Rolls-Royce Archives
| Identifier | Entry | ||
| img001 | P.2 exhaust silencer design, back pressure, heat shields, and requesting a test run on car 19-MX. | ||
| View original record | C.W.Hancock Hotel de France, Chateauroux, Indre. France From Hs/Rm. EXHAUST SILENCERS On the P.2 silencer we have established the fact that if we want to get the fishtail noise quiet we have to have a… | ||
| img002 | Design changes and testing procedures for exhaust silencers to reduce fishtail noise and heat. | ||
| View original record | G.W.Hancock from Hs/Rm. Hotel de France, Chateauroux, Indre, France. EXHAUST SILENCERS On the P.2 silencer we have established the fact that if we want to get the fishtail noise quiet we have got to… | ||
| img003 | Test report on a modified car's performance at Brooklands, including a list of specifications. | ||
| View original record | G941 To Mr. L. From Hu c. to W. c. to Mr. T. c. to Mr. Ha. 19-3-24. TIWJ TEST This car was tested at Brooklands yesterday by H. M., and He. There was a high wind, which made it unsatisfactory for… | ||
| img004 | List of modifications and specifications for various automotive components and instruments. | ||
| View original record | -2- Ex./M.C.22.4.32. Cont'd. not fitted. The price paid for the four fasteners on 19-EX. was 6/4d. per set. It is not proposed to standardise these fasteners, the object is to gain some experience… | ||
| img005 | Sourcing better jacks due to customer demand, testing them on car 19-X, and incorporating improvements into future production. | ||
| View original record | -3- this car is fitted with permanent [illegible] jacks. We have an insistent demand from customers which is becoming more and more definite, that they require something much better than the ordinary… | ||
| img006 | Letter discussing troubleshooting for a car's overheating issue, focusing on the radiator filter and potential chemical reactions. | ||
| View original record | C. W. Hancock, Esq. Hotel de France, Chateauroux, Indre, FRANCE. To GWL. From Hs/Rn. We thank you for your reports. We note what you say about the radiator and the fact that the car is not adequately… | ||
| img007 | Road test feedback, focusing on suspension, handling, and comparisons with competitor vehicles like Alfa Romeo and Bugatti. | ||
| View original record | To: "HS". - 2 - After covering quite a lot of ground over varied surfaces, round "S" bends, etc. I, personally, am of the opinion that the car, although perfectly controllable at high speeds, does not… | ||
| img008 | Troubleshooting and clearing a radiator and flushing cylinders. | ||
| View original record | To Hs/PM From G.W.H Hôtel de France Châteauroux. We have managed to clear the radiator and got no loss of water when running. It was necessary to take the radiator off and wash it thoroughly out. We… | ||
| img009 | 10,000-mile test of a special gauze filter fitted to a radiator. | ||
| View original record | COPY. To R. C. to Sg. C. to WOr. 23-DX. With reference to the attached Daily Report of the 10,000 Mile Test 25.4.30. The radiator on this car was fitted with special gauze filter, designed at the time… | ||
| img010 | Confidential report on tests carried out on chassis 19 EX regarding its shock absorbers and handling. | ||
| View original record | To: "HS". (Showrooms) Srl/Crn.1.2.33. Re: Chassis 19 EX. CONFIDENTIAL. As requested, I carried out with Mr. Roberts a certain number of tests with this chassis, the main object being to discover… | ||
| img011 | Follow-up letter discussing an axle oil leak, a potential fix with a vented plug, and the centre point lubrication system. | ||
| View original record | -2- Hs/Rn.4/KJ.30.4.30.Contd. interested in is the rate at which an axle can lose oil through a leak of this nature. Having discovered this, we should like to know if the vented axle plug will cure… | ||
| img012 | Comparative report on the springing, steadiness, and ride quality between car models 23-EX and 24-EX. | ||
| View original record | To: Hs. From G.W.H. Hôtel de France, Châteauroux, Indre. Re: 23-EX and 24-EX Springing. There is as much difference, as the saying goes, between chalk and cheese, in the springing of these two cars… | ||
| img013 | Note discussing spring silkiness loss due to rust and comparing two types of springing. | ||
| View original record | -2- given on 23-EX is that the springs have lost their silkiness through the leaves becoming rusty and not being lubricated. That is the impression, but the real difference is in the two types of… | ||
| img014 | Troubleshooting for water loss from the cooling system and front brake squeaks on vehicle 23-EX. | ||
| View original record | To: Hs. From G.W.H. 4 Hotel de France, Châteauroux, Indre. 17/6/30. We received by Air Mail the letter authorising the signature of the papers, for which we thank you. Re 23-EX. We again had trouble… | ||
