Rolls-Royce Archives
| Identifier | Entry | ||
| scan0001 | Requesting the production of trial B.60 and B.80 camshafts to address poor idling issues, with specific timing details. | ||
| View original record | 1044 To HPS. from Rm/Swdl. Rm/Swdl.2/MH.2.3.39. B.60 & B.80 CAMSHAFTS. Will you please make 2 off each of the following cam-shafts for trial in view of poor idling on 29.G.VI. with the B.60 engine.… | ||
| scan0002 | List of new and standard parts required for a Sperry Torsiograph experiment on Bentley 60 & 80 models. | ||
| View original record | 10HH HRS. c. Rm. c. Rd/JRS By/Ald.1/AW.2.3.39 BENTLEY 60 & 80. SPERRY TORSIOGRAPH. Please receive herewith 2 blue prints of the following new drawings detailed in accordance with Rm/JRS.2/MH.27.2.39.… | ||
| scan0003 | Exhaust manifold and downtake for the C.I. Conventional 8 engine. | ||
| View original record | BY/NS IOHH c. Rm. DA.1/G.2.3.39. Noted Please file WYM C.I. CONVENTIONAL 8 - EXHAUST SYSTEM. Please receive herewith :- E.CD.1156 (2 sheets) Exhaust Manifold and Downtake - C.I. Conv. 8. The twin… | ||
| scan0004 | Comparing the cost and design of different push rods for B.60 and B.80 engines. | ||
| View original record | 1044 To HPS. from Rm/Swdl. c. By/CS. c. Da/Jnr. c. Da/McS. Rm/Swdl.1/MH.2.3.39. B.60 & B.80 PUSH RODS. The cost figures of the various types of push rods compare as follows:- .4 carbon steel solid… | ||
| scan0005 | The distribution of blueprints and production of the exhaust system for the B.80 engine in the Wraith 80 chassis. | ||
| View original record | 104H noted 2c/u wym To: Rm/WYM BY/Cs BY/HEB c. to HPS c. to RHC/Wld c. to ROY/Les NY/NS2/MG.3.3.39 305 VII B.80 ENGINE IN WRAITH 80 CHASSIS EXHAUST SYSTEM We send you herewith Blue Prints of:… | ||
| scan0006 | Direct comparison of cylinder head gaskets for B.60 and B.80 engines. | ||
| View original record | 1044 To Roy. from Rm/Swdl. Rm/Swdl.2/MH.4.3.39. We wish to make a direct comparison of cylinder head gaskets on the B.60 and B.80 engines which appear to be rather severe on gaskets. Up to the present… | ||
| scan0007 | Strip examination report on the condition of a Bentley 80 No. 1 Unit engine. | ||
| View original record | 1044 To Rm. from HPS/EW. c. to By. c. to Da. c. to Rm/Swdl BENTLEY 80 No. 1 UNIT. Herewith a summary of the strip examination on the above unit in accordance with HPS/WSC.8/BA.27.2.39 :- Crankcase &… | ||
| scan0008 | Inspection report detailing the condition of various engine components, page 2. | ||
| View original record | -2- HPS/EW.1/CB.6.3.39. Cylinder Head. LOP.EB.4131. The cylinder head has been chalk tested and both the head and rocker mechanism are in good condition. Valves & Fittings. LOP.EB.4131 Both inlet and… | ||
| scan0009 | Photograph showing the main bearings from a Bentley B80 No.1 Unit after 68 hours of running. | ||
| View original record | BENTLEY B80 No.1 UNIT. Main Bearings after 68 hrs. running. | ||
| scan0010 | Photograph of Bentley SO No.1 Unit connecting rod bearings after 68 hours of running. | ||
| View original record | BENTLEY SO No.1 UNIT. Connecting Rod Bearings after 68 hrs. running. | ||
| scan0011 | Photograph of bottom tappets from a Bentley SO No.1 Unit after 56 hours of running. | ||
| View original record | BENTLEY SO No.1 UNIT. Bottom Tappets after 56 hrs. running. | ||
| scan0012 | Listing the weights of various engine components and calculating a total weight. | ||
| View original record | Engine as weighed 453lbs. this does not include Fan blades (say 2lbs) " belt ( " 1lb ) Dynamo. 22lbs - 12oz Self starter 24lbs. Rockers, shaft or pedestal 4lbs app. Manifolds & Carb (as Wth 17lbs 4oz)… | ||
| scan0013 | Note explaining the methodology for calculating the total weight of the B.60 engine. | ||
| View original record | To Rm. In calculating the total weight of the B.60 engine, individual items such as fan, manifold, & clutch case, were added onto the weight of the engine that was photographed, as they became… | ||
| scan0014 | Photograph of the B 60 engine unit, near side view. | ||
| View original record | B 60 ENGINE UNIT NEAR SIDE NEG. No 6089 D SEPT. 1938 | ||
| scan0015 | Photograph showing the off side of a B.60 engine unit. | ||
| View original record | B 60 ENGINE UNIT OFF SIDE NEG. Nº 6088 D SEPT 1938 | ||
| scan0016 | Front-view photograph of a B.60 engine unit. | ||
| View original record | B. 60 ENGINE UNIT FRONT NEG. Nº 6087 D SEPT 1938 | ||
| scan0017 | Photograph showing a broken inlet valve spring and washer from a Bentley GO No.1 unit. | ||
| View original record | BENTLEY GO No.1 UNIT. Inlet Valve Spring & Washer after 68 hrs. Running. | ||
| scan0018 | Test report detailing the dimensions and wear of main bearings and a crankshaft following a 68-hour running test. | ||
| View original record | MAIN BEARINGS DIMENSIONS UNIT Nọ BEN. 80. Nọ1. PASSED TO TEST :- 9-12-38 COMPLETED TEST :- 23 2 39 RUNNING TIME :- 68 HRS. MILEAGE :- --- (18HRS. 50MINS F.T.) CRANKSHAFT: EB.4104 MATL: 4461/1 CAB.… | ||
| scan0019 | Test report detailing main bearing dimensions before and after a running test. | ||
| View original record | MAIN BEARINGS DIMENSIONS UNIT Nº BEN. 80. No. 1 PASSED TO TEST :- 9-12-38 COMPLETED TEST :- 23-2-39 RUNNING TIME :- 68 HRS MILEAGE :- (18 HRS 50 MINS F.T.) CRANKSHAFT: EB.4104. MATL: 4461/1CAB TEST… | ||
| scan0020 | Test report detailing before and after measurements for connecting rod bearings and crankpin dimensions. | ||
| View original record | UNIT Nọ BEN. 80 No.1 PASSED TO TEST :- 9-12-38 COMPLETED TEST :- 23-2-39 CONN: ROD BEARINGS & CRANKPIN DIMENSIONS CONN: ROD BEARINGS :- EW. 1749 MATL :- AC.9. CRANKSHAFT :- EB. 4104 (EX. 31604) MATL… | ||
| scan0021 | Test report detailing the dimensions and wear of connecting rod bearings and crankpins. | ||
| View original record | UNIT No BENT. 80 No1 PASSED TO TEST :- 9-12-38 COMPLETED TEST :- 23-2-39 CONN: ROD BEARINGS & CRANKPIN DIMENSIONS CONN: ROD BEARINGS :- EW.1743 MATL :- AC.9. CRANKSHAFT :- EB.4104 (EX.31604). MATL :-… | ||
| scan0022 | Test report detailing cylinder bore dimensions and wear for a Bentley 80 No.1 unit. | ||
| View original record | PASSED TO TEST:- 9-12-38 COMPLETED TEST:- 23-2-39 UNIT Nọ BENTLEY 80.No1. CYLINDER BORE DIMENSIONS CYLINDER BLOCK EB.3950 MATL I/C RUNNING TIME:- 68 HRS. (18 HRS. 50MINS FT) MILEAGE:- MEASUREMENTS AT… | ||
| scan0023 | Cylinder bore dimensions and wear measurements for unit BEN.80.No 1. | ||
| View original record | UNIT Nº BEN.80.No 1. PASSED TO TEST:- 9.12.38 COMPLETED TEST:- 23.2.39 CYLINDER BORE DIMENSIONS CYLINDER BLOCK EB.3950 MATL 1/C RUNNING TIME:- 68 HRS. (18 HRS 50 MINS F.T) MILEAGE:- MEASUREMENTS AT… | ||
| scan0024 | Test report detailing valve dimensions and pocketting for a Bentley 80 No.1 unit after a 68-hour run. | ||
| View original record | UNIT NO BENTLEY 80. No.1 VALVE DIMENSIONS PASSED TO TEST 9-12-38 COMPLETED TEST 23-2-39 INLET VALVES: — CYLINDER HEAD — EXHAUST VALVES: - EB.7378 (SOD.COOLED) RUNNING TIME:- 68 HRS. MILEAGE:- (18 HRS.… | ||
| scan0025 | Test report detailing valve dimensions and wear for a Bentley 80 No.1 unit. | ||
| View original record | UNIT Nº BENTLEY 80 Nº1 PASSED TO TEST 9-12-38 COMPLETED TEST 23-2-39 VALVE DIMENSIONS INLET VALVES :- EB 3853-S/65 CYLINDER HEAD - EXHAUST VALVES :- RUNNING TIME :- 68 HRS. MILEAGE :- (18 HRS 50 MINS… | ||
| scan0026 | Piston profile measurements and wear data for 'Aerolite' Standard Bentley pistons following a 68-hour test. | ||
| View original record | UNIT No B.80No.1. PISTON PROFILES PISTONS 'AEROLITE' IDENTIFICATION No M.27. STANDARD BENTLEY PASSED TO TEST 9-12-38 COMPLETED TEST 23.2.39 RUNNING TIME 68 HRS. MILEAGE (18 HRS 50 MINS F.T.) [Diagrams… | ||
| scan0027 | Piston profiles and wear measurements for 'Aerolite' standard Bentley pistons. | ||
| View original record | UNIT No BEN. 80; No 1. PISTON PROFILES PISTONS: 'AEROLITE'. IDENTIFICATION No STANDARD BENTLEY. PASSED TO TEST 9-12-38 COMPLETED TEST 23-2-39 RUNNING TIME 68 HRS MILEAGE (18 HRS 50 MINS F.T.) RELIEVED… | ||
| scan0028 | Requesting authorisation for an experiment on the B.80 induction system. | ||
| View original record | 1044 To HPS. from Rm/CTS. Rm/CTS.1/MH.7.3.39. B.80 INDUCTION SYSTEM. On the eight cylinder engine intermediate cylinders are over-rich at low speeds. We think this is due to the inside bends of the… | ||
| scan0029 | Instructing HPS to arrange for a torsional indicator drive shaft to be taken from the camshaft of a B. 80 unit. | ||
| View original record | 1044. To HPS. Rm/Swdl 2/ER 7.3.39. B. 80 Unit. Will you please instruct for a torsional indicator drive shaft to be taken from the camshaft of the above unit. Rm/Swdl. | ||
| scan0030 | Modification to the B.80 fan pulley, changing it to a two-part welded construction. | ||
| View original record | BY/NS. c. Rm. c. Rm/Smdl. c. ROY/Les. 10HH DA.6/G.3.3.39. FJH B.80. MODIFIED FAN PULLY CONSTRUCTION. Please receive herewith E.CD.1240 Built-up Fan Pulley. B.80. In view of the difficulty experienced… | ||
| scan0031 | Modifications required for an inverted tooth chain drive for the camshaft. | ||
| View original record | BY/NS. c. Rm. c. Rm/Swdl. DA.3/G.8.3.39. 1044 B.60 INVERTED TOOTH CHAIN DRIVE FOR CAMSHAFT. Please received herewith :- E.CD.534 Chain Driven Camshaft Sprockets - Bentley 60. A new camshaft is… | ||
| scan0032 | Chain types for endurance testing and requesting an experiment on a B.60 chain drive. | ||
| View original record | - 2 - DA.3/G.8.3.39. removable pin may be used in the chain, but for endurance test an endless chain is recommended. Will you please detail and instruct for the B.60 experimentally to ascertain if a… | ||
| scan0033 | Comparison of the weights for the B.60 and B.80 engines. | ||
| View original record | 1044. COPY FOR FILES. To Rm. Typed. 8.3.39. COMPARATIVE WEIGHTS B.60 & B.80 ENGINES. B.60. Engine complete with Dynamo, Fan and belts, Self Starter, Clutch, Clutch case, A.C. oil filter, Coils, Inlet… | ||
| scan0034 | Modified two-part welded construction for a fan pulley. | ||
| View original record | 1044 440 BY/NS. c. Rmy c. Rmy/Swdl. o. ROY/Les. DA.6/G.S.3.39. Rm / FJH B.80. MODIFIED FAN PULLEY CONSTRUCTION. Please receive herewith :- E.CD.1240 Built-up Fan Pulley. B.80. In view of the… | ||
| scan0035 | Modifications for the water connections between a B.80 engine and radiator in a B.38 chassis. | ||
| View original record | 10HH also 1039 DI/MS. 490 c. Rm/FJH. DA.5/G.8.3.39. B.80 ENGINE IN B.38 CHASSIS - WATER CONNECTIONS BETWEEN ENGINE AND RADIATOR. Please receive herewith :- E.CD.1238 Top Water Pipe - B.80 engine in… | ||
| scan0036 | Instructions for a modified Push Rod and Adjusting Screw for Bentley 60 and 80 Chassis, including new part numbers. | ||
| View original record | c. Rm/Swdl. 1044 File BY/CS4/EH.9.3.39. Re Bentley 60 and Bentley 80 Chassis. Valves & Fittings - Section 5060. Modified Push Rod and Adjusting Screw in accordance with Rm/Swdl.1/MH.2.3.39. Please… | ||
| scan0037 | Failure of a B.80 No.2 unit's main bearing, its return for inspection, and a request for a replacement unit. | ||
| View original record | 1044 To HPS. from Rm/Swdl. Rm/Swdl.2/MH.9.3.39. B.80 NO.2 UNIT. The centre main bearing (R.R. Whitemetal) has failed and we are returning the unit to be dismantled for inspection. Whilst dismantled… | ||
| scan0038 | Design and required modifications for a crankshaft damper and spring drive for the Bentley 80 and C.I. Conv. 8 models. | ||
| View original record | [Handwritten] WYMAN notice [Crossed out in red] Please note Rm [Red signature] File 1044 BH/NS c. Rm. [Redacted text] [Typed] DA.2/G.11.3.39. BENTLEY 80 and C.I. CONV. 8. CRANKSHAFT DAMPER AND SPRING… | ||
| scan0039 | New drawings for a Bentley 60 Chassis cylinder head, including blueprints. | ||
