Rolls-Royce Archives
| Identifier | Entry | ||
| Scan001 | From Mr. Royce requesting the fitting of the latest type flexible skirt pistons to specific chassis. | ||
| View original record | X. 7040 To Hs. from E. c. to CJ. BY. E4/M30.12.25. EAC.7. & 8. PISTONS. X. 7040. Please note, Mr. Royce would like EAC.7. and 8 chassis to be fitted with the latest type flexible skirt pistons, in… | ||
| Scan002 | Flexibility test performed on pedestal pistons compared to standard pistons. | ||
| View original record | X7040 To R. from Hs/ACL. c.c. to BJ. Wor. c.c. to RG. E. c.c. to DA. BY. Hs/ACL2/LG12.10.26. PEDESTAL PISTONS. (X8040) We have several sets of pedestal pistons in use on test engines and cars and have… | ||
| Scan003 | Piston flexibility tests, including a diagram of the test rig and a table of results. | ||
| View original record | contd :- -2- CLOCK GAUGES PISTON 'V' PIECE 30 lbs WT. 2.50 PISTON. | LOAD, LBS. | DEFLN: OF POINT 'A'. | FLEXIBILITY REL: TO STD: PISTONS. Present standard. | 30 | .007" | 1 Pedestal pistons. | 30 |… | ||
| Scan004 | Test report on a Phantom engine investigating the relationship between piston friction and overrun vibrations. | ||
| View original record | X7040 Hs/Rm2/LG10.10.27. X8090 We have carried out a test on the Phantom in which the piston clearance was arranged to be .008" cold and holes were drilled in the skirt to reduce viscous oil friction.… | ||
| Scan005 | Drawings for 'Y' metal pistons for EAC.10 and 14. | ||
| View original record | +7040 BY. from E. c. to BJ. Hs. EAC.10 & 14 - 'Y' METAL PISTONS. E1/M28.11.27. X.4004 X.8040 X.7040 We send you herewith drgs. LeCs.2490 and 2492 dealing with 'Y' metal pistons for EAC.10 and 14. E. | ||
| Scan006 | Use of EAC.10 & 14 die-cast pistons for production and sporting Phantom models. | ||
| View original record | BY from E. c. to BJ. Hs. Y7040 E1/M29.11.27. EAC.10 & 14 DIE CAST TYPE PISTONS. X.7040 X.8040 X.4004 Herewith we send LeC.2494 shewing the above. This piston is intended for the production chassis… | ||
| Scan007 | Piston pin lubrication methods and suggesting experimental modifications. | ||
| View original record | To BY. from E. c. to BJ. Hs. +7040 E1/M9.12.27. LeC.2494 - PISTON. X.3040 X.7040 In reply to your memo. BY8/G7.12.27. the method of lubrication of the piston pin is that oil is supplied by the… | ||
| Scan008 | From E. to B.J. Hs. regarding Mr. Royce's requested modifications to a cross web piston design. | ||
| View original record | x7040 BY. from E. c. to BJ. Hs. EL/M13.12.27. EAC.10 & 14 CROSS WEB PISTON. X.8040 X.7040 Referring to drg. LeC.2494, Mr. Royce fears to start off with the webs as heavy as shewn, as he says it will… | ||
| Scan009 | Trialling sand cast pistons made from Hall's Special Alloy for the 12-EX and a bench test engine. | ||
| View original record | RHC. H.I. Hs. C. Wor. X7040 BY17/G.26.1.28. PISTONS IN HALL'S SPECIAL ALLOY. -------------------------------- We are anxious to try out the above alloy as sand cast pistons for 12-EX. The type of… | ||
| Scan010 | Comparing cross web and diagonal web piston designs, concluding the diagonal web piston is the superior design for car work. | ||
| View original record | R. from E. c. to BJ. Hs. BY. X7040 E1/M18.2.28. PISTONS. X.8040 X.7040 It is understood that we are testing pistons of both cross web and our old diagonal web pattern. The cross web are however found… | ||
| Scan011 | Recommending a material change for piston pins from casehardened steel to high duty alloy steel. | ||
| View original record | E. Hs. BY. OY. RG. from R. +7040 R2/M15.3.28. c. to BJ. Wor. EP. Fl. AERO ENGINES, 20 HP, & 50 HP. CHASSIS X. 8040 X. 3996 PISTON PINS. X. 7040 X. 685 X. 5040 It should be realised that we already… | ||
