Rolls-Royce Archives
| Identifier | Entry | ||
| Scan0 | Design improvements for a petrol level indicator glass and washer assembly. | ||
| View original record | ORIGINAL TO SY. FROM R. (At Le Canadel.) C. to CJ. BJ. MOR. PN. C. to HS. RE. GOSHAWKS. RE. INDICATOR FOR PETROL LEVEL. X3596 This works extremely well and is very useful. The glass however is badly… | ||
| Scan1 | Letter from F. H. Royce discussing the unsuitability of the Goshawk/20.HP chassis for heavy bodies and its potential harm to the company's reputation. | ||
| View original record | ORIGINAL TO CJ. FROM R. (At Le Canadel.) R1/M2.5.23. c. to BY. HS. EP. c. to E. DA. X3730 X4219 My dear CJ., Since writing to you yesterday I think I have come across the reason for our difference of… | ||
| Scan2 | Proposal to create a standard set of drawings for an improved, universal pipe nipple design. | ||
| View original record | ORIGINAL TO BY. FROM E. c. to CJ. c. to HS. RE. STANDARD SET OF NIPPLES. You have no doubt noticed in the later LeC. designs, that an improved form of pipe nipple is being increasingly used in which… | ||
| Scan3 | Secret memo from E. to H.S. discussing the progress of an engine's development and parts. | ||
| View original record | R.R. 235A (100 T) (S.H. 159, 11-8-20) G. 2800 [Stamp]: ORIGINAL TO HS. FROM E. SECRET. E. A. C. E2/M5.5.23. [Handwritten]: X9770 / X9000 [crossed out] X.9050 [Handwritten]: Copied now thanks for memo… | ||
| Scan4 | Design improvements for the Goshawk 11 petrol level indicator, including dial markings and needle assembly. | ||
| View original record | TO BY. FROM DA. c. to CJ. c. to WCR. c. to HS. ORIGINAL DA1/M9.5.23. GOSHAWK 11. PETROL LEVEL INDICATOR. X4580 We send herewith N.scheme 1408. shewing the enlarged dial which has been asked for on… | ||
| Scan5 | Standardisation and fitting issues of a side wheel carrier for the 40/50 model. | ||
| View original record | F.R. 235A (100 T) (S.H. 159, 11-8-20) G. 2800 ORIGINAL TO HS. FROM DA. DA2/M9.5.23. RE. RR. SIDE WHEEL CARRIER ON 40/50. X3633 Sales are very anxious to standardise this carrier and we understand are… | ||
| Scan6 | The performance of an improved miniature sparking plug and a request for adapters. | ||
| View original record | TO HS. FROM E. ORIGINAL. E2/M9.5.23. RE. MINIATURE SPARKING PLUGS. X4560 The improved model of the above, one set of which you sent to WW., has done very well indeed, having kept perfectly clean all… | ||
| Scan7 | Chassis improvements for axles, dynamo drives, track width, and brake lever design. | ||
| View original record | TO CJ. BJ. } FROM R. HS. WCH. } DY. DAW. } E. MS. } ORIGINAL R1/105.5.23. [Handwritten:] X4219 X4256 X3522 X4252 I think the scheme of buying machines and making all our back axle bevels absolutely… | ||
| Scan8 | Fitting experimental parts to Goshawk cars and the overweight body of a Maythorn saloon. | ||
| View original record | ORIGINAL TO HS. FROM R. c. to CJ. BJ. [Handwritten:] X3730 [crossed out] X4219 X4538 Please fit up all proposed experimental pieces for me to see on either No.4. or No.6. Goshawk. Both are open bodies… | ||
| Scan9 | Design specifications and performance requirements for a starter motor. | ||
| View original record | R.R. 235A (100 T) (S.H. 159. 11-8-20) G. 2800 ORIGINAL TO EFC. FROM R. SECRET. R1/M16.5.23. c. to GJ E. A. C. X.9620 STARTER MOTOR. This certainly should be the size having a 5" dia. carcase. In… | ||
| Scan10 | Requesting specific improvements to be fitted to Goshawk vehicles. | ||
| View original record | ORIGINAL TO HS. FROM R. R1/M17.5.23. GOSHAWK IMPROVEMENTS. X4219 Will you please keep in touch with Paris and get 4.Goshawk back as soon as possible, and also get this or 6.Goshawk fitted up with all… | ||
