Rolls-Royce Archives

Rolls-Royce Experimental Archives: Box ExFiles\Box 144\3\        Box Selection

IdentifierEntry
scan0001 Note on an oil consumption test for vehicle 1200, conducted by Mr. Royce, comparing different oil brands.
View original record X986 3800 Oil consumption on 1200 - taken by Mr. Royce Engine running on Price's Motorine oil As compared with similar run on Valvoline should say car ran more full throttle. 382 miles on 4 1/2 pints…

scan0002 Oil consumption and engine performance for chassis 1419.
View original record x986 3800. Lubrication. Consumption of oil. Taken by E.P. Chassis 1419 - 3-10-10 - 58 lbs comprn. (gauge) Pistons (hollow top) intermediate plug cylrs. 140 miles used 5 gills - 896 m.p.g. Ignition…

scan0003 Engine test notes on oil and petrol consumption at different oil pressures.
View original record Oil consumption & Petrol consumption. x986 3800 (2200) Test engine taken while driving shaft. without fuel power 1100 rev as on 1500w losses. Verifort oil to cylinders. 6. lbs pressure. 7/64 holes. 3…

scan0004 Oil consumption during road tests for car models 741 and 736.
View original record Oil consumption X986 (Road tests) 3809. on 741 car. to Do Much Per Derby to Mn. practically full load on the G.P. no throttle. - oil fed to cylinders thro 3/64" holes open 1/4" of end of throttle. 3…

scan0005 Note detailing the results of oil consumption tests on chassis 1481 and 1491.
View original record R.R. 148 (20 H) (P 548.10.10.10 ) G 1130. X986 3P00. [crossed out]Oil Con[/crossed out] Lubrication Oil Consumption Tests. Taken by Holgate on Chassis No. 1481 on 31.12.10 over 130 miles 1 pint of oil…

scan0006 Record of oil consumption for 1907 'box' 60544 on a 50-mile run.
View original record Consumption of oil X986 3800 1907 box 60544. Run to Snake & back etc distance 50 miles consumes 3/4 pint. oil.

scan0007 Departmental memo regarding an investigation into engine oil consumption and its relationship to oil quality.
View original record R.R. 348A (100 H) (P 14. 21.4.10) E.P. 6547. DEPARTMENTAL MEMO. Issued 20th Sept. 1910 This column is for Name of Person addressed. DATE. Mr. Barrington. 20/9/10 AD28/D20910 In a letter dated the…

scan0008 Request for the quantity of lubricating oil and grease required for 5,000 miles of running.
View original record U Extra copy for Mr.Mercer. Re 15 CA - Baumann. Na/S5/LG3214. 3.2.14. Wor for Expt.Dept. EP. We are requested by the above customer to supply sufficient lubricating oil and grease for 5,000 miles…

scan0009 Best oils to recommend for cars in New York.
View original record R.R. 637. (100b) (V.V. 975. 1.5.14) E.P. 6536. ROLLS-ROYCE LIMITED, NIGHTINGALE ROAD, DERBY. TELEGRAMS: "ROYCAR," DERBY. TELEPHONES: 476 (Four Lines). Names and Indicating letter. Initial of person…

scan0010 Chassis weight and oil consumption for the 20 HP model.
View original record X986 BJ. from Hs. Hs2/LG16.3.23. 20 HP. CHASSIS WEIGHT. X4538 X986 OIL CONSUMPTION. With reference to your memos. in regard to the above. We have passed these memos. on to EP. as they are production…

scan0011 Request for data on the oil consumption of a standard car engine at full load.
View original record D To Wor. for EH. from M.Olley. Copy to E. Copy to Ne. MO6/IB241114. November 24th.1914. 25 NOV 1914 RECEIVED Mr. Royce would like to have data of the oil consumption (pounds of lubricating oil per HP…

scan0012 The lubricating oil consumption for a standard engine, with a note on a forthcoming test on a Mercedes engine.
View original record Wor/Mcr16/L261114. Re Consumption of lubricating oil on a standard engine. R. 26-11-14. Mr Olley.c. In reply to Mr Olley's memo M06/IB241114, Mr Hives reports as follows :- "An average engine uses…

scan0013 Testing procedures for lubricating oil consumption in a standard engine.
View original record To Wor. for EH from R. Copy to J. 2/12/14 COPY. R2/IB11214. 1st December 1914. Re Consumption of lubricating oil on a standard engine. Wor/Mcr16/L261114. With reference to the oil consumption per…

scan0014 Reduction in engine oil consumption after fitting Zephyr pistons.
View original record Wor/EHH/L101214 Re Oil Consumption. J. 10-12-14. R. B. Ns. On the same engine that we were using .044 lbs of oil per HP hour we fitted the Zephyr pistons and found that we could run these full power…

scan0015 Ongoing oil consumption testing of Zephyr pistons.
View original record 14/12/14 COPY. To Wor. for EH from R. Copy to J. Copy to E. Copy to Na. COPY R4/IB121214. December 12th. 1914 Re Oil Consumption. Wor/EH1/L101214. Thank you for your memo of December 10th. re oil…

scan0016 Cold weather testing for carburation, induction heating and the effects of oil viscosity.
View original record To Hs. from R. c. to BJ. CJ. c. to EP. BY. x986 R5/M1 8.11.25. X. 8080 X. 986. CARBURATION AND THICK OIL+ Now will be the time in France to test whether we have sufficient heating to the carburetter…

scan0017 Query regarding the possibility of removing felt glands from car engine valves to adopt double valve springs.
View original record To Hs. from E. c. to BJ. BY. 4986 E2/M23. 4. 27. RE. FELT GLANDS ON VALVE GEAR. X.8060 X.986 We should like to know if you consider it possible to do without the felt glands at present used on car…

scan0018 Oil consumption tests conducted on felt glands for Phantom engine valves.
View original record To E. from Hs/AJL. c. to BY. c. to BJ. X4590 X986 Hs/AJL1/LG23.4.27. FELT GLANDS ON VALVES. X986 X8060 The following tests were carried out to determine the value of the felt glands used on the…

scan0019 Oil consumption experiment on a Phantom engine comparing upward sloping drain holes to standard ones.
View original record To R. from Hs/ACL. c. to BJ. Wor. c. to RG. E. c. to BY. X986 Hs/ACL1/LG9.5.27. OIL CONSUMPTION EXPERIMENTS ON PHANTOM. X7-1 An oil consumption test has been made on the Phantom test bench engine in…

scan0020 Effectiveness of felt glands on valves and proposing alternatives to reduce oil consumption.
View original record To Hs. from E. c. to BJ. BY. E4/M30.4.27. FELT GLANDS ON VALVES. X.8060 X.986 We thank you for your Hs/AJL1/LG28.4.27. We should now like to know if these felt glands remain effective after ten,…

scan0021 High oil consumption due to a crankshaft leak, proposing to revert to a previous, more reliable oil retaining design.
View original record 4986 To Wor. from Hs/Rm. Hs/Rm2/T5.1.29. x 7010 With reference to SG3/E4.1.29, the high oil consumption is due to a leak from the rear end bearing of the crankshaft. We have altered the design of the…

scan0022 Issues with brakes and engine modifications for the 25 HP Japan model.
View original record COPY. X986. To Hs. From Sg. re. 25 HP. Japan. Sg26/21.9.30 X.5770. X.5360. X.5420. X.5080. X.5000. X.986. I have just seen RL/M20.8.30. Would you kindly send me a copy of your reply in regard to the…

scan0023 Responding to a query about a temporary brake failure and extra oil in the crankcase of a 25 HP car for Japan.
View original record COPY. X986. To Sg. From Hs. Hs.1/MJ.8.9.30. 25 HP. JAPAN. X.5770. X.5080. X.5360. X.5000. X.5420. X.986. Replying to Sg26/E1.9.30. We have sent you a copy of our Hs/Rn.8/MJ.5.9.30., which replies to…

scan0024 'Heat to Oil' tests carried out on a Phantom II, No. 7 engine.
View original record X986 Files. ---- 21.4.33. X4693. x. 7190 x. 986. REPORT ON "HEAT TO OIL" TESTS CARRIED OUT ON PHANTOM II. No.7. The engine used for these tests was P.II. No.7 E.79351, Lec.2736 standard crankshaft…

scan0025 Data table showing oil temperature, pump delivery, and heat transfer test results at various RPMs.
View original record -2- | RPM. | Oil Inlet Temp. | Oil Outlet Temp. | Temp Rise oC. | Time for 1 gall (secs) | Pump Delivery lbs/min. | Heat to oil BTU's/min. | Mean of last column. | |---|---|---|---|---|---|---|---| |…

scan0026 Bentley heat balance experiments, detailing the test unit's specifications and the methodology for determining heat distribution.
View original record To Sg. From Hs/Mths. c. to Wor. c. to R. c. to Rg. c. to By. c. to Lr. X 986 Hs/Mths.1/KW.13.2.34. BENTLEY HEAT BALANCE EXPERIMENTS. We have recently carried out experiments to determine the…

scan0027 Heat distribution analysis in an engine, including heat to oil, cooling water, and frictional losses.
View original record -2- Hs/Wths.1/KW.13.2.34. The figure for the heat picked up by the oil from the Piston Crowns we assumed as 30% of the total heat to the oil: this assumption is based on tests carried out on…

scan0028 Analysis of piston friction, heat loss, and mechanical efficiency at various engine speeds, comparing standard and Aerolite pistons.
View original record -3- Of these (1) amounts to 123.4 B.T.U's/minute or .674%, while (2) accounts for 23.7 B.T.U's/minute or .129%. The heat given to cooling water by Piston Friction amounts to 1080 B.T.U's/minute or…

scan0029 Analysis of engine heat flow, piston friction, and performance improvements from component changes.
View original record -4- by the crankcase, the less would have to be dissipated by the cooler so that the accuracy of our results may have been affected. The temperature of the Test House throughout the test was 24°C. or…

scan0030 Engine power output variations caused by piston skirt dimensions, with plans for further piston friction reduction tests.
View original record -5- Hs/ths.1/KW.13.2.34. We have from time to time had variations in the Power output of engines when using standard Pistons, and this we put down to the fact that the skirt diameter varies…

scan0031 Performance comparison graph between Aerolite and E.B. 1299 pistons.
View original record B.V. 19 COMPARISON BETWEEN AEROLITE & E.B. 1299 PISTONS CYLINDER HEAD WITH LARGE INLET (1.500 DIA) VALVE & SMALL EXHAUST (1.200 DIA) VALVE COMPRESSION RATIO 6.9:1 OPEN EXHAUST UNIT Nº B.6 (B.H.P.)…

scan0032 Graph comparing the mechanical efficiency of Aerolite & E.B. 1299 pistons against R.P.M.
View original record B.V. 20 COMPARISON OF MECHANICAL EFFICIENCY (AEROLITE & E.B. 1299 PISTONS) UNIT Nº B.6 I.H.P. 180 160 140 120 100 80 60 40 20 AEROLITE PISTONS E.B. 1299 PISTONS R.P.M. 500 1000 1500 2000 2500 3000…

scan0033 Comparative test of oil consumption using Wakefield's CW and Motorine C oils on chassis 3-B-IV.
View original record To Hs/Rm. x986 Hs/WB.5/KW.22.2.35. Oil Consumption Tests. On 3-B-IV we have carried out comparative oil consumption tests, using Wakefield's CW. and Motorine C, with a view to finding out if the…

scan0034 Inquiry into complaints of excessive oil consumption on Bentley vehicles, questioning if it is linked to the fitting of Aerolite pistons.
View original record W/K. c. to Va. (Paris). X1220 Hs/Rm.2/KW.22.2.36. From time to time we have heard complaints of the oil consumption being excessive on the Bentley. Recently statements have been made that the oil…

scan0035 Report analysing quarterly oil consumption returns from 1934 to 1936, investigating causes for increased usage.
View original record conf. X1220 B. EF. Guards Aerolite Pistons. Hs/Rm. K/KC/DPB/24.2.36. OIL CONSUMPTION. Reference your Hs/Rm.2/KW.22.2.36, I give below the returns concerning oil consumption since the first return made…

scan0036 Car oil consumption issues and performance comparisons between different quarters and models.
View original record - 2 - December quarter shews seven cars outside the affected area, the remaining two were fitted with Aerolite pistons, of which one case was suffering from a reversed rocker rod, the other car (newly…

scan0037 Investigations into complaints of excessive oil consumption on several Bentley chassis.
View original record conf. X1210 To Hs/Rm. D E R B Y Levallois VA9/ET.24.2.36 Sr.is absent Re: OIL CONSUMPTION ON BENTLEY CHASSIS With reference to your memo Hs/Rm2/KW.22.2.36, the following is a full report concerning…

scan0038 Engine issues, mileage, and repairs for four different car chassis.
View original record VA9/ET.24.2.36 - 2 - CHASSIS B.105.CW - Mileage 26,206 Miles - After the fitting of a set of drilled up type connecting rods complete with L.B.B.s, the engine oiled very badly. We sent the cylinder…

scan0039 Responding to a customer complaint about heavy oil consumption for chassis B.II8.BL.
View original record To Hd. Derby [Handwritten: VA] Levallois VA4/ET.21.2.36 Sr.is absent Re: CHASSIS B.II8.BL - Mr. SPENGLER Complaint of heavy oil consumption -------------------------------------- We have advised you…

scan0040 Potential causes and solutions for excessive engine oil consumption.
View original record VA4/ET.21.2.36 - 2 - In view of there being .003" working clearance between the crankpins and the L.B.B. bearings, plus the above mentioned wear in the cylinder bores, plus the holes in the centre of…

scan0041 Causes and investigation of high oil consumption on Bentley vehicles.
View original record X1220 To Hd. c. to K. c. to P. Hs/Rm.12/KW.11.3.36. Oil Consumption on the Bentley. We are anxious to get all the information we can about the oil consumption on the Bentley so that we may stop this…

scan0042 Measurement of lip wear at the top of the bore for Bentley 7 cylinders after 57,000 miles running.
View original record BENTLEY 7 CYLINDERS - MEASUREMENT OF LIP AT TOP OF BORE AFTER 57,000 MILES RUNNING CYLINDER - EB.89 - 1/c Diagrams: Top Left Diagram: FORMATION OF LIP AT CROWN Dimensions: .125", .375" Bottom Left…

scan0043 Cylinder bore dimension measurements for a Bentley '7' Unit after 57,000 miles of running.
View original record TITLE: BENTLEY '7' UNIT - AFTER 57,000 MILES RUNNING - CYLINDER BORE DIMENSIONS DETAILS: CYLINDER BLOCK:- E.B. 89. - MATL Y/e DRG: SIZE BORE: 3.250+.1. NOTE: DIMS. 'AA' TAKEN AT RT ANGLES TO C'SHAFT.…

scan0044 Oil consumption issues and resolutions on a Bentley vehicle.
View original record Hs/Rm. K/KC/23.3.36. OIL CONSUMPTION ON THE BENTLEY. Reference your Hs/Rm.12/KW.11.3.36, I am afraid we have very little definite information at K which we can place at your disposal, regarding oil…

scan0045 Explanatory note on interpreting measurements listed in a 'Remarks' column.
View original record - 2 - Remarks column (as in the first example given) the amount over nominal, i.e., plus 1 signifies plus .001" on nominal. K/KC.