| img015 | New device to prevent brake squeaks by applying pressure to the leading shoe. | ||
| View original record | -2- the brakes are applied normally. With the damping springs on the drums, there are no squeaks at all. That is with the device fitted on the trailing shoe only. We have since designed and tried one… | ||
| img016 | Road test report on the SK-NY car after a 1400-mile run, detailing performance and passenger comfort. | ||
| View original record | Ref: Re: SK-NY Car in Motion-Pictures From: F.R. To: CC- F.R. F.S. P.S. E.V. W.A. November 14, 1923. We have completed 1400 miles run with SK-NY car. This includes a run of 1250 miles to Montreal,… | ||
| img017 | Report comparing the ride, performance, and pricing of different car models, including the Phantom I, and discussing spring design. | ||
| View original record | S-W car does not ride badly according to our standards. I find that their jobs are not so as good on the average of our roads. Springfield can show me a car which rides any better. They claim that… | ||
| img018 | Report discussing winter engine performance, ride quality and springing, with comparisons to Springfield models. | ||
| View original record | - 2 - There is one point, however, I think we may have to worry, that is under winter conditions the heat from the shutters is close at a higher temperature. Some days we have had a lot of frost from… | ||
| img019 | Specification table comparing kerb weight, axle weight, and speed ratios for various car models. | ||
| View original record | O.P.M. ETC. | CAR. | KERB WT. (CWTS.) | APPROXIMATE AXLE WT. | [illegible header] | REAR AXLE RATIO | TRANSLATED ROAD SPEED (M.P.H.) / 1000 R.P.M. OF ENGINE | |---|---|---|---|---|---| | 10-H.P. |… | ||
| img020 | Note regarding customer complaints and responsibility for the 25-EX model imported into the U.S.A. | ||
| View original record | X / 90 / 31 COPY OF NOTE RECEIVED FROM MR. (Cd) RECEIVED 3.12.30 To Sg. C. Wor. 25-EX in U.S.A. Before I left England you made it clear that there was no obligation for R.R. Ltd. to send a sample car… | ||
| img021 | Financial side, US sales negotiations for the 25 HP model, and suspension development. | ||
| View original record | -3- contd. From the engineering side, the financial side should be adjusted to suit. Beaver has pointed out to me that R.R.Inc. have given us a contract for 200 cars worth over £26,000 and they have… | ||
| img022 | Potential purchase of English lamps for Springfield cars, comparing prices and features with 'Lucas' lamps. | ||
| View original record | C. H. R. C. G. Dn. By. The Leo Kuter, LUTON. 25.11.34. LAMPS. Springfield would like if possible to purchase English lamps, the reason for this is that the lamps form such a decorative part of the… | ||
| img023 | Cost and materials for headlamps, comparing 'Staybrite' (stainless iron) with chromium plating. | ||
| View original record | - 2 - for a head lamp. It would appear worth our while look- ing to see that we are not paying too much for lamps. As regards 'Staybrite' (or stainless iron as it is called here) it is not gaining… | ||
| img024 | Visit to the General Motors Proving Ground, detailing its facilities, various road types, and testing mileage. | ||
| View original record | COPY. S/Leres The Lee House, DETROIT. 26.11.30. GENERAL MOTORS PROVING GROUND. Greater part of today I spent with 'Oy' at the General Motors Proving Ground; this is about 40 miles from Detroit. We… | ||
| img025 | Comparison of General Motors' vehicle testing methods with those used in France. | ||
| View original record | - 2 - When I was there I should estimate there were 40 to 50 different cars running round. All endurance running is run day and night. There is a permanent staff of over 200. The magnitude of the job… | ||
| img026 | Cost calculation relating to motor cars made by G.M., equating to approximately 50 cents or 2 shillings per car. | ||
| View original record | - 3 - the motor cars G.M. make in a year it only equals 50 cents per car - 2/- approx. (Sgd.) H. | ||
| img027 | 12,000-mile test report on the Spectre S.S.1 model, focusing on suspension issues, servicing, and bodywork. | ||
| View original record | SECRET. To Wor. from Sg. Copy to E.H. C.Cr. re S.S.1. Spectre Test in France. I have just been reading the report at 12,000 miles, Reference HS/CWH.2/JAB.31.7.35. The remarks on Page 1 are gratifying.… | ||
| img028 | Stiff front compartment and inquiring about the availability of a Spectre car for trial. | ||
| View original record | To Wor. from Sg. Se7/EJ.9.9.35 - 2 - this because I see it says that the front compartment becomes stifling with the existing scheme and I know from experience on some of the earlier Phantoms how… | ||
