Rolls-Royce Archives
| Identifier | Entry | ||
| scan0001 | Diameter and tightening of cylinder head studs for the Peregrine and Bensport engines. | ||
| View original record | 219. To R. from E. c.c. Sg. For. HS. By. E.4/HP.4.6.32. re Bensport Engine - Cylinder Head Studs. On the present Peregrine Engine the diameter of the cylinder head studs is .25", and this has been… | ||
| scan0002 | Technical analysis of engine cylinder head stud stress and design considerations. | ||
| View original record | (2) | Engine. | Stud dia. | Stress at bottom of thread with max. cyl. press 500 lbs.sq" | Stress at bottom of thread with 1000 lbs sq" press: | |---|---|---|---| | P.II. | .375. | 17.000 | | | 20/25.… | ||
| scan0003 | Cylinder head nuts for Peregrine & Bensfort engines, debating stud size and materials. | ||
| View original record | X219. E. FROM R. R1/M6.6.32. C. to SG. WOR. BY. HS. X.4027 X.4553. PEREGRINE & BENSFORT CYLINDER HEAD NUTS. In reply to your memo. E 4/HP4632., I should not consider for a moment departing from our 6… | ||
| scan0004 | Material and design considerations for Bensport Cylinder Studs. | ||
| View original record | V 1219 To R. from E. c. Sg. Wor. Hs. E.7/HP.6.6.32. re Bensport Cylinder Studs Referring to telephone conversation of this afternoon, we had not lost sight of the question of the thread in the… | ||
| scan0005 | Drawing LeC.3115 for a cylinder head, valves, and rocker gear for the Bensport and Peregrine engines. | ||
| View original record | X 219- To BY. from E. c. Sg. Wor. HS. E.1/HP.13.6.32. We send you herewith drawing LeC.3115 showing the cylinder head, valves valve rocker gear, etc for Bensport and Peregrine. Would you please put in… | ||
| scan0006 | Sanctioning a trial of a cylinder head having six exhaust and six inlet ports for the Peregrine & Bensport engine. | ||
| View original record | X219- E. } FROM R. HS. } C. to SG. WOR. BY. R3/M15.6.32. Sent off 20.6.32. X.4027 X.4553 PEREGRINE & BENSPORT CYL+ HEAD. As before remarked we are quite pleased to sanction a trial being made of a… | ||
| scan0007 | Investigation into cylinder stud and gasket failures on a supercharged Peregrine engine for the 'Bensport' project. | ||
| View original record | 8219 To R. from E. c.c. Mr. Nor. Mr. Ev. Mr. AHG. re Bensport. We find we are unable to maintain a good joint with a metal gasket on the supercharged Peregrine fitted with .25 dia. cylinder studs. As… | ||
| scan0008 | Stress analysis and comparison data for Kestrel and Bensport engine studs. | ||
| View original record | - 2 - Engine. Pressure area. sq.ins. Area of stud section. sq. ins. No.of studs per cyl. Ratio-pressure area to stud area. Ref Kestrel. 20.629. .185(Bottom of thread) 4 27.9. B. " 20.629. .2485 -do- 4… | ||
| scan0009 | Confirmation of a telephone message regarding issues and improvements for the Peregrine & Bensport engine head joint. | ||
| View original record | HS. ) FROM R. E. X219 CONFIRMATION OF TELEPHONE MESSAGE. R1/M26.9.32. C. to SQ. WOR. BY. PEREGRINE & BENSPORT. ENGINE HEAD JOINT. x4027 (1) The first thing that we notice is that there are signs of… | ||
| scan0010 | Design points and improvements for an engine, including valves, gaskets, and cooling. | ||
| View original record | (2) (9) The exhaust valve might be made to open late, and suddenly, and close more slowly, making less noise, when noise and shock is no use to us. (10) Is it assumed impractical in cost or size to… | ||
| scan0011 | Proposal to modify a cylinder block for a Bensport cylinder head. | ||
| View original record | X219.- To-R. from E. E.7/HP.1.10.32. c. Sr. Wor. Hs. Bv. re Bensport Cylinder. ------------------- Since the Bensport head with six exhaust ports requires a new cylinder block pattern in any case,… | ||
| scan0012 | Modifications to the Bensport cylinder head following testing. | ||
| View original record | To RHC. from Hs/Rm. r 219. Hs/Rm.9/KT.13.1.33. BENSPORT CYLINDER HEAD. As a result of our recent test, machining out the combustion chamber of the Bensport cylinder head, we have now established the… | ||
| scan0013 | Reminding about an unresolved issue with the Bensport cylinder head and piston alignment. | ||
| View original record | X 219. To Hs. from E. c. By. By/SS. E.2/HP.16.2.33. re Bensport Cylinder Head and Piston. This is to remind you that you are looking into the question which has been raised in connection with the… | ||
| scan0014 | The machining of a J.1 cylinder head casting for a Bensport car. | ||
| View original record | X219- RHC. From Hs/CPS. Hs/CPS.3/MA.27.2.33. BENSPORT. We have available a J.1 cylinder head casting to E.56604 which it is desired to have completed similar to the head fitted to the first Bensport… | ||
| scan0015 | Cylinder head modifications for the 'Bensport' model, including trepanning and combustion space depth reduction. | ||
| View original record | 8219. To BY. from E/JNR. c. Wor. Hs. E./JNR.9/HP.28.2.33. re Bensport. We send you herewith: LeC.3393 showing the trepanning of the cylinder head, and the instructions on the drawing release the whole… | ||
| scan0016 | Potential incorrect assembly of the Bensport Rocker Shaft's central pedestal and proposing a modification to prevent it. | ||
| View original record | Rm X219 To BY. from E/JNR. E/JNR.5/HP.21.4.33. c. Hs. RHC. re Bensport Rocker Shaft. The Experimental Shop have brought to our notice that the central pedestal of the rocker shaft can be placed in… | ||
| scan0017 | Modifications to the Bensport Cylinder Head to increase the compression ratio. | ||
| View original record | x219- To BY. from E. c. Hs. E.1/HP.13.5.33. Bensport Cylinder Head. ----------------------- We understand from the Experimental Department that from their observations of other cars we are likely to… | ||
| scan0018 | Listing technical drawings for the Bensport water by-pass regulator and noting an alteration to the water drain cock. | ||
| View original record | X219 To By. from E/JNR. c.c. for. Hs. RHC. E/JNR.3/HP.13.5.33. re Bensport - Water By-pass Regulator. We send you herewith: LeC.3488 - showing the water thermostat incorporated in the front cylinder… | ||
| scan0019 | Required capacity for altered Bentley engine head castings to achieve the correct compression ratio. | ||
| View original record | X219. To RHC. from Hs/Rm. Hs/Rm.11/KT.19.5.33. BENTLEY COMPRESSION RATIO. With reference to the 6.6/1 c.r. head which we have asked for, for the 4th. Bentley, the heads now being produced should have… | ||
| scan0020 | Instructing modifications to a cylinder head for larger valves and higher compression ratios. | ||
| View original record | C.T. Salt. --------- X219. Hs/Rm.14/KT. 7.6.33. Will you please follow up the cylinder head instructed in the attached note. We think that with these larger valves we shall require still higher… | ||
| scan0021 | Three proposed experiments on a Bentley cylinder head to improve power output. | ||
| View original record | X219. To RHC. from Hs/Rn. Hs/Rn.6/KT.19.6.33. BENTLEY CYLINDER HEAD AND POWER OUTPUT. We want to carry out three experiments on the Bentley cylinder head all of which could be incorporated XXXX on the… | ||
| scan0022 | Modifications to the inlet valve and cylinder head for 'Bensport' power output. | ||
| View original record | x 219. To RHC. from Hs/Gry. Hs/Gry.2/KT. 21.6.33. BENSPORT POWER OUTPUT. We send you herewith a sketch of modifications to the inlet valve and cylinder head suggested by Lr. to obtain better… | ||
| scan0023 | Blueprint for a modified Bentley Cylinder Head to improve airflow. | ||
| View original record | X219. To Hs/Rm. from E/JNR. E/JNR.1/HP.14.7.33. Bentley Cylinder Head. We send you herewith blueprint: LeC.3571 showing the modified shape to the inlet bends of the cylinder head, to improve the flow… | ||
| scan0024 | Standardisation and testing of Bentley engine compression ratios. | ||
| View original record | xna To By. from Hs/Rm. c. Wor. E. c. Mx. Sft. Hs/Rm.7/KT. 26.7.33. BENTLEY COMPRESSION RATIOS The Bentley at present running in France has a compression volume of 97 cc. This we think should be… | ||
| scan0025 | Measurement data for three different cylinder heads. | ||
| View original record | Hs/Rm.7/KT. 26.7.33. No.1 Cyl. Head. (Works). 1. 2. 3. 4. 5. 6. 102.5 102.5 103.5 102.5 103.0 101.5 No.2. Cyl. Head. (Test). 102.0 102.0 103.0 102.5 102.5 101.5 No.3. Cyl. Head. (Test). 101.5 101.25… | ||
| scan0026 | Failed Cylinder Head Gasket from a 3.5 Litre Bentley engine. | ||
| View original record | Hs from Mx. X219. Mx3/T31.7.33. 3 1/2 Litre Bentley - Cylinder Head Gasket. We are sending you a Cylinder Head Gasket which has failed during the running of this engine. It was found there was no… | ||
| scan0027 | Requesting modifications to a Bentley cylinder head for larger valves and an increased compression ratio. | ||
| View original record | X219. To RHC. from Hs/CTS. Hs/CTS.4/KT.11.9.33. BENTLEY. CYLINDER HEAD (LARGE VALVES). We are sending XXXXXX into the shop a cylinder head which at the moment has valves with 30° seats. Will you… | ||
| scan0028 | Design changes and specifications for an experimental Bentley aluminium cylinder head. | ||
| View original record | K219. To BY. from E/JNR. E/JNR.1/HP.28.9.33. c. Wor-Hs. RHC. re Bentley Aluminium Cylinder Head. We send you herewith drawing: LeC.3645 shewing an experimental aluminium cylinder head with a… | ||
| scan0029 | Blueprint LeC.3662, detailing an experimental cast iron head for a Bentley. | ||
| View original record | To RHC. from E/JNR. X219. E/JNR.6/HP.7.10.33. c. Hs. re Bentley. We send you herewith blueprint LeC.3662 shewing an experimental cast iron head modified for experimental purposes to try out the 1.2"… | ||
| scan0030 | Request for wooden models of a Bensport cylinder head to conduct air flow tests. | ||
| View original record | X2-19 To RHC. from Hs/Std. BENSPORT CYLINDER HEAD - MODELS FOR AIR FLOW TESTS. We wish to carry out some air flow tests on suggested experimental types of Bensport cylinder head, and should like for… | ||
| scan0031 | Design change to the Bentley Aluminium Cylinder Head valve seating angle. | ||
| View original record | To BT. from E/JNR. c. Hs. RHS. X219 E/JNR.3/HP.1.11.33. Bentley Aluminium Cylinder Head. We send you herewith drawing: LeC.3685 shewing a modification to the exhaust valve insert and the valve… | ||
| scan0032 | Exhaust valve seats for car engines, referencing data from aero engine tests. | ||
| View original record | X219 To E. from Hs/Rm. c. to By. Hs/Rm.4/KT. 7.11.33. X254 EXHAUST VALVE SEATS - CAR ENGINES. In view of the fact that two aluminium heads are going through for the cars, we have summarised the… | ||
| scan0033 | Outlining the design points for experimental exhaust valve seats for a Bentley aluminium cylinder head. | ||
| View original record | To E; from Hs/CTS. c: to Ey. Hs/CTS.6/KT.7.11.33. BENTLEY ALUMINIUM CYLINDER HEAD. EXHAUST VALVE SEATS. The attached drawing V.1653 shows an experimental valve seat; dimensions having been compiled… | ||
