Rolls-Royce Archives
| Identifier | Entry | ||
| Scan0 | Samples of Necol-Collodions paint and requesting the glossy black version for experiments. | ||
| View original record | TO HS. FROM DA. ORIGINAL DA4/M2.10.24. NECOL-COLLODIONS PAINT. S.2720. X4547 We understood that several samples of this paint were being sent to you by the makers. It is unlikely you will want the… | ||
| Scan1 | Potential causes for a weak bracket and worn bushes on a front brake equaliser. | ||
| View original record | TO HS. FROM DA. SECRET. DA3/M2. 10. 24. E. A. C.111. FRONT BRAKE EQUALISER. [Handwritten]: X9941 X9370 [Handwritten]: X4480 X.9940 In the report of the 10,000 miles, it refers to the inside bracket of… | ||
| Scan2 | Secret memorandum on a valve cover fixing modification to facilitate easier removal. | ||
| View original record | ORIGINAL TO BY. FROM E. SECRET. E2/M3. 10. 24. Copy to - CJ. Copy to - HS. E. A. C. 11. VALVE COVER FIXING. Y 8060 We send you herewith drawing No. LeC. 1930., dealing with a modification to the… | ||
| Scan3 | Lubrication and a suggested alteration for the 20.HP. side steering tube. | ||
| View original record | ORIGINAL TO HS. FROM DA. DA4/M3.10.24. 20.HP. SIDE STEERING TUBE. K4265 Replying to your HS8/LG18924., we think that the scheme of lubrication on LF469 will be satisfactory, and would point out that… | ||
| Scan4 | Criticisms of the springing on a cabriolet, specifically internal friction and overstiffness. | ||
| View original record | TO HS. FROM R. ORIGINAL R3/M6. 10. 24. Copy to C.J. Copy to B.X. Copy to DA. Copy to E. CRITICISMS ON THE SPRINGING OF THE CABRIOLET BROUGHT TO WW. BY HS. ON 3/10/24. X9410 X2628 If there is any… | ||
| Scan5 | Secret memo from 'R' to 'EFC' regarding a modification request for the E.A.C. 11 R-R dynamo. | ||
| View original record | ORIGINAL TO EFC. FROM R. SECRET. R4/M6.10.24. copy to CJ [Struck out] copy to DX [Struck out] copy to HS [Struck out] E. A. C. 11. re. DYNAMO. X8660 In the E.A.C. 11. R-R dynamo, we want the extra… | ||
| Scan6 | Secret memo discussing the slow running performance of the E.A.C. engine and proposing carburetter control modifications. | ||
| View original record | ORIGINAL TO HS. FROM R. SECRET. R7/M6. 10. 24. Copy to C.L. (Struck through) E. A. C. 11. SLOW RUNNING. X8770 X8240 (Handwritten) X8771 X8080 (Handwritten) I was interested to learn that the slow… | ||
| Scan7 | Modifications and specifications for thin leaf type front springs. | ||
| View original record | TO BY. FROM R. Copy to - OJ. Copy to - HS. Copy to - DA. Copy to - E. re. FRONT SPRINGS. X2628 X9410 THIN LEAF TYPE. With regard to the sample front spring (Woodhead) brought here by HS. last Friday,… | ||
| Scan8 | Secret memo detailing the modification and relocation of the ignition coil, including material changes and mounting schemes. | ||
| View original record | ORIGINAL 2. TO E. FROM E. S E C R E T. E1/M7.10.24. Copy to C.J. Copy to EFC. Copy to HS. E. A. C. 11. IGNITION COIL. X9710 As previously mentioned we have moved the position of the ignition coil,… | ||
| Scan9 | Investigating the source of exhaust noise on a 40/50 model before making design changes. | ||
| View original record | TO HS. FROM R. Copy to BJ. Copy to BY. Copy to EP. re. EXHAUST NOISE ON 40/50. K. 3436 With regard to BJ1/H11024., before doing anything further to the design as it now stands, such as lagging the… | ||
| Scan10 | Request for a blueprint and a report on the performance of a Goshawk disc crankshaft. | ||
| View original record | TO BY.) FROM E. HS.) "Copy" to GS. E2/M8.10.24. re. GOSHAWK DISC CRANKSHAFT. X4221 Would you kindly send us a blue print giving the dimensions of the disc crankshaft that was tried on the Goshawk? Mr.… | ||
| Scan11 | Buffer clearance in relation to stiffer springs and their effect on camber and stress. | ||