scan0046 The wear measurements for engine bores and pistons for chassis B 60 FB.
View original record REPORT RE WEAR IN BORES & PISTONS. Fitter: Trotts Chassis No: B 60 FB Date: 13. 3. 36 Job No.: 3182 Mileage: 3120 BORES TABLE NOMINAL. | TAPER. | OVAL. 1: 3.250" S | + .0035" | .0005" 2: S | + .003" |…

scan0047 Log sheet detailing cylinder wear measurements for various chassis in February 1936.
View original record Particulars of cylinder wear February 1936 Showing amount plus nominal and oval in thousandths of an inch. Date Chassis Mlge: No:1. No:2. No:3. No:4. No:5. No:6. Remarks 4: 2:36 B.158 D.G. 7899 .002…

scan0048 Oil consumption on Bentley cars, related to the bedding-in period of new piston rings.
View original record W/K - KC. Hs/Rm.7/KW.27.3.36. Oil Consumption on the Bentley. Many thanks for K/KC/23.3.36. and for the information contained therein. We think one point which is not generally realised is that with…

scan0049 Log of daily oil consumption figures, in miles per gallon, for a Bentley (B-56-BN) and a 25 HP (22-G-V) vehicle.
View original record Daily oil Consumption Figures. Bentley (B-56-BN) MILES RUN 25 HP. (22-G-V). MILES RUN 11.3.36. 360 m.p.g. 9/10.3.36. 525 m.p.g. 12.3.36. 621 " 11.3.36. 525 m.p.g. 13.3.36. 609 " 13.3.36. 518 "…

scan0050 Internal memorandum discussing high oil consumption complaints on Bentley models.
View original record To Hd. from Rm. c. to E. c. to By. X1220 Hs/Rm.7/KW.5.6.36. Oil Consumption on the Bentley. We notice that in the Quarterly Complaints for the March quarter of this year there are 48 cases of high oil…

scan0051 Log sheet detailing oil consumption, mileage, and total mileage recorded on specific dates.
View original record -2- Hs/Rm.7/KW.5.6.36. Date Oil Consumption Mileage Total Mileage 11.3.36. 360 M.P.G. 410 410 12.3.36. 621 " 391 801 13.3.36. 609 " 456 1257 14/15.3.36. 615 " 471 1728 16.3.36. 642 " 306 2034 17.3.36.…

scan0052 High oil consumption issues, piston ring performance, and the need for re-boring cylinders.
View original record -3- This was under high average speed conditions, and towards the end of the test the bearings became very badly scored. This test indicates the point we have previously made, which is that since…

scan0053 Page discussing the investigation of a bad case and a report on rings for depots.
View original record -4- Hs/Rm.7/KW.5.6.36. (3) We want the opportunity of investigating a bad case in the Experimental Dept. (4) A report on the rings, a small quantity of which we shall despatch to Depots, to be fitted…

scan0054 Excessive oil consumption in various car models, with a suggestion to order new scraper rings.
View original record X1220 Cx5/KW5.6.36. S/W. Rm. c. to Sg c. " Wor. c. " E. c. " EP. Matthews. - Please return for file. We should order immediately some special turned scraper rings for the 20/25. (3 sets off). You may…

scan0055 Investigation into high oil consumption on a 20/25 HP model.
View original record X1220 W/S - Cx. c.to Sg. c.to Wor. c.to E. c.to EP. Hs/Rm.5/KW.8.6.36. 20/25 HP. Oil Consumption. With reference to Cx.5/KW.5.6.36. This matter is of considerable interest to us, as we have for some…

scan0056 Heavy oil consumption on the 20/25 HP model during testing.
View original record x1220 To RHC. Hs/Rm.10/KW.22.6.36. 21-G-IV - Oil Consumption on the 20/25 HP. We have bumped into heavy oil consumption on 20/25's on test. Wor. is using GAE-20, which has the only up-to-date 20/25…

scan0057 Oil and petrol consumption test results for a GAE-20 engine unit over a 195-mile run.
View original record X1220 To Hs/Rm. Hs/WB.29/KW.22.6.36. Oil Consumption GAE-20 - Unit C-18. Standard production unit other than E.61044 exhaust valves, KE-965 (stellited tips and seats); EB.175 Bentley valve springs.…

scan0058 Comparison of piston ring details and oil consumption between Chevrolet and Bentley engines.
View original record 4220 FILES. 23rd June, 1936. Comparison of Piston Ring Details and Oil Consumption. The rings compared in this report are those used on the Chevrolet and Bentley engines and although there is a wide…

scan0059 Specification sheet comparing different types of piston rings.
View original record -2- Compression Rings. (E.60820). Tangential load = 1.954 lbs. Dial of ring = 3.500 Width = .0937 Radial thickness = .120 Cylinder wall pressure. = 11.9 lbs./sq.in. Ratio Cylinder dia./Radial…

scan0060 Comparison of specifications for Stepped and Plain type compression rings.
View original record -3- Compression Rings (Stepped type). Tangential load = 5.234 lbs. Dia. of ring. = 3.312 Width (total) = .123 Width (bearing) = .073 Radial thickness = .142 Cylinder wall pressure = 43.3 lbs./sq.in.…

scan0061 Comparison of piston ring properties, manufacturing methods, and performance.
View original record -4- rings vary as much as 15% but even allowing for the fact that we may have a set of the strong rings and assuming their variation to be similar to our own they would still have a considerably…

scan0062 Comparison of different engine oils' consumption and viscosity, with notes on upcoming piston ring tests.
View original record -5- TYPE OF OIL, CONSUMPTION PTS/HR., REDWOOD VISCOSITY 110°C. 0°C. Castrol "Z", 1.75, 43.0, 7250 Castrol "C.W"., 2.75, 43.0, 9000 Castrol "XXL", 1.75, 79.0, 32500 Mobiloil "Arctic", 1.97, 44.0, 2600…

scan0063 Specifications, tests, and material analysis for Chevrolet rings.
View original record Further Particulars of Chevrolet Rings. A ( To require a load of 9 lbs. min. (11 to 12 lbs. desired) (applied at 'W' and supported at 'R' to close gap in ring. B Rings must pass light gauge test 100%…

scan0064 Brief report on oil and petrol consumption figures from a 2,500-mile test.
View original record To Hs/Rm. X1220 EP.20/25.6.36. 18-G-IV. Oil consumption over 2,500 miles works out at average 460 m.p.g. Checks show consistant throughout over 4 long runs - varies 480 - 440 - 450 - 460. Petrol…

scan0065 The oil and petrol consumption for a C.16 Unit Standard Engine test run.
View original record On file To Hs/Rm. Y22 Hs/WB.14/JH.29.6.36. 21-G-IV - C.16 Unit Standard Engine. Run 26.6.36. An oil consumption run taken over the same course as the previous run on GAE-20. Miles run 190 Average…

scan0066 Repeat oil consumption test run for a 21-G-IV C-16 Unit Standard Engine.
View original record To Hs/Rm. Hs/WB.17/JH.30.6.36. 21-G-IV - C-16 Unit Standard Engine. A repeat oil consumption run Derby - Oxford and return. Miles run 185 Average water Temp. 30°C. Average speed 44.4 m.p.h. " Oil "…

scan0067 Test report on oil and petrol consumption for unit C-16 during a road test to Oxford and back.
View original record To Rm. XG20 Hs/WB.7/KW.3.7.36. Oil Consumption - 21-G-IV. Unit C-16. { 'D' type 32.2 sq." lbs. scraper rings fitted to pistons; otherwise standard. Oxford and return. Oil used 4.25 pts. Average air…

scan0068 Requesting daily reports on the oil consumption of a Trials car.
View original record x1220 W/S - Cx. Hs/Rm.12/KW.3.7.36. Trials Car Oil Consumption. You were going to let me know the oil consumption of the Trials car from day to day. I shall be glad of this information to enable us to…

scan0069 High oil consumption in 25/30 HP models and the need to fast-track a new piston ring design.
View original record X1220 S/W Hs/Rm. C5/C3.7.36 Re Oil Consumption on the 25/30 h.p. We have now delivered quite a number of these to the Public and, of course, the oil consumption to start with is very bad. To those…

scan0070 Oil consumption for unit C.16, detailing test run metrics and component specifications.
View original record X1220 To Hs/Rm. Hs/WB.6/JH.7.7.36. Oil Consumption 21-G-IV - Unit C.16. D type 32.2 sq/inch.lbs. scraper rings fitted to pistons, otherwise standard. Total miles to date on these rings 683. Oil used…

scan0071 Customer complaints about high oil consumption in new 25/30 models.
View original record COPY. To Hy. from Sg. copy to H. Sg2/E8.7.36. re Oil Consumption on 25/30's. Would you please see LA2/T6.6.36 written to Lillie Hall and I attach copy of C5/C3.7.36 to Hs/Rm. to which no reply has…

scan0072 Test results for oil consumption on Unit U7S with standard piston and rings.
View original record To Hs/Rm. X1220 Hs/WB.9/JH. 8.7.36. 18-G-IV Oil Consumption. - Unit U7S: Standard Piston and Rings. Total mileage to date 6253. Miles run 201 Average speed 42 Oil used 5¾ pts. Oil cons. 281 m.p.g…

scan0073 Calling a conference to discuss a serious complaint regarding 25/30 HP oil consumption.
View original record Mr. from Hy. MB. By. Rm. Mr. Lr. V220 Hy5/R.8.7.36. 25/30 H.P. OIL CONSUMPTION. Will you kindly attend a Conference at 10.30. to-morrow morning, the 9th instant, in Wor's room, to discuss a serious…

scan0074 Calling a conference to discuss a serious complaint about 25/30 HP oil consumption.
View original record M. from Hy. Hs. Hly. Hy. AT. x820 Hy5/R.S.7.36. 25/30 H.P. OIL CONSUMPTION. Will you kindly attend a Conference at 10.30. to-morrow morning, the 6th instant, in Wor's room, to discuss a serious…

scan0075 Test report on oil consumption for unit U.75 using standard piston rings.
View original record X1220 To Hs/Rm. Hs/WB.11/JH. 9.7.36. 18-G-IV Oil Consumption Unit U. 75. Standard piston rings. Total mileage to date 6448. This run with breather pipe turned upwards. There is no breather from rocker…

scan0076 Letter discussing the investigation of a customer's car's high oil consumption and potential causes.
View original record Mr. R. Matthews, Rolls-Royce Representative, Cricklewood. Hs/Rm.5/KW.9.7.36. I spoke to Br. this morning and was emphatic that we must get an oil consumption on this customer's car before it is pulled…

scan0077 Telegram about an overoiling issue in London traffic and a potential solution.
View original record X220 MATTHEWS. ROLLS-ROYCE REPRESENTATIVE. SILVAGOST, CRICKLE, LONDON. IF OVEROILING OCCURS IN LONDON TRAFFIC ENSURE VALVE GRUMMETS ARE NOT CONTRIBUTING TO TROUBLE. ROBOTHAM.