| Scan11 | Outlining reasons for disagreeing with an alteration to the standard valve and wick pattern for clutch spigot lubrication. | ||
| View original record | TO HS. FROM R. c. to CJ. E. c. to DA. BY. ORIGINAL R4/M17.5.23. 40/50. LUBRICATION OF CLUTCH SPIGOT. In reply to your HS6/LG10523. I have definite-ly said that I do not agree to altering these from… | ||
| Scan12 | Requesting standardisation sheets for an oil level indicator instead of a side tank on the 40/50 model to improve the wheel carrier. | ||
| View original record | TO HS. FROM R. c. to DA. ORIGINAL 40/50 WHEEL CARRIER & OIL LEVEL INDICATOR. R2/M17.5.23. X3527 X3633 Will you please get standardisation sheets going for oil level indicator instead of side tank.… | ||
| Scan13 | Confirming the definitive decision to condemn steam cooling technology. | ||
| View original record | TO CY.) FROM R. HS.) c.c. to CJ. BJ. ORIGINAL. R5/M17.5.23. STEAM COOLING RECEIVED X766 Replying to your HS7/LG10523. I understand steam cooling has been condemned as worse than the sins it was to… | ||
| Scan14 | Correspondence about replacing a Beatonson body on a 20.HP Goshawk 11 with a new all-weather design. | ||
| View original record | R.R. 235A (100 T) (S.H. 159, 11-3-20) G. 2800 ORIGINAL TO HS. FROM DA/EV. c. to R. & IHS. RE. BEATONSON BODY ON 20.HP. /3730 We thank you for your HS4/LG30423. and the attached correspondence. As soon… | ||
| Scan15 | The mounting of RB.71 headlamps onto Goshawk wings, referencing N.scheme 1417. | ||
| View original record | ORIGINAL, TO BY. FROM DA. c. to CJ. c. to HS. DA1/M18.5.23. GOSHAWK 11. HEAD LAMPS. X4090 We send herewith N.scheme 1417. shewing a method of mounting RB.71 lamp on the Goshawk wings. Mr. Royce would… | ||
| Scan16 | Replacement of a vehicle, referred to as the Goshawk, which has an 'ugly Mulliner body'. | ||
| View original record | TO HS. FROM R. ORIGINAL X1698 We are expecting you here any time now, and possibly RG. wishes to come as soon as convenient. Perhaps you could see him and arrange something. The Goshawk you are… | ||
| Scan17 | Request to urge the production of a sample set of spanners as per drawing LeC. 1645. | ||
| View original record | ORIGINAL. TO ~~BY~~ FROM E. c. to ~~CJ.~~ HS. RE. SPANNERS. E1/M24.5.23. X4083 / X1027 Mr. Royce is anxious to see the sample set of spanners which we asked you to make to drawing LeC. 1645. Could you… | ||
| Scan18 | Suggesting a method for fixing the lubricator for the rear spring roller to avoid fouling the bodywork. | ||
| View original record | ORIGINAL TO BY. FROM DA. c.c. to GE. c. to HS. DA1/M24.5.23. X2628 We send herewith N. scheme 1418., shewing the suggestion we make for fixing the lubricator for the rear spring roller, so that it… | ||
| Scan19 | Potential improvements and options for instrument board lighting. | ||
| View original record | TO LHS. FOR SP. FROM DA/EV. c. to R. HS. EFC. RE. INSTRUMENT BOARD LIGHTS. It is proposed to attempt to make some improvements in the lighting of instruments, and we would like the various people… | ||
| Scan20 | Requested modifications for a Goshawk 11 car, including a new body and a list of seven specific improvements. | ||
| View original record | R.R. 235a (100 T) (S.H. 159, 11-8-20) G. 2800 ORIGINAL TO HS. FROM R. c. to CJ. c. to BJ. c. to HHS. RECEIVED 5. GOSHAWK 11. (BEATONSON BODY.) X3730 X4219 The body on this car should be changed for a… | ||
| Scan21 | Approving the use of Jeavons Spring Gaiters as an alternative to the Wefco type. | ||
| View original record | TO HS. FROM R. c.c. to CJ. DA. c.c. to E. BY. ORIGINAL SPRING GAITERS. X3745 R3/M28.5.23. Replying to your memo. HS2/LG16523, I agree to the use of of Jeavons Spring Gaiters as an alternative to the… | ||
