Rolls-Royce Archives
| Identifier | Entry | ||
| 04-page001 | Acceleration and expanding carburettor tests at Brooklands. | ||
| View original record | X7080 Morning. Copy for Brooklands File. X788 13.7.32. 22-EX. Acceleration tests carried out with 7 x 20 tyres fitted, over the half mile, with these tyres on, cut-out closed. At Brooklands. 7 x 20"… | ||
| 04-page002 | Performance testing data from Brooklands, including lap times, speeds, and acceleration with different tyre configurations. | ||
| View original record | Afternoon. 22-EX. 13.7.32. AT BROOKLANDS. S.U. Carb. Air Temp. 19°C. M.P.H‡ Cut-out closed Lap. 118.4secs 84.13 7 x 21 tyres Cut out open Lap. 110 secs. 90.55 "Repeat" Cut-out open Lap. 119 secs.… | ||
| 04-page003 | Performance and acceleration test results at Brooklands using a standard carburettor. | ||
| View original record | 22-EX. 14.7.32. At Brooklands. Air Temp. 24.0 C. Standard carb. M.P.H. 7 x 21 tyres. Cut-out closed lap. 123 secs 80.98 " " Open Lap. 117.4 " 84.84 Cut-out closed 1/2 mile 22secs 81.92 " " Open 1/2… | ||
| 04-page004 | Valve timing, tappet clearance, valve lift, and tyre specifications for the 22-EX model. | ||
| View original record | 22-EX Valve Timing. .020" Tappet Clearance. I.O. .35" PTDC 2.60 E.O. 6.75" BBDC 50.20 I.C. 7.2" PBDC 53.60 E.C. 1.25" PTDC 9.40 Inlet valve lift = .451 + .005 clearance Exhaust " " = .450 + .009 " 7 x… | ||
| 04-page005 | Development of a Phase II semi-expanding carburetter and an accompanying blueprint. | ||
| View original record | To-BY. C. Wor. C. Hs. RECEIVED 1932 JUL 19 X7080 E/JNR.2./HP.14.7.32. Semi-expanding Carburetter - Ph.II. ----------------------------------- We send you herewith a blueprint LeC.3137. This… | ||
| 04-page006 | Mixture control of a semi-automatic carburetter. | ||
| View original record | To R. From Hs. c. to W. H.R. c. to E. Pe. c. to Hdy. Sp. SEMI AUTOMATIC CARBURETTER. Had we use our semi-automatic carburetter we lose an effective mixture control as we knew it with the present… | ||
| 04-page007 | Necessary modification to the jet feed of a Phantom II Semi-Expanding Carburetter. | ||
| View original record | To BY. from E. c. Hs. c. RHC. X7080. E.5/HP.19.7.32. Phantom II Semi-Expanding Carburetter. We send you herewith drawing LeC.3154 showing a modification we wish to make to the scheme of Jet Feed… | ||
| 04-page008 | Requesting an update on when new type carburetters for a Phantom II car will be ready for fitting. | ||
| View original record | x7080 To Hs. from Sg. re New Type Carburetters. P.II. Referring to the discussion at the conference last week, would you please let me know when you would be ready to fit one to 58-GN and to LHS's… | ||
| 04-page009 | New larger carburettors for the Phantom II model following tests at Brooklands. | ||
| View original record | To Sg. From Hs. c. to Worl X7080. Hs.5/MJ.22.7.32. New Type Phantom ll Carburetters. Sg.2/E20.7.32. You will remeber that it has been pointed out that the carburetters on Phantom ll are not large… | ||
| 04-page010 | Car performance test results comparing a semi-expanding carburetter against standard and S.U. models at Brooklands. | ||
| View original record | 87080. To R. From Hs/Rm. c.c. to Sg. For. c.c. to E. Da. c.c. to By. Ref: Hs/Rm.1/WJ.23.7.32. x788 CAR PERFORMANCE. SEMI EXPANDING CARBURETTER. BROOKLANDS TESTS. We have now completed a series of… | ||
| 04-page011 | Brooklands tests comparing different induction systems, including open exhaust, cut-out, and a long-type silencer. | ||
| View original record | -2- BROOKLANDS TESTS. Prior to these tests we took a series of three tests on four types of induction system consisting of open exhaust C.O. open and complete silencer, shown in curves Rm.P.53/54/58.… | ||
| 04-page012 | Engine performance test results, including speeds achieved with different exhaust and silencer configurations. | ||
| View original record | -3- of increased power output. It will be noted that under these conditions which is the state in which all except Continental type cars are now run, the difference between the standard and… | ||
| 04-page013 | Comparison of large 6-cylinder engine performance against proposed 12 and 18-cylinder units following a visit to the U.S.A. | ||
| View original record | -4- Until we went to the U.S.A. this year, we felt that the big 6 cyl. still had a future against the 12 and 16 cyls. for performance in the large car class. As we pointed out on returning, we are now… | ||
| 04-page014 | Taxation difficulties and market justification for a 12-cylinder power unit for the Phantom II model. | ||
| View original record | -5- Ha/Rm.1/MJ.23.7.32. Cont to enable everyone to realise that it is no use quoting such cars against us unless it is felt that we can put up with the taxation difficulties of 12cyl. power units, and… | ||