scan0078 The oil consumption of the 25/30 HP engine, detailing the risk of piston seizures if consumption is too low.
View original record W/S - C. Hs/Rm.8/KW.9.7.36. Oil Consumption - 25/30 HP. C5/C.3.7.36. We fully appreciate the undesirable condition of the 25/30 with regard to oil consumption as at present being delivered to…

scan0079 The oil consumption of trial cars GUL-82 and GUL-1.
View original record S/W. Rm. Trials Car Oil Consumption. Cxll/KW9.7.36. In reply to your Hs/Rm.12/KW3.7.36, RC reports that GUL-82 has now covered 2,925 miles and consumed 4 1/2 gallons of oil, an average of 650 m.p.g.…

scan0080 Investigating the high oil consumption on the 25/30 Chassis, comparing piston and ring arrangements with other models.
View original record To Sg. from Hy. Copy to W/S. H. Copy to BY. DA. Rm. MX. OWR. Re Oil Consumption on 25/30 Chassis. I am in receipt of your SG2/E8.7.36 and have investigated the matter thoroughly in conference with BY.…

scan0081 Tests on modified rings and the trial of three-ring pistons.
View original record Contd:-2- HY6/T9.7.36 contd: Rm. has tests in hand with a view to effecting improvement by means of modified rings, but there is nothing which can be confidently recommended at present. After our…

scan0082 Expressing shock and concern over high oil consumption in the 25/30 chassis due to a piston ring design change.
View original record To E. from Sg. To Hs. from Sg. Copy to Hy.H. Oil Consumption on 25/30 Chassis. I attach copy of Sg2/E8.7.36 and copy of Hy's reply. I am sorry you were not able to be present at the discussion which…

scan0083 Procedure for measuring oil consumption in trials cars.
View original record X220 W/S - Cx. Hs/Rm.1/KW.13.7.36. Trials Car Oil Consumption. Cx.11/KW.9.7.36. Our main interest in these cars centres round the rate at which the oil consumption improves. If therefore you could…

scan0084 Major complaints of high oil consumption and clutch trouble, proposing solutions and further testing.
View original record H220 W/P - Mr. Hancock. Hs/Rm.4/KW.13.7.36. Many thanks for your notes, which are most informative. As I mentioned to you on the 'phone, I think for cases of defective work the correct solution is to…

scan0085 Oil consumption test on unit U-7-S during a run to Sheffield.
View original record To Rm. X220 Hs/CL.5/KW.14.7.36. 18-G-IV - Oil Consumption. Unit U-7-S. Car run to Sheffield by Lovesey. Standard piston rings. Total mileage to date 6367. This run with breather pipe turned upwards.…

scan0086 Oil consumption test results for engine unit 21-G-IV, C-16.
View original record To Rm. X/22D Hs/WB.3/KW.14.7.36. Oil Consumption - 21-G-IV. Unit C-16. Originally the above unit was fitted to 21-G-IV as a standard engine. The first run taken over 190 miles (Oxford and return) gave…

scan0087 Oil consumption on the 25/30 HP chassis, piston performance, and testing.
View original record To Sg. from Rm. c.c. to E. c.c. to Hy. c.c. to H. Hs/Rm.19/KW.14.7.36. Oil Consumption on 25/30 HP. Chassis. There are one or two points in connection with this difficulty which have not been…

scan0088 Improvements to the 25/30 HP engine's oil consumption and investigations into piston faults.
View original record -2- Hs/Rm.19/KW.14.7.36. There is no doubt that we can improve the 25/30 HP. oil consumption. The difficulty is to do anything in a very short time and be certain that it will not later lead to piston…

scan0089 Graph plotting oil consumption in M.P.G. against distance for 25 HP models during 10,000-mile tests.
View original record 25 HP 10,000 MILE TESTS OIL CONSUMPTIONS 14 7 36 LEGEND: ① 22 GY MARCH 1936 ENGLAND ② 22 GY APRIL 1936 FRANCE ③ 21 GIN AUG 1935 FRANCE ④ 21 GII NOV 1934 FRANCE AXES: Y-AXIS: OIL M.P.G. X-AXIS:…

scan0090 Line graph plotting Bentley oil consumption in M.P.G. over a distance of up to 8,000 miles from various tests.
View original record 10,000 MILE TESTS. BENTLEY OIL CONSUMPTIONS. OIL M.P.G DISTANCE COVERED IN MILES 56 B.IV MARCH 1936 ENGLAND 5 B.IV APRIL 1935 FRANCE 4 B.IV JULY 1934 FRANCE 56 B.IV OCT. 1935 FRANCE L.E.S

scan0091 Interchangeability and fitting of turned scraper rings from Bentley models to the 25/30HP model.
View original record Y220 Hy By Hs/Rm MX6/T13.7.36 25/30HP OIL CONSUMPTION At a Conference on the above the question of turned scraper rings was discussed. Hy had a 25/30 piston with a turned ring fitted. We find on…

scan0092 Oil consumption test run to Oxford and return.
View original record X1220 To Rm. Hs/WB.9/KW.15.7.36. Oil Consumption Run (Oxford & return) GAE-20. Unit C-18. Standard production other than E.61044 Exhaust valves, KE-965 stellited tips and seats, EB.175 Bentley valve…

scan0093 Oil consumption for unit C-16 during an evening test run to Buxton and return.
View original record To Rm. X1270 Hs/WB.8/KW.15.7.36. Oil Consumption - 21-G-IV. Unit C-16. 32.2 sq.in.lbs. scraper rings. Otherwise standard engine. Total miles to date 1683. Oil used 1 pint. Miles run 80. Average speed…

scan0094 Oil and petrol consumption statistics for engine unit C-16.
View original record To Rm. X1220 Hs/WB.7/KW.15.7.36. Oil Consumption - 21-G-IV. Unit C-16. 32.2 sq.in.lbs. scraper rings. Otherwise standard engine. Total miles to date 1603. Oil used 4½ pints. Miles run 205. Average…

scan0095 Oil consumption data for unit GAE-20.
View original record X1220 To Rm. Hs/WB.jl/KW.17.7.36. Oil Consumption - GAE-20. Unit C-18. Standard pistons and rings taken out of GUL-59 at Cricklewood. Average speed 44 M.P.H. Oil used 4½ pints. Oil Consumption 380.4…

scan0096 Oil consumption test run for a Chevrolet vehicle to Oxford and back, noting engine performance issues.
View original record X1220 To Rm. Hs/FW.6/KW.31.7.36. Oil Consumption Run on Chevrolet - Oxford and return. Distance - 225 miles. Average speed 40.9 M.P.H. Oil added - ½ pint. Oil Consumption 3,600 M.P.G. Average air…

scan0097 Letter discussing oil consumption issues with the Big Bore 20/25, a new piston ring solution, and urging attendance at the T.T. Race.
View original record X1220 Sr. From Hs/Rm. Hs/Rm.5/MJ.8.8.36. Dear Sr., As you probably know, we bumped into trouble with the Big Bore 20/25 oil consumption. In getting out of this trouble we found a very effective piston…

scan0098 Two approaches to solving high oil consumption on the 25/30 model.
View original record X1220 To Sg. & Mor. From Hs/Rm. c. to C. c. to R. c. to Hy. c. to Mx. d. to Da. c. to He. Hs/Rm.1/MJ.8.8.35. HIGH OIL CONSUMPTION ON THE 25/30. This problem has been attacked in two ways - (1) A four…

scan0099 Modifications to piston rings to improve oil consumption on certain models.
View original record -2- Ha/Rm.1/MJ.H.S.30.Cont'd. section piston rings. This is the standard ring with a piece turned out at the back to make it 'L' shaped as in the attached sketch. These rings were fitted on production…

scan0100 Oil consumption tests for the 20/25 Programme and Bentley models, detailing piston ring configurations.
View original record (Swdl. From Hs/Rm. (Mths. Y 1220 Hs/Rm.5/MJ.10.8.36. OIL CONSUMPTION. 20/25 PROGRAMME. Tests of four-ring pistons. (a) Stopped as instructed. Measure blow-by. (b) Unstopped. Plain high pressure gas…

scan0101 Outlining a four-point programme to address top overoiling for the P.111.
View original record V 1220 To Swdl. From Hs/Rm. c. to F. Dodd. Hs/Rm.4/MJ.10.8.36. TOP OVEROILING. P.111 PROGRAMME. (1) Valve springs. Check good ones. (2) Check what close clearance inlet valves are worth. (1 1/2 - 2…

scan0102 25/30HP oil consumption test, investigating the effect of 'L' shaped rings and connecting rod modifications.
View original record Matthews X1220 Hs/Rm from Mx. CToG.W.H. Re. 25/30HP Oil Consumption Test and the fitting of 'L' shaped rings. In order to determine the effect of 'L' shaped rings, we took a standard production…

scan0103 25/30 HP engine oil consumption tests comparing standard and L-shaped piston rings.
View original record +1220 To H. c. to WOT. c. to Hy. c. to EX. c. to Hd. HE/FD.12/JH.1:8.36. 25/30 HP Oil Consumption Tests. In conjunction with the test beds, we have carried out oil consumption tests on GAE-20 and…

scan0104 Blueprint detailing the specifications for a section piston ring.
View original record Standard Wall Press 12-14 Lbs / Sq", L Section Wall Press 5-6 Lbs / Sq", RADIAL THICKNESS, .120 +4 -4 (EXISTING), .050 -5, 3.380 DIA +15 -5, 45°, CLOSED GAP .006 +2 -2, .0937 -1/2, .025 RAD -10, 3.500…

scan0105 Tests conducted to investigate excessive oil consumption in the 25/30 model.
View original record x 1220 To E. C. to WOR. C. to Hy. C. to Hx. Me/Swdl.S/JH.11.8.36. 25/30 Oil Consumption Tests. Following the excessive oil consumption figure, consistently obtained both on the production and…

scan0106 Tests conducted on various scraper and compression rings to control oil consumption.
View original record -2- Various forms of supposedly more efficient scraper rings were tried without any appreciable success and consisting of the following. (a) Rings with wall pressure ranging from standard at 20…

scan0107 The testing and development of piston rings, including L-section types, to improve engine oil consumption.
View original record -3- They are slightly different in the respect that the sides of the Phantom ring (E.73287) had a .002 taper, whereas we have left the rings with a normal straight side. These were an immediate…

scan0108 Piston ring experiments, detailing issues with L-section rings, blow-by, oil consumption, and proposed solutions.
View original record -/4- We cannot definitely explain why the L section ring is so effective and maybe due to any or a collective result of the following. (a) Improved scraping as the shape of the ring suggests. (b) Gas…

scan0109 Piston and oil consumption tests comparing different scraper rings and components.
View original record -5- We are however trying this piston with and without stops. From the tests we have carried out we conclude that the existing scraper is not doing the amount of work we anticipated and with this in…

scan0110 Comparison of two oil consumption tests for the 21-G-IV engine with different piston ring and connecting rod setups.
View original record To Hs/Rm. X 1220 Hs/FD.9/JH.24.8.36. 21-G-IV Oil Consumption Tests. Previous Report 7.8.36. 22.8.36. 1. middle L shaped ring fitted. As previous with connecting rod, oil holes filled up. Average oil…

scan0111 Need for more data to investigate ongoing complaints of excessive oil consumption and overoiling on Bentley cars.
View original record To Hd. c. to Sg. c. to Wor. c. to E. c. to By. c. to GWH. X1220 Hs/Rm.15/AW.31.8.36. Excessive Oil Consumption & overoiling on the Bentley. Referring to the Quarterly Complaint list just issued,…

scan0112 Analysis of customer complaints regarding excessive oil consumption and over-oiling in Bentley chassis.
View original record Hs/Rm. c to Sg. c to Wor. c to Br. c to GWH. X1220 Hd/SB8/HR.1.9.36. re EXCESSIVE OIL CONSUMPTION AND OVER-OILING. Bentley Chassis. With reference to Hs/Rm15/KW.31.8.36., we can only give you an…

scan0113 Continued report page discussing the bedding-in of piston rings during vehicle testing.
View original record - 2 - Hd/SB8/HR.1.9.36. Continued:- cannot tell on test whether any improvement has been made, because of the necessity for running the car long enough to allow the piston rings to become bedded in.…

scan0114 The investigation into the cause of top overoiling on the Phantom III engine.
View original record To M. c. to Sg. c. to Wor. c. to By. c. to Da. c. to Mx. Top Overoiling on the Phantom III. We have been going into the question of top overoiling very seriously. We find that all our experimental…

scan0115 Experiments with various bottom washers, grommets, and valve stems to improve performance and reduce costs.
View original record -2- Hs/FD.17/KW.2.9.36. Various shapes of bottom washers have been tried, the best results have been obtained using a Bentley valve guide, grummets and bottom washer so arranged that the grummet had…

scan0116 Request for information and procedure for measuring oil consumption on the Phantom III model.
View original record X1220 W/S - Cx. Hs/Rm.15/KW.30.9.36. Oil Consumption - Phantom III. We are anxious to get some information on the oil consumption of Ph.III's in service. To get reliable figures it is necessary to…

scan0117 Short memorandum concerning providing further figures on oil consumption for the Phantom III.
View original record Rm X1220 S/W. Hs/Rm. Oil Consumption - Phantom III. Cx7/KW1.10.36. With reference to your Hs/Rm.15/KW30.9.36, we hope to send you shortly some more figures on this question. Cx. suy

scan0118 Excessive oil consumption and over-oiling complaints for Bentley vehicles.
View original record X1270 To Hs/Rm. Bentley. Excessive Oil Consumption and Over-oiling. I have received your memo. Hs/Rm.15/KW.31.8.36. Before writing my report on Bentleys I checked over the various complaints with Mr.…

scan0119 Summary of Chevrolet consumption test results.
View original record To Rm. X1220 Hs/FD.8/KW.7.10.36. Chevrolet Consumption Tests carried out on 30.7.36. Average speed 40.9 M.P.H. Petrol consumption 12.5 M.P.G. Oil consumption 3,600 M.P.G. Hs/F.Dodd.