| scan0034 | Blueprint for an exhaust valve seat. | ||
| View original record | V 1653. CYL. HEAD DIMN. MACHINE TO GIVE 'O1O DIMN CLEARANCE VALVE SEAT. (EXHAUST) N.M.C. BENTLEY. 6.OFF ROLLS-ROYCE, LTD PRINT ROOM 7 NOV 1933 DERBY. TURN. 1.492 / 1.500 DIA. SCREW. 1.500 20 T.P.I.… | ||
| scan0035 | Promising preliminary test results of a new cylinder head design (LEG.3673) using a wooden model. | ||
| View original record | X219. To Sg. From Hs/Rm. c. WGT. c. E. c. Rec. c. Hy. c. BH. Hs/Rm.12/KT.1.12.33. NEW CYLINDER HEAD LEG.3673. We have carried out some preliminary tests on E's proposed new cylinder head. We utilised… | ||
| scan0036 | Addition to a report on tests for the valving efficiency of F.II A Bentley engines, comparing cylinder heads. | ||
| View original record | To Sg. From Hs/Std. C. Wor. E. Ks- C. Hy. En. Hs/Std.3/KT.30.11.33. FURTHER ADDITION TO REPORT ON TESTS ON EFFICIENCY OF VALVING OF F.II A BENTLEY ENGINES. Hs/Std.11/VA.24.8.33. Since making the above… | ||
| scan0037 | Air flow pressure difference tests conducted on various wooden and standard cylinder head models, with and without cylinder barrels attached. | ||
| View original record | -2- 3. Air flow press. difference curve for wooden model of EB.615 head. 4. Air flow press. difference curve for wooden model of Lec.3673 head. Note. These tests were carried out in the usual manner,… | ||
| scan0038 | Summary comparing flow improvements between different head designs using wooden models. | ||
| View original record | -3- Note. In order to afford a fair ground for comparison, having only a wooden model of the new head, wooden models were used both for the Lec.3673 figures and the Standard EB.615 ones, since, owing… | ||
| scan0039 | Graph comparing airflow curves for three different types of Bentley cylinder heads. | ||
| View original record | BENTLEY SHEET 1 FLOW - CU.FT. / MIN. PRESS: DIFFERENCE ACROSS VALVE - INS. HG. COMPARISON OF AIR FLOW CURVES FOR (1) STD. BENTLEY HEAD - EB 615 (1.4 DIA: VALVES) (2) LARGE VALVE BENTLEY HEAD (1.5 DIA:… | ||
| scan0040 | Graph showing the effect of a cylinder barrel's presence on air flow and comparing two different cylinder head models. | ||
| View original record | BENTLEY SHEET 2 CURVES SHOWING EFFECT OF PRESENCE OF CYLINDER BARREL ON AIR FLOW, AND COMPARISON OF CYL: HEADS EB.615 (STD) AND L.E.C. 3673 AIR FLOW - CU.FT. / MIN: PRESS. DIFFERENCE ACROSS VALVE -… | ||
| scan0041 | Graph comparing airflows with standard and increased valve lifts against pressure difference for a Bentley head model. | ||
| View original record | SHEET 3 BENTLEY AIR FLOW - CU.FT. / MIN. PRESS. DIFFERENCE ACROSS VALVE - INS. HG. COMPARISON BETWEEN AIRFLOWS WITH (1) STD. VALVE LIFT - .400" (2) INCREASED VALVE LIFT - .450" USING L.E.C. 3673 HEAD… | ||
| scan0042 | Blueprint showing a cross-section of a valve assembly and guide. | ||
| View original record | [ "L_E C3673", "1.3" DIA", "1.5" DIA", "A", "lve" ], | ||
| scan0043 | Promising preliminary tests of a new cylinder head and inquiring about patent status. | ||
| View original record | 1219 Hs/Rm To H. from Sg. Re New Cylinder Head/LEC.3673. Sg3/E4.12.33 Copy to Her.Hs/Rm.Rg. I am very pleased to see from Hs/Rml2/KT.1.12.33 that the preliminary tests with your proposed new cylinder… | ||
| scan0044 | Responding to an inquiry about the patent status of Cylinder Head Lec.3673. | ||
| View original record | To Sg. from E. c. Wsr. Ms. Ht. By. Dn. x219. E.14/HP.5.12.33. Cylinder Head Lec.3673. Replying to your memo Sg.3/E.4.12.33, we have been closely following up the patent position in connection with… | ||
| scan0045 | Tests analysing differences in flow between wooden models and actual machined castings for Phantom II & Bentley engine valving. | ||
| View original record | FILES. x219 6.12.33. FURTHER ADDITION TO REPORT ON TESTS ON x1497 EFFICIENCY OF VALVING OF P.II & BENTLEY ENGINES. (Hs/Std.11/MA.24.8.33). Since making the above report attempts have been made to… | ||
| scan0046 | Conclusions and summary of tests on engine head modifications, including streamlining ports and adjusting the inlet valve. | ||
| View original record | -2- CONCLUSIONS FROM TESTS. (1) Improvement of streamlining of port etc. as tried gives a very slight increase in flow - this would probably not be detected on an engine (see attached curve). (2)… | ||
| scan0047 | Graph comparing various Bentley cylinder heads by air-flow tests. | ||
| View original record | COMPARISON OF VARIOUS BENTLEY CYLINDER HEADS BY AIR-FLOW TESTS. FLOW. CU. FT/MIN PRESS. DIFF: ACROSS VALVE - INS. HG. (1.5" VALVE) (1.4" VALVE) (1.5" VALVE) (1.5" VALVE) (1.4" VALVE) EB.1237 ALUM.… | ||
| scan0048 | Comparison of airflow properties for three different Bentley cylinder head designs. | ||
| View original record | FILES. X219. 7.12.33. COMPARISON OF AIR FLOW PROPERTIES OF STANDARD BENTLEY HEAD, LEC.3673 DESIGN, AND 8 LITRE BENTLEY HEAD. STANDARD BENTLEY. 8 LITRE BENTLEY. LEC.3673. VALVE AREA 1.54 sq.in. 3.03… | ||
| scan0049 | Graph comparing air flow versus pressure difference for various Bentley cylinder head designs. | ||
| View original record | BENTLEY LEC. 3673 MODEL COMPARISON OF (1) ACTUAL STD CYL. HEAD (E.B. 615) (2) WOODEN MODEL OF STD CYL. HEAD (E.B. 615) (3) WOODEN MODEL OF PROPOSED HEAD (LEC 3673) ALL CURVES AT .400" VALVE LIFT AIR… | ||
| scan0050 | Performance testing of a higher compression cylinder head for a Bentley engine. | ||
| View original record | X219 To Sg. from Hs/Rm. C. Wor. E. C. By. Rn. C. EV. Hs/Rm.R/KT.13.12.33. r-rusa BENTLEY PERFORMANCE. We have now tested the higher compression larger inlet valve cylinder head to an LsC. design. It… | ||
| scan0051 | The purchase of a J.A.P. motorcycle cylinder head for research into combustion chamber design and volumetric efficiency. | ||
| View original record | To Sg. From HS/Rm. X219 c. to Hcr. c. to E. c. to Bn. Hs/Rm. 7/KW21.12.33. In connection with our tests on cylinder heads, it has been suggested that we should obtain one or two of the most up-to-date… | ||
| scan0052 | Requesting the simultaneous completion of aluminium and cast-iron Bentley high-compression cylinder heads for comparative testing of detonation characteristics. | ||
| View original record | To RHC. from Hs/CTS. X 219 Hs/CTS12/KW4.1.34. Bentley High Compression Cylinder Heads. An aluminium cylinder head is at the moment being produced to LeC.3645, 3653, with valves to E.B.1247 - 8. At the… | ||
| scan0053 | Requesting an experimental report on corrugated sheet metal cylinder head gaskets for potential use on the Spectre engine. | ||
| View original record | [Handwritten] GRX see me Hs To Hs. from E/Lid. [Handwritten] X219 E/Lid.1/HP.13.1.34. Cylinder Head Gaskets. We should be glad if you will let us have an experimental report on the corrugated sheet… | ||
| scan0054 | Comparison of high compression aluminium and cast iron cylinder heads. | ||
| View original record | 22.3.34. Comparison of High Compression Aluminium and Cast Iron Cylinder Heads. These experiments were carried out with the intention of determining whether it was possible to run with a higher M.E.P.… | ||
| scan0055 | Report comparing the detonation characteristics and Mean Effective Pressure (M.E.P.) of aluminium versus cast iron cylinder heads. | ||
| View original record | -2- With regard to detonation, we found that on both heads the point where audible detonation ceases is approximately the same in relation to spark position from T.D.C. The aluminium head allows about… | ||
| scan0056 | Performance graph comparing different Bentley cylinder heads, showing Brake Horsepower and B.M.E.P. against R.P.M. | ||
| View original record | B.V.22 COMPARISON OF CYLINDER HEADS (BENTLEY) UNIT:- B.4.A ① ALUMINIUM CYLINDER HEAD (COMPRESSION RATIO 7.38 : 1) ② CAST IRON " (COMPRESSION RATIO 7.38 : 1) ③ " " " INLET TAPPETS .011 EXHAUST .009 NO… | ||
| scan0057 | Graph comparing the compression pressure of Aluminium vs. Cast Iron cylinder heads on a Bentley B.A.A. unit. | ||
| View original record | COMPARISON OF CYLINDER HEADS (BENTLEY). UNIT. - B.A.A. ① ALUMINIUM CYLINDER HEAD (COMPRESSION RATIO 7.38:1) ② CAST IRON " " ( " " ) FOR VALVE TIMING SEE BV.21 COMPLETE AIR SILENCER & TEST BED EXHAUST… | ||
| scan0058 | Performance comparison graph for Aluminium versus Cast Iron Bentley cylinder heads. | ||
| View original record | B.V.24. CYLINDER HEAD COMPARISON (BENTLEY) UNIT: B.4.A. ① ALUMINIUM CYLINDER HEAD (COMPRESSION RATIO 7.38:1) ② CAST IRON COMPLETE AIR SILENCER & TEST BED EXHAUST SYSTEM MAX. IGNITION ADVANCE AVOIDING… | ||
| scan0059 | Graph comparing the performance of Aluminium and Cast Iron cylinder heads for a Bentley unit, measuring B.M.E.P against R.P.M. | ||
| View original record | B.V.25 CYLINDER HEAD COMPARISON (BENTLEY) UNIT: B.4A. ① ALUMINIUM CYLINDER HEAD (IGNITION SET FOR MAX. POWER) ② ALUMINIUM CYLINDER HEAD (IGNITION SET TO AVOID DETONATION) ③ CAST IRON CYLINDER HEAD… | ||
| scan0060 | The testing and modification of a Bentley aluminium cylinder head. | ||
| View original record | To RHC. X219 Hs/CTS.10/KW.25.4.34. BENTLEY CYLINDER HEAD. Cyl. Head. We send you herewith Hs.1372 Aluminium Will you please produce one of these for test purposes, as we wish to see how the larger… | ||
| scan0061 | Higher compression cylinder heads for the Bentley, concluding a 7:1 ratio is the limit. | ||
| View original record | X219 EXPERIMENTAL DEPARTMENT REPORT REFERENCE :- Hs/Rm.3/MA.15.5.34. Subject of Report :- Higher Compression Cylinder Heads for the Bentley. General Conclusions :- 7:1 is the limiting ratio under the… | ||
| scan0062 | The testing and performance of high compression cylinder heads for Bentley engines. | ||
| View original record | He/Rm.3/MA.15.5.34. HIGH COMPRESSION CYLINDER HEADS, BENTLEY. It is of interest to note that the 6.86:1 cast iron cylinder head to LeC.3662 has now completed 10,000 miles on the streamlined car, which… | ||
| scan0063 | Power output and valve timing diagram for a 3 1/2 Litre Bentley engine. | ||
| View original record | UNIT B. 4.A. 3 1/2 LITRE BENTLEY. POWER OUTPUT 12. 2. 23 SPEC. ① COMP. RATIO 6·45:1 (E.B. 615) IN. VALVE E.B. 164 (1·400 DIA) EX. VALVE E.B. 165 (1·300 DIA.) ② COMP. RATIO 6·80:1 (Lec 3662) IN. VALVE… | ||
| scan0064 | Graph of I.M.E.P. & B.M.E.P. curves for various pistons against R.P.M. | ||
| View original record | [ "I.M.E.P. & B.M.E.P. CURVES WITH VARIOUS PISTONS", "CYLINDER HEAD WITH LARGE INLET (1.500 DIA) & SMALL EXHAUST (1.200 DIA) VALVES", "COMPRESSION RATIO 6.9:1", "UNIT No B.6", "OPEN EXHAUST", "VALVE… | ||
| scan0065 | Performance graph comparing different Bentley cylinder head configurations, materials, and compression ratios. | ||
| View original record | B.V.22 COMPARISON OF CYLINDER HEADS (BENTLEY) UNIT - B.4.A. 1 ALUMINIUM CYLINDER HEAD (COMPRESSION RATIO 7.38:1) LEC3LLS 2 CAST IRON (COMPRESSION RATIO 7.38:1) NO AIR SILENCER - INLET 1.450 OPEN… | ||
