Rolls-Royce Archives
| Identifier | Entry | ||
| img001 | Production strategy, cost, and sales plan for the 'GOSHAWK II' engine. | ||
| View original record | To Gd. from R. Copy to OR. HS. BY. X4219. RE "GOSHAWK II", ETC. Messrs. Wormald and Hives brought the above here. They, and we, are very pleased, design well worth the delay. Feel sure sales and cost… | ||
| img002 | Dynamometer power test results for the Goshawk 11 engine, including general running observations. | ||
| View original record | 1st GTT engine. Dyno Power tests. ORIGINAL THIS DOCUMENT MUST BE KEPT IN THIS OFFICE To R. from Hs. c. to CJ. c. to E. c. to Da. c. to EY. c. to Wor. *GOSHAWK 11* X4219 General running. We have run… | ||
| img003 | Engine test report detailing performance characteristics including compression, detonation, vibration, and valve clearances. | ||
| View original record | Contd. -2- The maximum HP. is practically the same as Goshawk 1. when fitted with the R-R Carburetter. The HP. at low speeds is not quite as good but we think we ought to improve this. Compression.… | ||
| img004 | Cylinder block extension, valve timing with different tappet clearances, and water pump flow rate tests. | ||
| View original record | Contd. -3- Hs1/LG4.8.21. -------------- The extension of the cylinder block and valve mechanism appear to be about .003" more than the tappet rod but in the case of the exhaust valve, this is nearly… | ||
| img005 | Test report on engine oil pump performance, lubrication, and carburation. | ||
| View original record | Contd. -4- Hal/L06.8.21. Oil Pump. Pints per min. Revs. | Flow through engine. | Flow through relief valve. 250 | .8 | 1.1 500 | 1.2 | 2.7 1000 | 1.33 | 5.7 1500 | 1.6 | 8.0 2000 | 2.3 | 10.0 2500 |… | ||
| img006 | Weak clutch unable to hold torque and a quiet, oil-retaining gearbox. | ||
| View original record | Contd. Clutch. The springs in the clutch are too weak to hold the full torque on top gear. The clutch is very free. We have had trouble with the clutch trunnion thrust race. Gear Box. The gears appear… | ||
| img007 | Criticisms on the Goshawk 11 engine regarding the over-elasticity of its cylinder head studs. | ||
| View original record | To R. from Hs. c. to CJ. c. to E. c. to Da. c. to EY. ORIGINAL X4219 CRITICISMS ON GOSHAWK 11. Studs holding cylinder and cylinder head. We feel that the long studs which hold the cylinder head and… | ||
| img008 | Design and manufacturing issues with studs, cylinder water jacket tubes, and countersunk screws. | ||
| View original record | contd. -2- Hs3/LG4. 8. 21. We have tried grooving the top of the stud and dropping on a slotted washer to take all the torsion. This appears to be an improvement but we think it suffers in the other… | ||
| img009 | Recommendations for improvements to the engine casing and flywheel casing, including waterproofing and preventing dropped parts. | ||
| View original record | contd. -3- case. A lot of care has been taken with the experimental sets but they have not been water-tight. We realise that if the thread is slack it will accommodate a certain amount of… | ||
| img010 | Letter discussing criticisms and design aspects of the Goshawk II engine, specifically regarding studs and water jackets. | ||
| View original record | To HS. from R. Copy to CS. " " HY. " " DA. X4219 RE "GOSHAWK II" - (HSS/LG4/8/21) I am very grateful to you for working on "Goshawk II" during the holidays. This is so different from the behaviour of… | ||
| img011 | Technical memo discussing design points for countersunk screws, flywheel casing, clutch trunnion, and spring drive. | ||
| View original record | To HS. from R. -2- R10/G8/8/21 Contd. We might try experimentally brass or copper tubes. (3) RE COUNTERSUNK SCREWS FIXING WATER JACKET COVERS TO CYLINDER. I quite think that screws with flat under the… | ||
| img012 | Design considerations for a spring drive, pipes, oil pump, engine suspension, and carburetor. | ||
| View original record | To HS. from R. -3- (7) RETAINING BOLT FOR SPRING DRIVE. Owing to cost of production it would not pay us to make the bush and stud solid. We will, however, take some precautions to prevent it turning.… | ||