scan0120 Letter to The Perfect Circle Ring Co. in the USA, concerning oil consumption problems with a six-cylinder engine.
View original record X 1220 Exptl. Dept. Hs/Mths.16/KW. 13th October, 1936. The Perfect Circle Ring Co., Hagerstown, Ind., U.S.A. For the attention of Mr. Ralph R. Teetor. Dear Sirs, We are taking the liberty of writing…

scan0121 Piston ring radial thickness and pressure for an engine, comparing practices with those in America.
View original record -2- Now to the points we should like to raise - Radial Thickness. What do you consider should be the radial thickness of rings for this type of engine ? We know that generally in America you use a…

scan0122 Performance and design of different types of piston rings.
View original record -3- Ring Finish. We notice that most American rings have a fine turned finish on the periphery, do you think this is an advantage in getting the rings to give a normal consumption without a long…

scan0123 Questionnaire regarding the design and specifications of piston rings.
View original record -4- Hs/Mths.16/KW.13.10.36. Side Clearance. What do you consider to be the correct side clearance of rings ? What effect has increasing or decreasing this clearance ? Our existing piston has side…

scan0124 The manufacturing and performance of engine rings and pistons.
View original record -5- Forming of Rings. Do you consider that more reliable rings can be produced by heat forming against hammer forming? We notice that practically no American ring is hammered. What are the…

scan0125 Letter requesting information on acceptable cylinder bore irregularities and their effect on oil consumption.
View original record -6- Hs/Mths.16/KW.13.10.36. Cylinder Finish. What do you consider to be a fair figure for irregularities in the cylinder bore ? By this we mean how much do you think the bore diameter may vary before…

scan0126 Successful trial for top over-oiling on the Phantom III engine.
View original record To E. c. to SS. c. to ROX. c. to Hy. c. to En. c. to Ex. X1220 Hs/PD.16/JH.15.10.36. Top Over-oiling on Phantom III. With reference to your memo. A.2/HP.3.10.36. and the suggestion of running a test…

scan0127 Excessive oil consumption on the Bentley 4¼ litre chassis and potential solutions.
View original record W/P - Sr/VA. X1220 Hs/Rm.8/KW.15.10.36. Excessive Oil Consumption on Bentley 4¼ litre Chassis. We have your note with Sr/VA.1/ET.13.10.36. On all the 4¼ litre Bentley cars we have the extra oil hole…

scan0128 The oil consumption of a 25/30 HP engine, vehicle 22-G-V, after fitting a new cylinder block and 'L' shaped rings.
View original record X1226 To Sg. & Wor. c. to H. c. to By. c. to Mx. c. to Hd. c. to Br. Ha/Rm.11/KW.15.10.36. Oil Consumption of the 25/30 HP. We have received the following report regarding 22-G-V, now running with the…

scan0129 Notes on information required regarding oil consumption.
View original record 1220 To Rm/Mths. from Rm. OIL CONSUMPTION Some notes on information still required on oil consumption. - 1. Oil consumption under light load on the road to check up on H.P. rings. 2. Cylinder bore…

scan0130 Engine oil consumption tests comparing different piston ring configurations.
View original record File 1220. Rm. 18.11.36. G.A.E. 20. OIL CONSUMPTIONS. (1) Pistons fitted with 2 L. section rings. 5.8.36. Oil consumption. = 1300 m.p.g. (2) Pistons fitted with 1 L section ring 5.9.36. Oil…

scan0131 Oil consumption figures for a Bentley 3.B.1V, Unit B.18, after a test run with new parts.
View original record J1220 To Rm. from Rm/FD. 8.12.36. Herewith Bentley 3.B.1V. Unit B.18. oil consumption figures with sealed power single cast rings. Fitted to a new cylinder block with new pistons a complete set of…

scan0132 Oil consumption results for Bentley Trials Cars B-2-GA and B-3-GA.
View original record S/W. Rm. Cx5/KW8.1.37. Herewith some further oil consumption results in connection with our Bentley Trials Cars, B-2-GA and B-3-GA. Encs. RC1/L/7.1.37 RC3/L/7.1.37 Cx. Lub

scan0133 Log of car oil consumption and mileage for November and December.
View original record CX. B 3 GA - Oil Consumption. RECEIVED 8 JAN 1937 NOVEMBER. The sump of the above car was full at the speedo reading of 23563. 23829. 1 qrt. 24215 1 qrt. 24527 1 qrt. 24671 1 qrt. 24933 1 qrt. 25404 1…

scan0134 Record of oil consumption for car 'B 2 GA' during November and December, detailing mileage and oil added.
View original record OX. B 2 GA - Oil Consumption. - - - - - - - - - The sump of the above car was full at the speedo reading of 18836. NOVEMBER. 19038 1 qrt. 19187 3 pts.. 19420 1 qrt. 19533 3 pts. 19898 1 qrt. 20254 1…

scan0135 Request for information on when pistons and cylinders were changed for car 34EX, attached to oil consumption reports for the 25/30 and Phantom III models.
View original record Rides S/W. Rm. Swell. Please note. 1220 Can we find from Mx how far 34EX has ~~since rings~~ pistons & Cylinders were changed Rm. Cx2/KW7.1.37. Herewith further oil consumption reports concerning the…

scan0136 The oil consumption and mileage for vehicle GUL 1.
View original record CX 6 JAN RECEIVED RC4/L/1.1.37. Re: Oil Consumption. GUL 1. - - - - - - - - - - - The sump of the above car was full at the speedo reading of 11345. 11665 1 qrt. 11885 1 qrt. 12112 1 qrt. Miles for…

scan0137 Oil consumption of vehicle 34 EX, including mileage readings and oil quantities added.
View original record CX RECEIVED 6 JAN RC6/L/4.1.37. Re: 34 EX - Oil Consumption. The sump of the above car was full at the speedo reading of 16341. 16506 1 qrt. 16840 1 qrt. 17019 1 qrt. Miles for month - 678 to 3 quarts…

scan0138 Record of oil consumption for car 3-AZ-22, detailing mileage readings and the quantity of oil added.
View original record Re: 3-AZ-22 - Oil Consumption RECEIVED The sump of the above car was full at the speedo reading of 9197. 9822 1 qrt. 10238 2 qrts. 10519 1 pt. Miles for month - 1322 to 3 qrts 1 pt of oil - 1510.8…

scan0139 Oil consumption differences between oil types ('Mobil-arctic', 'Castrol XL') and the impact of mild weather.
View original record C220 W/S. Cx. from Rm. Rm7/R.11.1.37. Thank you for Cx5/KW8.1.37. The information is interesting, but we should be glad if you would add the type of oil the cars are using. There may be as much as 25%…

scan0140 Oil consumption figures for the Bentley Trials Car B-4-GA.
View original record S/W. Rm. 1220 SwL Mths Cx2/KW12.1.37. Herewith some further oil consumption figures regarding another Bentley Trials Car B-4-GA. Att: RC3/L/8.1.37 Cx. Lul

scan0141 The oil consumption for car B 4 GA for November and December.
View original record Cx RC3/L/8.1.37. RECEIVED JAN 11 1937 Re: B 4 GA - Oil.Consumption. - - - - - - - - - NOVEMBER. The sump of the above car was full at the speedo reading of 21643. 22188 2 qts. 23061 1 qrt. 23540 2…

scan0142 List of different oils used in each of the trials cars.
View original record CX. TRIALS CARS - RR & B. I give below a list of the different oils used in each car:- B 2 GA .... Prices Motorine "C". B 3 GA .... Wakefields Castrol "XL". B 4 GA .... Prices Motorine "C". GUL 1 ....…

scan0143 Referencing a list of oil types used in present Rolls-Royce and Bentley Trials Cars.
View original record S/W. Rm. 1220 SWDL PLEASE NOTE SWDL Wtles Oil Consumption Rm. Cx5/KW14.1.37. Reference Rm7/Rll.1.37, here is a list of present Trials Cars both Rolls-Royce and Bentley showing what oil is being used…

scan0144 Oil consumption and the importance of achieving round and parallel cylinder bores.
View original record 1220. Rm/Swdl. from Rm. c. to Rm/Mths. Rm4/R.15.1.37. OIL CONSUMPTION. We had a talk with Taub of Chevrolet yesterday. He probably knows how to make an engine with good oil consumption better than…

scan0145 Engine oil consumption and the importance of precise cylinder bore measurements.
View original record 1220 Rm/Swdl. from Rm. c. to Rm/Mths. Rm4/R.15.1.37. OIL CONSUMPTION. We had a talk with Taub of Chevrolet yesterday. He probably knows how to make an engine with good oil consumption better than…

scan0146 Test procedures for oil consumption and Bentley detonations.
View original record To Rm/FD. from Rm/Swdl. 33-EX. OIL CONSUMPTION Will you please carry out oil consumptions on the above car under the following conditions. Consumption at average speeds of 25 MPH. and 50 MPH., to be…

scan0147 Tests on a Bentley head regarding detonation, plug failures, and oil pressure after fitting a new gear pump.
View original record -2- Rm/Swdl.11/AP.19.1.37. (d) Repeat (a) (b) and (c) on 5.B.IV. which has a standard Bentley head. of In the above tests the heads the carbon should not be cleaned off as the detonation trouble is a…

scan0148 High oil consumption on Bentley cars and proposing an increase in sump capacity or oil level as a solution.
View original record Liles Swell Suggestions? 1220 Rm S/W (Rm.) from H. H9/H5.1.37. Re: Oil consumption on Bentley cars. ------------------------------------ Amongst those owners who criticise the engine oil consumption…

scan0149 Chasing a reply regarding oil consumption on Bentley cars.
View original record BY [signature] S/W RECEIVED JAN 1937 [stamp] Lodes 1220. H/DW.17/MD.19.1.37. Re: Oil consumption on Bentley cars. --------------------------------------- Can you yet let us know how soon you are…

scan0150 Request to fit a baffle to a unit to resolve an issue with oil pressure loss after braking.
View original record To HPS. from Rm/Swdl. f 1220 Rm/Swdl.15/AP.20.1.37. B.23.AE. Will you please fit a baffle in the low half similar to that carried out on B.3.unit. This is in connection with loss of oil pressure after…

scan0151 Request to manufacture baffle plates for a Phantom III engine to prevent oil splashing onto valve springs during oil consumption tests.
View original record To HPS. from Rm/Swdl. 1220 Rm/Swdl.17/AP.25.1.37. PHANTOM III. Will you please make 2 sets (24) baffle plates LeC.4908 to prevent oil splashing on to the valve springs and so down the stems. This is…

scan0152 Chasing a reply regarding oil consumption on Bentley cars.
View original record S/W Rm Sildes 1220 H/DW.16/MD.26.1.37. Re: Oil consumption on Bentley cars. --------------------------- Our H/DW.17/MD.19.1.37. How soon may we expect a reply re oil consumption on Bentleys? H/DW.…

scan0153 Oil consumption rates and sump capacity for 3½ and 4¼ Litre Bentley cars.
View original record 1220 W/S. To H. from Rm/Swdl. Rm/Swdl.11/AP.28.1.37. OIL CONSUMPTION ON BENTLEY CARS. In reply to the memo H.9/HS.5.1.37. with regard to customers who have to replenish the sump with oil once or twice…

scan0154 Experiments to improve Bentley oil consumption rather than increasing sump capacity.
View original record W/S. H. from Rm. Rm14/R.29.1.37. 1220 BENTLEY OIL CONSUMPTION. Nothing at present is being done to increase the capacity of the Bentley sump by the Design Department, because for the past 12 months we…

scan0155 The oil consumption for car B 4 GA, detailing mileage and oil added.
View original record CX 1220 B 4 GA - Oil Consumption. RECEIVED 12 FEB 1937 RC7/L/1.2.37. The sump of the above car was full at the speedo reading of 26046. 26187 1 pt. 26384 1 pt. 26723 1 qrt. 27006 1 pt. 27561 1 qrt.…

scan0156 Oil consumption report for car GUL 82, detailing top-ups and mileage efficiency.
View original record CX 1220 RC9/L/1.2.37 RECEIVED 2 FEB 1937 GUL 82 - Oil Consumption. ------------------- The sump of the above car was full at the speedo reading of 19003. 19631 1 qrt. 19834 1 pt. 20212 2 qrts. 20665 2…

scan0157 Oil consumption report for car GUL 1, detailing mileage and oil added.
View original record GUL 1 - Oil Consumption. [Stamp: CX RECEIVED 12 FEB 1937] [Handwritten: 1220] The sump of the above car was full at the speedo reading of 12112. 12392 1 qrt. 12918 1 qrt. 13216 1 qrt. 13704 2 qrts.…

scan0158 Record of a car's oil consumption over a month, including mileage and top-up details.
View original record CX 1220 [STAMP: 2 FEB 1937 RECEIVED] RC6/L/1.2.37. B 3 GA - Oil Consumption. The sump of the above car was full at the speedo reading of 28134. 28566 . 1 qrt. 28626 1 qrt. 28942 1 qrt. 29363 1 qrt. -…

scan0159 The oil consumption for car B 2 GA, including mileage readings and oil added.
View original record Cx 1220 2 FEB 1937 RC5/L/1.2.37. -RECEIVED- B 2 GA - Oil Consumption. The sump of the above car was full at the speedo reading of 21548. 21604 1 qrt. 22129 1 qrt. 22207 1 qrt. - oil changed and 1 qrt…

scan0160 Latest oil consumption results for three Bentley trials cars.
View original record S/W. Rm. 1220 Oil Consumption Bentley. Cx11/KW2.2.37. I attach the latest results with our three Trials Cars up to the end of January. B-4-GA seems to be exceptionally good when compared with the…

scan0161 Oil consumption results for the 25/30 HP trials cars GUL-1 and GUL-82.
View original record S/W. Rm. 1220 Oil Consumption - 25/30 h.p. Cx8/KW2.2.37. I attach the latest results with the two Trials Cars,GUL-1 and GUL-82, up to the end of January. Encs. RC8/L/1.2.37 RC9/L/1.2.37 Cx. dwe L.…

scan0162 Cover memo for oil consumption trial results for two Phantom III cars up to the end of January.
View original record E. Dodd. L. SwDL. RH noted 12NO S/W. Rm. Oil Consumption - Phantom III. Cx4/KW3.2.37. I attach results for the two Trials Cars, 3-AZ-22 and 3-AZ-38, up to the end of January. Encs. RC1/L2.2.37…

scan0163 Record of oil consumption for vehicle 3-AZ-38, detailing mileage, oil top-ups, and calculated m.p.g.
View original record CX RC2/L/2.2.37. 3-AZ-38 - Oil Consumption. - - - - - - - - - The sump of the above carwas full at the speedo reading of 12057. 12133 1 qrt. 12664 2 qrts. 12916 2 qrts. 13037 1 qrt. 13130 1 qrt. 13312…

scan0164 Record of oil consumption for car 3-AZ-22, detailing mileage and oil top-ups.
View original record CX RC1/L/2.2.37. 3-AZ-22 - - Oil Consumption. The sump of the above car was full at the speedo reading of 10519. 10937 1 qrt. 11035 1 qrt. 11353 1 qrt. 11787 1 qrt. 12092 1 qrt. Miles for month - 1573…

scan0165 Final oil consumption return for January for 34-EX.
View original record Swell. F. Dodd. RHD noted 1220 S/W. Rm. Oil Consumption - P.III. Cx7/KW4.2.37. Herewith final oil consumption return for January for 34-EX. Enc. RC18/L/3.a.37 Cx. null

scan0166 The oil consumption for car 34 EX.
View original record CX. RC18/L/3.2.37 Re: 34 EX - Oil Consumption. - - - - - - - - The speedometer of the above car was changed during the month of January. The sump of this car was full at the speedo reading of 17019.…

