Rolls-Royce Archives
| Identifier | Entry | ||
| Scan0 | Confirmation of a telegram requesting a 'Forty Fifty' car for photographic and testing purposes. | ||
| View original record | ORIGINAL CONFIRMATION OF TELEGRAM. ROYCAR. DERBY. X2565 / X448 WEST WITTERING. 2nd. July 1923. HIVES - HAVE YOU A FORTY FIFTY OF FIRST CLASS APPEARANCE YOU COULD SEND HERE FOR PHOTOGRAPHIC PURPOSES… | ||
| Scan1 | Confirmation of a wire from Royce to Hives requesting a chassis for urgent testing. | ||
| View original record | ORIGINAL. X3923 CONFIRMATION OF WIRE. WEST WITTERING. 2nd. JULY 1923. ROYCAR. DERBY. HIVES - IF YOU HAVE NOT 6.EX. OR ANY SIMILAR CAR BRING A CHASSIS IN BUSINESSLIKE TESTING OUTFIT. WILL MEET YOU IN… | ||
| Scan2 | Decision to design a new bracket for the Goshawk standby magneto instead of altering crankcases. | ||
| View original record | TO BY. FROM E. c. to HS. RE. GOSHAWK MAGNETO. ORIGINAL El/M4. 7. 23. K3551 Further to our last memo. on the question of the fitting of the small Watford standby magneto, Mr. Royce has decided that no… | ||
| Scan3 | Mr. Royce's idea for a vacuum reservoir and associated valves for the 40/50 model. | ||
| View original record | TO HS. FROM DA. ORIGINAL DA1/M4.7.23. RE. VACUUM FEED ON 40/50. X3579 X3575 X3503 What Mr. Royce is now thinking of in con-nection with this question is a vacuum reservoir which is maintained by the… | ||
| Scan4 | Issues with the 20HP dipping headlights, including lever fitment, spring load, and reflector rattle. | ||
| View original record | ORIGINAL TO BY. FROM DA/EV. DA/EV1/M4.7.23. s. to R. c. to HS. RE. 20.HP. DIPPING HEAD LIGHTS. X4555 We have now fitted the correct lever on the instrument board, and have made the lamps work. The… | ||
| Scan5 | Specifications for two alternative springs for dipping headlamps and a parts request. | ||
| View original record | RE GI DIPPING HEAD LAMPS SPRING TO GIVE 10 IN LBS ON LAMP C'SHAFT WIRE .116 DIA 30 TURNS. MEAN RAD. = .410. INITIAL DEFLEXION. 166° --- TORQUE = 10 IN LBS. WORKING DEFLEXION 70°, TOTAL 236° --- TORQUE… | ||
| Scan6 | Modifications to the Goshawk 11 petrol tank filter and sump. | ||
| View original record | ORIGINAL TO BY. FROM DA. c. to CJ. WOR. c. to HS. EP. DA2/M5.7.23. GOSHAWK 11. PETROL TANK. X4266 Please receive N. scheme 1431. shewing a modified filter and bottom sump intended to raise the latter… | ||
| Scan7 | Fitting and dimensions of headlamps for a 20 HP chassis. | ||
| View original record | TO BY. FROM DA/EV. ORIGINAL DA/EVL/M5.7.23. c. to HS. 20. HP. CHASSIS HEAD LAMPS. X4090 We thank you for your BY/C15/H29623., and note that you propose at some future date to raise the lamps 1"… | ||
| Scan8 | Implementation of side levers and seating accommodation for the Goshawk model. | ||
| View original record | TO EY. FROM DA/EV. H. to OJ. c. to HIS. c. to HS. ORIGINAL DA/EV2/116.7.23. V3228 X5730 GOSHAWK SIDE LEVERS,& SEATING ACCOMMODATION. We send herewith N.scheme 1429, shewing the seating accommodation… | ||
| Scan9 | Design progress and supply of drawings for the Goshawk side levers. | ||
| View original record | TO CJ: FROM R. ORIGINAL R1/M6. 7. 23. c. to WOR. BJ. c. to HS. RE. GOSHAWK SIDE LEVERS. X3528 X3730 c. to BY. We are now so far advanced with the design that we can supply drawings of the position of… | ||
| Scan10 | Modifications to the Goshawk engine's valve timing, including cam angles and clearances. | ||