| View original record | 10HH File BY/CS1/EH.14.3.39. c. Rm/Swdl. Re Bentley 60 Chassis. Cylinder - Section 5050. PD.368 - Cylinder Head, Sloping Valve and Large Throat. Please receive herewith blue prints of the following… | ||
| scan0040 | Top water connection for the B.80 engine in the Wraith 80 chassis. | ||
| View original record | 10HH ?+ 666 HY/NS. O. Rm. c. Rm/FJH. DA.9/G.14.3.39. B.80 ENGINE IN WRAITH 80 CHASSIS - TOP WATER CONNECTION. Please receive herewith F/14 E.CD.1239 Top Water Pipe - B.80 Engine in Wraith 80 chassis.… | ||
| scan0041 | Requesting schemes for adapting a Buick harmonic damper for a B.80 unit and drawing a modified Aerolite piston. | ||
| View original record | 10 HH r 125B. To By/Ald. from Rm/Swdl. Rm/Swdl.1/MH.15.3.39. Will you please scheme out the following:- (1) Adapting the Buick harmonic damper element for trial on the B.80 unit without any alteration… | ||
| scan0042 | Test results on a cast iron engine unit in a 29.G.VI car, comparing carburettor performance for slow running. | ||
| View original record | 1044+ 6002 To By. c. to Da. c. to Da/Jnr. Rm/Wym.7/JN.15. .39. Cast iron unit in 29.G.VI. car. We have now completed our tests on the cast iron engine unit No.B.60 No.2 fitted in 29.G.VI. car for best… | ||
| scan0043 | List of parts required for the inlet pipes and carburettor on the Bentley 60 and Wraith III chassis. | ||
| View original record | By/Ald.1/AW.16.3.39. BENTLEY 60 and WRAITH 111 CHASSIS. INLET PIPES - SECTION 507C. Please receive herewith 2 blue prints of the following with 2 extra prints of parts marked a: BENTLEY 60. SCD.1223.… | ||
| scan0044 | New drawings for the Bentley 60 Chassis cylinder head and valve mechanism. | ||
| View original record | To H.S. c. BY. c. RMC/Wld. c. Rm/Swdl. c. Roy/Les. for info. 10HH Filee BY/CS1/EH.17.3.39. Re Bentley 60 Chassis. Cylinder - Section 5050. Valves & Fittings - Section 5060. PD.368 - Cylinder Head,… | ||
| scan0045 | Alterations to stiffened tappet covers to improve their seal. | ||
| View original record | [Handwritten top centre] Piles 1044 [Handwritten top right] Slide BY/NS. c. Rm. [Text is struck through] c. Rm/Swdl. [Text is struck through] DA.4/G.17.3.39. B.60 - STIFFENED TAPPET COVERS. Please… | ||
| scan0046 | Instructions regarding water connections between the B.80 engine and radiator for the first Wraith 80 chassis. | ||
| View original record | c. Rm/FJH. DA.1/G.17.3.39. B.80 IN WRAITH 80 CHASSIS. WATER CONNECTIONS BETWEEN ENGINE AND RADIATOR FOR 1ST. CHASSIS ONLY. Please receive herewith :- E.CD.1241 Top Water Pipe - B.80 Engine in W.80… | ||
| scan0047 | Modification for stiffened tappet covers on the B.60 and experimental B.80 engines. | ||
| View original record | RV/NS 1044 c. Rm. c. Tmy/Swdl. DA.2/G.17.3.39. Files B.80. STIFFENED TAPPET COVERS. Please receive herewith :- Slide E.CD.1244 Stiffened Tappet Covers. B.80. This modification follows the lines of the… | ||
| scan0048 | The exhaust valve guide and stem for the B.60 engine, suggesting component testing for comparison. | ||
| View original record | 1044 Rm/Swdl. from Rm. Rm8/R.18.3.39. EXHAUST VALVE GUIDE & STEM. B.60. Are you satisfied that we have the latest drawings on the exhaust guide valve and stem on B.60 engine? Generally speaking, there… | ||
| scan0049 | New parts and instructions for the Bentley 60 Chassis with a High Power Head. | ||
| View original record | IOHH Files BY/CS2/EH.21.3.39. Re Bentley 60 Chassis (High Power Head). Cylinder - Section 5050. Valves & Fittings - Section 5060. PD.368 - Cylinder Head, Sloping Valve and Large Throat. PD.378 - Valve… | ||
| scan0050 | Providing blueprints for the water connection on the first Bentley 80 in Wraith 80 chassis. | ||
| View original record | 1044 To: HPS. Ref: to HS/cs. c. to Rm/FJH. BY/NS.5/MG.21.3.39 BENTLEY 80 in WRAITH 80 CHASSIS 1st CHASSIS WATER CONNECTION We send you herewith a Blue Print of: E.CD.1241 - Top Water Pipe - B.80… | ||
| scan0051 | Instruction to manufacture 100 Thermo couple sets to a 2' overall length. | ||
| View original record | IOHH To HPS. Rm/Ed.4/JH.23.3.39. B.60. Will you please make up 100 Thermo couple sets. These should be similar to those instructed in Lr/LOV/BET.4/GC.15.2.39. but should be to the 2" overall length.… | ||
| scan0052 | Modifications to the clutch and associated parts for the B.60 and B.80 chassis. | ||
| View original record | c. Rm. DA.8/G.24.3.39. B.60 and B.80. CHASSIS. WYMAN-File Please receive herewith :- G.CD.1270 Modifications to Clutch etc. The clutch casing has been shortened by .125 in order to bring the gearbox… | ||
| scan0053 | Requesting the dispatch of two 11' Long clutches for B.80 engines to B. & B. in Leamington Spa. | ||
| View original record | 1044 812. 4 1110 To HPS. Rm/NRC.12/JH.24.3.39. re 11" Clutch. B.80 Engines. Will you please send to B. & B.,Leamington Spa, the two 11" Long clutches which have been prepared for the B.80 engines.… | ||
| scan0054 | Letter to Borg & Beck Co. Ltd. regarding the supply and modification of clutches for experimental engines. | ||
| View original record | = Roy EXPERIMENTAL DEPARTMENT. Rm/NRC.11/JH. 24th. March, 1939. Messrs. Borg & Beck Co.Ltd., Tachbrook Road, Leamington Spa. For the attention of Mr. Armitage. Dear Sirs, In confirmation of our 'phone… | ||
| scan0055 | From RM/Swdl to HPS listing a series of outstanding jobs in order of urgency. | ||
| View original record | 1044 + 4SH To HPS. from Rm/Swdl. Rm/Swdl.6/MH,27.3.39. The following is a list of the outstanding jobs for which we should like an idea as to when they will be completed. The list is in order of… | ||
| scan0056 | Problems of fitting a mechanical petrol pump to 8-cylinder engines. | ||
| View original record | 1044 Ry. from Rm. c. Da. c. Da/Hdy. c. Da/EV. c. Da/Jnr. c. EY/MS. c. Rm/JBD. RmB/R.28.3.39. The existing 8-cyl. engines have facings for the mechanical petrol pump in a position where, if fitted, the… | ||
| scan0057 | Analysis of power loss and performance in various exhaust system configurations on a B.60 engine unit. | ||
| View original record | 104H r 623 To By. from Rm/Swdl. c. Da. c. Da/Ev. c. Rm/Wym. Rm/Swdl.2/MH.29.3.39. EXHAUST SYSTEM TESTS ON B.60 UNIT. An analysis of the Wraith type of exhaust system ECD.872/79/90 as adapted to a B.60… | ||
| scan0058 | Comparison of power loss due to exhaust back pressure between a new B.60 engine unit and a conventional unit. | ||
| View original record | -2- Rm/Swdl.2/MH.29.3.39. Being a completely new design of unit, one of the first queries is whether this type of unit is more susceptible to power loss by exhaust back pressure than the conventional… | ||
| scan0059 | Performance graph analyzing various exhaust system configurations for a B60 engine. | ||
| View original record | EXHAUST SYSTEM ANALYSIS ON B60 (Nº3 UNIT) WRAITH SYSTEM ECO 872/79/90 WITH BOTH 1½" & 2" TAIL PIPE (S/8.82) CONDITION OF TEST STD BY INDN SYSTEM 2 - 1½ SW CARBS LONG DURATION INLET VALVE TIMING .030… | ||
| scan0060 | Graph comparing percentage power loss versus exhaust back pressure for B60 and BV engines at a constant 4000 RPM. | ||
| View original record | COMPARISON OF EXHAUST BACK ON B60 & BV ENGINES TESTS TAKEN FROM CONSTANT 4000 RPM (S 81) B60 - OPEN EXHAUST 139 BHP CONDITIONS AS CURVE (S) BV OPEN EXHAUST 125 BHP PERCENTAGE POWER LOSS TO OPEN… | ||
| scan0061 | General programme of development for the B.60 unit, detailing a series of investigations and tests. | ||
| View original record | 1044 COPY FOR FILES. To Rm. from Rm/Ed. Typed 30.3.39. B.60 DEVELOPMENT. The following is a general programme of development for the above unit. (1) Preliminary investigation work on various… | ||
| scan0062 | List of investigation points for engine component and performance testing. | ||
| View original record | -2- (9) Investigation of valve and seat temperatures as affected by the C.R. and throat area, tests being carried out concurrently with item (2) and ultimate results compared with single cylinder… | ||
| scan0063 | Comparison between hairpin type and helical valve springs. | ||
| View original record | 10HH & 1360. TO By. c. to Da. c. to Da/JNR. Rm/JRS.1/JH.30.3.39. COMPARISON OF HAIRPIN TYPE & HELICAL VALVE SPRING. A pair of hairpin type springs were obtained and compared with the B.60 valve spring… | ||
| scan0064 | Technical memorandum discussing the advantages of hairpin type valve springs over helical springs. | ||
| View original record | -2- Rm/JRS.1/JH.30.3.39. The hairpin type valve spring has several advantages over the helical type. Firstly the dynamic effect of the mass of the spring is less, thus slightly raising the bouncing… | ||
| scan0065 | Instruction to build all 8-cylinder engines with a flexible flywheel and 11' Long clutch until further notice. | ||
| View original record | 10HH + 1110 HPS. from Rm. Rm3/R.1.4.39. Will you please build all 8-cylinder engines, until further notice, with a flexible flywheel and 11" Long clutch to Rm.573. Rm. | ||
| scan0066 | To Millwrights requesting the urgent installation of a B.60 engine into No.5 Test Bed. | ||
| View original record | 10H4 To Millwrights from Rm/Swdl. Rm/Swdl.2/MH.3.4.39. NO.5 TEST BED. We are particularly anxious to install a B.60 engine in the above test house in accordance with EJJ/DH.20/JA. 30.3.39, and would… | ||
| scan0067 | Modification to clutch to crankcase dowels on B.60 and B.80 chassis. | ||
| View original record | 1044 BY/NS. c. Rm. DA.1/G.6.4.39. WYMAN Is this OK Rm Yes. YGW B.60 and B.80. CHASSIS. Please receive herewith :- G.CD.1305 Modification to Clutch to crankcase dowels. The solid taper dowels have been… | ||
| scan0068 | Requesting the completion of all patterns for the Conventional 8 engine. | ||
| View original record | 1044 To HPS. from Rm/Swdl. c. Sft/Lw. c. RHC/Vs. c. Da/Jnr. c. Da/Mcs. c. By/CS. Rm/Swdl.2/MH.13.4.39. CONVENTIONAL 8 ENGINE. In our memo Rm/Swdl.5/JH.20.2.39 we instructed that patterns should be… | ||
| scan0069 | Alteration to the specifications for B.60 engine camshafts. | ||
| View original record | 1044 To HPS. from Rm/Swdl. Rm/Swdl.1/MH.13.4.39. B.60 CAMSHAFTS. Further to our memo Rm/Swdl.2/MH.2.3.39 regarding the making of two experimental camshafts for the B.60, and two for the B.80 engine,… | ||
| scan0070 | Blueprints for parts to adapt a Buick type harmonic damper for the Bentley 80 chassis. | ||
| View original record | JOHN HPS. c. Rm. c. Rm/Swdl. By/Ald.2/AW.13.4.39. BENTLEY 80 CHASSIS. SECTION 5020. BUICK TYPE HARMONIC DAMPER. Please receive herewith 2 blueprints of each of the following drawings:- SCD.1275. Buick… | ||
| scan0071 | Crankshaft modification to enable a B.5 gearbox to be fitted to B.60 and B.80 engines. | ||
| View original record | 1044 BY/NS. c. Rm. c. De/Mc S. c. Rm/Swdl. DA.3/G.15.4.39. BENTLEY 60 and BENTLEY 80. We send you herewith the tracing of E.CD.1321 Modification to crankshaft to enable B.5 gearbox to be fitted to the… | ||
| scan0072 | Report comparing the performance of sodium-filled versus solid exhaust valves on B.80 and B.60 engines. | ||
| View original record | 104H To By. from Rm/Swdl. c. Hs. c. Da. c. Da/Jnr. c. Da/McS. Rm/Swdl.2/MH.21.4.39. EXHAUST VALVES AND THEIR COOLING ON B.80 AND B.60 ENGINES. As stated in our original report on the B.60 engine, very… | ||
| scan0073 | The effects of raised exhaust valve guides on valve head temperatures in a B.80 unit. | ||
| View original record | -2- On the B.80 unit we have tried the effect of the raised exhaust valve guide bosses to PD.266, whereby the effective water cooling round the guide is raised by .250 nearer the valve head. So far as… | ||
| scan0074 | Trial of Nickel-Chrome-Molybdenum alloy exhaust valve seats for B.60 & B.80 units. | ||
| View original record | 1044 To HPS. from Rm/Swdl. c. RHC/Vs. Rm/Swdl.2/MH.22.4.39. B.60 & B.80 EXHAUST VALVE SEATS. We should like to try some exhaust valve seats for the above units made in our own works in… | ||
| scan0075 | Torsional vibration tests conducted on a B.80 No.2 engine. | ||