scan0167 Top over-oiling and poor oil consumption on the Phantom model, proposing experimental modifications.
View original record 1220 HPS. from Rm/Swdl. Rm/Swdl.2/R.20.2.37. OIL CONSUMPTION - P.III. Top over-oiling and poor oil consumption is becoming the most serious complaint on Phantom. We rely almost entirely upon the…

scan0168 Test report on Phantom III oil consumption comparing results with and without outside oil drains.
View original record 1220 To Rm/Gry. 23.2.37. Phantom III Oil Consumption. A. To obtain a value for the outside oil drain pipes we have run two tests without valve grummets, but with the new long valve guides fitted. 1st…

scan0169 Record of oil consumption for car GUL 82, detailing oil added at various mileages.
View original record ck. RC6/L/2.3.37. Re: GUL 82. Oil Consumption. -------- The sump of the above car was full at the speedo reading of 20665. 20944 1 qrt. 20961 1 pt. 21414 1 pt. 21622 1 qrt. 21776 1 qrt. miles for…

scan0170 The oil consumption for car GUL 1.
View original record cx. RC5/L/2.3.37. GUL 1 - Oil Consumption. _ _ _ _ _ _ _ _ _ _ The sump of the above car was full at the speedo reading of 13704. 13996 1 qrt. 14655 2 qrts. Miles for month - 951 to 3 qrts. of oil -…

scan0171 Record of oil consumption for a car, detailing mileage readings and quantities of oil added.
View original record CX. RC8/L/2.3.37. B 2 GA - Oil Consumption. The sump of the above car was full at the speedo reading of 22475. 22740 1 qrt. 22868 1 pt. Miles for month - 383 to 3 pints of oil - 1016 m.p.g. RC.✓

scan0172 Cover note for trial results on oil consumption for the 25/30 HP cars GUL-1 and GUL-82.
View original record Scott MTHS 1220 S/W. Rm. Oil Consumption - 25/30 h.p. Cx3/KW3.3.37. I attach the latest results with our Trials Cars GUL-1 and GUL-82 up to the end of February. Att: RC5/L2.3.37 RC6/L2.3.37 Cx.

scan0173 The oil consumption for car B 3 GA, detailing quantities added at specific mileage readings and the resulting miles per gallon calculation.
View original record CK. [handwritten] RC4/L/2.3.37. B 3 GA - Oil Consumption. - - - - - - - The sump of the above car was full at the speedo reading of 29660. 30071 1 qrt. 30458 1 qrt. 30576 1 qrt. 30779 1 qrt. 31117 3…

scan0174 Cover note regarding oil consumption results for Bentley trials cars B-2-GA and B-3-GA.
View original record 12-20 Roote MTHS S/W. Rm. Oil Consumption - Bentley. Cx2/KW3.3.37. I attach the latest results with our Trials Cars B-2-GA and B-3-GA up to the end of February. Att: RC3/L2.3.37 RC4/L/2.3.37 Cx.

scan0175 Oil consumption report for chassis GAN 54.
View original record CK. RC2/L/5.3.37. GAN 54 - Oil Consumption. - - - - - - - - - The sump of the above car was full at the speedo reading of 619. 1165 1 qrt. 1848 1 qrt. Miles for month - 1229 to ½ gallon of oil - 2458…

scan0176 Record of oil consumption for car 3-AZ-22, listing additions at various mileages.
View original record CX. RC3/L/5.3.37. 3-AZ-22 - Oil Consumption. - - - - - - - - - - - The sump of the above car was full at the speedo reading of 12092. 12349 1 qrt. 12693 1 qrt. 12926 3 pts. 13371 1 qrt. 13812 1 qrt.…

scan0177 Record of oil consumption for car B 4 GA, detailing mileage readings when oil was added.
View original record CX. RC4/L/5.3.37. B 4 GA - Oil Consumption. The sump of the above car was full at the speedo reading of 27561. 27911 1 qrt. 28045 1 qrt. 28219 1 qrt. 28843 1 qrt. 29173 1 qrt. Miles for month - 1612…

scan0178 Cover note regarding oil consumption results for a Phantom III trials car up to the end of February.
View original record 1220 [Signature] MTHS S/W. Rm. Oil Consumption - Phantom III. Cx1/KWI0.3.37. I attach result for our Trials Car 3-AZ-22 up to the end of February. Enc. RC3/L5.3.37 Cx.

scan0179 Oil consumption results for the Bentley Trials Car B-4-GA.
View original record 1220 Farge MTHS S/W. Rm. Oil Consumption - Bentley. Cx3/KWIO.3.3.37. I attach result for our Trials Car B-4-GA up to end of February. Enc. RC4/L5.3.37 Cx.

scan0180 Attaching the oil consumption results for the 25/30 HP Trials Car GAN-54.
View original record S/W. Rm. 1220 [unintelligible signature] MT145 Oil Consumption - 25/30 h.p. Cx2/KWI6.3.37. I attach result for our Trials Car GAN-54 up to end of February. Enc. RC2/L/5.3.37. Cx.

scan0181 Comparative report on the oil consumption of Mobiloil Arctic and Castrol CW in a Bentley B.56 BN.
View original record 1220. To Rm/Gry. Bentley B.56 BN-Oil Consumption. 15.3.37. Comparative oil consumption figures with Mobiloil Arctic and the new Castrol CW. 1st Test CASTROL CW. Miles run........ 200. Average…

scan0182 Laboratory report comparing the properties of various oils, including Shell, Mobiloil, Spirax, and Amber 'B'.
View original record 1220 Rm/FD. HL2/WR.16.3.37. Report No. L4251. Laboratory. Re: Samples of Oil and Grease for comparison with our standardised materials. We have completed our examination of the oils, and our findings…

scan0183 Laboratory report comparing the characteristics of five different grease samples.
View original record To Rm/FD. HL.5/AG.9.4.37. Laboratory. Report No.L.4279. Re: Samples of Grease submitted for comparison and comments. We give below the characteristics of the various greases submitted. Mobilgrease…

scan0184 Viscosity curve graph for Shell shock absorber oil.
View original record LABORATORY 314 / 7.37 VISCOSITY CURVE: SHELL SHOCK ABSORBER OIL TEMPERATURE IN °C TIME OF EFFLUX IN SECONDS FROM REDWOOD NO.I VISCOMETER

scan0185 Viscosity curve for Mobiloil Arctic, plotting temperature against time of efflux from a viscometer.
View original record VISCOSITY CURVE: MOBILOIL ARCTIC LABORATORY 20.2.37 TEMPERATURE IN °C TIME OF EFFLUX IN SECONDS FROM REDWOOD NO.1 VISCOMETER

scan0186 Oil pressure drop issues on chassis 3.B.IV and 6.B.IV.
View original record 4113 1230 HOTEL DE FRANCE. CHATEAUROUX, Indre. France. Rm/GWH/IMW/4/JAB. 17th March 1937. To. Rm/Gry. c.c. Rm/GWH. 3. B. IV. Further to our reply to your telegram re. Oil pressure drop, we confirm…

scan0187 Results of tests on oil pressure drop during braking.
View original record 113-1220 HOTEL DE FRANCE, CHATEAUROUX. Indre. France. Rm/GWH/IMW/2/JAB.23rd March 1937 To. Rm. c. Rm/GWH. 6. B. IV. Oil Pressure Drop on Braking. In response to your Rm/Swdl.8/AP.13.3.37, we have…

scan0188 Investigation into a complaint of high oil consumption on a Bentley B.97.GP.
View original record Piles 1220 HS. from Rm/GWH. c. Hd. c. Mx. c. Rm. Kingsbury. March 24th, 1937. Bentley B.97.GP. Mr. Finch. Engine No. J6BY. Complaint for Oil Consumption. The engine of this car will not do more than…

scan0189 The oil consumption of car B 2 GA, detailing mileage and oil added.
View original record CX. RC7/L/2.4.37. POST... APR 1937 B 2 GA - Oil Consumption. - - - - - - - - - - - The sump of the above car was full at the speedo reading of 22868. 23017 1 pt. Car sent to W. Derby 16.3.37. 23292 3…

scan0190 The oil consumption for car B3 GA, noting mileage and quantities added.
View original record CX. RC8/L/2.4.37. POST. Received 4 APR 1937 B 3 GA - Oil Consumption. The sump of the above car was full at the speedo reading of 31117. 31532 1 qrt. 31671 1 qrt. Car now out of commission as a trials…

scan0191 Record of oil consumption for car B 4 GA, detailing oil added at various mileage points and the calculated m.p.g.
View original record CX. B 4 GA - Oil Consumption. - - - - - - - - - The sump of the above car was full at the speedo reading of 29173. 29701 2 qrts. 29978 1 qrt. 30852 1 qrt. 31128 1½ pts. Miles for month - 1955 to 1…

scan0192 Oil consumption report for car GUL 1, detailing oil added at various mileage readings.
View original record CX. RC11/L/2.4.37. GUL 1 - Oil Consumption. - - - - - - - - - - - The sump of the above car was full at the speedo reading of 14655. 15022 3 qts. 15074 1 pt. 15415 1 qrt. 16032 2 qrts. Miles for month…

scan0193 Oil consumption log detailing additions at specific mileages for car GAN 54.
View original record CX. RC5/L/2.4.37. POST. APR 3 1937 Received GAN 54 - Oil Consumption. - - - - - - - - - - - - The sump of the above car was full at the speedo reading of 1848. 2283 1 qrt. 2885 1 pt. 3328 1/2 pt.…

scan0194 The oil consumption for car GWN 8, including mileage and oil added.
View original record CX. RC6/L/2.4.37. POST. RECEIVED 3 APR 1937 GWN 8 - Oil Consumption. The sump of the above car was full at the speedo reading of 168. 641 . 2 qrts. Miles for month - 473 to 2 quarts of oil - 946…

scan0195 Log of oil consumption for car 3-AZ-38, showing mileage, top-ups, and calculated MPG.
View original record CX. RC4/L/2.4.37. 3-AZ-38 - Oil Consumption. - - - - - - - - - - The sump of the above car was full at the speedo reading of 15337. 15659 1 qrt. 15761 1 qrt. 15890 2 qrts. 16334 1 qrt. 16842 1 qrt.…

scan0196 Vehicle oil consumption, listing mileage readings against quantities of oil added.
View original record CX. WHS 51220 Goodall RC3/L/2.4.37. POST. Received 3 APR 1937 3-AZ-22 - Oil Consumption. - - - - - - - - - - - The sump of the above car was full at the speedo reading of 13812. . 14311 1 qrt. 14724 3…

scan0197 Requesting a test to determine the maximum permissible leak in a release valve to improve oil pressure recovery time.
View original record 1220 Rm/Swdl. from Rm/Gry. Rm/Gry5/R.9.4.37. He. mentioned at the Conference the other day that the Aero people had overcome the time taken for re-covery of oil pressure by having a leak in the…

scan0198 Short memo detailing oil consumption for car B 39 JY.
View original record CX. RC4/L/4.5.37. Re: B 39 JY - Oil Consumption. The sump of the above car was full at the speedo reading of 1044. 1542 1 qrt. Miles for month - 498 to 1 qrt of oil - 1992 m.p.g. RC. [STAMP] POST. MAY…

scan0199 The oil consumption for car B 119 JY, tracking mileage and oil added.
View original record CX. RC5/L/4.5.37. Re: B 119 JY - Oil Consumption. ------------------------ The sump of the above car was full at the speedo reading of 603. 745 1 pt. Miles for month - 142 to 1 pint of oil - 1136…

scan0200 Oil consumption for car 3-AZ-22.
View original record CX. RC3/L/4.5.37. Re: 3-AZ-22 - Oil Consumption. ----------------------- The sump of the above car was full at the speedo reading of 15490. 15723 1 pt. 16066 1 pt. Miles for month - 576 to 1 qrt of…

scan0201 The oil consumption for car GAN 54, detailing speedometer readings and oil additions.
View original record CX. RC2/L/4.5.37. Re: GAN 54 - Oil Consumption. --o-- The sump of the above car was full at the speedo reading of 3328. 3796 1 pt. 4084 1 pt. 4649 1 qrt. Miles for month - 1321 to 2 qrts of oil - 2642…

scan0202 Oil consumption for car GUL 1, including mileage readings and oil top-ups.
View original record CX. RC1/L/4.5.37. Re: GUL 1 - Oil Consumption. _ _ _ _ _ _ _ _ _ _ The sump of the above car was full at the speedo reading of 16032. 16317 1 qrt. 16840 1 pt. 16961 1 qrt. 17258 1 pt. 17763 1 qrt.…

scan0203 Excessive oil consumption on the 4 1/4 Litre Bentley, with suggestions for piston rings.
View original record W/P - Sr/VA. 1220 Rm/Mths.19/JH.4.5.37. EXCESSIVE OIL CONSUMPTION ON 4 1/4 Litre Bentley. see 1245 With reference to your memo. Sr/VA.1/ET.29.4.30. in which you state that you are getting complaints…

scan0204 Attachment of oil consumption figures for two Trials Cars for the month of April.
View original record MTHS. Small 1220 S/W. Rm. Oil Consumption. Cx6/KW5.5.37. I attach the oil consumption figures for the month of April for our Trials Cars B-39-JY and B-119-JY. Encs. RC4/L4.5.37 RC5/L4.5.37 Cx. Rwb

scan0205 Oil consumption returns for London Trials Cars for the month of April.
View original record S/W. Rm. MTHS 1220 Oil Consumption. Cx5/KW5.5.37. Herewith returns for April showing the oil consumption records of our London Trials Cars, 3-AZ-22, GUL-1 and GAN-54 The figures for 3-AZ-38 will…

scan0206 The oil consumption for car GWN 8, detailing mileage and oil usage.
View original record S/W Rm MTHS Siddall ex. CX 1220 [STAMP: RECEIVED] [STAMP: 6 MAY] Ro1/L/5.5.37. Re: GWN 8 - Oil Consumption. The sump of the above car was full at the speedo reading of 641. 940 1 qrt. Miles for month…