| Scan22 | Sliding coupling scheme for the Goshawk 11 magneto drive. | ||
| View original record | ORIGINAL. TO BY. FROM E. c. to CJ. c. to HS. c. to WP. c. to EPC. E1/M29.5.23. GOSHAWK 11. MAGNETO DRIVE WITH SLIDING COUPLING. X4327 We thank you for your blue print No.485. We have traced over this… | ||
| Scan23 | Complaint about oil being flung from the propeller shaft on Goshawk models, staining carpets. | ||
| View original record | ORIGINAL TO HS. FROM DA. GOSHAWK 11. X4254 X4255 DA1/M30.5.23. The Coachbuilding Dept. claim that oil is still flung out of the propeller shaft both at front and rear and is causing them some trouble… | ||
| Scan24 | Points for consideration and experiment on the dynamo and other electrical equipment, including brush wear, holders, and connectors. | ||
| View original record | R.R. 285A (100 T) (S. H. 159, 11-8-20) G. 2800 ORIGINALS E.F.C. We answer these points of letter TO EFC. FROM R. c. to CJ. BJ. (crossed out) c. to WOR. BY. HS. X/402 X4383 X4333 With reference to the… | ||
| Scan25 | Bent push rods on the 20 HP model, specifically regarding insufficient valve spring clearance and incorrect tappet adjustments. | ||
| View original record | TO B.J. FROM R. c. to G.J. c. to B.Y. c. to H.S. c. to F.P. ORIGINAL R1/M30.5.23. 20. HP. BENT PUSH RODS. X4226 X RECEIVED In reply to your memo. BJ11/H25523., probably the clearance as actually made… | ||
| Scan26 | Noisy starter on a car used by Mr. Royce, requesting an update on suggested improvements. | ||
| View original record | TO HS. FROM E. Copy to BY. EFC. re. 5.G.11. STARTER V3587 With reference to the above car which Mr. Royce used during his last visit to Le Canadel, it is noticed that the starter is very noisy. Mr.… | ||
| Scan27 | Clearance issues with the Goshawk 11 tappet adjustment, referencing specific drawings and measurements. | ||
| View original record | TO R. FROM E. c. to GJ. c. to HS. c. to HY. ORIGINAL. E2/M31.5.23. GOSHAWK 11. TAPPET ADJUSTMENT. X4226 Regarding Mr. Hives statement that there is very little clearance on the Goshawk before either… | ||
| Scan28 | Alteration to the Goshawk slipper flywheel, noting an un-discussed reduction in the number of springs. | ||
| View original record | ORIGINAL TO R. FROM E. c. to BY. c. to HS. RE. GOSHAWK SLIPPER FLYWHEEL. X4221 Regarding the alteration to the Goshawk slipper flywheel, I agree that Mr. Bailey mentioned the alteration he had made to… | ||
| Scan29 | Series of dynamo tests varying the main brush position to determine performance curves. | ||
| View original record | To R. & E. from EPC. C. Ry. & EH. C. CJ. & FN. C. Tas. C. Wor/Mr. Brock. ORIGINAL X.4383 - WR GODDARD DYNAMO BRUSH POSITION. X 4383 We have now completed the series of dynamo tests referred to in our… | ||
| Scan30 | Analysis of experimental dynamo performance curves and modifications, including tests on various machine configurations. | ||
| View original record | Contd. -2- RFCL/T3.5.23. Sheet I gives curves for our experimental standard R.R. Goshawk dynamo. Sheet II " " for standard R.R. Goshawk dynamo No.288 quite recently taken from production. Sheet III "… | ||
| Scan31 | Page from a report comparing a 140 turn 20 SWG field winding against the standard field winding. | ||
| View original record | Contd. -2- EFCW/T3.5.25. As regards the 140 turn 20 SWG. field winding, this also appears to be no net improvement over the standard field winding, the early stages of the curves being definitely… | ||
| Scan32 | Graph showing the results of main brush position tests on a Goshawk dynamo. | ||
| View original record | I OPERATING VOLTAGE Amps | Volts 0 | 13.8 1 | 13.9 2 | 14.0 4 | 14.1 5 | 14.2 6 | 14.3 7 | 14.4 8 | 14.5 9 | 14.6 10 | 14.7 11 | 14.8 12 | 14.9 12.5 | 15.0 | 15.25 AMPERE OUTPUT DYNAMO R.P.M. MAIN… | ||