| img013 | Design and features of an oil level indicator, oil filter, inspection cover, and core plugs. | ||
| View original record | To HS. from R. -4- R10/G8/8/21 Contd. (12) OIL LEVEL INDICATOR. Regarding the marking of the level indicator, we agree that 1/4, 1/2, 3/4, and 1 gallon will be more easily understood. Will you kindly… | ||
| img014 | Test runs of the Goshawk 11 engine, detailing issues with the clutch trunnion and concerns about cylinder studs. | ||
| View original record | To R. from Hs. c. to CJ. c. to E. c. to Du. c. to BY. c. to Wor. ORIGINAL X4719 *GOSHAWK 11* ENGINE. Apart from the ordinary test running at various speeds and loads, we have run this engine for 3… | ||
| img015 | Horsepower tests to measure power loss from heating the induction pipe, and progress on swaging cylinder tubes. | ||
| View original record | Contd. -2- it would be very serious. As regards the tubes through the cylinders. Mr. Coverley has made good progress on this job. He has made a tool for swaging these tubes out under a drilling… | ||
| img016 | Cracked exhaust pipe, carburetter flooding, and engine performance with a paraffin mixture. | ||
| View original record | R.R. 365A (100 T(C & S) B. 119. 11-9-16) G. 2600 Contd... stopped down suddenly. The exhaust pipe evidently cooled down much more quickly than the cylinders; the exhaust pipe cracked with a bang. We… | ||
| img017 | The post-test dismantling and examination of a Goshawk 11 engine and a Goshawk 11 universal joint. | ||
| View original record | To R. from Hs. c. to CJ. c. to E. c. to Ha. c. to EY. c. to Wor. ORIGINAL. X4219 RE. GOSHAWK 11 ENGINE. Attached herewith are photographs taken of the Goshawk engine on the Test Bench. We have now… | ||
| img018 | Continuation of a memo regarding an engine oil leak and the use of paper washers as a fix. | ||
| View original record | Contd. -2- hsl/LG15.8.21. at the very high speeds the engine was run, it may have gradually leaked away from that point. We are erecting the joint this time with paper washers and taking every… | ||
| img019 | Comparing tyre sizes (32 x 4½ vs 820 x 120) and their effect on vehicle ground clearance for the 40/50 HP model. | ||
| View original record | Contd. -2- Hs2/LG19.8.21. which means that the car will be .5" higher off the ground if we use the 32 X 4½ instead of the 820 X 120. 32 X 4½ in the same size rim as we are using on the present 40/50… | ||
| img020 | The Goshawk 11 engine, detailing further testing on pistons, clutch performance, and wheel/tyre specifications. | ||
| View original record | To R. from Hs. c. to CJ. c. to E. c. to De. c. to BY. c. to Wor. ORIGINAL COPY OF REPORT BY Mr.T.D.W-ARIS & F.C. Hs2/LG19.8.21. X4219 RE. GOSHAWK ENGINE. We have run Goshawk 11. engine a further 17… | ||
| img021 | Use of 20° angle teeth versus standard teeth in the Goshawk II gear box. | ||
| View original record | To BY. from R. Copy to Derby. " " " " HS. ORIGINAL. R11/CS/S./21 X4242 RE "GOSHAWK II" GEAR BOX. I cannot understand who is the author of using 20° angle teeth in the gear box of "Goshawk II". We do… | ||
| img022 | Test report on the Goshawk 11 chassis, detailing noise issues and proposed modifications to reduce them. | ||
| View original record | R. from Hs. c. to CJ. c. to E. c. to Ds. c. to EY. c. to EP. c. to GBr. ORIGINAL. GOSHAWK 11. X4219 We have run Goshawk 11. chassis about 150 miles. During this last run the chassis was fitted with… | ||
| img023 | Axle noise, crankshaft vibration, and clutch issues including plate buckling and disengagement. | ||
| View original record | Contd. -2- This will avoid us holding up the chassis for quietening the axle. The 14t angle gears are also in hand. There is nothing in the noise which we consider cannot be overcome without any… | ||
| img024 | Advantages of a Mack Truck clutch design and a proposal for a new clutch fabric. | ||
| View original record | Contd. In U.S.A. I was shown a clutch on a Mack Truck (which has a similar reputation to the Leyland in England). They claim that they obtain very much better results by using the fabric as the driven… | ||
| img025 | With a diagram, proposing a 'silencer within a silencer' design to reduce a tinny noise in the exhaust. | ||