| View original record | TO HS. FROM R. c. to CJ. OY. EP. ORIGINAL. R4/M6.7. 23. GOSHAWK VALVE TIMING. X1770 X4226 I understand from the experiments on Gos.l. that it is advisable to somewhat modify the valve timing on… | ||
| Scan11 | Alternative design for the Goshawk 11 steering pendulum lever ball end and requesting a trial piece. | ||
| View original record | TO BY. FROM DA. ORIGINAL DA3/M6.7.23. C. to Cd. WOR. C. to HS. EP. GOSHAWK 11. STEERING. X4263 X205 We are not sure that we like the keys in the ball end on the pendulum lever shewn on F.51238. and… | ||
| Scan12 | Recommending the standardisation of a 17.5-inch celluloid covered steering wheel for the 40/50 model. | ||
| View original record | ORIGINAL. TO HS. FROM R. R2/M6.7.23. 40/50. STEERING WHEEL. X3465 The 17½" celluloid covered wheel fitted to 6.EX. seems particularly pleasing and I hope it will be made standard as quickly as… | ||
| Scan13 | Proposals for routing the H.T. wire for the Goshawk 11 magneto ignition, including a sketch. | ||
| View original record | TO HS. FROM E. c. to GJ. BY. GOSHAWK 11. MAGNETO IGNITION. X. 3551 K4078 Regarding the manner in which the H.T. wire from the standby magneto shall be conveyed to the battery distributor our proposal… | ||
| Scan14 | The Goshawk & 40/50 electrical systems, warning against running the dynamo without a battery and proposing a warning plate. | ||
| View original record | TO EFC. FROM R. ORIGINAL. R1/M10.7.23. 3 c. to GJ. BJ. c. to HY. HS. c. to EP. PN. GOSHAWK & 40/50 ELECTRICAL SYSTEMS. x4165 x4338 Referring to the condition of running the dynamo without the battery… | ||
| Scan15 | Requested modification for the Goshawk 11 Magneto Bracket. | ||
| View original record | TO DY. FROM E. ORIGINAL E1/M12. 7. 23. c. to GJ. c. to HH. c. to EPC. GOSHAWK 11. MAGNETO BRACKET. A 3551 We send you herewith drawing No. LeC. 1742 showing the above. The magneto on this drawing has… | ||
| Scan16 | Goshawk II engine timing, comparing standard and proposed cam settings with diagrams. | ||
| View original record | TO HS. FROM E. ORIGINAL GOSHAWK 11. TIMING. Y3942 Referring to the diagrams of comparative timings you left at WW. particularly to the one giving the average timing for Goshawk 11. present standard,… | ||
| Scan17 | Note with a diagram discussing cam duration, lift, and angle between cams. | ||
| View original record | (2) E 5 11 I .010 CLEARANCE ANGLE BETWEEN CAMS = 105 1/4° I 32 45 E we actually have to make a cam with a shorter duration of lift than Lec.1050. at 10.m. clearance. I also find that we have to make… | ||
| Scan18 | Mr. Royce's dissatisfaction with an oil level indicator for chassis 6.EX and proposing a new design. | ||
| View original record | ORIGINAL TO HS. FROM E. c. to CJ. BY. E4/M12.7.23. RE. OIL LEVEL INDICATOR. V3527 In reply to your memo. HS2/LG7723., would you kindly note that Mr. Royce is not satisfied with the direct reading… | ||
| Scan19 | Modifications to the Goshawk II engine timing and exhaust cam. | ||
| View original record | ORIGINAL 2 TO HS. FROM R. c.c. to CJ. BJ. WOR. c.c. to PN. BY. EP. RE. GOSHAWK II. TIMING. V3942 (struck out) X1770 Our letter of the 12th inst. states that the exhaust cam is too short as given on… | ||
| Scan20 | Issue with brakes being spoilt by over-oiling the back axle on a 20.HP car. | ||
| View original record | TO HS. & EP. FROM R. c.c. to CJ. BJ. c.c. to PN. BY. RE. 20.HP. V4256 V4257 Mr. PN. told me that frequently the brakes on this car are spoilt by over oiling the back axle, and suggested a reduction in… | ||