| View original record | ORIGINAL TO HS. FROM DA. S E C R E T. DA3/M8.10.24. E. A. C. 11. BUFFER CLEARANCE. X8410 Replying to your HS7/LG61024., the stiffer springs fitted in accordance with Mr. Royce's idea would… | ||
| Scan12 | Bump tests on road springs, cam mounting, and a proposed continuous bending test apparatus. | ||
| View original record | TO HS. FROM DA. BUMP TEST ON ROAD SPRINGS. X1331 X9410 X2628 Referring to HS8/LG61024., we infer that the springs tested were not the very latest thin leaf 12 1/2% springs? Presumably you will not as… | ||
| Scan13 | Materials for 40/50 chassis magneto gears, addressing issues of noise and wear. | ||
| View original record | TO BY FROM R. Copy to - HS. ORIGINAL X.4181/cre. 40/50 CHASSIS MAGNETOS. X.4648. In reply to your memos. concerning the above, we have been using magnetos now for a very long time, and I do not see… | ||
| Scan14 | Technical memo comparing leverage fluctuations in different four-wheel brake cam designs. | ||
| View original record | TO HS. FROM DA. DA2/110.10.24. FOUR WHEEL BRAKES. X9940 X4214 X1559 Replying to your HS3/LG71024., the statement referred to is sufficiently true when compared with square cams and similar devices.… | ||
| Scan15 | Secret internal memo confirming arrangements for the first three bodies of a new sports model. | ||
| View original record | [Stamped: ORIGINAL] TO HS. FROM DA/EV. SECRET. DA/EV1/M13.10.24. Copy to [redacted] OJ. Copy to [redacted] R. E. A. C. 11. SPORTS MODEL. [Handwritten:] X8830 X8250 X8260 This is to confirm our… | ||
| Scan16 | Adjustments and considerations for a 4-wheel brake system, focusing on the equalising lever. | ||
| View original record | TO HS. FROM R. Copy to BG. ORIGINAL 4 WHEEL BRAKES. X9940 (X9910 crossed out) Your memo. re. the above to hand. (1) Though we instructed friction in the top joint of the suspension link, we consider… | ||
| Scan17 | Testing of front springs from different manufacturers, Firths and Woodheads. | ||
| View original record | ORIGINAL TO HS. FROM R. Copy to CG Copy to EH Copy to BT re. FRONT SPRINGS. X2628 X9410 X1331 My idea of testing the exact strength and design of spring that we were going to use without insisting… | ||
| Scan18 | The breakage of front road springs and a proposal to improve their lifespan by varying the overhang. | ||
| View original record | HS.) FROM DA. ORIGINAL DA1/M21.10.24. X2628 X9410 re. FRONT ROAD SPRINGS - 12 1/2% THIN LEAF. Referring to the reports of the breakage of the bottom leaf of these springs, and to the note on the… | ||
| Scan19 | Recommendation to test if the leather washers on the water pump fixing can be deleted without loss of grease. | ||
| View original record | ORIGINAL TO HS. FROM R. S E C R E T. R5/M23.10.24. Copy to G. [Struck through] Copy to H.S. [Struck through] Copy to E.W. [Struck through] E. A. C. 11. (re. VISIT OF HS. TO WW. ON WEDNESDAY,… | ||
| Scan20 | Noise issues and potential modifications to an exhaust system. | ||
| View original record | ORIGINAL TO HS. FROM R. S E C R E T. Copy to [redacted] E. A. C. 3 & 2. EXHAUST. Handwritten: X8230, X9230 (crossed out), X8490 (crossed out) This is the type that is hardly satisfactory in the… | ||
| Scan21 | Secret memorandum discussing the design, illumination, and materials for an instrument board. | ||
| View original record | ORIGINAL TO HS. FROM R. S E C R E T. R3/M23.10.24. Copy to G.L " " A.D " " A.G.E E. A. C. 11. INSTRUMENT BOARD. 48530 (re. VISIT OF HS. TO WW. ON WEDNESDAY, 22/10/24.) The grouping of the instruments… | ||
| Scan22 | The correct positioning of the front number plate. | ||
| View original record | ORIGINAL TO HS. FROM R. S E C R E T. R6/M23.10.24. Copy to CJ Copy to DA Copy to EJE Copy to EW Copy to AH E. A. C. 11. (re. VISIT OF HS. TO WW. ON WEDNESDAY, 22/10/24.) FRONT NUMBER PLATE. XP250… | ||
