Rolls-Royce Archives
| Identifier | Entry | ||
| scan0001 | Issues with pistons, gasket leakage, and boost levels for the supercharged 'Bensport' engine. | ||
| View original record | X236 E. from Hs/Rn. c. to By. Hs/Rn. 7/KT. 20.9.32. PISTONS FOR SUPERCHARGED BENSPORT. At the present moment we have no pistons that will give us less than 5.85 : 1 c.r. on Peregrine, and actually… | ||
| scan0002 | Piston specifications and turbulence tests for the Bensport Engine. | ||
| View original record | X236. To BY. from E. c. Hs. re Bensport Engine. When the 3.25 bore J.l. engine was originally instructed to scheme 1585 the piston called for was E.56610 which comes flush with the top of the cylinder… | ||
| scan0003 | Bensport car with piston failure at Chateauroux due to worn locking rings on the gudgeon pin. | ||
| View original record | Y236. To Sg. From Hs. c. to Wor. c. to E. c. to By. Hs.2/WJ.3.3.33. Re. BENSPORT. When the Bensport car arrived at Chateauroux it was found that there was considerable leakage of gas past the pistons.… | ||
| scan0004 | Method for locking gudgeon pins in Bensport Pistons using an aluminium plug. | ||
| View original record | S/W. Hs...from PN. Copy to Sg. X236. PN.1/WT3.3.33. Bensport Pistons. Referring to our conversation on the 'phone this afternoon, I mentioned to En. this morning the trouble which has arisen with the… | ||
| scan0005 | Blueprint detailing a modified gudgeon pin location for a 20/25 piston. | ||
| View original record | Ex10704 Ex10695 SPHL. ENDED Ex10703 FLAT ENDED Ex10696 Ex10694 MODIFIED GUDGEON PIN LOCATION - 20/25 PISTON ROLLS-ROYCE, LTD PRINT ROOM MAR 8 1933 DERBY. | ||
| scan0006 | Use and specifications of Bensfort pistons, including dimensions and compression ratios. | ||
| View original record | E. from Hs/Rm. X236. Hs/Rm.6/KT.3.3.33. BENSFORT PISTONS. On all our test bed work we have been using standard pistons. On the car running in France, however, we find that the pistons had .030"… | ||
| scan0007 | Required increase in diametrical load for gudgeon pin retaining rings. | ||
| View original record | To Hs. from E. c. Sg. Wor. By. /236 E.1/HP.8.3.33. Gudgeon Pin Retaining Rings. We have come to the conclusion that the retaining rings will be satisfactory if they are put in more tightly on… | ||
| scan0008 | The failure of Bensport gudgeon pin fixings after 5000 miles and the subsequent modifications tested. | ||
| View original record | Files X236 9.3.33. FAILURE OF BENSPORT GUDGEON PIN FIXING. After about 5000 miles running in France which included both track work and consistent high speeds on continental roads, it was found that… | ||
| scan0009 | Photographic comparison of two pistons, one of which shows a significant fracture at the gudgeon pin boss. | ||
| View original record | ", | ||
| scan0010 | Bensport piston failure and modifications to pistons and pins for a car in France. | ||
| View original record | X2 361 E. from Hs/Rm. Hs/Rm.9/KT.9.3.33 BENSPORT PISTON FAILURE. Herewith prints of modifications carried out to pistons and pins of car now running in France. Hs/Rm. | ||
| scan0011 | Blueprint detailing a modified gudgeon pin location for a 20/25 piston. | ||
| View original record | MODIFIED GUDGEON PIN LOCATION - 20/25 PISTON E 56610 ROLLS-ROYCE, LTD. PRINT ROOM MAR 8 1933 DERBY | ||
| scan0012 | Blueprint detailing a modification to a 20/25 Piston, part number E 56610. | ||
| View original record | Ex/10694 ROLLS-ROYCE, LTD PRINT ROOM MAR 8 1933 DERBY. .74935 DIA +1.5/0 ALL OTHER DIMS ETC TO E 56610 UNDERCUT AND RECESS IN BORE ARE DELETED MODIFCN To 20/25 PISTON E 56610 Ex 10694 | ||
| scan0013 | Blueprint for a Gudgeon Pin with dimensions and manufacturing instructions. | ||
| View original record | [ "E54771", "10695", "Ex 10695", "LAP OUTSIDE DIA AFTER", "PRESSING IN PADS Ex", ".020 R +5", ".853 DIA C.E. +1/2", "GRIND TAPER 1 IN 48 EACH END", "ALL OTHER DIMS ETC TO E 56469", "GUDGEON PIN",… | ||
| scan0014 | Blueprint for an 'End Pad - Gudgeon Pin'. | ||
| View original record | Ex/0696 1-696 MEASURED IN LINE WITH FACE .5545 DIA -1/2 UE .3437 DIA +5 TAPER 1 IN 48 1 HOLE .055 DIA .650 +0 -10 .015R -5 .575 -10 .150 -5 17° .175 DIA .187 CRS -10 .675 DIA -5 .075 -10 END PAD -… | ||
| scan0015 | Proposed modifications to the Bensport piston design and production considerations. | ||
| View original record | X236 To BY. from E. c. Hs. Ws. By/SS. re Bensport Pistons. -------------------- With regard to the Bensport piston which is .032" higher than the standard, we propose to utilise the existing dies and… | ||
| scan0016 | Instructions regarding the fixing of gudgeon pins for the Bentley engine now being built. | ||
| View original record | X236 R.H.C. from Hs/Rm. Hs/Rn.3/KT.15.3.33. GUDGEON PIN FIXING - BENTLEY ENGINE NOW BEING BUILT. Will you please note that E. has issued instructions in the attached note with regard to the fixing of… | ||
| scan0017 | Piston failure on a Bensport model and the proposed solution. | ||
| View original record | X236 To BY. from E. c. Hs. By/SS. E.2/HP.20.3.33. Bensport Piston and Cylinder Head. We have had a piston failure on the Bensport running in France in which it is reported that the top of the piston… | ||
| scan0018 | Piston failure in a Bensport car after just over 1,000 miles. | ||
| View original record | R.Sq. o. to E. c. to By. Wos. RE. BENSPORT CAR. Hs.10/IMJ. 30.3.33 X236. The piston which has failed on the Bensport car was only run just over 1,000 miles. We are waiting to receive some more… | ||
| scan0019 | Analysis of Bensport piston failures, discussing material, clearance, and design issues. | ||
| View original record | X236. To R. from E. c. Sg. Wor. Hs. BX. E.4/HP.25.3.33. Bensport Piston. With reference to the failures which have occurred with Bensport piston tops breaking off above the skirt, we are not convinced… | ||
| scan0020 | Explaining the failure of a Bensport piston due to it being made from an unsuitable old crankcase alloy. | ||
| View original record | X 236 To R. from E. c. Sg. Wor. Hs. By. E.1/HP.27.3.33. Bensport Piston. Since writing memo E.4/HP.25.3.33, we understand that by some mistake the Bensport piston which broke was made from our old… | ||
| scan0021 | Request for tensile strength figures for a 10% zinc and 2% copper alloy following an analysis of a Bentley piston. | ||
| View original record | X236. Hl. from Hs/Rm. Hs/Rm.10/KT.27.3.33. We thank you for your analysis of the Bentley piston which we handed to you. For record purposes we should be interested to have a figure for the tensile… | ||
| scan0022 | Questioning the alloy used in two failed 'Bensport' pistons. | ||
| View original record | S/W. E.H. from P.N. Copy to Sg. Mr. Hs. Dy. X236. PN.3/#T28.3.33. Bensport Pistons. In your first memo on this subject E.4/HP.25.3.33 you refer to the failures which have occurred with Bensport piston… | ||
| scan0023 | Laboratory report on the ultimate stress of various aluminium alloys after heat soaking. | ||
| View original record | X236 To Hs/Rm. HL2/AG.28.3.33. Laboratory. Report No.L2657. RE - ALUMINIUM ALLOYS. (See Hs/Rm10/KT.27.3.33.) Zinc Copper Alloy. (Struck through, with handwritten annotation 'aluminium' above) 8%… | ||
| scan0024 | Increasing the load on a 20/25 circlip and analysing piston failures. | ||
| View original record | X236. To BY. from E. c. Hs. Hd. E.2/HP.28.3.33. re Chassis GDP-49. ALLDRITT. With reference to your memo BY.4/G.27.3.33, we think it would be quite safe to increase the load on the 20/25 circlip right… | ||
| scan0025 | The fitting and load characteristics of wires and Bensport circlips for various engines, including the 20/25, Peregrine, and Phantom II. | ||
| View original record | - 2 - E.2/HP.28.3.33. -------------------------------- of carrying. In putting these wires in position we think that one end is always inserted first in the groove and the remainder of the ring is… | ||
| scan0026 | Analysis of broken Bensport Pistons due to unsuitable material. | ||
| View original record | X236. To F.N. from E. E.8/HP.29.3.33. c. Sg. Wor. Hs. By. Bensport Pistons. Replying to your memo PN.3/WT.28.3.33, one of the pistons which broke was analysed, and was found to be, as has been… | ||
| scan0027 | Sketch for a modified bedding on Bensport Pistons to prevent skirt failure. | ||
| View original record | X236 RHC. From Hs/Gry. Hs/Gry.9/MA.12.4.33. BENSPORT PISTONS. We send you herewith a sketch of a modified bedding which we think may prevent failure of the piston skirts. We understand from Mr.… | ||
| scan0028 | Improved design for the Bensport Piston to address a reported failure. | ||
| View original record | To BY. from E/JNR. X236. c. Wor. Hs. E/JNR.1/HP.19.4.33 RECEIVED 19 MAY 1933 re Bensport Piston. We send you herewith: LeC.3447 - showing an improved piston which we consider we have strengthened in… | ||
| scan0029 | Five modifications made to the Bensport Piston design. | ||
| View original record | To BY. from E. c. Hs. RHC. X236 E/JNR.3/HP.26.4.33. RECEIVED APR 26 1933 re Bensport Piston. We re-issue to you - LeC. 3447. The modifications we have made since we first sent you the drawing are:… | ||
| scan0030 | Issues with chassis engine pistons, including skirt collapse and 'bucketing', and proposing improved designs. | ||
| View original record | X236. To Sg. Wor. from E. E.8/HP.11.5.33. x45553 x7040 x5040 x4027 c. Hs. By. Chassis Engine Pistons. From the results we have obtained with running engines at high speeds on Bensport, Phantom 2 and… | ||
| scan0031 | Requesting the production of an experimental Bensport piston set for testing and outlining its design. | ||
| View original record | Y236 To BY. from E/JNR. c.c. Wor. Hs. RHC. re Bensport Piston. We send you herewith - LeC.3493 showing an experimental piston for the above chassis. Will you please make one set as soon as possible… | ||
| scan0032 | Authorising tests to delete the piston ring stops on Bentley engines. | ||
| View original record | X236. To RHC. from Hs/Rm. Hs/Rm.9/KT.19.5.33. BENTLEY PISTON RING STOPS. E. has agreed that we shall make some tests deleting the piston ring stops entirely. Will you therefore please order enough… | ||
| scan0033 | Request to the Bentley Unit to make three sets of piston rings for V1597. | ||
| View original record | X236 RHC. From Hs/CTS. Hs/CTS.2/MA.6.7.33. BENTLEY UNIT. Will you please make three sets of piston rings to V1597. Hs/CTS. | ||
| scan0034 | Analysis of gudgeon pin and piston sizes, comparing actual interference fits with drawing specifications for Bentley Pistons. | ||
| View original record | To Hs/Rm. from RHC. X236. RHC.6/BE24.7.33. Bentley Pistons EB.495 We give below an analysis of the gudgeon pin and piston sizes, and it will be observed that the actual interference fits of the… | ||
| scan0035 | Piston failures and modifications during Bentley engine testing. | ||
| View original record | x236. For. From Hs/Wm. c. to C. c. to I. c. to Sy. c. to Da. c. to PW. c. to Bn. Hs/Rm.5/MA.22.8.33. BENTLEY PISTONS. On the original 10,000 miles test we had three troubles with the pistons. These… | ||
| scan0036 | Piston failures after 6,300 miles and proposed modifications to prevent seizing. | ||
| View original record | X236. E. From Hs/Rm. c. to By. c. to Mx. Hs/Rm.6/MA.22.8.33. We hand you herewith two of the pistons which have been returned by GWH. having failed at the completion of 6,300 miles running. We think… | ||
| scan0037 | Blueprint diagram of a piston. | ||
| View original record | ", | ||
| scan0038 | Blueprint diagram of No. 5 piston noting that the top two rings on all pistons were found jammed. | ||
| View original record | MILEAGE 6334 PREVIOUS MILEAGE BEFORE FAILURE 4877 Nº 5 PISTON. THE TWO TOP RINGS ON ALL PISTONS WERE FOUND JAMMED. G.W.H. | ||
| scan0039 | Blueprint comparing three different Bentley piston designs with dimensions and test results. | ||
| View original record | PISTON DIMENSIONS BENTLEY First Piston: Dimensions: 3.230, 3.238, 3.247 ORIGINAL 25 HP PISTON E 55350 FITTED TO BENTLEY 1 IN ORIGINAL 10,000 MILES TEST STARTING FEB. 1933 FAILED AFTER 4877 MILES.… | ||
| scan0040 | Request to manufacture two sets of Bensport pistons with a specific modification for endurance tests. | ||
| View original record | x23.62 RHC. From Hs/Gry. Hs/Gry.4/MA.23.8.33. BENSPORT PISTONS. Will you please make two sets of pistons to the attached blue print Hs.1107 except that the diameter of the lowest piston ring land is… | ||
| scan0041 | Design and development of a Bentley piston. | ||
| View original record | X236. P.B.39 To Hs/Rm. from E. c. By. Mx. E.1/HP.24.8.33. Bentley Piston. Replying to your memo Hs/Rm.6/MA.22.8.33, we have received only one sample piston with this memo. With regard to the… | ||
| scan0042 | Loss of 3HP at top speeds due to the longer cylinder barrel used for Bentley Pistons. | ||
| View original record | X236. E. From Hs/Rm. c. to By. c. to Mx. Hs/Rm.1/MA.25.8.33. BENTLEY PISTONS. Referring to E.1/HP.24.8.33., we have now made four or five confirmatory tests and it is certain that we loose about 3HP.… | ||