| Scan21 | Carburetter restrictor issues in 20.HP demonstration cars, causing poor control at low and high speeds. | ||
| View original record | ORIGINAL. TO HS. & EP. FROM R. R7/M16. 7. 23. c. to CJ. BJ. c. to PN. BY. RE. 20.HP. DEMONSTRATION CARS. X4545 X4228 VISIT TO WW. BY BJ. AND PN. ON 13/7/23. The blue and grey open cars appear to have… | ||
| Scan22 | Impressions from a visit to test two Goshawk cars, discussing engine performance, potential modifications, and body characteristics. | ||
| View original record | TO CJ. FROM R. c.c. to BJ. PN. c. to HS. CONFIDENTIAL ORIGINAL R1/M16.7.23. X3730 X4219 RE. VISIT OF BJ. AND PN. TO WW. ON 13/7/23. BJ. and PN. brought two Goshawks, and their com- plaints are want of… | ||
| Scan23 | Letter discussing the performance difference between two chassis, one rated at 22.HP and the other at 48.HP. | ||
| View original record | (2) would wish for, and it would be entirely unsuited for his tastes, when propelled by six little 3" cylinders of a non-racing type of engine. I fear I have not yet succeeded in im- pressing Sales of… | ||
| Scan24 | Recommending the replacement of Bendix starter pinions with Bijur ones on 20HP demonstration cars. | ||
| View original record | 2. ORIGINAL. TO HS. &. EP. FROM R. c. to CJ. BJ. c. to PN. BY. R6/M16.7.23 RE. 20.HP. DEMONSTRATION CARS. X 3592 X3560 I noticed on the blue demonstration car we had still the Bendix pinion on the… | ||
| Scan25 | Modifications to the right-hand levers for the Goshawk 11 model. | ||
| View original record | TO BY. FROM DA. s. to GJ. c. to WSR. c. to HS. DA2/M19.7.23. GOSHAWK 11. RIGHT HAND LEVERS. V3528 X4253 We send herewith N.sch. 1430. shewing the arrangement of side levers for use with a revised… | ||
| Scan26 | Suggested modification for Goshawk 11 electrical system instructions regarding battery handling. | ||
| View original record | TO EFC. FROM R. c. to CJ HS. c. to BY. EP. ORIGINAL RE. GOSHAWK 11. ELECTRICAL SYSTEM. We suggest as a modification to the instructions for handling the Goshawk when the battery is either out of… | ||
| Scan27 | Development for the 40/50 oil level indicator assembly. | ||
| View original record | ORIGINAL TO BY. FROM E. c. to GJ. HS. 40/50 - OIL LEVEL INDICATOR. X4235 X9200 We thank you for your scheme No. 492. We had already completed the application of the EAC. oil level indicator, but we… | ||
| Scan28 | Goshawk engine timing, comparing the Goshawk I and Goshawk II models and recommending new camshafts. | ||
| View original record | TO HS. FROM R. c.c. to SJ. ORIGINAL GOSHAWK TIMING. V3942 In reply to your HS1/LG16723., the Goshawk 1. timing if made to the original instructions should be the same as Goshawk 11. since the timing… | ||
| Scan29 | Diagrams and notes on camshaft timing for GII engines. | ||
| View original record | R2/M19/7/23 Diagram 1: IO 4° EC 8° 37° I.C. 46° E.O. 108° (107.75) BETWEEN CAMS Stamp: RECEIVED 28 JUL 1923 Diagram 2: IO 0° E.C. 4° 41° IC 50° EO 112° (111.75) BETWEEN CAMS Both the above camshafts… | ||
| Scan30 | Design of a 40/50 spare wheel carrier and requesting experimental sets be made. | ||
| View original record | TO BY. FROM DA. c. to GJ. c. to WAH. c. to HS. 40/50 - SPARE WHEEL CARRIER. X3633 We send herewith N.sch. 1409., shewing the spare wheel carrier on the side arranged as we believe suitable for all… | ||
| Scan31 | Internal memorandum regarding a delayed chassis delivery (5.G.11) for a Goshawk 11. | ||