| Scan23 | Secret memo discussing modifications to four-wheel brakes, specifically concerning balancer arm suspension links. | ||
| View original record | TO HS. FROM DA. SECRET. DA3/M24.10.24. Copy to CJ. E. A. C.111. FOUR WHEEL BRAKES. X9940 Referring to the question of the friction in the top of the balancer arm suspension links, we send herewith… | ||
| Scan24 | Experimental modifications to the Goshawk II foot brake leverage. | ||
| View original record | TO EY. FROM DA. ORIGINAL DAL/M25.10.24. Copy to HS. GOSHAWK 11. FOOT BRAKE. X4258 X4259 Mr. Royce wishes to experiment with increasing the leverage on the above brake 50%. This would make it about 50… | ||
| Scan25 | Secret memo regarding a proposed modification to axle control parts. | ||
| View original record | ORIGINAL TO HS. FROM DA. S E C R E T. DA2/M27.10.24. E. A. C. 11. AXLE CONTROL. HS420 Replying to your HS4/LG241024., we sent the proposed modification to the axle con- trol parts to Mr. Bailey on… | ||
| Scan26 | Approving modifications to the engine undershield and cross steering tube, including a sketch of the proposed changes. | ||
| View original record | TO BY. FROM E. SECRET. EL/M3.11.24. Copy to - CS. Copy to - HS. Copy to - DA. E. A. C. 11. ENGINE UNDERSHIELD. 78290 In reply to your memo. BY/C6/H291024., please note Mr. Royce is agreeable to… | ||
| Scan27 | Secret memorandum detailing modifications to the throttle control gear, referencing drawing No. Lec. 1946. | ||
| View original record | TO H.S. FROM E. Copy to - HS. SECRET. E1/M11.11.24. E. A. C. 11. CONTROL GEAR. X8240 We send herewith drawing No. Lec. 1946., shewing the modifications to the throttle control to make opening due to… | ||
| Scan28 | Confidential memo discussing the design and production viability of the 'V' series chassis compared to other options for an EAC model. | ||
| View original record | [Struck through text] FROM R. SECRET. E. A. C. [Handwritten and underlined: X8770] Copy to [Struck through text] [Handwritten: H.S.] It is still somewhat doubtful as to what 'V' series ought to be.… | ||
| Scan29 | Page discussing the 'W' Series Chassis and EAC 2 specifications. | ||
| View original record | (2) (C). 'W' SERIES CHASSIS. (1) EAC. 2. exactly - i.e. the 100 EAC. 2s. already in hand, or exactly as improved 'V' series, with sequence starter. R. | ||
| Scan30 | Specifications for the E.A.C. chassis, detailing a 'Conversion Chassis' and an 'Improved V Chassis'. | ||
| View original record | ORIGINAL Memo FROM R. S E C R E T. R1/M17. 11. 24. Copy to [illegible] Copy to [illegible] Copy to - HS. SPECIFICATIONS FOR E. A. C. CHASSIS. ================= X8770 X9770 [Handwritten, struck… | ||
| Scan31 | Repairs for a Beaton all-weather car and the preparation of a new cabriolet for Mr. Royce. | ||
| View original record | ORIGINAL FROM DA/EV. DA/EV1/M18.11.24. Copy to - HS. re. CAR FOR Mr. ROYCE. K4219 K3730 We thank you for your C17/LH141124. We understand that HS. is sending for the Beaton all-weather car - 5.G.11. -… | ||
| Scan32 | Completion of sub-frame designs and arrangements with coachbuilders Barkers and Hoopers. | ||
| View original record | TO C. FROM DA/EV. Copy to - HS. DA/EV3/M18.11.24. X8-830 X8380 X9380 re. BODIES ON SUB-FRAMES. Confirming our telephone conversation yesterday afternoon we are now completing the designs of the… | ||
| Scan33 | Experiments on the GF-68 underframe to determine the cause of vibration and shuddering. | ||
| View original record | ORIGINAL TO HS. FROM DA/EV. DA/EV5/118.11.24. X4260 Further to our note of yesterday re. GF-68 underframe, we have made suggestions for determining whether the forward projecting ends of the… | ||
| Scan34 | From AJS regarding a new cushion drive design to eliminate a thump in the starter. | ||