| scan0043 | Clarifying a misunderstanding regarding the dimensions on the Bentley piston. | ||
| View original record | Hs/Rm. E. C - Mx. X236 BY9/W.25.8.33. Bentley Piston. Referring to Hs/Rm6/MA.22.8.33,and E.1/HP.24.8.33, it is evident that some misunderstanding has arisen in connection with the supposed change of… | ||
| scan0044 | Ordering a hold on Bentley piston production due to failures and outlining the subsequent investigation. | ||
| View original record | E.Dept. Sft. Roy/Ms. Rm. X236. BY5/W.25.8.33. Bentley Piston. Will you kindly note that owing to failures having occurred on the Bentley piston in France we should hold up all work on the production… | ||
| scan0045 | Letter to The Automotive Engineering Co. Ltd. regarding piston failures with RR.53 alloy. | ||
| View original record | Y413 Hs/Gry.7/MA. August 25th., 1933. The Automotive Engineering Co.Ltd., The Green, Twickenham. For the attention of Mr.Hewitt. Dear Sir, We believe you have found our RR.53 alloy very successful for… | ||
| scan0046 | Recent failure of Bentley pistons, its potential causes, and next steps for development. | ||
| View original record | X236. To WOR. from E. E.4/HP.26.8.33. c.c. Hs. By. Bentley Pistons. With regard to the recent failure of Bentley pistons on Hancock's car, we think this can be explained by the excessive oil and air… | ||
| scan0047 | Letter from The Automotive Engineering Co Ltd regarding R.R.53 alloy and piston development. | ||
| View original record | SELF ADJUSTING PISTONS THE AUTOMOTIVE ENGINEERING CO LTD TELEGRAMS: MOTIF, TWICKENHAM. CABLES CODE: BENTLEY, (1ST EDN). DIRECTORS: E. TREVOR WILLIAMS, CHAIRMAN. H. C. HOBBINS, F.C.A. MAJOR C. R. M.… | ||
| scan0048 | Piston and crankshaft failures during a high-speed endurance test on a Bentley Unit C.13 engine. | ||
| View original record | FILES. Y 236. HIGH SPEED ENDURANCE. BENTLEY UNIT C.13. PISTON FAILURE. Pistons LOP. EB.513. EB.495 Die Cast (Mx. type of bedding) EB.501 Gudgeon Pin. Cyl. Block. EB.89 (Short type barrels). On the… | ||
| scan0049 | The failure of a No.6 balance weight on the No.4 journal, which broke through the crankcase. | ||
| View original record | -2- No. 6 Balance weight (large) on No.4 journal came through nearside of crankcase, scrapping top and bottom half. The retaining stud had broken off at the base. Total running time since overhaul and… | ||
| scan0050 | Blueprint diagram illustrating a crack failure on a Bentley piston, including a table of dimensional data. | ||
| View original record | Hs. 1116 BENTLEY PISTON FAILURE A. DIA B. DIA C. DIA D. DIA CRACK. PISTON GRINDING | DIA A. | DIA B. | DIA C. | DIA D. Mx. TYPE | 3.227 | 3.231 | 3.240 | EB.500 | 3.230 | 3.238 | 3.247 | 3.248. ROLLS… | ||
| scan0051 | Development and design decisions for Bentley pistons, specifically regarding skirt and land dimensions. | ||
| View original record | Hs/Rm. E. C. Mx. x 286 BY.3/G.28.8.33. BENTLEY PISTONS. Further to my memo BY.9/W.25.8.33. on the above subject, which was intended merely to indicate that no bulk of pistons were in hand as no… | ||
| scan0052 | Improved heat treatment for Bentley pistons and requesting an order for new die castings. | ||
| View original record | To RHC. from Hs/Rm. Hs/Rm.4/KT. 29.8.33. BENTLEY PISTONS. Hl. has an improved heat treatment for the piston alloy which we want to try to help us with our trouble on the Bentley. The heat treatment… | ||
| scan0053 | Blueprint detailing the grinding specifications and dimensions for two 'Bensport' pistons. | ||
| View original record | HS 1107 MOD TO EB 500 3.230 DIA -1 3.238 DIA -1 3.240 DIA -1/2 3.2285 DIA -2 3.242 DIA -1/2 3.246 DIA -1/2 PISTON (GRINDING) BENSPORT ROLLS ROYCE. LTD. PRINT ROOM AUG 29 1933 DERBY | ||
| scan0054 | Inquiry to The Light Production Co. Ltd. regarding the availability of 'Aerolite' pistons for a Bentley chassis. | ||
| View original record | XJ 153 Hs/Gry.2/MA. August 24th., 1933. The Light Production Co.Ltd., 60/66 Rochester Row, Westminster, London, S.W.1. For the attention of Mr.Neal. Dear Sir, We should be glad to know whether you… | ||
| scan0055 | Letter from The Light Production Co. Ltd. regarding the use of Aerolite Pistons and proposing a meeting. | ||
| View original record | x236. THE LIGHT PRODUCTION CO. LTD. PROPRIETORS OF THE LONDON PISTON RING CO. LTD. ENGINEERS CHAIRMAN & MANAGING DIRECTOR: M V. ROBERTS. DIRECTORS: C E. GEORGE. WY THIRTLE. TELEPHONE:- VICTORIA 0671.… | ||
| scan0056 | Letter to The Light Production Co. confirming a visit and sending drawings for Aerolite pistons to be tried in a Bentley chassis. | ||
| View original record | X 23b Experimental Dept. Hs/Gry.8/KT. Sept. 1st 1933. The Light Production Co, Ltd., 60/66 Rochester Row, Westminster, London. SW.1 For the attention of Mr. Brooks. Dear Sirs, We confirm the visit of… | ||
| scan0057 | Letter from The Light Production Co. Ltd. discussing piston drawings and requesting material specifications. | ||
| View original record | X236 THE LIGHT PRODUCTION Co. LTD. PROPRIETORS OF THE LONDON PISTON RING CO. LTD. ENGINEERS CHAIRMAN & MANAGING DIRECTOR: M. V. ROBERTS. DIRECTORS: E. K. GEORGE. WM THISTLE. TELEPHONE:- VICTORIA 0671.… | ||
| scan0058 | Page 2 of a letter from The Light Production Co. Ltd. quoting a price and lead time for twelve pistons. | ||
| View original record | - 2 - the limits of cylinder bore size of the engines in which you propose to test the pistons. In connection with the cost for twelve only pistons, we have now gone very closely into this, and find… | ||
| scan0059 | Letter to The Light Production Co. Ltd. regarding a piston drawing, material specifications, and an order for twelve pistons. | ||
| View original record | X236 Experimental Dept. He/Cry.5/KT. Sept. 6th 1933. The Light Production Co. Ltd., 60/66 Rochester Row, Westminster, London. S.W.1. For the attention of Mr.Brooks. Dear Sirs, We thank you for your… | ||
| scan0060 | Request to order 12 Aerolite pistons for testing in a Bentley from the Light Production Co. Ltd. | ||
| View original record | X236 To ROY. from Hs/Gry. Hs/Gry.6/KT.6.9.33. Will you please send an order for 12 Aerolite pistons, for testing in the Bentley, to the Light Production Co. Ltd., 60/66 Rochester Row, Westminster.… | ||
| scan0061 | Requesting the production of a modified set of pistons for the C.XI unit to improve bedding and prevent failure. | ||
| View original record | X236. To RHC. from Hs/Rm. Hs/Rm.14/KT. 7.9.33. C.XI. UNIT. We have now completed sufficient running on these pistons to be satisfied that they will not break. We therefore wish to slightly modify the… | ||
| scan0062 | Suggested dimensions for a further set of experimental 3½ Litre Bentley pistons. | ||
| View original record | Hs/Rm from Mx. Mx14/T7.9.33. 3½ LITRE BENTLEY - PISTONS. I am returning to you herewith your Blue Print with my suggested dimensions for a further set of Experimental Pistons. The differences between… | ||
| scan0063 | Blueprint detailing modifications for grinding an EB.500 piston to EB.495 specifications. | ||
| View original record | X11480 A EB.500 PISTON GROUND TO EB.495 DRG. MODIFIED AS SHEWN. AREA OF BEDDING REDUCED THUS OTHERWISE TO EB500 PISTON EB 495 MODIFns TO PISTON GRINDING EB500 ROLLS ROYCE. LTD. PRINT ROOM SEP 7 1933… | ||
| scan0064 | Reproduction of Bentley piston failures on a test bed and proposed solutions. | ||
| View original record | To WSP, C.C. O.S, Dy, F.H. From He/Ha, R, Do, Em. He/Ha.15/KT; 8.9.33. BENTLEY PISTONS. Further to He/Ha.5/MA; 22.8.33. We have been able to reproduce several of the 10,000 miles piston skirt failures… | ||
| scan0065 | Design and testing of unsplit Bentley pistons. | ||
| View original record | X236. To Hs. from E. c. Wor. C. By. Mx. Sft. Bentley Pistons. In addition to the semi-split pistons which you are at present running, to design [LeC. 3447] we think it would be useful to try a set of… | ||
| scan0066 | The results of endurance testing on pistons for two different engine units. | ||
| View original record | To RHC. From Hs/Rm. Hs/Rm.2/KT. 21.9.33. PISTON TESTS. We have now completed endurance running on pistons with various bedding on two of our engines. B.I. Unit. This engine has been running with… | ||
| scan0067 | Design and testing of various Bentley piston types. | ||
| View original record | X23/6 To E. From Hs/Rm. C. HOT. C. Hy. C. Mt. Hs/Rm.R/KY.23.9.33. BENTLEY PISTONS. With reference to E.R/HP.15.9.33. Our original experience with aluminium pistons of 3.000" bore or over leads us to… | ||
| scan0068 | High-speed endurance test on pistons, detailing a valve failure and subsequent inspection. | ||
| View original record | FILES: ------- X256 23.9.33. -------- PISTONS. UNIT.C.XI. EB.495 Piston - A/P 404. Die cast. EX.11480 Piston grinding. EB.514 Scraper rings (.085 oil groove). High speed endurance has been carried out… | ||
| scan0069 | Requesting experiments to change the gudgeon pin from an interference fit to a push fit. | ||
| View original record | COPY. To Hs. from E. x736 E.8/HP.26.9.33. c. Wor. By. re Gudgeon Pin Fit. It is very urgent to make experiments, with a view to getting away from the interference fit of the gudgeon pin in the piston.… | ||
| scan0070 | Letter from The Light Production Co. Ltd. regarding a delay in the manufacture of experimental Aerolite Pistons. | ||
| View original record | X236. THE LIGHT PRODUCTION CO. LTD. PROPRIETORS OF THE LONDON PISTON RING CO. LTD. CHAIRMAN & MANAGING DIRECTOR: M. V. ROBERTS. DIRECTORS: C. E. GEORGE. Wm THIRTLE. ENGINEERS 60/66, ROCHESTER ROW,… | ||
| scan0071 | Request to produce two more sets of semi-split skirt pistons for the Bentley. | ||
| View original record | r236 To EHC. from Hs/Rm. Hs/Rm.15/KT.27.9.33. SEMI SPLIT SKIRT PISTONS FOR THE BENTLEY. r236 Will you please produce two more sets of pistons to Lec.3493 and bring them up to the grinding stage, so… | ||
| scan0072 | Confirming the production of two sets of gudgeon pins with no interference fit. | ||
| View original record | K236 To RHC. from Hs/Rm. Hs/Rm.16/KT. 27.9.33. GUDGEON PINS WITH NO INTERFERENCE FIT. This is to confirm that you will produce two sets of gudgeon pins in KE.965, which will be erected with no… | ||
| scan0073 | Letter from The Light Production Co. Ltd. regarding a delay in producing experimental Aerolite Pistons due to foundry defects. | ||
| View original record | LIGHT x236. THE LIGHT PRODUCTION CO. LTD. PROPRIETORS OF THE LONDON PISTON RING CO. LTD. CHAIRMAN & MANAGING DIRECTOR: M. V. ROBERTS. DIRECTORS: C E GEORGE. W M THIRTLE. TELEPHONE:- VICTORIA 0671. 5… | ||
| scan0074 | Page 2 of a letter from The Light Production Co. Ltd. regarding casting defects and delays with pistons. | ||
| View original record | - 2 - although the crown portion is quite sound, the casting defects referred to, appear almost throughout the whole of the skirt portion. We trust that this unfortunate delay will not prove of… | ||
| scan0075 | Modifications to the Bentley Semi-Split Piston to prevent seizing, due to oil shortage and incorrect clearance. | ||
| View original record | K236. To Hs. from E/JNR. E/JNR2/HP.10.10.33. c. RHC | ||
| scan0076 | Modifications to the Bentley Semi-Split Piston to address a seizing issue. | ||
| View original record | To Hs. from E/JNR. c. RHC. Hs/Mr Salt. x226 E/JNR2/HP.10.10.33. Bentley Semi-Split Piston - LeC.3493. Owing to the seizing of one of these pistons, which we think is partly due to the shortage of oil… | ||
| scan0077 | Letter to The Light Production Co. Ltd. regarding the increased weight of supplied pistons for a Bentley engine. | ||
| View original record | V236 Experimental Dept. Hs/Gry.10/KT. October 17th 1933. The Light Production Co. Ltd., 60/66 Rochester Row, Westminster. London. S.W.1. For the attention of Mr.Brooks. Dear Sirs, We thank you for… | ||
| scan0078 | Letter regarding the dispatch of twelve Aerolite experimental pistons for testing in a Bentley engine. | ||
| View original record | THE LIGHT PRODUCTION CO. LTD. PROPRIETORS OF THE LONDON PISTON RING CO. LTD. ENGINEERS 60/66, ROCHESTER ROW, WESTMINSTER, S.W.1. ENG. CHAIRMAN & MANAGING DIRECTOR: M. V. ROBERTS. DIRECTORS: C E… | ||
| scan0079 | Page 2 of a letter from The Light Production Co. Ltd. regarding gudgeon pin fit. | ||
| View original record | - 2 - You will notice that the gudgeon pin fit is much easier than that used in your own design and the pins are quite free when the piston is slightly warm. This is the correct fit for Aerolite, and… | ||
| scan0080 | Report investigating trouble with piston knocks on Bentley engine units. | ||
| View original record | FILES: X-36 18.10.33. BENTLEY PISTON KNOCKS. We have recently been experiencing trouble with piston knocks on Bentley units. The trouble has been confined to No's 6 & 7 units on the test beds, and in… | ||