| scan0066 | Request for work to conduct experiments comparing the roughness of 20/25 HP and Bentley cylinder heads. | ||
| View original record | To RHC. X219 Hs/FJH.3/KW.28.5.34. Experiments on the roughness of 20/25 HP. and Bentley Cyl. Heads. We wish to carry out on chassis 18-G-IV some tests to compare the roughness of the 20/25 HP. type… | ||
| scan0067 | Modifications for Bentley Cylinder Heads. | ||
| View original record | T219 RHC. Hs/CTS.1/KW.5.6.34. BENTLEY CYLINDER HEADS. We are sending into the shop the latest cylinder head you have produced (Hs.1372). Will you please carry out the following modifications :- Scheme… | ||
| scan0068 | Request to produce a high compression cylinder head for a Bentley. | ||
| View original record | X219 RHC. From Hs/CTS. Hs/CTS.2/MA.7.6.34. BENTLEY HIGH COMPRESSION CYL. HEADS Will you please produce a cyl. head incorporating the following :- EB1237 Cyl. head (7.35:1 CR). in cast iron. Ex.12089… | ||
| scan0069 | Modifications to the Aluminium Bentley Cylinder Head, specifically the use of steel washers and new collars for double valve springs. | ||
| View original record | X219 Rm To ~~BY~~. from E/JNR. E/JNR.6/HP.21.6.34. c. ~~Hs~~ RHC. re Aluminium Bentley Cylinder Head. Ref.RHC.4/BE.12.6.34. We agree that when double valve springs are fitted to the aluminium head, it… | ||
| scan0070 | Modification to the gudgeon pin plug, introducing a conical end based on the Bentley design. | ||
| View original record | Rm [REDACTED] BY.9/G. 27.6.34. What about it? c. Hs. RE: FORM OF THE HEAD OF THE GUDGEON PIN PLUG. HR.15.6.34. Referring to the attached memo Hd/SB.38/ the further point which arose out of the above… | ||
| scan0071 | The design, performance and potential alterations of the Bentley gudgeon pin plug. | ||
| View original record | By. c. to Wor. c. to E. x219 Hs/Rn.3/KW.2.7.34. Form of the Head of the Bentley Gudgeon Pin Plug. With reference to By9/G.27.6.34. We have a drawing of the Bentley gudgeon pin button dated 29.9.28. We… | ||
| scan0072 | Tendency for Bentley gudgeon pin buttons to work loose due to insufficient taper, with a request to produce new sets. | ||
| View original record | To RHC. x219 HS/Rm.5/KW.2.7.34. Bentley Gudgeon Pin Buttons: There seems to be a certain tendency for these buttons to work loose and the Bentley Service Station say they think it is because there is… | ||
| scan0073 | Instruction to modify a Bentley cylinder head (EB.1237) by machining the face to reduce capacity. | ||
| View original record | To RHC. From Hs/CTS. f219 Hs/CTS.1/MJ.17.7.34. BENTLEY CYLINDER HEAD. Will you please modify the existing head (EB.1237) as follows - Machine the face to reduce the capacity to 82 cc's. Hs/C.T.Salt. | ||
| scan0074 | Request for a print of the valve gear scheme for a Bentley 'Power' Head to estimate its performance. | ||
| View original record | x219 To E. Hs/Smth.12/KW. 24.7.34. Bentley 'Power' Head. Will you please let us have a print of the valve gear scheme for this head, so that we may be able to estimate the performance of the head.… | ||
| scan0075 | Letter from Wills Pressure Filled Joint Ring, Ltd. offering their patented pressure filled joint rings for testing. | ||
| View original record | WILLS PRESSURE FILLED JOINT RING, LIMITED, SALMON PARADE, BRIDGWATER. TELEPHONES: BRIDGWATER 241 & 242. (PRIVATE BRANCH EXCHANGE.) TELEGRAMS: WILLS, PHONE, BRIDGWATER. DIRECTORS: A. F. WILLS… | ||
| scan0076 | Promotional leaflet for 'Magister Pressuum' pressure-filled joint rings. | ||
| View original record | BWG Magister Pressuum WILLS PRESSURE FILLED JOINT RING, LTD., SALMON PARADE — BRIDGWATER, SOM. | ||
| scan0077 | Illustrations of various applications for Wills Pressure Filled Rings and Joints. | ||
| View original record | Top Left Panel: APPLICATION IN COMBINED METAL AND PRESSURE FILLED RINGS FOR CYLINDER HEAD GASKET. Wills Pressure Filled Joint Ring. Pat. N° 380853. Metal Sheet 1/8 THICK or Steel Aluminium, Copper or… | ||
| scan0078 | Data sheet for the Wills Pressure Filled Joint Ring, including a performance graph and patent information. | ||
| View original record | WILLS PRESSURE FILLED JOINT RING, Limited, Salmon Parade - - BRIDGWATER. Telephone : Bridgwater 241 and 242. Telegrams : "Wills-Phone-Bridgwater." DIRECTORS : A. F. WILLS (CHAIRMAN). R. DODD. C.… | ||
| scan0079 | Preface and test conclusions for the Wills Patent Pressure Filled Joint Ring, with compression load graphs for copper and monel metal rings. | ||
| View original record | PREFACE. THE general interest aroused by the WILLS PATENT PRESSURE FILLED JOINT RING is definitely indicated by the number of daily enquiries as to its suitability for various purposes. The following… | ||
| scan0080 | Test results and historical information on the Wills Patent Pressure Filled Joint Ring. | ||
| View original record | TABLE 2. RESULTS OF TESTS. No. Eng. Dept. Test Mark. | Axial Load. Tons. | Axial Thickness. | Internal Pressure. Tons/sq. in. | Result. ---|---|---|---|--- GOQ 1 | 7·75 | 5/32 | 0·65 = 1456 lbs. |… | ||
| scan0081 | The compression and internal pressure testing of three Monel metal rings. | ||
| View original record | THREE MONEL METAL RINGS WERE TESTED AS DESCRIBED BELOW: Two of the rings were tested as described in our report (Ref. No. Eng. Dept. /GPF /CJ, Oct. 12th, 1932). They were placed between two plane… | ||
| scan0082 | Steam jointing materials with diagrams of a joint blowing-out apparatus and an application of a pressure-filled joint ring. | ||
| View original record | THE NATIONAL PHYSICAL LABORATORY TEDDINGTON Leads. THE NATIONAL PHYSICAL LABORATORY, TEDDINGTON REPORT ON STEAM JOINTING MATERIALS SENT FOR TEST BY Messrs. Wills Pressure Filled Joint Ring Limited. To… | ||
| scan0083 | The blowing out test of Wills Pressure Filled Joint Rings, with details of a test piece from the British Industries Fair. | ||
| View original record | Page 6: [Image of a pressure gauge and test piece] Text on image: 14,000 Lbs. Per Sq. Inch NOTE THE PRESSURE STEEL-TUBE Budenberg Gauge Co. Ltd. Broadheath, nr. Manchester This TEST PIECE is fitted… | ||
| scan0084 | National Physical Laboratory report on compression and blowing out tests for Wills Pressure Filled Joint Rings. | ||
| View original record | NATIONAL PHYSICAL LABORATORY. Report on tests of Joint Rings submitted by MESSRS. WILLS PRESSURE FILLED JOINT RING, LIMITED. COMPRESSION TEST. CHANGE IN EXTERNAL DIMENSIONS. N.P.L. Eng. Dept. Test… | ||
| scan0085 | Instructions and diagrams for fitting various types of permanent and semi-permanent joint assemblies and rings for piping. | ||
| View original record | Further in this connection, when using the joints between plain flanges, should a joint in a line of piping require replacement, it is only necessary to remove a sufficient number of bolts to allow… | ||
| scan0086 | Fitting instructions and technical details for 'Wills' pressure-filled joint rings. | ||
| View original record | JOINTING PROBLEMS. With the higher pressures which are constantly being used in the modern design of internal combustion engines, steam engines and their auxiliaries, jointing problems of the first… | ||
| scan0087 | The applications of a patent pressure-filled joint ring and a patent renewable seat wheel valve. | ||
| View original record | JOINTING APPLICATIONS. Amongst jointing applications in which the PATENT PRESSURE FILLED JOINT RING is being successfully used are the following:— DIESEL CYLINDER HEADS and OIL COOLED PISTON HEADS.… | ||
| scan0088 | Letter to Wills Pressure Filled Joint Ring Ltd. enclosing a blueprint for a Bentley Cylinder Head Gasket and requesting pressure rings for testing. | ||
| View original record | X219 Exptl: Dept. Hs/Bwg.13/KW. 30th July, 1934. Messrs. Wills Pressure Filled Joint Ring Ltd., Salmon Parade, Bridgewater. Attention of Mr. P. Wills. Dear Sirs, We thank you for your letter… | ||
| scan0089 | Letter from Wills Pressure Filled Joint Ring, Ltd. regarding the production of joint rings and gaskets for a Bentley cylinder head. | ||
| View original record | WILLS PRESSURE FILLED JOINT RING, LIMITED, SALMON PARADE, BRIDGWATER. TELEPHONES: BRIDGWATER 241 & 242. (PRIVATE BRANCH EXCHANGE) TELEGRAMS: WILLS, PHONE, BRIDGWATER. DIRECTORS: A. F. WILLS (CHAIRMAN)… | ||
| scan0090 | Letter to Wills Pressure Filled Joint Ring, Ltd. requesting the cost of a Copper Gasket with rings. | ||
| View original record | x219 Exptl. Dept. He/Bwg. 8/KW. 2nd August, 1934. Wills Pressure Filled Joint Ring, Ltd., Salmon Parade, Bridgwater. Attention of Mr. P. Wills. Dear Sirs, We thank you for your letter PW/JAH. 31.7.34,… | ||
| scan0091 | Letter from Wills Pressure Filled Joint Ring, Ltd. regarding the supply of patent pressure filled copper gaskets. | ||
| View original record | WILLS PRESSURE FILLED JOINT RING, LIMITED, SALMON PARADE, BRIDGWATER. TELEPHONES: BRIDGWATER 241 & 242. (PRIVATE BRANCH EXCHANGE) TELEGRAMS: WILLS, PHONE, BRIDGWATER. DIRECTORS: A. F. WILLS (CHAIRMAN)… | ||
| scan0092 | Internal order request for one patent copper gasket from Wills Pressure Filled Joint Ring Ltd. | ||
| View original record | X219 Order Office. c. to Roy. Hs/FD.15/KW.27.8.34. Will you please order one Patent copper gasket, using Patent Pressure Filled Joint Rings, to the blue print already supplied, from - Wills Pressure… | ||
| scan0093 | Letter from a supplier regarding gaskets for experimental purposes and customer feedback. | ||
| View original record | WILLS PRESSURE FILLED JOINT RING, LIMITED, SALMON PARADE, BRIDGWATER. TELEPHONES: BRIDGWATER 241 & 242. (PRIVATE BRANCH EXCHANGE.) TELEGRAMS: WILLS, PHONE, BRIDGWATER. DIRECTORS: A. F. WILLS… | ||
| scan0094 | Use of a higher compression head on a stream-lined Bentley. | ||
| View original record | Rm x 219 ? To Hs. from Sg. Copy to Wor.E.Bn. Bentley. Sg8/E24.9.34 Thanks for Hs.3/MJ.22.9.34 which gives me the information required. I had not previously in mind that, when I drove the stream-lined… | ||
| scan0095 | Request to modify connecting rods and big end bearings for extra cylinder lubrication tests. | ||
| View original record | x219- To RHC. Hs/Mths.21/KW.25.9.34. Unit for Extra Cylinder Lubrication Tests. Will you please modify the Connecting Rods and Connecting Rod Big End Bearings (top half) to the attached drawings, B.V.… | ||
| scan0096 | Use of higher compression heads on Bentley engines and the development of a suction control scheme for ignition advance. | ||
| View original record | x219 w/s. To Sg. from E. c. Mr. Hs. re Bentley. Referring to Sg.8/E.24.9.34 and previous correspondence concerning the use of higher compression heads on Bentleys, we are developing a scheme for using… | ||
| scan0097 | Confirming receipt of an invoice from Messrs. Wills for a special gasket. | ||
| View original record | x219 To G/Cam. Hs/Bwg.5/KW.1.10.34. Attached please find invoice from Messrs. Wills for special Gasket, which we have received intact. Hs/J.Bowering. | ||
| scan0098 | Letter to Wills Pressure Filled Joint Rings Ltd. concerning a special gasket for a Bentley cylinder head. | ||