| View original record | To HS. from R. Copy to CJ ORIGINAL 2. R3/G7/9/21. X3436 X RE EXHAUST SILENCER. With reference to the tinny noise in the exhaust, this must be due to the thin exhaust pipes, which possibly may require… | ||
| img026 | Query regarding necessary equipment for dynamos and motors from outside manufacturers for the 'Goshawk II'. | ||
| View original record | To R & E. from EFC. c. to CJ. c. to E. c. to Da. c. to Da/Thr. c. to By. c. to By/WER. ORIGINAL X.4359E. DYNAMOS & MOTORS FOR "GOSHAWK II". X.4342E. Please find attached table showing the present… | ||
| img027 | The features of the non-trembler battery ignition system for the Goshawk II engine. | ||
| View original record | To Mr. Walker, from R. Copy to Mr. " " EPC. " " HS. ORIGINAL X.3485 RE CATALOGUE AND INSTRUCTION BOOK FOR THE ELECTRICAL X.4403 AND IGNITION SYSTEM FOR "GOSHAWK II". The chief features of our… | ||
| img028 | Continued memo from R. to Mr. Walker discussing features of an engine ignition system. | ||
| View original record | To Mr. Walker, from R. -2- R6/G29/8/21 Contd. of providing a spark gap in front of the plug, and so demanding less perfect insulation of the ignition plug. (5) It is fitted with a R.R. special feature… | ||
| img029 | Confirmation of a telegram regarding a meeting and gears for a Goshawk two gear box. | ||
| View original record | CONFIRMATION OF TELEGRAM TELEPHONED TO CHICHESTER. ORIGINAL ROYCAR DERBY. X4299 X4219 ROWLEDGE IT WILL BE QUITE CONVENIENT FOR YOU TO COME FRIDAY STOP HIVES TRY FOURTEEN AND HALF TOOTH ANGLE GEARS ON… | ||
| img030 | Status report on dynamos and starter motors from various suppliers for the 'Goshawk II' project. | ||
| View original record | PRESENT POSITION OF DYNAMOS AND MOTOR OF VARIOUS MAKES FOR "GOSHAWK II". Make: Brolt. Dynamo: Messrs. Brolt have submitted prints of performances of standard machines which are at present awaiting… | ||
| img031 | Design and features of the 'Goshawk II' open body. | ||
| View original record | To IHS. from R. Copy to Ser H... P... W.H. HS. ORIGINAL R1/G19/7/21 RE OPEN BODY FOR "GOSHAWK II". X3730 -X180 Apparently we have got the dimensions increased in size where we desired, viz. the… | ||
| img032 | The lack of an oil filler plug and the method for checking oil level on the Goshawk II gearbox. | ||
| View original record | To R. from Hs. c. to CJ. c. to E. c. to Ds. c. to BY. X4247 RE. GOSHAWK II - GEAR BOX. There is no Oil Filler Plug instructed for the Goshawk II Gear box. There is a plug on the top of the gear box… | ||
| img033 | The first test run of the Goshawk 11 engine and gearbox units. | ||
| View original record | 1st ENGINE - 1st RUN 22-7-21 To R. from Hs. c. to C.J. c. to H. c. to Da. ORIGINAL Hal/LG22.7.21. X4219 X4247 "GOSHAWK 11" - ENGINE AND GEAR BOX UNITS. We have had the above engine running on the Test… | ||
| img034 | Initial test bench report on the Goshawk 11 engine and its gear units. | ||
| View original record | To R. from Hs. c. to CJ. c. to E. c. to Da. ORIGINAL Hsl/LG22.7.21. X4219 X4247 BOX "GOSHAWK 11" - ENGINE AND GEAR UNITS. We have had the above engine running on the Test Bench. The first impression… | ||
| img035 | The testing of the second Goshawk II engine and gearbox unit, detailing oil leak issues. | ||
| View original record | 2nd G11 ENGINE, BUILT ORIGINAL To R. from Hs. c. to C.J. c. to E. c. to EX. c. to Wor. X4219 RE. GOSHAWK II. ENGINE. We have now received the second engine and gear box unit for test. It is intended… | ||
| img036 | The performance and running costs of straight-sided cord tyres following post-war complaints. | ||
| View original record | To O.I. from R. Copy to SA. " " MAG " " HB. " " R.R. of America Inc. (For the attention of C.J.) ORIGINAL R10/G22/6/21. 4 X4056 (crossed out) RE STRAIGHT-SIDED CORD TYRES. X4261 X4262 Regarding… | ||
| img037 | Evolution of suspension design, comparing spring types and the necessity of increased damping friction due to changes in tyre construction. | ||
| View original record | To C.J. from R. R10/C22/6/21 Contd. of cord construction calls for considerably increased damping friction of the axles. It may be probable that we shall be forced into the use of shock dampers in… | ||