| scan0081 | Piston testing, comparing different heat treatments, dimensions, and grinding specifications to diagnose engine knocking. | ||
| View original record | -2- XX We have taken from production a set of pistons to EB.1025 which are the present standard Bentley piston and grinding of which is similar to those used by GWH. in No.4. unit, the heat treatment… | ||
| scan0082 | Future testing procedures for pistons, including hardness checks at various points. | ||
| View original record | -3- similar to that now used on production (i.e. EB.1025) and they are quite alright having done many hard runs on the road and at Brooklands, these pistons of course had the standard heat treatment.… | ||
| scan0083 | 24-hour endurance test for Bentley piston development, detailing a piston seizure and planned modifications. | ||
| View original record | X236 To E. from Hs/CTS. c. Wor. By. c. MX. Hs/CTS.1/KT.18.10.33. BENTLEY - PISTON DEVELOPMENT. B.1 Unit. LeC.3493. LOP.EB.513. { EB.602 Piston. { EB.603 Piston Grinding. After the usual running in… | ||
| scan0084 | Confirming arrangements to test Bentley Trials cars for deterioration and requesting information on detecting piston failure. | ||
| View original record | S/W....Hs. c.to Wor. X23/e C12/C18.10.33 I confirm our conversation yesterday regarding the Bentley Trials cars, viz. that you will arrange for Bn. to take the Trials cars to Ascot and try them over… | ||
| scan0085 | Letter from The Light Production Co. Ltd. concerning the weight and design of Bentley pistons. | ||
| View original record | THE LIGHT PRODUCTION CO. LTD. PROPRIETORS OF THE LONDON PISTON RING CO. LTD. v234 CHAIRMAN & MANAGING DIRECTOR: M. V. ROBERTS. DIRECTORS: C. E. GEORGE. WM. THIRTLE. ENGINEERS 60/66, ROCHESTER ROW,… | ||
| scan0086 | Letter from The Light Production Co. Ltd. discussing experiments with smaller bores. | ||
| View original record | - 2 - this has not taken place, although it is admitted that these cases had reference to smaller bores than yours. However, we are pleased to note that you will determine this point by actual… | ||
| scan0087 | Piston failure in a 3 1/2 Litre Bentley and the potential need for a radical design change. | ||
| View original record | To Wor. From Hs. c. to C. c. to E. c. to Hy. c. to Bn. Re. 3 1/2 LITRE BENTLEY. The car has returned from France and came back under its own power with number six connecting rod and piston removed. We… | ||
| scan0088 | The diagnosis and procedure for piston trouble and knock. | ||
| View original record | x236 To C. from Hs/Rm. c. to Wor: Hs/Rm.16/KT. 20.10.33. With reference to C12/C18.10.33. The only signs of piston trouble wxx that will be apparent to the drivers is the piston knock which is there… | ||
| scan0089 | Letter to The Light Production Co. Ltd. regarding a seized Aerolite piston during a test bed run. | ||
| View original record | Y 536 Experimental Dept. Hs/Gry.7/KT. Oct 21st 1933. The Light Production Co. Ltd., 60/66 Rochester Row, Westminster, London, S.W.1. For the attention of Mr. Brooks. Dear Sir, We have run a set of… | ||
| scan0090 | Telegram confirming a visit for the following day at 2:30 PM. | ||
| View original record | POST OFFICE TELEGRAPHS. X236. 155 Charges to pay RECEIPT From: SLOUGH T 14 Recipient: ROYCAR DERBY Office Stamp: DERBY 23 OC 33 3 10P To: Dy / 320 YOUR LETTER HS/GRY 7 /KT WILL VISIT YOU TOMORROW 2.30… | ||
| scan0091 | The performance of gudgeon pins with a sliding fit in Aerolite pistons. | ||
| View original record | X236. To E. from Hs/Rm. C. Wor. By. Hs/Rm.1/KT.24.10.33. X.L.90 GUDGEON PINS WITHOUT INTERFERENCE FIT. Referring to E.8/HP.26.9.33. We have run over 20 hours at speeds between 4000 and 4500 R.P.M.… | ||
| scan0092 | Letter from the Experimental Department regarding the despatch and examination of pistons. | ||
| View original record | X 2-6 Experimental Dept. Hs/Rn.6/KT. Oct 25th 1933. The Light Production Co. Ltd., Bucking Avenue, Trading Estate, Slough. For the attention of Mr.Brooks. Dear Sirs, We have today despatched to you by… | ||
| scan0093 | Page two of a letter to Light Production Co. with a handwritten note regarding scrapped pistons. | ||
| View original record | Light Production Co. -2- experienced so far. Yours faithfully, FOR ROLLS-ROYCE LIMITED. * One scrapped when pistons seized. Five only sent. | ||
| scan0094 | The despatch of failed Aerolite pistons and gudgeon pins for examination to the Light Production Co. Ltd. | ||
| View original record | Y 2 3 6 To G/Mt. from Hs/Rm. c. D/BP. ROY. Hs/Rm. 5/KT. 25.10.33. We are sending into the stores for despatch to the Light Production Co. Ltd., Bucking Avenue, Trading Estate, Slough, for the… | ||
| scan0095 | Urgent internal memo regarding the replacement of cracked Aerolite pistons and gudgeon pins. | ||
| View original record | 226. URGENT. To RHC. from Hs/Rm. Hs/Rm.12/KT. 25.10.33. AEROLITE PISTONS. Will you please let me have - (1) Aerolite piston shewing small crack in skirt Ø (2) Six of the twelve gudgeon pins available.… | ||
| scan0096 | Sending drawing LeC.3675 for a strengthened Bentley piston. | ||
| View original record | X236 To BY. from E/JNR. c. Hs. E/JNR.1/HP.25.10.33. Bentley Piston. We send you herewith a drawing: LeC.3675 shewing the piston strengthened at the gudgeon pin bosses. E/JNR. | ||
| scan0097 | Investigation into failures on Bentley pistons and proposing a modification. | ||
| View original record | x236. To [s]WOR[/s]. from E. c. Hs. [s]By. Sft.[/s] NHC. Bentley Pistons. Referring to pistons taken from the 10,000 mile car, Experimental Department have found a crack on the top side of one of the… | ||
| scan0098 | Endurance test report for Aerolite pistons on a Bentley No. 7 unit. | ||
| View original record | FILES ----- (2b) 25.10.33. -------------- AEROLITE PISTONS (BENTLEY NO. 7 UNIT). We have recently completed 21 hrs. endurance on Aerolite pistons on the above Bentley unit. The endurance consisted of… | ||
| scan0099 | Piston endurance testing, detailing failures, inspections, and subsequent modifications. | ||
| View original record | -2- The pistons ran quite alright for the first half hour (4000 r.p.m.) of the endurance, but towards the end of the second run at 4250 r.p.m. No.6. piston seized, the total full throttle running… | ||
| scan0100 | Engine endurance testing, detailing piston seizure, cracking, and oil temperature trials. | ||
| View original record | -3- The engine turned quite freely by hand but there was a definite loss of compression in No.4. cylinder. From the figures taken during the run we are inclined to think that the piston seized at… | ||
| scan0101 | Engine endurance run detailing oil consumption, a crankcase crack, and S.U. carburetter washer failure. | ||
| View original record | -4- The oil consumption measured over a period of 17½ hrs. was 10 pints, which assuming an average speed of 85 m.p.h. gives an oil consumption of 1200 m.p.g. This consumption is exceptionally good… | ||
| scan0102 | Sketch showing how a gudgeon pin forced an Aerolite (Bentley) piston to one side of the bore. | ||
| View original record | B.V. 7. DIAGRAM I SKETCH SHOWING HOW GUDGEON PIN FORCED PISTON TO ONE SIDE OF BORE AEROLITE PISTON (BENTLEY) RLH 25-10-33 | ||
| scan0103 | Sketch showing a crack in an Aerolite piston. | ||
| View original record | B.V.8 CRACK HERE DIAGRAM 2. PRESSURE SIDE SKETCH SHOWING CRACK IN AEROLITE PISTON 5.5.39 | ||
| scan0104 | Sketch showing a crack in the crankcase of a B.7 unit after 17 hours of operation. | ||
| View original record | B.V. 9 CRANKCASE CRACKED HERE OFF SIDE OF ENGINE DIAGRAM 3 SKETCH SHOWING CRACK IN CRANKCASE OF B.7 UNIT AFTER 17 HOURS | ||
| scan0105 | Performance graph showing B.H.P and B.M.E.P. against R.P.M. for a Bentley No. 7 Unit with Aerolite pistons after an endurance test. | ||
| View original record | BENTLEY No 7 UNIT B.V.10 AEROLITE PISTONS. SPECIFICATION RHC/WSC.S/AP 23-10-33 COMPRESSION RATIO :- 6.4 : 1 POWER CURVE AFTER 21 HOURS ENDURANCE B.H.P. B.M.E.P. (Lbs/sq in) R.P.M. VALVE TIMING (.020… | ||
| scan0106 | Blueprint detailing the dimensions of Aerolite pistons before and after modification. | ||
| View original record | AEROLITE PISTONS BOTH SIDES RELIEVED DIMENSIONS OF PISTONS AS RECEIVED NOTE! PISTONS WERE RELIEVED BY R.R. TO THE EXTENT OF .004 ON DIA WHERE SHOWN SHADED AND .007 ON DIA WHERE SHOWN CROSS HATCHED… | ||
| scan0107 | Failures of gudgeon pins and pistons due to interference fit and proposing alternative solutions. | ||
| View original record | X236 To Hs/Rm. from E. E.6/HP.25.10.33. c. Wor. By. RHC. Gudgeon Pins without interference fit. Replying to Hs/Rm.1/KT.24.10.33. and referring to our interview with the Aerolite Piston representative,… | ||
| scan0108 | 3 1/4 litre Bentley Piston Failure, its cause, and proposed solutions. | ||
| View original record | Y 236 To Wor. From Hs. c. to C. c. to E. c. to Ey. c. to En. Hs.S/MJ.26.10.33. XUVY3~ 3 1/4 litre Bentley Piston Failure. We are glad to say that we are now able to form a very definite idea of the… | ||
| scan0109 | 3 1/2 litre Bentley piston failures and subsequent testing at Brooklands. | ||
| View original record | To Wor. From Hs. c. to C. c. to E. c. to By. c. to En. 8-36. Rs.S/HJ,26.10.33. Re. 3 1/2 litre Bentley Piston Failures. We have just received a telephone message from Hancock that he has reproduced… | ||
| scan0110 | Confirming the use of the standard piston treatment for the Bentley chassis, as a new treatment has not been successfully tested. | ||
| View original record | RHC X 236 c. E. Dept. c. Hl. c. Hs. c. USt. -------------------- BY.11/J.26.10.33. Pistons - Bentley Chassis. -------------------- In view of the fact that we have not run any pistons successfully… | ||
| scan0111 | Type of piston with an improved gudgeon pin boss to be used for tests at Brooklands. | ||
| View original record | To E. From Hs. 236 Hs.7/MJ.26.10.33. We have to make a decision whether the pistons with the improved gudgeon pin boss shall be run as the standard split type, or the semi split type. We have run 15… | ||
| scan0112 | Letter from The Light Production Co. Ltd. regarding the receipt of pistons, gudgeon pins, and a blueprint, and the despatch of standard channel scraper rings. | ||
| View original record | X23le THE LIGHT PRODUCTION Co. LTD. PROPRIETORS OF THE LONDON PISTON RING CO. LTD. ENGINEERS CHAIRMAN & MANAGING DIRECTOR: M. V. ROBERTS. DIRECTORS: E. E. GEORGE. W. THIRTLE. 60/66, ROCHESTER ROW,… | ||
| scan0113 | Letter from The Light Production Co. Ltd. regarding alterations to casting equipment to achieve weight savings. | ||
| View original record | - 2 - desired result can be brought about by retaining this at its full dimension, but by introducing a change of form coupled, at the same time, with less drastic oil control. We have made… | ||
| scan0114 | The material selection for gudgeon pins without interference fit for aero engines. | ||
| View original record | Rm E. Hs/Rm. X236. BY.4/G.26.10.33. GUDGEON PINS WITHOUT INTERFERENCE FIT. We note from Hs/Rm.1/KT. 24.10.33. the results of running pistons with gudgeon pins which could be pushed in cold by hand.… | ||
| scan0115 | Agreement for a limited production run of Bentley Pistons to the latest design. | ||
| View original record | E. from Sft. C. Wor. C. Hs. Cc By. X236 Sft8/BH.26.10.33. Bentley Pistons. With regard to the Bentley Pistons, Wor. has agreed that in order to keep Production moving, we may make a limited number of… | ||
| scan0116 | Calculating the loads and pressures related to a Bentley piston failure. | ||
| View original record | X236 To E. from Hs/Rm. Hs/Rm.2/KT.27.10.33. PISTON FAILURE BENTLEY. Referring to our conversation, taking (a) Piston weight 1 lb., (b) Piston weight above gudgeon pin .8 lbs., (c) Maximum inertia at… | ||
| scan0117 | Expressing pleasure that the cause of 3 1/2-litre Bentley piston failures has been identified. | ||
| View original record | X2-36. S/W.....Hs. c. to Wor. E. By. Bn. ----- C3/C27.10.33 Re 3 1/2-litre Bentley Piston Failures. Hs3/MJ26.10.33 ----- I am very pleased to hear that you have been able to form a definite idea of… | ||
| scan0118 | Investigating a 3½ Litre Bentley engine failure, concluding it was caused by an exhaust valve, not the piston. | ||
| View original record | To Wor. From Hs. c. to C. c. to R. c. to Ry. c. to Rn. c. to EP. c. to EX. γ 2316 Hs.1/MJ.28.10.33. X788 Re. 3½ Litre Bentley Piston Failures. We have now had a chance of examining the engine which… | ||
| scan0119 | Instruction to revert to the original heat treatment for pistons following a failure analysis at Brooklands. | ||
| View original record | X=236, c.RMC. c.Hs. c. Sft/Mr Edwards. c Sft/Mr Goodall c. Sft/Mr. Pendlebury. c. UD c. E. Dept. BY.1/J.31.10.33. Bentley Pistons. Will you kindly note that it has now been demonstrated that the… | ||
| scan0120 | Letter from The Light Production Co. Ltd. discussing the contour of a piston after an endurance test. | ||