| img029 | 12,000-mile test report of the S.S.I. Spectre in France, comparing its performance against the Phantom and Cadillac. | ||
| View original record | To MG. From Hs/GWH c to Wor. c to R. c to By. c to Da. c to Ep. c to Bx. c to Hs. ✓ <300 a Hs/GWH/JAB. 31.7.35 S.S.I. SPECTRE. test in France Report at 12,000 Miles Specification to RHC/CWS/EP.… | ||
| img030 | Issues with ride quality and the inaccessibility of various components for servicing. | ||
| View original record | ( 2 ) HYDRAULIC DAMPERS. The initial loading gives a soft ride. The maximum loading with the hand control does not spoil the riding at high speeds, and is sufficient to keep the car well under… | ||
| img031 | Dismantling instructions for the clutch and a list of mileage-related failures for the engine and front dampers. | ||
| View original record | ( 3 ) To dismantle Pistons, the Cylinder head, carburettors, Air Silencer, Ignition wires, controls have to be dismantled. On the Cadillac, the sixteen Pistons & Rods could be removed with the… | ||
| img032 | Typed report detailing vehicle component faults and observations, page 4. | ||
| View original record | ( 4 ) 13) Front rubber buffers cut to pieces through hitting sharp edge of stop. 14) The white metal linings have picked up slightly. Flakes of white metal were found floating in the oil. On one… | ||
| img033 | Report listing component failures, modifications, and items being attended to. | ||
| View original record | ( 5 ) REAR TORSION ROD. 27) Spherical bearings insufficient lubrication, became worn in spherical bearings and floating bearing, rattled. 28) Connecting links for Torsion Rod. No lubrication to top… | ||
| img034 | List of numbered defects and cures for various vehicle components. | ||
| View original record | ( 6 ) 12) Fitting of extra plate on buffers stop has prevented lever fouling. 13) Larger diameter stop plate has prevented cutting of buffers. FRONT SUSPENSION. 17) Cured by extra asbestos packing,… | ||
| img035 | Issues with the rocker cover, radiator, ignition, and carburettors. | ||
| View original record | ( 7 ) There is too much oil in the rocker cover casing. The angle of the cylinder head causes a well of oil, which reaches above the joint cover, while the engine is running. It will have to be more… | ||
| img036 | Performance and issues of various vehicle components including suspension, steering, starter motor, dynamo, and gauges. | ||
| View original record | ( 8 ) FRONT SUSPENSION. Apart from the lubrication faults of the front suspension and the fouling which occurred, the condition of the front suspension is good. The Springs have not collapsed. No wear… | ||
| img037 | Vehicle condition and performance report detailing issues with the servo, damper, bodywork, and listing key metrics. | ||
| View original record | ( 9 ) SERVO. The servo has been efficient, and when examined was in a good condition. DAMPER CONTROL UNIT. We had during the first part of the mileage, a leak from the drive. Upon dismantling, the… | ||
| img038 | Faults with the headlamps, windscreen wiper motor, bodywork, and rear number plate illuminated unit. | ||
| View original record | -10- Headlamps. The N.S. headlamp has given considerable trouble. The earth wire has broken off the dipping unit. it is not supported and vibrates. The earthing of the bulb by a spider in the sides… | ||
| img039 | Report page detailing vehicle faults and performance metrics including tyre wear. | ||
| View original record | -11- The luggage grid chatters when folded up. The stop lamp and reversing lamp both gave trouble owing to poor earthing of the units. FACIA BOARD. The petrol gauge has at times been sluggish in… | ||
| img040 | Summary of findings and solutions for silent tappet issues on the J-III engine. | ||
| View original record | G.W. Hancock, Esq., Hotel de France, Chateauroux, Indre, France. HE/Rm.11/KW.16.4.34. I have now had a chance of going over the silent tappet job and seeing where we were getting to and the following… | ||
| img041 | Testing and development of rocker shafts, anti-surge valves, universal joints, and petrol pumps. | ||
| View original record | -2- (4) We are running with the rocker shaft pressure raised to 10 lbs/sq.in. and a slot cut in the ball relief valve seating equivalent to the area of a 1/16" hole. (5) The anti-surge valve caps… | ||
| img042 | Letter discussing design improvements and testing for shock damper elbows. | ||
| View original record | G.W.Hancock, Esq., Hotel de France, Chateauroux, Indre, France. 23-EX. Shock Damper Elbows. ------------------------- We thoroughly agree with your suggestion of combining elbow and alum cover as one… | ||