| View original record | x219 Exptl. Dept. Hs/Bwg.6/KW. 1st October, 1934. Messrs. Wills Pressure Filled Joint Rings Ltd., Salmon Parade, Bridgwater. Dear Sirs, We are in receipt of the special Gasket which you made for the… | ||
| scan0099 | Letter from Wills Pressure Filled Joint Ring, Ltd. regarding the use and pressure holding capabilities of their joint rings. | ||
| View original record | WILLS PRESSURE FILLED JOINT RING, LIMITED, SALMON PARADE, BRIDGWATER. TELEPHONES: BRIDGWATER 241 & 242. (PRIVATE BRANCH EXCHANGE) TELEGRAMS: WILLS, PHONE, BRIDGWATER. DIRECTORS: A. F. WILLS (CHAIRMAN)… | ||
| scan0100 | Modification of a Bentley Cylinder Head to fit a B-6 Unit. | ||
| View original record | To RHC. x219 Hs/Mths.7/KW.20.10.34. Bentley Cylinder Head. We are sending into the shop a cylinder which we would like fitting to B-6 Unit. This head has double valve springs fitted at present and we… | ||
| scan0101 | Request to replace inlet valves in high compression Bentley cylinder heads. | ||
| View original record | X219 To RHC. Hs/Mths;29/KW.25.10.34. High Compression Bentley Cylinder Heads. Will you please replace the 1.500 dia. inlet valves in the 7.75:1 comp. ratio cast iron heads, these valves are at present… | ||
| scan0102 | Experiments on extra cylinder lubrication to prevent piston seizure during cold starts on Bentley engines. | ||
| View original record | X219 To E. c. to HS. c. to Wor. c. to Hy. c. to Da. c. to Hn. c. to Mx. Extra Cylinder Lubrication when starting from cold. These experiments were started owing to the several cases of piston seizure… | ||
| scan0103 | Scheme for extra cylinder lubrication during cold starts to prevent piston seizure. | ||
| View original record | HE/Rths.15/KW. 2.11.34. Extra Cylinder Lubrication when starting from cold. The intention of this scheme is to provide a means whereby a supply of oil can be delivered to the cylinder wall when the… | ||
| scan0104 | Lubrication tests for a modified big end bearing and connecting rod. | ||
| View original record | -2- We then cut a groove in the big end bearing (see H.V.52) in order that a more consistent supply of oil could be obtained and with this modification and having a .031" diameter jet in the side of… | ||
| scan0105 | Oil consumption tests on a Bentley unit with and without modifications to the connecting rods. | ||
| View original record | -3- With the engine standard in every way before modification to the connecting rods we obtained an oil consumption of 1.975 pints/hour at 4000 r.p.m. on a Bentley unit. With the rods modified the oil… | ||
| scan0106 | Blueprint for a modification to the No. 6 connecting rod. | ||
| View original record | B.V. 28. 1 HOLE DRILL .075 DIA ALL OTHER DIMENSIONS SEE E55608/9 45° 1.400 COUNTER BORE .1875 DIA .100 DEEP SECTION 'AA' LOOKING FROM FRONT OF ENGINE MODIFICATION TO No6 CONNECTING ROD (20/25) | ||
| scan0107 | Blueprint for a modification to a connecting rod (Con-Rod). | ||
| View original record | B.V.51 2.700 CTRS. OFF SIDE OF ENGINE 1 HOLE DRILL .031 DIA. NEAR SIDE OF ENGINE ALL OTHER DIMENSIONS SEE E.B.1603/4 SCALE 1/1 MODIFICATION TO E.B.1603/4 CON-ROD R.Allen 24-9-21 | ||
| scan0108 | Blueprint showing a modification to the top half of a big end bearing. | ||
| View original record | B.V.52. OFF SIDE 22 1/2° .020. .156 NEAR SIDE ALL OTHER DIMENSIONS SEE E 55613 SCALE 2/1 MODIFICATION TO TOP HALF - BIG END BEARING R.M. 25.9.42 | ||
| scan0109 | Request to expedite testing on a new type of Bentley cylinder head before it enters production. | ||
| View original record | x219 To RHC. HS/CTS.16/KW.14.11.34. Bentley Cyl. Head. We are anxious to get on test, one of the new type cylinder head, which it is proposed to put into production, i.e., 1OP. EB.2041. Will you… | ||
| scan0110 | Request to order 12 Bentley cylinder head gaskets from The Southwark Manufacturing Co. | ||
| View original record | To Roy. x219 Hs/CTS.6/KW.5.12.34. Will you please order from The Southwark Manufacturing Co., Nelson Passage, High Street, Birmingham - 12. Cylinder Head Gaskets (Bentley) to E.B.308. Hs/C.T.Salt. | ||
| scan0111 | Request to produce a modified set of exhaust valves for a Bentley cylinder head test. | ||
| View original record | x219 RHC. From Hs/CTS. Hs/CTS.8/MA.1.1.35. BENTLEY CYLINDER HEAD. In conjunction with the tests we are carrying out on the bed, will you please produce 1 set (6 off) of exhaust valves to Ex.15604… | ||
| scan0112 | Instructing a change in exhaust valve diameter for a Bentley competition cylinder head. | ||
| View original record | 4219 To RHC. Hs/CTS.23/KW.2.1.35. Competition Cyl. Head (Bentley). With reference to our memo. Hs/Rm.2/KW.4.12.34. To bring this head into line with our present experiments, will you please fit 1.300… | ||
| scan0113 | Five specific tasks related to car cylinder heads. | ||
| View original record | To RHC. 4219 Hs/Rm.12/KW.15.1.35. Car Cylinder Heads. We know there has been a bit of congestion in the cylinder head section owing to pressure of aero work lately, but we have one or two jobs we… | ||
| scan0114 | Urgent work required on car cylinder heads and associated components. | ||
| View original record | +219 To RHC. Hs/Rm.4/KW.17.1.35. Car Cylinder Heads. We know there has been a bit of congestion in the cylinder head section owing to pressure of aero work lately, but we have one or two jobs we… | ||
| scan0115 | Material choice and design for the Bentley Silent Tappet Head. | ||
| View original record | X219 To E. c. to By. Hs/Std.18/KW. 21.1.35. Bentley Silent Tappet Head. In connection with the head for Bentley automatic tappets, we should of course prefer this to be in aluminium from weight… | ||
| scan0116 | Follow-up letter from Wills Pressure Filled Joint Ring, Limited regarding gasket testing and potential orders. | ||
| View original record | WILLS PRESSURE FILLED JOINT RING, LIMITED, SALMON PARADE, BRIDGWATER. TELEPHONES: BRIDGWATER 241 & 242. (PRIVATE BRANCH EXCHANGE) TELEGRAMS: WILLS, PHONE, BRIDGWATER. DIRECTORS: A. F. WILLS (CHAIRMAN)… | ||
| scan0117 | Testing and potential customer offering of a new high compression head for Bentley cars. | ||
| View original record | NOT SENT OUT To Sg. & Wor. c. to E. c. to By. X214 Hs/Rm.1/KW.4.2.35. High Compression Head for the Bentley. We have now completed a test of the high compression head to EB.2050 on the test bed. It… | ||
| scan0118 | Graph showing the power output of a 3 1/2 Litre Bentley B.4 Unit engine under two different test configurations. | ||
| View original record | 3 1/2 LITRE BENTLEY POWER OUTPUT B.4 UNIT. SPEC'N: CP.2 (3C/F1-39) RHC CP.6 (BC/F1-39) ① COMP. RATIO 6.45:1 (EB 6/5) IN. VALVE 1.400 DIA. EX. " 1.300 " AEROLITE PISTONS (G4) STD. CYL. BLOCK +.002 STD.… | ||
| scan0119 | Design recommendations for a Bentley high-compression cylinder head. | ||
| View original record | x219 To By. Hs/Rm.27/KW.7.2.35. High Compression Head for the Bentley. We have run EB.2050 and it has given satisfactory results but we are apprehensive that we may get failure between the valves, as… | ||
| scan0120 | The failure of a Bentley high compression cylinder head (EX.16041) and proposed modifications for a new casting. | ||
| View original record | To RHC. c. to CTS. X219 Hs/Rm.25/KW.7.2.35. High Compression Cylinder Head for Bentley Competition Work. EX.16041. We have had a failure on the head to this. This is unfortunate as we were relying on… | ||
| scan0121 | Letter from Wills Pressure Filled Joint Ring, Ltd. following up on a visit and discussing designs for exhaust and inlet joint rings. | ||
| View original record | WILLS PRESSURE FILLED JOINT RING, LIMITED, SALMON PARADE, BRIDGWATER. TELEPHONES: BRIDGWATER 241 & 242. (PRIVATE BRANCH EXCHANGE.) TELEGRAMS: WILLS, PHONE, BRIDGWATER. DIRECTORS: A. F. WILLS… | ||
| scan0122 | Letter to Wills Pressure Filled Joint Rings Ltd. requesting the manufacture of 6 Patent Ring Joints for a Bentley exhaust manifold. | ||
| View original record | Exptl. Dept. Hs/Bwg.1/KW. 11th February, 1935. Messrs. Wills Pressure Filled Joint Rings Ltd., Salmon Parade, Bridgwater. For the attention of MR. P. Wills. Dear Sirs, Referring to your two letters… | ||
| scan0123 | Letter from Wills Pressure Filled Joint Ring confirming an order for six rings from drawing EB.115. | ||
| View original record | x219 WILLS PRESSURE FILLED JOINT RING, LIMITED, SALMON PARADE, BRIDGWATER. TELEPHONES: BRIDGWATER 241 & 242. (PRIVATE BRANCH EXCHANGE.) TELEGRAMS: WILLS, PHONE, BRIDGWATER. DIRECTORS: A. F. WILLS… | ||
| scan0124 | Request to modify a Bentley Cylinder Head to accept larger exhaust valves. | ||
| View original record | To RHC. +19 Hs/Mths.4/KW.19.2.35. Bentley Cylinder Head to LeC.3662. We should like a Cylinder Head to LeC.3662 modified to take 1.300 dia. exhaust valves. The valves at present fitted are 1.200 dia.… | ||
| scan0125 | The advantages and modifications for the Bentley Close Centres Cylinder Head. | ||
| View original record | To BG. & Wor. c. to R. c. to By. c. to LB/wd. c. to Bn. Xn19 Hs/Rm,11/KW,20.2.35. Bentley Close Centres Cylinder Head. Attached is a report on the advantage gained from incorporating the information… | ||
| scan0126 | Comparison of cylinder heads EB.2050 and Lec.3662, detailing performance and detonation characteristics. | ||
| View original record | To Sg. & Wox. c. to A. c. to By. c. to Hs/wd. c. to En. Comparison of Cylinder Heads. The cylinder heads compared in this report are EB.2050, having close centre valves, and Lec.3662, having valves… | ||
| scan0127 | Report comparing two cylinder heads (EB.2050 and Lec.3662) based on performance tests and weight. | ||
| View original record | -2- Hs/Mths.12/KW.20.2.35. To avoid detonation at the low speeds the ignition has to be retarded an appreciable amount, and at 1500 r.p.m. and 2000 r.p.m. the ignition has to be retarded slightly more… | ||
| scan0128 | Graph comparing the performance of three different Bentley cylinder head configurations against engine RPM. | ||
| View original record | COMPARISON OF CYLINDER HEADS. (BENTLEY) B.V. 73 UNIT B2 SPECIFICATION R.H.C./C.P 7/E P AEROLITE PISTONS H.1 (17.0 OZS.) ① CYLINDER HEAD E.B. 2050 (CLOSE CENTRE VALVES) COMPRESSION RATIO:- 7.0:1 INLET… | ||
| scan0129 | Performance comparison graph for two different Bentley cylinder heads. | ||
| View original record | COMPARISON OF CYLINDER HEADS (BENTLEY) B.V 74 B2 UNIT SPECIFICATION RHC/CP 7/EP 80 11 33 ① CYLINDER HEAD E.B 2050 ② CYLINDER HEAD L.E C 3662 ALL OTHER PARTICULARS, SEE CURVE B.V 73 B.M.E.P. AVOIDING… | ||
| scan0130 | Testing and standardisation of a new high compression head for the Bentley. | ||
| View original record | To E. from Hs/Rm. c. to By. +219 Hs/Rm.6/KW. 21.2.35. Standardisation of High Compression Head for the Bentley. ------------------------ We have now completed our tests on the cylinder head to… | ||
| scan0131 | Investigation and design options for Bentley High Compression Heads. | ||