| View original record | THE LIGHT PRODUCTION Co. Ltd. PROPRIETORS OF THE LONDON PISTON RING CO. LTD. ENGINEERS CHAIRMAN & MANAGING DIRECTOR: M. V. ROBERTS. DIRECTORS: C. E. GEORGE. WM THISTLE. TELEPHONE:- VICTORIA 0671. 8… | ||
| scan0121 | Letter from The Light Production Co. Ltd. discussing piston adjustments, grinding, and potential issues like cold taps. | ||
| View original record | - 2 - With the piston in the form as obtained by your adjustment, there is no doubt the effective life would be short and we should certainly expect you to experience cold tap. We do feel, however,… | ||
| scan0122 | Graph showing pressure face diameter reductions given by different standard cam forms. | ||
| View original record | TAKEN AT 68° F. GRAPHS OF PRESSURE FACE DIAMETERS GIVEN BY STANDARD CAM FORMS. REDUCTION OF DIAMETER. MAJOR AXIS. DEGREES FROM MAJOR AXIS. Nº 10 CAM. Nº 12 CAM. Nº 14 CAM. Approx Position of R.R.… | ||
| scan0123 | Letter from the Experimental Department regarding Aerolite pistons and the RR.53 alloy. | ||
| View original record | x236. Experimental Dept. Hs/Rn.13/KT. November 1st 1933. The Light Production Co. Ltd., 60/66 Rochester Row, Westminster, London, S.W.1. For the attention of Mr.Brooks. Dear Sir, Many thanks for your… | ||
| scan0124 | Drawings for an experimental forged aluminium connecting rod and a piston for a Bentley. | ||
| View original record | To-BY. from E/JNR. c. Wor. Hs. NHC. X236 E/JNR.2/HP.1.11.33. re Bentley. We send you herewith drawing of: LeC.3682 - Forged aluminium connecting rod. 3679 - Piston with large diameter piston pin.… | ||
| scan0125 | Receipt, modification, and testing of Aerolite pistons. | ||
| View original record | 82-36. To RHC. from Hs/Rn. Hs/Rn.5/KT.2.11.33. AEROLITE PISTONS. We have just received a set of Aerolite pistons with grinding modified on the strength of our previous experience with the last set,… | ||
| scan0126 | Cover note for a record of running times for Duralumin connecting rods and strengthened pistons sent for inspection. | ||
| View original record | To RHC. from Hs/Rm. Hs/Rm.4/KT.2.11.33. Herewith record of running times of the Duralumin connecting rods Ex.12396, and strengthened pistons to LeC.3675 for inspection. Hs/Rm. | ||
| scan0127 | Endurance test results for duralumin connecting rods and strengthened pistons. | ||
| View original record | ENDURANCE ON DURALUMIN CONNECTING RODS (EX.12396). 6 hrs. 0 mins. at 4000 R.P.M. Full Throttle. 5 hrs. 0 mins. " 4250 " " 0 hrs. 50 mins. " 4500 " " 10 hrs. 30 mins. " 2500 " Light Load. 3 hrs. 30… | ||
| scan0128 | Charts showing dimensions and average weights of a second batch of Aerolite pistons compared to Bentley Pistons. | ||
| View original record | X236 To Hs/Rm. from RHC. RHC.6/BE3.11.33. Aerolite Pistons Herewith, charts shewing dimensions of second batch of Aerolite pistons and average weights as compared with Bentley Pistons to LeC 3675.… | ||
| scan0129 | Table of dimensions for Aero-Lite Pistons from the 2nd delivery, with accompanying diagrams. | ||
| View original record | AERO-LITE PISTONS (2ND DELIVERY) DIMENSIONS AS RECEIVED. TAKEN AT POSITIONS SHOWN WIDTH OF BEDDING 1.200 TABLE OF DIMENSIONS: PISTON Nº | A | B | C | D | E | F | G | H | I | J | K --- | --- | --- |… | ||
| scan0130 | Blueprint of an Aerolite Piston with multiple views and dimensions. | ||
| View original record | Ex 12610 3.232 DIA 3.000 DIA (Two TOP GROOVES) .025 AT 45° 2.975 DIA 3.208 DIA 3.137 3.400 4.270 4 HOLES .153 DIA B SCRAP SECTION BB 1.500 1.420 2.18 R 3.12 R 300 R BORED 1.892 DIA FOR A DEPTH OF .230… | ||
| scan0131 | Record of piston measurements taken before and after a 6,000-mile endurance test. | ||
| View original record | BENSPORT No 4 TEST IN FRANCE MEASUREMENT OF PISTONS (a) PRIOR TO TEST (b) AFTER 6,000 MILES TEST PISTON E.B. 495 GROUND TO Ex 11480 ROLLS-ROYCE, LTD. PRINT ROOM 25 OCT 1933 DERBY. TABLE DATA: No |… | ||
| scan0132 | Letter from The Light Production Co. Ltd. discussing the performance of Aerolite Pistons in relation to horsepower and oil temperature. | ||
| View original record | pu 36 THE LIGHT PRODUCTION CO. LTD. PROPRIETORS OF THE LONDON PISTON RING CO. LTD. CHAIRMAN & MANAGING DIRECTOR: M. V. ROBERTS. DIRECTORS: C E GEORGE, WM THIRTLE. ENGINEERS 60/66, ROCHESTER ROW,… | ||
| scan0133 | Page two of a letter from The Light Production Co. Ltd. regarding the properties of alloys for pistons. | ||
| View original record | - 2 - a higher temperature, but as you suggest, we should be inclined to assume that the additional heat would be taken more readily by the water jacket than the oil mist. Any doubts on this… | ||
| scan0134 | Comparison table of physical properties for materials RR.53 and Aerolite 122. | ||
| View original record | | | RR.53 | Aerolite 122. | |---|---|---| | Ultimate tons per sq.in. | 23 | 18 | | Elongation % | 1% | Less than 1% | | Brinell - normal temperature | 130 - 150 | 115 - 145 | | Brinell - @ 300° C. |… | ||
| scan0135 | Comparative table of weights for R.R. and 'Aerolite' Bentley pistons and their components. | ||
| View original record | COMPARATIVE WEIGHTS R.R. AND "AEROLITE" BENTLEY PISTONS ROLLS-ROYCE, LTD PRINT ROOM 3 NOV 1933 DERBY. TYPE OF PISTON WEIGHT OF PISTON BARE WEIGHT OF RINGS WEIGHT OF GUDGEON PIN TOTAL WEIGHT AEROLITE… | ||
| scan0136 | Telegram to The Light Production Co. Ltd. regarding a piston and valve failure and a request for replacements. | ||
| View original record | Mr. Brooks, The Light Production Co. Ltd., 60/66 Rochester Row, Westminster. S.W.1. [Handwritten] X236 [Handwritten] H/B. 6.11.33. BROOKS. NAPOLEONIC. SOWEST. LONDON. PISTON SMASHED THROUGH VALVE… | ||
| scan0137 | Order for Aerolite and RR.53 alloy pistons for Bentley tests. | ||
| View original record | Y 2=6. To ROY. from Hs/Rm. c. to Wor. Hs/Rm.10/KT.7.11.33. Further to our Hs/Gry.6/KT.7.9.33, will you please pass an order to the Light Production Co. for 14 Aerolite pistons as per attached invoice.… | ||
| scan0138 | Letter to The Light Production Co. Ltd. confirming an order for pistons and requesting the urgent delivery of a further six for endurance testing. | ||
| View original record | X236 Experimental Dept. Hs/Rm.12/KT. November 7th 1933. The Light Production Co. Ltd., 60/66 Rochester Row, Westminster, London. S.W.1. For the attention of Mr.Brooks. Dear Sirs, Confirming our… | ||
| scan0139 | Requesting the despatch of 6 gudgeon pins to the Light Production Co. to be fitted to a set of Aerolite pistons. | ||
| View original record | To D/RP. from RHC/EM. c. Hs/Rm RHC/EM4/MS8.11.33. We are sending into the Despatch Stores to-night:- 6 - Gudgeon Pins. Will you please arrange for these to be despatched to the Light Production Co.,… | ||
| scan0140 | The testing and failure analysis of Aerolite pistons, detailing two separate tests and modifications made between them. | ||
| View original record | X296. To E. From Hs/Rm. C. Wor. By. C. MX. AEROLITE PISTONS. The makers of these pistons supply M.G's who have had a remarkable run of racing successes. We have had a few thousand miles experience of… | ||
| scan0141 | Summary of test results for the Aerolite piston, noting its durability, power increase, and susceptibility to cold knocks. | ||
| View original record | -2- Hs/Rm.2/KT. 8.11.33. appreciably worse as the test proceeded. We found that this cyl. bore was slightly oversize. We have had similar knocks on our own flexible skirt pistons when run under very… | ||
| scan0142 | Performance graph comparing different Aerolite pistons against standard split skirt pistons. | ||
| View original record | AEROLITE PISTONS B.V.10. SPECIFICATION - B.Z. UNIT RHC/WSC.S/A.P. 23-10-33 (ORIGINAL PISTONS 19.0 ozs) SPECIFICATION - B.Z. UNIT RHC/WSC.3/A.P. 6-11-33 (2ND SET PISTONS 18.0 ozs) * ① ORIGINAL AEROLITE… | ||
| scan0143 | Letter from The Light Production Co. Ltd. regarding the dispatch of replacement pistons and further orders. | ||
| View original record | X236 THE LIGHT PRODUCTION Co. LTD. PROPRIETORS OF THE LONDON PISTON RING CO. LTD. CHAIRMAN & MANAGING DIRECTOR: M V. ROBERTS. DIRECTORS: C E GEORGE. WM THIRTLE. ENGINEERS 60/66, ROCHESTER ROW,… | ||
| scan0144 | Results of piston testing, comparing different types, their performance, and failures. | ||
| View original record | X236 To Sg. from Hs/Rm. c. Wor. C. c. E. By. c. Mx. PN. c. Bn. Hs/Rm.10/KT.10.11.33. BENTLEY PISTON POSITION. We attach a chart showing the test running carried out on pistons up to date. Briefly the… | ||
| scan0145 | Test-bed work log comparing the performance and failure points of six different piston designs. | ||
| View original record | TEST-BED WORK. HOURS RUN PISTON | UNIT | FAILURE ROW 1 PISTON: PIECE No E.B. 495, F/P 404 DIE CAST., Mx. BEDDING, SHRUNK-ON GUD. PINS UNIT: SPEC: C.XII, RHC./WSCG/AP 8-8-33, CYL. BLOCK, SHORT TYPE… | ||
| scan0146 | Test bed work chart detailing piston development and failure analysis for the 3 1/2 Litre Bentley engine. | ||
| View original record | PISTON DEVELOPMENT. 3 1/2 LITRE BENTLEY. (TEST BED WORK.) HS 1200 PISTON | UNIT | HOURS RUN | FAILURE ROW 7: PISTON: PIECE N° E.B. 1299, A/P. 404 DIE CAST, SPECIAL HEAT TREAT (CHILLED FROM THE DIE),… | ||
| scan0147 | Chart detailing piston development and failure analysis for a 3½ Litre Bentley engine. | ||
| View original record | FEBRUARY TO NOVEMBER 1933 PISTON DEVELOPMENT. 3½ Litre. BENTLEY. (FRANCE) H.S. 1198 TABLE COLUMNS: PISTON, UNIT, MILES RUN (1000 to 10,000), FAILURE ROW A: PISTON: PIECE No E.56610 C'CASE ALLOY.… | ||
| scan0148 | Chart tracking the road work development and testing of different pistons for the 3 1/2 Litre Bentley. | ||
| View original record | TITLE: PISTON DEVELOPMENT. 3 1/2 LITRE BENTLEY. (ROAD WORK.) TABLE HEADERS: PISTON | UNIT | MILES RUN (1000-10000) | FAILURE ROW E: PISTON: PIECE N°. E.B. 1026, A/P. 404. DIECAST, GRINDING E.B. 1025,… | ||
| scan0149 | Negative impact of a chilling operation during piston heat treatment on engine life. | ||
| View original record | X23C To By. from Hs/Rm. c.c. to E. c.c. to Hi. Hs/Rm.16/KT.14.11.33. HEAT TREATMENT OF PISTONS. We have now proved conclusively to our own satisfaction that the heat treatment of pistons which… | ||
| scan0150 | Letter to a supplier regarding the supply and design modification of Aerolite pistons and piston rings. | ||
| View original record | X 23/6 Experimental Dept. Hs/Rm.13/KT. November 14th 1933. The Light Production Co. Ltd., 60/66 Rochester Row, Westminster, London, S.W.1. For the attention of Mr.Brooks. Dear Sirs, We received the… | ||
| scan0151 | Design changes for new Bentley pistons, LeC.3698 and 3699. | ||
| View original record | To BY. from E/JNR. c. Mr. Hs. WS. re Bentley Pistons. We send you herewith: LeC.3698 Split Skirt Piston. 3699 Semi-split Piston. It should be noted that both these pistons can be made from the same… | ||
| scan0152 | Inspection and chalk testing of pistons for a 10,000 miles test. | ||
| View original record | XZ-6 To RHC. from Hs/Rm. Hs/Rm.5/KT.16.11.33. PISTONS FOR 10,000 MILES TEST. While you have the unit for the 10,000 miles test car stripped (B.8 unit), will you please ensure that the pistons are… | ||
| scan0153 | Letter from The Light Production Co. Ltd. regarding the supply of RR.53 alloy pistons and a query about reducing major axis clearance. | ||
| View original record | THE LIGHT PRODUCTION Co. LTD. PROPRIETORS OF THE LONDON PISTON RING CO. LTD. ENGINEERS CHAIRMAN & MANAGING DIRECTOR: M. V. ROBERTS. DIRECTORS: C. E. GEORGE. WM THIRTLE. TELEPHONE:- VICTORIA 0671. 6… | ||
| scan0154 | Letter discussing the optimal arrangement of scraper rings for RR.53 pistons. | ||
| View original record | - 2 - In respect to scraper rings, we are arranging for the RR.53 pistons to be fitted with rings having lands equal in width to 50% of the total width of the ring. The first rings you had were… | ||
| scan0155 | Letter to The Light Production Co. Ltd. discussing piston clearances and cold knocking. | ||
| View original record | 1236 Experimental Dept. Hs/Rm.6/KT. November 18th 1933. The Light Production Co. Ltd., 60/66 Rochester Row, Westminster, London. SW.1. For the attention of Mr.Brooks. Dear Sirs, Thank you for your… | ||
| scan0156 | Invoice from The Light Production Co. for slotted scraper rings for Aerolite pistons. | ||
| View original record | Mr. Robotham. c. to G/Mt. [Handwritten Signature: Ruy] [Handwritten: x236] G/Gn/EM.10/DN.18.11.33. The Light Production Co. Ltd., London, have rendered an invoice, dated the 26th. ult., in respect… | ||
| scan0157 | Piston rings left by the Light Production Co's representative, authorizing an invoice to be cleared. | ||
| View original record | A236. To G/Gn. from Hs/Rn. C. to G/Mt. Hs/Rn.15/KT.20.11.33. Referring to G/Gn/EM.10/DN.18.11.33. The piston rings in question were left in the Expl. Dept by the Light Production Co's representative.… | ||
| scan0158 | Letter from a supplier discussing manufacturing issues with RR.53 pistons. | ||