| View original record | 10HH (See file 116. for Rm's covering note Rm S/R.2.H.4.39) Rm/JR.2/JH.22.4.39. TORSIONAL VIBRATION TESTS ON B.80 No.2. With Report Rm/JR.10/JH.13.2.39. was a curve show-ing the variation with… | ||
| scan0076 | Inability to detect less important harmonics due to instrument accuracy limits. | ||
| View original record | -2- Rm/JRT.2/JH.22.4.39. The less important harmonics i.e. the 2,6,10, the 1,5,9 and the 3,7,11 series of orders cannot be picked out on the curve, but these are small, probably less than the limits… | ||
| scan0077 | Graph showing Summers torsiograph results for Engine B 80 Unit No 2 without a damper. | ||
| View original record | SUMMERS TORSIOGRAPH RESULTS ON ENGINE B 80 UNIT Nº 2 WITHOUT DAMPER AMPLITUDE DEGREES 1.4 1.2 1.0 .8 .6 .4 .2 0 10½ 9½ 8 6½ 5½ 4½ 4 3½ ENGINE R.P.M 1000 2000 3000 4000 5000 FIG 1 RM/JRS | ||
| scan0078 | Torsional oscillation tests conducted on a B.80 No.3 engine with an increased diameter crankshaft. | ||
| View original record | Rm/JRS.1/JH.22.4.39. TORSIONAL OSCILLATION TESTS ON B.80 No.3. (Increased diameter Crankshaft). Two tests were carried out on this engine, both at full throttle and minimum advance for maximum power… | ||
| scan0079 | Technical analysis of torsional rigidity and vibration in engine and chassis components. | ||
| View original record | -2- Rm/JRS.1/JH.22.4.39. In a chassis the torsional rigidity of the transmission system is much less than that of the short shaft to the brake and consequently the frequency of this vibration is below… | ||
| scan0080 | Graph showing results of torsional oscillation tests on a B.80 No 3 engine with a 2.75 DIA shaft. | ||
| View original record | TORSIONAL OSCILLATION TESTS ON B.80 NO 3 (2.75 DIA SHAFT) STD. B.80 DAMPER SET 222 LBS FT / DEGREE STD. B.80 WITH DAMPER BEST SETTING (FOR COMPARISON) AMPLITUDE DEGREES ENGINE R.P.M. FIG 1 I.R.S.… | ||
| scan0081 | Graph showing the results of torsional oscillation tests on a B.80 No. 3 engine with a 2.75' diameter shaft, without a damper. | ||
| View original record | TORSIONAL OSCILLATION TESTS ON B.80 NO. 3 (2.75 DIA SHAFT) No DAMPER AMPLITUDE DEGREES ENGINE R.P.M. FIG. 2 JRS 28.3.33 Y-Axis labels: 1.4, 1.2, 1.0, .8, .6, .4, .2, 0 X-Axis labels: 0, 1000, 2000,… | ||
| scan0082 | Torsional oscillation test results for a B.80 No.3 engine with a 2.75 diameter shaft and no damper. | ||
| View original record | TORSIONAL OSCILLATION TESTS ON B.80 NO. 3 (2.75" DIA SHAFT) NO DAMPER. AMPLITUDE 6.5° 1800 R.P.M. AMPLITUDE 3.5° 3600 R.P.M. FIG 3 T.R.S. 29.3.39 | ||
| scan0083 | Main dimensions of a B.80 crank-throw. | ||
| View original record | MAIN DIMENSIONS OF B.80 CRANK - THROW B.80 Nᵒ 2 TO E.B. 4104 B.80 Nᵒ 3 TO EX. 33947 1.375 1.125 DIA. 1.998 DIA. 1.500 RAD. 3.9375 RAD. 1.629 RAD. .500 DIA. .650 2.498 DIA B.80 Nᵒ 2 2.750 DIA B.80 Nᵒ 3… | ||
| scan0084 | Request to arrange for the production of dies for eight-cylinder engine crankshaft forgings. | ||
| View original record | ROY/Iss. 1044 c. Rm. c. HPS. BY.2/G.26.4.39. EIGHT CYLINDER ENGINE. [Handwritten in red: Rm] Would you kindly make the necessary arrangements to have dies sunk for the production of the above… | ||
| scan0085 | Requesting a modification to a Bentley 80 induction pipe hot spot. | ||
| View original record | IOH H To HPS. Rm/CTS.18/JH.27.4.39. BENTLEY 80 INDUCTION PIPE. Will you please have A. Ridge produce and fit the modification to the hot spot shown on attached sketch Rm.590. The induction pipe is… | ||
| scan0086 | Blueprint of a water hot spot on a B.80 induction pipe, with a proposed welded sheet aluminium water jacket. | ||
| View original record | RM 590 WATER HOT SPOT. B.80. INDN. PIPE. PROPOSED WATER JACKET FROM SHEET ALUM. WELDED IN POSTION. AM 690 CTS | ||
| scan0087 | Suggestion that a spring drive could reduce gear rattle on crankshafts, making the damper more effective. | ||
| View original record | 10HH J 1116 By. from Rm. c. Da. c. Da/Jnr. Rm2/R.27.4.39. The suggestion that the spring drive takes out gear rattle on crankshaft periods and so apparently makes the damper more effective, is… | ||
| scan0088 | Torsional oscillation tests on a B.60 No.4 engine fitted with a Wraith spring drive. | ||
| View original record | Rm/JRS.1/JH.28.4.39. TORSIONAL OSCILLATION TESTS ON B.60 No.4. (Wraith Spring Drive). This test was carried out to discover the effect of the Wraith spring drive on the vibrations of the B.60… | ||
| scan0089 | Graph comparing engine vibration amplitude against RPM for different spring drive and damper configurations. | ||
| View original record | B 60 WITH WRAITH SPRING DRIVE SET AT 19 LBS AT 17 1/2" WRAITH III WITH WRAITH SPRING DRIVE SET AT 15 LBS AT 17 1/2" B 60 WITH B 60 DAMPER SET AT 219 LBS FT/DEGREE AMPLITUDE DEGREES ENGINE R.P.M. JRS.… | ||
| scan0090 | Secret report on tests of a high-power cast iron engine unit and its performance compared to the standard Wraith. | ||
| View original record | 10HH, 600C + 1320. SECRET. Sg. from Rm. Hs. c. Hy. c. Sn. c. RHC. c. HX. c. HFS. c. Sw/Ev. c. Ds/Jnr. Rm14/R.28.4.39. Cast Iron High Power Engine Unit. A further series of tests on the high power cast… | ||
| scan0091 | Performance tests for cars 28.G.VI & 29.G.VI at Brooklands, comparing different carburettor and exhaust configurations. | ||
| View original record | RE/EYM.3/ER.29.4.39. 28.G.VI & 29.G.VI. AT BROOKLANDS. Further to our report Rm/wym.10/JB.25.4.39 re tests on Brooklands, we again ran 29.G.VI on the track on Wednesday last. The cast iron high power… | ||
| scan0092 | Report comparing oil temperatures over consecutive laps for different car configurations, including sheet metal and aluminium bottom halves. | ||
| View original record | -2- RM/RYM.3/PH.29.4.29. 29.G.VI. car with cast iron unit fitted with Twin S.U. carbs. has a 6.8 secs. gain from 10-70 M.P.H. over the standard car 28.G.VI. - both cars same weight. Oil temperature… | ||
| scan0093 | The durability of a Cast Iron engine unit after 4,300 miles of road and track testing, including at Brooklands. | ||
| View original record | -3- RM/Sym. 3/MH.29.4.39. standard engine and the Cast Iron engine. This particular Cast Iron engine unit in 29.G.Vl. car, B.60 No.2, has now run 4,300 miles on the road, including 60 laps of full… | ||
| scan0094 | Preliminary road test results for a 30.G.VII vehicle fitted with an 8-cylinder high power engine. | ||
| View original record | Secret 10HH . 666 Sg. from Hm. c. Hy. c. Da. c. HHC. c. SX. c. RFS. c. Da. c. Ev. c. Da/Jnr. Hm15/R.28.4.39. 8-cylinder High Power Unit. 30.G.VII fitted with the 8-cylinder high power engine was given… | ||
| scan0095 | Trial of a car with an 8-Cylinder High Power Unit and arranging a future chassis meeting. | ||
| View original record | SECRET. 1044 To Rm. from Sg. Copy to Hs.Ev.Da. RHC.Mx.HPS.Da.Ev. Da/Jmr. 8-Cylinder High Power Unit. Sg17/E1539 Thanks for Rm15/R.28.4.39. This, as you say, certainly sounds very encouraging. Please… | ||
| scan0096 | Modifications to the specifications for B.60 and B.80 engine units. | ||
| View original record | 1044 To HPS. from Rm/Swdl. Rm/Swdl.10/MH.2.5.39. B.60 & B.80 UNITS. Will you please include the following modifications in the specification for B.80 Nos. 5 and 6. (1) Modified distributor spring… | ||
| scan0097 | Confirming that instructions for detailing work on the Aluminium Straight 8 Engine have not yet been passed on. | ||
| View original record | 10HH? Rm/Swdl c. Rm. DA.5/G.3.5.39. ALUMINIUM STRAIGHT 8 ENGINE. Referring to Rm.10/R/21.2.39. we instructed the work referred to in DA.5/G/22/2.39. to BY/NS., c. Rm. but the instruction has not yet… | ||
| scan0098 | Comparative water temperature tests between two Wraith cars, one fitted with a cast iron engine. | ||
| View original record | 10HH o 600C. +b00. To By. c. to Hs. c. to Ds. c. to Da/JNR. Rm/Wym.9/JH.3.5.39. Wraith car 29.G.VI. Cast Iron Engine Unit B.60 No.2. We have just run comparative water temperature tests on Six Hills… | ||
| scan0099 | Requesting schemes and detail drawings for new 8-cylinder engine units. | ||
| View original record | IOHH To By. from Rm/Swdl. c. Da. c. By/NS. Rm/Swdl.5/MH.4.5.39. 8-CYLINDER UNITS. Will you please instruct for the necessary schemes and detail drawings to produce the following units. (1) Using… | ||
| scan0100 | The design of the induction system for the Bentley 60, featuring 1.750' S.U. carburetters. | ||
| View original record | 1044 BY/NS c. Rm. c. Rm/Swdl. c. Rm/CTS. DA.6/G.5.5.39. BENTLEY 60. INDUCTION SYSTEM ETC. FOR 1.750" S.U. CARBURETTER. Please receive herewith :- E.CD.1258 (2 sheets) Induction System, Twin 1.750"… | ||
| scan0101 | The shortened front end of the frame for a B.60 Engine, Silver Ripple II. | ||
| View original record | 1044 + 1022 To Da. from Da/DB. c. Da/JD. Da/Ev. c. Rm/AFM. Rm/PJH. Da/DB.19/N.10.5.39. Shortened Front End of Frame for B.60 Engine, Silver Ripple II. ---------- PD.432 ( 2 sheets) attached to Da's… | ||
| scan0102 | List of Parts (LOP) for the Bentley B.80 engine inlet pipe section. | ||
| View original record | 1 of 4 To By/W.S. from HPS/WSC. Rm. Rm/Swdl. HPS/WSC.1/BA.12.5.39. Bentley 80 Inlet Pipes. We are now producing Inlet Pipes to ECD.1298 for which we have received details for the Pipes. We have no… | ||
| scan0103 | The cancellation of a mock-up design (PD.429) for the B.60 slipper spring drive in favour of a new scheme. | ||
| View original record | 1044 To Ds. From Rm/Swdl. c. Da/Jnr. c. By/NS. c. HPS/RH. c. By/CS. Rm/Swdl.4/MH.12.5.39. B.60. We do not wish to proceed with the scheme PD.429 which is a "mock up" design to enclose the wraith type… | ||
| scan0104 | Modifications to a B.60 cylinder head following completed tests. | ||
| View original record | 1044 y To HPS. from Rm/Swdl. c. HPS/RH. Rm/Swdl.3/MH.13.5.39. B.60 CYLINDER HEAD. We have completed the tests on the intermediate stage cylinder head Exs.1383 and would like this now to be modified to… | ||
| scan0105 | The conversion and modification of the B.60 crankcase pattern. | ||
| View original record | 1044 Rm To. Mr. Barker (Pattern-Shop) c. Mr. Veasey. c. Mr. Thompson. c. Rm/Sw/1. HPS/WSC.7/BA.15.5.39. B.60 Crankcase. We understand that you are now converting the B.80 Crankcase pattern to the… | ||
| scan0106 | Drawings for the Exhaust Manifold and Downtake, and a desire to proceed with testing. | ||
| View original record | BY/HS. c. Rm. 10HH DA.7/G.16.5.39. B.80. EXHAUST SYSTEM. E.CD.1053 and E.CD.1063, respectively, Exhaust Manifold and Downtake. These drawings were issued with DA.12/G. 9.12.38. for filing only, unless… | ||
| scan0107 | Valve spring failures and modifications for B.60 and B.80 engines. | ||
| View original record | 1044 To By. from Rm/Swdl. c. Da/Jnr. c. By/CS. Rm/Swdl.4/MH.16.5.39. B.60 & B.80 VALVE SPRINGS. We have had to resort to the use of Ph.III double valve springs on the inlet valves of the above units… | ||
| scan0108 | B.60 engine's Wraith damper, spring drive, and a single belt drive experiment. | ||
| View original record | 10HH BY/NS c. Rm. DA.8/G.16.5.39. B.60 ENGINE - WRAITH DAMPER AND SPRING DRIVE. PD.429 which was temporarily stopped, will now be required for the crankcase and timing gear on the single belt drive… | ||
| scan0109 | Urgent request to complete one of four B.60 crankshafts to a specific drawing to suit a harmonic damper. | ||
| View original record | JOHN URGENT. To HPS. from Rm/Swdl. c. HPS/RH. Rm/Swdl.4/MH.17.5.39. B.60 CRANKSHAFT. specification In our memo Rm/Swdl.7/MH.29.3.39 we requested that 4 cranks should be put in hand to EB.4085 (2.75… | ||
| scan0110 | Specification for six experimental Bentley 80 block and crank cases from the Iron Foundry, detailing their material compositions. | ||
| View original record | 1044 Rm. c.HPS. c.HPS/RH. c.Rm/SWL. c.Rm/CMS. RHC/Vs.5/EP.18.5.39. Iron Foundry. Herewith specification and Block numbers of the six Bentley 80 Block and Crank cases produced by the Iron Foundry for… | ||