| Scan33 | Graph showing the results of main-brush position tests on a Goshawk Dynamo No. 288. | ||
| View original record | II MAIN-BRUSH POSITION TESTS OF STANDARD R GOSHAWK DYNAMO No 288. Control brush adjusted in each case, to give a final temperature of from 70°-74°C at maximum load. Final ambient temperature 21°C.… | ||
| Scan34 | Performance graph of main-brush position tests on a Goshawk dynamo, plotting ampere output against dynamo RPM. | ||
| View original record | III HJL / 25-5-33 E-70 MAIN-BRUSH POSITION TESTS ON R GOSHAWK DYNAMO, WITH 140-TURN 20 S.W.G. FIELD-COILS Control brush adjusted in each case to give a final Temperature of from 70° to 75°C, at… | ||
| Scan35 | Graph of main-brush position tests on a Goshawk dynamo, plotting ampere output against RPM. | ||
| View original record | IV H/G (29-III-23.) E 7 C MAIN-BRUSH POSITION TESTS OF R GOSHAWK DYNAMO WITH THICK CARCASE AND SMALL AIR-GAP Control brush adjusted in each case, to give a final temperature of from 77° to 80°C at… | ||
| Scan36 | Limitations of the vacuum feed system for the 40/50 HP chassis, particularly at high altitudes. | ||
| View original record | To R. from Hs. c. to CJ. c. to E. c. to Da. c. to BY. ORIGINAL. VACUUM FEED FOR 40/50 H.P CHASSIS: X3579 We have three 40/50 H.P. cars running fitted with the vacuum feed. So far we have had no… | ||
| Scan37 | Reliability of vacuum and pressure fuel feed systems for automobiles. | ||
| View original record | contd:- -2- We understand the Hudson people have recently started to fit to their cars a hand-operated suction pump for exhausting the vacuum tank in case of emergency. Another system being used in… | ||
| Scan38 | Table of results for Autovac tests on a standard carburetter and induction pipe. | ||
| View original record | AUTOVAC TESTS. TABLE OF RESULTS WITH AUTOVAC ON 40/50 R.R. STANDARD CARBURETTER AND INDUCTION PIPE. All readings at full throttle. TABLE HEADERS: Column 1: R.P.M. Column 2: Average engine demand.… | ||
| Scan39 | Calculation of the performance of an Autovac fuel system at high altitudes. | ||
| View original record | ACTION OF AUTOVAC AT HIGH ALTITUDES. The ratio of the pressure in the inside of induction manifold to that on the outside will remain constant. Proved by Mr. Clerk for streamline flow and may be taken… | ||
| Scan40 | Graph plotting the results of Autovac tests, showing possible travel distance against engine RPM under various conditions. | ||
| View original record | SHEET 2 AUTOVAC TESTS DISTANCE POSSIBLE TO TRAVEL STARTING WITH AUTOVAC & FLOAT CHAMBER OF CARB FULL. FULL THROTTLE. TOP GEAR. ACTUAL RESULTS WOULD BE BELOW THESE CALCULATED RESULTS. IT IS ASSUMED FOR… | ||
| Scan41 | Tests on the Autovac fuel system, including suction levels and performance graphs. | ||
| View original record | AUTOVAC TESTS. SHEET 4 40-50 R.R. CARB & STANDARD INDUCTION PIPE. INDUCTION PIPE DEPN & SUCTION ON PETROL SHOWING EFFECT OF NON RETURN VALVE FULL THROTTLE SUCTION INCHES OF WATER R.P.M. SUCTION ON… | ||
| Scan42 | Chart from Autovac tests showing petrol supply variation based on lift height, different fuel levels in the tank and vehicle gradient under full throttle conditions. | ||
| View original record | AUTOVAC TESTS 40-50RR RR CARB. & STANDARD INDUCTION PIPE CHART SHOWING VARIATION OF PETROL SUPPLY WITH THE HEIGHT THRO' WHICH IT HAS TO BE RAISED FROM PETROL TANK CAUSED BY DIFFERENT LEVELS OF FUEL IN… | ||
| Scan43 | Arrangement to produce two sample Watford magnetos for the Goshawk ignition system. | ||