scan0207 Log of oil consumption for car 3-AZ-38, detailing mileage readings against oil added and a monthly summary.
View original record S/W 1220 Shorth MTHS Rin Why so bad Re: 3-AZ-38 - Oil Consumption. RC3/L/7.5.37. The sump of the above car was full at the speedo reading 18245. 18296 1 qrt. 18890 2 qrts. 19259 2 qrts. 19724 2 qrts.…

scan0208 Oil consumption report for car B 60 JD, tracking mileage and oil additions.
View original record S/W Rm oz. Lwt MTHS 1220 RC2/L/7.5.37. Re: B 60 JD - Oil Consumption. The sump of the above car was full at the speedo reading of 1161. 1290 1 qrt. 1503 1 qrt. 1922 1 qrt. 2296 1 qrt. 2707 1 qrt.…

scan0209 Special oil consumption tests for production chassis.
View original record PIII 1230 10.5.37 3-BT-109 PRODUCTION CHASSIS - SPECIAL OIL CONSUMPTION TESTS 490 m.p.g. .0027 Valve clearance. No grummits. No drains. 558 m.p.g. With drains - 14% improvement 725 m.p.g. Drains and…

scan0210 Report on oil consumption and component testing on the 32-EX car, specifically the over-drive gearbox and front suspension.
View original record Hs. from Rm. c. E. c. Ey. c. Mx. 1220 Rm6/R.11.5.37. P.III TOP OVER-OILING. Attached is a report from Dodd on oil consumption which more or less confirms the figures given by Mx at the last Car…

scan0211 Tests conducted to improve Phantom III oil consumption.
View original record To Rm. Phantom III oil Consumptions. We have carried out numerous tests to obtain a value for grummets, raised valve gear, and oil drains to the cylinder heads, with the object of improving Phantom…

scan0212 Attaching oil consumption figures for Trials Cars 3-AZ-22, GWN-2 and GAN-54 for the month of May.
View original record Mths. 1220 S/W. Rm. Cx11/KW4.6.37. I attach hereto the oil consumption figures for our Trials Cars 3-AZ-22, GWN-2 and GAN-54 for the month of May. Encs. RC3/L2.6.37. RC4/L3.6.37 RC5/L2.6.37 Cx. fmb

scan0213 Oil consumption for car GAN 54.
View original record CX. RC5/I/2.6.37 Re: GAN 54 - Oil Consumption. The sump of the above car was full at the speedo reading of 4649. 5503 1 qrt. 5947 1 qrt. Miles for month - 1298 to 2 quarts of oil - 2596 m.p.g. RC.✓…

scan0214 Oil consumption and mileage for chassis No. 3-AZ-22.
View original record CX. RC4/L/3.6.37. [STAMP] CX JUN 4 RECEIVED Re: Chassis No. 3-AZ-22. - - - - - - - The sump of the above car was full at the speedo reading of 16066. 16558 1 pt. 16999 1 qrt. 17321 1 qrt. 17907 3 pts.…

scan0215 The oil consumption for vehicle GWN 2, including mileage readings and oil added.
View original record CX. Re: GWN 2 - Oil Consumption. The sump of the above car was full at the speedo reading of 178. 1407 1 qrt. 1760 1 pt. 2157 1 qrt. Miles for month - 1979 to 2 quarts, 1 pint - 3168 m.p.g. CX…

scan0216 Note sending oil consumption figures for two Trials Cars for the month of May.
View original record S/W. Rm. [Handwritten:] Matthews [Handwritten:] Note & return [Handwritten:] Wates [Handwritten:] 1220 Cx7/KW3.6.37. I send you herewith oil consumption figures for our two Trials Cars B-39-JY and…

scan0217 Record of oil consumption for car B 39 JY, detailing mileage and oil added.
View original record C.H. RC8/L/2.6.37. Cx 3 JUN 1937 RECEIVED Re: B 39 JY - Oil Consumption. The sump of the above car was full at the speedo reading of 1542. 1753 1 qrt. 1910 1 pt. 2304 3 pts. 2623 1 pt. Miles for month…

scan0218 The oil consumption for car B 60JD, detailing oil additions at various mileage points.
View original record CX. RC10/L/2.6.37. Re: B 60JD - Oil Consumption. The sump of the above car was full at the speedo reading of 2707. 2935 1 qrt. 3447 2 qrts. 4033 1 qrt. 4248 1 qrt. 4561 1 pt. 4727 1 qrt. 5069 1 qrt.…

scan0219 Sending oil consumption figures for Trials Cars GWN-8 and 3-AZ-38 for the month of May.
View original record Matthews 1220 Note & return Rm [Signature] S/W. Rm. Cx8/KW3.6.37. I send you herewith oil consumption figures for our Trials Cars GWN-8 and 3-AZ-38 for the month of May. The balance will follow in due…

scan0220 The oil consumption figures for vehicle GWN 8.
View original record CX. RC4/L/2.6.37. [Stamp Text: CX RECEIVED 3 JUN 1937] Re: GWN 8 - Oil Consumption. The sump of the above car was full at the speedo reading of 940. 1291 1 qrt. 1656 1 qrt. Miles for month - 716 to 2…

scan0221 Log of oil consumption for car 3-AZ-38, detailing mileage readings and the amount of oil added.
View original record X. Re: 3-AZ-38 - Oil Consumption. - - - - - - - - - - - - RC7/L/2.6.37 CX JUN 3 1937 RECEIVED The sump of the above car was full at the speedo reading of 21392. 21448 1 qrt. 21711 2 qrts. 21845 1 qrt.…

scan0222 Cover note regarding oil consumption figures for Trials Car B-119-JY for the month of May.
View original record MTHS 1220 S/W. Rm. Cxl2/KW4.6.37. I attach hereto oil consumption figures in respect of Trials Car B-119-JY for the month of May. Enc. RC5/L3.6.37 Cx. Kwb

scan0223 Oil consumption report for car B 119 JY, detailing mileage and oil top-ups.
View original record CX. RC5/L/3.6.37. Re: B 119 JY - Oil Consumption. The sump of the above car was full at the speedo reading of 745. 1045 1 pt. 1976 1 qrt. 2083 1 pt. 2389 1 pt. 2580 1 qrt. 3126 1 qrt. Miles for month…

scan0224 Oil consumption test results for a production chassis B-5-KW run by tester Brazier.
View original record To Rm. c. to Mx. 1220 Rm/FD.10/JH.22.6.37. Production Chassis B-5-KW. Oil Consumption. Herewith oil consumption figures of a production chassis run by our tester Brazier. Miles run 150 Time 2 hrs. 52…

scan0225 The oil consumption for vehicle GWN 8.
View original record 1220 RC5/L/1.7.37. Re: GWN 8 - Oil Consumption. The sump of the above car was full at the speedo reading of 1656. 2366 1 qrt. 2464 1 qrt. Miles for month - 808 to 2 quarts of oil - 1616 mpg. RC. ✓…

scan0226 Record of oil consumption for car 3-AZ-22, listing mileage readings and oil top-ups.
View original record CX. 1220 RC6/L/1.7.37. Re: 3-AZ-22 - Oil Consumption. - - - - - - - - - - - - - - - The sump of the above car was full at the speedo reading of 17907. 18601 1 qrt. 19131 1 qrt. 19789 1 qrt. 20276 1…

scan0227 Log of oil consumption for car B 119 JY, detailing mileage and oil top-ups.
View original record MATTHEWS 1220. CR RC7/L/1.7.37. Re: B 119 JY - Oil Consumption. ------------------------- The sump of the above car was full at the speedo reading of 3126. 3381 1 pt. 3616 1½ pts. 3990 1 qrt. 4619 1…

scan0228 Record of oil consumption for car B 60 JD, including mileage and oil added.
View original record 1220. Matthews. Not very good ? Rm RC8/L/1.7.37. Re: B 60 JD - Oil Consumption. - - - - - - - - - - - The sump of the above car was full at the speedo reading of 5279. 5557 1 qrt. 6016 1 pt. 6146 1…

scan0229 Oil consumption for car GWN 2.
View original record O.K. 1220 RC2/L/2.7.37. Re: GWN 2 - Oil Consumption. The sump of the above car was full at the speedo reading of 2157. 2703 1 qrt. 3567 1 pt. Miles for month - 1470 to 3 pints of oil - 3760 m.p.g.…

scan0230 The oil consumption for car GAN 54.
View original record CX. 1220 RC3/L/2.7.37. Re: GAN 54 - Oil Consumption. ------------------------ The sump of the above car was full at the speedo reading of 5947. 6585 1 pt. 6814 1 pt. 7094 1 pt. Miles for month - 1147…

scan0231 Record of oil consumption for car 3-AZ-38, listing mileage readings and quantities of oil added.
View original record CX. 1220 RC4/L/2.7.37. Re: 3-AZ-38 - Oil Consumption. ----------------------- The sump of the above car was full at the speedo reading of 23881. 24189 2 qts. 24380 1 qrt. 24684 2 qts. 24746 2 qets.…

scan0232 Cover note attaching oil consumption figures for Trials Cars B-60-JD and B-119-JY for the month of June.
View original record S/W. Rm. Oil Consumption. Cx11/KW2.7.37. I attach hereto oil consumption figures for the month of June for our Trials Cars B-60-JD and B-119-JY Encs. RC7/L.1.7.37 RC8/L.1.7.37 Cx. Lumb 1220

scan0233 Attaching oil consumption figures for Trials Cars 3-AZ-22 and GWN-8 for the month of June.
View original record 1220 S/W. Rm. Oil Consumption. Cx10/KW2.7.37. I am attaching hereto oil consumption figures for our Trials Cars 3-AZ-22 and GWN-8 for the month of June. Encs. RC5/L1.7.37. RC6/L1.7.37. Cx. -Lweb

scan0234 Inconsistent oil consumption results, bearing repairs, and new chassis preparation.
View original record W/P. Sr. from Rm. Rm8/R.5.7.37. Many thanks for your notes. I have no excuses for my delay in replying, except that I have been doing other things most of the time. It does not look as though we shall…

scan0235 Cover note for oil consumption figures for Trials Cars 3-AZ-38, GAN-54, and GWN-2 for the month of June.
View original record S/W. Rm. 1220 Oil Consumption. Cx9/KW5.7.37. I attach hereto oil consumption figures for the month of June in respect of Trials Cars 3-AZ-38 and GAN-54 and GWN-2 Encs. RC3/L2.7.37 RC4/L2.7.37…

scan0236 Oil consumption figures for Trials Car B-39-JY for the month of June.
View original record S/W. Rm. 1220 Oil Consumption. Cx11/KW6.7.37. I attach hereto oil consumption figures for the month of June in respect of Trials Car B-39-JY. Enc. RC1/L.2.7.37 Cx. Lueb

scan0237 Record of oil consumption for car B 39 JY, detailing top-ups at various mileages and calculating the overall m.p.g.
View original record C.X. 1220 RC1/L/2.7.37. Re: B 39 JY - Oil Consumption. - - - - - - - - - - - - 2623. The sump of the above car was full at the speedo reading of 3135 1 pt. 3524 1 qrt. 3870 1 qrt. 4007 1 pt. 4169 1…

scan0238 Variations in oil consumption on Phantom III cars and plans for investigation and improvement.
View original record W/S. Cx. from Rm. 1220 Rm11/R.9.7.37. We note some astonishing variations in oil consumptions on the P.III's. As an example:- 3.AZ.38 is doing 599 miles to the gallon, and 3.AZ.22 " " 2369 " " " We…

scan0239 Heavy oil consumption, plans to test new pistons in France, and the continental testing of the first Wraith model.
View original record Rm/GWH. 1220 Rm12/R.10.7.37. HEAVY OIL CONSUMPTIONS. From your observations, there seems to be something extraordinary about French conditions. The disconcerting feature is that Sr's car, which is…

scan0240 Oil consumption and clutch performance of two demonstration cars, 3-AZ-38 and 3-AZ-22.
View original record S/W. Rm. H.R.C file 1220 ? Cxl/KW15.7.37. Reference Rml1/R9.7.37, it is not convenient to let you have these cars at the present time, but we are hoping shortly to replace both of them and then the…

scan0241 Test report on Bentley B.35.KU oil consumption at high speeds on the Brooklands track.
View original record 1220 Hs. from Rm/GWH. Rm. Mx. W/P - Sr. Rm/GWH2/R.16.7.37. BENTLEY OIL CONSUMPTION. B.35.KU. We have been carrying out tests on the Brooklands' track with B.35.KU (Paris New Trials car) to ascertain…

scan0242 Record of oil consumption for car GAN 54, detailing mileage and oil top-ups.
View original record Handwritten: Hales 1220 MTHS Please note & return Rm Typed: CX. RC5/L/5.8.37. GAN 54 - Oil Consumption. - -V- - - - - - - - - - - The sump of the above car was full at the speedo reading of 7094. 7618…

scan0243 The oil consumption for car B 119 JY.
View original record CX. B 119 JY - Oil Consumption. ------------- The sump of the above car was full at the speedo reading of 4619. 4946 1 qrt. 5595 1 qrt. 5756 1 qrt. 6321 1 qrt. 6561 1 qrt. Miles for month - 1942 to 1…

scan0244 Oil consumption for car 3-AZ-38, tracking mileage and oil top-ups over a month.
View original record CX. 3-AZ-38 - Oil Consumption. - - - - - - - - - - - RC2/L/5.8.37. The sump of the above car was full at the speedo reading of 25829. 26007 1 qrt. 26520 1 qrt. 27162 3 1/2 pts. 27521 2 qrts. 27581 2…

scan0245 Record of oil consumption for vehicle 3-AZ-22, detailing mileage and oil added.
View original record CX. RC3/L/5.8.37. 3-AZ-22 - Oil Consumption. - - - - - - - - - - - - The sump of the above car was full at the speedo reading of 20276. 20995 1 qrt. 21436 1 qrt. 21867 1 qrt. Miles for month - 1591 to…