| scan0111 | Responding to queries about the 8-cylinder engine, detailing patterns and castings. | ||
| View original record | 10HH COPY FOR FILES. To Rm. from Rm/Swdl. Typed, 18.5.39. Re your queries on 8-cyl. engine. (1) Conventional pattern has been made to suit either high power or Conventional head. (No high power top… | ||
| scan0112 | Specification memo for the flywheel and clutch of the Conventional 'S' No.1 Unit. | ||
| View original record | 1044 To HPS. c. to HPS/RH. c. to Rm/CT. B. to Rm/Swdl. c. to By/CS. Rm/WRC.1/JH.18.5.39. CONVENTIONAL 'S' No.1. UNIT. The flywheel should be to drawing Rm.573 and the clutch 11" long with red springs.… | ||
| scan0113 | Summary report on the strip examination of a B.80 No.3 Unit engine following an endurance test. | ||
| View original record | 1044 To Rm. from HPS/RH. c. By. c. Rm/Swdl. c. HPS. HPS/RH.1/BA.20.5.39. B.80 No.3 Unit. Herewith summary of strip examination of the above unit to Rm/Swdl.6/MH.15.5.39. Engine has run 105 hours 45… | ||
| scan0114 | Inspection report detailing the condition of various engine components and their associated measurements. | ||
| View original record | -2- HPS/RH.1/BA.20.5.39. Pistons LOP.EB.4318. Pistons chalk tested - free from cracks - Measurements including ring side clearances taken and recorded. Maximum ring side clearances taken .0015".… | ||
| scan0115 | Photographic record of B.80 No.3 Unit big end bearings after endurance testing. | ||
| View original record | B.80 NO.3 UNIT. BIG END BEARINGS. A.C.9 STANDARD. RUNNING TIMES: Part Throttle 57 hrs. 30 mins., Full Throttle 48 hrs. 15 mins, - TOTAL 105 hrs. 45 mins. Including 50 hours endurance, made up as… | ||
| scan0116 | Engine main bearings laid out for inspection following a 105-hour endurance test. | ||
| View original record | B.50 NO.3 UNIT. MAIN BEARINGS. Vandervell strip Babbitt. 2.75 journal crank - 2.902 housing. RUNNING TIMES: Part Throttle 57 hrs. 30 mins., Full Throttle 48 hrs. 15 mins. TOTAL 105 hrs. 45 mins.… | ||
| scan0117 | Test report detailing the dimensional measurements of main bearings and a crankshaft before and after a 50-hour test run. | ||
| View original record | B 80 UNIT N° 3 PASSED TO TEST:- COMPLETED TEST:- RUNNING TIME:- 50 HRS. MILEAGE:- MAIN BEARINGS DIMENSIONS. [Diagram of a bearing with A-A and B-B axes] [Diagram of a bearing cross-section with 'A'… | ||
| scan0118 | Cylinder bore dimension measurements before and after a 50-hour test for unit B.80 No. 3. | ||
| View original record | B. 80. UNIT Nọ 3 CYLINDER BORE DIMENSIONS CYLINDERS:- F.B. 3590 Matl:- Y/C PASSED TO TEST:- COMPLETED TEST:- RUNNING TIME :- 50 HRS. MILEAGE :- MEASUREMENTS AT CROWN REPRESENT MAX: WEAR AT TOP OF… | ||
| scan0119 | Test report detailing connecting rod bearing and crankpin dimension measurements for a B80 Unit Nº 3 after a 50 hour run. | ||
| View original record | B 80 UNIT Nº 3. PASSED TO TEST:- COMPLETED TEST:- RUNNING TIME :- 50 HRS. MILEAGE :- CONN: ROD BEARINGS & CRANKPIN DIMENSIONS. CRANKSHAFT :- EX. 33947 CON: ROD BEARINGS:- MATL :- 4% CARB MATL :- TEST… | ||
| scan0120 | Piston profile measurements for unit B.80 Nº3, identification M.30, before and after a 50-hour running test on Aerolite tin coated EB.3916 pistons. | ||
| View original record | Unit Nº B.80 Nº3. PISTON PROFILES. PASSED TO TEST: COMPLETED TEST: RUNNING TIME: 50 HRS. MILEAGE: Pistons: EB.3916. AEROLITE TIN COATED. IDENTIFICATION Nº M.30 TABLE DATA: PISTON Nº | POSITION |… | ||
| scan0121 | Test report on valve dimensions for a B.80 unit after a 50-hour engine run. | ||
| View original record | B. 80 UNIT N°3 VALVE DIMENSIONS. PASSED TO TEST:- COMPLETED TEST:- RUNNING TIME:- 50 HRS MILEAGE:- CYLINDER HEAD:- E.B.4098 INLET VALVES:- E.B. 3853 EXHAUST VALVES:- E.B. 3854. LENGTH 1.000" Dia "A"… | ||
| scan0122 | New drawings and part changes for the Bentley 80 Engine. | ||
| View original record | To. HFS. c.c. EY c.c. PHC/Wld. c. Rm/Swdl. o. Joy/Westcott/BH 10NN BY/CS1/EH.22.5.39. Re Bentley 80 Engine. Crankcase & Bearings - Section 5000. Piston - Section 5040. PD.308 - Dry Liner Alum.… | ||
| scan0123 | Experimental modifications for an 8-cylinder engine. | ||
| View original record | BY/CS1/EH.22.5.39 cont'd. (2) Section 5040. Piston and Fittings to LOP. EW.2178, instructed in sufficient quantity for 8 Cylinder. The above parts have been instructed for use with the Conventional… | ||
| scan0124 | The B.80 No.3 Unit 50-hour endurance test, including its detailed specification. | ||
| View original record | 1044 To By. from Rm/Swdl. c. Hs. c. Da. c. Mx. c. RHC. c. HPS. c. Da/Jnr. Rm/Swdl.12/ER.22.5.39. B.80 ENDURANCE (No.3 UNIT). We have recently completed the first 50 hr. endurance test on the above… | ||
| scan0125 | Endurance test conditions specifying timings, RPM, loads, fuel, and oil parameters. | ||
| View original record | -2- Conditions. The conditions under which the endurance was carried out are as follows. 1st. 18 hrs. Each hour (a) 15 mins. at 3000 r.p.m. 15 mins. at 3500 r.p.m. 30 mins. at 4000 r.p.m. Each 10… | ||
| scan0126 | Running record and consumption report for an engine test, detailing power output and fuel usage. | ||
| View original record | -3- Running Record. The power was maintained throughout the run as follows. 3000 r.p.m. - 148.5 BHP. - 113.7 MEP lbs/sq.in. 3500 " - 161 " - 102.0 " " 4000 " - 167 " - 95.3 " " 4250 " - 163 " - 87.9 "… | ||
| scan0127 | Valve tappet clearance and crankshaft damper failures and testing. | ||
| View original record | -4- Valve Tappet Clearance. Running with sodium filled exhaust valves and "Brichrome" inserted seats, the clearance maintained throughout the run with only a maximum variation of .002. On the O we… | ||
| scan0128 | Engine component endurance tests, covering the crankshaft damper, valve springs, dynamo, belt drive, and electrical system. | ||
| View original record | -5- (1) Crankshaft Damper - Cont'd. When complete, a report will be given on the various dampers now being tested. We give, however, the above figures as a matter of interest in respect of the… | ||
| scan0129 | Inspection report on the general condition of engine parts after a period of running. | ||
| View original record | -6- Rm/Swdl.12/RH.22.5.39. Inspection. A complete detailed report is being given by HPS/RH. but we give herewith several points on the general condition of the parts. Main bearings which are… | ||
| scan0130 | The 50-hour bench endurance run of an 8-cylinder engine. | ||
| View original record | 1044 SECRET. Sg. from Rm. Hs. c. By. Rm2/R.23.5.39. 8-cylinder Engine. We have now completed a preliminary bench endurance run of 50 hours on the 8-cylinder engine. The unit had already done 55 hours… | ||
| scan0131 | Requesting the completion of detailing and production of two Studebaker dampers for the B.80 unit, as the original cannot be sourced. | ||
| View original record | 1044 URGENT. To By/Ald. from Rm/Swdl. c. HPS. c. HPS/RH. Rm/Swdl.5/MH.24.5.39. STUDEBAKER DAMPER FOR B.80 UNIT. This memo to confirm our verbal request for you to complete the detailing of the… | ||
| scan0132 | Specifications for belt and pulley angles on B.60 and B.80 engines. | ||
| View original record | 10HH + 1135 To By/CS. Rm/Ed.17/JH.25.5.39. B.60 & B.80 Pulleys. We have been over the belt and pulley angles on the above engines, and find that these should be as under, dimensions being taken from… | ||
| scan0133 | Specifications and a request for the production of two sets of dynamo pulleys. | ||
| View original record | -2- Rm/Ed.17/JH.25.5.39. Dynamo. 3.75" diam. Pulley angle 26°, top width .625". Depth .450". We should be glad if you would draw out 2 sets of pulleys to the above dimensions, one set to be in the… | ||
| scan0134 | Instruction memo regarding a stud for the rocker cover on a Bentley 60 Chassis High Power Head. | ||
| View original record | To: HFS. [crossed out] c. PT. [crossed out] c. RHO/W.Id. [crossed out] c. Rm/Swdl. [crossed out] c. Roy/HSS for HFS. [Roy/HSS is crossed out] File 1044 [Handwritten] BY/CS2/EH.31.5.39. Re Bentley 60… | ||
| scan0135 | Blueprints for a Bentley 60 Chassis cylinder head. | ||
| View original record | 10HH MDO. c. Rm. ~~or/Rm/Swdl.~~ By/Ald.1/AW.1.6.39. BENTLEY 60 CHASSIS. CYLINDER - SECTION 5050. Rm Please receive herewith 2 blue prints of the following:- EXS.1758. Cylinder Head. - - - 1 off. The… | ||
| scan0136 | Parts list and blueprint request for a Bentley 60 chassis water pump. | ||
| View original record | 1044 WHS: c. Rm. [text struck through] By/Ald.1/AW.2.6.39. BENTLEY 60 CHASSIS. WATER PUMP - SECTION 6160. Please receive herewith two blueprints of each of the following, and where a pattern is… | ||
| scan0137 | The modification of a B.60 cylinder head by machining away the turbulent lip. | ||
| View original record | 10HH To HPS. from Rm/Swdl. c. HPS/RH. Rm/Swdl.2/MH.5.6.39. B.60 CYLINDER HEAD. In accordance with the memo By/Ald.1/AW. 1.6.39, will you please modify the cylinder head EXS.1384 to EXS.1758, whereby… | ||
| scan0138 | Scheme for variable pitch fan pulleys to reduce excessive fan noise on W.80 and B.80 engines. | ||
| View original record | 1044 + 1135 To By/Ald. Rm/Ed.1/JH.6.6.39. Variable pitch fan pulleys. In view of the excessive fan noise experienced on W.80, we feel that a scheme for a variable pitch fan pulley might be helpful. We… | ||
| scan0139 | Parts and requesting prints for a modified crankcase breather pipe for the Bentley 60 test car. | ||
| View original record | 104H HPS. c. Rm. c. Rm/Swdl. By/Ald.2/AW.6.6.39. BENTLEY 60. (15,000 Miles Test Car) Section 5082 - Air Silencer. Section 5201 - Oil Filler. Please receive herewith two prints of the following:-… | ||
| scan0140 | Instructions to correct a mistake regarding the detailing of the Alum 80 engine, with new guidance on crankcase patterns and cylinder heads. | ||
| View original record | 10HH To By. from Rm/Swdl. c.c. DA. c.c. HFS. c.c. Sft/hw. c.c. By/HS. c.c. By/CS. c.c. DA/Jnr. c. HFS/LH. Rm/Swdl.8/NH.6.6.39. ALUM 80 ENGINE. By a mistake in our original instructions Rm/Swdl.… | ||
| scan0141 | Technical notes regarding cylinder head tests, camshaft bearings, and standard pistons for an Alum engine. | ||
| View original record | -2- Rm/Swdl.8/MH.6.6.39. (5) Regarding the cylinder head, tests are being carried out to determine whether the new head FD.368, is an advantage over the original high power head as tried on the B.60.… | ||
| scan0142 | Increase in oil pressure for B.60 & B.80 models by modifying the main oil pressure spring. | ||
| View original record | 10HH To By/CS. from Rm/Swdl. Rm/Swdl.4/MH.7.6.39. B.60 & B.80 OIL PRESSURE. The existing main oil pressure spring gives an oil pressure of 30 lbs/sq.in. and to be on the safe side require this… | ||
| scan0143 | Request to design an adaption for a Cadillac-type bonded rubber damper for the B.80 engine. | ||
| View original record | URGENT. 104H To By/Ald. from Rm/Swdl. Rm/Swdl.6/MH.7.6.39. We should like you to scheme out an adaption for the Cadillac type of bonded rubber damper on the B.80 engine. The damper, which we hand you… | ||
| scan0144 | Required work for an 'Unconventional' Aluminium 8 Cylinder Engine with a 3.250 bore. | ||
| View original record | 10th To BY. O. Rm. O. Da. c.c. Ba/JNR. c.c. Da/MOS. c. Rm/Swdl. BY/CSl/EH.9.6.39. Re Aluminium 8 Cylinder Engine 3.250 Bore Unconventional. With reference to memo' Rm/Swdl.S/MH.6.6.39, the following… | ||
| scan0145 | Instructions for a modification to a cylinder head for a Bentley 60 Chassis. | ||
| View original record | 10HH HBS. c. Rm. cy Rm/Swdl. By/Ald.1/AW.12.6.39. BENTLEY 60 CHASSIS. Cylinder - Section 5050. Please receive herewith 2 blue prints of the following:- EXS.1769. Modification to Cylinder Head. - 1… | ||