| Scan012 | The material properties and fatigue testing of piston pins for aero and car engines. | ||
| View original record | E. RG. from R. Hs. BY. HL. c. to BJ. Wor. Fl. X7040 R7/M7.4.28. X.5040 X.8040 X.7040 X.3996 ALL ENGINES - AERO & CAR - PISTON PINS. I understand that we are making no case-hardened pins but that they… | ||
| Scan013 | Two types of pistons for a 10,000-mile Phantom engine test. | ||
| View original record | Hs. from R. BY. c. to BJ. Wor. E. 7040 R3/M1.5.28. PISTONS FOR NEXT 10,000 MILES PHANTOM. Please send two pistons, short and long, sand cast in HL's L.250 (?) and standard, afterwards die-cast. The… | ||
| Scan014 | Single bolt pedestal pistons with a lower scraper ring for Phantom and EAC.10 models. | ||
| View original record | BY. from E. c. to BJ. Hs. X7040 E1/M2. 5. 28. PHANTOM AND EAC.10. SINGLE BOLT PEDESTAL PISTONS WITH X. 8040 LOWER SCRAPER RING. X. 7040 Please find attached drg. LeC.2554 shewing the above. E. | ||
| Scan015 | Design and development of new experimental 20 HP pistons, including a novel design with an invar ring. | ||
| View original record | Hs. By. from R. c. to BJ. Wor. +7040 R3/M20.7.28. 20 HP. PISTONS. X.5040 X.7040 X.741 We have already sent you an ordinary type piston strengthened, and we have also sent you a group of designs for… | ||
| Scan016 | Modifications to Phantom piston rings to increase cylinder wall pressure. | ||
| View original record | Hs. from R. c. to BJ. Hs. X.7040 R2/M23.7.28. PHANTOM PISTON RINGS. X.741 We want to get more pressure on the cyl. walls by deeper rings, with wider gap. Get some to give an increase of 50% by being… | ||
| Scan017 | From Royce to Hives regarding piston ring solutions for Twenty HP and Phantom models. | ||
| View original record | Hives, Roycar, Derby. WW. 23.7.28. X. 741 X. 7040 X 5040. VERY N ANXIOUS ABOUT PISTON RINGS. UNDERSTAND PLAIN RING WILL BE USED AT ONCE ON TWENTY HP. PRODUCTION BUT PHANTOM STILL DEPENDING ON OUR L.… | ||
| Scan018 | Telegram suggesting engine modifications, including specific types of rings and altered oil grooves in bearings. | ||
| View original record | POST OFFICE TELEGRAPHS. Office Stamp: DERBY 23 JUL 26 Time handed in: 12 12 Office of Origin: Chichester To: Roycar Lec 2554 with bottom scraper might be a solution stop if required to be more… | ||
| Scan019 | Telegram concerning piston rings for the 20 horsepower and Phantom models. | ||
| View original record | Hives Roycar Derby. Very anxious about piston rings stop understand plain rings will be used at once on 20 horsepower production but phantom still depend on our L. shape stop suggest piston | ||
| Scan020 | Post Office Telegraph form with a handwritten message from Royce. | ||
| View original record | POST OFFICE TELEGRAPHS. Telegrams for INLAND addresses may be handed to the messenger who delivers this form. The Post Office accepts telegrams by telephone. No. 0194 Office Stamp: DERBY 23 JUL 28… | ||
| Scan021 | Fitting and testing pistons and rings for the 20 HP and Phantom engines. | ||
| View original record | To R. from Hs. c. to BJ. Wor. c. to E. DA. c. to BY. X7040 Hs2/LG25.7.28. PISTONS AND RINGS. X.7040 X.5040 X.741 20 HP. 12-G-4 engine is being fitted with pistons to Lec.2577 and we anticipate this… | ||
| Scan022 | Requesting a set of 'Perfect Circle' piston rings for a Phantom engine, with a preference for a 45° joint. | ||
| View original record | 47040 To H.H.C. from Hs/Rn7 Hs/Rn7/LG31.8.28. PISTON RINGS. We want to try a set ( 1 ring/piston) of Perfect Circle rings on the Phantom modified according to present practice on F. engines. Will you… | ||
