RE TRIALS CAR FOR THE AMERICAN COMPANY? It has occurred to us that there are several other items which we consider…

scan0106 Suggestion for the disposal of gases from the breather pipe by routing them to the carburetter.
View original record X-3908 To Hs. from Bn. c. to Ck. X 3908 RE DISPOSAL OF GASES FROM BREATHER PIPE. Bn2/W23.3.20. With reference to Mr. Royce's suggestion, I send you herewith copy of Sp2/HW/19320. You have suggested…

scan0107 Mr. Royce's suggestions for improving ventilation to resolve issues with hot footboards and engine fumes.
View original record R.R. 235 A (100 T) (S.F. 846 6-8-19) G. 2460 COPY Attached 23.3.20 To: Bn., Derby. From: Sp. Sp2/HW/19320. re HOT FOOTBOARDS. Lord Herbert Scott wishes me to advise you concerning some notes in a…

scan0108 Customer complaints about fumes in the car body and a proposed solution involving the crankchamber breather.
View original record X 8708 Hs. from EP. c. to Dy. c. to E. EP2/F1.2.21. Hs FEB 3 1921 RE. FUMES IN THE BODY. With further reference to the above, which I brought to your attention as a general complaint some time ago,…

scan0109 Customer complaints about fumes in car bodies and proposing a solution to modify the chassis.
View original record X 3908 Hs. from EP. c. to Da. c. to Dy. c. to Wor. c. to E. [STAMP] MAR 24 1921 RECEIVED EP35/P&A.3.81. x.3908 RE. FUMES IN BODIES. With reference to the trouble of fumes in the body which has been…

scan0110 Debiting work to a department and the process for handling disagreements.
View original record EP35/F23.3.21. -2- We consider that any work in connection with this should be debited to A.T.D. Will By please instruct accordingly and arrange for BP to issue an order number chargeable to this…

scan0111 Customer complaints about engine oil leaks and recommendations for improving crankchamber ventilation.
View original record X3908 FR F.R. Copy from EP. c.c. to by. c. to HS. EP1/F31.3.21. X3908 RE. OIL LEAKS FROM ENGINES. We still continue to receive complaints of oil leaks from engines, and in the cases referred to,…

scan0112 Temporary fitting to stop crankcase breather fumes entering the vehicle body, and the need for a permanent design.
View original record X.3908 To E.P. from Hs. c. to Da. c. to EY. Hs7/LG5.4.21. X.3908 FUMES IN BODIES. We have supplied you with one set of fittings in order to ensure that fumes from the crankcase breather are consumed…

scan0113 Internal memorandum regarding customer complaints about fumes entering car bodies.
View original record R.R. 235A (100 T) (S.H. 798. 10-12-20) G. 2947 [Handwritten] x3908 [Handwritten] A.T. [Strikethrough]Day.[/strikethrough] from EP. c. to Hs. c. to Hy. EP2/H6.4.21. x3908 RE. FUMES IN BODIES. With…

scan0114 Successful fix of a fume issue in a customer's car and the proposal to standardize the solution.
View original record X3908 H8 De. from EP. c. to Hs. c. to By. c. to Wor. c. to F. EP6/F14. RE. FUMES IN BODIES - MR.CLAREMONT'S CAR 21-TW. ------------------------------------------ Further to our EP2/H6.4.21, and…

scan0115 Points of oil leakage from engines and suggesting potential improvements.
View original record Hs. from EP. e. to Da. (struck through) e. to By. (struck through) c. to E. c. to Sft. (struck through) X3908 RECEIVED EP11/F15.4.21. F.R. RE. OIL LEAKS FROM ENGINES. This feature has been the cause…

scan0116 Proposal for connecting the breather and carburetter on the 40/50 engine to avoid fumes entering the body.
View original record To BY from DA. c. to HS. c. to TB (1 print). c. to RHO (1 print). X3908 DA2/CB16-4-21. [STAMP: RECEIVED APR 18] Re Proposed Connection between Breather & Carburetter. 40/50 Engine. Please receive…

scan0117 Proposal for a 'Goshawk' breather and oil filler to prevent engine fumes from entering closed bodies.
View original record R.R. 254a (100 T) (S & Ps. 1042-20) G. & P. Ltd. From E. c. to CJ. c. to Hs. c. to BY. c. to EP. c. to E.C. X.3908 7 E1/G19.4.21. X.3908 X.4235 RE "GOSHAWK" BREATHER AND OIL FILLER. Mr. Royce has made…

scan0118 Customer's complaint about engine fumes and the urgency to install a new pipe.
View original record x3908. F.R. Hs. E. to Da. EP/Thnl2/F21.4.21. x3908. FUMES IN BODIES. Further to our recent memos. regarding the above, we are now being pressed by Stanley-Johnson Esq., the owner of GO-BW, to cure the…

scan0119 Customer complaints regarding fumes in the car body and crankchamber breather, seeking approval for an experimental fix.
View original record E. from EP. c. to Hs. c. to Ba. c. to By. c. to CJ. X3908 A.T. EP2/F23.4.21. 23rd. April, 1921. RE. FUMES IN BODY, AND CRANKCHAMBER BREATHER. With reference to your E1/G.19.4.21, I am pleased to note…

scan0120 Temporary and a new scheme for dealing with engine fumes in car bodies.
View original record X3908 To Hs. from Da. Da6/G29.4.21. X.3908 RE FUMES IN BODIES. I have discussed the question of the temporary fitting which you made for connecting the breather to the carburetter intake and also the…

scan0121 Requesting clarification on the sufficient diameter for a copper pipe to ventilate an engine.
View original record To Hs. from Da. X3908 Da2/G3.5.21. X.3908 - RE 40/50 H.P. BREATHER. In referring to the apparatus for preventing fumes getting into the body the other day, I should have asked you to let us know, in…

scan0122 Remedying issues with fumes entering the vehicle body, suggesting modifications to the cut-out, silencer, and pedals.
View original record X.3908 Extract from EP/Thn;2/F28.6.21. X.3719. X.3908. Fumes in body trouble is serious. They propose discarding the cut-out. (It does not seem to be wanted here). A more free silencer should be used.…

scan0123 Extract from a letter discussing solutions for fumes entering the car body, particularly for American models.
View original record X.3908 Extract from EP/Thn6/H6.7.21. X.3719. RE CARS FOR AMERICA. Item 11. Fumes in Body. The following is an extract of one of Mr. Platford's letters with regard to the above:- "Springfield now…

scan0124 Standardising a breather from Springfield to solve fume issues in car bodies for the American market.
View original record X.3908 Extract from Hs7/LG6.7.21. RE CARS FOR AMERICA. X.3719. X.3908 Item 11 Fumes in Body. We are making a similar breather to the sketches received from Springfield. We think that the scheme is…

scan0125 Memo discussing the design and testing of a cast aluminum breather for covered bodies.
View original record Re breather Dear Hives. A breather that would permit one to breathe in covered bodies seems so necessary that we have made one or two in cast aluminum thus:- oil filler trumpet. Friger grips. Cap.…

scan0126 Letter with a technical drawing proposing a modification to a breather.
View original record Unfortunately it comes so close to the steering box that it is very difficult to attach it in service, which is what we want it for particularly. And how to clear everything in that busy corner is…

scan0127 Producing the present type of crankcase breathers while awaiting standardization of a new design.
View original record X3908 To BY. from Hs. c. to Sft. Hs5/LG11.7.21. X3908 CRANKCASE BREATHERS. We anticipate that we shall very shortly standard-ise the Breather having a vent lead to the outside of the chassis. We…

scan0128 Test results and recommendations for preventing crankcase fumes in the 40/50 chassis.
View original record S.H. 235A (100 T) (S.H. 798, 10-12-20) G. 2947 X3908 To R. from Hs. c. to CJ. c. to Rg. c. to E. c. to Da. c. to BY. Hsl/LG19.7.21. X.3908 - CRANKCHAMBER VENT IN 40/50 CHASSIS. We strongly recommend…

scan0129 Crankcase pressure, vent pipes, and the effects of lubricating oil dilution.
View original record contd. -2- Hsl/LG19.7.21. ------------ a .500" dia. vent pipe. The only trouble one can see we should be likely to get into if we increased the pressure in the crank-chamber would be that we should…

scan0130 Internal memorandum from Sft. to Hs. regarding the production status of parts for crankcase breathers.
View original record R.R. 255a (50 T) (S H. 986, 19-2-21) G. 3509 To Hs. To DY. [struck through] from Sft. x3908 SFT7/M15.7.21. CRANKCASE BREATHERS. With reference to your memo. Hs5/LG11.7.21. I beg to say that we are…

scan0131 Standardization of a proposed inexpensive vent for the 40/50 chassis crankcase.
View original record R.R. 235B (100 T) (S.H. 793. 10-12-20) G. 2948 X3908 To R. from Hs. c. to CJ. c. to E. c. to Da. c. to BY. Hs8/LG8.8.21. X3908 VENT FOR 40/50 CHASSIS CRANKCASE. During our last visit to Mr. Royce, we…

scan0132 Persistent oil leaks from bottom half crankchamber joints and proposing the addition of lugs and bolts as a solution.
View original record R.R. 285A 100 T) (S.H. 798. 10-12-20) G. 3947 X.3908 BY. from EP. c. to Hs. c. to E. EP12/H9.9.21. X.3431 - RE BOTTOM HALF CRANKCHAMBER JOINTS. X.3908 We are experiencing considerable trouble in…

scan0133 Car overheating issues in Switzerland and various tests and modifications to address them.
View original record X3908 AT 2. Hs. from EP. c.c. to BY. EP4/HB.10.21. A.T. X4394 Re. OVERHEATING. X3663 X3908 X766 With reference to the complaints of our cars overheating when in use in Switzerland during the recent…

scan0134 Investigation into the cause of 'sea-sickness' in covered cars, identifying exhaust fumes as the culprit.
View original record c. to [REDACTED] c. to [REDACTED] c. to [REDACTED] c. to Hs. [STAMP: RECEIVED] [STAMP: SB - SICKNESS] [STAMP: X3908] [HANDWRITTEN: X3908] LES/S/315.11.21. From investigations made by Mr. and R.C. we…

scan0135 Solutions for crankchamber fumes and ride comfort issues causing 'sea-sickness'.
View original record To BJ. from R. c. to CJ. PN. c. to Hs. EP. c. to BY. Wor. c. to LHS. X3908 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…

scan0136 The escalation process for obtaining a satisfactory explanation.
View original record contd. -2- R2/M20.12.21. ----------- If you cannot get a satisfactory explanationfrom EP., he should consult with Hs. If still unsatisfactory, it should then be brought to me. R.