| scan0146 | Request to produce two induction pipes with a 1.500 inch diameter bore for the B.80 induction system. | ||
| View original record | 10HH To HPS. from Rm/CTS. Rm/CTS.5/MH.12.6.39. INDUCTION SYSTEM - B.80. Will you please produce two induction pipes from the existing patterns (by using sheet lead) to have a main bore of 1.500 dia.… | ||
| scan0147 | Request to redesign the water pump for B.60 and B.80 engines to incorporate a fan drive and heater connections. | ||
| View original record | 1044 +1269 To By/Ald. Rm/Ed.2/JH.12.6.39. B.60 and B.80 Water Pumps. It has been suggested that the fan drive be mounted on the end of the water pump on B.60 engine, utilising a similar belt… | ||
| scan0148 | Request for parts to build a test rig for a Bentley B.80 triangle belt drive. | ||
| View original record | FL 10HH To HPS. c. to HPS/RH. Rm/Ed.1/JH.12.6.39. Bentley 80 Pulley Rig. We are anxious to make a rig for testing B.80 triangle belt drives, and for this we shall require a B.80 water pump, a… | ||
| scan0149 | The supply of a dynamo and pulleys for a Bentley 80 Pulley rig and for belt testing by Messrs. Ferodo. | ||
| View original record | 1044 To HPS. c. to HPS/RH. Rm/Ed.15/JH.14.6.39. Bentley 80 Pulley rig. Further to memo. Rm/Ed.1/JH.12.6.39. we should be glad if you would supply a dynamo for this job as the Lucas machine originally… | ||
| scan0150 | Failure report concerning a No.1 Inlet Rocker, part number EB.4731. | ||
| View original record | 1044 To [redacted] from HPS/RH. c. Rm. c. [redacted] c. [redacted] HPS/RH.20/BA.14.6.39. Valves and Fittings (B.80.No.2 Unit) Failure of No.1 Inlet Rocker EB.4731. Failure occurred on 24.5.39 after 46… | ||
| scan0152 | Design considerations for exhaust valve seats and guides for an 8-cylinder engine. | ||
| View original record | 1044 To By. from Rm/Swdl. Rm/Swdl.1/MH.14.6.39. ALUM 8-CYLINDER HIGH POWER 3.25 BORE. Replying to the queries raised in By/CS.1/EH.9.6.39. Item (3) - Exhaust valve seats. Consider that press-in seats… | ||
| scan0153 | Request for blueprints and a list of required parts for the Bentley 80 Chassis crankshaft damper. | ||
| View original record | 1044 HES. c. Rm. c.c. Rm/Sw.gl. By/Ald.2/AW.14.6.39. BENTLEY 80 CHASSIS. CRANKSHAFT DAMPER - SECTION 5C2C. Please receive herewith two blueprints of each of the following:- SCD.1176. Studebaker Type… | ||
| scan0154 | Request to manufacture two core plugs with pressure tubes for a B.60 head and block. | ||
| View original record | 1044 To HPS. c. to HPS/RH. Rm/Ed.14/JH.14.6.39. B.60 Coolant pressure. Will you please make up two core plugs to fit in the rear of a B.60 head and block, fitted with a pressure tube as shown on… | ||
| scan0155 | Distortion test conducted on a Bentley 60 clutch casing. | ||
| View original record | 1044 To RM/Gry from HPS/Bl. BENTLEY 60 CLUTCH CASING DISTORTION TEST. GB.4333. In order to produce the deflection of the clutch casing suspected on the engine, the A/Dc casing was attached (inverted)… | ||
| scan0156 | Blueprint diagram showing stiffening webs welded onto a Bentley 6D clutch casing. | ||
| View original record | 15-6-39 BENTLEY 6D CLUTCH CASING DEFLECTION GB 4333 MATERIAL A/DC DIAGRAM OF STIFFENING WEBS WELDED ONTO CASING SIDE WEB 'Z' SIMILAR TO 2 OTHER WEBS STARTER WEB 'Y' 1/2" WIDE x 1" HIGH MODIFIED… | ||
| scan0157 | Test report on the deflection of a Bentley 60 clutch casing under a 500lb load. | ||
| View original record | BENTLEY 60 CLUTCH CASING DEFLECTION GB 4333 MATERIAL A/DC 500 LB LOAD ATTACHED TO ENGINE SUPPORT ON MAGNESIUM GEARBOX CASING * -> INDICATES CLOCK & ATTACHMENT, X BEING THE FIXED END FIXED PLATE ARROWS… | ||
| scan0158 | Diagram illustrating stiffening webs welded onto a Bentley 60 clutch casing to correct deflection. | ||
| View original record | 15-6-39 BENTLEY 60 CLUTCH CASING DEFLECTION GB 4333 MATERIAL A/DC DIAGRAM OF STIFFENING WEBS WELDED ONTO CASING SIDE WEB 'Z' SIMILAR TO 2 OTHER WEBS MODIFIED FILLETS STARTER WEB 'Y' 1/2" WIDE x 1"… | ||
| scan0159 | Deflection test report for a Bentley 60 clutch casing under a 500 LB load. | ||
| View original record | BENTLEY 60 CLUTCH CASING DEFLECTION GB 4333 MATERIAL A/DC 500 LB LOAD ATTACHED TO ENGINE SUPPORT ON MAGNESIUM GEARBOX CASING X • INDICATES CLOCK & ATTACHMENT, X BEING THE FIXED END FIXED PLATE ARROWS… | ||
| scan0160 | Request to design softer front springs for W.80 and B.80 models, including weight and load specifications. | ||
| View original record | 10/HH 66 / 1306 To Da/DB. from Rm/AFM. c. By/HEB. Rm/AFM.1/MH.16.6.39. SOFTER FRONT SPRINGS - W.80 & B.80. Will you please design springs of 8 1/2" effective deflection for W.80 and B.80, when laden.… | ||
| scan0161 | The detailing and ordering of springs. | ||
| View original record | -2- Rm/AFM.1/MH.16.6.39. Will By/HEB. see that the springs are detailed when drawn and that one pair for each type is ordered as quickly as possible. Rm/AFM. | ||
| scan0162 | Design modification to an induction manifold with a cast-in starter passage. | ||
| View original record | BY/MS. c. Rm. c. Rm/CTS. c. Rm/GR. IOHH [handwritten] DA.2/G.17.6.39. File [handwritten] WYMAN [handwritten signature] B.60 - INDUCTION MANIFOLD WITH CAST-IN STARTER PASSAGE. Please receive herewith… | ||
| scan0163 | Experimental lighter rear suspension for a 6-cylinder C.I. engine. | ||
| View original record | BY/MS. c. Rm. 104H File DA.3/G.19.6.39. 6 CYL. C.I. ENGINE. ENGINE REAR SUSPENSION. Please receive G.CD.1417, which has been done at Experimental Department's request to provide a lighter and simpler… | ||
| scan0164 | Increase in the number of instruction sets for the Bentley 80 chassis crankshaft damper. | ||
| View original record | IOHH c. Rm. og/swdl. By/Ald.3/AW.20.6.39. BENTLEY 80 CHASSIS CRANKSHAFT DAMPER - SECTION 5020. Rm Further to our memo By/Ald.2/AW.14.6.39 and in accordance with Rm/Swdl.5/MH.24.5.39, will you kindly… | ||
| scan0165 | Clarifying the urgent parts required for the B.80 Water Pump Rig. | ||
| View original record | 10HH To HPS. c.c. to HPS/RH. Rm/Ed.2/JH.23.6.39. B.80 Water Pump Rig. There may have been some confusion about previous notes on this job and we should like to clarify the position. We require the… | ||
| scan0166 | Weight analysis summary and performance details for an 8-cylinder engine. | ||
| View original record | 1044 Wd. from Rm. Rm3/R.23.6.39. Herewith three photographs of the 8-cylinder engine, together with a weight analysis summary of the various sections. The photograph of the complete engine is… | ||
| scan0167 | Power curve graph for the B.80 8-cylinder engine with open exhaust, plotting BHP, Torque, and MEP against RPM. | ||
| View original record | B.80 UNIT POWER (OPEN EXHAUST) 8 CYLINDER UNIT 3.5" BORE 4.5" STROKE - 5 2/3 LITRES COMPRESSION RATIO = 6.25:1 WEIGHT COMPLETE = 892 LBS. CLUTCH, CASE, FAN & EXHAUST MANIFOLDS Graph Labels: B.H.P… | ||
| scan0168 | Request to place an official order for an experimental belt from Ferodo Ltd. | ||
| View original record | To Roy. c. to G/JWH. Rm/Ed.5/JH.24.6.39. B.80 Belt(O/N.52439) Will you please pass an official order to Messrs. Ferodo Ltd. for one belt ordered over the telephone by Rm/Ed. This is an experimental… | ||
| scan0169 | Requesting blueprints for a crankshaft damper and pulley for a Bentley 80 chassis. | ||
| View original record | 10HH [Strikethrough text] c. Rm. [Strikethrough text] By/Ald.2/AW.27.6.39. BENTLEY 80 CHASSIS. C'SHAFT DAMPER. - SECTION 5020. Please receive herewith two blueprints of each of the following:-… | ||
| scan0170 | Analysis of unvapourised fuel surging in the Induction System B.80 No.5 Unit at low speeds. | ||
| View original record | 10HH. v 1036. To By. c. to Da. c. to Da/Jnr. c. to By/Ald. c. to Da/Mc. Rm/CTS.14/JH.28.6.39. Induction System B.80 No.5. Unit. Carburetter. Stromberg type AA.25 (Throttle 1.437). Induction pipe.… | ||
| scan0171 | Improving heat transfer to induction pipes and modifications to manifolds and carburetors. | ||
| View original record | -2- We require as much heat on the pipe as possible at low speeds. It has been said that our water heated hot spots are a draw back in this respect, but in our experience the available heat either… | ||
| scan0172 | The production of 6 and 8 cylinder engine castings and a new induction pipe design for a B.80 engine. | ||
| View original record | -3- Rm/CTS.14/JH.28.6.39. In the meantime, castings of both types (6 cyl. and 8 cyl.) are being produced to the existing design, but with a main bore of 1.500 so that we can get a figure for max.… | ||
| scan0173 | Design changes for strengthened front engine support feet for the B.80 and C.I. Conventional 8. | ||
| View original record | EX/NS. c. Rm. c. Rm/TD. 10HH DA.11/G.28.6.39. FILED B.80 and C.I. CONVENTIONAL 8 - FRONT ENGINE SUPPORT FEET. Please receive herewith :- E.CD.1430 Strengthened Front Engine Support Feet - B.80 and… | ||
| scan0174 | The test bed running and specifications for B.80 Unit No. 5 after a 30,000-mile test. | ||
| View original record | 1044 + 666 To By. from Rm/Swdl. c. Da. c. Da/Jnr. c. Da/McS. Rm/Swdl.2/MH.29.6.39. B.80 UNIT NO.5 FOR 30,000 MILES. (30.G.VII). Given herewith is a report of the test bed running of the above unit,… | ||
| scan0175 | Engine power output, detonations, and oil consumption with 'Blow By' analysis. | ||
| View original record | -2- POWER. As shown on the attached curve (S.94) the maximum open exhaust power and MEP is 170 BHP at 3750 R.P.M. and 130 lbs/sq.in. MEP at 2000 R.P.M. respectively. With the Buick type of exhaust… | ||
| scan0176 | Valve bounce tests comparing Ph.III and EB.4678/9 springs and proposing alternatives. | ||
| View original record | -3- VALVE BOUNCE. The tests were commenced with 4 inlet valves having the adapted Ph.III double springs and the remaining four with Swedish wire double springs (EB.4678/9) which have anti-surge close… | ||
| scan0177 | Engine valve bounce, induction system, and slow running performance issues. | ||
| View original record | -4- VALVE BOUNCE - Cont'd. Incidentally, the actual closed position length of the EB.4678/9 springs is 1.615 as against 1.575 stipulated on the spring drawing. In consequence of the EB.4678/9 being… | ||
| scan0178 | The performance and investigation of timing gears, dampers, and camshafts. | ||
| View original record | -5- TIMING GEARS & DAMPER. The timing gears without exception have on all the B.60 and B.80 units been free from both rattle and whine and no attention has been necessary. No crankshaft periods could… | ||
| scan0179 | Issues and solutions for various engine leaks and joints. | ||
| View original record | -6- Rm/Swdl.2/MH.29.6.39. LEAKS & JOINTS ETC. Invariably water leaks occur past the rocker shaft holding down studs, the holes for which are drilled through into the cylinder head water space. The… | ||
| scan0180 | Exhaust manifold failures and the condition of stripped engine components, including bearings. | ||
| View original record | -7- EXHAUST MANIFOLDS. We have always had trouble with exhaust manifold failure on the test beds, but the B.80 and B.60 fail much quicker than any previous unit. There are several ways we could… | ||
| scan0181 | Graph of power comparisons on a B80 N°5 unit engine after 30,000 miles, testing an open exhaust against a Buick silencer. | ||
| View original record | POWER COMPARISONS ON B80 N°5 UNIT. (30,000 MILES) S.94 CONDITIONS: VALVE TIMING .030 CLCE. IO 11° PTDC EO 40° BBDC EB.4512 CAMSHAFT. IC 30° PBDC EC 1° BTDC ORIGINAL TYPE CYL HEAD EB 4098 - 6.25:1… | ||
| scan0183 | Specifications for the construction and testing of a Wraith 80 bump chassis. | ||
| View original record | 104H & 102H To HPS. from Rm/AFM. Rm/AFM.4/MH.30.6.39. WRAITH 80 BUMP CHASSIS. The long frame recently delivered to the Experimental Department is to be built into a bump chassis. The usual bump… | ||
| scan0184 | Confirming a request for crankshaft torsional diagrams to be taken from an 8-cylinder chassis engine. | ||