| Scan023 | Running experience and performance issues of single bolt pedestal pistons, specifically concerning piston knock and gas leakage. | ||
| View original record | To R. from Hs/ACL. c. to BJ. WoR. c. to E. DA. c. to BY. +7040. Hs/ACL1/LG12.10.28. SS. SINGLE BOLT PEDESTAL PISTONS. Lec.2554. +7040 E.77518. We have had considerable running experience on the test… | ||
| Scan024 | Engine lubrication, seizure risks after cold starts, and piston design improvements. | ||
| View original record | contd :- -2- would drain away from the cylinder walls and it is conceivable that an appreciable time would elapse after starting from cold before the cyl. bores would receive adequate lubrication by… | ||
| Scan025 | The optimal number of piston rings to prevent blow past and a proposal for a new piston design test. | ||
| View original record | contd :- -3- With regard to the number of piston rings we consider we should benefit by employing more than three. The Test Dept. have experienced a marked improvement on the 20 HP. chassis since… | ||
| Scan026 | Design and specifications for pistons and their rings. | ||
| View original record | Hs. from R. c. to BJ. Wor. By. X7040 R5/M16.10.28. RE. PISTONS. X. 8040 X.5040 X. 7040 X. 741 We conclude that you do not want a lower scraper ring. We agree we only put it on to reduce the… | ||
| Scan027 | Specification document detailing the features and dimensions of pistons for the Phantom and 20 HP chassis. | ||
| View original record | contd :- -2- of the pistons we wish to get adopted :- We want 3 narrow rings and a perfect circle ting all pinned as shewn on Lec.2430 for both chassis. B. for the 20 HP. We understand you are… | ||
| Scan028 | Testing of two different piston types for the 'SS' engine. | ||
| View original record | To Bv, from Hs. c. to Wor. 47040 Hs12/LGl2.11.28. PISTONS FOR 'SS' ENGINE. We wish to test two types of piston on the SS. engine viz : the single bolt pedestals with three rings and a perfect circle… | ||
| Scan029 | Modifications for the G.4 engine crankcase and 4-point mounting. | ||
| View original record | X7040 SECRET R. from E. c. to Sg. Wor. HS. EV. G.4. ENGINE - CRANKCASE FOR 4 POINT MOUNTING ETC. E4/M23.4.29. X5000 Y5005 Referring to the 4 point mounting on the G.4. crank-chamber we had come to the… | ||
| Scan030 | Piston knocks in F.2-B series engines, attributing the cause to temporary piston seizure from lack of lubrication on cold starts. | ||
| View original record | R. Hs. BP. EY. Lbc. X7040 Hm/10/MW30.4.29. CYLINDERS & PISTONS F.2-B SERIES & ONWARDS. We are receiving a serious No.of comparatively new cars with complaints of piston knocks which our examination… | ||
| Scan031 | The design objectives and features of SS. Invar Strut Pistons. | ||
| View original record | X7040 SECRET. BY. FROM E. EB/M27.6.29. c. to Sg. HS. SS. INVAR STRUT PISTONS. We send you herewith LeC. 2729. and 2730. shewing the above. The objects of this design are to overcome piston knocks at… | ||
| Scan032 | Modification to S.S. pistons, lengthening the skirt by .375 inches to resolve issues with piston slap. | ||
| View original record | BY/SS. C. Sft. C. Mr. Gallimore. C. Mr. Edwards (Foundry) C. Hs. S.S. PISTONS The SS. which is at present on production is meeting trouble from piston slaps. In order to overcome this we are… | ||
| Scan033 | Car with defective pistons sent for repair and feedback on the performance of a 20 HP engine. | ||
| View original record | SG. FROM R. Copy to Hs. x7040 SECRET. 18-EX. R.5/M16.7.29. X. 7040 X. 7770 With reference to the above car which I promised to send to London on Monday last, I decided after all to send it to Derby as… | ||