| img038 | Universal adoption of straight-sided cord tyres and their performance on the 'Goshawk' experimental car. | ||
| View original record | Copy to Mr. from R. Copy to Mr. [REDACTED] Mr. [REDACTED] Mr. [REDACTED] H.S. Rolls-Royce of America Inc. (For the attention of..) Handwritten notes: Top right: R9/G22/6/21 Top right, below reference:… | ||
| img039 | Conveying Mr. Royce's request for particulars and expressing concerns about the Goshawk II dynamo and motor project. | ||
| View original record | To EFC. from E. E6/G23/6/21. [Handwritten above 'ORIGINAL': Illegible shorthand] [Stamp: ORIGINAL] X.4384 . X.4383. X4342 . X 4359. RE "GOSHAWK II" DYNAMO AND MOTOR. [Handwritten: 977] Would you… | ||
| img040 | Continued memo regarding a modification to prevent oil soak-through, and details on a suitable Autovac Tank. | ||
| View original record | Third point was chassis that Contd. -2- had not come out & pump wire had got loose and 8 p RGA4/L822. 8.21. ************ trying a piece of sheet metal rivetted to the cover so that the oil cannot… | ||
| img041 | Road test report on the 'Goshawk' 11 chassis (X4219), comparing its performance to the 40/50 HP model. | ||
| View original record | G II 2nd Engine 1st Chassis - Road test report To R. from Hs. c. to C.J. c. to K. c. to D. c. to BY. c. to Wor. c. to RF. ORIGINAL Hs2/LG29.8.21. 'GOSHAWK' 11. X4219 We have run this chassis about 100… | ||
| img042 | Test report on a car chassis, detailing issues with the gearbox, rear axle, universal joint, and carburettor, and plans for further review. | ||
| View original record | contd. -2- Hs2/LG29.8.21. ============ have been instructed and are in the process of being made. Gear Box. The gears were not good for silence. We noticed that the gears on this car have been… | ||
| img043 | Test bench finding on the cause of oil leakage from a universal joint. | ||
| View original record | Contd. -3- With reference to the oil leakage from the universal joint. We have proved on the Test Bench that if we remove the aluminium dust cover and run the Joint we get no oil leakage. It appears… | ||
| img044 | The Goshawk 11 chassis, detailing issues with the dashboard, controls, and various fittings, with suggestions for improvement. | ||
| View original record | R.R. 986a (100 T) (S.H 150, 11-8-20) G. 9500 To R. from Hs. c. to CJ. c. to K. c. to Da. c. to Wor. c. to EP. Hal/LC30.8.21. "GOSHAWK 11" X4219 Dashboard. The dashboard instructed for this chassis is… | ||
| img045 | Request to the Experimental Department to create a dummy wooden model armature for the 'Goshawk II' motor and dynamo. | ||
| View original record | TO B.Y. from DA/T. copy to H.P. E.P.C. ORIGINAL RECEIVED AUG 12 1921 DA/T1/G10/8/21 X.1640x8 X.4383 X.4384 RE "GOSHAWK II" MOTOR AND DYNAMO. Would you please issue the necessary information to the… | ||
| img046 | The specifications and wiring for 'Goshawk II' lamps. | ||
| View original record | TO FH. FROM R. Copy to Mr. * EPC. Mr Hives. Mr Wormald. Mr Halden. Mr Whacker. ORIGINAL X.4090. RE LAMPS FOR "GOSHAWK II". We seem to have got the "Goshawk" lamps now which we require from the Lucas,… | ||
| img047 | From 'E.' to 'H.S.' responding to a list of points requiring attention on the 'Goshawk II' engine. | ||
| View original record | To H.S. from E. ORIGINAL EL/G26/8/21 x4219 RE "GOSHAWK II" ENGINE. Many thanks for your list of points on "Goshawk II" engine which require attention. It is most useful to us, and I return herewith a… | ||
| img049 | List of complaints regarding a vehicle chassis and other components, with corresponding handwritten remarks and actions. | ||
| View original record | COMPLAINTS Lubricators all over chassis should be modified to take "Enots" ¼" gas lubricator. 2 BA. Bolts in front cross member not strong enough. All over the chassis there are instructed expensive… | ||
| img050 | Test report on the Goshawk 11 rear brakes, detailing dynamometer performance, failure of aluminium shoes, and material comparison. | ||
| View original record | F.R. 235a (100 T) (Spg?) 10-12-20 ?? Ms. c. to CJ. c. to R. c. to Da. c. to BY. c. to KP. c. to Wor. ORIGINAL. hsl/LCS.10.21. Goshawk 11. X1257 X4253 X4259 X4282 REAR BRAKES. We have tested the rear… | ||