scan0137 Solution for engine fumes on the 40/50 chassis by using a carburetter air inlet connection.
View original record X.3908 Extract from R7/G30.12.21 X.4219. (20) ENGINE FUMES ON 40/50 CHASSIS. X.3908 To deal with this matter I think that the carburetter air inlet connection is better than the breather type and it…

scan0138 Standardisation of chassis parts relating to the crankcase vent.
View original record R.R. 755 (5 H) (S.J. 291. 1k-10-21) G. 3037. X3908 COMPLETED 18.9.22. STANDARDISATION of CHASSIS PARTS. Date 4.9.22. X No. 3908 Description of Parts. CRANKCASE VENT. Drawing No. Part List Origin. To…

scan0139 Urgent internal memo regarding a customer complaint about a missing crankchamber fume device on Chassis 43-RG for Lord Rocksavage.
View original record VERY URGENT. V3908 re - Chassis 43-RG Lord Rocksavage Hs D/BP/HF2/PB14.11.22 We are in receipt of a Memo from Sales(Hn28/LH13.11.22), in which they state that Lord Rocksavage is disappointed to find…

scan0140 Standardization of a device for crankchamber fume extraction and its supply for Lord Rocksavage's car, chassis 43-RG.
View original record D/BP. from Hs. Y3908 Hs3/LG14.11.22. Re - Chassis 43-RG - Lord Rocksavage. With reference to your D/BP/HF2/PB14.11.22. The device for taking the fumes from the crankchamber into the carburetter has…

scan0141 Solution for excessive engine fumes by fitting a breather pipe from the crankcase to the hot air pipe.
View original record R.R. 199 (250T) (SD676 19-7-17) MP 180865 V3908 To R.S. & Hm. C. to CJ. C. to DJ. C. to Wox. C. to Hs. C. to EP. C. to M. C. to TN. Hm5/W26.1.23. Re Breather Pipe from Crankcase to Hot Air Pipe. A car…

scan0142 Requesting a blueprint regarding the breather pipe from the crankcase to the hot air pipe for a 40/50 chassis.
View original record X.3908 To ns. from E. c. to BY. Hm. E3/M27.2.23. 40/50 CHASSIS. RE. BREATHER PIPE FROM CRANKCASE TO HOT AIR PIPE. X.3908 With reference to memo. Hm5/26.1.23., of which you have a copy, we do not…

scan0143 Arrangement of a breather pipe from the crankcase to the hot air pipe for the 40/50 model.
View original record X3908 To E. from Hs. Hs1/LG2. 3. 23. RE. BREATHER PIPE FROM CRANKCASE TO HOT AIR PIPE. 40/50. X3908 We attach herewith print of this arrangement. A print of this was sent to W.W. with the…

scan0144 Complaints about excessive heat in the vehicle's cowl and driver's footwell.
View original record ll X3708 Oy5-W-75025 July 30, 1925. Mr. Claude Johnson, Rolls-Royce, Limited, London, England. (Copy for attention of Mr. Royce Mr. Platford Mr. Hives ) Dear Sir: Heat in Cowls Complaints on this…

scan0145 Complaints of excessive heat in the vehicle's cowl and footwell, with proposed solutions.
View original record -2- (b) Complaints of passengers of general heat in the cowl, and principally of hot feet (when the complaints are analysed). We have seen a proposed English standardisation sheet for leather flaps in…

scan0146 Modifications to reduce heat and noise, such as a double dashboard, rubber floor mats, and a shorter gearbox undersheet.
View original record -5- Oy5-W-78023 (3) (Continued) at a point closer to the wheel than formerly, leaving the circulation of air around the crankcase unobstructed for the sake of keeping the oil cool and the engine…

scan0147 Suggestion for routing an exhaust pipe and arranging a vaporizer, requesting comments from Mr. Royce.
View original record Oy5-W-75023 -4- (7) Bringing exhaust pipe down at front end of engine as far as possible from the dash. This is like the Marmon, Buick four and Hupmobile. A single large boiler for the vaporizer pipe…

scan0148 Drawing of a corrugated rubber mat for the front floorboard.
View original record PROJECTING TONGUE OF CATCH REMOVED USE SCREWDRIVER TO OPEN. N. SR. SHEET. FLAT BLACK PUSH FASTENERS. ASBESTOS SHEET STILL FITTED AS BEFORE TO UNDERSIDE OF BOARDS. CORRUGATED RUBBER MAT FOR FRONT…

scan0149 Hand-drawn diagram showing a double dash arrangement for Mr Thorsen's car.
View original record AIR ENTRANCE HOLES. PASSAGE OF COOL AIR. 1/16 AL. 3/16" AIR SPACE. 2 BA. c'sunk SCREWS. DOUBLE DASH ARRANGEMENT ON MR THORSEN'S CAR Oy July 28 '23

scan0150 Hand-drawn scheme for splash guards to replace ventilated under-sheets.
View original record SCHEME FOR SPLASH GUARDS TO REPLACE VENTILATED UNDER-SHEETS. By Jur 28

scan0151 Proposed aluminum guard to prevent hot drafts through the pedal slots, replacing the flywheel guard.
View original record PROPOSED GUARD TO PREVENT HOT DRAFT THRO' PEDAL SLOTS AND TAKE PLACE OF FLYWHEEL GUARD GUARD OF 1/16" ALUMINUM TESTED 2000MILES IN HOT WEATHER WITH GOOD RESULTS by JULY 28

scan0152 Causes and potential solutions for fumes entering the car's interior.
View original record X. 3908 To HM. EP. HS. from R. c. to CJ. BJ. OY. LHS. RG. C. PN. R2/M29.3.24. FUMES IN CARS. X. 3908 Unburnt petrol, or roasted lubricating oil smoke half burnt, has carbon monoxide, which has no…

scan0153 Confirming the chassis number for a car fitted with the Argen Heating Scheme and arranging a road test.
View original record To BY. from Hm. C. to Hs. C. to EP. V3908 Hm/WW8/W29.4.24. Heating of Bodies. With reference to your BY9/H28.4.24, we confirm the information given to you by telephone this morning that the chassis…

scan0154 Issue of fumes in car bodies and arranging for a trial on experimental cars.
View original record X3908 Hs. EP3/Hl1.6.24. re. Fumes in Bodies. During my last visit to London I was able to discuss several points with Sp, who was investigating the question of fumes in bodies, and I attach a copy of…

scan0155 Investigation into the cause and solution for exhaust fumes entering closed car bodies, identifying air suction as the root problem.
View original record L.H.S. Copy to E.P. EXHAUST FUMES IN CLOSED BODIES. In conversation with E.P. yesterday I learnt there have been several complaints of the existence of exhaust fumes in covered bodies. For some time I…

scan0156 Solutions to prevent exhaust fumes from entering the car body through window 'falls'.
View original record -2- With regard to the other point mentioned by E.P. that exhaust fumes come up the window "falls", I find this might apply to Cabriolets and All-weather bodies in which the windows are made to fall…

scan0157 Methods to eliminate fumes and smell from oil dripping on the 40/50 HP model.
View original record 13908 H1/EP/25.6.24. S/W. Hs. from H. Re:- SMELL - 40/50 h.p. With regard to recent experiments carried out by W. to eliminate fumes and smell reaching front or rear seat passengers. The Sales…

scan0158 Issue of engine exhaust fumes entering the car body and proposing a swan neck exhaust as a solution.
View original record To Hm. from R. c. to CJ. BJ. Hs. [Handwritten: X3908] R4/M1.6.25. RE. ENGINE EXHAUST FUMES IN BODY. X.8230 X.3436 X.3908 I saw BJ. on this subject, and admitted that I had noticed the same fault, the…

scan0159 Fumes entering the car bodies on the Phantom and 20 HP models.
View original record R.R. 493A (50 H) (D.D. 31, 12-6-25) J.H.D. EXPERIMENTAL REPORT. Expl. No. 43908 REF: Hs10/LG14.10.25. To R. from Hs. c. to CJ. BJ. c. to RG. E. c. to DA. BY. c. to Wor. FUMES IN BODIES. 48320 Both on…

scan0160 Fumes in car bodies and the plan to supply a drawing for a casing around the gear change system.
View original record To Hs. from R. c. to CJ. BY. c. to AJS. 43908 FUMES IN BODIES. R3/M24.10.25. X. 3908 X. 8320 X. 5320 With reference to the fumes in bodies, AJS. will supply a drawing shewing the boxing in under the…

scan0161 Proposed modification to prevent hot air leaks into the coachwork via the gearbox gate mechanism.
View original record To Hs. from AJS. c. to BY. LHS. DA/EV. X3908 AJS1/M24.3.26. GAS LEAKS THROUGH INDIA FLOORBOARDS. X.5500 X.3908 X.5310 We understand that you have again taken up the matter of hot air leakage into the…

scan0162 Revised scheme to prevent gas leaks through India floorboards, which improves gearbox maintenance.
View original record To Hs. from AJS. c. to BY. LHS. c. to DA/EV. X3908 AJS1/M25.3.26. GAS LEAKS THROUGH INDIA FLOORBOARDS. X.3908 X.5500 X.5310 Referring to our AJS1/M24.3.26., will you kindly substitute the scheme…

scan0163 Causes and potential solutions for overheating in the rear compartment of Phantom cars.
View original record To Hs. from DA/EV. c. to LHS. E. 73908 DA/EV1/M14.7.26. OVERHEATING IN THE INTERIOR OF CARS. X.3003 X.819 Xr822x X.3809 X.8230 For some while now the C.S.C. has brought to our notice complaints of…

scan0164 Request for an experiment to measure the floor temperature of a closed car and identify heat sources.
View original record contd :- -2- SEE ORIGINAL FOR SKETCH. In order that we may further discuss the subject with R. we would like to have your views, and suggest that it might be wise for you to try experimentally to…

scan0165 Test report on interior overheating in Phantom cars caused by heat radiation from the silencer.
View original record To R. from Hs/AJL. c. to BJ. WOR. c. to E. DA. c. to EY. OVERHEATING IN THE INTERIOR OF PHANTOM CARS. We have carried out tests on the above. The tests were carried out on a standard Phantom chassis…

scan0166 Recommendations for heat insulation of floorboards using asbestos lagging to shield from silencer heat.
View original record Contd. -2- Hs/AJLL/T9.8.26. at present. Better results than those obtained by lagging the silencer can be obtained by a fixed sheet asbestos to the underside of the rear compartment floorboards. In…

scan0167 Customer complaints about overheating in the interior of Phantom cars and a proposed solution.
View original record x3808 To Hs. from BJ. BJ8/D25.8.26. Overheating in the interior of Phantom Cars. During the recent hot weather this matter has received a good deal of attention owing to the complaints from customers.…

scan0168 Temporary and permanent solutions for heating issues in the back of closed 'New Phantom' cars.
View original record E.L. Sg5/RW/25.8.26. Re: Heating in the back part of closed 'New Phantom' Cars. Referring to the attached papers, this matter, in accordance with your request, was discussed at the Sales Conference…

scan0169 Methods to insulate the coachwork from exhaust pipe heat.
View original record PN2/DN23.8.26. TO BJ c. to LHS c. to CWB c. to H.O. HEATING OF CARS. FROM P.N. There appears to be a variety of means adopted by different coachbuilders with a view to preventing the heat from the…

scan0170 Issue of overheating in New Phantom Cars due to heat from the floor-boards.
View original record To PN. from BJ. c.c. to LHS. c.c. to CWB. c.c. to HO. Heating of Cars. With reference to PNB/DM23.8.26, this is a serious matter. There is no doubt that there is considerable discomfort inside the…

scan0171 Overheating in the interior of Phantom cars and the challenges of fitting exhaust lagging.
View original record To B.J. from Hs. X3908 Hs6/LG30.8.26. Overheating in interior of Phantom Cars. X8230 Answering your BJS/D25.8.26. There are certain difficulties in the way of us fixing exhaust lagging to the chassis…

scan0172 Investigating heat in the rear compartments of 40/50 HP cars and a coachbuilder's proposed solutions.
View original record X3908 S/W. Hs. Sg/Hn8/MH31.8.26. Heat in Rear Compartments of 40/50 H.P. Cars. You will no doubt be interested to learn that following your recent report of your investigations into this trouble, we…

scan0173 Letter suggesting the chassis builder is responsible for the heat in the car's interior.
View original record -2- We would respectfully suggest that this position is really the concern of the Chassis builder and, moreover, we think you will agree that although the asbestos underneath the floor may do…

scan0174 Resolving issues with unbearable heat from the footboards of closed bodies on Phantom chassis.
View original record X3908 "WH" Derby Copy to "Hs" Derby Ps6/JP.1/9/26 RE CLOSED BODIES ON PHANTOM CHASSIS. We have had several complaints of unbearable heat from the rear footboards of closed cars, and this inspite of…

scan0175 Overheating in the interior of Phantom Cars.
View original record Hs X3908 To R. from BJ. Copy to Hs. Overheating in the Interior of Phantom Cars. This matter was considered by a Sales Conference recently and after the discussion PN wrote to me as attached, which I…

scan0176 Solutions for overheating interiors in Phantom cars, focusing on insulation and collaboration with coachbuilders.
View original record PN1/DN7.9.26. TO B.J. c. to Sg. FROM P.N. Re Over-Heating in interior of Phantom cars. We would like R. to realise fully the considerable amount of trouble we have at times in satisfying people with…