| Scan034 | Inquiring about the production status of various car pistons. | ||
| View original record | To RHC. from Hs/Tsn. X7040 Hs/Tsn. 2/MJ.17.9.29. X7040 X5040 CAR PISTONS. ------------ We should like to know the position of the following piston, i.e., whether made and tested, made, or making. S.S.… | ||
| Scan035 | Report outlining the designs and features of various car pistons. | ||
| View original record | X7040 Hs. from Hs/Tsn. Hs/Tsn2/AD4.10.29. POSITION OF CAR PISTONS DESIGNS WE HAVE RECEIVED ARE :- S.S. Lec. 2737 - E.79500. Features :- (1) 4.125" long (Long skirt) Lec. showed 4.000" skirt; actually… | ||
| Scan036 | Specifications and features for various piston designs, detailing alterations, ring arrangements, and gudgeon pin fixings. | ||
| View original record | -2- 20 H.P. 3.000" BORE. Features: Lec.2577. Features: (1) Alteration to webs in head : one nearer split side made thick; other one thin. (2) 4 rings all stopped, instead of 5 rings 3 stopped. (3)… | ||
| Scan037 | The test results of Invar pistons on a Phantom 11 engine. | ||
| View original record | To R. c. to Sg. c. to Wor. c. to E. c. to Da. c. to By. x7040 Hs/ACL/H13.11.29. X.7000 X.1506 X.7040 Re: INVAR PISTONS - PHANTOM 11. We have run a set of Invar pistons Lec2729/30 for 10 hours on a… | ||
| Scan038 | Order for a set of Phantom pistons with two spares, specifying magnesium instead of aluminium. | ||
| View original record | X7040. BY/CS. c. BY/DD. c. Hs. BY22/G.3.12.29. PISTONS. Will you kindly order up a set of Phantom pistons with two spares to LeC.2729 except that the aluminium would be replaced by magnesium. BY.… | ||
| Scan039 | Test bed running and clearances for Invar pistons in a Phantom II engine. | ||
| View original record | To. R.P. From HS/ACL. c. to SS. c. to H. Ds. c. to By. X7040 Hs/ACL.1/MJ.27.12.29. INVAR PISTONS - PHANTOM II. We have done altogether about twelve hours test bed running with various sets of Invar… | ||
| Scan040 | Clearances and hot testing procedures for pads on a test bed. | ||
| View original record | -2- the centre of the pads and .0035 across the sides of the pads. These will be tested for knocks and freedom when hot, on the test bed. HS/ACL. | ||
| Scan041 | Blueprint showing a cross-section of a piston with an Invar strut, indicating where it tightens in the bore. | ||
| View original record | PISTON TIGHTENS IN BORE WHERE MARKED THUS. INVAR STRUT ROLLS-ROYCE LIMITED FILING ROOM 24 DEC 1929 DERBY 24/12/29 | ||
| Scan042 | Test bed results for Phantom II Invar pistons, detailing issues with clearances and cold knocks. | ||
| View original record | To R. From Hs/ACL. C. to H.E. WRT. C. to M.R. DM. C. to BP. X7040 PHANTOM II INVAR PISTONS. We have continued our tests on the test bed with Invar pistons. It will be remembered from a previous report… | ||
| Scan043 | Piston design, comparing issues with standard aluminium and cast iron pistons, and the need for flexibility. | ||
| View original record | -2- results we require flexibility in the pistons because whatever troubles we have had with our present Std. Alua. pistons we had far more with the cast iron pistons on the silver ghost. We appear to… | ||
| Scan044 | Modifying Phantom II Invar pistons to introduce flexibility for a better fit. | ||
| View original record | Hs. from E. C. Sg. Ry. X7040 E1/M23.1.30. PHANTOM II INVAR PISTON. X7040 X1506 We note from your reports that these pistons are likely to give as much trouble as cast iron in respect to precision of… | ||
| Scan045 | The satisfactory testing of pistons made from R.R.53 material for Phantom II and 20/25 HP models, requesting a new standardisation sheet. | ||