| img043 | From G.W.H. to Hs. listing eight mechanical issues with car 28-EX. | ||
| View original record | To Hs. From G.W.H. Hotel de France, Chateauroux, FRANCE. 8.4.34. 28-EX. We are holding the car up today to attend to the following items:- (1) Rear Propeller Shaft Coupling. This has completely… | ||
| img044 | 10,000-mile performance report on chassis 28-EX, detailing engine feedback and acceleration figures. | ||
| View original record | x7941 To Sg. from G.W.H. C. Wor. By. E.P. C. By. Mx. H.S. Hotel de France, Chateauroux, Indre. FRANCE. 23.4.34. REPORT ON 28-EX. AT 10,000 MILES. ENGINE UNIT P.II. NO.28. Vulture Type Cylinder Head… | ||
| img045 | Inspection report detailing the condition of engine components like connecting rods, pistons, cylinders, and valves. | ||
| View original record | -2- Connecting Rods. New oil pipes were fitted replacing the broken ones on No's 3, 6 & 4. No.5 was resoldered. We have not examined the rods, but there is no indication of them having again failed.… | ||
| img046 | The status and performance of a vehicle's clutch, servo, gearbox, and carburettor systems. | ||
| View original record | -3- CLUTCH & FLYWHEEL TO LOP.G.81043. M.SCH.39.26. 3531. 3934. Clutch with fabrics on driven member. External clutch adjustment. The engagement of the clutch has been on the jaggering side, and is not… | ||
| img047 | The performance and condition of various vehicle components following testing. | ||
| View original record | -4- CONTROL UNIT FOR HYDRAULIC DAMPERS. A breather hole was drilled in the top cover of the unit .0937" dia. This has improved the loss of oil from the unit, but is not the solution to loss of oil. We… | ||
| img048 | Condition report on various vehicle components including the wheelcase, ignition plugs, petrol tank, and universal joints. | ||
| View original record | -3- WHEELCASE & FITTINGS LOP.H.83692. The supply of oil as previously reported to the water pump drive and dynamo drive is in excess. There has been a slight leak from the water pump drive housing… | ||
| img049 | The performance of hydraulic dampers, the steering column and box, and the rear axle. | ||
| View original record | -6- HYDRAULIC DAMPERS AUTOMATICALLY CONTROLLED. Rear LOP.F.85733. Sch.411-468. Front LOP.F.85733. Sch.411-469. Strengthened main cylinders with smaller feet and increased dia. bolts. The dampers have… | ||
| img050 | Test report on steering tube friction, buffer clearances, and brake wear over mileage. | ||
| View original record | -86- SIDE STEERING TUBE & CROSS STEERING TUBE. LOP.F.79861.LOP.G.77482. The cross steering tube friction load taken at the beginning of the mileage was 135 ins.lbs. At 5000 miles it had dropped to 125… | ||
| img051 | Condition report on the electrical system components of a vehicle. | ||
| View original record | -9- ELECTRICAL SYSTEM. Voltage Controlled Dynamo. The Dynamo has given no trouble throughout the mileage. The commutator and brushes are in a good condition. There was very little dust in the end… | ||
| img052 | Letter discussing heat shield difficulties, results from comparative speed tests at Brooklands, and the performance of the Peregrine car. | ||
| View original record | G.W.Hancock from Hs/Rm. Hotel de France, Chateauroux, Indre, France. 87941. 3 Hs/Rm.8/AD15.7.32. T Many thanks for your various notes. I can appreciate the difficulty of the heat shield tests and do… | ||
| img053 | Engine features and failures for unit 19-EX after 5000 miles. | ||
| View original record | To Hs. From G.W.H. Hotel de France, Chateauroux, FRANCE. 14.7.32. REPORT ON 19-EX AT 5000 MILES. ENGINE UNIT NO. PH II 23. The following features and failures have occurred during this mileage. The… | ||
| img054 | Issues with pistons and the carburetter, including seized rings, carbon deposits, and flooding. | ||
| View original record | Pistons. Standard Production type E.793 It was then found that the two top rings had seized up and that all the piston ring stops had worn away to such an extent that they had broken off, one portion… | ||
| img055 | Valve, fitting, and petrol pump issues, detailing tappet wear, camshaft squeak, and petrol boiling problems. | ||
| View original record | -3- VALVES & FITTINGS. Double valve springs to LoC.2993. Improved Exhaust Valve E.83095 (S/SLV.) At a mileage of 4,000, No.6 tappet became noisy. It was found to have increased its clearance by .004"… | ||
| img056 | Component performance and modifications, including clutch, dampers, pedals, and exhaust fittings. | ||
| View original record | -4- The Inote's filter had a fair amount of very small fluff on the edges of the plates, and this was the probable cause of the pump failing to deliver petrol. It was reported on the test bed that it… | ||