| img051 | Testing a noisy Hyatt Roller Bearing and the policy of modifying parts based on the practice of the 40/50 HP model. | ||
| View original record | R.R. 235a (100 T) (S.H. 798. 10-12-39) G. 2948 Contd. -2- X4282 Hal/LGS.10.21. ********** Hyatt Roller Bearing. We tested the Hyatt Roller Bearing in the box by itself driving the shafts by means of a… | ||
| img052 | Cracked induction pipe on Goshawk 11 and performance improvements after repair. | ||
| View original record | to R. from Hs. c. to CJ. c. to E. c. to Da. c. to BY. c. to Wor. c. to EP. ORIGINAL Hs/LG1/8.9.21. GOSHAWK 11. X4219 On examining Goshawk 11. after the run to Chichester and back, we found that the… | ||
| img053 | Improvements and issues with the Goshawk II chassis, focusing on the direct drive clutch and clutch plate. | ||
| View original record | To HS. from R. Copy to CJ. " " WOK. " " DU. " " PN. Handwritten note: Kindly note this was the c. for wor in W.O envelope today D not 10/21 RE "GOSHAWK II". X4219 X4244 ORIGINAL RB/C14/9/21. 3. With… | ||
| img054 | Alternative clutch designs, materials, and testing suggestions. | ||
| View original record | To HS. from R. -2- R5/G14/9/21 Contd. point out that for a single plate clutch it is imperative to use levers on the revolving clutch, otherwise the thrust for the operation would be too heavy and… | ||
| img055 | Modifications to the 'Goshawk II' carburettor and addressing a cracked induction pipe. | ||
| View original record | To HS. from R. Copy to C.J. " W.O. " P.T. ORIGINAL SEP 12 1921 R10/G14/9/21. RE "GOSHAWK II". X4219 I was pleased to hear that the poor slow running could be accounted for by the cracked induction… | ||
| img056 | Internal memorandum discussing component changes and design updates for a vehicle. | ||
| View original record | To HS. from R. -2- R10/G14/9/21 Contd. speed of lift, which seems necessary owing to the induction pipe carrying less petrol. You will remember that the carburettor seemed to run off extra ordinarily… | ||
| img057 | Modifications to the springs, exhaust system, fan, and undershield of American cars. | ||
| View original record | To HS. from R. -3- R10/G14/9/21 Contd. American cars. You will remember that there are detachable spring fittings for the front end of the rear spring so as to permit this being taken down without… | ||
| img058 | Delco starter switch, its carbon and copper contacts, and a recommendation for an alternative for the Goshawk II. | ||
| View original record | To R. from Hs. c. to CJ. c. to E. c. to DA. c. to BY. c. to EWT. for R.R.Inc. ORIGINAL HSJ/LG15.9.21. X805 DELCO STARTER SWITCH. x3915 We are sending to Mr. Royce the Starter Switch off the Haxson… | ||
| img059 | From E. to H.S. conveying Mr. Royce's query on evidence for Delco starter switch failures. | ||
| View original record | REF Hs/LG 15.9.21 3 E1/G1/10/21 TO HS. from E. Copy to CJ. ORIGINAL X.805 RE DELCO STARTER SWITCH. With reference to your report HS1/LG15/9/21, Mr. Royce would like to know what actual evidence have… | ||
| img060 | The failure of a carbon copper type starter switch and the recommendation for a more reliable plain switch. | ||
| View original record | E. from Hs. ORIGINAL RH Hs1/LG 15-9-21 HS2/LG4.10.21. XS05 X3757 CARBON COPPER TYPE STARTER SWITCH. The carbon copper starter switch which has failed when in use by us has been the one fitted to 5.EX… | ||
| img061 | Experiments on the Goshawk 11 crankshaft friction damper to reduce engine noise and vibration. | ||
| View original record | To R. from Hs. c. to CJ. c. to E. c. to EY. c. to Da. — c. to EP. GOSHAWK 11. X4219 We have carried out several experiments with different adjustments of the friction damper on Goshawk 11. crankshaft.… | ||
| img062 | Letter discussing the state of drawings for the 'Goshawk II' control mechanism. | ||
| View original record | To Dr. from E. Copy to C.L. HSW ORIGINAL XL4234 RE "GOSHAWK II" CONTROL MECHANISM. We send you herewith drawings Lec.1451 and Lec.1452 shewing the general arrangement of the control mechanism. These… | ||
| img063 | Technical memorandum detailing tests and proposed modifications for the Goshawk 11 engine components. | ||