| View original record | SH 192 GN RECEIVED HS. X7040 BY2/J.2.9.30. x7040 Phantom II and 20/25 H.P.Pistons in R.R.53 Material. We have now had a report from the Test Department that the 20 sets of pistons produced in the… | ||
| Scan046 | Questioning the standardisation of pistons made in RR.50 alloy without a 10,000-mile test. | ||
| View original record | H S Y7040. To Hs. from Sg. re Pistons made in RR.50 Alloy. Sg32/E29.9.30 X)040 x5040 Copy to Wor. I have just seen Standardisation Sheet X.No.7040/5040 dated the 4.9.30 in respect of the adoption of… | ||
| Scan047 | The decision to production test pistons made from R.R.50 alloy. | ||
| View original record | To Sg. From Hs. c. to WCr. c. to By. X7040. Hs.3/MJ.3.10.30. X. 7040. X. 5040. Re. Pistons in R.R.50 Alloy. Replying to Sg32/E29.9.30. The position is that although a number of other manufacturers are… | ||
| Scan048 | Standardisation of chassis parts, proposing a change of piston material from alloy No. 221 to RR. 53. | ||
| View original record | RR 785 (10M) (3-7-30) BM. 6/2571. X7040. COMPLETED 7.10.30. STANDARDISATION of CHASSIS PARTS. Description of Parts. PISTONS MADE IN RR.53 ALLOY Origin. To improve material. Experimental Test Report.… | ||
| Scan049 | Proposing an increase in the dimensions of Phantom II pistons to combat 'cold knocks' and extend piston life. | ||
| View original record | X7040. By C Hs from Mx. PHANTOM II PISTONS With the introduction of extra cylinder lubrication, we should like to try increasing the dimensions of the piston on the load diameters with a view to… | ||
| Scan050 | Redesign of the P.2 piston by increasing its length and testing a new design. | ||
| View original record | BY. FROM E. X7040 E5/M10.1.31. C. to HS. MX. P. 2. PISTONS. When in Derby I was present at a discussion with HS. and MX. at which some outline drawings were exhibited shewing an interesting comparison… | ||
| Scan051 | Short memo forwarding a note from Mx and proposing a test for an item with more bearing area. | ||
| View original record | To E. From Hs/Rm. X7040, Hs/Rm.1/MJ.14.1.31. Attached is a copy of a note from Mx. If you would consider giving us more bearing area, how would you like us to test it? Hs/Rm. Att: copy of… | ||
| Scan052 | Quarterly complaints regarding Phantom II pistons, suggesting an increase in piston length. | ||
| View original record | Hs✓ By Wor. RECEIVED 19 JAN 1931 HS E. Attached is a copy of a note from Mr Hx you would consider giving us more bearing area, how would you like us to test it? Mx8/T5.1.31. PHANTOM II PISTON -… | ||
| Scan053 | Longer experimental pistons for the P. 2. model, with illustrations and design suggestions. | ||
| View original record | BY. FROM E. X/90/40 E3/M20.1.31. C. to WOR. HS. MX. re. LONGER EXPERIMENTAL PISTONS FOR P. 2. We are sending you herewith LeC. 2861. shewing the illustrations of various pistons compared, supplied by… | ||
| Scan054 | Testing longer pistons for the Phantom II engine to address piston 'slap'. | ||
| View original record | X7040. E. Hs. ✓ BY. Wor. Mx6/H1.4.31. RECEIVED 17 APR 1931 H PHANTOM II. PISTONS. See memos. Mx8/T5.1.31., E5/M10.1.31. and E3/M.20.1.31. We have run two sets of pistons with skirt length increased by… | ||
| Scan055 | Asking about the severity of piston knocks on the Phantom II and if extra oil would help. | ||
| View original record | To Br. From Hs/GWH. X7 040. Hs/GWH.4/KT.16.4.31. Will you please let us know whether you consider piston knocks are serious on the Phantom II., also whether in your opinion you think that extra oil to… | ||