| View original record | Handwritten: End of Aug. 25-TH xN9 Swift. 10/9/34. Typed: To Hs/Rm. from E. E.1/HP.23.2.35. c. Sg. Wor. By. Hs/Mths. Bentley High Compression Heads. Referring to Hs/Rm.11/KW.20.2.35 and Hs/Rm.6/KW.… | ||
| scan0132 | Cylinder head EB.2050 detailing service failure risks and standardization decisions. | ||
| View original record | - 2 - E.1/HP.23.2.35. EB.2050 cylinder head itself in addition has certain features involving risk of failure in service, as follows:- (1) The thickness of metal between the valve seats which we have… | ||
| scan0133 | Design options and modifications for Bentley High Compression Heads. | ||
| View original record | +Wq To Hs/Rm. from E. c. Sg. Wor. By. Hs/Mths. Bentley High Compression Heads. Referring to Hs/Rm.11/KW.20.2.35 and Hs/Rm.6/KW. 21.2.35, we have now thoroughly investigated the position with respect… | ||
| scan0134 | Design flaws and modifications related to the EB.2050 cylinder head. | ||
| View original record | - 2 - E.1/HP.23.2.35. ---------------- EB.2050 cylinder head itself in addition has certain features involving risk of failure in service, as follows:- (1) The thickness of metal between the valve… | ||
| scan0135 | The delay in processing the standardisation sheet for Bentley High Compression Heads. | ||
| View original record | To Wor. from Hs/Rm. c. to E. c. to By. c. to Sft. 4219 Hs/Rm.1/KW.27.2.35. Bentley High Compression Heads. We think that this is another example where circulating the Standardisation Sheet has taken… | ||
| scan0136 | Standardisation of a cast iron cylinder head machined to Hs.1372 for improved performance. | ||
| View original record | RR 755BN (SH) (57312, 29-12-33) BM. 3/640/2 COMPLETED 1.3.35. BENTLEY STANDARDISATION OF PARTS. Description of Parts. CYLINDER HEAD IN CAST IRON AND MACHINED TO Hs.1372. Origin. To give improved… | ||
| scan0137 | Estimated cost for extra jigs, tools, and equipment. | ||
| View original record | STANDARDISATION OF PARTS S/A/D 30/11/35 Est. cost of extra jigs, tools and equipment (Sft/Ws.30.11.34)£229.0.0. [Illegible handwritten signatures] | ||
| scan0138 | Request to modify a Bentley Cylinder Head to restore original combustion space capacity. | ||
| View original record | To RHC. x219 Hs/Mths.4/KW.5.3.35. Bentley Cylinder Head to LeC.3662. Will you please modify the trepanning round the inlet valves of this head to EX.16041. The head will require machining in the face… | ||
| scan0139 | Instructions for modifications to a LeC.3662 Cylinder Head, including stelliting exhaust valves. | ||
| View original record | To RHC. 4219 Hs/Mths.16/KW.11.3.35. LeC.3662 Cylinder Head. Will you please stellite three of the exhaust valves of this head. This head is the same one that was recently modified to take 1.300 dia.… | ||
| scan0140 | Standardisation and modification of Bentley cylinder heads to increase horsepower. | ||
| View original record | x219 To Sg. & WOF. c. to K. c. to Ey. c. to Hs/Wd. c. to Bn. Hs/Rm.3/KW.11.3.35. Bentley Cylinder Heads. It will be remembered that it was decided to standardise the cylinder head on which the rocker… | ||
| scan0141 | Modifications to Bentley cylinder heads to increase power output and the results of related tests. | ||
| View original record | 7219 To Sg. & Wor. c. to E. c. to By. c. to Hs/Md. c. to Bn. Hs/Mths.3/KW.9.3.35. Bentley Cylinder Heads. Further to the report "Comparison of Cylinder Heads, circulated 20.2.35. we have now increased… | ||
| scan0142 | Graph comparing the maximum ignition advance to avoid detonation for a cylinder head before and after modification. | ||
| View original record | COMPARISON OF CYLINDER HEADS B.V.79 UNIT:- B2 SPECIFICATION:- R.H.C./C.P. 7/E.P. 31-1-35 FULL LINE REPRESENTS CYL. HEAD LEC 3562 BEFORE MODIFICATION DOTTED LINE " " " AFTER MODIFICATION Ex16041 ALL… | ||
| scan0143 | Graph comparing the performance of different Bentley cylinder head configurations. | ||
| View original record | B.V. 78. COMPARISON OF CYLINDER HEADS (BENTLEY) UNIT:- B2 SPECIFICATION:- R.H.C/C.P. 7/E.P. 30-1-35 AEROLITE PISTONS H.1 (17.0 ozs.) ① CYLINDER HEAD E.B. 2050, 7.0:1 COMP. RATIO 1.500 DIA INLET… | ||
| scan0144 | Blueprint sketch showing modifications to a cylinder head to improve power output. | ||
| View original record | B.V. 80 1.800 1.750 .825 RAD. .075 .960 1.500 DIA. INLET VALVE 1.300 DIA. EXHAUST VALVE SKETCH SHOWING MODIFICATIONS CARRIED OUT TO IMPROVE POWER OUTPUT OF CYLINDER HEAD TO LEC 3662 R.H.u 15.3.35 | ||
| scan0145 | Blueprint detailing a modification to a cylinder head component with various dimensions. | ||
| View original record | DRILL .5469 DIA. REAM .600 DIA LARGE END OF TAPER SLEEVE EX16077 WASHER EX16216 THIS MODN IS REQUIRED BETWEEN NOS 2 AND 3 CYLINDERS AND BETWEEN NOS 4 AND 5 CYLINDERS TAPER 1 IN 20 ON DIA. SPOTFACE… | ||
| scan0146 | Sketch showing the modification of E.B.615 cores to suit the LEC 3662 cylinder head. | ||
| View original record | B.V.83. FULL LINE DRAWING REPRESENTS LEC 3662 CYLINDER HEAD FLOOR & BEADING RAISED .150 FROM STANDARD EB 615 CROSS HATCHED SHADED PORTIONS SHOW HOW CORES REQUIRE MODIFYING FROM STANDARD TO SUIT LEC… | ||
| scan0147 | Drawing of a modified high-compression cylinder head. | ||
| View original record | Note. DOWEL HOLES TO BE AS ON EB GIS IE NOT ELONGATED. THIS SECTION INCR. TO .275 EXCEPT FOR LOCAL POCKETS REMAINING .175 ADJACENT TO S. PLUG BOSSES. EXHAUST INLET SPARE PLUG DRILLING IS ALTERED BUT… | ||
| scan0148 | Additional requirement for a new set of push rods for Mr. R. Summers' Car, Chassis B-169-CW. | ||
| View original record | W/S - H. V219 + nota Hs/Rn.23/KW.21.3.35. Mr. R. Summers' Car, Chassis B-169-CW. Further to Hs/Rn.19/KW.19.3.35, we find that in addition to the parts mentioned we are likely to require a new set of… | ||
| scan0149 | Requesting an order for modified nickel cylinder head gaskets for an experimental engine. | ||
| View original record | To Roy. x49 Hs/Rm.11/KW.30.3.35. Nickel Gaskets for Experimental Engine. Will you please order from the Southwark Manufacturing Co., Nelson Passage, High Street, Birmingham - 3. Cylinder Head Gaskets… | ||
| scan0150 | Causes and potential solutions for piston seizures on Bentley cars. | ||
| View original record | 4219 To ag. & WOP. c. to E. c. to BY. c. to Da. c. to Rn. c. to MX. c. to Hd. Piston Seizures on the Bentley. We have now had about a dozen cases of piston seizure on the Bentley in customers' hands.… | ||
| scan0151 | Blueprint showing a modification to a con-rod, detailing the drilling of a hole. | ||
| View original record | ROLLS-ROYCE, LTD PRINT ROOM 4 APR 1935 DERBY. B.V.51 2.700 CTRS. OFF SIDE OF ENGINE 1 HOLE DRILL .031 DIA. NEAR SIDE OF ENGINE ALL OTHER DIMENSIONS SEE E.B.1603/4 SCALE 1/1 MODIFICATION TO E.B.1603/4… | ||
| scan0152 | Requesting the fitting of an additional flange to the cylinder head of a B-23-AE engine unit. | ||
| View original record | To RHC. X219 Hs/Wym.11/KW.6.4.35. Bentley Rocker Cover. Will you please fit an additional flange to the cylinder head of B-23-AE engine unit as per sketch. This flange is intended to carry a second… | ||
| scan0153 | Blueprint for an additional flange for a 2nd rocker cover for a Bentley. | ||
| View original record | [ "ADDITIONAL FLANGE FOR 2 ND ROCKER COVER - BENTLEY.", ".375"", ".375", "G.H. WHYMAN." ], | ||
| scan0154 | Piston seizures on the Bentley 3/25 model. | ||
| View original record | To Eg. from Ha/Ma. c. to COR. c. to R. c. to Hy. c. to Du. c. to Dn. c. to Ex. c. to Hd. x~19 Ha/Ma. S/KE.11.4.35. Piston Seizures on the Bentley. Replying to Eg.C/L.10.4.35. -n x236 Since piston… | ||
| scan0155 | Following up on an order for heads for chassis B-11-EN, belonging to Mr. C.R. Fairey. | ||
| View original record | To R.C. X 219 Hs/Rm.9/KW.12.4.35. Chassis B-11-EN. Mr. C.R. Fairey. Attached is a copy of a note from Hd. You will recollect that we asked you to put some of these heads in hand. Can you give Hd. any… | ||
| scan0156 | Instructions to prepare a high compression cylinder head for chassis B-11-BN for Mr. C.R. Fairey. | ||
| View original record | COPY. To Hs. c. to Wor: Hd/WW.18/MW.11.4.35. Re Chassis B-11-BN. Mr. C.R. Fairey. Instructions have been received from Sg. to prepare a high compression cylinder head complete for the above-mentioned… | ||
| scan0157 | Instructions to fit high compression cylinder heads on three specific Bentley chassis. | ||
| View original record | BY. SPY. Rm. EWP/Skn. x219 D/EP8/OG13-4-35. Re: High Compression cylinder heads on Bentley chassis. --------------------------- Further to D/BP4/OG11-4-35 in which we refer to our instructions to fit… | ||
| scan0158 | Controversy over increased maximum speed from a high compression cylinder head on a Bentley. | ||
| View original record | x219 To Lp. Hs/Rm.16/KW.15.4.35. High Compression Cylinder Head - Bentley. Some controversy has arisen as to the increase in maximum speed, if any, to be obtained from the high compression head. You… | ||
| scan0159 | And evaluating different schemes for lubricating engine cylinder walls. | ||
| View original record | To By. X219 Hs/Rm.5/KW.15.4.35. Lubrication of Cylinder Walls. - ret'd to By With reference to By/NW.1/VL.1.4.35. This suggestion has been tried in various forms before. S.U's have a patent whereby… | ||
| scan0160 | Acknowledging a request regarding a high compression cylinder head for a Bentley. | ||
| View original record | S/W. To Hs/Rm. from Lp. X219 Lp.5/LAM.26.4.35. Re: HIGH COMPRESSION CYLINDER HEAD - BENTLEY. Thank you for the above. I will get the results you require as soon as possible. Lp. | ||
| scan0161 | Costs and considerations for fitting high compression cylinder heads, Aerolite pistons, and lead bronze bearings to Bentley cars. | ||
| View original record | W/P - Sr. x19 Hs/Rm.14/KW.18.4.35. High Compression Cylinder Heads - Bentley. --------------------------------------- Replying to Sr2/Crn.16.4.35. A short time ago I got some figures out for fitting… | ||
| scan0162 | The production timeline for high compression cylinder heads on specific Bentley chassis. | ||
| View original record | D/BP. c. BY. c. EHH/EHSn. c. Rm. +219 Sft/JMW.14/MW.18.4.35. Re. High Compression Cylinder Heads on Bentley Chassis. With reference to memo. D/BP8/OG.13.4.35. and BY/Cgh10/G.15.4.35. in regard to the… | ||
| scan0163 | Cylinder head capacity of a 3.5' bore Bentley engine and modifications needed for use on a 20/25 model. | ||
| View original record | x19 To RHC. Hs/Rn.12/KW. 25.4.35. 3 1/2" Bore Unit - Bentley. --------------------------- We understand that the capacity of the head prepared for the 3 1/2" bore engine on the Bentley is 109 c.c's.… | ||
| scan0164 | Standardisation of parts for an oil feed to the cylinder wall from the connecting rod. | ||
| View original record | COMPLETED 16.5.35. RR 755B (5H) (69654. 19-9-34) BM 3/1832/5 BENTLEY STANDARDISATION of PARTS. Date 5.4.35. 7-5-35 X No. 219. Drawing No. Part List Description of Parts. OIL FEED TO CYLINDER WALL FROM… | ||