| View original record | X236 THE LIGHT PRODUCTION Co. Ltd. PROPRIETORS OF THE LONDON PISTON RING CO. LTD. CHAIRMAN & MANAGING DIRECTOR: M. V. ROBERTS. DIRECTORS: C. E. GEORGE. Wm THIRTLE. ENGINEERS 60/66, ROCHESTER ROW,… | ||
| scan0159 | Letter from The Light Production Co. Ltd. regarding a delay in delivering pistons for RR.53, with a handwritten instruction. | ||
| View original record | - 2 - We are doing what we can with regard to bringing forward the pistons in RR.53, but we are afraid it will be at least another week before we can effect delivery, and we sincerely trust this will… | ||
| scan0160 | Letter to The Light Production Co. Ltd. postponing a test of reduced clearances on pistons. | ||
| View original record | x236 Experimental Dept. Hs/Rm.12/KT. November 23rd 1933. The Light Production Co. Ltd., 60/66 Rochester Row, Westminster, London. S.W.1. For the attention of Mr.Brooks. Dear Sirs, Thank you for your… | ||
| scan0161 | The chalk testing of B3 and B6 Bentley pistons for cracks. | ||
| View original record | To Hs/Rm. from RHC. X236. RHC.1/BE22.11.33. BENTLEY PISTONS B3 and B6 Pistons have been chalk tested for cracks as requested, the attached print shewing the condition of B3 Pistons, out of the Black… | ||
| scan0162 | Report comparing low temperature treatment versus quenching from the die for Bentley pistons to determine methods for increasing longevity. | ||
| View original record | Hs/Rm. E. Wor. C. Hl. Y236 BY.19/G.23.11.33. BENTLEY PISTONS. ---------------- With reference to the variation which has been found in practice between the Bentley pistons which are die cast, allowed… | ||
| scan0163 | Diagram showing cracks found in the webs and bosses of various pistons. | ||
| View original record | BENSPORT UNIT B3 CHASSIS 4 B IV CRACKS IN WEBS AND BOSSES OF PISTONS. PISTONS EB 1299 IN A/R - NOT SPECIALLY TREATED Top Row Annotations (left to right): Nº 1 CRACK EXTENDS ACROSS WEB AND .2" DOWN… | ||
| scan0164 | Results of heat treatment tests on Bentley pistons. | ||
| View original record | X-36 To E. From Hs/Rm. " By. c. to Wor. Hs/Rm.1/KT.24.11.33; c. to Hl. BENTLEY PISTON HEAT TREATMENT. Replying to By18/C.23.11.33; We have now collected our final piece of evidence with regard to… | ||
| scan0165 | Experiences with Bentley and 20/25 pistons, focusing on issues with castings and the benefits of ageing. | ||
| View original record | To Hs. from E. c. Sg. Wor. By. Mx. x236 E.4/HP.28.11.33. Pistons. I have been talking to Mx. about his experiences with Bentley and 20/25 pistons. He has recently taken down two trials car engines,… | ||
| scan0166 | Physical changes in 20/25 pistons due to heat treatment during engine operation, and the importance of a leisurely running-in schedule to prevent stress cracks. | ||
| View original record | - 2 - E.4/HP.28.11.33. ---------------- There is not the slightest doubt that if we took a set of these 20/25 pistons today newly fitted to an engine and opened up more rapidly than our standard… | ||
| scan0167 | Letter to The Light Production Co. Ltd. enquiring about the progress of pistons made from R.R. alloy. | ||
| View original record | Hs/Rm.1/KT. Experimental Dept. December 2nd 1933. The Light Production Co. Ltd., 60/66 Rochester Row, Westminster, London. SW.1. For the attention of Mr. Brooks. Dear Sirs, We should be interested to… | ||
| scan0168 | Letter from The Light Production Co. Ltd. regarding castings that have completed heat treatment and are ready for machining. | ||
| View original record | X236. THE LIGHT PRODUCTION CO. LTD. PROPRIETORS OF THE LONDON PISTON RING CO. LTD. CHAIRMAN & MANAGING DIRECTOR: M. V. ROBERTS. DIRECTORS: C. E. GEORGE. WM THIRTLE. TELEPHONE:- VICTORIA 0671. 5 LINES.… | ||
| scan0169 | Letter from The Automotive Engineering Co Ltd regarding a set of experimental pistons and requesting cylinder bore dimensions. | ||
| View original record | TELEGRAMS: MOTIF, TWICKENHAM. CABLES CODE: BENTLEY, (1ST EDN). SELF ADJUSTING PISTONS TELEPHONES: POPESGROVE 2206, 2207, 2208. THE AUTOMOTIVE ENGINEERING CO LTD DIRECTORS: E. TREVOR WILLIAMS,… | ||
| scan0170 | Letter to a supplier clarifying a piston order and providing Bentley car cylinder bore dimensions. | ||
| View original record | X2 56 Experimental Dept. Hs/Rm.7/KT. December 11th 1933. The Automotive Engineering Co. Ltd., The Green, Twickenham, Middlesex. Dear Sirs, We thank you for your letter of Dec. 8th ref. EW/GW. We… | ||
| scan0171 | Substandard batch of porous Aerolite Pistons, questioning if the material has been altered from the standard RR.50. | ||
| View original record | To Hs/Rm. from RHC. x236. RHC.6/BE11.12.33. Aerolite Pistons The last batch of Aerolite Pistons are not up to the standard previously supplied, the castings being somewhat porous. We can get six… | ||
| scan0172 | Letter from The Automotive Engineering Co Ltd regarding the supply of B.H.B. Pistons for a running test. | ||
| View original record | TELEGRAMS: MOTIF, TWICKENHAM. CABLES CODE: BENTLEY, (1st EDN). SELF ADJUSTING BHB PISTONS x236. TELEPHONES: POPESGROVE 2206. 2207. 2208. THE AUTOMOTIVE ENGINEERING CO LTD DIRECTORS: E. TREVOR… | ||
| scan0173 | Letter to The Automotive Engineering Co. Ltd. deferring the testing of pistons. | ||
| View original record | x236. Hs/Rn.G/KW. 19th December, 1933. Messrs. The Automotive Engineering Co.,Ltd., The Green, Twickenham, Middlesex. Dear Sirs, With reference to your letter of the 12th inst., just at the moment we… | ||
| scan0174 | Table of dimensions for Aero-Lite pistons from the second delivery, with diagrams showing measurement points. | ||
| View original record | AERO-LITE PISTONS (2ND DELIVERY) DIMENSIONS AS RECEIVED. TAKEN AT POSITIONS SHOWN WIDTH OF BEDDING 1.300 2.11.33 PISTON No | A | B | C | D | E | F | G | H | I | J | K 1 | 3.232 | 3.232 | 3.232 | 3.231… | ||
| scan0175 | Issues and proposed modifications for the Bentley exhaust suspension. | ||
| View original record | x2-36. To BY. from E/JNK. c. Hs. Sft-Hly. E/JNK.1/HP.20.12.33. Bentley Exhaust Suspension. In view of one of the four spring pads holding the expansion boxes coming adrift on the last 10,000 miles… | ||
| scan0176 | Letter from The Automotive Engineering Co Ltd regarding the near completion and forwarding of B.H.B. Pistons for testing. | ||
| View original record | TELEGRAMS: MOTIF, TWICKENHAM. CABLES CODE: BENTLEY, (1ST EDN) SELF ADJUSTING PISTONS TELEPHONES: POPESGROVE 2206. 2207. 2208. [Handwritten: X236] THE AUTOMOTIVE ENGINEERING CO LTD DIRECTORS: E. TREVOR… | ||
| scan0177 | Letter to The Automotive Engineering Co. Ltd. acknowledging receipt of pistons for testing. | ||
| View original record | X236 Exptl. Dept. Hs/Rm.17/KW. 27th December, 1933. The Automotive Engineering Co.Ltd., The Green, Twickenham, Middlesex. Dear Sirs, We are in receipt of your letter of the 21st December. We have… | ||
| scan0178 | Standardisation of parts for Bentley pistons, defining heat treatment and hardness to overcome previous failures. | ||
| View original record | RR 755B (SH) (82674, 16-10-33) BM. 3/252/6. X236. Completed 15.1.34 BENTLEY STANDARDISATION of PARTS. Date: 20.12.33. X No. 236. Drawing No. L.C. 3675. Part List E.B.1299. Description of Parts:… | ||
| scan0179 | Alternative piston designs and power increases for Bentley vehicles. | ||
| View original record | J.236 To E. From Hs. c. to Sg. c. to Wor. c. to By. Hs.5/MJ.24.1.34. PISTONS. (BENTLEY). When we were in trouble with pistons several alternative designs of pistons were instructed - LEO.3679, 3698,… | ||
| scan0180 | Letter from The Light Production Co. Ltd. requesting feedback on experimental Aerolite pistons made for test purposes in the Bentley engine. | ||
| View original record | TELEPHONE: VICTORIA 0671 (2 LINES) CODES: A.B.C. 5TH EDITION. ALL COMMUNICATIONS TO BE ADDRESSED TO THE COMPANY. ON ADMIRALTY, WAR OFFICE AND AIR MINISTRY LISTS. THE LIGHT PRODUCTION CO. LTD.… | ||
| scan0181 | Letter to The Light Production Co. Ltd. regarding the ongoing testing of Aerolite Pistons in experimental cars. | ||
| View original record | Exptl. Dept. Hs/Gry. 8/KW. 13th March, 1934. The Light Production Co. Ltd., 60/66, Rochester Row, Westminster, LONDON, S.W.1. For the attention of Mr. Brooks. Dear Sirs, We thank you for your letter… | ||
| scan0182 | Letter to The Light Production Co. Ltd. regarding the testing and performance of different alloy pistons. | ||
| View original record | Exptl. Dept. Hs/Rm.3/KW. 19th April, 1934. The Light Production Co.Ltd., 60-66, Rochester Row, Westminster, LONDON, S.W.1. For the attention of Mr. Brookes. Dear Sirs, Replying to your letter of March… | ||
| scan0183 | Piston technology, referencing Cadillac's use of alumilite treatment and proposing tests on aerolite pistons. | ||
| View original record | -2- Hs/Rm.3/KW.19.4.34. While I was in America I was in close contact with the Cadillac Motor Car Co., who adopted aluminium pistons for the first time last year and they have done an enormous amount… | ||
| scan0184 | Results of a 10,000-mile test on Aerolite pistons and a proposal for standardisation. | ||
| View original record | C O P Y. X236 Sg10/E19.4.34. To Hs. from Sg. copy to Wor. E. By. Da. Bn. EP. Mx. Re. 4-B-IV. 10,000 Miles Test. Thanks for Hs.8/KW.14.4.34 enclosing CWH's report. I should be glad to have a list of… | ||
| scan0185 | Suggestion to test a set of parts on a car for ordinary running, distinct from test mileage. | ||
| View original record | Would it not be as well to get a set on to Bn's car so that they could get some ordinary running as distinct from 10,000 miles test usage. | ||
| scan0186 | The advantages and test results of Aerolite pistons. | ||
| View original record | NOT SENT OUT To Sg. from Hs/Rm. c. to Wor. c. to E. c. to By. c. to Da. c. to Bn. c. to Ev. Hs/Rm.5/KW.28.4.34. AEROLITE PISTONS. Referring to Sg.10/E.19.4.34. The advantages which these pistons have… | ||
| scan0187 | Piston condition after testing and a summary of the advantages and future plans for Aerolite pistons. | ||
| View original record | -2- On dismantling it was found that all the rings and grooves were in excellent condition. The five pistons which had received the severe bench test work had distorted slightly, this being bad enough… | ||
| scan0188 | Technical report on the advantages and testing of Aerolite pistons. | ||
| View original record | To Sg. from Hs/Rm. c.c. to Nor. c.c. to E. c.c. to Hy. c.c. to Dn. c.c. to Hn. c.c. to EV. Hs/Rm.5/KW.30.4.34. AEROLITE PISTONS. Referring to Sg.1C/E.19.4.34. The advantages which these pistons have… | ||
| scan0189 | Letter from The Light Production Co. Ltd. regarding the production, testing, and treatment of piston sets. | ||
| View original record | X236 TELEPHONE: VICTORIA 0671 (6 LINES). CODES: A. B. C. 5TH EDITION. ON ADMIRALTY, WAR OFFICE AND AIR MINISTRY LISTS. ALL COMMUNICATIONS TO BE ADDRESSED TO THE COMPANY. THE LIGHT PRODUCTION CO. LTD.… | ||
| scan0190 | Request to fit standard pistons to engine or component 4-B.IV. | ||
| View original record | <~ 236 To RHC. Hs/Rm.5/KW. 26.4.34. Will you please fit standard pistons to 4-B.IV. Hs/Rm. | ||
| scan0191 | To place an order for two sets of Aerolite Pistons from Light Production Co. Ltd., with one old set being returned for credit. | ||
| View original record | Roy. X236 Hs/Rm.3/KW.27.4.34. Will you please pass an order to the Light Production Co. Ltd, 60/66, Rochester Row, Westminster, S.W.1., for 2 sets of Aerolite Pistons in RR.53 alloy, these pistons to… | ||
| scan0192 | Urgent request to make a Piston Ring Gauge for checking Bentley Piston Rings to improve oil consumption. | ||
| View original record | RHC. K III X 236 Hs/Mths.9/KW.27.4.34. BENTLEY PISTON RINGS. Will you please make as soon as possible Piston Ring Gauge to the attached drawings. This Gauge is urgently required in order that we can… | ||
| scan0193 | Letter to The Light Production Co. Ltd. concerning drawings and the testing of Aerolite pistons in RR.53 alloy. | ||
| View original record | X236 Exptl. Dept. Hs/Rm.14/KW. 2nd May, 1934. The Light Production Co.Ltd., 60-66, Rochester Row, Westminster, London, S.W.1. For the attention of Mr. Brookes. Dear Sirs, We attach the drawings we… | ||
| scan0194 | Correspondence regarding an order for Aerolite Pistons for a Bentley engine, including the 'Alumilite' process and delivery schedule. | ||
| View original record | x236 TELEPHONE: VICTORIA 0671 (8 LINES). CODES: A.B.C. 5TH EDITION. ON ADMIRALTY, WAR OFFICE AND AIR MINISTRY LISTS. ALL COMMUNICATIONS TO BE ADDRESSED TO THE COMPANY. THE LIGHT PRODUCTION CO. LTD… | ||
| scan0195 | Letter to The Light Production Co. Ltd. regarding the despatch of 6 Bentley pistons for examination and proposed modifications. | ||
| View original record | X236 Exptl. Dept. Hs/Rm.11/KW. 5th May, 1934. The Light Production Co.Ltd., 60/66, Rochester Row, Westminster, LONDON, S.W.1. For the attention of Mr. Brookes. Dear Sirs, Thank you for your letter of… | ||
| scan0196 | Power output graph comparing two engine configurations for the 3½ Litre Bentley. | ||