| View original record | [REDACTED] FROM AJS. SECRET ORIGINAL AJS1/M20.11.24. Copy to - HS. E. A. C. SEQUENCE STARTER. X8650 With a view to eliminating the thump experienced by HS. on the starter drive as originally designed,… | ||
| Scan35 | Specifications and instructions for the production of body sub frames for the 40/50 model. | ||
| View original record | FROM DA/EV. DA/EV1/M22.11.24. C. to C.C. HS. re. 40/50. BODY SUB FRAMES. X3440 X9380 R8380 We understand that the present proposition is to not consider the introduction of the underframe suspension… | ||
| Scan36 | Letter to coachbuilders James Young & Co. Ltd. detailing a list of repairs required for a 'Beaton All Weather' car. | ||
| View original record | COPY TO HS. COPY TO G. "CAMACHA". WEST WITTERING. CHICHESTER. 25th. November 1924. Messrs James Young & Co. Ltd. Coachbuilders 37 London Road. BROMLEY. Dear Sirs, 5.G.11. - BEATON ALL WEATHER. X3730 /… | ||
| Scan37 | Request for a set of Goshawk hand control levers with a more durable 'Necol' finish. | ||
| View original record | TO HS. FROM DA/EV. ORIGINAL DA/EV2/M26.11.24. 45247 We would be glad if you could send us as soon as possible a set of Goshawk hand control levers, finished in 'Necol', egg-shell finish, as we wish to… | ||
| Scan38 | Manufacturing process for a bakelite moulded ignition wiring tube using a split die. | ||
| View original record | ~~TO BY.~~ FROM E. SECRET. E1/M27.11.24. Copy to -- GJ. Copy to - HS. E. A. C 2. IGNITION WIRING. X8860 In reply to your memo. BY/C11/H251124., we called for a bakelite moulding on the original… | ||
| Scan39 | Electricity supply to the Works, proposing an investigation into metering methods for motors with low power factors. | ||
| View original record | ORIGINAL TO EFC. FROM R. Copy to R.I. [Strikethrough] Copy to WORK [Strikethrough] Regarding the supply of electricity to the Works, in discussing alternating currents with Mr. Bentley of Royce Ltd.,… | ||
| Scan41 | Discouraging the use of thick oil in gearboxes and back axles, citing handling difficulties in a cold Goshawk. | ||
| View original record | TO HS.) FROM R. [HS. is struck through and 'ER' is handwritten below it] ORIGINAL R6/M29. 11. 24. X4219 [Handwritten and struck through] V3591 [Handwritten and struck through] I should discourage the… | ||
| Scan42 | Redesigning an exhaust system on an EAC engine to allow for a sequence starter motor. | ||
| View original record | TO E. A. C. FROM R. S E C R E T. R2/M29.11.24. Copy to - HS. SJ x8770 x8305 x8230 Mr. Hives is very keen to get the fabric coupling on the EAC. engine as soon as possible. We have therefore in… | ||
| Scan43 | The replacement of Goshawk starter motor pinions. | ||
| View original record | TO HS. FROM R. Copy to C.L. Copy to H.S. ORIGINAL R1/M3. 12. 24. re. GOSHAWKS. X.3592 X3587 I was pleased to hear that No.4. Goshawk had not been fitted with the RR. starter motor pinion, but had the… | ||
| Scan44 | List of modifications and improvements for various vehicle components including bushes, bearings, and drives. | ||
| View original record | (2) by an addition to their height of .025 beyond that shewn on LeC. 1897. (5) CHANGE SPEED SHAFT BUSHES. We consider that steel in place of bronze would be better for the bush on inner end of shaft… | ||
| Scan45 | Technical memorandum outlining required modifications for the Goshawk Gear-Box. | ||
| View original record | RHC ORIGINAL TO E.H. [crossed out] NS. FROM AJS. Copy to Mr. R. [crossed out] Copy to Mr. C.S. [crossed out] re. 4 SPEED SIDE CHANGE SERVO DRIVE GOSHAWK GEAR-BOX. X5770 X.5310 X5370 The following are… | ||
| Scan46 | Telegram from Royce to Hives about working clearance and ignition advance. | ||
| View original record | Printed Form Information: (1155) EM2528 15,000M 21/8/23 R.&Co.Ltd. E1501. POST OFFICE TELEGRAPHS. ORIGINAL. If the receiver of an Inland Telegram doubts its accuracy he may have it repeated on payment… | ||