| View original record | ORIGINAL TO HS. FROM DA/EV. DA/EV1/M20.7.23. c.c. to LHS. RE. 5. GOSHAWK 11. 43730 In accordance with your HS1/LG2723., we promised Messrs Young & Co., and G. Beaton & Son that they should receive… | ||
| Scan32 | Confirmation of a telegram requesting a decision on the preference for the fan drive. | ||
| View original record | ORIGINAL. CONFIRMATION OF TELEGRAM. WEST WITTERING. 20th. July 1923. ROYCAR. DERBY. X4237 HIVES - WE AWAIT YOUR DECISION FOR PREFERENCE OF FAN DRIVE FROM DYNAMO OR CRANKSHAFT. RECEIVED ROYCE. | ||
| Scan33 | Design and wiring of the Goshawk 11 standby magneto ignition system, comparing drawing LeC. 1744 with scheme No. 491. | ||
| View original record | ORIGINAL. TO BY. FROM E. c. to EJ. HS. E1/M21. 7. 23. x3557 GOSHAWK 11. STANDBY MAGNETO IGNITION. Y4075 We send you herewith drawing No. LeC. 1744., shewing the method of carrying the H.T. wire from… | ||
| Scan34 | Issues with the Goshawk 11 fan mounting, belt irregularity, and potential solutions. | ||
| View original record | TO HS. FROM R. c. to GJ. c. to BY. c. to EP. RECEIVED 23 JUL 1923 RE: GOSHAWK 11. FAN MOUNTING. X4237 X446 -or I see no reason for the fan belt irregularity of which you complain. We have never had… | ||
| Scan35 | The urgent fitting of Lucas RB.65 headlamps to a 20 HP Goshawk chassis. | ||
| View original record | TO HS. FROM DA/EV. c. to BJ. BY. ORIGINAL. DA/EV1/M21.7.23. 20.HP. CHASSIS HEAD LAMPS. X4090 We are sending you a pair of Lucas head-lamps - RB.65 - which we have today received. We think you should… | ||
| Scan36 | Twofold modifications to the Goshawk 11 battery ignition condenser, referencing drawing No. LeC. 1745. | ||
| View original record | TO EY. FROM E. c. to CJ. c. to EFC. c. to HS. c. to EP. ORIGINAL X4430 GOSHAWK 11. - BATTERY IGNITION CONDENSER WITH IMPROVED CONTACT. We send you herewith drawing No. LeC. 1745., shewing the above.… | ||
| Scan37 | Failures and improvements for Goshawk electrical units. | ||
| View original record | COPY. FROM R. ORIGINAL. RL/M26. 7. 23. c. to Col. Bd. c. to Mr. West. c. to Mr. EFC. c. to Mr. WP. RE. GOSHAWK ELECTRICAL UNITS. X4338 There is very little excuse for these failing and depending upon… | ||
| Scan38 | With diagrams proposing the use of friction dampers to reduce torque reaction vibration in the 40/50 and Goshawk models. | ||
| View original record | TO HS. FROM R. ORIGINAL R4/M26.7.23. RE. TORQUE REACTION VIBRATION. X4604 X9550 (crossed out) Your experiments of reducing the reaction vibrations by tightening the front suspension of the 40/50… | ||
| Scan39 | 40/50 Oil Level Indicator and its associated drawing. | ||
| View original record | TO BY. [struck through] FROM E. c. to CJ. [struck through] HS. c. to EP. [struck through] HM. ORIGINAL E2/M27.7.23. 40/50 - OIL LEVEL INDICATOR. X3527 We send you herewith drawing No. LeC.1746 shewing… | ||
| Scan40 | Investigation of a sticking Goshawk 11 starting switch at the request of Mr. Royce. | ||
| View original record | R.R. 238A (100 T) (S H. 159, 11-8-20) G 2800 TO HS. FROM E. ORIGINAL E3/M27. 7. 23. c. to CJ. EP. c. to BY. EFC. X 3915 RE. GOSHAWK 11. STARTING SWITCH. With regard to the reported sticking on of the… | ||
| Scan41 | Investigation into a sticking Goshawk 11 starting switch. | ||
| View original record | TO HS. FROM E. c. to CJ. c. to BY. EFC. ORIGINAL E3/M27. 7. 23. X3915 RE. GOSHAWK 11. STARTING SWITCH. With regard to the reported sticking on of the Goshawk electric starter switch, Mr. Royce would… | ||