| scan0165 | Estimated cost for extra jigs, tools, and equipment for the 'E' series chassis. | ||
| View original record | Est. cost of extra jigs, toolsand equipment (Sft/Ws.17.4.35)£5.0.0. Could be brought on to production at 1st chassis in "E" series, (Sft/GH.17.4.35) without scrap. | ||
| scan0166 | Requesting an order for three similar C. & A. gaskets for a 20/25 3 1/4' bore engine. | ||
| View original record | To Roy. +219 Hs/Rm.34/KW.29.5.35. C. & A. Gaskets for 3 1/4" Bore Engine. Referring to Hs/Rm.11/KW.30.3.35, you will remember that you succeeded in getting 3 C. & A. gaskets for us to EB.308, with a… | ||
| scan0167 | Promotional letter from Henry Wiggin & Company regarding the benefits and testimonials for their Cupro-Nickel gaskets. | ||
| View original record | COMMENTS OF CAR MANUFACTURERS. " We have carried out experiments with the corrugated gaskets, and have found certain very definite benefits from the use of this type." " With reference to the sample '… | ||
| scan0168 | Informational leaflet from Henry Wiggin & Company Ltd. about their Cupro-Nickel Corrugated Gaskets. | ||
| View original record | inconvenience which a failure may cause. The illustrations show typical Cupro-Nickel Corrugated Gaskets, made by The Corrugated Packing & Sheet Metal Co., Gateshead-on-Tyne. Enquiries for these… | ||
| scan0169 | Variations in cylinder head volumes on Bentley engines and the effect on compression and detonation. | ||
| View original record | To Sft. c. to E. c. to By. x19 Hs/Rm.16/KW.6.8.35. We have been checking over some cylinder head volumes on Bentleys. Attached is a copy of some of the figures we have obtained. You will see that in… | ||
| scan0170 | The capacities of combustion chambers for B.5 and Y.4B.B units. | ||
| View original record | 31.7.35. Capacities of Combustion Chambers on B.5 and Y.4B.B Units. Ex. B.5 Cylinder Head now fitted on Y.4B.B No. 1. 99 c.cs. No. 2. 102 " No. 3. 101.6 " No. 4. 102.4 " No. 5. 103.2 " No. 6. 98.4 "… | ||
| scan0171 | Confirmation of a request to modify a large bore Bentley cylinder head drawing to increase the compression ratio. | ||
| View original record | X-219 To By/Cgh. c. to E/MCS. Hs/Gry.4/KW.16.8.35. This is to confirm our asking BY/CS. yesterday to modify the drawing of the large bore Bentley cylinder head in accordance with the marked up blue… | ||
| scan0172 | Requesting the modification of cylinder head E.B.615 to drawing number Hs.2118. | ||
| View original record | X219 To RHC. Hs/Ed.9/KW.10.9.35. We are sending a cylinder head, E.B.615, into the shop. Will you please modify this to Hs.2118. Hs/J.L.Edwards. | ||
| scan0173 | Response to a request to increase the inlet port area on a Large Bore Bentley Cylinder Head. | ||
| View original record | Rm xuq Hs/Rm. from E/JNR. E/JNR.1/HP.17.9.35. c. Hs/Gry. re Large Bore Bentley Cylinder Head. In regard to the request made by Hs/Gry. to increase the area of the inlet ports adjacent to the valve… | ||
| scan0174 | Request to modify the Large Bore Bentley Cylinder Head, recommending the use of the original design. | ||
| View original record | X219 Hs/Rm. from E/JNR. E/JNR.1/HP.17.9.35. c. Hs/Gry. re Large Bore Bentley Cylinder Head. In regard to the request made by Hs/Gry. to increase the area of the inlet ports adjacent to the valve… | ||
| scan0175 | New drawing for a Large Bore Bentley Cylinder rocker cover. | ||
| View original record | X219 c. Hs/Gry. BY/CS1/EH.27.9.35. Re Large Bore Bentley Cylinder - Section 5050. Lec.4538. Further to our memo' BY/CS3/EH.8.8.35., please receive herewith blue prints of the following new drawing,… | ||
| scan0176 | Request to order six C. & A. gaskets for a large bore Bentley engine with non-standard stud centres. | ||
| View original record | To Roy. X219. Hs/Std.5/KW.14.10.35. Will you please order 6. C. & A. gaskets to Ex.18396 for us for use on the large bore Bentley engine. This engine has different stud centres from standard, so that… | ||
| scan0177 | New drawings and part replacements for the Large Bore Bentley cylinder, valves, and fittings. | ||
| View original record | TO RMC. [Struck through] c. Hs/Gry. BY/CS3/EH.23.10.35. Re Large Bore Bentley - Cylinder - Sec;5050. Valves & Fittings - Sec;5060. LeC.4720 - Larger Valve Stems (Memo' BY/SS3/N.1.10.35). Please… | ||
| scan0178 | Specifications for machining a Large Bore Bentley cylinder head to achieve a 6.4/1 compression ratio. | ||
| View original record | To By. X219 Hs/Smth.24/KW.14.11.35. Large Bore Bentley. When the head Ex.18392 is machined to give 6.4/1 C.R. (119 c.c. capacity), the depth of the combustion chamber from the ceiling to the joint… | ||
| scan0179 | Request for a larger bore Bentley cylinder block and head for comparison purposes. | ||
| View original record | To RHC. X219 Hs/Mths.11/KW.20.11.35. We should like a larger bore Bentley cylinder block and head in order to compare large and small bore units. Both cylinder block and head should have standard stud… | ||
| scan0180 | Listing new drawings and parts for a Large Bore Bentley Chassis Cylinder, explaining the reason for a delay in their formal issue. | ||
| View original record | To M.M.C. c. Hs/Gry. BY/CS23/EH.26.11.35. Re Large Bore Bentley Chassis - Cylinder - Sec;5050. Please receive herewith the following new L.O.P. and details, to be instructed up as required. E.B.2715… | ||
| scan0181 | Request for three Bentley cylinder blocks to be honed to new dimensions for piston clearance tests. | ||
| View original record | <219 To RHC. Hs/Mths.4/KW.18.12.35. Bentley Cylinder Blocks. We should like three Cylinder Blocks that have been removed from 3 1/4" bore engines when converted to large bore units honing to the… | ||
| scan0182 | Confirming an alteration to drawing EB.2560 for the 3.500 Bore Bentley Head. | ||
| View original record | X219 To By. Hs/Smth.1/KW.23.12.35. 3.500 Bore Bentley Head. Confirming our memo. Hs/Smth.24/KW.14.11.35, the drawing EB.2560 should be altered to have a combustion chamber depth of 1.150, not 1.025.… | ||
| scan0183 | Test for cylinder distortion and running an engine without water between the bores to increase displacement. | ||
| View original record | X219 To RHC. Hs/Rm.6/KW.13.1.36. Cylinder Distortion and Water Between the Bores. We want to carry out a test to see whether we can run satisfactorily without water between the bores, as this would… | ||
| scan0184 | Letter from Rudge-Whitworth Ltd enquiring about the chromium plating of cylinder bores. | ||
| View original record | RUDGE-WHITWORTH LTD GLH/MH. TELEPHONE 4001 TELEGRAMS RUDGE COVENTRY RUDGE WORKS COVENTRY Messrs. Rolls-Royce Ltd., DERBY. 30th. January 1936. Dear Mr. Robotham, I remember that over the luncheon table… | ||
| scan0185 | Letter from Rudge-Whitworth Ltd. regarding tests on sodium-cooled valves. | ||
| View original record | 335C. 7 Rudge-Whitworth, Ltd. Sheet No. 2. Continued Letter to Messrs. Rolls-Royce Ltd., Derby. You will, perhaps, be interested to know that we have made one or two tests of sodium cooled valves, but… | ||
| scan0186 | Letter to Rudge-Whitworth Ltd. regarding the testing of chromium cylinder bores. | ||
| View original record | X219 Exptl. Dept. Hs/Rm.3/KW. 31st January, 1936. G.L. Hack, Esq., Messrs. Rudge-Whitworth Ltd., Rudge Works, COVENTRY. Your Ref: GLH/MH.30.1.36. Dear Mr. Hack, Our experience of chromium cylinder… | ||
| scan0187 | Tests conducted after removing the turbulent lip from a 20/25 4¼ bore cylinder head Lec.5002. | ||
| View original record | To E. c. to Wor. c. to By. SECRET. X219 Hs/Rm.19/KW.20.3.36. Removal of the Turbulent Lip from the 20/25 4¼ bore Cylinder head Lec.5002. We have carried out tests removing the turbulent lip on the… | ||
| scan0188 | Ignition and detonation test results for a modified cylinder head on Engine No. B-9. | ||
| View original record | CYLINDER HEAD E.60660. Bar 757 m/m. TURBULENT LIP REMOVED (Loc.5002) WITHOUT TOUCHING PISTONS. TEST BED EXHAUST SYSTEM. ENGINE No. B-9. Ignition & Detonation Test. | R.P.M. | Load | C.Load | B.M.E.P.… | ||
| scan0189 | Ignition and detonation test data for Engine No. B-9 using Cylinder Head E.60660 and Shell No. 1 test bed exhaust system. | ||
| View original record | CYLINDER HEAD E.60660. C/R. 6 : 1. TEST BED EXHAUST SYSTEM. SHELL No. 1. ENGINE No. B-9. IGNITION & DETONATION TEST. | R.P.M. | Load | C.Load | B.H.P. | Pts/Hr. | Pts/BHP/Hr. | Ign. Adv. Max. Power |… | ||
| scan0190 | Power comparison table for an EB. 615 head fitted to a standard engine with an open exhaust. | ||
| View original record | POWER COMPARISION (Open Exhaust) EB. 615 head fitted to a standard engine | R.P.M. | B.M.E.P. | C B.H.P. | |---|---|---| | 4500 | 75.6 | 96.2 | | 4250 | 86.8 | 104.4 | | 4000 | 93.7 | 106.2 | | 3750 |… | ||
| scan0191 | Performance data table for a deturbulated Bentley cylinder head. | ||
| View original record | BENTLEY DEVELOPMENT Cylinder Head Hs. 2118 EB. 615 Deturbulated. R.P.M. | B.M.E.P. | C B.H.P. 4500 | 74.7 | 95.2 4250 | 86.7 | 104.3 4000 | 94.4 | 108.9 3750 | 101.3 | 107.7 3500 | 107.5 | 106.5 3000… | ||
| scan0192 | Data table showing detonation and ideal ignition advance for a silenced EB. 615 cylinder head. | ||
| View original record | DETONATION AND IDEAL IGNITION ADVANCE. EB. 615 Cylinder Head. (Silenced.) | R.P.M. | I.M.E.P. | B.H.P. | PTS/BHP/HR. | IGN. ADV. | DETN PT. | |---|---|---|---|---|---| | 4000 | 86.2 | 97.6 | .615 | 33… | ||
| scan0193 | Data table showing engine performance results for a cylinder head as part of the Bentley Development program. | ||
| View original record | BENTLEY DEVELOPMENT Cylinder Head Results R.P.M. | B.H.P. | B.M.E.P. | PTS/BHP/HR. | IGN. ADV. | DETN. PT. 4000 | 101.1 | 89.8 | .603 | 43 | NIL 3750 | 101.8 | 95.8 | .600 | 41 | " 3500 | 100.8 |… | ||
| scan0194 | Performance graph for a 25/30 HP 'Turbulence' cylinder head, comparing two configurations. | ||
| View original record | 25/30 H.P. CYLINDER HEAD (TURBULENCE) ① CYL. HEAD E.60660. C/R 6:1 ② MOD TO LEC 5002 C/R 5.86:1 INDUC'N PIPE E.60874 STROMBERG CARB. LEC 4883. Graph curves: MIN. ADVANCE FOR MAX. POWER NECESSARY… | ||
| scan0195 | Requesting an order of four Corrujoint 3 ply cylinder head gaskets for a Bentley. | ||
| View original record | x 219 To Roy. Hs/Swdl.11/JH.3.4.36. Will you please order 4 Corrujoint, 3 ply cylinder head gaskets otherwise to EB. 2619 which is the present production C & A gasket for the Bentley. We are anxious… | ||
| scan0196 | Changes to the cylinder head water circulation, specifically drilling water holes only at the rear of the engine block for the 25/30 and Bentley models. | ||
| View original record | BY. c. Hs/Rm. RHC. Mx. E/JNR.1/HP.14.5.36. Cylinder Head Water Circulation. Ref. HS/RM.10/KW.27.4.36 and E.9/HP.29.4.36. We send you herewith:- LeC.5117 showing the cylinder block with the water holes… | ||
| scan0197 | Requesting urgent pattern alterations to a Bentley high power engine head to address overheating and pre-ignition issues. | ||