scan0177 The unusual experience of both rear tyres being punctured simultaneously.
View original record - 2 - We have had the unusual experience of both rear tyres being punctured at the same moment. These were slow punctures and they had the effect of making it impossible to steer the car straight. It…

scan0178 Private memo regarding complaints and the overheating of inside bodies.
View original record Private "Hs" Derby X3908 Ps7/JP.9/9/26 Re:COMPLAINTS. No doubt you have noticed of late that I have sent you special copies of complaints, which have been made by me to London. I have done this in…

scan0179 Reduction of interior heat in Phantom cars.
View original record Hs X3908 To R. from BJ. Copy to Wor. Copy to Br. Copy to Hs. Interior Heat. Phantom Cars. BJ13/E16/9/26 I attach copy of Sg13/M14/9/26 which I think may interest you to see, as I understand you are…

scan0180 Cost and liability for fitting asbestos sheeting to address interior heat in 'Phantom' cars.
View original record COPY. Sg13/M14/9/26 Re: Interior heat 'Phantom' Cars. Referring to the instructions sent out to the Coachbuilders regarding the fitting of asbestos sheeting to the front floorboards, we have now…

scan0181 Use of Asbestos and 'Euralite' for heat insulation under the floorboards of a 'Phantom' car.
View original record S/W. Hs. X3908 Sg/M/25.9.26. Re: Heat in 'Phantom's - back of Car. You will recollect your recent recommendation in regard to Asbestos underneath the floorboards. Certain of the Coachbuilders have…

scan0182 Letter advising against using 'Euralite' as a substitute for asbestos under the floorboards of 'Phantom' cars due to its unsuitability for heat resistance.
View original record COPY. Sg5/M/17926. 17th September, 1926. Messrs Hooper & Co, Ltd., St. James's Street, S.W.1. Dear Sirs, Re: Asbestos under floorboards of 'Phantom' Cars. We have been given to understand that your…

scan0183 Letter from coachbuilder Hooper & Co. regarding asbestos and 'Euralite' insulation trials on 'Phantom' cars.
View original record COPY. TC/C. HOOPER & CO, LTD., 54, St. James's Street, S.W.1. 23rd September, 1926. Messrs Rolls-Royce, Ltd., Conduit St, W.1. Dear Sirs, Asbestos under floorboards of 'Phantom' Cars. In reply to your…

scan0184 Proposal to resolve a heating complaint by covering the rear silencer with an asbestos and tin plate jacket.
View original record S/W Hs. X3808 C10/C27.9.26. I understand that Paris, in connection with a serious complaint of heating inside the rear of the car, after attending to the floor boards and getting them properly fitted,…

scan0185 Alterations to a car body and concerns about its durability on Continental roads.
View original record W/S. To C. from Hs/Rm. X3908 Hs/Rm4/LG28.9.26. With reference to C10/C27.9.26. We quite believe that the alterations you mention as having been carried out by the Paris Depot, will have a beneficial…

scan0186 Coachbuilder Hoopers' use of Euralite material for body alterations.
View original record W/S To Sg. from Hs/Rm. X3908 Hs/Rm3/LG28.9.26. With reference to Sg7/M25.9.26. We consider that if Hoopers are satisfied with [XXXX over word] the results they obtain with Euralite, we should not…

scan0187 Covering memo regarding interior heat in 'Phantom' cars.
View original record X3908 To R. from Bj. Copy to Ner. Copy to BY. Copy to Hs. Interior Heat 'Phantom' Cars. BJ3/E28/9/26 Referring to your R2/M18/3/26 I am enclosing herewith for your information copy of memorandum…

scan0188 Charges for asbestos floorboards and pipe jacketing for interior heat in 'Phantom' cars.
View original record COPY. B.J. Re: Interior Heat 'Phantom' Cars. Referring to R2/M18/9/26. - we were far from satisfied that £6-6-0 was a reasonable charge for Asbestos under floor-boards; we took the matter up with…

scan0189 Causes and solutions for the overheating of car bodies, particularly in Phantom models.
View original record H.L. (Copy to LHS., C., PH. & Sp.) OWB/GB/21.9.26. Overheating of Car Bodies. This matter has been very much to the fore during the past summer and the matter has been fully discussed and ventilated.…

scan0190 Overheating bodies, discussing the use of pure asbestos versus an asbestos mixture for floor linings.
View original record S/W Hs. X3908 C14/C30.9.26. Overheating of Bodies. ----- Thanks for your Hs/RM/LG28.9.26, contents of which we have duly noted. We are raising the point as to whether Ps. is using pure asbestos or the…

scan0191 Querying the procedure for authorising chassis design alterations by various depots, citing a specific example from Paris.
View original record To Wor. from BJ. [strikethrough] To BY from BJ. [strikethrough] To Hs. from BJ. X3908 [handwritten] BJ19/E4/10/26 Please consider what is and what should be the procedure in regard to any alterations…

scan0192 Potential issues with a silencer lagging modification, including stone damage and fouling other components.
View original record To B.J. from Hs. c. to Wor. c. to BY. X3908 (handwritten and underlined) MODIFICATIONS TO SILENCER TO PREVENT HEAT AFFECTING BODIES. [Handwritten notes: X390-8 (struck through) X8230 / X3003] During…

scan0193 Query about testing an asbestos and tin insulation scheme around the exhaust to prevent overheating in car bodies.
View original record S/W By RECEIVED 21 OCT 26 X3908 C9/C20.10.26. Overheating in Car Bodies. Will you please let me know if you are doing anything to test the scheme of putting asbestos encased in tin round the exhaust,…

scan0194 Scheme from Paris and the importance of proper floorboard fitting by coachbuilders to prevent body fumes.
View original record W/S. X3908 C. from Hs/Rm. Hs/Rml/T23.10.26. With reference to C9/C20.10.26. We have as yet received no drawing of the scheme recently got out by Paris so that we have not been able to test it…

scan0195 Methods to prevent heat from coming through the rear foot-boards of vehicles.
View original record S/W X3908 C7/C13.11.26. Re HEAT IN REAR FOOT-BOARDS. With reference to your Hs/RM1/T23.1026, we quite agree that we ought to insist always upon the Coachbuilders improving the fitting of their…

scan0196 Proposal for a heat shield for the Phantom's exhaust silencer to address complaints of excessive heat.
View original record To BY. from DA. c. to BJ. Hs. X3908. DA2/M26.11.26. PHANTOM - HEAT SHIELD FOR EXHAUST SILENCER. X. 8230 X. 3908 Herewith we send N.sch. 2311 shewing the proposed shield between the silencer and the…

scan0197 Design to mitigate heat under the rear footboards on the Phantom model.
View original record To C. from Hs. X3808 Hs7/LG29.11.26. HEAT UNDER REAR FOOTBOARDS ON PHANTOM. X8500 X3908 C7/C13.11.26. We have today received a design from WW. which follows closely the scheme which they have used in…

scan0198 Design of flexible brackets for a heat shield on an EAC.7 silencer.
View original record To BY. from DA. c. to BJ. Hs. X3908. DA1/M5.5.27. X.7230 X.3908 HEAT SHIELD FOR EAC.7. SILENCER. We thank you for your sch.915., and although we agree that it would clear the various obstructions, we…

scan0199 Complaints about over-heating in the rear of Phantom cars and the urgency to find a solution.
View original record S/W Hs. Over-heating in Rear Part of Phantom Cars. ----- It is rather urgent that we should have some method of over-coming these complaints when we get them. Now that the warm weather has commenced…

scan0200 Test report on a rear silencer heat shield to reduce overheating in the interior of Phantom cars.
View original record To R. from Hs/AJL. c. to BJ. Wor. c. to E. Da. c. to BY. Y3906 Hs/AJL1/LG25.5.27. OVERHEATING IN THE INTERIOR OF PHANTOM CARS. 48830 Rear silencer heat shield - N.sch.2311. Tests have been carried out…

scan0201 Adoption of a heat shield and the continued necessity for fitting sheet asbestos on floorboards.
View original record contd :- -2- omitted lagging the top half of the front portion. It should be remembered that the adoption of this heat shield does not delete instructions circulated to coachbuilders concerning the…

scan0202 Clarifying a misunderstanding with the Sales department regarding the general application of a standardized rear silencer baffle.
View original record HS. X.3908 BY9/H. 8.6.27. BAFFLE OVER REAR SILENCER. On the standardization sheet under which the above proposal has been sent out for signature, the reason for the standardization has been given "to…

scan0203 Querying the recommendation of fitting a baffle on the silencer for both Open and Closed 40/50 HP Chassis models and the short test mileage.
View original record X3908 This was returned to us attached to your reply Hs/Rm1/LG15.7.27. Sg. S/W. ✓ Hs. Copy to DI. Sg11/W/13.7.27. Re: Baffle on Silencer to reduce heat in body. 40/50 HP. Chassis. to Referring to the…

scan0204 Issues with autovac tank temperature causing petrol vaporization and starvation problems on Alpine passes.
View original record X3908 To R. from Hs/Rm. c. to BJ. Wor. c. to RG. DA. c. to BY. W. Hs. absent. Hs/Rm3/LG19.7.27. TEMPERATURE OF AUTOVAC TANK. X3579 As pointed out in Hs/AJL2/LG14.6.27., if we maintain the radiator…

scan0205 Standardisation of a baffle on the silencer to reduce heat in the car body.
View original record RR 755 REVISED (10H) (DE 649 9-12-26) BM. 2/1187. HS V3908 COMPLETED 20/7/27. STANDARDISATION of CHASSIS PARTS. Date 25.5.27 Description of Parts. BAFFLE ON SILENCER TO REDUCE HEAT IN BODY. Origin. To…

scan0206 Standardisation report for a chassis part.
View original record STANDARDISATION of CHASSIS PARTS (1). The number of the first chassis on which the new part will be fitted. 175th in D2. (2). Date when the chassis will be handed to test. 2.10.27. (3). Cost of…

scan0207 Returning a signed standardisation sheet regarding a baffle on the silencer to reduce heat, specifically for closed cars.
View original record To Hs. from BJ. Standardisation Sheet. BJ11/E20/7/27 [Handwritten annotation] X8230 I return herewith Standardisation Sheet No.3908. 8230/8830, Baffle on Silencer to reduce heat in body, which I have…

scan0208 Request for two louvred panels to test the ventilation of the 10-EX front driving seats.
View original record To RHC. from Hs/Rm. X3908 Hs/Rm5/LG2.12.27. Y8830 VENTILATION OF 10-EX FRONT DRIVING SEATS. We wish to carry out some tests on the temper-ature of the driving seats of 10-EX. Will you please supply us…

scan0209 Gas-tightness for the 20 HP gear quadrant and modifications to the gear and brake levers.
View original record BY. from DA. c. to BJ. Hs. +3908 DA3/M16.6.28. 20 HP. GEAR QUADRANT AND GAS-TIGHTNESS. X.5430 X.3908 X.5420 With reference to the question of keeping hot air fumes etc. from coming up through the gear…

scan0210 Letter regarding complaints of a strong petrol smell in closed body cars, potentially caused by the vacuum tank overheating.
View original record Hs. Derby. C. to Hm. Derby E.P. Whr. London. X.3908 Pt.2/FM-27/4/28. Several times lately we have had complaints of a strong smell of petrol inside cars having closed bodies. This is quite a distinct…

scan0211 Ordering of forgings for a 20 HP crankshaft.
View original record To Da. from E. c. to EH. c. to EFC. X.3208.-RE 20 H.P. CRANKSHAFT. We send you herewith drawing No. Lec. 1060 giving you sufficient information to enable the crankshaft forgings to be put on order. We…

scan0212 Print for a 20 HP crankshaft.
View original record To Mr. Coverley. from EFC. EFC1/T11.3.19. 11th March 1919. X.3208 - 20 H.P. CRANKSHAFT Herewith please receive print of LeC.1060 in connectiom with the above. EFC.