| View original record | 1942 To Lr/MR. SHAW. from Rm/Swdl. Rm/Swdl.10/MH.3.7.39. This memo to confirm our request that you will take some crankshaft torsional diagrams on our 8-cylinder chassis engine by means of the Sperry… | ||
| scan0185 | The failure of the B.80 No.1 Unit's water pump bearing, spindle, and assembly, part number EB.4206. | ||
| View original record | To Rm. from HPS/RH. c. Rm/Ed. c. HPS. Handwritten notes: Top: Ed, 10HH, What can be done about this, Guy Right side: File Ed B.80 NO.1 UNIT. Failure of Water Pump Bearing, Spindle and Assembly -… | ||
| scan0186 | Photograph of a disassembled bearing assembly. | ||
| View original record | ", | ||
| scan0187 | The arrangement of petrol feed, drain pipes, and a water return pipe for the B.80 engine. | ||
| View original record | BY/NS. c. Rm. a. Rm/GR. c. CES. c. Rm/Swdl. IOHH DA.2/G.3.7.39. B.80 - PETROL FEED AND DRAIN PIPES, WATER RETURN PIPE FROM HOT SPOT. Please receive herewith :- E.CD.1432 } Petrol Feed and Drain Pipes… | ||
| scan0188 | Test report on the B.80 engine, No. 5 unit, detailing modifications to resolve issues found during testing. | ||
| View original record | |||
| scan0189 | The single belt B.60 engine in a 3.B.50 chassis, specifically the fan and top water connection. | ||
| View original record | 104H Rm. Da. 6/G.5-4-39. Single Belt B.60 Engine in Chassis 3.B.50. Fan and Top Water Connection File 800b. | ||
| scan0190 | The fitting of water pressure connections to a B.80 No.2 unit. | ||
| View original record | 1044 To HPS. c. to HPS/RH. Rm/Ed.6/JH.6.7.39. Water Pressure on B.80. Will you please fit up on B.80 No.2 unit the water pressure connections instructed in Rm/Ed.14/JH.14.6.39. One of these should be… | ||
| scan0191 | Requesting details for a stiffened front mounting plate for an experimental 8-cylinder unit. | ||
| View original record | 1044 γ To By/NS. from Rm/Swdl. c. HPS/RH. c. By/CS. Rm/Swdl.1/MH.6.7.39. "CONVENTIONAL" UNIT (8-CYL.) One of the above type of units is being made experimentally and in line with the modification… | ||
| scan0192 | Distortion test report on a Bentley 60 clutch casing. | ||
| View original record | 10HH To. Rm/Gry. from HPS/Bl. HPS/B1.1/IC.7.7.39. Bentley 60 Clutch Casing Distortion Test G.B.4333. Further to the tests reported HPS/Bl.1/JW.15.6.39., the cast iron casing which had been used for… | ||
| scan0193 | Request for blueprints regarding a modification to the cylinder head for a Bentley 60 Chassis. | ||
| View original record | 1044 c. Rm. ~~Gen. Day. Staff~~ By/Ald.1/AW.7.7.39. BENTLEY 60 CHASSIS. CYLINDER - SECTION 5050. Please receive herewith 2 blue prints of the following:- EXS.1804. Modification to Cylinder Head. The… | ||
| scan0194 | Removal, modification, and trial of B.60 cylinder heads. | ||
| View original record | 1044 To HPS. from Rm/Swdl. c. HPS/RH. Rm/Swdl.2/MH.7.7.39. B.60 CYLINDER HEADS. In order to keep your records up to date the Ex.1383/4 cylinder head has been removed from the test bed unit (No.3) and… | ||
| scan0195 | The B.80 and C.I. conventional S-crankshaft with finished forged webs. | ||
| View original record | Des [redacted] Rm/Swiles [redacted] c. Rm. 1044 BY.3/G.10.7.39. B.80 and C.I. CONVENTIONAL S - CRANKSHAFT WITH FINISHED FORGED WEBS. If the crankshaft/E.CD.1436 described in memo DA.1/G.1.7.39. is… | ||
| scan0196 | Modifications to sheet steel tappet covers for B.60 and B.80 engines. | ||
| View original record | BT/HS. c. Rm. on Rm/S 1044 DA.10/G.10.7.39. B.60 and B.80 - MODIFICATION TO SHEET STEEL TAPPET COVERS. Please receive herewith :- E.CD.1446 Modified Sheet Steel Tappet Covers. B.60 and B.80. In order… | ||
| scan0197 | Requesting the urgent despatch of a dynamo and pulleys to Messrs. Ferodo Ltd. for B.80 belt durability testing. | ||
| View original record | #36? 1044. To HPS. c. to HPS/RH. Rm/Ed.11/JH.10.7.39. Dynamo & Pulleys for Ferodo. Further to our memo. Rm/Ed.15/JH.14.6.39. we should be glad if you would despatch a dynamo and B.80 pulley, and also… | ||
| scan0198 | Development and testing of a pressure cooling system. | ||
| View original record | 18HH, 1280, 1269, 111H To By/Ald. Rm/Ed.8/JH.11.7.39. Pressure Cooling. As soon as the B.80 water pump with the Morgan Stuart gland is completed, we should be glad if you would proceed with this job.… | ||
| scan0199 | Drawing Office instructions for an 8-cylinder high-power aluminum engine unit. | ||
| View original record | 3 Special - 104H 2 Ordinary To Rm. from HPS/WSC. HPS/WSC.3/BA.11.7.39. 8 Cylinder High Power Alum Unit. We have now received complete D.O. instructions for the above new Unit in accordance with the… | ||
| scan0200 | The production of parts for a new 8-cylinder high power aluminum engine unit. | ||
| View original record | To HPS/WSC. from Rm. c. Rm/Swdl. 8-CYLINDER HIGH POWER ALUM UNIT. In reply to HPS/WSC.3/BA.11.7.39, will you please go through with 3 sets of the special pieces peculiar to the alum version of the 8… | ||
| scan0201 | Trial, redesign, and production of B.60 & B.80 valve springs. | ||
| View original record | 1044 To HPS. from Rm/Swdl. c. HPS/RH. Rm/Swdl.8/MH.12.7.39. B.60 & B.80 VALVE SPRINGS. Double springs in accordance with the memo By/CS. 1/EH.23.5.39 were tried on the inlet valves of B.80 No.5 unit… | ||
| scan0202 | Crankshaft torsiograph tests on Engine B.80 No.2. | ||
| View original record | 1116 1044 ? To - Rm. Copy to Mr.Spooner. Lr/HWS.4/JS.12.7.39. Re. Crankshaft Torsiograph Tests on Engine B.80 No.2. Two series of the above tests covering full throttle running from 1000 to 4400… | ||
| scan0203 | Parts list and instructions for the B.60 & B.80 Water Pump. | ||
| View original record | 1044 c. Rm. By/Ald.2/AW.14.7.39. B.60 & B.80. SECTION 5160 - WATER PUMP. Please receive herewith two prints of each of the following, and where a pattern is required extra prints have been sent.… | ||
| scan0204 | Confirming the order and delivery of various parts, including bearings, for B.60 Chassis PD.429 and PD.439. | ||
| View original record | -2- By/Ald.2/AW.14.7.39. Kindly note that the following parts have been ordered and delivered to Rm/Ed. EXS.1786. Washer. 1 off. EXS.1777. Carbon Joint Ring. 1 " Also please send official order to… | ||
| scan0205 | Requesting the modification of a Bentley 80 Water Pump to use plain Hoffman bearings. | ||
| View original record | 10HH & 1269 To HPS. c. to HPS/RH. Rm/Ed.4/JH.18.7.39. Bentley 80 Water Pump. Will you please modify the pump at present running on the rig to SOT.112 herewith. This scheme is intended to try out plain… | ||
| scan0206 | Instruction to machine .050' from the face of an EXS.1383 head, which is to be supplied by Rm/Wym. | ||
| View original record | 10HH + 800b. To HPS/RH. Rm/FP.7/JH.19.7.39. Please machine .050" from the face of EXS.1383 head. Head to be supplied by Rm/Wym. Rm/FP. B.60 engine in 3.B.50 chassis. | ||
| scan0207 | Blueprints for a trial of a Studebaker type crankshaft damper on a Bentley 60 chassis. | ||
| View original record | 1044 [Strikethrough text: o. Rm.] c. Rm. [Strikethrough text] By/Ald.1/AW.20.7.39. BENTLEY 60 CHASSIS. CRANKSHAFT DAMPER - SECTION 5020. Please receive herewith two blueprints of each of the… | ||
| scan0208 | Specification sheet for the 5.7 Litre Silver Dawn 80 Hs' Special vehicle. | ||
| View original record | ROLLS-ROYCE, LTD. STANDARDS 1044 24 JUL 1939 DERBY GRY Issued to:- ~~By.~~ ~~Da. (6 copies)~~ ~~Rm. (7 copies)~~ ~~RHC.(3 copies)~~ ~~HPS.~~ ~~D.E.F.G.Dept.~~ ~~Ald.~~ ~~Roy/Les.~~ ~~By/JW.~~… | ||
| scan0209 | Specification sheet detailing various engine components and their associated design and remark numbers. | ||
| View original record | SPECIFICATION. Specification No.SD.80/5 Sheet No. 2. Issue No. 1 Sec.No. | Title. | Description. | Design No. | Dtls. iss. LOP. No. | Remarks. --- | --- | --- | --- | --- | --- 5000 | Crankcase and… | ||
| scan0210 | Specification sheet detailing engine components and associated part numbers. | ||
| View original record | SPECIFICATION. Specification No. SD.80/5 Sheet No. 3 Issue No. 1 Sec.No. | Title. | Description. | Design No. | Dtls. iss. LOP. No. | Remarks. --- | --- | --- | --- | --- | --- 5070 | Inlet Pipes |… | ||
| scan0211 | Specification sheet detailing various car components, their design numbers, and remarks. | ||
| View original record | SPECIFICATION. Specification No. SD.80/5 Sheet No. 4 Issue No. 1 Sec.No. | TITLE | Description | Design No. | Dtls. iss. LOP. No. | Remarks. ---|---|---|---|---|--- 5204 | Oil Level Indicator. |… | ||
| scan0212 | Specification sheet detailing various automotive components, their design numbers, and remarks. | ||
| View original record | SPECIFICATION. Specification No. SD.80/5 Sheet No. 5 Issue No. 1. Sec. No. | Title. | Description. | Design No. | Dtls. iss. LOP. No. | Remarks. --- | --- | --- | --- | --- | --- 6030 | Gearbox & Act.… | ||
| scan0213 | Specification sheet No. 6, issue No. 1, detailing various vehicle components. | ||
| View original record | SPECIFICATION Specification No. SD.80/5 Sheet No. 6 Issue No. 1. Sec.No. | Title. | Description. | Design No. | Dtls. iss. LOP. No. | Remarks. ---|---|---|---|---|--- 6130 | Rear Brakes. | Girling-Rod… | ||
| scan0214 | Specification sheet listing vehicle parts with corresponding design and list of parts numbers. | ||
| View original record | SPECIFICATION Specification No. SD.80/6 Sheet No. 7. Issue No. 1. Sec.No. | Title. | Description. | Design No. | Dtls. iss. LOP. No. | Remarks. --- | --- | --- | --- | --- | --- 7030 | Rear Springs. |… | ||
| scan0215 | Specification sheet listing parts with their descriptions, design numbers, and remarks. | ||
| View original record | SPECIFICATION. Specification No. SD.80/5. Sheet No. 8. Issue No. 1. Sec.No. | Title. | Description. | Design No. | Dtls. Iss. LOP. NO. | Remarks. --- | --- | --- | --- | --- | --- 7131 | Floorboards.… | ||
| scan0216 | Specification sheet listing various parts including tools, wheel carriers, starter motor, and dynamo components. | ||
| View original record | SPECIFICATION. Specification No. SD.80/5. Sheet No. 9 Issue No. 1 Sec. No. | Title. | Description. | Design No. | Dtls. Iss. LOP. No. | Remarks. --- | --- | --- | --- | --- | --- 7400 | Spanners and… | ||
| scan0217 | Specification sheet listing various automotive components and their associated numbers. | ||
| View original record | SPECIFICATION. Specification No. SD.80/5 Sheet No. 10. Issue No. 1 Sec.No. | Title. | Description. | Design No. | Dtls. iss. LOP. NO. | Remarks. --- | --- | --- | --- | --- | --- 8270 | Heater. |… | ||
| scan0218 | Request for a sketch to modify the B.80 rocker cover due to a shrinking sealing washer. | ||
| View original record | 1044 7666a To By/Ald. from Rm/CTS. Rm/CTS.13/MR.24.7.39. B.80 ROCKER COVER. Trouble is being experienced on the car in France due to shrinkage of the rocker cover sealing washer. Will you please… | ||
| scan0219 | Torsional vibration tests performed on the B.80 No.2 engine, comparing different dampers. | ||
| View original record | 10414 1110 To By. from Rm/JRS. c. Da. c. Da/Jnr. c. Da/Mes. Rm/JRS.8/MH.24.7.39. TORSIONAL VIBRATION TESTS ON B.80 No.2. These tests were designed to give full data on all dampers applied to the B.80… | ||
| scan0220 | Analysis of vibration test results concerning damper settings, inertia, stiffness, and backlash on crankshafts and camshafts. | ||
| View original record | -2- Rm/JRS.8/MH.24.7.39. The best setting was found for each by trial and error and Fig. 2 shows the amplitudes occurring. These curves show up clearly the low frequency vibration mentioned in… | ||
| scan0221 | Comparison of the performance and reliability of Studebaker and B.80 dampers. | ||
| View original record | -3- Rm/JRS.8/MH.24.7.39. In order to compare the Studebaker and B.80 dampers, the best results obtained with each, i.e. Studebaker damper .0240 slug ft.² inertia and 55-60 rubbers and B.80 damper… | ||