| View original record | To RHC. X219 Hs/Swdl.16/KW.20.4.36. Bentley (High Power). We have had considerable trouble with overheating and pre-ignition on the original high power head Ex.20943. (1) Will you please take a… | ||
| scan0198 | To follow up on a previous order and to place a new order for specific cylinder head gaskets. | ||
| View original record | To Roy. Hs/Swdl.2/JH.24.4.36. Further to the memo. Hs/Swdl.11/JH.3.4.36, in which we ordered 4 Corrujoint 3 ply cylinder head gaskets to EB.2619 and which as yet we have not received, will you please… | ||
| scan0199 | Instruction memo regarding modifications to induction manifolds for a High Power Bentley. | ||
| View original record | x219 To RHC. Hs/Swdl.23/KW.27.4.36. Bentley (High Power). Will you please instruct 2 complete induction manifolds to Ex.20937/8, incorporating the modification Rm.118. These to be assembled with the… | ||
| scan0200 | Design of a new exhaust valve for a Bentley unit based on previous endurance tests. | ||
| View original record | X219 To E. Bentley. By making use of the experience gained on the endurance of the high power unit will you please design an exhaust valve with head design as MS.276 on Lec.5115 for trial on the… | ||
| scan0201 | The deturbulation of a cylinder head from Bentley unit No.19. | ||
| View original record | x49 To RHC. Hs/swdl.12/JM.25.5.36. Bentley unit No19. We are sending in the cylinder head off this unit in order to be deturbulated; the turbulent lips machined away in a similar manner to that… | ||
| scan0202 | Requesting an order for 'Corrujoint' cylinder head gaskets from a supplier in Slough. | ||
| View original record | To Roy. X219 Hs/Swdl.18/KW.29.5.36. Will you please order the following cylinder head gaskets - 4. "Corrujoint" 3-ply Gaskets, 2 to the drawing EB.2619 and 2 including the modification Rm.115. The… | ||
| scan0203 | Seat erosion on Bentley high performance cylinder heads and proposing a new casting method. | ||
| View original record | To RHC. c. to H1. x219 Hs/Rm.17/KW.9.6.36. Seat Erosion on Bentley High Performance Cylinder Heads. You know that we have had trouble on the T.T. heads owing to seat erosion. We observe that the… | ||
| scan0204 | Requesting modifications to a Bentley (High Power) cylinder head pattern to reduce the compression ratio. | ||
| View original record | X219 To RHC. Hs/Swdl.30/KW.16.6.36. Bentley (High Power). Will you please have 2 castings taken off the existing pattern Ex.22594 cylinder head. The casting around the exhaust seats to be chilled to… | ||
| scan0205 | Graph of engine advance curves for Delco Remy governors on Bentley engines, comparing a deturbulated head with a standard head. | ||
| View original record | CURVES REQUIRED ON DELCO REMY GOVERNORS FOR BENTLEY 1 DETURBULATED HEAD 2 STD. HEAD CURVES OVERCOME DETONATIONS AT LOW SPEEDS AND GIVES MAX. POWER AT HIGH SPEEDS Handwritten Note: Wyman, what do we… | ||
| scan0206 | Bentley cylinder distortion and expansion tests for 3.5 litre and 4.25 litre blocks. | ||
| View original record | x219 Hs/WB.7/KW.2.7.36. NOT SENT OUT Bentley Cylinder Distortion Tests. 3½ litre EB.1752, and 4¼ litre EB.2561 Cylinder Blocks. The cylinder blocks were supplied secured to crankcases, the bores… | ||
| scan0207 | Page 2 of a report on the expansion and distortion of a 4¼ litre engine component. | ||
| View original record | -2- Hs/WB.7/KW.2.7.36. 4¼ litre EB.2561. Expansion. This gave an average expansion of .0025", the minimum to maximum figures being .0002" to .0033"; a difference of .0031". Again there was a tendency… | ||
| scan0208 | Confirming the scrapping of 3.5 Litre High Compression Head castings and the lead time for new ones. | ||
| View original record | ✓ 219 Bly. From Hs./Rm. Hs/Rm.17/MJ.7.8.36. With reference to our conversation on the telephone today, I find that all the 3½ Litre High Compression Head castings were scrapped last stock-taking. It… | ||
| scan0209 | Standardisation of parts document concerning plugging the front water ways in a Bentley cylinder head. | ||
| View original record | RR 755B (10H) 88620 12-8-35 W.H.K. 21800 COMPLETED 4.9.36. BENTLEY STANDARDISATION of PARTS. Date 19-8-36 Description of Parts: Front water ways in cylinder head plugged up. Origin: To obtain a… | ||
| scan0210 | Estimated cost sheet for extra Jigs, Tools, and Equipment for the 20/25 HP model, introduced during the 'G' series. | ||
| View original record | KESTREL IV STANDARDISATION Est. cost of extra Jigs, Tools and Equipment (See X.No.519 - 20/25 HP). Introduced during "G" series.(Sft/GH.8.7.36.) (Without scrap) MATERIAL LABOUR CHARGES TOTAL - - - - -… | ||
| scan0211 | Requesting the loan of two 25/30 or 4 1/4 litre Bentley cylinder blocks. | ||
| View original record | To Sft/Mr.Wragg. X219 Hs/Mths.14/KW.5.10.36. Could you please arrange for Mr. Goodall to lend us two 25/30 or 4¼ litre Bentley cylinder blocks by Tuesday night. We should like to keep these for… | ||
| scan0212 | Cylinder wear results from tests in Kingsbury and anticipating further details from Paris. | ||
| View original record | To Hs/Rm. x49 Kingsbury, Oct. 8th, 1936. Bentley. I am enclosing cylinder wear results from Kingsbury as promised. The results of the lubricated cylinders via the con rod are indicated by a red line.… | ||
| scan0213 | Of thanks for further detailed information on Bentley cylinder bore wear. | ||
| View original record | W/K - KC. c. to GWH. X219 Hs/Rm.12/KW.9.10.36. Many thanks for the further information on Bentley cylinder bore wear. This detailed information is of the greatest value to us. Hs/Rm. | ||
| scan0214 | The standardization and testing of a deturbulated Bentley cylinder head. | ||
| View original record | 0219 To E. c.c. to Ey. Rm/Swdl.34/JH. 29.10.36. Deturbulated Bentley Cylinder Head. A standardisation sheet is being issued for the above type of head which has run 15,000 miles test on G-B-IV. The… | ||
| scan0215 | Query about conducting a test on a Bentley engine by leaving out the centre cylinder studs. | ||
| View original record | Handwritten: Liles r219 Swdl Have we done this? Rm Typed: Rm. re Cylinder Studs. We should be glad to know if you are going to make a test on a Bentley engine leaving out the centre studs from the… | ||
| scan0216 | The design of cylinder block EB.2561 regarding valve tappet covers and oil deflecting ribs for the 4 1/4 litre Bentley and 25/30 models. | ||
| View original record | Reiles 219 SNPL BY: c. Rm. RHC. Da. H/JNR. E.1/HP.9.11.36. Cylinder Block EB.2561. With reference to the large bore cylinder block used on both the 4 1/4 litre Bentley and the 25/30, we notice that… | ||
| scan0217 | Design modifications to a Bentley Cylinder Head. | ||
| View original record | [Handwritten top] Foden URGENT Swolf 219 Swyt [Typed] BY. C. D'NG. Rm. E/JNR.2HP.12.11.36. Bentley Cylinder Head. Please receive herewith:- LeC.5367 showing the above. On this design the inlet ports… | ||
| scan0218 | Bentley engine test with a modified cylinder stud configuration, resulting in a blown gasket. | ||
| View original record | Y 219 To E. from Rm/Swdl. Rm/Swdl.13/AP.16.11.36. BENTLEY CYLINDER STUDS. We have run at your request a Bentley unit with the centre row of cylinder studs deleted. In conjunction with this job a new… | ||
| scan0219 | Dispatch of two KB.2929 Cylinder Blocks to the Bentley Service Station in Kingsbury. | ||
| View original record | D/BP. From RHC. c.c. to G/MP. c.c. to G/Genr. c.c. to Rm. c.c. to Rm/GWHP. 219. RHC/SS.4/MJ.21.11.36. BENTLEY O/N. 54107. We are sending into the Stores for despatch to the Bentley Service Station,… | ||
| scan0220 | Request for test results on 'Corrujoint' and 'Klinger' materials for cylinder head joint washers. | ||
| View original record | 219 STEDMAN Any test results? Rm. ROY/MS3/.21.11.36. Rm file CYLINDER HEAD JOINT WASHER EB.2619. 25/30-HP We require to order these washers for "P2" Series, and shall be glad to know the result of the… | ||
| scan0221 | Corrujoint Washers as a potential replacement for C. & A. Washers. | ||
| View original record | 219 E. from Rm. c. to By. c. to Roy. Rm7/R.26.11.36. CORRUJOINT WASHERS. Attached is a report on these. On the whole we think they are a better job than the C. & A. Washer, but the latter do not give… | ||
| scan0222 | Satisfactory performance and specifications of Corrujoint cylinder head gaskets compared to other types. | ||
| View original record | Rm. from Swdl. Rm/SWd18/R.26.11.36. Corrujoint cylinder head gaskets to EB.2619 were run satisfactorily throughout the development of the TT. engine also used in the actual TT. The particular gaskets… | ||
| scan0223 | Customer complaint about a badly machined Bentley cylinder block. | ||
| View original record | 219 RHC. from Rm. Rm5/R.4.12.36. Bentley Cylinder Bore wear. Attached is a note we have received from Hancock relative to a cylinder block off a customer's car which he states has been badly machined.… | ||
| scan0224 | The inspection, testing, and oil consumption of Bentley cylinder blocks. | ||
| View original record | 219 To RHC. Kingsbury, Dec. 4th, 1936. Bentley Cylinder Blocks. We have despatched today the ground cylinder block for your inspection. Case. No.56. The following may be of interest to you. The other… | ||
| scan0225 | Decision to use copper asbestos gaskets for the 25/30 and Bentley cylinder heads. | ||
| View original record | Piles SWDC 219. By. --- c. Rm. E/JNR.1/HP.14.12.36. Cylinder Head Gaskets. Referring to the new 25/30 and the Bentley cylinder heads to LeC.5350 and LeC.5367, will you kindly note it has been decided… | ||
| scan0226 | Standardisation of a scraper ring due to complaints of high oil consumption. | ||
| View original record | RR 755B (10H) 88620 12-8-35 W.H.K. 21800 COMPLETED 19.12.36. BENTLEY STANDARDISATION OF PARTS. Date 2.11.36. (handwritten: 27/11/36) No. 219. Drawing No. 60821. Description of Parts: SCRAPER RING.… | ||
| scan0227 | Cost estimation sheet indicating nil tool cost for an order for the 'KU' Series. | ||
| View original record | WHITNEY STANDARDIZATION CHARTS X Estimated Tool Cost - Nil. Ordered for "KU" Series. MANUFACTURE LABOUR MATERIAL TOTAL | ||
| scan0228 | Cylinder bore distortion, its effect on oil consumption, and proposed grinding methods to rectify it. | ||
| View original record | 8219 RHC. from Rm/Swdl. c. to HPS. Rm/Swd115/R.4.1.36. CYLINDER BORES. GWH. recently obtained some very good oil consumption results on a cylinder block which had been re-ground at Kingsbury. The… | ||
| scan0229 | Standardisation of parts report for a deturbulated cylinder head. | ||
| View original record | RR 735B (toH) 88620 12-8-35 W.H.K. 2x800 COMPLETED 19.1.37 BENTLEY STANDARDISATION of PARTS. Date 21/12/36 (strikethrough: 30.10.36) X No. 219. Drawing No. EB.2560. No. RM.246. Description of Parts… | ||
| scan0230 | Production note estimating the cost of new tools for the 'L' Series chassis. | ||