scan0213 Confirming instructions have been received for several 20 HP parts which are now being made.
View original record X4221 3 To R. from EH. c. to C.J. c. to N. c. to E. c. to Ds. EH7/LG25.7.19. 25th. July 1919. With reference to our memo EH1/LG24.7.19., showing the position of 20 HP. parts, we find we have…

scan0214 Adding a retard ignition timing mark to the flywheel, and omitting the advance mark.
View original record R.R. 235 B (200 T) (S.F. 674. 22-5-19) G. 2376. X4221 EH. from BY. CR BY2/P20.8.19. TIMING OF ENGINE MARKING ON FLYWHEEL. X.3520 Referring to your EH3/LG2619, copy of which you recently supplied me…

scan0215 Applying the die-cast crankshaft oil cap design from Eagle engines to the 20 HP engine.
View original record R R. 235 s (200 T) (S F. 674 22.5-19) G. 2376 To DA. from E. Copy to CJ. " " BN. " " EH. " " EFC. E3/G22/8/19. 3208 (crossed out) X. 3632 RE DIE CAST CRANKSHAFT OIL CAPS. I am informed by Mr. Stent…

scan0216 The required shortening of the 20 HP crankshaft nose due to crankcase alterations.
View original record To DA. from E. Copy to CJ. " " BN. " " EH. " " EFC. RE 20 H.P. CRANKSHAFT. X.3208. With reference to the 20 H.P. Crankshaft and the alterations now being completed to the crankcase, would you kindly…

scan0217 Parts fitted to a 'Goshawk' engine for testing.
View original record X3208 To EFC. from RHC. c. to Hs. Hs4/LG20.9.20. X.3481. RE "GOSHAWK" ENGINE. The above engine has been placed on test and has been fitted with the following parts. X.3536. - Crankcase & Bearings.…

scan0218 Extract detailing the cause of oil leaks in the 'Hoshawk' engine crankshaft.
View original record X3208 Extract from Hs2/LG28.9.20. X.3481. RE "HOSHAWK" ENGINE. ------------------------- X.3536. X.3208. We find that the reason the oil leaks from the front and rear end of the crankshaft is because…

scan0219 Patent by Dr. F.W. Lanchester for a combined damper and crankshaft pinion.
View original record To R. from Hs. c. to BJ. Wor. c. to E. BY. X4221 Hs6/LG24.2.27. CRANKSHAFT DAMPERS. X634 We notice in 'The Motor' 22.2.27 that Dr.F.W. Lanchester has obtained a patent for a scheme of combined damper…

scan0220 Mr. Lanchester's patent for a crankshaft damper and its relation to previous company designs.
View original record BYO from R. c. to BJ. Hs. c. to Mr. Claremont. 4221. R3/M11.5.27. MR LANCHESTER'S CRANKSHAFT DAMPER. X.634 X.4221 Regarding Mr. Lanchester's patent of the combined halftime gear and damper flywheel,…

scan0221 The revised 'Goshawk' design, sending drawing LeC.1310 for the new light chassis crankshaft.
View original record To Da. from E. c. to CJ. c. to Hs. c. to EFC. c. to By. X4221 E1/G23.11.20. X.4221. RE REVISED "GOSHAWK". We send you herewith drawing No. LeC.1310 giving particulars of the crankshaft for the new…

scan0222 Mr. Royce's expectation for the Goshawk II flywheel and clutch plates to be manufactured from cast iron.
View original record X 4221 COPY To. DA. from E. Copy to C.S. [CROSSED OUT TEXT] " " EPC. ES/D2/4/21. X4221 RE "GOSHAWK II" - CAST IRON FLYWHEEL. Referring to the flywheel, clutch pressure plate, and stationary plate for…

scan0223 Material change for the Goshawk II engine's flywheel to cast iron.
View original record To HV. from R. Copy to C.J. " HS. " BA. " EFC. " HH. X4221 COPY. RECEIVED R1/GS/4/21. X4221 / RE "GOSHAWK II" - CAST IRON FLYWHEEL. In consideration of the fact that we shall be making our own…

scan0224 List of modifications to the 'Goshawk II' flywheel casing and flywheel pointer.
View original record X4221 COPY to C.B. H.S. * R.P.C. from E. Hs APR 13 1921 RECEIVED El/G11/4/21. X4221 HS "GOSHAWK II" - FLYWHEEL CASING, AND FLYWHEEL POINTER. We send you herewith drawing Loc.1381 dealing with the…

scan0225 On a design issue with die-casting the crankshaft oil caps for the Goshawk II engine.
View original record X4221 COPY. To BA from E. Copy to Ed. HS. BY. E.O. ES/G13/5/21. X4221 "GOSHAWK II" - CRANKSHAFT OIL CAPS. You will no doubt recollect that it was proposed that the ribs on the crankshaft oil caps…

scan0226 Outlining modifications to the 'Goshawk II' flywheel casing, as detailed in drawing LoC.1437.
View original record X4221 To BY. from R. Copy to [illegible crossed-out text] EPL. X4221 RE "GOSHAWK II" FLYWHEEL CASING. Herewith please receive drawing LoC.1437 showing modifications to "Goshawk II" flywheel casing.…

scan0227 Increasing the crankshaft spring drive unit size on the Goshawk 11 engine to address torsional effects.
View original record To Hs. from E. c. to CJ. c. to Wor. c. to BY. c. to Da. X4221 E1/G13.9.21. X.4221 - RE. GOSHAWK 11. CRANKSHAFT. Referring to Goshawk 11. crankshaft, the front end of the crankshaft which is…

scan0228 Experiments with the Goshawk 11 crankshaft friction damper to resolve noise and vibration issues.
View original record K.R. 285A (100 T) (S.H. 798, 10-12-20) G. 2947 To T. from Hs. c. to CJ. c. to E. c. to BY. c. to Da. c. to EP. Y4221 COPY. MADE AT CROXLEY Hs7/LG15.9.21. Y4221 GOSHAWK 11. X.4219 We have carried out…

scan0229 With a sketch providing machining instructions for the 'Goshawk II' crankshaft.
View original record X4221 FC SEP 16 1921 BY/Shn1/DB.16.9.21. To RHC. from BY/Shn. c. to EFC. c. to Srt, c. to Wd, c. to Mr Broome. RECEIVED. X.4221 - "GOSHAWK II" - CRANKSHAFT. In accordance with Mr Royce's requirements…

scan0230 Request for torsional deflection data on the Goshawk 11 crankshaft and details on its spring drive.
View original record Hs. from E. c. to CJ. c. to Wor. c. to BY. X4221 E5/G16.9.21. X.4222 - RE GOSHAWK 11. CRANKSHAFT. X.4221. Would you kindly note Mr. Royce would like you to load up the Goshawk 11. crankshaft…

scan0231 Drawings for a new crankshaft pinion spring drive for the Goshawk 11 engine.
View original record X4221 To Da. from E. c. to CJ. c. to Wor. c. to BY. c. to Hs. E1/G21.9.21. X.4222 - RE GOSHAWK 11. CRANKSHAFT SPRING DRIVE. X.4221 We send you herewith drawings LeC.1449 and LeC.1450 shewing the…

scan0232 Deflection test on a Goshawk 11 crankshaft.
View original record To R. from Hs. c. to CJ. c. to E. c. to Da. c. to BY. c. to EP. c. to Wor. X4221 Hs/LG22.9.21. X.4221 - DEFLECTION TEST ON GOSHAWK 11. CRANKSHAFT. We have carried out this test on the engine which was…

scan0233 Confirmation of a telegram regarding the flywheel diameter for the Goshawk Two.
View original record X4221 CONFIRMATION OF TELEGRAM TELEPHONED TO CHICHESTER. 1st October, 1921. [Handwritten signature] ROYCAR DERBY: X4221 HIVES WILL EIGHT POINT ONE FIVE OUTSIDE DIAMETER SLIPPER FLYWHEEL BE LARGE…

scan0234 The appropriate Slipper diameter for the Goshawk 11, pending tests with heavier cast iron pistons.
View original record E. from Hs. X4221 GOSHAWK 11. Hsl/LGl.10.21. With reference to your telegram asking whether 8.15" diameter Slipper would be large enough for Goshawk 11. At present we are not able to say. We are…

scan0235 Sending drawing LeC.1458 for the Goshawk 11 spring drive, slipper flywheel, and temporary wheelcase.
View original record To Da. from E. c. to CJ. c. to Wor. c. to Hs. c. to BY. X4221 E2/G5.10.21. X.4244 - RE GOSHAWK 11. SPRING DRIVE ETC. X4221 X.4222 We send you herewith drawing LeC.1458 shewing the spring drive and…

scan0236 Goshawk 11 crankshaft pinion spring drive, slipper flywheel, and related alterations to future crankcases.
View original record To Da. from E. c. to CJ. c. to Wor. c. to Hs. c. to BY. X4221 E1/G6.10.21. X.4244 - RE GOSHAWK 11 CRANKSHAFT PINION SPRING DRIVE X4221 X.4222 AND SLIPPER FLYWHEEL. With reference to the scheme…

scan0237 The Goshawk 11 crankshaft pinion spring drive, advising that scheme LeC.1449 is superseded by scheme LeC.1458 with a slipper flywheel.
View original record XL4221 To BY. from E. c. to Hs. E1/G8.10.21. GOSHAWK 11. CRANKSHAFT PINION SPRING DRIVE. X.4222 X.4221 It should be understood that nothing more should be done with Spring Drive LeC.1449 now that we…

scan0238 Modifications to the Goshawk 11 wheelcase, gear, and fan.
View original record To Da. from R. c. to CJ. c. to Wor. c. to Hs. c. to BY. X4221 E6/G13.10.21. X.4233 X.4237 - RE GOSHAWK 11. WHEELCASE AND GEAR AND FAN. X4221 We send you herewith drawings LeC.1461/2 dealing with the…

scan0239 Alterations to the fan, radiator, and cowling as per Mr. Royce's instructions.
View original record R.R. 235B (100 T) S.H. 89, 22-7-20 G 2769 contd:- -2- E6/G13.10.21. -------------- 2.BA washers. A larger fan has been shewn in accordance with Mr. Royce's instructions, for the radiator, and the…

scan0240 The design considerations for a crankshaft damper operating at high speeds.
View original record X.4221 17.10.21. Extract from R9/G17.10.21. X.4219 CRANKSHAFT DAMPER. X.4221 We understand that the period which requires damping is at a very high speed. This, therefore, only requires a very small…

scan0241 Oil leak on a Goshawk 11 crankshaft, with investigation instructions from Mr. Royce.
View original record X4221 To Hs. from C.L.Jenner. 12.11.21. GOSHAWK 11. X.4221. Will you please let us know if the second chassis has an oil leak at the rear end of the crankshaft. Mr. Royce would like you to investigate…

scan0242 Authorising Vickers to proceed with producing dies for the Goshawk 11 crankshaft following modifications by Mr Royce.
View original record Wd. from BY. (Struck through) C. Hs. c. Hs. c. Mr Shelton. (Struck through) C. CJ. (Struck through) X4221 (Handwritten) RECEIVED 14 DEC 1921 (Stamped) BY1-P13.12.21. GOSHAWK 11. CRANKSHAFT. X4221…

scan0243 Technical report on issues with the Goshawk II chassis, including brakes, water loss, oil filter, and over-oiling.
View original record To E. From Hs. c. to CJ. c. to Du. c. to EF. c. to HY. c. to Wor. GOSHAWK II. There are one or two points in connection with this chassis which we have still to get right. BRAKES. The trouble we are…

scan0244 Clutch experiments comparing standard Ferobestos with Ferodo bonded asbestos.
View original record Contd:- -2- X 4244 Hsl/LG12.1.22. ------------ CLUTCH. We have tried some of the experiments instructed for the clutch. We have not found anything better than the standard clutch with Ferodo bonded…

scan0245 On tests to resolve over-oiling in the Goshawk 11 engine, focusing on the inlet valve guides and rocker mechanism.
View original record To R. from Hs. c.c. to E. c.c. to CJ. c.c. to Ds. c.c. to EY. c.c. to EP. c.c. to Wor.X4229 GOSHAWK 11. OVER-OILING. X4221/X4225 X4221 Hal/LG16.1.22. All our tests go to prove that if we can only…