| Scan056 | Customer complaints and potential solutions for piston knock and brake squeaks on Phantom II cars. | ||
| View original record | HS To W.Or. From Hs/GWH. 87040 Hs/GWH.2/KT.21.4.31. X4117 (1) Piston Knocks. Hs. and Rm. are of the opinion that extra oil to the cylinders is a help, but they are of the opinion that the longer skirt… | ||
| Scan057 | Issues and modifications concerning the clutch, front shock dampers, and high tension wires. | ||
| View original record | -2- Hs/GWH.2/KT.21.4.31.cont. first in Oct. 1930. They have not received any complaint from the Owners. PM. has verbally told Hs. that he does not know of any car so fitted squeaking. A report has… | ||
| Scan058 | Standardisation proposal for a longer skirt piston to safeguard against piston knocks. | ||
| View original record | RR 755 (10H) (8459, 24-10-30) 6/3185. COMPLETED 6.5.31. STANDARDISATION of CHASSIS PARTS. Description of Parts. LONGER SKIRT PISTON. Origin. To safeguard against development of piston knocks.… | ||
| Scan059 | Merits and proposed changes to the practice of pinning piston rings for aero and car engines. | ||
| View original record | X7040 RG. HS. E. } FROM R. C. to SG. WOR. R2/M24.5.32. X. 7040 X. 5040 X. 3996 X. 4465 PISTONS - AERO & CAR ENGINES. For over 25 yrs we have been pinning our piston rings, but we understand from some… | ||
| Scan060 | 19-EX piston failures due to breaking piston stops and rapid ring wear at high speeds. | ||
| View original record | R. from Hs. c. Sg. Wor. c. E. Du. c. Ev. Hdy. X7040. Hs.2/ADS.7.32 19-EX PISTON FAILURE You will see by the daily report on 19-EX that they have had a failure owing to the piston stops breaking. We… | ||
| Scan061 | Experimental piston with stiffer rings for a Phantom II chassis. | ||
| View original record | X)040. To RMC. c. Hs. c. By. E/JNR.1/HP.8.7.32. re Phantom II - Piston. We send you herewith LeC.3139, a piston having stiffer rings. The radial depth of the rings is increased from .127 to .142. Will… | ||
| Scan062 | Potential causes and investigations into piston failure. | ||
| View original record | E. HS. } FROM R. x7040 R3/M14.7.32. C. to SG. WOR. BY. RG. 19-EX. PISTON FAILURE. Referring to HS2/AD8732., we think this should undergo a thorough investigation at once. Very many years ago we had… | ||
| Scan063 | Limitations of chassis engine pistons with spring skirts and proposing design improvements. | ||
| View original record | To Sg. } from E. Wor. } X/040 E.8/HP.11.5.33. X.4553. X.7040. X.5040. X.4027. c. to Hs. By. CHASSIS ENGINE PISTONS. From the results we have obtained with running engines at high speeds on Bensport,… | ||
| Scan064 | Modifications to a Phantom Piston, including a change to Staybrite steel for the stops. | ||
| View original record | L. Swindall - see me Rm To BY. from E/JNR. c. Hs. RMC. X7040 E/JNR.2/HP.21.4.34. Rm Phantom Piston. We send you herewith drawing:- LeC.3878 showing various modifications to overcome the breakage of… | ||
| Scan065 | Standardisation of parts for the 40/50 model, specifically deleting stops for scraper rings on pistons. | ||
| View original record | RR 755 (BH) (57312, 29-12-33) BM 3/540/2 COMPLETED 3.12.34. 40/50 STANDARDISATION of PARTS. Date: 16.10.34 X No. 7040. Drawing LOP. No. E79533 Part List: LEC. 3878. E85463. Description of Parts.… | ||
| Scan066 | Standardisation of parts form detailing costs for extra jigs and tools for the 'U' series chassis. | ||
| View original record | STANDARDISATION of PARTS Est. cost of extra jigs, tools and equipment (Sft/Ws.20.10.34)£5.0.0. Could be brought on to production at 1st chassis in "U" series (Sft/GH.20.10.34) without scrap. [Stamp]… | ||