| View original record | E. from HS. Hsl/LG9.5.23. WATFORD MAGNETOS. x 355/ With reference to the latest proposed arrangements for the Magneto ignition on the Goshawk. BY. and myself paid a visit to the Watford people last… | ||
| Scan44 | On the road testing and modification of 20 HP carburation, comparing a modified Goshawk-11 engine to an original Goshawk-1. | ||
| View original record | To R. from Hs. c.c. to CJ. c.c. to E. c.c. to Dm. c.c. to HY. ORIGINAL Hell/LG10.8.23. 20 HP. CARBURATION. X4228 From tests on the road we have proved that the original Goshawk-1 with the latest… | ||
| Scan45 | Engine performance improvements, detailing changes in consumption, torque, and acceleration for a 20 HP car. | ||
| View original record | contd:- -2- We are doing this at present. From the results we have obtained so far,however, we can safely say that the consumption will be improved 10 or 12% and that the low speed torque will be… | ||
| Scan46 | The issues found with a Rushmore Steam Cooling system after a 3000-mile test on a 40/50 car. | ||
| View original record | To R. from Hs. c.c. to CJ. c.c. to E. c.c. to Ng. ORIGINAL. Hs7/LC10.5.23. STEAM COOLING. X766 We have heard from CY. in answer to our query, that they have been running a 40/50 car at Springfield… | ||
| Scan47 | Friction damping plate working loose on a 20 HP engine's latest type spring drive and a suggested fix. | ||
| View original record | To R. from Hs. c.c. to CJ. c.c. to K. c.c. to Ss. c.c. to EY. ORIGINAL Hs13/LG10.5.23. 20 HP. LATEST TYPE SPRING DRIVE. X4222 We have found that on the two engines we have been running this latest… | ||
| Scan48 | Reliability issues and a new design for the 40/50 HP clutch spigot lubrication. | ||
| View original record | To R. from Hs. c. to CJ. c. to E. c. to Da. c. to BY. ORIGINAL (stamped) X872 (handwritten) Hs6/LGC.10.5.23. 40/50 H.P. LUBRICATION OF CLUTCH SPIGOT. X872 Although we do not agree with the Springfield… | ||
| Scan49 | Blueprint detailing the oiling arrangement for a clutch bearing. | ||
| View original record | G8913 OIL HERE. CLUTCH OILING ARRANGEMENT FOR CLUTCH BRG. ROLLS-ROYCE, LIMITED PRINT ROOM 19 MAR. 1923 DERBY G8913 15-3-23 SCALE 1/1 | ||
| Scan50 | The performance of Bijur electrical units after 17,300 miles, detailing issues with voltage regulators. | ||
| View original record | To R. from Hs. c. to CJ. c. to E. c. to Da. c. to BY. ORIGINAL HsS/LC10.5.23. BIJUR ELECTRICAL UNITS. X 3587 / X 3560 X 3231 The Bijur electrical units which were fitted to 4.EX Car when it was in… | ||
| Scan51 | The failure of intermediate bearings in a 20 HP engine using a larger crankshaft, recommending further testing. | ||
| View original record | To R. from Hs. c. to CJ. c. to E. c. to HY. c. to Da. ORIGINAL Hs12/LC10.5.23. 20 HP. LARGER CRANKSHAFT X4221 We found, that the only engine in which we have been running the larger crankshaft, the… | ||
| Scan52 | Cover note for horsepower charts for the Goshawk and 40/50 chassis, replacing previous curves. | ||
| View original record | To R. from Hs. c. to CJ. c. to E. c. to Da. c. to BY. c. to EP. ORIGINAL. Hs3/LGH1.5.23. HORSE POWER - GOSHAWK AND 40/50 CHASSIS. X.4134 X.3056 We attach hereto H.P. charts in connection with the… | ||
| Scan53 | Graph comparing M.E.P. and Horse Power curves for Goshawk II and 40/50 engines from bench and dynamometer tests. | ||
| View original record | M.E.P. & POWER CURVES GOSHAWK II & 40/50 (26 CU. INS. DISPLACEMENT) GII. ALL CURVES TAKEN WITH STANDARD EXHAUST SYSTEMS ON THE BENCH & DYNAMOMETER. 40/50. 26 CU. INS. DISPLACEMENT. ALL CURVES TAKEN… | ||
| Scan54 | Positioning of a 40/50 spare wheel carrier on a 6-EX car. | ||
| View original record | Da. from Hs. ORIGINAL Hs6/LG14.5.23. 40/50 SPARE WHEEL CARRIER. X3633 Referring to your Da2/M14.5.23. We attach hereto a rough sketch showing the position of the wheel carrier on 6-EX Car. We have had… | ||