| Scan47 | The completion and varnish hardening time for Mr. Royce's car at Messrs. Young & Co. | ||
| View original record | TO HS. FROM DA/EV. ORIGINAL DA/EV1/M5.12.24. re. Mr. ROYCE'S CAR AT MESSRS. YOUNG & CO. BROMLEY. X3730 K4219 Messrs Young & Co. inform us that they will complete the work on this car by Tuesday… | ||
| Scan48 | Query on the possibility of removing the exhaust choke valve from the accelerator pedal linkage. | ||
| View original record | TO HS. FROM E. ORIGINAL E2/M8. 12. 24. copy to CJ re. EXHAUST CHOKE VALVE. X8230 X3436 Would you kindly let us know if there is any prospect of being able to do without the exhaust choke valve… | ||
| Scan49 | Design changes for 'V' Series exhaust pipes, including manifold, silencer, and thermometer placement. | ||
| View original record | TO BY FROM E. Copy to -- S.J. Copy to - HS. 'V' SERIES EXHAUST PIPES. X8230 X8050 We send you herewith drawing No. Lc. 1956., arrangement of exhaust pipes, shewing the schemes on which we are engaged… | ||
| Scan50 | Faults with a Goshawk 2 car, specifically the starter motor and back axle. | ||
| View original record | ORIGINAL TO HS. FROM R. R2/MS. 12. 24. 4. GOSHAWK 2. X3597 X4219 X.4286 This car (which is now at WW.) requires the starter motor pinion changing to the RR. pattern Bijur. The thud and noise of this… | ||
| Scan51 | Secret memo regarding the conversion of chassis X.9664 to use a Lucas dynamo and switchbox. | ||
| View original record | ORIGINAL TO BY. FROM E. SECRET E3/M9.12.24. Copy to - CJ. Copy to - HS. E. A. C. re.CONVERSION CHASSIS. X.9664 X30146 X8730 In reply to your telegram concerning the Lucas dynamo and switchbox on the… | ||
| Scan52 | Issues and proposed modifications for stub axle pivots, particularly for models with front wheel brakes. | ||
| View original record | ORIGINAL TO HS. BY FROM R. SECRET. R4/M10.12.24. Copy to CJ. BI. Copy to RG. DA. Copy to E. E. A. C. 2. STUB AXLE PIVOTS. X8420 X9940 49 It will be remembered that the front axle pivot bearings have… | ||
| Scan53 | Engine cooling challenges and radiator design for the 40/50 model. | ||
| View original record | ORIGINAL TO HS. FROM R. Copy to CJ. BI. [Text is struck through] Copy to E B [Text is struck through] ENGINE COOLING - 40/50. Handwritten: x766 x8250 x3656 [x3656 is struck through] For this large D.… | ||
| Scan54 | The dispatch of drawings for oil pump modifications and a wheelcase oil jet for EAC engines. | ||
| View original record | ORIGINAL TO BY. FROM E. S E C R E T. E2/1113.12.24. Copy to G.I. Copy to H.S. E. A. C. 'V' SERIES. V8160 X8770 We send you herewith drawings Nos. Lec. 1959. and 1961., dealing with the oil pump… | ||
| Scan55 | Modifications to a 40/50 chassis body subframe, suggesting a wider dashboard and raised radiator. | ||
| View original record | ORIGINAL TO HS. FROM DA/EV. Copy to C. DA/EV1/M17.12.24. re. BODY SUBFRAME. V8380 X3440 We thank you for your HS14/LG151224., and HS13/LG151224., together with a copy of C4/C131224. We have already… | ||
| Scan56 | Correspondence and testing of Perfect Circle scraper rings from Messrs R. A. Rothermel Ltd. | ||
| View original record | TO HS. FROM E. Copy to OJ. ORIGINAL E2/M18.12.24. V740 re. PERFECT CIRCLE SCRAPER RINGS. V740 We are sending you herewith correspondence from Messrs R. A. Rothermel Ltd., together with a description… | ||
| Scan57 | Revised design for the 20HP exhaust downtake support and sliding spherical joint. | ||
| View original record | ORIGINAL TO FROM E. Copy to - HS. re. 20.HP. EXHAUST DOWNTAKE SUPPORT, AND SLIDING SPHERICAL JOINT. X6238 X We send you herewith LeC. 1967., shewing the revised design for the above, incorporating Mr.… | ||
| Scan58 | Drawings and design alternatives for the 'V' series exhaust fittings and rear silencer brackets. | ||