| scan0222 | Comparative analysis of Buick, Cadillac, and Studebaker dampers, focusing on inertia and resonance. | ||
| View original record | -4- The Buick damper having a moment of inertia of .00603 slug ft2 was next tried and Fig. 8 shows this damper with varying degrees of stiffness. A rating of 129 lbs.ft.degree was found to be the best… | ||
| scan0223 | Comparative analysis of dampers from Buick, Cadillac, and Studebaker for the B.80 engine. | ||
| View original record | -5- RM/JRS.8/MH.24.7.39. The Buick damper is too small and if run for any considerable time would have some of the troubles of the B.80, such as corrosion of the springs. The Cadillac, while having… | ||
| scan0224 | Graph showing the results of torsional vibration tests on a B.80 No. 2 engine, fitted with a Cadillac damper. | ||
| View original record | TORSIONAL VIBRATION TESTS ON B.80 NO. 2, CADILLAC DAMPER .0081 SLUG FT2, FIG II, VIBRATION AMPLITUDE DEGREES, ENGINE RPM, RM/JRS 20-7-38 | ||
| scan0225 | Graph plotting the results of torsional vibration tests on a B.80 No 2 Buick damper. | ||
| View original record | TORSIONAL VIBRATION TESTS ON B.80 NO 2, BUICK DAMPER, LAMINATED SET AT 125 LBS FT DEGREE, SOLID SET AT 125 LBS FT DEGREE, VIBRATION AMPLITUDE DEGREES, ENGINE R.P.M, FIG 10, RM/J.R.S. 20.7.39 | ||
| scan0226 | Graph comparing torsional vibration test results for a Buick Damper and a B.80 Damper on a B.80 No. 2 engine. | ||
| View original record | TORSIONAL VIBRATION TESTS ON B.80 NO.2. BUICK DAMPER (.00603 SLUG FT² 129 LBS. FT. DEGREE⁻¹) B.80 DAMPER (.0485 SLUG FT² 318 LBS. FT. DEGREE⁻¹) VIBRATION AMPLITUDE DEGREES ENGINE R.P.M FIG. 9… | ||
| scan0227 | Graph showing the results of torsional vibration tests on a B.80 No. 2 engine with a Buick laminated damper. | ||
| View original record | TORSIONAL VIBRATION TESTS ON B.80 NO. 2 BUICK DAMPER (LAMINATED) MOMENT OF INERTIA .00603 SLUG FT^2 105 LBS. FT. DEGREE -1 129 LBS. FT. DEGREE -1 159 LBS. FT. DEGREE -1 FIG. 8 VIBRATION AMPLITUDE… | ||
| scan0228 | Graph plotting torsional vibration tests on a B.80 No.2 engine, comparing a B.80 damper with a Studebaker damper. | ||
| View original record | TORSIONAL VIBRATION TESTS ON B.80 NO.2 B.80 DAMPER .0485 SLUG FT² 318 LBS. FT. DEGREE⁻¹ STUDEBAKER DAMPER .0246 SLUG FT² 55 - 60 RUBBERS FIG. 7 VIBRATION AMPLITUDE DEGREES RM/JRS 20-7-39 | ||
| scan0229 | Graph plotting torsional vibration tests on a B.80 No.2 engine, using a Studebaker damper with increased inertia and different rubber hardnesses. | ||
| View original record | TORSIONAL VIBRATION TESTS ON B.80 NO.2 STUDEBAKER DAMPER WITH INCREASED INERTIA (.0246 SLUG FT²) 75 - 80 RUBBERS 55 - 60 RUBBERS 35 - 40 RUBBERS VIBRATION AMPLITUDE DEGREES. ENGINE R.P.M. FIG. 6 R.M.… | ||
| scan0230 | Graph plotting torque against angular deflection to show the torsional stiffness of a Studebaker damper for different rubber types. | ||
| View original record | TORSIONAL STIFFNESS OF STUDEBAKER DAMPER FIG 5. TORQUE LBS. FT. ANGULAR DEFLECTION DEGREES 75-80 RUBBERS 55-60 RUBBERS 35-40 RUBBERS RM / J.R.S. 28-6-37 | ||
| scan0231 | Graph plotting torsional vibration test results from a B.80 No. 2 engine camshaft. | ||
| View original record | TORSIONAL VIBRATION TESTS ON B.80 NO. 2 TORSIOGRAMS TAKEN FROM CAMSHAFT B.80 DAMPER WITH LARGE INERTIA (.0485 SLUG FT²) SET AT 318 LBS. FT. DEGREES. NORMAL BACKLASH .020 BACKLASH FIG. 4 VIBRATION… | ||
| scan0232 | Graph showing the results of torsional vibration tests on a B.80 No.2 engine, comparing the crankshaft and camshaft. | ||
| View original record | TORSIONAL VIBRATION TESTS ON B.80 NO.2 B.80 DAMPER + LARGE INERTIA (.0485 SLUG FT^2) SET AT 318 LBS. FT. DEGREES. CRANKSHAFT CAMSHAFT FIG. 3. VIBRATION AMPLITUDE DEGREES ENGINE R.P.M. RM/JRS 9.7.29 | ||
| scan0233 | Graph showing the results of torsional vibration tests on a B.80 No. 2 damper. | ||
| View original record | TORSIONAL VIBRATION TESTS ON B.80 NO 2 B.80 DAMPER. NORMAL DAMPER INERTIA .017 SLUG FT² 225 LBS. FT² DEGREE⁻¹ NORMAL DAMPER + SMALL INERTIA .0332 SLUG FT² 270 LBS. FT DEGREE⁻¹ NORMAL DAMPER + LARGE… | ||
| scan0234 | Graph of torsional vibration tests on a B.80 No. 2 engine with different damper settings. | ||
| View original record | TORSIONAL VIBRATION TESTS ON B.80 NO. 2 B.80 DAMPER (MOMENT OF INERTIA .017 SLUG FT2) 270 LBS. FT. DEGREE. 225 LBS. FT. DEGREE. 204 LBS. FT. DEGREE. VIBRATION AMPLITUDE DEGREES ENGINE R.P.M. FIG 1… | ||
| scan0235 | Modification to the Bentley 6C chassis cylinder head to improve slow running. | ||
| View original record | 10HH c. Rm. c.c. Rm/Swdl. By/Ald.3/AW.27.7.39. BENTLEY 6C CHASSIS. CYLINDER - SECTION 5050. Please receive herewith 2 blue prints of the following:- EXS.1869. Modification to Cylinder Head. The above… | ||
| scan0236 | Request for blueprints and instructions for modifications to water pump components for a Bentley 80 Chassis. | ||
| View original record | 126A 1047 WMB. C. Rm. Mr.Mycroft. Mr.Milln-Roberts. By/Ald.2/AW.27.7.39. BENTLEY 80 CHASSIS. WATER PUMP - SECTION 5160. Please receive herewith 2 blue prints of each of the following:- EXS.1864.… | ||
| scan0237 | Parts list for a Humber Snipe type crankshaft damper trial on a Bentley 60 chassis. | ||
| View original record | 10HH c. Rm. BY/Ald.1/AW.4.8.39. BENTLEY 60 CHASSIS. HUMBER SNIPE TYPE CRANKSHAFT DAMPER - SECTION 5020. Please receive herewith two blueprints of each of the following:- SCD.1471. Humber Snipe Type… | ||
| scan0238 | The ordering of a crankshaft damper from Pickford's for the Humber Snipe. | ||
| View original record | 10H4 + 1116. To Les. c. to Rm/Swdl. Rm/Gry.10/JH.11.8.39. We have ordered by telephone from Pickford's, a crankshaft damper like that on the Humber Snipe. Will you please send the necessary covering… | ||
| scan0239 | Requesting modifications to a B.60 cylinder head for further development and urgent testing. | ||
| View original record | 1044 To HPS. c. to HPS/RH. Rm/Swdl.12/JH.11.8.39. We are returning the B.60 cylinder head which has been used for combustion chamber development EXS.1384 and EXS.1758 for the following :- (1)… | ||
| scan0240 | Order for cheaper, extruded exhaust valves and their material composition for trial on B.60 & B.80 engines. | ||
| View original record | 10HH & 1360 To Les. c. to G/JWH. Rm/Swdl.4/JH.12.8.39. Exhaust Valves. In the July issue of the S.A.E. journal there is an interesting article on exhaust valves by Colwell. In the endeavour to produce… | ||
| scan0241 | Modification to the crankshaft damper for the Bentley 80 Chassis. | ||
| View original record | J. 10HH c. Rm. [REDACTED] BY/Ald.2/AW.12.8.39. BENTLEY 80 CHASSIS. CRANKSHAFT DAMPER - SECTION 5020. Please receive herewith two blue prints of:- EXS.1899. Crankshaft Pulley. - - - 1 off. The above… | ||
| scan0242 | The failure of the No.2 Inlet Rocker on the B.80 No.4 Unit. | ||
| View original record | 1044 To [redacted]. from HPS/RH. Rm. [redacted]. HPS/RH.1/BA.15.8.39. Valves and Fittings (B.80 No.4 Unit) Failure of No.2. Inlet Rocker. EB.4731. Occurred on 25.7.39 after 39 hours 25 mins, of which… | ||
| scan0243 | Photograph of a cast metal rocker arm, part number F67047, and a smaller related component. | ||
| View original record | F67047 | ||
| scan0244 | Specifying the flywheel and clutch assembly for R.80 Units No. 9 & 10. | ||
| View original record | 1044d spec To HPS. c. to HPS/RH. c. to By/NS. c. to Rm/wdl. Rm/WRC.4/JH.19.8.39. R.80 Units No.9 & 10. In reply to Rm/wdl.21/JH.11.8.39. the flywheel and clutch should be as follows :- 11" Long… | ||
| scan0245 | The failure of a Morse chain during an endurance test on a B.60 chain-driven camshaft unit. | ||
| View original record | 1044 To Rm, from HPS/RH. c.c. [redacted] c.c. [redacted] c.c. [redacted] HPS/RH.1/PC.21.8.39. B.60 No. 1 UNIT (ENDURANCE) CHAIN DRIVEN CAMSHAFT. Failure of Morse Chain 48 Link x .500 Pitch x 1.00… | ||
| scan0246 | Photograph of a chain driven camshaft with failure test results. | ||
| View original record | B.60.No.1 Unit - Chain Driven Camshaft. 15 links failed after 14 hours 30 mins of which 7 hours were full throttle. | ||
| scan0247 | Blueprints for a 'Studebaker' type crankshaft damper and fan pulley studs for a Bentley 80 Chassis. | ||
| View original record | HRS. c. Rm. c. Rm/Swd. c. BY/NS 1044 BY/Ald.1/G.21.8.39. BENTLEY 80 CHASSIS. CRANKSHAFT DAMPER - SECTION 5020. Please receive herewith two blueprints of :- Ex.S.1878 LOP. Crankshaft Damper. The above… | ||
| scan0248 | Clarifying the order of precedence for various B.80 water pump projects. | ||
| View original record | 10k4 & 1269 To HPS. from Rm/Ed. c. HPS/RH. Rm/Ed.11/MH.21.8.39. B.80 WATER PUMP. We understand that some confusion regarding the priority of these water pumps has arisen, and we give below a list… | ||
| scan0249 | Request to manufacture a B.80 fan with blades twisted to give a zero blade angle at the tip. | ||
| View original record | 1044 + 1135 To HPS. c. to HPS/RH. c. to Rm/ABR. Rm/Ed.8/JH.22.8.39. Fans. Will you please make up a B.80 fan with the tips of the blades in the plane of rotation. The root of the blades should be… | ||
| scan0250 | Design alterations for an induction system using a Stromberg twin downdraught carburetter. | ||
| View original record | BK/NS c. Rm. c. Rm/oms. c. Rm/ens. 10HH DA.7/G.23.8.39. B.80 - INDUCTION SYSTEM FOR STROMBERG TWIN DOWNDRAUGHT CARBURETTER WITH 1.437" DIAMETER THROTTLES. Please receive herewith :- E.CD.1462… | ||
| scan0251 | Development of carburettors and the creation of drawings for modified parts. | ||
| View original record | - 2 - and the core holes shown satisfy his requirements. When the development work on the carburetters is completed, we will make a drawing of the carburetter to include all the modifications required… | ||
| scan0252 | Request for a quotation for two petrol engine driven alternator sets for the L.M. & S. Railway special saloons. | ||
| View original record | 9303 / 15-8-39 L. M. & S. RAILWAY - TWO PETROL ENGINE DRIVEN ALTERNATOR SETS FOR SPECIAL SALOONS. E.2552/DMS/AWS. --------- Kindly let us have your quotation, to be in our hands by Friday, the 18th… | ||
| scan0253 | Extract from a specification detailing requirements for petrol engine-driven alternator sets. | ||
| View original record | (2) for this equipment, and your quotation should include for the accessories mentioned therein. EXTRACT FROM SPECIFICATION NO. CH.600. SCOPE OF CONTRACT. The contract shall include the supply and… | ||
| scan0254 | Specification sheet detailing requirements for an engine's rating, governor, fuel pump, starting equipment, ignition, and cooling system. | ||
| View original record | (3) ENGINES. The engines shall be of the standard automotive or industrial type, and shall be so rated that when the alternator is delivering its full load output the engine will only be loaded to 75%… | ||
| scan0255 | Specification document outlining requirements for a railway coach engine's cooling, exhaust, finish, and drawings. | ||
| View original record | (4) pattern provided with radiator and fan and arranged so that cooling air may be drawn from the engine compartment and discharged by means of ducting through the floor of the coach. Suitable… | ||
| scan0256 | Performance graph for a B60 4.25-litre engine with a 7.0:1 compression ratio. | ||
| View original record | B60 POWER (4 1/4 LTRE - 7.0:1 COMP RATIO) CONDITIONS 2 - 1 1/2 SH CARBS. FLUSH TOP PISTONS OPEN EXHAUST VALVE TIMING .030 CLCE IO 0° PTDC EO 30° BBDC IC 47° PBDC EC 7° PTDC DIAGRAM LABELS: IN EX PLUG… | ||
| scan0257 | Performance graph for a B60 4 1/4 Litre engine with a 7.0:1 compression ratio. | ||
| View original record | B60 POWER / 4 1/4 LTRE - 7.0:1 COMP RATIO CONDITIONS 2 - 1 1/2 SW CARBS FLUSH TOP PISTONS OPEN EXHAUST VALVE TIMING O3OCLCE IO 9° PTDC EO 30° BBDC IC 47° PBDC E 7° PTDC IN PLUG COMP PRESS'S BHP BHP.… | ||