scan0246 Over-oiling and strainer design for the Goshawk 11 engine.
View original record To Hs. from R To EP. c. to CJ. c. to BY. c. to PN. c. to Da. c. to E. c. to Hy. c. to EFC. X4221 R1/M19.1.22. X4229 OIL - GOSHAWK 11. X.4221. X.4220 OVER-OILING. I understand over-oiling is traced to…

scan0247 Instructions for engine oil changes and crankcase maintenance.
View original record contd. -2- R1/M19.1.22. in the crankcase. We could sacrifice some of this virtue if necessary. In a new engine, with grit, fluff, etc, in the crank-case, the oil should be drained out frequently at…

scan0248 Investigation into Goshawk 11 engine vibration issues occurring at high RPM.
View original record To E. from Hs. c. to CJ. c. to Da. c. to BY. c. to EP. c. to Wor. X4221 Hsl/LG10.2.22. COSHAWK 11. ENGINE VIBRATION. X4221 With reference to the engine vibration which occurs at just over 3000 R.P.M.…

scan0249 Magneto control gear for the Goshawk 11 engine.
View original record To Da. from E. c. to CJ. c. to Wor. c. to BY. c. to Hs. X4221 E1/M10.2.22. X.3517 - GOSHAWK 11 - MAGNETO CONTROL GEAR. X.4221 X.4239 We send you herewith drawing No.LeC.1532 shewing the above. The…

scan0250 Request to review engine levers to reduce part variations and a note on an upcoming magneto wiring scheme.
View original record -2- We should be glad if you could go over all the levers on the engine in Derby to see if by slight alterations not affecting the design, the number of different parts could be reduced, and the same…

scan0251 Goshawk 11 engine vibration, detailing tests on an out-of-balance slipper wheel.
View original record To E. from Hs. c. to CJ. c. to Da. c. to BY. c. to EP. c. to Wor. X4221 Hs1/LG11.2.22 GOSHAWK 11. ENGINE VIBRATION. X4221 Further tests we have carried out, it was found that a slipper wheel which was…

scan0252 Confirmation of wire from Royce regarding a crankshaft report and suggestions for modifications.
View original record R.R. 235A (100 T) (S H. 798. 10-12-20) G. 2947 CONFIRMATION OF WIRE. ROYCAR DERBY. HIVES - ANXIOUSLY AWAITING REPORT OF CRANKSHAFT PERIOD SUGGEST REMOVING FAN PULLEY AND MAKING FIXED HUB IN PISTON…

scan0253 Drawing No.LeC.1533, which details an extra valve spring and a redesigned valve gear cover nut for the Goshawk 11 engine.
View original record To Da. from E. c. to CJ c. to Wor. c. to BY. c. to HS. X4221 E1/M11.2.22. GOSHAWK 11. X.4226. X4221 DOUBLE VALVE SPRINGS & MODIFIED VALVE GEAR COVER NUT . We send you herewith drawing No.LeC.1533…

scan0254 Goshawk 11 engine vibration issues caused by an unbalanced slipper wheel.
View original record X4221 To E. from Hs. c. to CJ. c. to Da. c. to BY. c. to EP. c. to Wor. Hs7/LG13.2.22. GOSHAWK 11. ENGINE VIBRATION+ X4221 The investigations carried out in regard to the above to date, confirm that…

scan0255 Cracked cam wheel on a Goshawk 11 engine due to vibration during high-speed running.
View original record To E. from Hs. c. to CJ. c. to Da. c. to BY. c. to EP. c. to Wor. X4221 Hs8/LG14.2.22. GOSHAWK 11. ENGINE VIBRATION. X4221 We have cracked a cam wheel similar to the others on the Goshawk engine which…

scan0256 Investigation into Goshawk 11 engine vibrations by analyzing a camshaft slipper wheel.
View original record To R. from Hs. c.c. to CJ. c.c. to E. c.c. to Da. c.c. to EY. c.c. to EP. c.c. to Wor. Handwritten: X42-21 Hs1/LG16.2.22. GOSHAWK 11. ENGINE VIBRATIONS. X.4221. We are sending to you the Camshaft…

scan0257 Mr. Royce's recommendation to manufacture Goshawk 11 slipper flywheels in steel.
View original record To Hs. from E. c. to CJ. Wor. c. to Hy. Da. X4221 E3/M17.2.22. GOSHAWK 11. SLIPPER FLYWHEELS. X.4221. With reference to the above Mr. Royce thinks that we shall have to make these in steel, and bush…

scan0258 Goshawk 11 engine vibration, its potential causes and solutions.
View original record X4221 To Hs. from R. c. to CJ c. to Wor. c. to BY. c. to EP. c. to E. c. to Da. R1/M18.2.22. GOSHAWK 11. ENGINE VIBRATION. X.4221. With reference to your Hs1/LG16.2.22., is the crank-chamber bending…

scan0259 Causes of and solutions for engine vibrations, focusing on crank chamber stiffness and crankshaft bending.
View original record Contd. -2- RL/M18.2.22. would reduce the cause but lower the period and so we should be perhaps worse off. As far as I know the only thing to do is to make the crank chamber stiffer sideways and help…

scan0260 Engine vibrations on the Goshawk II, investigating crank chamber strengthening and flywheel clearance.
View original record To Hs. from E. c. to CJ. c. to Wor. c. to BY. c. to Ds. c. to EP. X4221 E1/M20.2.22. GOSHAWK II. ENGINE VIBRATIONS. X.4221. Further to memo. R1/M18.2.22., Mr. Royce would like you to watch the…

scan0261 Recommendation for the setting of the Goshawk II slipper drive arrangement.
View original record X4221 BY from EP. c. to Hs. EP3/H21.2.22. Re. GOSHAWK II. SLIPPER DRIVE ARRANGEMENT. X4221 With reference to the above, we recommend that the best setting for the slipper drive is for 8 springs only…

scan0262 Goshawk engine vibration issues causing camshaft wheel failure, attributing it to crankcase bending and proposing two stiffening solutions.
View original record X4221 To CJ. from E. c. to Wor. c. to Hs. E1/M21.2.22. GOSHAWK PRODUCTION. X.4219 X.4229 X4221 We know of no reason from a design point of view why the programme fixed for the above is likely to be…

scan0263 High-speed vibration issues in the Goshawk 11 engine, focusing on its unique crankcase design and suspected weaknesses.
View original record To Hs. from E. X4221 E2/M22, 2. 22. X.4221 X.4220 X.3431. The high speed vibration on the Goshawk 11. seems to be an effect we have not got on any other RR. engine, and it is significant that Goshawk…

scan0264 Continued document discussing stress testing of engine components, with a focus on main bearings and crankcases.
View original record contd:- -2- E2/M22. 2. 22. ----------- static stress 3 times. The engine on a period might have 5 or 6 times the load.) As it is likely that the main bearings dervie some support from the cylinder…

scan0265 Telegram confirming a successful test on a Goshawk engine's crankcase with broad horizontal flanges.
View original record Roycar Derby. Hives Goshawk tested with broad horizontal flanges Bolted between top and bottom half show no sign of trouble due to crank case. Elliott.

scan0266 Extracts from a letter from Mr. Royce discussing car testing, engine vibration, and improvements from France.
View original record X4221 Extracts from a letter from Mr. Royce, dated 26th.Feb. '22. La Villa Mimosa, Le Canadel, Par le Lavandou, Var. France, X.4219 X.4221 Ar.3922 [struck through] X.4426 X.2565. "We arrived quite…

scan0267 Progress report on the Goshawk 11 car, detailing delays, equipment fitting, and troubleshooting for an engine vibration issue.
View original record R. Le Canadel, France. from Hs. XL4221 HS6/L09.3.22. GOSHAWK 11. Owing to delay at Hoopers, we anticipate that it will now be Tuesday or Wednesday the 14th. and 15th .inst. before I can cross over…

scan0268 Modifications for the Goshawk 11 stiffer crankshaft.
View original record X.4221. Hs. from E. c. to CJ. c. to WOR. c. to Da. c. to BY. c. to Mr. Coverley. E2/M 17.3.22. GOSHAWK 11. STIFFER CRANKSHAFT. X.4221. You will recollect that the stiffer crankshaft instructed for…

scan0269 Listing altered blueprints for the Goshawk 11 engine's stiffer crankshaft experiment.
View original record X4221 To RHC. from BY/Shn. c. to EFC. c. to Sft. c. to Wd. c. to Mr. Broome. BY/Shn6/DB21.7.22. X.4220 - Goshawk 11. Crankcase & Bearings. X.4221 - " " Crankshaft. X.4223 - " " Connecting Rod. Please…

scan0270 Potential improvements for Goshawk engine valves and spring drives.
View original record To BY & HS. from R. c. to CJ. BJ. c. to Wor. EP. X4221 RL/M18.12.22. RE. GOSHAWKS. X.4226 X.4222 X.4221 X.3551. (1) RE VALVES X.4226. With heavy bodies I fear we are asking for a lot of HP. for a…

scan0271 Modifications to half-time gears, magneto design, and exhaust valves.
View original record contd:- -2- In regard to the half time gears we are hoping that with a special oil jet upon the crankshaft pinion (and possibly with fan added) the half time unit drive will permit slack embodying all…

scan0272 Improved spring drive for the Goshawk 11 engine, referencing drawing No.Lec.1665.
View original record To BY. from E. c. to CJ. Wor. c. to HS. EP. X4221 E1/M30.12.22. GOSHAWK 11. IMPROVED SPRING DRIVE. X.4222 X.4221. In accordance with Mr. Royce's recent memo. we send you herewith drawing No.Lec.1665…

scan0273 Technical note discussing the design of driving springs and the meshing of gear teeth.
View original record contd:- -2- the correct meshing of the teeth at the moment of engagement by looking down in between the flywheel and the camshaft gear-wheel. The driving springs in this design are working at a…

scan0274 Test results of a 20 HP engine with a large crankshaft showing reduced flywheel wobble at high RPM compared to the standard engine.
View original record X4221 To R. from Hs. c. to CJ. c. to E. c. to Da. c. to BY. Hs3/LG1.1.23. 20 HP. ENGINE WITH LARGE CRANKSHAFT X.4221. We have been running a 20 HP. engine on the test bench fitted with the large…

scan0275 Trial for a larger Goshawk crankshaft design before standardisation.
View original record To BY. from R. c. to CJ. BJ. c. to Wor. PN. c. to Hs. E. c. to Da. EP. X.4221 R5/M26.4.23. GOSHAWK CRANKSHAFT. I suggest that we go ahead to prove that the larger shaft with same size crankpin is the…

scan0276 The testing of a larger crankshaft for a 20 HP engine, which resulted in worn bearings.
View original record To R. from Hs. c. to CJ. c. to E. c. to BY. c. to Da. X4221 Hs12/LG10.5.23. 20 HP. LARGER CRANKSHAFT. We found, that the only engine in which we have been running the larger Crankshaft, the…

scan0277 Clarifying a modification to the Goshawk slipper flywheel, noting an uncommunicated reduction in springs.
View original record X.4244 X.4221. To R. from E. c. to BY. c. to HS.7 E1/M31.5.23. RE. GOSHAWK SLIPPER FLYWHEEL. X.4221. Regarding the alteration to the Goshawk slipper flywheel, I agree that Mr. Bailey mentioned the…

scan0278 20 HP engine gear failures caused by insufficient clearance for the slipper flywheel.
View original record X.4221. Sft. c. to BY. c. to Hs. EP1/H7.6.23. RE. 20 HP. ENGINE GEAR FAILURES X.4247. X.4221. One of the features which we experienced in the early Experimental car was that when the engine was run…

scan0279 Slipper flywheel clearances for the 20 HP chassis spring drive.
View original record X.4221 To Sft. c. to EP. c. to Hs. c. to Sft. for Mr. Cox. By/Shn6/DB19.6.23. RE. 20 HP CHASSIS - SPRING DRIVE. (SERRATED TYPE) E.51055 - SLIPPER FLYWHEEL CLEARANCES. X.4222 X.4221 Regarding the…

scan0280 Request to change the material of the 20HP flywheel from mild steel to .6 carbon steel and issue a new piece number.
View original record X4221 Mr D'Aeth. c. Hs. BY1-P13.7.23. 20HP. FLYWHEEL & CLUTCH. Will you kindly alter the material of the Flywheel G.50540 from mild steel to .6 carbon steel, altering the specification number and…

scan0281 Specification sheet comparing connecting rod and crank dimensions for Condor, 40/50 HP, and Goshawk engines.
View original record X.4221 19.7.23. CONDOR. Con rod 13" X.4416 Crank 3.75" X.3208 Con Rod/Crank 3.47 40/50 HP. Con Rod 9.9" X.3429 Crank 2.375" X.3432 Con Rod/Crank 4.17 GOSHAWK. Con Rod 7.95" X.4228 Crank 2.25" X.4221…

scan0282 Request to produce two experimental Goshawk II crankshafts instead of one.
View original record RHC. c. Hs. C. BFP X.4221 Rg2/W19. 10. 23 EXPERIMENTAL CRANKSHAFT - GOSHAWK II. Further to Rg/SFP2/W18.10.23, will you please put in hand two of these crankshafts instead of one. Rg.