| Scan55 | The dispatch and testing of Miniature Lodge Sparking Plugs. | ||
| View original record | ORIGINAL. To E. from Hs. MINIATURE LODGE SPARKING PLUGS. X4560 We are sending to you today under separate cover. 12 of the above plugs, also 2 adaptors and one spanner. We should like you to let us… | ||
| Scan56 | Testing Jeavons Spring Gaiters as an alternative to those supplied by the Wefco Co. | ||
| View original record | To R. from Hs. c. to S. c. to CJ. c. to Da. c. to EY. ORIGINAL SPRING GAITERS. X3745 We have been testing Jeavons Spring Gaiters as an alternative to those supplied by the Wefco Co. These gaiters are… | ||
| Scan57 | Visit from a Dunlop engineer to demonstrate new low-pressure tyres on a Rover and a Cadillac. | ||
| View original record | To R. from Hs. c.c. to CJ. c.c. to E. c.c. to De. c.c. to BY. ORIGINAL. Hs5/LG16.5.23. TYPES. X4565 (crossed out) X3538 We have recently had a visit from Mr. Macbeth Experimental Engineer for the… | ||
| Scan58 | Testing new Dunlop tyres and wheels on 20 HP and 40/50 HP models. | ||
| View original record | contd:- -2- The rim, having no loose flange, is water-tight. The weight of the complete tyres and wheels is practically the same as the present standard. The peripheral weight is less because their… | ||
| Scan59 | Test report on the comparative wear of case-hardened versus bronze bushes for spring shackles on a Goshawk-11 car. | ||
| View original record | To R. from Hs. c.c. to CJ. c.c. to H. c.c. to Da. c.c. to EY. ORIGINAL Hs3/LG16.5.23. CASEHARDENED BUSHES FOR SPRING SHACKLES. X4261 We have been running 6-Goshawk-11 with all the shackles on one side… | ||
| Scan60 | The bench and road tests of 'Pynol' fuel, a German-developed mixture of petrol and gas oil. | ||
| View original record | To R. from Hs. c. to EJ. ORIGINAL REPORT ON "PYNOL" FUEL. X1555 X985 This fuel was submitted to us by the Oil Supply Corporation, 54A, Parliament Street, London, S.W.1., on the recommendation of Lord… | ||
| Scan61 | The performance of 'Pynol' fuel compared to petrol in road and bench tests. | ||
| View original record | contd: -2- float mechanism) and also owing to the viscosity being higher, the mixture with Pynol was actually weaker than with petrol. On the road we could not get as good acceleration or hill… | ||
| Scan62 | Bench tests on a Goshawk engine comparing Petrol and Pynol fuels. | ||
| View original record | 15.5.23. BENCH TESTS. "PYNOL" TESTS ON GOSHAWK. Comparison between Petrol and "Pynol". Conditions. Barometer = 29.6" Sp.Gr. petrol used = 0.752 " Pynol " = 0.804 Carburetter was set in each case to… | ||
| Scan63 | Road tests comparing 'Pynol' motor fuel with Petrol in a 40/50 car. | ||
| View original record | REPORT ON ROAD TESTS OF "PYNOL" MOTOR FUEL. These tests were carried out on a 40/50 R-R Car (49-GB) with the object of comparing the results obtained by using "Pynol" with those obtained by using… | ||
| Scan64 | Hill climbing performance test results comparing Petrol and Pynol fuels on Pistem Hill. | ||
| View original record | (3) HILL CLIMBING. Climb of Pistem Hill. | | PETROL. | PYNOL. | |---|---|---| | Speed at start | 5 | 5 m.p.h. | | Speed on 2nd. corner (min.) | 21 | 20 " | | Speed at finish. | 31 | 28 " | | Max.… | ||
| Scan65 | Graph comparing the performance and consumption of Petrol and Pynol fuels in a Goshawk engine. | ||
| View original record | FUEL TESTS. H.P. GIVEN BY PETROL & PYNOL RESPT. GOSHAWK S.G. PETROL .752 S.G. PYNOL .804 BAROMETER - 740M.M. B.H.P. R.P.M. PTS/HP/HR. PETROL PYNOL CONSUMPTION PETROL & PYNOL COMPARED. MIXTURE ADJUSTED… | ||