| View original record | UNIT B.48 3½ LITRE BENTLEY POWER OUTPUT SPEC (1) COMP RATIO 6.45:1 (EB-615) IN VALVE EB/64 (1.400 DIA) EX " EB/65 (1.300 DIA) (2) COMP RATIO 6.86:1 (LEC3662) IN VALVE EX/2089 (1.500 DIA) EX " EB/325… | ||
| scan0197 | Experimental department report on the effect of reduced piston friction for Bentley, comparing split skirt and non-split skirt pistons. | ||
| View original record | EXPERIMENTAL DEPARTMENT REPORT 1236 REFERENCE:— Rm/Mths.1/KW.14.5.34. Subject of Report:— Effect of Reduced Piston Friction (Bentley). General Conclusions:— That the split skirt type of piston… | ||
| scan0198 | Trial of semi-split pistons as an intermediate step to their own design, noting a preference for Aerolite pistons. | ||
| View original record | To S G. From Hs/Rm Wor: El Ev: Doy FBL Hs/Rm.2/KT.12.5.34. SEMI SPLIT PISTONS. These pistons represent an intermediate step between Aerolite and our own. We are fitting a set to our next 10,000 miles… | ||
| scan0199 | Power experiments investigating the effect of reduced piston friction by testing modified pistons. | ||
| View original record | Hs/Mths.1/KW.14.5.34. Effect of Reduced Piston Friction (Bentley). Further to our report on Heat Balance Experiments (Hs/Mths.1/KW.13.2.34), we have now completed Power experiments with the following… | ||
| scan0200 | Piston performance, discussing friction, expansion, clearances, and test results for semi-split and Aerolite pistons. | ||
| View original record | -2- It was very noticeable when fitting the semi-split pistons that the friction was considerably less than with standard pistons (E.M.1209), so that at first we expected a considerable increase in… | ||
| scan0201 | Letter from The Light Production Co. Ltd. to the Experimental Dept. regarding modifications to six pistons from a Bentley car. | ||
| View original record | TELEPHONE: VICTORIA 0671 (6 LINES). CODES: A.B.C. 5TH EDITION. ALL COMMUNICATIONS TO BE ADDRESSED TO THE COMPANY. ON ADMIRALTY, WAR OFFICE AND AIR MINISTRY LISTS. THE LIGHT PRODUCTION CO. LTD.… | ||
| scan0202 | Letter from The Light Production Co. Ltd. concerning the return or crediting of pistons. | ||
| View original record | - 2 - visit, to the effect that these pistons should be credited, is no longer desired by you, and that instead, you would like them returned? Either course is agreeable to ourselves, so we shall be… | ||
| scan0203 | Technical drawing of an Aerolite Mark V compensating piston. | ||
| View original record | AEROLITE MARK V COMPENSATING PISTON. PATT: Nº C37. DWG: Nº P220. 1/32" x 45° CHAMFER. 60° 4.270" 2.270" 3/4" DIA TO SUIT PIN 2.000 4.073" 1.365" +.010" 28 28 +.001" +.003" .098" .275" .153" .153"… | ||
| scan0204 | Letter confirming collection arrangements for a set of Aerolite Pistons in R.R.53, with a contingency for potential casting defects. | ||
| View original record | ? Where do we collect - x236 TELEPHONE: VICTORIA 0671 (5 LINES). CODES: A. B. C. 5TH EDITION. ALL COMMUNICATIONS TO BE ADDRESSED TO THE COMPANY. ON ADMIRALTY, WAR OFFICE AND AIR MINISTRY LISTS. THE… | ||
| scan0205 | Letter to The Light Production Co. Ltd. requesting a set of Aerolite Pistons without alumiliting. | ||
| View original record | X23.6 Exptl. Dept. Hs/Rn.21/KW.14.5.34. 14th May, 1934. C.H. Brookes, Esq., The Light Production Co. Ltd., 60/66, Rochester Row, LONDON, S.W.1. Dear Mr. Brookes, We are ready for that set of Aerolite… | ||
| scan0206 | Letter to The Light Production Co. Ltd. concerning piston grinding dimensions and the replacement of pistons. | ||
| View original record | Exptl. Dept. Hs/Rm.18/KW. 15th May, 1934. The Light Production Co. Ltd., 60/66, Rochester Row, Westminster, LONDON, S.W.1. For the attention of Mr. Brookes. Dear Sirs, Thank you for your letter of the… | ||
| scan0207 | Telegram confirming arrangements to collect pistons at Greencoat Place. | ||
| View original record | X236 18.5.34. BROOKES, NAPOLEONIC, SOWEST, LONDON. PRESUME WE COLLECT PISTONS AT GREENCOAT PLACE. ROYCAR. R. Polettham | ||
| scan0208 | Letter from The Light Production Co. Ltd. regarding the despatch of an order for Aerolite Pistons. | ||
| View original record | X236 COPY. The Light Production Co.Ltd., 60/66, Rochester Row, Westminster, S.W.1. 16th May, 1934. ROY/HW.8/RO. JWP/HD. Messrs. Rolls-Royce Ltd., DERBY. Dear Sirs, YOUR ORDER NO. 63332. We are in… | ||
| scan0209 | Request to order two sets of Scraper Rings with a specific width for Aerolite Pistons. | ||
| View original record | Roy. X236 Hs/Rm.2/KW.30.5.34. Will you please order from the Light Production Co. 2 sets of Scraper Rings having a scraper land width of .034". These are for the Aerolite Pistons previously supplied.… | ||
| scan0210 | Request to The Light Production Co. Ltd. for two sets of scraper rings for Aerolite Pistons. | ||
| View original record | 1236 Exptl. Dept. Hs/Rn.3/KW. 30th May, 1934. The Light Production Co.Ltd., 60/66, Rochester Row, Westminster, LONDON, S.W.1. For the attention of Mr. Brookes. Dear Sirs, We are going to run some… | ||
| scan0211 | Request to obtain a cost figure for a dozen sets of Aerolite pistons from the Light Production Co. | ||
| View original record | Roy. X236 Hs/Rn.14/KW.31.5.34. Aerolite Pistons. These pistons have nearly reached the stage where they may be standardised. We are contemplating obtaining a dozen sets. Will you please obtain the… | ||
| scan0212 | Letter to The Light Production Co. Ltd. regarding disappointment with Aluminited Piston castings in RR.50 alloy. | ||
| View original record | X236 Exptl. Dept. Hs/Rm.15/KW. 31st May, 1934. The Light Production Co., Ltd., 60/66, Rochester Row, Westminster. LONDON, S.W.1. For the attention of Mr. Brookes. Dear Sirs, We shall be glad to hear… | ||
| scan0213 | Poor quality of Aerolite Pistons and arrangements for new castings. | ||
| View original record | x236 RHC. Hs/Rm.4/KW.6.6.34. Aerolite Pistons. Confirming our conversation with you, as the last lot of Aerolite Pistons in RR.53 were such poor castings, we asked Mr. Brookes to let us have the core… | ||
| scan0214 | Letter from The Light Production Co. Ltd. regarding the dispatch of an Aerolite Piston in L22 alloy for testing. | ||
| View original record | 4236 TELEPHONE: VICTORIA 0671 (5 LINES). CODES: A.B.C. 5TH EDITION. ALL COMMUNICATIONS TO BE ADDRESSED TO THE COMPANY. ON ADMIRALTY, WAR OFFICE AND AIR MINISTRY LISTS. THE LIGHT PRODUCTION CO.LTD.… | ||
| scan0215 | Advice note from The Light Production Co. Ltd. regarding an Aerolite Piston. | ||
| View original record | ADVICE NOTE. No. S20486 THE LIGHT PRODUCTION Co. LTD. PROPRIETORS OF THE LONDON PISTON RING CO. LTD. TELEPHONE:- VICTORIA 0671. 5 LINES. 60/66, ROCHESTER ROW, WESTMINSTER, S.W.1. ENG. TELEGRAMS:… | ||
| scan0216 | Letter to The Light Production Co. Ltd. concerning a preliminary run and dimension comparison of new pistons. | ||
| View original record | X 236 Exptl. Dept. Hs/Rm.7/KW. 16th June, 1934. The Light Production Co.Ltd., 60/66, Rochester Row, Westminster, LONDON, S.W.1. For the attention of Mr. Brookes. Dear Sirs, We have now had a… | ||
| scan0217 | Communication regarding piston dimensions and the production of new castings. | ||
| View original record | -2- We are confirming these figures, but in the meantime we shall be glad if you could ensure that the pistons which are being aluminited do not have a greater dimension 'I' than 3.247, and the bottom… | ||
| scan0218 | Measurement data for Aerolite pistons and cylinder bores after a 12-hour conning process for a Bentley No. 7 engine. | ||
| View original record | BENTLEY N° 7 - PISTONS AFTER 12 HOURS CONNING (DIMENSIONS TAKEN AT POSITIONS SHEWN) AEROLITE NOS 1, 2, & 4 ARE FULLY CASTINGS PISTON DIAMETERS TABLE 1: | PISTON | A | B | C | D | E | F | G | H | I | J… | ||
| scan0219 | New design for Bentley piston pin buttons for chassis B.126-AH. | ||
| View original record | 4236 To BY. from E/JNR. c. Hs. RHC. E/JNR.5/HP.21.6.34. Piston Pin Buttons - Bentley. Chassis No.B.126-AH. Owing to the aluminium buttons becoming loose in the piston pin on the above car, we have… | ||
| scan0220 | Letter from The Light Production Co. Ltd. regarding piston design, clearances, and performance characteristics. | ||
| View original record | X236 TELEPHONE: VICTORIA 0671 (5 LINES). CODES: A. B. C. 5TH EDITION. ALL COMMUNICATIONS TO BE ADDRESSED TO THE COMPANY. ON ADMIRALTY, WAR OFFICE AND AIR MINISTRY LISTS. THE LIGHT PRODUCTION CO. LTD.… | ||
| scan0221 | Letter from a supplier discussing piston dimensions, casting production, and pricing. | ||
| View original record | - 2 - that brought about by purely increasing the "I" dimension, but the markings on the piston, after a good run, ought to confirm this. At any rate, for further supplies, we will reduce the taper… | ||
| scan0222 | Letter to The Light Production Co. Ltd. regarding the slow progress of a job concerning aluminiting. | ||
| View original record | X236 Exptl. Dept. Hs/Rm.14/KW. 22nd June, 1934. The Light Production Co. Ltd., 60/66, Rochester Row, Westminster, LONDON, S.W.1. For the attention of Mr. Brookes. Dear Sirs, Thank you for your letter… | ||
| scan0223 | Power comparison chart for modified Aerolite pistons and various honed bore dimensions. | ||
| View original record | B7 Unit. x236 Aerolite Pistons modified Grinding A. | R.P.M. | ORIGINAL POWER | POWER WITH BORES HONED +.0005 | POWER WITH BORES HONED +.001 | |---|---|---|---| | | BHP | BMEP | BHP | BMEP | BHP |… | ||
| scan0224 | Letter to The Light Production Co. Ltd. requesting the urgent production of three sets of Bentley Aerolite pistons. | ||
| View original record | X236 Exptl. Dept. Hs/Rn.14/KW. 25th June, 1934. The Light Production Co.Ltd., 6C/66, Rochester Row, Westminster. LONDON, S.W.1. Dear Sirs, Confirming our telephone conversation of to-day's date, we… | ||
| scan0225 | Order be placed for three sets of Aerolite Pistons. | ||
| View original record | Roy. X236 Hs/Rm.20/KW.25.6.34. Will you please pass an order to the Light Production Co. for three sets of Aerolite Pistons. These should be booked to Order No. 54108. Hs/Rm. | ||
| scan0226 | Letter to The Aerolite Piston Co. Ltd. regarding the aluminiting, testing, and despatch of RR.53 pistons. | ||
| View original record | X236 Exptl. Dept. Hs/Rn.19/KW. 3rd July, 1934. Mr. Brookes, The Aerolite Piston Co. Ltd., SLOUGH. Dear Brookes, With reference to the set of RR.53 pistons which you are holding for aluminiting, we… | ||
| scan0227 | Brief communication to Aerolite Piston Co. anxiously awaiting news on pistons. | ||
| View original record | x236 3.7.34. BROCKES, AEROLITE PISTON CO., SLOUGH. ANXIOUSLY AWAITING NEWS OF AEROLITE PISTONS. W. Robotham | ||
| scan0228 | Telegram from Robotham to Brookes requesting an update on Aerolite pistons. | ||
| View original record | x236 4.7.34. BROOKES, VICTORIA 0671, LONDON. PLEASE RING ME NOON RE POSITION OF AEROLITE PISTONS. ROBOTHAM. | ||
| scan0229 | Letter from The Light Production Co. Ltd. regarding the unsuitability of L22 alloy castings and the dispatch of replacement pistons in RR.53. | ||
| View original record | 4236 R.H.C. Please return Noted RHC THE LIGHT PRODUCTION CO. LTD. PROPRIETORS OF THE LONDON PISTON RING CO. LIMITED. TELEPHONE: VICTORIA 0671 (5 LINES). CODES: A.B.C. 5TH EDITION. ALL COMMUNICATIONS… | ||
| scan0230 | Letter from The Light Production Co. Ltd. regarding RR.53 castings and the inclusion of a complimentary refitted piston. | ||
| View original record | - 2 - We are taking steps to produce more castings in RR.53, and will advise you later as to our progress in this matter. Yours faithfully, pp THE LIGHT PRODUCTION CO. LTD. L.P. Brooks. GENERAL… | ||
| scan0231 | Use, benefits, and proposed testing of anodically treated aluminium pistons. | ||
| View original record | To WGR, from Hs/Rn. To E. c.c. to Hl. c.c. to By. c.c. to RMC. c.c. to EJJ. X236 Hs/Rn.3/KW.4.7.34. Anodically Treated Pistons. During the last twelve months anodically treated aluminium pistons have… | ||
| scan0232 | The investigation into anodically treated pistons and related aluminium alloys. | ||
| View original record | Hs/Rm. C.E.Wor [Crossed out] C.E. [Crossed out] C.H. [Crossed out] C.RHC. [Crossed out] C.EJJ. [Crossed out] Rm BY.3/J.5.7.34. Anodically Treated Pistons. With reference to Hs/Rm.3/KW.4.7.34 on the… | ||
| scan0233 | Letter regarding the progress and difficulties of applying anodic treatment to RR.53 alloy pistons. | ||
| View original record | Exptl. Dept. Hs/Rn.6/KW. 7th July, 1934. The Aerolite Piston Co.Ltd., 60/66, Rochester Row, Westminster, LONDON, W.1. For the attention of Mr. Brookes. Dear Mr. Brookes, I have been endeavouring to… | ||
| scan0234 | The second page of a letter urging for a quick response to move a matter forward. | ||
| View original record | -2- Hs/Rn.G/KW.7.7.34. The main point is, I should like to get something moving quickly if this is not so. I should be very much obliged if you could write me by return. Yours faithfully, FOR… | ||