| img057 | Exhaust system modifications and synchromesh gearbox performance. | ||
| View original record | -3- E.79094 Expansion Box made with 9 S.W.G. 1/- E.82071. Intermediate Pipe, with 13 S.W.G. 3/- Downtake pipe made straight, deleting present bend in pipe, 9 S.W.G. 3/- E.82567 Bolts S/SLV, fitted to… | ||
| img058 | Synchromesh mechanism failure, subsequent gear change tests, and modifications to the change gear lever and brakes. | ||
| View original record | -6- clutching effect is to substantiate our remarks upon the revolving mass. At an approx. mileage of 8870, we had a temporary failure of the synchromesh mechanism whilst changing from 3rd to top. The… | ||
| img059 | Inspection report detailing the condition of brakes, axles, and springs after road testing. | ||
| View original record | -7- were in a fine condition. The braking surfaces were a smooth glossy surface with no signs of ridges. It was not affected by a stone being dragged along this surface. The inner cooling fins had a… | ||
| img060 | Performance report on steering, springing, shock dampers, propeller shaft, and wheel carriers. | ||
| View original record | -6- The steering has been very good for absence of joggles on all except bad roads. On bad roads the joggles were not severe. The selectivity of the steering is considerably affected by the condition… | ||
| img061 | Failures and performance of a spare wheel carrier, radiator shutters, and bonnet during road testing. | ||
| View original record | -9- The Near Side spare wheel was noticed to have more movement after an approx mileage of 2700. Upon examination it was found that three of the bolts holding the carrier in conjunction with the… | ||
| img062 | Component performance including petrol gauges, water pump, magneto drive, and starter motor modifications. | ||
| View original record | -10- E.L. COX'S PETROL GAUGE. With the exception that on one or two occasions whilst filling up the needle has been inclined to stick, the petrol gauge has been very reliable, and is a decidedly a… | ||
| img063 | The performance and failures of a starter motor, automatic switch, dynamo, and battery components over mileage. | ||
| View original record | -11- The starter motor previously to the 10,000 miles test was taken to the ice factory and placed in a freezing chamber for 4 hours at a temperature 10° below freezing. A bench test was immediately… | ||
| img064 | The condition and issues of various vehicle components including the starter motor, ignition, jacks, and front apron. | ||
| View original record | -12- an approx mileage of 2900, causing a failure of the starter motor. It was noticed at the same time that the lugs from the plates had become loose in the bakelite casing, and looked as if they… | ||
| img065 | The Lucas horn, chassis and oil lubrication, consumption figures, and tyre mileage. | ||
| View original record | -13- LUCAS HORN. Fitted under front apron as shown on Drgt. F.61405. The position of the horn for English use may be practicable, but for continental use, the sound is too much screened to be of any… | ||
| img066 | Car performance, speed test results, carburettors, and arrangements for future testing in France. | ||
| View original record | G. Hancock, Hotel de France, Chateauroux, Indre, FRANCE. X794 From Hs/Rm. Hs/Rm.4/MJ.25.7.32. Thank you for your various notes. We are not worried about the speeds you give us being low, we think the… | ||
| img067 | Test report on car model 19-EX after a 10,000-mile run, detailing performance and issues. | ||
| View original record | Es C MP C of Wor- Hox5/T15.8.32. TEST OF 19-EX AFTER 10,000 MILES. Generally speaking the running of this car is very good. The engine smoothness is good and there does not appear to be any signs of… | ||
| img068 | Typed report detailing noise and performance issues with various vehicle components. | ||
| View original record | -2- Mx5/T15.8.32. This clearance on the average is only about .070" (2) Gear Lever. There is an irritating noise from the reverse plunger rod on the gear lever at certain speeds - this particular… | ||
| img069 | Analysis of piston stop failure, attributing it to crankshaft vibration and the twisting action of the connecting rod. | ||
| View original record | Hs. from GWH. 14.10.32. 19-EX. Pistons Failure. The failure of the piston stops is in our opinion due to crank-shaft vibration causing a twisting action of the connecting rod of a high period. This… | ||
| img070 | Sticking exhaust valves on car 19-EX and the oil level for a Peregrine gearbox. | ||
| View original record | C.W.Hancock Esq., Hotel de France, Chateauroux, Indre, FRANCE. From Hs/Cry. Hs/Cry.11/MA.6.2.33. 19-EX. Will you let us know whether there has been complaint of exhaust valves sticking on this car.… | ||