| Scan42 | Unavailability of a 40/50 HP car for photography, detailing issues with gearbox silence tests on the 6-EX car. | ||
| View original record | To R. from Hs. ORIGINAL. Hs2/LG2. 7. 23. X2565 X3923 With reference to your telegram asking for a 40/50 HP. car of first-class appearance for photographing purposes on compative hill tests. We replied… | ||
| Scan43 | Potential application of an oil level indicator from the E.A.C. to the standard 40/50 model. | ||
| View original record | E. from Hs. ORIGINAL Hs2/LG7.7.23. OIL LEVEL INDICATOR. X3725 Would it be possible to apply the Oil Level Indicator which we have got out from the E.A.C., to the standard 40/50 ? If it is possible, we… | ||
| Scan44 | Endurance tests on contact breaker rubbing blocks comparing wear on bakelite and grey fibre. | ||
| View original record | To R & K from EFG. c. GJ & PN. c. to EV. EP. DA. EFC4/T9.7.23. X3485 X.4357 - 20 H.P. BATTERY IGNITION - ENDURANCE TESTS OF CONTACT BREAKER RUBBING BLOCK. Under cover of our EFC4/T19.2.23 report,… | ||
| Scan45 | Comparison of wear between continental bakelite and grey fibre in unlubricated conditions. | ||
| View original record | Contd. -2- EFC1/T9.7.23. It appears that the continental bakelite at present standard is the more satisfactory of the two, in spite of the fact that the wear in the unlubricated condition was greater,… | ||
| Scan46 | Endurance test report for a lubricated grey fibre rubbing block. | ||
| View original record | EFC. PB.91. April 27th 1923. ENDURANCE TEST OF LUBRICATED GREY FIBRE RUBBING BLOCK. The above test, which consisted of the equivalent of a 10,000 mile run, is now finished. The cam was given an… | ||
| Scan47 | Continuation page of a report on tests of lubricated and unlubricated grey fibre and bakelite blocks. | ||
| View original record | -2- Contd. point (positive). Tests have now been made with grey fibre blocks first unlubricated, then lubricated, also with continental bakelite block unlubricated. There now remains one further test,… | ||
| Scan48 | The endurance test of a lubricated Continental Bakelite rubbing block. | ||
| View original record | EPC. PB.102. ENDURANCE TEST OF LUBRICATED CONTINENTAL BAKELITE RUBBING BLOCK. The endurance test of the bakelite rubbing block lubricated is now finished. As near as possible the same treatment was… | ||
| Scan49 | Differences in the 20 HP electrical system and proposing a warning system for the battery. | ||
| View original record | To H. from EFC. c. C.J.A.N. c. to M. FM. c. to EP. Ha. ORIGINAL X.4333 - 20 HP. ELECTRICAL SYSTEM. Referring to H/M10.7.23, there is, of course, a difference in addition to those you mention that the… | ||
| Scan50 | Automatic charging systems, earthing suggestions, and a burnt-out distribution box. | ||
| View original record | Contd. -2- switching off the charge, and maintains that wee should have some system which is entirely automatic, though the possibility of obtaining complete automatism, without an undue amount of… | ||
| Scan51 | Capacity-temperature tests performed on a 20 HP Goshawk ignition paper condenser. | ||
| View original record | ORIGINAL To R & E. from EFC. c. CJ. SPM* c. EW. Da. c. EP. c. Mr. Brock. EFC/L/T13.7.23. K.4430 - CAPACITY-TEMPERATURE TESTS OF 20 H.P. PAPER CONDENSER. Please find attached copy of my assistant's… | ||