scan0283 Listing detail drawings for the Goshawk II experimental crankshaft and requesting production of two sets.
View original record X4221 RHG. c. Hs. Rg/SFP3/W25. 10. 23 EXPERIMENTAL CRANKSHAFT - GOSHAWK II We send you herewith the following detail drawings in connection with the above:- E.53078 Crankshaft Intermediate Bearing…

scan0284 Faults and proposed solutions for the 20HP slipper drive.
View original record X4221 EP. c. Hs. BY17-P26.10.23. 20HP. SLIPPER DRIVE FAULTS. Referring to EP18/H221023, the obvious solution to the trouble in question is to turn back the bolt fixing the spring movements a full turn…

scan0285 Investigation into faulty crankshaft bearings on a 20-HP engine due to blocked oil ways from a deposit.
View original record X4221 BY. [crossed out] c. Hs. c. Wer. c. SEH. EP1/H6.11.23. re. 20-HP Faulty Crankshaft Bearings. It has been brought to our attention by one of our Depots ( Cricklewood) that 20-HP car 60-S-O, after…

scan0286 Experimental disc crank for a Goshawk engine, referencing the Hispano crankshaft and outlining proposed tests for new models.
View original record X4221 R. (at le Canadel) G. BJ. C. PJ. C. Her. C. Hs. G. WH. Rgd/W15. 1. 24 DISC CRANKS. X4221 The experimental disc crank which we put in hand for a Goshawk Engine is now completed, and we shall soon…

scan0287 Testing a disc crankshaft for a 20 HP engine, detailing vibrations, weight and performance.
View original record R.R. 493A (40 H) (SL 42 12-7-23). J.H., D. V4221 Expl. No. 4221 634 4604 REF: Hs2/LG20.2.24. EXPERIMENTAL REPORT. To R. from Hs. c. to CJ. RG. c. to E. BY. c. to DA. PN. DISC CRANKSHAFT FOR 20 HP. We…

scan0288 Continued memorandum discussing the fitting of a damped spring drive to overcome an issue at full power.
View original record contd:- -2- under full power at all speeds. We should expect the effect of this to be overcome by fitting a damped spring drive. Hs.

scan0289 Merits of a heavier disc crankshaft for an aero engine, proposing it could reduce flywheel weight and allow for a shorter, higher-speed engine.
View original record To HS. from R. c. to CJ. RG. DA. E. BY. 4221 S E C R E T. R5/M8.5.24. E. A. C. & GOSHAWK. DISC CRANKSHAFT. X.4221 X.9010 It has occurred to me that owing to the increased weight of the disc crankshaft…

scan0290 Suggesting modifications to a damaged clutch plate and first motion shaft for experimental testing.
View original record 4221 3 Hs. BY22/H. 27. 6. 24. CHASSIS 62-H-3. CLUTCH. I am sending you herewith a Clutch Plate and First Motion Shaft taken from Lord Rothermere's 20 HP. car. I suggest that we should turn away the…

scan0291 High speed vibrations in a 20 HP engine, comparing a disc crankshaft with a standard one.
View original record R.R. 408A (20H) (D.A. 652 20-3-24) J.E.D. EXPERIMENTAL REPORT. Expl. No. 4221 REF: HS2/LG26.9.24. To R. from Hs. c. to CJ. BJ. c. to RG. E. c. to DA. BY. c. to EP. 20 HP. DISC CRANKSHAFT. 4221 X4604…

scan0292 Request for a blueprint and performance report on the Goshawk disc crankshaft.
View original record X.4221. To BY. HS. FROM E. c. to CJ. E2/M8.10.24. RE. GOSHAWK DISC CRANKSHAFT. X.4221. Would you kindly send us a blue print giving the dimensions of the disc crankshaft that was tried on the Goshawk?…

scan0293 Sending a blueprint for the Goshawk disc crankshaft and requesting a report on its experimental performance.
View original record X4221 c. Hs. BY/C18/H. 10. 10. 24. GOSHAWK DISC CRANKSHAFT. As requested in E2/M. 8.10.24. we send you herewith blueprint of E.53050 giving dimensions of the disc crankshaft which was tried out…

scan0294 Modifications and performance of the 5-G-11 car, focusing on crankshaft vibration and steering.
View original record R.E. 493A (20H) (D.A. 652 20-3-24) J.E.D. EXPERIMENTAL REPORT. Expl. No. 4219 REF: Hs3/LG20.10.24. Handwritten: +4221 To R. from Hs. c. to CJ. BJ. c. to E. DA. c. to BY. Wor. 5-G-11 CAR. Handwritten:…

scan0295 Modifications to the pivot pin, steering box fixing, and silencer.
View original record R.R. 493A (20H) (D.A. 652 20-3-24) J.H.D. -2- Expl. No. REF: Hs3/LG20.10.24. EXPERIMENTAL REPORT. of the pivot pin instead of being 6º has been altered to 4º 10'. With this axle we can also afford to…

scan0296 Results of tests on Aero Engine crankshafts, particularly the poor performance of a disc type.
View original record X4221 To E. from Hs. CRANKSHAFT TESTS. X4221 X3208 We attach herewith particulars of tests taken on Aero Engine Crankshafts. We are sending you this information because it may be useful when…

scan0297 Crankshaft design, bearing wear, and vibration issues in 20 HP cars.
View original record To R. from Hs. c. to CJ. BJ. c. to RG. E. c. to DA. BY. c. to Wor. 4221 20 HP. 4634 Hs6/LG26.11.24. We propose bringing to WW. (with 93-NK car), 7-G-11. The unit in this car is fitted with the disc…

scan0298 Page two of a document discussing a stiffer crankshaft with modified pins and journals.
View original record contd :- -2- any signs of distress. We are sending to E. a blue print of the crankshaft fitted to that car. It is the stiffer crankshaft which includes - stiffer webs and journals. The pins have been…

scan0299 From Hs. to E. regarding the dispatch of crankshaft blueprints.
View original record To E. from Hs. (4221) Hs/LG3.12.24. RE. CRANKSHAFT. Referring to. Hs6/LG26.11.24. We are sending you the blue prints in connection with the above herewith. E.53050 E.52468 Hs.

scan0300 Tests conducted on a 20 HP crankshaft.
View original record X4221 R.R. 403 (40 H) (SL 42 12-7-23). J.H., D. EXPERIMENTAL REPORT. COPIES TO: R.CJ. BJ. WOR. By. E. Da. EP. PN. OY. Expl. No. 4221 REF. Hsl/LG23.12.24. OBJECT OF TEST. Tests on 20 HP. Crankshaft.…

scan0301 Tests conducted on 20 HP crankshafts.
View original record R.R. 493A (50H) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. Expl. No. REF. HS/TMW/LG23.12.24. 20 HP. CRANKSHAFTS. Up to date, the following experimental tests have been carried out on Crankshafts.…

scan0302 Vibration tests on various shafts at different speeds and throttle conditions.
View original record R.R. 493A (50M) (D.B. 175 25-9-24) J.H.D. -2- EXPERIMENTAL REPORT. Expl. No. REF Hs/TMW/LG23.12.24. 7-G-11 - Disc shaft. The period comes on sooner than with standard shaft - viz :- 37 m.p.h., lasts…

scan0303 Stress testing a standard crankshaft to failure by towing a car.
View original record R.R. 493A (50H) (D.B. 175 25-9-24) J.H.D. -3- EXPERIMENTAL REPORT. Expl. No. REF: Hs/TMW/LG23.12.24. when running in top gear. It was then decided to endeavour to break a standard Crankshaft by the…

scan0304 Blueprint showing the position of a fracture on a Goshawk disk crankshaft.
View original record [ "GOSHAWK DISK CRANKSHAFT", "POSITION OF FRACTURE.", "FRACTURED HERE", "FRACTURE", "NO. 6. THROW", "ROLLS-ROYCE LIMITED,", "PHOTO. ROOM", "17 DEC. 1924", "DERBY." ],

scan0305 Blueprint of a Standard Goshawk Crankshaft showing fracture locations.
View original record STANDARD GOSHAWK CRANKSHAFT. FLYWHEEL FLANGE FRACTURE NO 6 THROW FLYWHEEL END FRACTURE No.6. ROLLS-ROYCE LIMITED. PRINT ROOM 19 DEC 1928 DERBY. CROXLEY BOND

scan0306 Sketches of parts required to complete tests on a crankshaft vibration damper.
View original record To RHC. from Hs/Rm. X4221 X6834 Hs/Rml/LG28. 6. 27. Attached herewith are sketches of the parts required to complete our tests on the crankshaft vibration damper. These consist of a larger flywheel,…

scan0307 Requesting to fit a second crankshaft damper with improved plates and a larger flywheel onto a 20 HP test bed engine.
View original record +4221 To RHC. from Hs/Rn. Hs/Rm4/LG15.7.27. CRANKSHAFT DAMPER. X634 We are anxious to try a second crankshaft damper with the improved plates and larger flywheel on the 20 HP. test bed engine as soon…

scan0308 Excessive slack in cylinder valve stem guides and proposing reduced clearances.
View original record X 4432 A.R. A.T. BY. from EP. c. to SFT. c. to MS. (C.E.F.C.) EP7/F30.11.20. X2464 RE. CYLINDER VALVE STEM GUIDES. We find that slack is developed in these guides after the car has been in service for…

scan0309 Excessive play in engine valve guides on new cars and the associated costs of repair.
View original record Y4432 FR PY. from EP. c. to Hs. EP/Thn13/H29.11.21. Re. ENGINE VALVES. - EXCESSIVE PLAY IN VALVE GUIDES ON NEW CARS. We attach hereto copy of memo we have received from Paris Depot re the above, on…

scan0310 Excessive wear in valve guides on new cars, detailing a specific customer case and requesting authorisation for repair costs.
View original record Re. PLAY IN VALVE GUIDES ON NEW CARS. Ps.1/JP18.11.21. Our Works have on two or three occasions been compelled to fit over-size valves to post-war cars, due to excessive wear of valves and guides. To…

scan0311 Wear on 40/50 valve guides and proposing the testing of valve guide bushes as a more economical repair method.
View original record To E. from Hs. c. to CJ. c. to EY. x4432 Hs4/LG6.1.22. 40/50 VALVE GUIDES. x4432 We get considerable wear on the 40/50 Valve Guides. The wear on the inlet valve guides is a frequent cause of poor slow…

scan0312 Proposal to address excessive wear on 40/50 valve guides by testing and standardizing replaceable valve guide bushes.
View original record E. from Hs. c. to CJ. c. to BY. X4432 Hs4/LG6.1.22. 40/50 VALVE GUIDES - X.2764 We get considerable wear on the 40/50 Valve Guides. The wear on the inlet valve guides is a frequent cause of poor slow…

scan0313 Relaying Mr. Royce's decision to reject a proposed alteration to the 40/50 chassis valve gear.
View original record R.R. 255e (50 T) (S.H. 988, 19-2-21) G. 3009 X4432 To Hs. from E. c. to CJ. c. to Wor. c. to BY. X.8764. E2/M11.1.22. 40/50 CHASSIS VALVE GUIDES. In reply to your report Hs4/LG6.1.22., kindly note Mr.…

scan0314 Reminder memo from C.J. to Hs. regarding the discontinuation and substitution of the 40/50 HP chassis.
View original record X4482 To Hs. from CJ. CJ3/E6/2/22 This is a reminder that you promised to let me have a copy of the memo. from R. in which he said the 40/50 HP chassis was going out of production and the new 40/50…

scan0315 Correspondence on 40/50 HP valve guides.
View original record R.R. 335B (100 T) (S.H. 798, 10-12-20) G. 2948 X4437 CJ. from Hs. Hs3/LG6. 2. 22. VALVE GUIDES - 40/50 H.P. We attach herewith correspondence as requested at the Derby Conference. Hs.