| img071 | Letter about the performance, design, and issues of 19-EX governor shock dampers. | ||
| View original record | Mr. G.W. Hancock, c/o Hotel de France, Chateauroux, Indre, FRANCE. To GWH. from Hs/Les. Hs/Les.l/KT.14.2.33. 19-EX GOVERNOR SHOCK DAMPERS. Thank you for your letters dated the 10th and 11th inst. We… | ||
| img072 | The performance of governor shock dampers, referencing test reports and comparing different setups. | ||
| View original record | -2- Hs/Les.l/KT.14.2.33. strengthened damper casings, which will be capable of dealing with greater loads. Your report dated the 4th inst. says that with the control in a maximum position "When… | ||
| img073 | The status of experimental cars 19-MX, 20-MX and 22-MX, and an urgent request for a Continental Phantom for testing. | ||
| View original record | To Sg. from Hs. C. Box. 19-MX. Replying to SgC/M21.2.33. From the photographs I have seen and the reports we have received, it looks as though 19-MX will be "written off". The car is on its way back… | ||
| img074 | Tests conducted on a Phantom engine to determine the effect of piston ring clearance on gumming. | ||
| View original record | To R. from Hs/ACL. c. to BJ. Wor. c. to RG. E. C. to BY. X741 Hs/ACL1/LG18.11.26. GUMMING UP OF PISTON RINGS. X.3996 X.741 X.1919 X.8040 We have made some tests on a standard Phantom engine to see… | ||
| img075 | Test results on piston ring 'gum up' tendency with varying groove clearances and ring stiffness. | ||
| View original record | Contd :- -2- Our tests indicate that there is less tendency to 'gum up' with large groove clearance than with small. A probable explanation is that increased clearance allows more movement of the ring… | ||
| img076 | Experiment report on piston ring gumming in a Phantom engine. | ||
| View original record | To H. from hc/AWH. c. to HJ. W.P. c. to RG. R. c. to BH. BY. PISTON GUMMING EXPERIMENTS. The influence of stiff and weak piston rings on the tendency to 'gum up' in the grooves has now been tested on… | ||
| img077 | The results of tests concerning the gumming tendency of rings with varying groove clearances and stiffness. | ||
| View original record | contd :- -2- hard carbon found in the previous test. Therefore we may say that from these tests :- (1) The gumming tendency is less with rings having large groove clearance than those having small… | ||
| img078 | Design of scraper rings for car or aero engines. | ||
| View original record | To Hs. From R. C. to BJ. RG. E. BY. +7+1 RL/1181.3.27. SCRAPER RINGS. X.2103 X.741 We don't want to be dependent on 'L' shaped rings on either cars or aero engines. There is the ring known as the… | ||
| img079 | Use and performance of tapered, 'faked', and lapped piston rings in car and aero engines. | ||
| View original record | To hs. From R. c. to BJ. RG. c. to BY. E. PISTON RINGS. K.2103 K.741 K.8040 K.998 I understand that we are using on both our car and aero engines, piston rings ground to a slight taper on the outside… | ||
| img080 | Oil consumption experiment on a Phantom test bench engine. | ||
| View original record | To R. From Hs/ACL. c. to BJ. Wor. c. to RG. E. c. to BY. Hs/ACLL/LG9.5.27. OIL CONSUMPTION EXPERIMENTS ON PHANTOM. An oil consumption test has been made on the Phantom test bench engine in which the… | ||
| img081 | The factors controlling over-oiling in Phantom engines. | ||
| View original record | To A. From Ho/ACL. C. to EH. C. to DR. C. to SH. C. to JM. 4740 AD/ACL/26.6.25 Y S480 FACTORS CONTROLLING OVER-OILING ON PHANTOM ENGINES ------------------------------------------------------ It is… | ||
| img082 | Report page discussing oil flow and consumption based on road tests of Phantom and Silver Ghost models. | ||
| View original record | contd :- -2- ...following curve supports this supposition and shows how the consumption on this particular Silver Ghost increases with an increase of the aggregate oil flow through the bearings. The… | ||
| img083 | Comparison of oil flow, pressure, and bearing clearances between the Phantom and Silver Ghost models. | ||
| View original record | contd :- -2- the one case. If however we plot these consumption curves on a pressure base we immediately notice a marked difference between the two curves - as shown here. For the Silver Ghost a… | ||
| img084 | Comparison of engine oil flow and pressure between Silver Ghost and Phantom models, detailing methods for reduction. | ||
| View original record | contd :- -4- feeds has proved to be a definite advantage than on the [unclear] oil flow is excessive. The average Silver Ghost with 20 lbs/sq.in. oil pressure at 1000 r.p.m. gives an oil flow of about… | ||
| img085 | Engine lubrication, oil flow, and the effectiveness of 'L' section piston rings. | ||