| View original record | T.N. BY STANDARDISATION OF PARTS X Could be brought on to production at the 1st Chassis in "L" Series (without scrap) Estimated Cost of new tools £6. 0. 0. | ||
| scan0231 | The material specification for a Bentley Cylinder from The Midland Cylinder Co. | ||
| View original record | 219. To Roy. from Rm/Mths. Rm/Mths.20/AP.26.1.37. BENTLEY CYLINDERS. We have recently had machined a Bentley Cylinder from The Midland Cylinder Co. and would like to know the specification of the iron… | ||
| scan0232 | Request to manufacture a plate for use in Bentley cylinder distortion tests. | ||
| View original record | To HPS. from Rm/Mths. c. to RHC/SS. 219 Rm/Mths.2/AP.30.1.37. BENTLEY CYLINDER DISTORTION We should like you to have made a plate to the attached sketch Rm.288, this is for use on cylinder distortion… | ||
| scan0233 | Cylinder block wear on a Bentley, proposing a modification to the carburettor strangling control. | ||
| View original record | x 219 Rm from Rm/GWH 2nd February, 1937. Bentley. ------- I enclose cylinder block wear chart for January, 1937. We are of the opinion that the strangling of the Carburettor when starting has a lot to… | ||
| scan0234 | Advantages and difficulties of the cylinder block design for 25/30 and Bentley models. | ||
| View original record | Sg. Hs. c. Fm/Gry./E/JRR. 20 1 36 219 26 6 32 Da.2/HP.5.4.37. Cylinder Blocks - 25/30 and Bentley. The question seems to condense down to whether we want to use the present engine construction or not.… | ||
| scan0235 | Analysis of different cylinder block design and manufacturing methods, focusing on water spaces, studs, and wet liners. | ||
| View original record | (sheet 2) wider water spaces on the sides, thus making a more substantial sand core, and in a few cases enabling the water space between the cylinders to be eliminated, a thing which could not be done… | ||
| scan0236 | And recommending different engine construction options, including the Peregrine design. | ||
| View original record | (3) There are no disadvantages that we can see, if the liner construction is approved. This latter does not require rubber rings and is the same as was successfully used on the Peregrine. (This system… | ||
| scan0237 | Confirming the dispatch of a defective dynamo coupling from a 4¼-litre chassis. | ||
| View original record | K/W. Rm/Matthews. 219 Railton K/KC/DPB/17.4.37. Further to our telephone conversation on Wednesday last, we are today despatching to you under cover of our advice note No.205, one defective dynamo… | ||
| scan0238 | Requesting the despatch of a Bentley crankcase and cylinder block for machining. | ||
| View original record | 219 To G/Mt. Rm/Mths.5/JH.30.4.37. Will you please despatch Bentley crankcase and cylinder block to Kingsbury depot addressed to Mr. Clarck. These parts are property of experimental department and are… | ||
| scan0239 | Despatch and machining of a Bentley crankcase and cylinder block. | ||
| View original record | W/K - KC. -219. Rm/Mths.6/JH.30.4.37. We are despatching today a Bentley crankcase and cylinder block for your attention, this block we should like machined when bolted to crankcase and suggest… | ||
| scan0240 | Instruction to the despatch department to send a Bentley cylinder block and crankcase to Bentley Motors Ltd. for machining. | ||
| View original record | ✓ 219. To D/BP. Rm/Mths.2/JH.4.5.37. Will you please issue the necessary instructions to despatch department in order that they can despatch to Bentley Motors Ltd., Kingsbury, 1 Bentley Cylinder… | ||
| scan0241 | The testing of a new cylinder head and induction system for Bentley development. | ||
| View original record | 219 To HPS. from Rm/CTS. Rm/CTS.5/AP.21.5.37 BENTLEY DEVELOPMENT We have on test the latest cylinder head and induction system (proposed new design for production). The inlet pipes to EB.3230/1 have… | ||
| scan0242 | Cylinder bore wear, materials like Chromidium iron, and Brinell hardness for 25/30 and Bentley cylinder blocks. | ||
| View original record | Hs. from Rm. c. E. c. Ey. c. REC. c. HI. Rm6/R.29.5.37. 25/30 & BENTLEY CYLINDER BLOCKS. Further to Rm1/R.26.5.37., we have now read By.10/G.25.5.37. and Ey.14/G.25.5.37. In view of the remarks… | ||
| scan0243 | Cylinder bore wear, comparing Brinell hardness values, and considering alternative castings to improve quality. | ||
| View original record | -2- to show that the brinell we are trying for, which is round about 250-270, will give us appreciably better wearing qualities than the normal brinell round about 200, which is being used by the… | ||
| scan0244 | Comparison of engine cylinder bore wear statistics for various vehicles and components. | ||
| View original record | BORE WEAR. ENGLAND. CHEVROLET (16,500 miles in England) Brinell - 199/229. Wear assuming cylinders were originally to nominal size of 3.3125 = .000279 Wear assuming dimension at bottom of block to be… | ||
| scan0245 | Cylinder wear data for Midland Cylinder Co. and R.R. Cast Cylinders after 16,900 miles in France. | ||
| View original record | -2- Wear per 1000 miles. FRANCE. 3.B.IV. (B.3. Unit) 16,900 miles in France. Midland Cylinder Co. Wear ................... .0000885 Brinell = 205-214. 6.B.IV. (E.22 Unit) R.R. Cast Cylinders. Wear… | ||
| scan0246 | List of Bentley chassis fitted with replacement cylinder blocks during the month of June 1937. | ||
| View original record | Ha/am16/1B. 219 W/Kingsbury. 1st: July 1937. The undernoted Bentley chassis have been fitted with replacement cylinder blocks during the month of June, 1937. Date | Chassis | Size | Block No: | Piece… | ||
| scan0247 | Log sheet detailing cylinder wear measurements for various chassis in thousandths of an inch. | ||
| View original record | PARTICULARS OF CYLINDER WEAR ++)/JUNE.1937. Showing amount plus nominal and oval in thousandths of an inch. Date Chassis Mlg. No: 1. No: 2. No: 3. No: 4. No: 5. No: 6. Remarks. 1:6:37 B. 10 B.N. 26083… | ||
| scan0248 | Log sheet from June 1937 detailing measurements for various vehicle chassis. | ||
| View original record | Sheet 2. JUNE.-1937. Date | Chassis | Mlg. | No: 1. | No: 2. | No: 3. | No: 4. | No: 5. | No: 6. | Remarks. 16:6:37 | B. 40 C.R. | 35064 | .005 .0005 | .005 Nill | .006 .002 | .0035 .0005 | .0045 .002… | ||
| scan0249 | Simplified design of Bentley cylinder blocks to facilitate foundry work and plans for testing. | ||
| View original record | RHC. from Rm. HPS. Rm10/R.30.7.37. BENTLEY CYLINDER BLOCKS SIMPLIFIED TO FACILITATE FOUNDRY WORK. During the holidays we managed to get the design for the Bentley cylinder block detailed. This design… | ||
| scan0250 | Modifications to a Bentley cylinder block and head with improved cores. | ||
| View original record | To BY/CS. c. to Rm. c. to HPS. SWDL B-219 BY/McS.3/N.5.8.37. Bentley - Cylinder Block & Head with Improved Cores. Herewith: LeC.5717 - Modification to Cyl. Block and Head to improve cores. LeC.5742 -… | ||
| scan0251 | Experimental Bentley cylinder block and head castings, detailing casting defects and dimensional inaccuracies. | ||
| View original record | 219. LHTHS Pilee SWDL To Mr. [redacted] from HPS. c. to Rm. c. to Mr. Vickers (Iron Foundry) HPS.7/VS.31.8.37. BENTLEY CYLINDER BLOCK AND HEAD TO LeC.5717. The Iron Foundry have recently supplied us… | ||
| scan0252 | Inspection report detailing dimensional errors, weight, and defects of a cylinder block casting. | ||
| View original record | - 2 - HPS.7/VS.31.8.37. The width of the core on the 2.450 dimension is minus .050. The .950 dia. pipe in the centre section is misplaced .050, making the sectional thickness on the top side .110… | ||
| scan0253 | Design alterations and foundry issues for the Bentley Cylinder Block & Head. | ||
| View original record | 219. To RHC. from RHC/Vs. c. to HPS. c. to Rm. RHC/Vs.1/JS.2.9.37. IRON FOUNDRY. Bentley Cylinder Block & Head to L.E.C.5717. Re. the memo HPS/7/VS.31.8.37, we wish to report as follows:- The… | ||
| scan0254 | Bentley cylinder bore wear and oil consumption, detailing specific engine features and test results. | ||
| View original record | 219 w/e 1124 1220 28.9.37 263 BENTLEY CYLINDER BORE WEAR AND OIL CONSUMPTION B.2).A. The special features on this car are as follows:- (1) Low Brinell cylinder block produced without chills in the… | ||
| scan0255 | Venturi crankcase breather tests and cylinder wear measurements. | ||
| View original record | -2- Venturi crankcase breather. The venturi breather tests show that the depression in pipe leading from the crankcase to be as follows under calm conditions - 30 m.p.h. - 0.3 inches of water. 70 " -… | ||
| scan0256 | Request to fit a packing plate under the cylinder block to adjust the compression ratio. | ||
| View original record | To HPS. from Rm/Swdl. Rm/Swdl.1/AP.2.11.37. B.4. Will you please fit a packing plate .125 thick under the cylinder block of the above unit in order to bring the compression ratio standard (6.5 : 1)… | ||
| scan0257 | Modification to the cylinder block to prevent scratching on the working face of the piston. | ||
| View original record | RR 755B (10H) 26074 2-11-36 WHK 24999 COMPLETED 9.11.37. BENTLEY STANDARDISATION of PARTS. Date 14.6.37. X No. 219. Drawing No. EB.2929. Description of Parts: MODIFICATION TO CYLINDER BLOCK. Origin:… | ||
| scan0258 | Modification proposal to introduce a radiused finish to cylinder bores to prevent scotching on working faces. | ||
| View original record | BENTLEY STANDARDIZATION of PARTS MODIFICATION TO CYLINDER BLOCK Description of Parts affected Origin: To prevent scotching on working faces of Piston. Report on Experimental Test. I.O.D. No. Date:… | ||
| scan0259 | Blueprints for Bentley single-cylinder ramp head components, including piston and cylinder head modifications. | ||
| View original record | [crossed out] HPS c. Rm. c. Rm/[crossed out] Swdl c. Mr. Brailsford (Alum.Foundry). [handwritten] 219 BY/Ald.10/G.3.5.38. BENTLEY SINGLE CYLINDER - RAMP HEAD. PISTON - SECTION 5040. CYLINDER - SECTION… | ||
| scan0260 | Parts list and instruction memo for oil pipes and fittings on a Bentley 11 'M' Series chassis. | ||
| View original record | 219 HPS. c. Rm. c. Rm/Swdl. c. ROY/Des. BY/Ald.1/G.14.11.38. BENTLEY 11. CHASSIS - 'M' SERIES. CYLINDER - SECTION 5050. OIL PIPES AND FITTINGS - SECTION 5200. Please receive herewith two blueprints of… | ||
| scan0261 | Requesting the production of oil filter support brackets for the Bentley 11 chassis. | ||
| View original record | HPS. c. Rm. c. Rm/Swdl. 219 BY/Ald.4/G.6.12.38. BENTLEY 11. CHASSIS. CYLINDER - SECTION 5050. Please receive herewith two blueprints of each of the following :- Ex.S.1276 Oil Filter Support Bracket -… | ||
| scan0262 | Notice circulating blueprints for a 'General' Oil Filter and its fittings for the Bentley 'M' Series, 101st chassis onwards. | ||
| View original record | 219 BY/CS c. BY/Mtn. c. Rms. c. Bm/Cmdl c. ROY/Les. BY/NS.18/G.8.12.38. BENTLEY 'M' SERIES. 101ST. CHASSIS ONWARDS. CYLINDER AND OIL PIPE FITTINGS. GENERAL OIL FILTER. We send you herewith blueprints… | ||