scan0246 Record of oil consumption for car GWN 2, detailing mileage, oil top-ups, and calculated miles per gallon.
View original record CX. RC4/L/5.8.37. GWN 2 - Oil Consumption. - - - - - - - - - - - The sump of the above car was full at the speedo reading of 3567. 3962 1 qrt. 4572 1 qrt. 5245 1 pt. 5811 1 qrt. 6137 1 qrt. Miles for…

scan0247 The oil consumption for car B 39 JY over a month.
View original record 1220 . MTHS CH RC1/L/10.8.37. Re: B 39 JY - Oil Consumption. - - - - - - - - - - - - The sump of the above car was full at the speedo reading of 4392. 4643 1 qrt. 5112 1 qrt. 5336 1 qrt. 5437 1 pt.…

scan0248 Visit to the I.A.E. Research Department to discuss cylinder bore wear and oil consumption.
View original record To By. from Rm/Mths. c. to Da. c. to Mx. [Handwritten]: J 1220 also 1124 Rm/Mths.5/AP.17.8.37 REPORT ON VISIT TO I.A.E. RESEARCH DEPT. 12.8.37 This visit was paid to the I.A.E. Research Dept. in order…

scan0249 Engine component materials, hardness, machine limits, and finish.
View original record -2- Rm/Mths.5/AP.17.8.37 moment for reducing wear were Austenitic liners, nitrided liners, and Chromium plating of bores. He mentioned that besides Rovers, Standard were now laying down plant for…

scan0250 Report discussing tests on ring flutter, bearing temperatures, and gear measurement instruments.
View original record -3- Rm/Mths.5/AP.17.8.37 (9) Ring Flutter. They were carrying out tests on ring flutter and were inclined to believe that the vibration was of radial character and not an up and down vibration in the…

scan0251 Record of oil consumption for car 3-AZ-38, showing mileage and oil added.
View original record S/W, Rm 1220. M TITS RC5/L/6.9.37 CX RECEIVED Re: 3-AZ-38 - Oil Consumption. - - - - - - - - - - - - - - The sump of the above car was full at the speedo reading of 28446. 29089 3½ pts. 29381 1 qrt.…

scan0252 Record of oil consumption for car B 39 JY, detailing mileage and oil added.
View original record 1220. S/W Rm. MTAS Cx RECEIVED 6 SEP 1937 RC2/L/3.9.37. Re: B 39 JY - Oil Consumption. - - - - - - - - - The sump of the above car was full at the speedo reading of 6504. 6845 1 pt. 7167 1 qrt. 7813 3…

scan0253 Oil consumption report for car B 119 JY, detailing mileage and oil added over a month.
View original record S/w Rw 1220. M T H S Re: B 119 JY - Oil Consumption. - - - - - - - - - - The sump of the above car was full at the speedo reading of 6561. 6634 1 qrt. 7495 1 qrt. 7977 1 1/2 pts. 8232 1 pt. Miles for…

scan0254 Oil consumption for car GAN 54, detailing mileage and oil added.
View original record S/W Rm 1220. MTHS RC5/L/3.9.37. CX SEP 1937 RECEIVED Re: GAN 54 - Oil Consumption. ------------------------ The sump of the above car was full at the speedo reading of 7902. 9022 1 qrt. 9317 1 pt.…

scan0255 Oil consumption for car GWN 2, including mileage, oil added, and miles per gallon calculation.
View original record S/W Rm MTtS 1220. CX RECEIVED SEP 6 1937 RC4/L/3.9.37 Re: GWN 2 - Oil, Consumption. The sump of the above car was full at the speedo reading of 28446. 6392 1 pt. 6971 1 qrt. 7438 1 pt. POST... 1937…

scan0256 Bentley cylinder bore wear and oil consumption, detailing specific engine features and test results.
View original record BENTLEY CYLINDER BORE WEAR AND OIL CONSUMPTION B.23.AD. The special features on this car are as follows:- (1) Low Brinell cylinder block produced without chills in the bore, but otherwise to normal…

scan0257 Venturi crankcase breather tests and cylinder wear analysis.
View original record -2- Venturi crankcase breather. The venturi breather tests show that the depression in pipe leading from the crankcase to be as follows under calm conditions - 30 m.p.h. - 0.3 inches of water. 70 " -…

scan0258 Oil consumption data for car reference 3 CP 30.
View original record CX. RC8/L/4.10.37. Re: 3 CP 30 - Oil Consumption. - - - - - - - - - - - The sump of the above car was full at the speedo reading of 284. 899 1 qrt. 1086 1 qrt. 1602 1 qrt. 2203 1 qrt. 2318 1 qrt. 2827…

scan0259 Oil consumption for car 3-AZ-38, detailing oil top-ups at various mileage points.
View original record CX. RC7/L/4.10.37. Re: 3-AZ-38 - Oil Consumption. - - - - - - - - - - - The sump of the above car was full at the Speedo reading of 30290. 30770 1 qrt. 30847 1 qrt. 31010 1 qrt. 31134 1 qrt. 31416 1…

scan0260 Oil consumption for car GAN 54.
View original record CX. RG6/L/4.10.37. Re: GAN 54 - Oil Consumption. - - - - - - - - - - - The sump of the above car was full at the speedo reading of 10231. 10640 1 qrt. 11343 1 pt. Miles for month - 1112 to 3 pints of…

scan0261 Attaching oil consumption figures for Bentley Trials Cars B-119-JY and B-39-JY for the month of September.
View original record Mths. 1220 Ask Hdy oil was added to B119 JY Pm S/W. Rm. Oil Consumption. Cx8/KW5.10.37. I attach hereto figures for the month of September in respect of Bentley Trials Cars Nos. B-119-JY and B-39-JY.…

scan0262 Record of oil consumption for car B 119 JY, detailing mileage and oil additions.
View original record CX. RC5/L/4.10.37. POST. RECEIVED OCT 1937 Re: B 119 JY - Oil Consumption. The sump of the above car was full at the speedo reading of 8232. 8621 1 qrt. 9352 1 pt. 9446 1 qrt. 9452 1 pt. 10330 1 pt.…

scan0263 The oil consumption for chassis B 39 JY, detailing mileage and oil added.
View original record CX. RC4/L/4.10.37. Re: B 39 JY - Oil Consumption. -------------- The sump of the above car was full at the speedo reading of 8119. 8310 1 qrt. 8830 1 qrt. 9171 1 qrt. 9674 1 qrt. Miles for month -…

scan0264 Attaching oil consumption figures for September in respect of three specific trials cars.
View original record MTNS files 1220 S/W. Rm. Cx7/KW5.10.37. Oil Consumption. I attach hereto figures for the month of September in respect of Trials Cars 3-AZ-38, 3-CP-30 and GAN-54. Encs. RC6/L4.10.37 RC7 " RC8 " Cx.…

scan0265 Note detailing oil consumption for car GWN 2, including mileage readings and oil top-up amounts.
View original record CX. RC2/L/5.10.37. Re: GWN 2 - Oil Consumption. The sump of the above car was full at the speedo reading of 7438. 7830 1 pt. 8493 1 qrt. Miles for month - 1055 to 3 pints of oil - 2808 m.p.g RC.…

scan0266 Cover note for attached oil consumption figures for Trials Car No. GWN-2 for the month of September.
View original record Files Mths - 1220 S/W. Rm. Oil Consumption, Cx20/KW11.10.37. I attach hereto figures for the month of September in respect of Trials Car No.GWN-2. Att: RC2/L5.10.37 Cx.

scan0267 Series of questions regarding a report on oil consumption and cylinder wear, particularly concerning Bentley engines and piston ring design.
View original record Oil Consumption File. 1220 To Rm/Mths. from Rm. OIL CONSUMPTION AND CYLINDER WEAR REPORT. We have read your report on Oil Consumption with considerable interest. We should like to have an answer to…

scan0268 Proposal for comparative testing of Phosphor Chrome liners against standard cylinder iron in a Wraith engine.
View original record -2- (6) continued It appears to us that the original loose liner Wraith engine is an ideal way of getting comparative results. we ought to get some of the Phosphor Chrome liners made by Leylands…

scan0269 Response to a memo about increased bore wear and oil consumption, discussing Aerolite Pistons and 'L' section rings.
View original record Rm 1220 Oil Consumption File. 12-10-37 We give below the answers to your memo Rm3/AP 11-10-37 referring to Oil consumption & Cylinder Wear report. Ques ① We state as pointed verbally this morning that…

scan0270 Technical note discussing piston ring performance, oil consumption, and blow-by, referencing specific ring arrangements.
View original record 3. twist may give rise to groove wear in which case the damping effect is eventually lost. (b) The line contact of the ring may not be particularly good for bore wear. (d) The original 3 1/2 litre…

scan0271 Memo answering questions about oil consumption, power loss, and tests on various engine components.
View original record 3. the tests carried out by G.W.H on service complaints. Ques ④ Almost dead certain, the figures shown were taken under full throttle conditions & previous runs have shown that grommets make little…

scan0272 Need for further comparative tests on various types of pistons for aero and other engines.
View original record 4 but we are at the moment completing data & on many engines as we can including most of the aero engines and the whole series will be laid out on one chart which should give a fairly good history &…

scan0273 List of required tests and further information regarding engine components like tin plating, piston rings, and skirts.
View original record 5. ④ Tin plating, these tests can be carried out in cold chamber & we can put in hand tests almost immediately ⑤ Pressure form of Ring in order to get better pressure at the tips ⑥ Effect of skirt…

scan0274 Request to order six sets of material for the Wraith Chassis, listing required parts and drawing numbers.
View original record To RHC/CAN. c. Roy/Ms. (Strikethrough) c. RHC. (Strikethrough) c. HPS. (Strikethrough) c. G/Rb. (Strikethrough) c. Rm/Grys. 1200 Re: Wraith Chassis - 6 Sets of Material. Will you please order 6 sets…

scan0275 Oil consumption figures for October for specific Trials Cars.
View original record Matthews 1220 S/W. Rm. Oil Consumption. Cx7/KW4.11.37. I attach hereto the figures for October in respect of the undermentioned Trials Cars :- GAN-54 3-CP30 3-AZ-38 Encs. RC8/L/3.11.37 RC9/L3.11.37…

scan0276 The oil consumption for car GAN 54, including mileage and pints of oil used.
View original record CX. RC8/L/3.11.37. Re: GAN 54 - Oil Consumption. The sump of the above car was full at the speedo reading of 11343. 11803 1 1/2 pints. Miles for month - 460 to 1 1/2 pints of oil - 2448 m.p.g. RC. ✓…

scan0277 Log of oil consumption for car 3 AZ 38, detailing mileage and oil added.
View original record CX. RCLO/L/3.11.37 Re: 3 AZ 38 - Oil Consumption. The sump of the above car was full at the speedo reading of 31416. 31612 1 qrt. 31932 1 qrt. 32182 1 qrt. 32399 2 qrts. 32731 1 qrt. 32937 1 qrt.…

scan0278 Record of oil consumption for car 3 CP 30, detailing oil added at various mileages.
View original record CX. RC9/L/3.11.37. Re: 3 CP 30 - Oil Consumption. - - - - - - - - - - - - The sump of the above car was full at the speedo reading of 3713. 3934 1 qrt. 4318 1 qrt. 4648 1 qrt. 4782 1 qrt. 5038 1 qrt.…

scan0279 The oil consumption for car GWN 2.
View original record s/w Rm O.K. 1220 MNHS File CX RC1/L/5.11.37. RECEIVED 8 NOV 1937 POST. NOV 1937 Re: GWN 2 - Oil Consumption ----------------------- The sump of the above car was full at the speedo reading of 8493.…

scan0280 Oil consumption figures for Trials Car B-119-JY for the month of October.
View original record MTNS 1220 S/W. Rm. Oil Consumption. I attach hereto figures for the month of October in connection with Trials Car B-119-JY. Cx12/KW9.11.37. Enc. RC12/L3.11.37. Cx.