| Scan66 | Graph of fuel tests showing the distillation curves and chemical analysis for Pynol and Shell No. 1 fuels. | ||
| View original record | FUEL TESTS DISTILLATION CURVE FOR PYNOL S.G. .804 BOILING PT. 91°C. FIRST DISTILLATE OVER AT 73°C. ANALYSIS OF PYNOL OLEFINS & DI-OLEFINS 18.8% AROMATIC HYDRO-CARBONS 72.0% PARIFFINS & CYCLO PARIFFINS… | ||
| Scan67 | Proposing modifications to the 40/50 HP gearbox for easier oil level checking and filling. | ||
| View original record | To R. from Hs. c. to CJ. c. to E. c. to Da. c. to BY. ORIGINAL. Hs7/LG24.5.23. 40/50 HP: GEARBOX. X3426 On the present 40/50 HP. Gearbox, in order to check the oil level or to add fresh oil, it is… | ||
| Scan68 | Potential damage to the 20 HP electrical system when running without a battery and the proposed solutions. | ||
| View original record | To R. from EPC. c. to OJ. c. to E. c. to Ry. c. to ED. c. to By/MHH. ORIGINAL EFC2/T24.5.23. X.4338 - 20. H.P. ELECTRICAL SYSTEM. Referring to EFG/H23.5.23, previous to the addition of magneto to 20… | ||
| Scan69 | Battery ignition failures, their causes, and potential solutions such as instruction book updates or adding a voltage regulating device. | ||
| View original record | To R (Contd) -2- EFC2/T24.5.23. also possible to supply the battery ignition, excepting- perhaps at starting and slow speeds, it being supposed that the failure has, say in 95% of the cases, been a… | ||
| Scan70 | Failures in Goshawk ignition condenser connections due to high-frequency currents and manufacturing tolerances. | ||
| View original record | To R. from EFC. c.c. EY. E. EFCB/T26.5.23. X.443D - RE GOSHAWK CONDENSER. ---------------------------- The present design of Goshawk ignition condenser connections requires great care in manufacture… | ||
| Scan71 | Improving condenser contacts to achieve a more certain metallic connection. | ||
| View original record | EFC2/T28.5.23. -2- Contd. Could we not have a design which would give more certain metallic connection ? In the meanwhile we are hoping to improve the contacts on these parts by having a piece of… | ||
| Scan72 | Issues with tappet clearance on the 20 HP model and recommending the adoption of the E.A.C. type of tappet adjustment. | ||
| View original record | To R. from Hs. c. to CJ. c. to E. c. to Da. c. to EY. ORIGINAL. 20 HP. - TAPPET ADJUSTMENT. Y4226 When the cam is on the top of its lift, there is very little clearance before either the spring… | ||
| Scan73 | Comparative performance curves for the Goshawk dynamo. | ||
| View original record | To R & E. from EFC. c. CJ. & PH; c. Da. c. Hy. c. EP. ORIGINAL EPC1/T28.5.23. X.4363- HR. GOSHAWK DYNAMO. Herewith please receive photostat copy of further Goshawk dynamo curves. These are comparative… | ||
| Scan74 | The performance curves and continuous running tests of standard and experimental dynamos. | ||
| View original record | Contd. -2- EFCX/T28.5.23. These curves for the standard machines are therefore now representative of the typical performance of these dynamos in the best condition of brush position and corresponding… | ||
| Scan75 | Programme for investigating externally controlled chassis generators. | ||
| View original record | Contd. -3- EFC1/T28.5.23. proceed with our programme of investigations of externally controlled chassis generators and our first item in this connection is the completion of tests on the Scintilla… | ||
| Scan76 | Comparative performance graph of various 'Goshawk' dynamos, plotting ampere output against dynamo RPM. | ||
| View original record | AMPERE OUTPUT COMPARATIVE PERFORMANCES OF VARIOUS 'GOSHAWK' DYNAMOS WITH MAIN BRUSHES SET 9°(approx) RETARDED FROM NO-LOAD NEUTRAL POSITION TOGETHER WITH CURVE OF MINIMUM SPECIFIED PERFORMANCE… | ||