| scan0258 | Design and experimental instruction for an induction system for Stromberg Duplex Downdraught Carburetters. | ||
| View original record | 1044 To BY/NS... from Da. c. to Rm. c. to Rm/CTS. c. to Rm/GR. Da.9/N.29.8.39. B.60 - Induction System for Stromberg Duplex Downdraught Carburetters. Please receive herewith: E.CD.1509 - Induction… | ||
| scan0259 | Alterations to the throttle control and return spring for the B.80 engine when fitting a new induction pipe. | ||
| View original record | BY/NS c. Rm c. Rm/CTS c. Rm/PD 1044 DA.1/N.1.9.39. B.80 - Throttle Control and Return Spring for use with Induction Pipes E.CD.1462. ------------------------------------------ Please receive herewith:… | ||
| scan0260 | Converting a B.60 No.3 Unit to a chain drive camshaft and obtaining a spare driving chain. | ||
| View original record | C 1044 To HPS/RH. from Rm/CTS. Rm/CTS.4/MH.13.10.39. c. Les. B.60 No.3 Unit. It is intended that this unit should be converted to chain drive camshaft to gain further experience on this type of drive.… | ||
| scan0261 | Comparing the performance of different starter motors for the B.80 engine under cold conditions. | ||
| View original record | 10744 in elect. To Ev. c. to Jnr. Rm/RC.1/JH.20.10.39. re Starter Motor for B.80. We have not yet had the opportunity of testing a B.80 engine in the cold chamber. We hope to do this in the near… | ||
| scan0262 | Outlining tests and comparisons of induction systems for 6 cylinder cast iron engines. | ||
| View original record | 1044d 1036 To Rm/Wym. c. to Rm/CTS. Rm.3/JH.31.10.39. INDUCTION SYSTEMS. On the 6 cyl. cast iron engines we intend to have two types of induction system. (1) Rolls-Royce. This will be a duplex… | ||
| scan0263 | Requesting data on time and cost savings for B.60 Rocker covers compared to the Wraith model. | ||
| View original record | 1044 1260 To G/Rb. Rm/CTS.14/JH.27.11.39. Further to our conversation re B.60 Rocker covers with your Mr. Anderson. This is to confirm that the data required on this section is as follows. (a) What is… | ||
| scan0264 | Outlining two potential methods for fitting a tachometer drive to the B60 engine. | ||
| View original record | To. R.M. TACHOMETER DRIVE ON B60 There was no point in fitting a tachometer because in the early days of the project it was said that the engine would not be run much above 4000 RPM. I see two ways of… | ||
| scan0265 | Note foreseeing limitations with the means of hobbing a spiral gear situated between two cams. | ||
| View original record | emerges upwards at about 45°. I forsee Some limitations such as the means of hobbing the Spiral gear which is between two Cams. JNR. | ||
| scan0266 | Reporting the failure of a chain during endurance testing. | ||
| View original record | 1044. To EV. c. to Jnr. Rm.10/JH.27.11.39. Unfortunately you will see from the endurance tests that the chain so far has not stood up. Rm. | ||
| scan0267 | Torsional vibration tests performed on B.60 chain drive units with various dampers. | ||
| View original record | To Ev. c. to Jnr. RM/JRS.12/JH.27.11.39. TORSIONAL VIBRATION TEST ON B.60 CHAIN DRIVE UNITS. Torsiograph records were obtained from B.60 No.1 chain drive unit with both the B.60 damper and the… | ||
| scan0268 | Analysis of low-frequency engine vibration, its potential causes, and recommendations for further investigation using different instruments. | ||
| View original record | -2- RM/JRS.12/JH.27.11.39. but this is not marked on the curves. This might either be due to some effect of the stroboscope or to a vibration of the engine and the brake at a frequency at which the… | ||
| scan0269 | Graph comparing the performance of different engine damper configurations based on amplitude and RPM. | ||
| View original record | B.60 N°3 NORMAL DRIVE. B.60 DAMPER, TORQUE 210 LBS/DEGREE. B.60 N°1 CHAIN DRIVE. B.60 DAMPER, TORQUE 210 LBS FT/DEGREE. B.60 N°3 CHAIN DRIVE. HUMBER SNIPE DAMPER. FRICTION TORQUE 50 LBS. INS. B.60… | ||
| scan0270 | Retaining the rev counter for 8 and 6-cylinder Bentley engines. | ||
| View original record | 1044 To Jnr. from Rm. Rm.6/MH.28.11.39. Many thanks for your note on Tachometer Drive. I do not think that we can abandon the rev counter on the Bentley type of vehicle at present. In addition, one of… | ||
| scan0271 | Faults experienced with B.60 and B.80 units on the test bed, specifically concerning oil leaks from side tappet covers. | ||
| View original record | 1044 To Ev. c. to Jnr. Rm/F.J.Hallam.10/JR.28.11 39 FAULTS EXPERIENCED WITH B.60 and B.80 UNITS ON TEST BED. (1) Oil leaks from side tappet covers. These can be classified as two separate leaks. (a)… | ||
| scan0272 | Technical memorandum discussing issues with crankcase oil level dipsticks and oil leaks from rocker cover joints. | ||
| View original record | -2- All B.80 units in chassis are fitted with these distance pieces. (2) Crankcase Oil Level Dipstick. The position of this is such, that when oil is poured into the crankcase through the filler, it… | ||
| scan0273 | Proposed design for die-cast rocker covers with a continuous groove. | ||
| View original record | -3- strip, forming a continuous lip round the inside edge of the cover. These are being tried out on B.80 units in the garage. Griffon rocker covers have a similar groove as Wraith and Bentley and we… | ||
| scan0274 | Endurance testing and standardization of a chain drive. | ||
| View original record | 1044 To Ev. c. to Jnr. Rm.12/JH.29.11.39. CHAIN DRIVE. Until a chain will last our normal bearing endurance run of 30 hours we cannot think of standardising. We shall have to repeat the run (when we… | ||
| scan0275 | Test report on the B.60 chain-driven camshaft unit, detailing observations and an endurance schedule. | ||
| View original record | To Ev. c. to Jnr. Rm/JRS.1/JH.30.11.39. B.60 Chain Driven Camshaft Unit. B.60 No.1 fitted with a chain drive to the camshaft commenced running on 14.7.39. The engine was run for a short time without… | ||
| scan0276 | Engine endurance testing, detailing component failures and subsequent modifications. | ||
| View original record | -2- Rm/JRS.1/JH.30.11.39. the half and quarter load hours were run as follows - 15 mins. at 3000 r.p.m. 15 mins. at 3500 r.p.m. 30 mins. at 4000 r.p.m. After two hours endurance the water pump seized.… | ||
| scan0277 | Engine component failures, analyzing chain breakages, bearing seizures, and an unsound damper design. | ||
| View original record | -3- Rm/JRS.1/JH.30.11.39. A new one was fitted and after a further 2¼ hours this failed in the same way. The cause of this is either misalignment of the bed or due to a low frequency torsional… | ||
| scan0278 | Power curve graph for the B.60 No. 1 engine with a chain-driven camshaft, showing BMEP, BHP, and back pressure against engine RPM. | ||
| View original record | VALVE TIMING:- I.O. 3 3° A.T.D.C. .030 TAPPET CLEARANCE I.C. 25 7° A.B.D.C. E.O. 46 5° B.B.D.C. E.C. 8 3° B.T.D.C. CYL HEAD EXS 1758 .100 OFF FACE 6·9:1 COMPRESSION RATIO B.M.E.P. B.H.P. BACK PRESSURE… | ||
| scan0279 | Graph comparing the performance of various engine dampers at different engine speeds. | ||
| View original record | B.60 N° 3 NORMAL DRIVE B.60 DAMPER, TORQUE 210 LBS/DEGREE. B.60 N° 1 CHAIN DRIVE B.60 DAMPER TORQUE 210 LBS FT/DEGREE. B.60 N° 3 CHAIN DRIVE. HUMBER SNIPE DAMPER FRICTION TORQUE 50 LBS. INS. x x x x… | ||
| scan0280 | From Rm to HPS requesting the completion of five essential parts required for ongoing tests. | ||
| View original record | 1044 To HPS. from Rm. Rm.7/MH.30.11.39. Will you please complete the following pieces for us. The induction pipe castings are available and they are the most important parts needed to keep our tests… | ||
| scan0281 | Urging the completion and fitting of a flexible coupling for the No.5 Test House. | ||
| View original record | 1044 D 1209. To Mr. Peskett (Millwrights) Rm/JRS.S/JH.30.11.39. re Flexible Coupling for No.5 Test House. This coupling J.22372 called for in memo. EJJ/DH.21/JA. 10.7.39. hasnot yet been fitted… | ||
| scan0282 | New pattern for a 3 1/4-bore 6-cylinder engine with provisions for a 3 3/4-bore unit. | ||
| View original record | 1044. To Ev. from Rm. Rm.2/MH.6.12.39. HIGH POWER 6-CYLINDER ENGINES. This is to confirm that we expect to make a new pattern for the 3¼-bore 6-cylinder engine, and in order to get the maximum use out… | ||
| scan0283 | Design and limitations of the tachometer drive for B.60 & B.80 models. | ||
| View original record | 10HH To Rm. c.c. to Jnr. Jnr.12/JH.8.12.39. Tachometer drive B.60 & B.80. Re your conversation on the 'phone, the drive design is now complete. The limitations are that the shaft emerges from the… | ||
| scan0284 | Required repairs and replacement parts for a B.60 No.1 Unit engine after a valve failure. | ||
| View original record | 10HH To HPS. c. to HPS/RH. Rm/CTS.10/JH.12.12.39. B.60 No.1 Unit. This engine is at present stripped in No.30 Test House for weight analysis. We wish to send the parts into the shop for inspection, as… | ||
| scan0285 | List of chassis troubles and an explanation of the work being carried out to resolve them. | ||
| View original record | 10HH + 1022 To Ev. c. to Jnr. Rm/FD.8/JH.15.12.39. Chassis Troubles. The following is a list of chassis troubles and an explanation of the work done or being carried out :- 1 Rocker cover oil leaks… | ||
| scan0286 | Various vehicle component issues such as piston blowby, water in the servo, and noisy heaters, along with attempted modifications. | ||
| View original record | -2- A scheme has been tried of cutting grooves in the bakelite washer, so letting the water act as a lubricant. Result. This has not proved a definite cure and only lasted some 1,200 miles. Further… | ||
| scan0287 | Engine and chassis issues including noisy tappets, carburation, and shock damper knocks. | ||
| View original record | -3- Rm/FD.9/JH.15.12.39. the smaller chassis i.e. 12.B.V. and 1.R.1. Noisy Tappets. Several cases have been found on the B.80 engines of the valve springs (exhaust) fouling the machined recess in the… | ||
| scan0288 | Two additional work features: fan noise and improving the 8-cylinder engine mounting. | ||
| View original record | 1048, 1127, & 1135 To Rm/FD. c. to Rm/Wym. Rm.6/JH.15.12.39. file 10HH & 1022 Two features not mentioned in your list of work going on are:- (1) Fan noise. (2) Improvement in 8 cyl. engine mounting to… | ||
| scan0289 | Confirming the decision to fit a Humber damper to a B.60 No.1 Unit. | ||
| View original record | 1044 To HPS. c. to HPS/RH. Rm/CTS.12/JH.19.12.39. B.60 No.1 Unit. Further to our memo. Rm/CTS.10/JH.12.12.39. It has now been decided to fit a Humber damper to this unit. Will you therefore complete… | ||
| scan0290 | Request for a revised crankshaft drawing to incorporate a new damper for a B.60 No.1 unit. | ||
| View original record | 1044 TO Ev. c. to Jnr. c. to HPS/RH. Rm/CTS.14/JH.19.12.39. CRANKSHAFT. Further to the rebuild of B.60 No.1 unit for test bed development, this is to be fitted with a new 2.75" journal crankshaft… | ||
| scan0291 | Confirming the inclusion of a new 3 litre, 6-cylinder engine and sending pictures of other bore engines to Vickers. | ||
| View original record | To Ev. c. to Jnr. Rm.6/JH.29.12.39. FULL RANGE OF 6 CYLINDER ENGINES. This is to confirm that we want to include in our range of 6 cylinder engines a unit of 2.953 bore to have a capacity of 3 litres.… | ||
| scan0292 | Proposing a 3 litre 6 cylinder engine as a replacement, discussing component usage and crankshaft analysis. | ||
| View original record | 10444 1116 To Rm/Gry. c. to Rm/JRS. Rm.9/JH.30.12.39. Crankshaft Torsional Frequency 3 litre 6 cyl. Engine. We are proposing to make a 3 litre 6 cyl. engine as an insurance policy against the four 2.8… | ||