scan0281 The oil consumption for car with registration B 119 JY.
View original record CX. Re: B 119 JY - Oil Consumption. - - - - - - - - - - RC12/L/3.11.37. The sump of the above car was full at the speedo reading of 10876. 10933 1 qrt. 11589 ½ pt. 11907 1 qrt. Miles for month - 1031…

scan0282 Oil pressure readings at various RPMs for Arctic Oil after a fast run from Towcester to Stratford.
View original record 1220. SWDC OK. with this oil Rm. What do you expect. Pm Arctic Oil. Lp9/IH.29.11.37. Re the above - after a fast running from Towcester to Stratford the oil pressures were as follows:- R.P.M. 500 1000…

scan0283 The oil consumption for car B 39 JY during November.
View original record X. RC4/L/2.12.37. Re: B 39 JY - Oil Consumption for November. - - - - - - - - The sump of the above car was full at the speedo reading of 11075. 11540 1 qrt. 11798 1 pt. 12480 1 qrt. 12719 1 pt. 13309…

scan0284 Log of oil consumption for car GAN 54, detailing mileage readings and quantities of oil added.
View original record 1270 x. RC2/L/2.12.37. Re: GAN 54 - Oil Consumption. - - - - - - - - - - 11803. The sump of the above car was full at the speedo reading of 12262 1 pt. 12866 1 qrt. 13072 1 pt. 13589 1 pt. Miles for…

scan0285 The oil consumption for car B 39 JY for the month of October, detailing top-ups and mileage.
View original record Re: B 39 JY - Oil Consumption for October. - - - - - - - - - - - The sump of the above car was full at the speedo reading of 9674. 9930 1 qrt. 10229 1 pt. 10351 1 pt. Car decarbonised during 10552 1…

scan0286 Oil consumption for car B 2LS, including mileage and oil added.
View original record CX. RC4/L/3.12.37. [Stamp: RECEIVED CX DEC 1937] [Stamp: PGS DEC 1937] Re: B 2LS - Oil Consumption. - - - - - - - - - - - - The sump of the above car was full at the speedo readings of 700. 1211 2…

scan0287 The oil consumption of car 3 CP 10, tracking mileage and oil additions.
View original record 1200 Cx Ex. RC5/L/3.12.37. RECEIVED Re: 3 CP 10 - Oil Consumption. - - - - - - - - - The sump of the above car was full at the speedo reading of 1134. 1221 1 qrt. 1627 1 qrt. 1946 1 qrt. 2437 1 qrt.…

scan0288 Note detailing a car's oil consumption and mileage for the month.
View original record POST DEC 6 DEC 1937 1220 C.X. DEC RECEIVED Re: GWN 2 Oil Consumption. RC1/L/4.12.37. The sump of the above car was full at the speedo reading of 9737. 10041 1 qrt. 10693 1 qrt. Miles for month - 956…

scan0289 Oil consumption figures for several trials cars for the month of November.
View original record MTHS 1220 S/W. Rm. Oil Consumption. Cx6/KW7.12.37. I attach hereto figures for the month of November in respect of Trials Cars Nos.GAN-54, GWN-2 and 3-CPIO. Encs. RC1/L4.12.37 RC2/L2.12.37…

scan0290 Attaching figures for oil consumption on Trials Cars B-39-JY and B-2-LS.
View original record MTNS 1220 S/W. Rm. Oil Consumption. Cx7/KW7.12.37. I attach hereto figures for the month of November in respect of Trials Cars Nos.B-39-JY and B-2-LS, and for the month of October in respect of…

scan0291 Record of oil consumption for car B 4 LS, detailing mileage and oil top-ups.
View original record CX. 1220 RC7/L/4.1.38. Re: B 4 LS - Oil Consumption. - - - - - - - - - The sump of the above car was full at the speedo reading of 603. 1093 1 pt. 1567 1 qrt. 1700 1 pt. Miles for month - 1097 to 2…

scan0292 The oil consumption for car 3 CP 10, detailing mileage, oil top-ups, and loan period.
View original record CX. 1220 POST JAN 6 1933 Rec'd RC2/L/4.1.38. Re: 3 CP 10 - Oil Consumption. The sump of the above car was full at the speedo reading of 3907. 4759 Mr. Summers added 5564 1 qrt. 2 qrts. 1 qrt. Car on…

scan0293 Oil consumption for car 3 CP 30 during the month of November.
View original record CX. 1220 November. RC4/L/4.1.38. Re: 3 CP 30 - Oil Consumption. - - - - - - - - The sump of the above car was full at the speedo reading of 5038. 5347 1 qrt. 5800 1 qrt. 5813 1 qrt. 6586 1 qrt. 7109 1…

scan0294 Oil consumption report for car 3 CP 30 for the month of December.
View original record CX. 1220 December. RC1/L/5.1.38. Re: 3 CP 30 - Oil Consumption. - - - - - - - - - - - The sump of the above car was full at the speedo reading of 7596. 7997 1 qrt. 8539 3 pts. Miles for month - 943 to…

scan0295 The oil consumption for Chassis No. GAN 54.
View original record CX. 1220 RC2/L/5.1.38. Re: Chassis No. GAN 54. Oil Consumption. ----------- The sump of the above car was full at the speedo reading of 13589. 14380 1 qrt. Miles for month - 791 to 1 quart of oil -…

scan0296 Oil consumption figures for various trials cars, with a handwritten query about PIII rings.
View original record Mthso. Are the PIII rings in line with 25/30 now. 12.20 Rm S/W. Rm. Oil Consumption. Cx9/KW7.1.38. I attach hereto figures for the month of November in respect of our Trials Car 3-CP-30, and for the…

scan0297 Oil consumption figures for Bentley Trials Cars Nos. B-2-LS and B-4-LS.
View original record Handwritten: Mthe Have these Bentleys 1220 L section rings. Rmc S/W. Rm. Oil Consumption. CxIO/KW7.1.38. I attach hereto figures for the month of December in respect of Bentley Trials Cars Nos.B-2-LS…

scan0298 The oil consumption for car B 2 LS, detailing mileage and oil added.
View original record CX. 1220 Cx 5 JAN 1938 RECEIVED RC6/L/4.1.38. Re: B 2 LS - Oil Consumption. - - - - - - - - - - - - The sump of the above car was full at the speedo reading of 3316. 4180 1 qrt. 4654 1 qtt. POST JAN…

scan0299 The oil consumption for car B 2 LS, showing mileage and quarts of oil added.
View original record S/W Rm Cx. 1220 Scott MTHS Cx RECEIVED 4 FEB RC3/L/3.2.38. Re: B 2 LS - Oil Consumption. The sump of the above car was full at the speedo reading of 4654. 5016 1 qrt. 5934 1 qrt. Miles for month -…

scan0300 Oil consumption figures and extending the submission interval to three months.
View original record 1220 To Cx. from Rm. Rm.1/AP.4.2.38 Thank you for the oil consumption figures contained in Cx.3/KW.3.2.38. These figures are still of considerable interest to us, and we suggest that they should be…

scan0301 Oil consumption figures for specific trials cars over a three-month period.
View original record 1220. S/W. Rm. Oil Consumption. Cx17/KW4.5.38. I attach hereto figures taken over a period of three months in respect of the undermentioned Trials Cars :- 3-CP-10 3-CP-30 3-CM-87 GHO-50 Att:…

scan0302 Record of oil consumption for car 3 CP 10 over a three-month period.
View original record CX. Re: 3 CP 10 - Oil Consumption. The sump of the above car was full at the speedo reading of 6401. 6970 1 qrt. 7660 1 qrt. 7937 1 qrt. 8641 2 qrts. 9765 1 gall. 10944 1 gall. 11792 1 qrt. Taken over…

scan0303 Record of oil consumption for car 3 CP 30, tracking mileage and oil added over a three-month period.
View original record .CX. Re: 3 CP 30 - Oil Consumption. - - - - - - - - - The sump of the above car was full at the speedo reading of 10075. 10429 1 qrt. 10868 2 qrts. 11327 1 qrt. 11582 1 qrt. 12113 1 qrt. 12469 1 qrt.…

scan0304 The oil consumption of car 3 CM 87 over a three-month period.
View original record CX. RC6/L/3.5.38. RECEIVED Re: 3 CM 87 - Oil Consumption. The sump of the above car was full at the speedo reading of 408. 678 2 qrts. Taken over a period of three 1651 1 1/4 galls. months. 2124 3…

scan0305 The oil consumption for chassis GHO 50 over a three-month period.
View original record CX. Re: GHO 50 - Oil Consumption. - - - - - - - - - - - The sump of the above car was full at the speedo reading of 5800. 6027 1 pt. Taken over a period of three 6580 1 qrt. Months. 7197 1 pt. 7637 1…

scan0306 The oil consumption of car B 2 LS before and after engine work.
View original record C.T.S What was done to this engine? Rm CX/ Re: B 2 LS - Oil Consumption. ------------------------- The sump of the above car was full at the speedo reading of 13198. Before going to Works. 14073 1…

scan0307 Oil consumption report for car B 4 LS, comparing an old engine with a newly fitted one.
View original record CX. RC4/L/9.8.38. Re: B 4 LS - Oil Consumption. - - - - - - - - - - The sump of the above car was full at the speedo reading of 7063. Taken over a period of 3 months. Old Engine. 7596 1 qrt.) 7740 1…

scan0308 Record of oil consumption for car 3 CP 30, listing mileage readings against oil top-ups over a three-month period.
View original record CX. RC1/L/9.8.38. Re: 3 CP 30 - Oil Consumption. - - - - - - - - - - The sump of the above car was full at the speedo reading of 12469. 12976 2 qrts. 14106 2 qrts. Taken over a period of 14479 1 qrt.…

scan0309 Log of oil consumption for car 3 CM 87, tracking mileage and oil added over a three-month period.
View original record CX. Re: 3 CM 87 - Oil Consumption. - - - - - - - - - - The sump of the above car was full at the speedo reading of 5712. 6025 1 qrt. 7020 1 qrt. 8215 1 qrt. 8686 1 qrt. 9039 1 qrt. 9260 1 qrt. 9458 1…

scan0310 Oil consumption for car GHO 50 over a three month period.
View original record CX. Re: GHO 50 - Oil Consumption. ------------------------- The sump of the above car was full at the speedo reading of 8418. 9112 1 qrt. Taken over a period 9626 1 qrt. of 3 months. 9829 1 qrt. 10643…

scan0311 Oil consumption figures for B-2-LS and B-4-LS models.
View original record C.T.S. S/W. Rm. Oil Consumption. Cx1/KW10.8.38 I attach hereto figures up to the end of July in respect of B-2-LS and B-4-LS . KW. for Cx. RC4/L9.8.38. RC5/L9.8.38

scan0312 Attaching oil consumption figures for specific trial cars up to the end of July.
View original record CES SWDC. 1220 File S/W. Rm. Oil Consumption. Cx1/KW15.8.38 I attach hereto figures to the end of July in respect of Trials Cars Nos. 3-CP 30, 3-CM-87 and GHO-50. Encs. RC1/L9.8.38 RC2/L9838…

scan0313 Overhaul and fitting of engines to chassis B.2-LS and B.4-LS, including a comprehensive list of parts used.
View original record Rm/CTS. Hd/FHA1/IB.16.8.38. -------- Reference your enquiry regarding engine now fitted to chassis B.2-LS. and B.4-LS. CHASSIS B.2-LS. Engine ex chassis B.149-JY. overhauled as detailed below:- 1…

scan0314 Oil consumption for two chassis fitted with spare engines after servicing.
View original record To Du 1220 . Oil Consumption With reference to the memo. Cx1/KW.10-8-38. Concerning the two chassis B-2-LS and B-4-LS. Both these cars have been fitted with spare engines, in which case the oil…

scan0315 The necessity of continuing to send monthly petrol consumption figures.
View original record 1220 S/W. Rm. Petrol Consumption Figures. Cx1/KW5.11.38. Is there any necessity for me to continue sending you these monthly, please ? Cx. Ruel

scan0316 To cease sending petrol consumption figures.
View original record 1220 W/S. Cx. from Rm. Rm6/R.8.11.38. Petrol Consumption Figures. With reference to Cxl/KW5.11.38., there is no need for you to continue sending us these figures. Rm.

scan0317 Oil consumption tests comparing different Aerolite pistons and rings on a 28.G.VI engine.
View original record 1220 To By. c. to Da. c. to Da/Jnr. c. to Mx. Rm/WB.2/JH.1/17.3.39. Oil Consumption Tests on 28.G.VI. We have carried out oil consumption tests to determine the comparative values for the following -…

scan0318 Oil consumption, air/oil temperatures, and average speed over three sets of test runs.
View original record -2- Rm/WB.2/JH.17.3.39. A. Oil Cons. Av. Air Temp. Av. Oil Temp. Av. Speed. 1st. run. 1244 m.p.g. 5°C. 72°C. 43.2 m.p.h. 2nd. run 1584 5°C. 70°C. 42.4 m.p.h. 3rd. run. 1584 13°C. 78°C. 44.1 m.p.h.…

scan0319 Engine oil consumption and 'blow-by' with comparisons between different piston ring types and valve stem designs.
View original record 1220 COPY FOR FILES. H Rm. To Rm. Typed. 18.3.39. OIL CONSUMPTION & "BLOW-BY". Herewith replies to your questions concerning the above as far as our records permit. (1) Blow-by with pinned rings ?…

scan0320 Chevrolet oil consumption, throttle opening figures, and the status of chrome plating tackle.
View original record -2- (4) Chevrolet oil consumption ? After the car had run 5,000 miles the consumption was 3,600 m.p.g. at 41 m.p.h. At 12,000 miles a consumption was taken at an average speed of 45 m.p.h. on Castrol…

scan0321 Outlining the procedure for recording oil and petrol consumption on experimental cars.
View original record 1220. Rm/FD. Rm.9/ML.5.3.40. OIL CONSUMPTION ON EXPERIMENTAL CARS. After our conversation we should be glad if you would keep a very accurate record of the oil consumption and petrol consumption of…

scan0322 Cross-reference note pointing to another file regarding petrol and oil consumption.
View original record 1220 See also File No 1249 (Petrol Consumption) for Rm/Wym.4/SW.30.9.40 which deals at the same time with OIL CONSUMPTION. ******

scan0323 Engine specifications, testing procedures, and component rationalisation.
View original record C O P Y. Rm/CTS. from Rm. Rm.16/ML9.9.40 1. RATIONALISED ENGINE SPECIFICATIONS. When the 8-cylinder engine was built last week, I was told that many errors were found in the L.O.P. I am relying on you…

scan0324 Outlining the procedure for oil tests on experimental cars.
View original record Rm/Wym. from Rm. Spare Rm.13/ML.29.10.40. OIL TESTS - EXPERIMENTAL CARS. I have been looking at the results of the tests we have been carrying out on our cars; so far they have been rather haphazard…

scan0325 Instructions for oil and filter element changes and oil sample testing procedures.
View original record - 2 - Cont'd. Rm.13/ML.29.10.40. 3.B.50. Start again with clean oil and change element every 3,000 miles. Treat samples as 9.B.V, 4.B.50. This oil is not cleaning up properly. Take a sample test tube…

scan0326 Petrol and oil consumption figures for various experimental cars and lorries.
View original record To Rm. from Rn/Wym. 1220 Rn/Wym.6/ET.3.12.40. PETROL AND OIL CONSUMPTION. Herewith a list of petrol and oil consumptions on our Experimental cars and lorries, to date:- Petrol Oil 1-B-50 (Lorry) B.60…

scan0327 Table comparing engine component mileage and oil consumption related to connecting rod oil jet holes.
View original record 1220 THESE ENGINES HAVE .031 OIL JET HOLES IN CONN.RODS CHASSIS | Oil Consumption M.P.G. | Cyl. Block Mileage | Conn. Rod Mileage | Piston Mileage. | Notes --- 8.B.V. | 1106.4 | 2031 | EW.1764 Wraith…

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