| Scan52 | Continued explanation of test results for condensers, detailing the effects of temperature on capacity and leakage. | ||
| View original record | Contd. -2- EFCL/T13.7.33. or otherwise to make it clear, that the portions of the curves corresponding to the higher temperatures represent the combined effect of capacity and leakage. If the leakage… | ||
| Scan53 | Results of temperature and capacity tests on condensers. | ||
| View original record | Contd. -2- EFC1/T13.7. 23. (a) Temp. was raised gradually to 80°C (full line curve). (b) Temp. fell to normal overnight. (c) Condensers were again taken up to 80°C (each one starting with a higher… | ||
| Scan54 | Instructions for a temperature test on paper condensers. | ||
| View original record | ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: E.F.C. Order No: PB104 Customer's No: X4430 Temperature Test of Paper Condensers. Six paper condensers, five R.R, and one U.S.A. Bosch, have been subjected to a… | ||
| Scan55 | Instruction sheet detailing a temperature testing procedure for various condensers. | ||
| View original record | RR-238 (300 Bks.) (SF 152. 6-11-18.) MP 197880 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To Order No PB 104 (2) Customer's No. 19 2. Std Goshawk condenser N° 524 3. U.S.A Bosch condenser. (Marked 774) Group… | ||
| Scan56 | Instructions detailing the results of condenser testing, noting permanent capacity increases after heating. | ||
| View original record | RR-238 (300 Bks.) (SF 152. 6-11-18.) MP 197880 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To Order No PB 104 (3) Customer's No. 19 taken resulting in a set of subsidiary curves, which with the main curves,… | ||
| Scan57 | Instruction sheet discussing the relationship between condenser capacity, temperature, and leakage. | ||
| View original record | RR 238 (300 Bks.) (SF 152. 6-11-18.) MP 197880 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To Order No P.B. 104 (4) Customer's No. 19 at about 34°C. Also that the capacities at these two points for each… | ||
| Scan58 | Graph showing the variation of capacity with temperature for different types of paper condensers. | ||
| View original record | VARIATION OF CAPACITY WITH TEMPERATURE OF PAPER CONDENSERS GROUP A CAPACITY (MICRO-FARADS) TEMPERATURE (°C) LEGEND: N°1 EXPL. CONDENSER WITH IMPROVED CONNECTIONS N° 494. N°2 STD CONDENSER N°524. N°3… | ||
| Scan59 | Graph showing the variation of capacity with temperature for Goshawk paper condensers. | ||
| View original record | VARIATION OF CAPACITY WITH TEMPERATURE OF GOSHAWK PAPER CONDENSERS GROUP B Nº4 EXPL. CONDENSER Nº 613 BAKED AT HIGHER TEMPERATURE Nº5 CONDENSER Nº 32 BELOW STD IN CAPACITY Nº6 STD CONDENSER Nº 547.… | ||
| Scan60 | Graph showing the variation of capacity with temperature for Goshawk paper condensers, Group B. | ||
| View original record | VARIATION OF CAPACITY WITH TEMPERATURE OF GOSHAWK PAPER CONDENSERS GROUP B B.2. CAPACITY (M Fd) TEMPERATURE (°C) N°4 N°6 N°5 N°4. CONDENSER N° 613 N°5. " " 32 N°6. " " 547 TEMP. RISING " " FALLING.… | ||
| Scan61 | Fitting difficulties and proposing solutions for the magneto ignition on a 20 HP car. | ||
| View original record | To R. From Hs. c. to CJ. c. to E. c. to Da. c. to EY. ORIGINAL MAGNETO IGNITION FOR 20 HP. CAR. X3551 (crossed out) X4327 We have fitted up a car with the Magneto Drive made to LeC.1724. We are very… | ||
| Scan62 | Design improvement for the magneto connection and bracket. | ||