| View original record | cont'd :- -5- This engine has been tested at full load 27 H.P. on the bench and ran perfectly well without any sign of excess oil to pistons. When shut down it was guided by hand and examination of… | ||
| img086 | Analysis of oil consumption issues, their causes such as leaking rockers, and potential remedies. | ||
| View original record | contd :- -5- oiling tendency and in the majority of cases they have found to actually increase the consumption due to the suction past the baffles as the piston moves towards the end of its stroke.… | ||
| img087 | Report concluding that high oil consumption in the Phantom engine is due to the fit of bearings and piston rings, not a design flaw. | ||
| View original record | contd :- -7- to 3 pts/min. at 2500 R.P.M. This engine was fitted with piston rings similar to Silver Ghost - not 'L' shaped rings. Therefore in general we can say that high oil consumption on the… | ||
| img088 | And sketches detailing ring theory, focusing on hydro-dynamic wedges and oil flow. | ||
| View original record | Left Page: slightly higher wall pressure L Ring Theory OIL (VOID) Due to slightly higher resistance - contraction in the thickness section a tapered hydro-dynamic wedge is formed - which in one… | ||
| img089 | Historical summary of the first family of aero engines from 1916 to 1919. | ||
| View original record | 3. 1916-1919 The first family of Rolls-Royce aero engines In August 1914 Britains Royal Flying Corps and Royal Naval Air Service went to war with about 66 aeroplanes between them half of them British… | ||
| img090 | Modifications, tests, and issues observed on an experimental chassis. | ||
| View original record | T.C. Exp Ch 3213 Started 10,000 miles on road by day & dynamom. by 11.2.13 Both troubles seem to TC Exp32/B + timber limous body ch Date - Rec'd Landau body B.C.T for Na - modifn to rear springs seems… | ||
| img091 | Historical overview of the second family of aero-engines from 1919 to 1939, including the Kestrel, Buzzard, Schneider, and Merlin. | ||
| View original record | 5. 1919-1939 The second family of aero-engines - (Kestrel (F), Buzzard (H), Schneider (R) and Merlin) In the immediate post 1919 period the national economy and general policy had combined to decimate… | ||
| img092 | Chronological log of communications and decisions concerning the development of double rear brakes. | ||
| View original record | DOUBLE REAR BRAKES ① Bn to CJ 13.6.14 CJ to Wor 16.6.14 EP to Wor 25.6.14 D to Wor - cost & other 9-5-13 ✓ Wor to CJ " " 20-5-13 ✓ " " D Policy. 10,000 miles 30.5-13 ✓ " Na . EP opinions various incl… | ||
| img093 | Log of engineering memos, communications, and test results from late 1912 to early 1913. | ||
| View original record | No 1 R from D to CJ & TC from Donkh rear (crossed out) Crowborough Immediately - coupled & SAP 24-9-12 Dictated by TBB trans, brake equaliser? coupled sc.ab & stop engine flywheel on road wheels & add… | ||
| img094 | Log of progress notes, tests, and issues concerning double rear brakes. | ||
| View original record | DOUBLE REAR BRAKES (3) * R to C.J & Wo, Bx. Progress with tests? Pass cures for 21-2-13. 1) springing 2) clutch/vibration 3) Torsional creak/rd drum (Coronation rattles) 4) Desperate efforts needed,… | ||
| img095 | Log of handwritten notes detailing vehicle testing, component performance, and design modifications. | ||
| View original record | Pro & cons AW TSH Exp 2/B Gen Satisf exc when only axle period reduced 2-3-13 (1) 2 to Wor Dept memo. pro & cons met R - CJ. By. No. Wor. Push forward. Rectify minor. N.V. bad 8-3-13 (16) R. to ref… | ||
| img096 | Log of tests, issues, and correspondence regarding brakes, wheels, and other car components from 1913-1914. | ||
| View original record | Top of page: alf mathews - chassis 2300 signature. All ineffective - 3500 points (42A). D.R.B. (4) Main Entries: X 605 Te. Wor/Hy Hand Adj. for F. brakes on new car. 22-9-13 on flow to 2300. No… | ||
| img097 | Log detailing tests, issues, and modifications for brake and wheel systems. | ||
| View original record | MAIN LOG: X2 DUNLOP DET. WIRE WHEELS. pt adapted 22.09.13 D R Brakes 'Lighter drums - springing out of round'. Poor brakes. fouling of all cones at once. OK. Wt diff - 3 lb 6oz per wheel. DRB now to… | ||
| img098 | Compilation of handwritten notes and reports on vehicle performance issues, complaints, and tests from 1913-1914, seemingly highlighting conflicting information. | ||
| View original record | A Story of Duplicity (5) odd man out (34A) FHR to CJ PHB Wor Sp. 2301 mountaneering 28-5-13 again R/T for mounts Taken 4 days to for the journey. Roads mountainous & V bad. on cor[?]. Piston alt/d [?]… | ||