| View original record | To R. from Hs. c. to CJ. c. to E. c. to Ds. c. to BY. c. to RP. c. to WGT. ORIGINAL X4219 GOSHAWK 11. Oil Pump. We have fitted to a Goshawk 11, Oil Pump & Relief Valve off a 40/50 H.P. Oil Pump. We… | ||
| img064 | Issues with jack pads, brake drums, and induction/exhaust pipes for the Coshamk 11 (X4219). | ||
| View original record | To R. From Hs. c. to CJ. c. to E. c. to Da. c. to EY. c. to EP. c. to Wox. ORIGINAL Hs2/LC27.9.21. COSHAMK 11. X4219 JACK PADS. The pads formed on the front axle forging for the purpose of jacking up… | ||
| img065 | Investigation into a roaring noise from the Goshawk II engine's induction system by comparing it with a 40/50 HP chassis. | ||
| View original record | 20 & 40/50 Not a fair comparison ORIGINAL! To R. from Hs. c. to CJ. c. to E. c. to Dn. c. to BY. c. to Wor. c. to EP. X4219 X2566 "GOSHAWK II". Now that we have silenced the exhaust considerably and… | ||
| img066 | Report comparing the Goshawk 11 car to the 40/50 model on gearbox noise and ride comfort, while also considering market competitors. | ||
| View original record | Contd. -2- HS2/LGSD.9.21. ------------------ arrangements so that we can motor the engine round to enable us to find the cause and the best means of overcoming it. Gear Box Silence. We have made… | ||
| img067 | Responding to a telegram about the required Slipper Wheel diameter for the Goshawk 11, pending tests with heavier cast iron pistons. | ||
| View original record | R.R. 25m (100) TS.H [illegible] ORIGINAL X4219 X4244 Hsl/LG1.10.21. GOSHAWK 11. With reference to your telegram asking whether 8.15" diameter Slipper would be large enough for Goshawk 11. At present… | ||
| img068 | Dispatching drawing Lec.1458 showing the spring drive, slipper flywheel, and temporary wheelcase for the Goshawk II engine. | ||
| View original record | To D.A. from E. Copy to C.J. " " HOR. " " HS. " " HY. ORIGINAL E2/G5/10/21. 3 X4244 X4222 RE "GOSHAWK II" - SPRING DRIVE ETC. We send you herewith drawing Lec.1458 shewing the spring drive and… | ||
| img069 | Investigation into the cause of a 'power roar' from the Goshawk 11 induction system. | ||
| View original record | To R. from Hs. c. to CJ. c. to E. c. to Da. c. to EY. c. to KP. c. to Wor. ORIGINAL hs2/LGS.10.21. GOSHAWK 11, INDUCTION SYSTEM. - POWER 'ROAR' With reference to the roar we get from the induction… | ||
| img070 | Issues and recommendations for a vehicle's clutch, petrol tap, wiring, and rear axle oil filler. | ||
| View original record | R.M. 325a (100 T) S.M. 788. 10-12-20. O 2147 To R. from Hs. c. to CJ. c. to E. c. to Ds. c. to BY. c. to EP. c. to Wor. ORIGINAL HS3/LCS.10.21. ---------------- GOSHAWK 11. X4219 CLUTCH. Machining… | ||
| img071 | On design improvements, covering filler accessibility, adding a rear valance, and universal joint lubrication issues. | ||
| View original record | contd:- -2- HsS/LGB.10.21. ============= We consider that there is room on this car for a filler low down which will be reasonably accessible. VALANCE. We consider it is necessary that some kind of… | ||
| img072 | The Goshawk 11 carburetter's slow running issues and the advantages of a piston-type throttle. | ||
| View original record | E. from Hs. ORIGINAL. Hs5/LCS.10.21. GOSHAWK 11. CARBURETTER. X4228 With reference to your telegram asking whether the slow running with the Goshawk 11. carburetter is sufficiently good on the… | ||
| img073 | Modified induction pipe design (Lec.1459) for the Goshawk II engine. | ||
| View original record | To DH. from E. Copy to Col. [illegible] " HS" ✔ " JHH" ✔ ORIGINAL 2. X43227 RE "GOSHAWK II" INDUCTION PIPE. We send you herewith drawing Lec.1459 shewing a modified induction pipe for the "Goshawk II"… | ||
| img074 | The challenges of fitting rear shock dampers and the development of a new design for the 'Goshawk II' experimental chassis. | ||
| View original record | To F.M. from R. Copy to C.J. HS. ORIGINAL R4/G8/10/21. RE SHOCK DAMPERS. X3461 / X4329 We have always fitted these fairly successfully to the front of the 40/50 H.P. chassis. Much difficulty has,… | ||
| img075 | Investigation into the cause of a roaring noise in the Goshawk engine's induction system. | ||