| scan0235 | Letter from The Light Production Co. Ltd. discussing unsatisfactory experimental work on the anodic treatment of RR.53 and RR.52 alloys. | ||
| View original record | Slough 580 x236 TELEPHONE: VICTORIA 0671 (6 LINES). CODES: A.B.C. 5TH EDITION. ALL COMMUNICATIONS TO BE ADDRESSED TO THE COMPANY. ON ADMIRALTY, WAR OFFICE AND AIR MINISTRY LISTS. THE LIGHT PRODUCTION… | ||
| scan0236 | Letter from The Light Production Co. Ltd. discussing the progress and expected results of material treatment. | ||
| View original record | - 2 - necessary for successful treatment of these materials have had to be determined in England. Since receiving your letter, I have had further conversation with them, and they say they are… | ||
| scan0237 | Inquiry to Brookes, Aerolite Pistons Co., regarding when pistons will be ready for collection. | ||
| View original record | X236 9.7.34. BROOKES, AEROLITE PISTONS CO., SLOUGH. PLEASE SAY WHEN PISTONS WILL BE READY FOR COLLECTION. ROBOTHAM. | ||
| scan0238 | Difficulties in getting results from Alumilite Co. Ltd. for the anodical treatment of RR.53 alloy pistons. | ||
| View original record | x 236 To Dy. c.c. to HGR. c.c. to HL. c.c. to HWC. c.c. to EJJ. Ha/Rm.1/KW.12.7.34. Anodically Treating Pistons. Replying to ByS/J.5.7.34. The reason we suggested carrying on with alumiliting… | ||
| scan0239 | Letter discussing a conversation about expected test results from a third party within a fortnight. | ||
| View original record | -2- Hs/Ru.1/KM.12.7.34. Since receiving your letter, I have had further conversation with them, and they say they are definitely very confident of having some results within the next fortnight, and,… | ||
| scan0240 | Quotation for Aerolite Pistons from The Light Production Co. Ltd. | ||
| View original record | Hs/Rm. ROY/MS4/P.12.7.34. AEROLITE PISTONS. In accordance with Hs/Rm.18/KW.5.7.34, we have now received the attached letter and quotation from The Light Production Co. Ltd. Please return same with… | ||
| scan0241 | Authorising the order of Aerolite Pistons for the Spectre. | ||
| View original record | x236 To Roy. Hs/Rn.15/KW.16.7.34. With reference to the Aerolite Pistons for the Spectre we think the price given in their quotation of the 11th July very very reasonable. Will you please order them.… | ||
| scan0242 | Complexities of producing an oxidised coating on anodically treated pistons made from R.R.53 alloy. | ||
| View original record | Rm x236 To Hs/Rm. HL1/AG.21.7.34. Laboratory. Re: Anodically Treated Pistons. (Your ref: Hs/Rm3/KW4.7.34.) We note that you wish to carry out some work on the above treatment, as applied to R.R.53… | ||
| scan0243 | Letter regarding an order for 'Aerolite' Pistons being held in an unground condition awaiting further instructions. | ||
| View original record | 1236 TELEPHONE: VICTORIA 0671 (5 LINES). CODES: A.B.C. 5TH EDITION. ALL COMMUNICATIONS TO BE ADDRESSED TO THE COMPANY. ON ADMIRALTY, WAR OFFICE AND AIR MINISTRY LISTS. THE LIGHT PRODUCTION CO. LTD.… | ||
| scan0244 | Letter to a supplier regarding pistons that have cracked during high-speed running tests. | ||
| View original record | Y236 Expl. Dept. Hs/Rm.21/MJ. 7th. August, 1934. The Light Production Company Ltd., 60/66, Rochester Row, Westminster, S.W.1. Dear Sirs, Thank you for your letter of July 24th. With reference to our… | ||
| scan0245 | Letter from The Light Production Co. Ltd. acknowledging a communication and explaining a delay due to a works holiday closure. | ||
| View original record | TELEPHONE: VICTORIA 0671 (6 LINES). CODES: A.B.C. 5TH EDITION. ALL COMMUNICATIONS TO BE ADDRESSED TO THE COMPANY. ON ADMIRALTY, WAR OFFICE AND AIR MINISTRY LISTS. THE LIGHT PRODUCTION CO. LTD… | ||
| scan0246 | Letter from The Light Production Co. Ltd. concerning piston cracking in 122 alloy and new die modifications for RR.53 castings. | ||
| View original record | TELEPHONE: VICTORIA 0671 (6 LINES). CODES: A. B. C. 5TH EDITION. ALL COMMUNICATIONS TO BE ADDRESSED TO THE COMPANY. ON ADMIRALTY, WAR OFFICE AND AIR MINISTRY LISTS. THE LIGHT PRODUCTION CO. LTD… | ||
| scan0247 | Letter expressing dissatisfaction with the lack of progress from the Alumilite people regarding project RR.53. | ||
| View original record | - 2 - continued silence from the Alumilite people is very discouraging, and we feel very strongly that, in spite of protestations to the contrary, their progress with RR.53 is not satisfactory. The… | ||
| scan0248 | Letter to The Light Production Co. Ltd. concerning the replacement of failed RR.53 pistons and testing an alternative supply for alumiliting. | ||
| View original record | x236 Exptl. Dept. Hs/Rm.9/KW. 27th August, 1934. The Light Production Co.Ltd., 60/66, Rochester Row, Westminster LONDON, S.W.1: For the attention of Mr. Brookes. Dear Sirs, Many thanks for your letter… | ||
| scan0249 | Letter regarding cracked alloy pistons after 15,000 miles of testing and a request for replacements. | ||
| View original record | X 236. Exptl. Dept. Hs/Rm.1/KW. 3rd September, 1934. The Light Production Co,Ltd., 60/66, Rochester Row, Westminster. LONDON, S.W.1. For the attention of Mr. Brookes. Dear Sirs, We have now completed… | ||
| scan0250 | Letter specifying grinding dimensions and arranging a follow-up meeting. | ||
| View original record | -2- Hs/Rm.1/KW.3.9.34. The grinding should be as specified in Hs/Rm.7/KW.16.6.34, that is, the dimension at the top of the skirt of the pressure face, 3.247, and the bottom, 3.2475. In addition to… | ||
| scan0251 | Letter from The Light Production Co. Ltd. discussing cracks in RR.53 castings for Aerolite Pistons. | ||
| View original record | X236 TELEPHONE: VICTORIA 0671 (5 LINES). CODES: A.B.C. 5TH EDITION. ALL COMMUNICATIONS TO BE ADDRESSED TO THE COMPANY. ON ADMIRALTY, WAR OFFICE AND AIR MINISTRY LISTS. THE LIGHT PRODUCTION CO. LTD… | ||
| scan0252 | Alloy casting issues, potential solutions, deliveries, and anodising experiments. | ||
| View original record | - 2 - The cause is associated with the rapid rate of freezing of RR.53, and they do not occur in 122 alloy. After adopting every conceivable artifice to avoid this occurrence, we have concluded that… | ||
| scan0253 | Page three of a letter from The Light Production Co. Ltd. regarding a patent specification and pistons for testing. | ||
| View original record | - 3 - and we understand is covered by Patent Specification No. 359494. No doubt we can decide on Monday to have a complete set of pistons treated for you to test. Yours faithfully, pp THE LIGHT… | ||
| scan0254 | Letter to Mr. Brookes at The Light Production Co. Ltd. discussing the standardisation of Aerolite pistons for Bentley cars. | ||
| View original record | x236 Exptl. Dept. Hs/Rm.2/KW. 6th September, 1934. The Light Production Co.Ltd., 60/66, Rochester Row, Westminster. LONDON, S.W.1. For the attention of Mr. Brookes. Dear Mr. Brookes, I have not as yet… | ||
| scan0255 | Request to measure Aerolite pistons removed from a 10,000-mile Bentley unit. | ||
| View original record | X236 To RHC. c. to Hs/Mths. Hs/Rm.13/KW.17.9.34. Aerolite Pistons. Will you please measure up the Aerolite pistons which we have removed from the 10,000 mile Bentley unit and replaced by another set… | ||
| scan0256 | Requesting the measurement of Aerolite pistons removed from a 10,000 mile Bentley unit. | ||
| View original record | Matthews Should like your comments on these Rm. To RHC. or to Hs/Mths. x236 Aerolite Pistons. out of B7. Will you please measure up the Aerolite pistons which we have removed from the 10,000 mile… | ||
| scan0257 | Table of dimensions for 'Aerolite' pistons taken before and after 10,000-mile trials. | ||
| View original record | B.7. UNIT. DIMENSIONS OF 'AEROLITE' PISTONS TAKEN PRIOR TO & AFTER 10000 MILES TRIALS. TABLE OF DIMENSIONS | | WHEN DIMS. WERE TAKEN | RING LANDS | | | SKIRT | | RING LANDS | | | SKIRT | |… | ||
| scan0258 | Order for two Aerolite Pistons for Bentley from the Light Production Co. Ltd. | ||
| View original record | To Roy. 4236 Hs/Mths.24/KW.18.9.34. Bentley Pistons. Will you please order from the Light Production Co.Ltd. - 2 Aerolite Pistons in R.R.53 Alloy. These pistons should be complete with rings and… | ||
| scan0259 | Request to measure and chalk test Aerolite pistons from Y4BB and B-4 units. | ||
| View original record | x 236 To RHC. Hs/Mths.28/KW.20.9.34. Aerolite Pistons. Will you please make a chart of dimensions in the usual manner of the pistons of Y4BB unit at present in the shop, these pistons are marked B.3.… | ||
| scan0260 | Request to manufacture two sets of Bentley pistons using existing castings based on specific drawings. | ||
| View original record | To RHC. x236 Hs/Mths.14/KW.24.9.34. Bentley Pistons. Will you please have 1 set of pistons made to each of the attached drawings, V.B.46 and V.B.50. Both pistons can be made from existing castings for… | ||
| scan0261 | Letter from The Light Production Co. Ltd. concerning the delivery and specifications of Aerolite pistons. | ||
| View original record | Matthews x236 TELEPHONE: VICTORIA 0671 (6 LINES). CODES: A.B.C. 5TH EDITION. ALL COMMUNICATIONS TO BE ADDRESSED TO THE COMPANY. ON ADMIRALTY, WAR OFFICE AND AIR MINISTRY LISTS. THE LIGHT PRODUCTION… | ||
| scan0262 | Request to manufacture two sets of pistons for Bentley & 20/25 models. | ||
| View original record | x236 To RHC. Hs/Mths.14/KW. 26.9.34. Bentley & 20/25 Pistons. Will you please have one set of pistons made to each of the attached drawings, V.B.46 and V.B.50. Both pistons can be made from existing… | ||
| scan0263 | Arrival and fitting of Aerolite Pistons for the Spectre. | ||
| View original record | To RHC. x236 Hs/Rm. 2/KW. 27.9.34. The Aerolite Pistons have now arrived for the Spectre. We shall be glad if you would fit these. Hs/Rm. | ||
| scan0264 | Requesting orders be placed with the Light Production Co. for two sets of 6 Bentley pistons. | ||
| View original record | x236 To Roy: Hs/Rm.14/KW. 3.10.34. Will you please pass an order to the Light Production Co. for 6. Bentley pistons in RR.53 alloy. These were received on the 28th Sept. Will you also please pass an… | ||
| scan0265 | Invoice for Aerolite Pistons from the Light Production Co. Ltd. | ||
| View original record | Rm Roy. G/Cam/CA.28/JM.2.10.34. We have an invoice from the Light Production Co. Ltd., dated 26th. ulto, for several Aerolite Pistons against Order 67527. Included on this invoice is an item of 6 -… | ||
| scan0266 | Despatch of two Aerolite Pistons to the Light Production Co. Ltd. for examination. | ||
| View original record | To D/BP. from RHC/EM. c. D/BP. c. Hs/RM. +236 Rm RHC/EM.4/BC.10.10.34. to-day:- We are sending into the Despatch Stores 2 Aerolite Pistons complete with rings less gudgeon pins. Will you please… | ||
| scan0267 | To cease work on semi-split type pistons in favour of the successful Aerolite pistons for Bentley and 20/25 models. | ||
| View original record | X236 To RHC. Hs/Rm.12/KW.12.10.34. Semi-Split Type Pistons. We recently sent some instructions through for semi-split pistons for the Bentley and 20/25 with modified grinding. E. has now agreed that… | ||
| scan0268 | Letter concerning a disputed invoice for anodising pistons supplied for experimental work. | ||
| View original record | Handwritten Top: Roy Please return to HS/Rm x236 Typed: Exptl: Dept. Ha/Rm.8/KW. 12th October, 1934. Mr. Brookes, The Light Production Co.Ltd., 60/66, Rochester Row, Westminster, LONDON, S.W.1. Dear… | ||
| scan0269 | Invoice from The London Piston Ring Co., Ltd. for anodising 6 pistons. | ||
| View original record | INVOICE. THE LIGHT PRODUCTION CO., LTD., PROPRIETORS OF THE LONDON PISTON RING CO., LTD. CHAIRMAN & MANAGING DIRECTOR: M. V. ROBERTS. DIRECTORS: C. E. GEORGE, WM THIRTLE TELEPHONE:- VICTORIA 0671, 5… | ||
| scan0270 | The ordering, credit, and supply of Bentley pistons in RR.53 alloy. | ||
| View original record | 4236 To Roy: Hs/Rm.16/KW.15.10.34. Referring to G/Cam/CA.28/JM.2.10.34. As far back as 27.4.34 we ordered two sets of Bentley pistons in RR.53 alloy, one set of which should have been free of charge… | ||
| scan0271 | Dimensional chart for 'Aerolite' pistons from a Bentley 4 Unit engine. | ||
| View original record | BENTLEY 4 UNIT VT36 'AEROLITE' PISTON DIMENSIONS IDENTIFICATION MARK B2 DIMENSIONS TAKEN AT POSITIONS SHEWN TABLE: Headers: RING LAND | SKIRT | RING LAND | SKIRT Nº | A | B | C | D | E | F | G | H | I… | ||
| scan0272 | Measurement log for 'Aerolite' pistons, detailing dimensions at various points on the ring lands and skirt. | ||
| View original record | Y.4.BB. UNIT IDENTIFICATION MARK: 33 'AEROLITE' PISTONS, MEASUREMENTS DIMENSIONS TAKEN AT POSITIONS SHEWN Nº | RING LANDS | SKIRT | RING LANDS | SKIRT | A | B | C | D | E | F | G | H | I | J | K 1 |… | ||
| scan0273 | Letter from The Light Production Co. Ltd. discussing the invoicing procedure for six anodised pistons supplied for research purposes. | ||