| img099 | Log of communications and reports regarding vehicle brake performance and related issues from mid-1914. | ||
| View original record | [Top of Page] ...for the aged, having special goggles. ... Pinoli alt/d to 3/8 for Std. 5/9 v m Fitter. 2/3/512. 5/9 m Ritter. 5-8" to 7/4" = 8" to 10". Bands were adopted @ Brooklands Hspdl. trials.… | ||
| img100 | Notes, reports and correspondence regarding issues and tests with brake linings, primarily Raybestos and Ferodo. | ||
| View original record | S of D D.R.B 'DOUBLE TROUBLE' ⑥ (Tom) * hint of asbestos fabrics * Raybestos * Ferodo to lining 1796 in RD It arrogates well Tom H says i) efficient * T.H. Harkness p.p Repair Dept. of D.R.B - only!… | ||
| img101 | Investigations into brake lining materials, performance issues, and potential solutions. | ||
| View original record | [Top left, red ink] Broken Raybestos Ferodo lining. 1796 in RD. [Top section, black ink] Hand grinding was tried - no worse than graphite grease (exactly). Lub. to be discouraged. Have now had letter… | ||
| img102 | Series of handwritten notes and reports discussing the performance, overheating, and wear issues of DRB brakes compared to older central brake systems. | ||
| View original record | DRB Astony & Duplex R to J, Radley coming to St Margaret's Bay - I think 9/10-7-14 (90) nor think it is necessary as we are getting the pros & cons of the DRB difficulties were ---. refer to 38 NA -… | ||
| img103 | Comparing different brake systems, their performance issues, and potential improvements. | ||
| View original record | of describing the peculiarities of the brakes quite adds to our stock of knowledge. A description of my present view - DRB so much better than the old Central one & overheating? getting too much? we… | ||
| img104 | Log of internal memos from 1914 detailing various vehicle performance issues, customer correspondence, and test results. | ||
| View original record | DRB 18 PB Wor/Mcr X2 Extract from C J memo of Aug 15. 24-8-14 Rad clogged w mud (too much) when it gets washed out foot brake works OK - when reapplied doesn't act. Wor asks Hy then comes on hard (too… | ||
| img105 | Log from June-July 1914 detailing vehicle technical issues, tests, and internal correspondence. | ||
| View original record | EP to Wor. Ref 17RB Mr Spottiswood's car 18-6-14 (69). FB not satisfactory needed taking up 3 times, how shoes sent? ask maeready for full report. [Red ink annotations: Old Spotty, Swiss alps, out of… | ||
| img106 | Log of internal correspondence and annotations regarding brake system development and testing. | ||
| View original record | DRB (9) [Red ink: POLICY CRYSTALLISES** IN R's MIND] R. to By. c Na. Will Na arr wk to control clutch hole - urgency - improvements needed. No pan m/c or retrospective action. As far as I can tell -… | ||
| img107 | Engineering log detailing brake development, material testing, and dyno/road test results from July-August 1914. | ||
| View original record | [Red ink annotations are in brackets] Wor by Hy. re By's items & processes & experiment reports. (106) 30-7-14 R - CJ. By & Wor re Spottiswoode's Eng. We really regret we had to trouble him for the… | ||
| img108 | Log of handwritten notes from 1914 detailing issues, tests, and modifications to vehicle brake systems. | ||
| View original record | DRB AL RIVERS (117) Wor/Hy (CJ.R. Hy.Na.) Rivets must contact drum for temp conduction to stop squeak. Copper ones & a few alum rivets do not wear down rivets & to date haven't come to any harm. I… | ||
| img109 | Series of handwritten notes and memos discussing brake performance, materials, and modifications. | ||
| View original record | Daimler, Bill Frakes steel drum more on N. Side traps. To get at it an Radley can seems lower leverage something in this phenomena. R's memo R5/B 21-8-14 plenty low enough now. other work all… | ||
| img110 | Series of brake system tests, performance evaluations, and proposed improvements. | ||
| View original record | DRB Re Bagshaw (939. How are we on new brakes? Slightly harder shoes - no change since. Problem to ensure we were not formally in future, watch by inspectors on m/c/g - then. Comparison between std &… | ||
| img111 | And annotations discussing the design, materials, and testing of brake shoes. | ||
| View original record | Cut thro. lightening hole - distortion may be reduced. (Also keep me informed, FAP, of further tests). R to Worthy. C.J. Na. By? Rivets rubbing, essential? Alum probably wear itself clear.… | ||
| img112 | Log of notes on various automotive topics and their corresponding dates. | ||
| View original record | SALAMANCA - 40/50 30.5-21 Steering & Safety SALAMANCA - CJ. criticism of R's DESIGN - NOT WELCOMED 9-1-22 R RAPSON TYRE on SCHOOL CAR 13-1-21 E riding DA 15-1-21 TOOL KIT - R of 4 pairs of leather… | ||