| View original record | To R. from Hs. c. to C.J. c. to E. c. to Ds. c. to EY. c. to EP. c. to Wcr. HS4/LG/10.10.21. ORIGINAL X4219 X4227 GOSHAWK 11. With reference to your telegram of the 7th. inst. We have carried out… | ||
| img076 | Gearbox, steering, and induction roar tests. | ||
| View original record | INDUCTION ROAR Ref ORIGINAL L6 10-10-21 To R. from Hs. c. to CJ. c. to OL. c. to Da. c. to HY. c. to Wor. c. to EP. hs3/LG13.10.21. CORHARK 11 X4219 GEAR BOX. We have had the long retaining bolt which… | ||
| img077 | Troubleshooting issues with a Lucas Starter Motor's Bendix Pinion failing to disengage on a Goshawk 11 engine. | ||
| View original record | ORIGINAL GOSHAWK 11. X4219 [crossed out] X4342 [handwritten] STARTER MOTOR. We have fitted the Lucas Starter Motor to the engine with the R-R Bendix Pinion. We are having difficulty in getting the… | ||
| img078 | Goshawk 11 engine issues, specifically induction roar and starter motor pinion engagement. | ||
| View original record | To H. From Hs. C. to A.F. C. to F. C. to W. C. to HY. C. to WOR. ORIGINAL. GOSHAWK 11. Hs2/LG14.10.21. X4327 INDUCTION ROAR. We are disappointed with the improvement made by altering a complete set of… | ||
| img079 | Proposed alterations to the 'GOSHAWK II' carburettor, including the addition of a silencer and changes to the controls. | ||
| View original record | To HS. from R. Copy to C.J. " " MOR. " " BY. " " DA. [STAMP: RECEIVED OCT 13 F.C.] [STAMP: ORIGINAL] R5/G11/10/21. RE "GOSHAWK II" CARBURETTOR. X4228 We are altering the form of the carburettor… | ||
| img080 | From R. to H.S. regarding the hope for a simpler scheme. | ||
| View original record | To HS. from R. -2- R5/G11/10/21 Contd. the hope of getting a simpler scheme which will do all the things now thought to be desirable. R. | ||
| img081 | Brake casting material failures and potential alternatives following a test. | ||
| View original record | To HS. from R. Copy to CE. " " DJ. " " DA. " " WOR. X4259 XL253 STAMP: FC ORIGINAL OCT 11 1921 STAMP: RECEIVED RE "GOSHEN II" BRAKES. We are pleased to hear you have made satisfactory tests of the… | ||
| img082 | Selection of material for 'Goshawk II' frames. | ||
| View original record | To HS. from R. Copy to CU. " " WOR. " " WD. " " BY. " " DA. [STAMP: ORIGINAL] [STAMP: RECEIVED OCT 13 1921] X4260 RE "GOSHAWK II" FRAMES. These frames should be on order, but I am not clear yet that… | ||
| img083 | The Goshawk II's electrical equipment, discussing dynamo options and a proposed oil-immersed starter switch. | ||
| View original record | To FFC.) from R. " HS.) Copy to CJ. " WOR. [Stamp] ORIGINAL R2/G13/10/21. 4 X.4359. RE "GOSHAWK II" ELECTRICAL EQUIPMENT. Regarding the lighting equipment, we notice that you have condemned the… | ||
| img084 | Modifications to the Goshawk II carburettor scheme based on Mr. Royce's instructions. | ||
| View original record | To DA, from E. Copy to EH. " WGR. " HS. ORIGINAL RE "GOSHAWK II" CARBURETTOR. X4228 In accordance with Mr. Royce's instructions, we send you herewith an advance blue print of the scheme showing the… | ||
| img085 | Technical memorandum regarding the Goshawk II engine, discussing the gearbox, crankshaft damper, and the use of aluminium pistons. | ||
| View original record | To HS. from R. Copy to Sy. " " WOR. " " DA. " " BY. ORIGINAL RE "GOSHAWK II". X4219 GEAR BOX. X4247 As regards the noisy Hyatt roller bearing on the gear box, we are pleased to hear that you hope to… | ||
| img086 | Radiator appearance, clutch shudder, and starter motor. | ||
| View original record | To HS. from R. -2- R9/G17/10/21 Contd. RADIATOR. X4240 Regarding the radiator, I think generally we are very pleased with the appearance of this, but I fancy (if it could possibly be accomplished)… | ||
| img087 | From R. to H.S. discussing the pitch of threads and options for making a drive more silent. | ||
| View original record | To HS. from R. -3- R9/G17/10/21 Contd. the pitch or angle of the threads. The drawing shews what was possibly two or four start, but not a single start. We are pleased this is now all right. You do… | ||
| img088 | Failures observed during a bump test on a Goshawk 11 chassis, specifically concerning the front springs, spring clips, and a steering lever. | ||