scan0316 Confirming Mr. Royce's agreement to trial replaceable valve guides on the 40/50 chassis for standardization.
View original record To CJ. from E. c. to WOF. c. to BY. c. to Hs. x4432 E6/M22.2.22. 40/50 CHASSIS VALVE GUIDES X. 2764. In reply to your. CJ12/E9.2.22., would you kindly note that Mr. Royce agrees to trying replaceable…

scan0317 Blueprints for an experiment with valve guide bushes for the 40/50 chassis.
View original record c. to EFC. X4432 BY/Shn7/DB.17.3.22. X.4432 - 40/50 CHASSIS - VALVE GUIDE BUSHES. Please receive herewith two blueprints of each of the following drawings, detailed in accordance with Mr Bailey's…

scan0318 Requesting a full report comparing the quality of post-war valves to pre-war valves.
View original record Hs RECEIVED To Hs. from BJ. BJ8/H30.5.22. X4432 Re Pre-war and Post-war Valves. Please send a full report on the post war valves as compared with pre-war valves. Hm. gave the impression at a recent…

scan0319 Valve troubles in post-war cars, specifically addressing excessive wear, burnt valves, and potential causes.
View original record To R. from Hs. c.c. to OJ. c.c. to I. c.c. to Da. c.c. to Ev. c.c. to EP. c.c. to Hm. X4432 HS4/T1. 6. 22. VALVE TROUBLES ON POST WAR CARS. X4432 X3315 X4226 Valve troubles on post war cars consist of…

scan0320 The causes of valve wear in post-war cars and methods of lubrication.
View original record Contd. -2- Hg4/T1.6.22. pulled the valve over one way when fitted up. Or in other cases the coils have been wound unevenly so that, when compressed, the spring leans over and causes the valve to rub…

scan0321 Continued discussion on lubricating worn valves and guides, and introducing replaceable guides.
View original record Contd. -3- Hs4/T1.6.22. fairly easily from a syringe and ensures that the felt is soaked with oil. Hm., who has mostly to deal with troubles caused by the worn valves and guides has tried a scheme of…

scan0322 Valve troubles in post-war cars and a proposed scheme for lubricating valve guides.
View original record [Header text, top left: R. 326A (100 T) (S.H. 798, 10-12-20) G. 2947] [Stamp: RECEIVED JUN] [Initials, left side: Mr., E.W.H., H.I., HS., RB.] X4432 Hm/NRC3/W9.6.22. Valve Troubles on Post-war Cars.…

scan0323 Continued note on oil consumption at each valve.
View original record -2- Hm/NRC3/W9.6.22 Contd. The consumption of oil is about a teaspoonful in 300 miles at each valve. [handwritten 'JSH'] Hm/NRC.

scan0324 Request to return a standardisation sheet for bushes for valve guides with the costs filled in.
View original record X4432 My. from hs. Hs/LG8. 8. 22. X.4432. RE. STANDARDISATION SHEET BUSHES FOR VALVE GUIDES. We should be glad if you will return the above standardisation sheet with the costs filled in. If you are…

scan0325 Distribution memo for completed standardisation sheets regarding tyres, valve guides, and throttle.
View original record X4432 To R. from Hs. c. WJ & BJ. c. Wor. c. EP. c. Da. c. Ey. c. PN. c. EWT for R.R.Inc. c. Rg. Herewith please receive for your permanent reference copies of the following completed standardisation…

scan0326 Standardisation of chassis parts, specifically bushes for valve guides.
View original record R R 755 (5 H) (S H 268. 29-9-20) G 2354 X4432 COMPLETED 5.10.22. STANDARDISATION of CHASSIS PARTS. Description of Parts. Bushes for Valve Guides. Origin. To reduce the cost of repairs. Experimental…

scan0327 Cost implications of changing valve guides from bar material to die-casting for the 40/50 HP Chassis.
View original record To Hs. from My/JW. C. to By. My/JW/N1/M.9.8.22/139A. X.No.4432 - 40/50 H.P. Chassis Valves and Valve Guides. We return herewith copy of above Standardisation Sheet with Cost for new production filled…

scan0328 Proposal for fitting detachable bushes for valve guides to address poor slow running on 40/50 engines.
View original record Hs5/LGC.8.22. X.4432 - BUSHES FOR VALVE GUIDES The chief cause of poor slow runningon the 40/50 engine is caused by wear in valve guides and to a less degree on valves. At the present time, when the…

scan0329 Standardisation of replaceable valve guides and material experimentation.
View original record V4432 To BJ. from Hs, Hs3/LG1.11.22. VALVES. Referring to your BJ11/H27.10.22 attached. We have recently standardised replaceable valve guides. This will not prevent wear but it will make it easier…

scan0330 Proposal to alter the valve guide clearance for the 40/50 chassis by modifying the diameter of the valve stems.
View original record X4432 Mr Shelton. c. EF. c. HS. c. SPT. c. WG. HY1-P5.12.22. 40/50 CHASSIS. VALVE GUIDE CLEARANCE/ In view of EP's recommendation and the fact that our Repair Dept. are at the moment actually working…

scan0331 40/50 chassis, instructing the reduction of valve guide bores to suit existing finished valves by producing a special undersize reamer.
View original record XU432 Mr Shelton. c. CM c. Hs. c. BFI c. Ws. BY/C7/P6.12.22. 40/50 CHASSIS. VALVE GUIDE CLEARANCE. Further to BYI-P51222, the Works inform us that they have a large number of valves in the finished…

scan0332 Wear on valve stems and guides for the 40/50 model.
View original record RV c. Hs. X4432 X2764 EP14/H9.5.24. re. 40/50 Wear on Valve Stems & Guides. Although we feel we are in a better state than we were some time ago as regards the wear which takes place on the valve…

scan0333 Valve stem issues with raw petrol and grit, proposing a new design for enclosing valves.
View original record ( 2 ) scheme does reduce the presence of raw petrol on the valve stems, and we suggest that further experiments are carried out in this matter. As regards the grit etc. getting on to the valve stems,…

scan0334 Secret memo discussing wear on 40/50 valve guides and recommending a new enclosed design.
View original record X4432 K2764 To BJ. from Hs. c. to PN. c. to EP. S E C R E T. WEAR ON 40/50 VALVE GUIDES. This matter is receiving considerable attention in the Expl: Dept: At the present time we have cars running…

scan0335 Querying the adoption of enclosed valves for the 40/50 model, referencing the practice at the Springfield plant.
View original record X4432 SECRET. Y-2764 To Hs. from BJ. Copies to Bv WP RN BJ8/H13.5.24. Wear on 40/50 Valve Guides. _________ Hs5/LG12.5.24. With reference to Hs5/LG12.5.24, what is the present position in regard to…

scan0336 Wear on 40/50 HP valve guides and the potential adoption of new valve covers from the Springfield facility.
View original record X2704 X4432 To BJ. from Hs. c. to EY. c. to EP. c; to FN. Hs2/LG13.5.24. RE. WEAR ON 40/50 VALVE GUIDES. X2704 The question of adopting enclosed valves on the present 40/50 HP. was raised at a…

scan0337 Urgency of addressing wear on 40/50 valve guides.
View original record X4432 V2764 To Hs. from BJ. BJ15/H15.5.24. Re Wear on 40/50 Valve Guides. Hs2/LG13.5.24. In view of the urgency of this matter, do you not think it would be desirable for you now to send Oy. a…

scan0338 Wear on 40/50 HP valve guides and proposing to perform modifications at Derby to avoid delays.
View original record 44432 42764 BJ. from Hs. Hs2/LG17.5.24. WEAR ON 40/50 HP. VALVE GUIDES. We do not consider it would do much good to write to OY. and ask him to deal with this matter as quickly as possible. I am sure…

scan0339 Solutions for wear on valve stems and guides, including lapping, polishing, and adding covers.
View original record X4432 X2764 BP. Hs. BY6/H. 22. 5. 24. WEAR ON VALVE STEMS ON GUIDES. ------------------------------ We have written the Works suggesting that it will be necessary, in our opinion, to lapp the inside…

scan0340 Proposed schemes to address wear on exhaust valve guides.
View original record X4432 #2764 EP. Hs. B. BY20/H. 23. 5. 24. WEAR ON EXHAUST VALVE GUIDES. ------------------------------ We are going ahead to try out a scheme of entirely covering in the valve tappet scheme.…

scan0341 Query about the progress of experiments on 40/50 HP valve guides and their potential standardization.
View original record X7764 44432 To Hs. from BJ. BJ3/H18.8.24. WEAR ON 40/50 HP. VALVE GUIDES. With reference to Hs5/LG12.5.24, please let us know how the experiments are progressing with the enclosed valves properly…

scan0342 Standardisation of Chassis Parts regarding the use of Bronze Valve Guides in place of Cast Iron.
View original record RR 755 (10H) (SL391 2-11-23) MP 281297 Handwritten: V9764/4432 COMPLETED 5.9.24. STANDARDISATION of CHASSIS PARTS. Date 21.8.24. X No. 3764 Drawing No. Part List Description of Parts. BRONZE VALVE…

scan0343 The comparative wear of Phosphor Bronze (P.B.) versus cast iron valve guides after 12,000 miles.
View original record 21.8.24. 40/50 VALVES AND VALVE GUIDES. X. 2764. We attach a report in connection with P.B. Valve Guides fitted to a car which has run 12,000 miles in France. At the same time we had another car…

scan0344 Examination report on the wear of valves and guides for a 98-NK car after a 10,000-mile test.
View original record To Hs. from RHC. C O P Y. RHC3/LS20.8.24. RE. VALVES & GUIDES ON 98-NK CAR. We have examined the valves and valve guides (made in Phosphor bronze) which were fitted to the above car for 10,000 miles…

scan0345 Progress on adopting new valve covers for 40/50 HP valve guides.
View original record To Hs. from BJ. f4432 BJ22/H23.9.24. WEAR ON 40/50 H.P. VALVE GUIDES. On the 14th April 1924, at a conference at Derby, you raised the question as to whether we should make the present chassis as up…

scan0346 The wear of 40/50 HP valve guides and the standardisation of bronze guides to replace cast iron ones.
View original record X4432 To B.J. from Hs. Hs2/LG24.9.24. WEAR ON 40/50 H.P. VALVE GUIDES. X4432 X2764 The new cylinder castings which have had to be made in connection with the enclosed 40/50 HP. valves, are at present…

scan0347 Letter from Katalite Corporation regarding the application and performance of their product on car engines.
View original record X4595 M Lewis from E.P. KATALITE CORPORATION COMPLETE EFFICIENT COMBUSTION 233 BROADWAY NEW YORK, N.Y. TELEPHONES • BARCLAY 5442 March 22, 1923. Mr. G. E. Platford, c/o Rolls-Royce, Ltd., Derby,…

scan0348 Letter from Katalite Corporation discussing tests and the potential application of their catalysed cylinder head to Rolls-Royce engines.
View original record Mr. G. E. Platford -2- March 22, 1923. We would like very much to do everything in our power in order to convince you fully of the merits of our product, and we would be very glad to receive a…