| View original record | SECRET. EL/M20.12.24. BY. FROM E. Copy to CJ. Copy to - HS. E. A. C. EXHAUST FITTINGS - 'V' SERIES. 18230 We send you herewith drawings Nos. LeC. 1962/65/68., dealing with the above. Before leaving… | ||
| Scan59 | Steering wheel positions, driver seating, and potential vision obstruction issues across various car series. | ||
| View original record | TO BY. FROM DA/EV. SECRET. DA/EV1/M22. 12. 24. Copy to HS. E. A. C. STEERING WHEEL POSITIONS. Y8430 We thank you for your BY14/H191224. entitled steering wheel positions. We assume this applies to 'V'… | ||
| Scan60 | Design progress of an 'Anti Groan Device' for various car models and the Goshawk 3 gearbox casing. | ||
| View original record | TO [redacted] FROM AJS. Copy to [redacted] Copy to [redacted] Copy to - HS. ORIGINAL AJS1/M22. 12. 24. ANTI GROAN DEVICE - 40/50. X1511 / X3435 Referring to your memo. HY10/H19.12.24., and wire of… | ||
| Scan61 | Reported 'groans' on a standard chassis and the effectiveness of a fabric coupling. | ||
| View original record | TO BY. FROM E. Copy to CJ. Copy to - HS. Grosvenor re. GROANS ON STANDARD CHASSIS. X3435 / X1511 In reply to your memo. BY10/H191224., Mr. Stent has reported separately in AJS1/M221224., on the… | ||
| Scan62 | Unsuitability of the current A.T. speedometer due to its size and requesting a smaller trip model. | ||
| View original record | TO FROM DA/EV. DA/EV2/M29.12.24. Copy to - HS. re. A. T. SPEEDOMETER WITH TRIP FOR INSTRUMENT BOARD DESIGN N. SCH.1808. X4308 X4077 The A.T. speedometer shewn on this design is that used on Goshawk,… | ||
| Scan63 | From DA to HS requesting clarification on which design of 40/50 model spare wheel carrier is experiencing failures. | ||
| View original record | ORIGINAL TO HS. FROM DA. DA2/M29.12.24. 40/50. WHEEL CARRIERS. X3633 Referring to HS1/LG221224., and the para. re. the failure of spare wheel carriers, we are not sure whether you refer to a carrier… | ||
| Scan64 | Engine cooling issues, a new fan design, and the benefits of louvres over shutters on bonnets. | ||
| View original record | ORIGINAL TO HS. & EFC. FROM R. R2/M31. 12. 24. Copy to CJ. BJ. Copy to RG. H. Copy to DA. 40/50. WATER BOILING. X766 X3456 X1017 EFC. has found a fan which promises to be better than our standard -… | ||
| Scan65 | Solutions for water boiling in the 40/50 model, including a new fan design and bonnet ventilation. | ||
| View original record | TO | ||
| Scan66 | Requesting information on the extent to which car silencers become choked and measures for cleaning them, with a view to future accessibility. | ||
| View original record | ORIGINAL E2/M31.12.24. TO HM. FROM E. Copy to - CJ. Copy to - HS. re. SILENCERS. X3642 We should be glad if you could supply some information as regards the extent to which silencers used on our cars… | ||
| Scan67 | 'V' series ignition advance control and relay advance oil specifications. | ||
| View original record | ORIGINAL TO HS. & E. FROM R. SECRET. R1/M31.12.24. Copy to CJ. BJ. Copy to RG. BY. Copy to DA. E. A. C. 'V' SERIES. IGNITION ADVANCE. X8685 I had arranged that if the relay advance was not yet… | ||
| Scan68 | Chosen ignition advance governor curve for the EAC engine. | ||
| View original record | TO HS. FROM E. ORIGINAL SECRET. E1/M31.12.24. Copy to CJ E. A. C. OIL RELAY IGNITION GOVERNOR. X8685 In reply to your memo. HS/RM1/LG291224., drawing No. LeC. 1917., shews three different ignition… | ||
| Scan69 | Secret memo regarding the oil relay ignition governor, suggesting a strainer be fitted. | ||
| View original record | TO HS. FROM E. S E C R E T. E4/M31.12.24. E. A. C. X8685 re. OIL RELAY IGNITION GOVERNOR. Regarding the above we suggest that you fit up a strainer with some very fine gauze and observe its effect on… | ||