| View original record | TELEPHONE: VICTORIA 0671 (6 LINES). CODES: A.B.C. 5TH EDITION. ALL COMMUNICATIONS TO BE ADDRESSED TO THE COMPANY. ON ADMIRALTY, WAR OFFICE AND AIR MINISTRY LISTS. THE LIGHT PRODUCTION CO. LTD.… | ||
| scan0274 | Page 2 of a letter from The Light Production Co. Ltd. requesting a response. | ||
| View original record | _ 2 _ Messrs. Rolls Royce Ltd. Kindly let us have a further word from you on the subject at your convenience. Yours faithfully, pp THE LIGHT PRODUCTION CO. LTD. [Signature: H.N.B Brooks] GENERAL… | ||
| scan0275 | Requesting the fitting of anodically treated pistons to a scrap engine unit for testing. | ||
| View original record | 4236 To RHC. Hs/Rm.9/KW. 23.10.34. Anodic Treatment of R.R. Pistons. The Laboratory have now anodically treated two R.R. pistons for us. Will you please fit these to the scrap engine unit which we… | ||
| scan0276 | Letter to The Light Production Co. Ltd. clarifying the procedure for invoicing experimental parts supplied for research. | ||
| View original record | X236 Exptl. Dept. Hs/Rm.5/KW. 24th October, 1934. The Light Production Co.Ltd., 60/66, Rochester Row, Westminster, LONDON, S.W.1. For the attention of Mr. Brookes. Dear Sirs, We thank you for your… | ||
| scan0277 | Standardisation of parts for Aerolite Pistons. | ||
| View original record | RR 755BN (SH) (57312. 29-12-33) BM. 3/640/2 COMPLETED 25.10.34. BENTLEY STANDARDISATION of PARTS. Date 9.8.34. Handwritten Date: 13-10-34 X No. 236. Drawing Hs/Rm 7/ No. KW.16.6.34. Part with chart… | ||
| scan0278 | Proposal for introducing a bought-out unit for the 'D' series chassis without incurring tool costs. | ||
| View original record | STANDARDISATION of PARTS Handwritten notes: C.W. mark S/P H.S. Typed text: No tool cost involved as this is a bought out unit (Sft/Ws.25.9.34) Could be brought on to production at 1st chassis in "D"… | ||
| scan0279 | Letter from The Light Production Co. Ltd. regarding a credit for six Anodised Pistons supplied for experimental purposes. | ||
| View original record | 4236 TELEPHONE: VICTORIA 0671 (6 LINES). CODES: A.B.C. 5TH EDITION. ALL COMMUNICATIONS TO BE ADDRESSED TO THE COMPANY. ON ADMIRALTY, WAR OFFICE AND AIR MINISTRY LISTS. THE LIGHT PRODUCTION CO. LTD.… | ||
| scan0280 | Urgent request to order 12 Gas rings for Aerolite Pistons from the Light Production Co. | ||
| View original record | x236 O.O. From Hs/Mths. Hs/Mths.15/MA.31.10.34. Will you please order from the Light Production Co., 12 Gas rings suitable for the Aerolite Pistons they have supplied us with. These rings are urgently… | ||
| scan0281 | Letter to The Light Production Co. Ltd. regarding the return of faulty pistons and requesting replacements. | ||
| View original record | 4236 Exptl. Dept. Hs/Rm.12/KW. 1st November, 1934. The Light Production Co.Ltd., 60/66, Rochester Row, Westminster, London, S.W.1. For the attention of Mr. Brookes. Dear Sirs, We are returning to you… | ||
| scan0282 | Anodic oxidation of RR.53 pistons. | ||
| View original record | To H1. (Lab.) x236 Hs/Rm.15/KW.1.11.34. Anodic Oxidation of RR.53 Pistons. Referring to H1.1/AG.22.10.34, we are now running these pistons for which you will have our results in due course. Hs/Rm. | ||
| scan0283 | Laboratory report on low-voltage anodic oxidation experiments conducted on R.R.53 pistons. | ||
| View original record | To Hs/Rm. HL1/AG.22.10.34. Laboratory. Re: Anodic Oxidation of R.R.53 Pistons. We have carried out low voltage experiments in connection with the above and have now treated two used Pistons supplied… | ||
| scan0284 | Letter to The Light Production Co. Ltd. requesting two spare pistons due to unsatisfactory bedding on a supplied set. | ||
| View original record | K236 Exptl. Dept. 2nd November,1934. Hs/Rm.2/KW. The Light Production Co.,Ltd., 60/66, Rochester Row, Westminster, LONDON, S.W.1. For the attention of Mr. Brookes. Dear Sirs, We have now run the set… | ||
| scan0285 | Letter from The Light Production Co. Ltd. concerning piston weight discrepancies and machining. | ||
| View original record | TELEPHONE: VICTORIA 0671 (6 LINES). ALL COMMUNICATIONS TO BE ADDRESSED TO THE COMPANY. CODES: A.B.C. 5TH EDITION. ON ADMIRALTY, WAR OFFICE AND AIR MINISTRY LISTS. THE LIGHT PRODUCTION CO. LTD.… | ||
| scan0286 | Letter from The Light Production Co. Ltd. discussing production specifications and weight tolerances for an order of pistons. | ||
| View original record | - 2 - Messrs. Rolls Royce Ltd. to these particular pistons in the opening paragraph of your letter of the 1st. If so, they should be to hand very shortly. We are anxious to determine this matter… | ||
| scan0287 | Letter from The Light Production Co. Ltd. regarding the supply and bedding of pistons machined to drawing E.84546. | ||
| View original record | TELEPHONE: VICTORIA 0671 (5 LINES). CODES: A.B.C. 5TH EDITION. ALL COMMUNICATIONS TO BE ADDRESSED TO THE COMPANY. ON ADMIRALTY, WAR OFFICE AND AIR MINISTRY LISTS. THE LIGHT PRODUCTION CO. LTD.… | ||
| scan0288 | Letter to The Light Production Co. Ltd. regarding the despatch of two replacement pistons. | ||
| View original record | X236 Exptl. Dept. Hs/Rm.2/KW. 7th November, 1934. The Light Production Co.Ltd., 60/66, Rochester Row, Westminster LONDON, S.W.1. For the attention of Mr. Brookes. Dear Sirs, Replying to your letter of… | ||
| scan0289 | Letter concerning overweight pistons, specifying a weight limit, and requesting a first production set for an experimental engine test. | ||
| View original record | x236 Exptl. Dept. Hs/Rn.1/KW. 7th November, 1934. The Light Production Co.Ltd., 60/66, Rochester Row, Westminster LONDON, S.W.1. For the attention of Mr. Brookes. Dear Sirs, Replying to your letter of… | ||
| scan0290 | Return of six Aerolite Pistons to the Light Production Co. for investigation and replacement. | ||
| View original record | To D/BP. from RHC/EM. x236 c. Hs/Rm. RHC/EM.1/BC.7.11.34. We are sending into the Despatch Stores:- 6 Aerolite Pistons complete with Rings and Gudgeon Pins. Will you please despatch to the Light… | ||
| scan0291 | Two Spectre Pistons sent to The Light Production Co. Ltd. for examination. | ||
| View original record | x236 To D/BP. c. to G/Mt. c. to Roy. Hs/Rm.2/KW.8.11.34. We are sending into the Stores for despatch to Mr. Brookes, c/o. The Light Production Co.Ltd., Slough, 2 Spectre Pistons. These are being sent… | ||
| scan0292 | Use of semi-split and solid skirt pistons for the Spectre engine. | ||
| View original record | 4236 To E. from Hs/Rm. c. to Wor. c. to By. Hs/Rm.3/KW. 8.11.34. Spectre Pistons. Some little time ago you asked us not to proceed with the semi-split pistons. We agree that for the 20/25 and Bentley… | ||
| scan0293 | Letter to The Light Production Co. Ltd. regarding the weight of Aerolite pistons in different alloys. | ||
| View original record | 4236 Exptl. Dept. Hs/Rn.15/KW. 9th November, 1934. The Light Production Co.Ltd., 60/66, Rochester Row, Westminster, London, S.W.1. For the attention of Mr. Brookes. Dear Sirs, Referring to the weight… | ||
| scan0294 | Seized anodised pistons in a B-6 unit and a proposal to modify the cylinder block to continue testing. | ||
| View original record | To RHC. x236 Hs/Rm.13/KW.12.11.34. B-6 Unit - Anodised Pistons. We have run 3 anodised pistons in B-6 unit, they have all 3 seized up. This indicates that we have insufficient clearance. We have 3… | ||
| scan0295 | Letter from The Light Production Co. Ltd. regarding the appearance of two run pistons, E.84546. | ||
| View original record | TELEPHONE: VICTORIA 0871 (8 LINES). CODES: A.B.C. 5TH EDITION. ALL COMMUNICATIONS TO BE ADDRESSED TO THE COMPANY. ON ADMIRALTY, WAR OFFICE AND AIR MINISTRY LISTS. THE LIGHT PRODUCTION CO. LTD… | ||
| scan0296 | Letter from The Light Production Co. Ltd. regarding overweight pistons and the creation of a new metal corebox. | ||
| View original record | TELEPHONE: VICTORIA 0871 (8 LINES). CODES: A. B. C. 5TH EDITION. ALL COMMUNICATIONS TO BE ADDRESSED TO THE COMPANY. ON ADMIRALTY, WAR OFFICE AND AIR MINISTRY LISTS. THE LIGHT PRODUCTION CO. LTD.… | ||
| scan0297 | Letter to The Light Production Co. Ltd. concerning cylinder dimensions and experimental pistons. | ||
| View original record | 7236 Exptl. Dept. Hs/Rm.10/KW. 13th November, 1934. C.H.Brooks Esq., The Light Production Co.Ltd., 60/66, Rochester Row, Westminster, London, S.W.1. Dear Mr. Brooks, I enclose herewith the dimensions… | ||
| scan0298 | Data sheet listing the diameters of new Aerolite pistons and cylinder bores. | ||
| View original record | Diameters of Pistons and Cylinders new Aerolite Pistons. -------------------- Piston Diameters. A B C D E F G H I J K B-4. 3.2312 3.2308 3.2308 3.2324 3.2344 3.2318 3.2312 3.2312 3.2471 3.247 3.2473… | ||
| scan0299 | Comparison of piston weights for 'Spectre' and 'Bentley' models. | ||
| View original record | x236 12.11.34. Comparative Weights of Pistons. Spectre. Complete with Rings & Gudgeon Pin. = 20 1/2 ozs. Without Gudgeon Pin = 16 1/2 ozs. Bentley. Complete with Rings & Gudgeon Pin = 23 1/4 ozs.… | ||
| scan0300 | Potential improvements to piston design, referencing American practice and the experience of the Aerolite Piston Co. | ||
| View original record | X236 Rm To Hs. from E. c. Wor. By. RHC. Hs/Wd. E.7/HP.22.11.34. re Pistons. Referring to the attached memo E/PSN.1/MN.22.11.34, we understand it is American practice on air cooled radials to extend… | ||
| scan0301 | Piston design issues, cooling, and ring configurations for two-stroke and four-stroke engines. | ||
| View original record | To H. Copy to Wer. Hs. RHC. BY. Hs/Wd E/PSN.1/WN.22/11/34. PISTONS. During the course of our investigation into the piston problem on the Two-stroke engine a number of points have arisen which are of… | ||
| scan0302 | Telegram requesting a spare piston from Aerolite Piston Co. to be sent by passenger train. | ||
| View original record | X236 24.11.34. BROOKS, AEROLITE PISTON CO., SLOUGH: PLEASE SEND SPARE PISTON TO E84546 SIZE PASSENGER TRAIN. ROBOTHAM, ROYCAR. | ||
| scan0303 | Letter confirming the dispatch of two spare pistons and requesting the return of a cracked piston for examination. | ||
| View original record | x236 TELEPHONE: VICTORIA 0871 (6 LINES). CODES: A.B.C. 5TH EDITION. ALL COMMUNICATIONS TO BE ADDRESSED TO THE COMPANY. ON ADMIRALTY, WAR OFFICE AND AIR MINISTRY LISTS. THE LIGHT PRODUCTION CO. LTD… | ||
| scan0304 | Advice note for the dispatch of two complete Aerolite Pistons with rings and pins. | ||
| View original record | ADVICE NOTE. No. S 22813 THE LIGHT PRODUCTION Co. Ltd. PROPRIETORS OF THE LONDON PISTON RING CO. LTD. TELEPHONE:— VICTORIA 0671. 5 LINES 60/66, ROCHESTER ROW, WESTMINSTER, S.W.1. ENG. TELEGRAMS:… | ||
| scan0305 | Communication to Aerolite Piston Co. regarding the awaited arrival of RR-53 pistons. | ||
| View original record | x236 7.12.34. BROOKS, AEROLITE PISTON CO., SLOUGH. ANXIOUSLY AWAITING ARRIVAL OF RR-53 PISTONS. ROBOTHAM, ROYCAR. | ||
| scan0306 | Letter from The Light Production Co. Ltd. explaining delays in supplying Aerolite Pistons for the Bentley car due to new foundry equipment issues. | ||
| View original record | x236 TELEPHONE: VICTORIA 0671 (5 LINES). ALL COMMUNICATIONS TO BE ADDRESSED TO THE COMPANY. THE LIGHT PRODUCTION CO. LTD PROPRIETORS OF THE LONDON PISTON RING CO. LIMITED. CHAIRMAN & MANAGING… | ||
| scan0307 | Letter from The Light Production Co. Ltd. regarding the dispatch and weight specifications of Bentley Aerolite Pistons. | ||
| View original record | TELEPHONE: VICTORIA 0671 (5 LINES). CODES: A. B. C. 5TH EDITION. ALL COMMUNICATIONS TO BE ADDRESSED TO THE COMPANY. ON ADMIRALTY, WAR OFFICE AND AIR MINISTRY LISTS. THE LIGHT PRODUCTION CO. LTD… | ||
| scan0308 | Unsatisfactory thinness of anodic coating on pistons after testing. | ||
| View original record | x236 To Hl. c. to Wor. c. to By. Hs/Rm/4/KW.14.12.34. Anodic Treatment of R.R. Pistons. We have run the pistons which you supplied to us having anodic treatment. Whilst they give indications of being… | ||
| scan0309 | Standardisation and testing of Aerolite Pistons for a B-6 engine. | ||
| View original record | To RHC. X236 Hs/Rm.6/KW.14.12.34. Aerolite Pistons for Standardisation. The Aerolite Piston Co. are just about to send bulk supplies to the Works. Since we ran our tests in France they have made one… | ||
| scan0310 | Letter to The Light Production Co. Ltd. regarding the testing and agreed maximum weight of pistons. | ||
| View original record | x236 Exptl. Dept. Hs/Rn.8/KW. 18th December, 1934. C.H. Brooks Esq., The Light Production Co.Ltd., 60/66, Rochester Row, Westminster, London, S.W.1. Dear Mr. Brooks, Thank you for your letter of the… | ||
| scan0311 | On the weight of the first test set of Aerolite pistons for the R.R.53. | ||
| View original record | To By. X236 Hs/Rm.9/KW.18.12.34. Aerolite Pistons in R.R.53. We have now got the first set of Aerolite pistons in RR.53 for test. The weight of these has come out at 17 to 17.2 ozs. We have agreed… | ||