scan0349 Testimonial letter from Westinghouse Electric International Company regarding the improved performance of trucks treated with Katalite.
View original record Form 2967-D WESTINGHOUSE ELECTRIC INTERNATIONAL COMPANY Codes used: Westinghouse Export, 1911 Lieber's A B C 4th edition Western Union, Samper, New Business Cable Address: WEMCOEXPO, EAST PITTSBURGH…

scan0350 Testimonial letter to The Katalite Corporation about the performance of a Katalizer device in a Pierce Arrow Limosine.
View original record Forest Hills, L. I., October 14, 1922. The Katalite Corporation, New York, N. Y. Gentlemen:- It is with pleasure that I add my testimonial to your list of satisfied users. My Pierce Arrow Limosine 48…

scan0351 Testimonial letter from an automobile distributor detailing performance improvements on a Velie touring car after using a catalytic agent.
View original record VELIE SIX Telephone Columbus 5596 WINTON SIX GARLAND AUTOMOBILE COMPANY Distributors of Motor Cars 1888 BROADWAY at 62nd Street NEW YORK March 6, 1923. The Katalite Corporation, Woolworth Bldg., New…

scan0352 Advertisement for 'Katalite', a chemical agent claiming to maximize motor fuel efficiency.
View original record KATALITE The chemical agent which accomplishes what twenty-five years of mechanical automotive engineering have failed to produce Maximum Efficiency of Motor Fuel An Entirely New and Exclusive…

scan0353 Letter from the Springfield Gas Light Company to the Katalite Company regarding equipping their entire fleet of vehicles with a catalytic agent.
View original record SPRINGFIELD GAS LIGHT COMPANY SPRINGFIELD · MASSACHUSETTS OFFICE OF THE MANAGER December 30, 1922. KATALITE COMPANY OF NEW ENGLAND, INC. 244 Charles Street, Boston, Mass. (Attention F. H. Woodman)…

scan0354 Promotional leaflet explaining the benefits of the fuel additive 'Katalite' for engine performance.
View original record KATALITE AND COMPRESSION Katalite gives you all the advantages of high compression. In order to give the greatest amount of power the explosion should take place when the upward stroke of the piston…

scan0355 Promotional document explaining the benefits and application of KATALITE, a catalytic agent for improving engine combustion.
View original record SPECIFIC CLAIMS FOR KATALITE Mechanical Engineering can-not materially influence a chemical reaction like the explosion of gasoline. 1. More miles per gallon of gasoline. KATALITE makes the mixture…

scan0356 Promotional document for a chemical engine treatment called KATALITE.
View original record been done to make motor cars run better (with the exception of electrical devices), has been a purely mechanical refinement. You can apply KATALITE to the most expensive car built or to the cheapest…

scan0357 Report reprinted from the Newark Star-Eagle newspaper on increased gasoline mileage in a Dodge vehicle after cylinder head treatment with 'Katalite'.
View original record 71% MORE GASOLINE MILEAGE Newark Star-Eagle February 6, 1923 Mr. Karl F. Hall, Circulation Mgr. Report on Dodge #2 - driven by McGree - before and after having cylinder heads treated with "Katalite".…

scan0358 'Katalite', enclosing a copy of document Oy1/E/22724 and four charts.
View original record To EP. from BJ. c. to Hs. +4595 BJ/Py11/D10.3.24. Re: Katalite. We attach copy of Oy1/E/22724 of February 27th, together with the enclosures referred to. BJ/Py. Encs: Copy of Oy1/E/22724 4 charts (to…

scan0359 Letter discussing Dr. Sokal's catalysing process for engine cylinders and a proposal for further testing.
View original record Oy1-E-22724 February 27, 1924. Mr. Claude Johnson, Rolls-Royce, Ltd., London, England. (Copy for attention of Mr.E.Platford " " " " Mr.E.Hives) Dear Sir: Re: Ketelite At Mr. Haldenby's visit I was…

scan0360 The effectiveness of a catalyser, its maintenance regarding carbon build-up, and its benefits with a Ricardo head.
View original record Oy1-E-22724 -2- February 27, 1924 It is doubtful however if equal economies could be obtained with the superior English fuel. Judging by my experience the effect of the catalyser begins to decrease…

scan0361 Letter from Katalite Corporation to Mr. M. Olley discussing the use of Katalite to counteract engine detonation, referencing enclosed test data.
View original record KATALITE CORPORATION 233 Broadway, New York. February 21, 1924. Mr. M. Olley, Rolls-Royce of America, Inc., Springfield, Mass. Dear Mr. Olley:- At our last exhange of letters you stated that you would…

scan0362 Letter to Mr. M. Olley discussing test results on fuel consumption, cylinder heads, detonation and spark advance, with a focus on a treatment called 'Katalite'.
View original record Mr.M.Olley -2- February 21, 1924. III. Fuel Consumption Full and Part Throttle (cont'd.) Sheet #4 gives the same curves for part throttle. In all these tests, the same cylinder head was used, first in…

scan0363 Letter from Locomobile Company of America introducing Dr. Sokal and his work on a catalytic agent called Katalite.
View original record LOCOMOBILE COMPANY OF AMERICA Incorporated Bridgeport Connecticut December 27, 1923. Mr. Herbert Chase Associate Editor Automotive Industries New York City, N. Y. My dear Mr. Chase: For several years…

scan0364 Material 'Katalite' following a visit to America and information gathered in New York.
View original record TO. BJ. from EP. c. Hs. J4595 EP2/H14.3.24. re. Katalite. With reference to your BJ/Py11/D10.3.24, covering memo on the above from Springfield, Oy1/E22724. I quite agree that during my last visit to…

scan0365 Letter discussing Dr. Sokal's catalysing process for engine cylinders and proposed testing.
View original record Oy1-E-22724 February 27, 1924. Mr. Claude Johnson, Rolls-Royce, Ltd., London, England. (Copy for attention of Mr.E.Platford " " " " Mr.E.Hives) Dear Sir: Re: Katalite At Mr. Haldenby's visit I was…

scan0366 Effects of a catalyser on engine performance, carbon build-up, and fuel economy.
View original record Oy1-E-22724 -2- February 27, 1924 It is doubtful however if equal economies could be obtained with the superior English fuel. Judging by my experience the effect of the catalyser begins to decrease…

scan0367 Letter from Katalite Corporation regarding developments in counteracting detonation with 'Katalite', including test results.
View original record KATALITE CORPORATION 255 Broadway, New York. February 21, 1924. Mr. M. Olley, Rolls-Royce of America, Inc., Springfield, Mass. Dear Mr. Olley:- At our last exhange of letters you stated that you would…

scan0368 Letter from Edward Sokal to Mr. M. Olley discussing engine tests and performance improvements using 'Katalite'.
View original record Mr.M.Olley -2- February 21, 1924. III. Fuel Consumption Full and Part Throttle (cont'd.) Sheet #4 gives the same curves for part throttle. In all these tests, the same cylinder head was used,- first…

scan0369 Letter from the Locomobile Company of America introducing Dr. Sokal and his work on a catalytic agent named Katalite.
View original record LOCOMOBILE COMPANY OF AMERICA Incorporated Bridgeport Connecticut December 27, 1923. Mr. Herbert Chase Associate Editor Automotive Industries New York City, N. Y. My dear Mr. Chase: For several years…

scan0370 Graph comparing fuel consumption at full throttle for an untreated versus a 'Katalited' Ricardo head.
View original record Sheet No 3 Lbs. per B.H.P. hour R.P.M. in hundreds Fuel consumption full throttle Ricardo head Curve #1 - untreated head Curve #2 - Head Katalited Curve #1 Curve #2 15% decrease H.C.H 12-11-23 EUGENE…

scan0371 Graph comparing fuel consumption of an untreated versus a 'Katalited' Ricardo head at part throttle.
View original record Sheet no 4 Fuel consumption part throttle Ricardo head Curve #1 = untreated head Curve #2 = Head Katalited Curve #1 Curve #2 21% decrease Lbs. per B.P. hour R.P.M. in hundreds. HCH 12-11-23.

scan0372 Dynamometer test results graph comparing a 'Katalited' cylinder head against an untreated one.
View original record ENGINEERING DEPT. THE LOCOMOBILE CO. OF AMERICA BRIDGEPORT, CONN. DYNAMOMETER TEST ORDER No. 950. OF Katalited cylinder head TEST MADE BY: H.C.H ASSISTED BY: A.K.L. Sheet n' 1 DATE: Dec. 3rd, 1923.…

scan0373 Dynamometer test graph from The Locomobile Co. of America for an engine with a Ricardo cylinder head.
View original record ENGINEERING DEPT. THE LOCOMOBILE CO. OF AMERICA BRIDGEPORT, CONN. DYNAMOMETER TEST ORDER No. 950. of Ricardo cyl. head on [REDACTED] engine. TEST MADE BY H.C.H. ASSISTED BY A.K.L. DATE 11-14-23 Sheet…

scan0374 Inquiry from the US office to the UK office regarding the Katalite process and a treated Hupmobile.
View original record X4595 Expl: Office, Messrs.Rolls-Royce Ltd., Derby, England. June 30th. 1923. R-R America Inc., Springfield, Mass., U.S.A. OY. from Hs. Have you any further information in connection with the Katalite…

scan0375 Letter discussing the 'Katalite' process, its performance, disadvantages, and comparison to doped fuel.
View original record ROLLS-ROYCE OF AMERICA, INC SPRINGFIELD, MASS. PERSONAL Oy3-W-73123 July 31, 1923. Mr. E. W. Hives, Mickleover, near Derby, England. Dear Hives: Re Katalite Replying to yours of June 30, we are at…

scan0376 Covering memo regarding 'Katalite', attaching a copy of document Oy6-E-51624 and its enclosures.
View original record To BF. from BJ. c. to Hs. c. to Rg. 44595 BJ/Py2/D26.5.24. Re: Katalite. We attach hereto copy of Oy6-E-51624 of the 16th inst., together with a copy of the enclosures referred to. BJ/Py. Att: Copy of…

scan0377 Letter discussing the experimental use and adoption of Katalite fuel treatment, suggesting its trial on aero engines.
View original record Oy6-E-51624 May 16, 1924. Mr. Claude Johnson, Rolls-Royce, Ltd. London, England. (Copy for attention of Mr.E.Platford " " " " Mr.E.H.Hives " " " " Mr.Rowledge) Dear Sir: Re: Katalite Referring to my…

scan0378 Letter from American Katalite Corporation regarding evidence of Katalite's effect on counteracting detonation in high compression engines.
View original record American Katalite Corporation Woolworth Bldg. New York April 21, 1924. Mr. M. Olley, Chief Engineer, Rolls-Royce of America, Inc. Springfield, Mass. Dear Mr. Olley: Referring to my previous letters in…

scan0379 Letter to the Chief Engineer of Willys-Overland Company discussing experiments with a substance called Katalite to counteract engine detonation.
View original record April 14, 1924. Mr. Arthur J. Baker, Chief Engineer, Willys-Overland Company Toledo, Ohio. My dear Mr. Baker: I wish to acknowledge receipt of your letter of April 12th and of your telegram of April…

scan0380 Letter discussing the chemical phenomenon of detonation in engines, comparing fuel stratification with a 'Katalite' catalytic coating.
View original record Mr. A. J. Baker -2- April 14, 1924. without interfering at all with a very satisfactory power output, the mixture on a Katalited engine could be leaned down so much as to require only .45 lbs of…

scan0381 Letter from Willys-Overland to Katalite Corporation regarding urgent testing of coated cylinder heads to eliminate engine detonation.
View original record THE WILLYS-OVERLAND COMPANY AUTOMOBILES TOLEDO, OHIO. John N. Willys, President. April Twelfth 1924 Dr. Edw. Sokal, Katalite Corporation, 235 Broadway, New York City. My dear Dr. Sokal: I have…

scan0382 Trial of Katalite on a Buick, enquiring about fuel types and depot locations.
View original record Hs. [redacted] X4595 EP2/H11.7.24. re. KATALITE. With reference to the communications from Springfield with regard to the above, reference Oy6/E/51624 of May 16th. if you have any interest in this I…

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