| View original record | To R. Fromin. c. to SJ. c. to S. c. to AF. c. to LI. c. to Hr. c. to WCr. ORIGINAL HSB/LGSd.10.31. BUMPER TEST ON GOSHAWK 11. x4219 We have running the front wheels of Goshawk 11. chassis on the Bump… | ||
| img089 | Design issues and requirements for the Goshawk 11 chassis and components. | ||
| View original record | To R. from Hs. c. to CJ. c. to K. c. to Ds. c. to BY. c. to EF. c. to Wor. ORIGINAL Hs1/LG26.10.21. GOSHAWK 11. *X4219.* VALVE ROCKER. *(Designs urgently required from W.W.)* At present we are using… | ||
| img090 | Recommendation to have designs available for fitting wire wheels, noting this may require serious alterations to the front axle or pivots. | ||
| View original record | Contd. -2- Hsl/L626.10.21. ***************** wheel to the Michelin Disc Wheel. We ought to have designs in hand in order to be able to fit wire wheels if necessary at an extra cost. As the fitting of… | ||
| img091 | Potential failure in the Goshawk 11 gearbox due to impractical 2.BA bolts. | ||
| View original record | To R. from Hs. c. to CJ. c. to E. c. to Dn. c. to BY. c. to Wor. c. to EP. ORIGINAL Hs4/LG26.10.21. X4247 GOSHAWK 11. X4219 GEAR BOX. We have had one of the long 2.BA bolts which are used to retain… | ||
| img092 | Cause of intake noise in the Goshawk II engine and proposing modifications to resolve it. | ||
| View original record | To HS. from R. Copy to CJ. " " WOR. " " DY. " " EA. " " DA. " " HY. RE "GOSHAWK II". X4219 X3481 It occurred to me that the noise of the intake might possibly be due to the whirling of the air within… | ||
| img093 | Engine vibration, balance, and improvements to various components including pistons, ignition, brakes, and carburettor. | ||
| View original record | To HS. from R. -2- R17/G27/10/21 Contd. on piece by piece to find out any parts that set up a vibration, then when complete make the engine fire and run at full power for all the speeds. On the… | ||
| img094 | Alterations to the ignition advance specifications for the Goshawk II engine. | ||
| View original record | To D.A. From E. Copy to C.C. BY [illegible] X.3485 HS. [illegible] X.3949 ORIGINAL 2 4 E8/G28/10/21. RE "GOSHAWK II" BATTERY IGNITION. In our drawing Lec.1432 of the "Goshawk II" battery ignition, it… | ||
| img095 | Parts failures following a 20-hour bumper rig test on the Goshawk 11 chassis. | ||
| View original record | To R. from Hs. c. to CJ. c. to E. c. to Da. c. to HY. c. to RP. c. to Wor. ORIGINAL Hs3/LG26.10.21. X4219 BUMPER TEST ON GOSHAWK 11. We have completed 20 hours running with the front of the Goshawk… | ||
| img096 | Summary table of a bumper test on a Goshawk II chassis, detailing component failure times in hours. | ||
| View original record | R.R. 224A (100 T) (S H. 798. 10-12-20) G. 1947 26.10.21. BUMPER TEST ON GOSHAWK II, CHASSIS. Unit. | Total number of hours run before failure. Rear spring clip on offside front spring. | 7 1/2 hours.… | ||
| img097 | Design of the Bendix Pinion, comparing its bearing and thrust design to American cars. | ||
| View original record | To R. from Hs. c. to CJ. c. to H. c. to Da. c. to BY. c. to EF. c. to Wor. c. to Hy. ORIGINAL Hs1/L.028.10.21. GOSLANK 11. X4219 X1692 BENDIX PINION. We attached to Mr. Royce's copy of this memo, a… | ||
| img098 | Modifications to the Goshawk II silencer for carburettor and control gear. | ||
| View original record | To DA. from E. Copy to Cdv ORIGINAL. RE "GOSHAWK II" SILENCER FOR CARBURETTOR AND MODIFIED CONTROL GEAR. X4238 X4228 X4239 We send you herewith the original of Lec.1467, of which you have already had… | ||
| img099 | Viability, cost, and testing of fitting Hartford shock absorbers to overcome complaints about thick leaf springs. | ||
| View original record | R.R. 983A (40 T) S.H. 982, 19-3-21) G 29 8 10 M from Hs. c. to C.J. c. to H. c. to K. c. to S. c. to BY. c. to KF. ORIGINAL HeS/LGS.1.10.21. X2628 SHOCK ABSORBERS. X 4329 X4426 In order to overcome… | ||
| img100 | Considering alternative shock absorbers for the Goshawk model. | ||
| View original record | Contd:- -2- HaS/LG.31.10.21. ************ We suggest that we should consider these shockabsorbers as an alternative on the Goshawk. Attached to Mr. Royce's copy of this memo. is a blue print showing… | ||