| View original record | contd:- -2- when the Magneto is not in use, and therefore the control should be disconnected. At present we have a snap connection ball joint on the magneto contact breaker arm but this leaves a short… | ||
| Scan63 | The application of an E.A.C. Oil Level Indicator to the 40/50 HP model. | ||
| View original record | To R. from Hs. ORIGINAL. Hs1/LG14.7.23. OIL LEVEL INDICATOR. X3527 The D.O. have practically completed the scheme of applying the E.A.C. Oil Level Indicator to the 40/50 HP. They will send this on to… | ||
| Scan64 | Comparing Goshawk engine valve timings with different camshafts. | ||
| View original record | E. from Hs. ORIGINAL Hsl/LG16.7.23. V4229 V4238 V3310 V4226 V3942 GOSHAWK TIMING. The results given on the Charts were all taken on Goshawk 1. engine with Goshawk 1. Cams. The average Goshawk 11… | ||
| Scan65 | Performance comparison graph of B.HP vs R.P.M. for the Goshawk II engine, detailing standard and experimental camshafts. | ||
| View original record | GOSHAWK II STANDARD AND EXPERIMENTAL CAMSHAFT. ENGINE B GII 45° VALVE SEATS. BATTERY IGNITION. ENGINE WATER AT 80°C. SILENCER FITTED BOTH CURVES OBTAINED UNDER THE SAME CONDITIONS. B.H.P R.P.M.… | ||
| Scan66 | Performance comparison graph for an Engine 8 Goshawk II using standard and large diameter valves. | ||
| View original record | STANDARD AND LARGE VALVES ENGINE 8 GOSHAWK II B.H.P. R.P.M. TWO CLAUDEL HOBSON HAWK CARBURRETTERS OPEN EXHAUST. BATTERY IGNITION FOR MAXIMUM POWER EXPERIMENTAL CAMSHAFT TIMING I.O. ON T.D.C. I.C. 38°… | ||
| Scan67 | Analysis and testing of dynamo brush spring pressures for a 20 HP engine. | ||
| View original record | To R. E. From EFC. c.c. LJ. c.c. DA. c.c. HY. By/De. c.c. BGL. for Mr. Brock. ORIGINAL EFCG/T17.7.30. X.4333 - 20 H.P. DYNAMO BRUSH SPRING PRESSURES. ************************************* The spring… | ||
| Scan68 | Results and future plans for intermittent and continuous running tests on electrical components. | ||
| View original record | -2- EFC3/T17.7.33. while on the high speed, then stopping again, the whole cycle being performed about three times per minute. Commutation and general performance was about the same on either polarity… | ||
| Scan69 | Standardisation of a carburetter control modification. | ||
| View original record | To R. from Hs. c. to CJ. c. to BJ. c. to Wor. c. to EY. c. to EP. c. to PN. ORIGINAL. EP4/H23.7.23. CARBURETTER CONTROL. Hs1/LG25.7.23. X4228 X4289 A standardisation sheet was sent round on the… | ||
| Scan70 | Cover note for a report on the cooling of a 20 HP car, mentioning a previously left blue-print. | ||
| View original record | E. from Hs. ORIGINAL Hs3/LG27.7.23. RE. COOLING OF 20 HP. CAR. X4240 We attach herewith a report in connection with the above. We left a blue-print with you when we were at W.W. but did not leave… | ||
| Scan71 | Radiator tests conducted on a 20-HP car. | ||
| View original record | COPY. RADIATOR TESTS - 20-HP CAR. These tests were carried out climbing from Macclesfield up to the "Cat and Fiddle" Inn on the 11th. July. There was no wind and the road surface was dry. The air… | ||
| Scan72 | Series of five graphs showing the results of cooling tests on a 20 HP engine. | ||
| View original record | Main Title: COOLING TEST ON 20 H.P. Graph A: Y-Axis: TEMP AT TOP & BOTTOM OF RADIATOR X-Axis: TIME IN MINS Legend: COMPARISON OF SHUTTERS ON SHUTTERS OFF LOUVRES CLOSED, UNDERSHIELD ON Graph B:… | ||