| 04-page015 | Data sheet detailing mean lap speeds achieved with various carburetor and silencer configurations. | ||
| View original record | SHEET (1). DUNLOP RACING TYRES. 6.75 x 21" Tyres. Rolling Circumference 107" at 50 lbs/sq.in. 22-EX. 11 x 41 Axle. 114° Camshaft. Car Weight 50.5 Cwt. Mean Lap Speed. Condition of Car. C.O. Open. C.O.… | ||
| 04-page016 | Performance data sheet comparing mean lap speeds with different carburettor configurations. | ||
| View original record | SHEET (2). STANDARD TYRES. 7" x 20" ROLLING CIRCUMFERENCE 104.25" at 50 lbs/sq.in. 22-SK. 11 x 41 Axle. 114° Camshaft. Car Weight 50.5 cwt. Condition of Car. Mean Lap Speed. C.O. Open. C.O. Closed.… | ||
| 04-page017 | Graph comparing the acceleration of the 22 EX and 25 EX models with different engine configurations. | ||
| View original record | ACCELERATION 22 EX. AND 25 EX. 22 EX. (50 1/4 CWT) SEMI EXP. CARB, 114º E.82448 CAMSHAFT 5.25 C/R 11/41 AXLE 25 EX (48 3/4 CWT) STD. CARB. STD. CAMSHAFT 5.00 C/R 11/41 AXLE TYRES 7.00 x 20 TESTS ON… | ||
| 04-page018 | Graph showing the effect of different carburettor needles on acceleration. | ||
| View original record | ACCELERATION-19-Ex EFFECT OF CARBURETTOR NEEDLE SEMI EXP: CARB: LE C.2972 ACCEL: - FT/SEC² SPEED M.P.H. LEGEND: Solid Line: 90° NEEDLE Dashed Line (x): 85° NEEDLE Dash-Dot Line (o): 95° NEEDLE 12/41… | ||
| 04-page019 | Graph comparing power output with a 5.25 compression ratio using various carburettor and component configurations. | ||
| View original record | RM.P53 COMPARISON OF POWER OUTPUT WITH 5.25 COMP. RATIO 114° CAMSHAFT (E. 82448) (LONG TYPE SILENCER - CUT-OUT OPEN) (DOUBLE VALVE SPRINGS) (STANDARD ROCKERS) ① STANDARD P.I. CARBURETTER AND INTAKE… | ||
| 04-page020 | Graph comparing power output against RPM for four different carburettor and intake configurations with a 5.25 compression ratio. | ||
| View original record | COMPARISON OF POWER OUTPUT WITH 5.25 COMP RATIO R.M.P 54 1 1/4" CAMSHAFT (E.82448) (LONG TYPE SILENCER COMPLETE) (DOUBLE VALVE SPRINGS) (STANDARD ROCKERS) ① STANDARD P.II. CARB & INTAKE SILENCER ②… | ||
| 04-page021 | Graph comparing power output (B.HP vs R.P.M.) for various carburetor, exhaust, and silencer configurations. | ||
| View original record | COMPARISON OF POWER OUTPUT. VARIOUS CARBS. OPEN EXHAUST 114° CAMSHAFT E.82448 DOUBLE VALVE SPRINGS 5.25 C.R. B.H.P. R.P.M. M.P.H. 11X41 AXLE 7X20 TYRES CURVE LABELS: 2 SU CARBS. SEMI-EXPANDER STD.… | ||
| 04-page022 | The Phantom II (19-EX) car's semi-expanding carburetter following a 10,000-mile test in France. | ||
| View original record | To R. From Hs. c. to R. c. to Wor. E. c. to De. By. c. to Hdy. PHANTOM II. 19-EX. Car has now returned after 10,000 miles test in France. This car has been running principally in order to enable… | ||
| 04-page023 | Petrol pump failures and governor performance on a 19-EX car. | ||
| View original record | -2- Re./WJ.16.3.32. Cont'd. PETROL PUMP. The petrol pump on 19-EX. car failed twice with F'W. on the mountain passes. This was partly due to petrol boiling and producing vapour locks (precautions had… | ||
| 04-page024 | Comparative fuel consumption tests between car models 19-EX and 25-EX. | ||
| View original record | 87080. To Hs. from GWH. Hs/GWH.3/KT.16.8.32. Comparative consumption tests taken with 19-EX, semo-expanding carburetter, 5.25 to 1 compression ratio, 12 X 41 axle ratio, 7" X 19" wheels; and 25-EX,… | ||
| 04-page025 | Development stages and specification for the semi-expanding carburetter. | ||
| View original record | To E. from Hs/Rm. To Ey. c. Wor. Hs/Rm.2/AD25.8.32. X7080. R.R. SEMI-EXPANDING CARBURETTER We have had various stages of this carburetter running on experimental cars. The point has now arrived where… | ||
| 04-page026 | Specification sheet for an expanding carburetter (P.II). | ||
| View original record | 24.8.32. SPECIFICATION FOR EXPANDING CARBURETTER (P.II) The expanding carburetter which has been run in France on 19-EX was built to Lec.3026, LOP.E.83075 with the exception of the following.… | ||
| 04-page027 | Blueprint for an Actuating-Rod (Main Jet). | ||
| View original record | V1355 TURN .367 DIA -4 SCREW .375 DIA 20 T.P.I. - Rt Hd - 4 STARTS .200 LEAD PIN TO BE DRIVEN IN THUS .2375 .311 DIA .025 CHAMFER +10 AT 45° ROLLS-ROYCE, LTD. PRINT ROOM AUG 24 1932 DERBY 27-4-32 .625… | ||
| 04-page028 | Technical drawing of an actuating rod nut. | ||
| View original record | V1356 DRILL AND REAM TO SUIT .093 DIA TAPER PIN (TAPER 1 IN 48 ON DIA) WITH SPINDLE IN POSITION .500 ±5 .575 ±5 1.150 +10 .250 ±5 .525 DIA -10 .3125 DIA +1 .025 RAD -10 .050 RAD +10 .225 -10 DRILL… | ||
| 04-page029 | Experimental drawing of a Needle Valve (A1) showing taper dimensions. | ||
| View original record | V/406 .145 DIA AT TOP OF TAPER ±1 .075 3°-12' ANGLE TAPER .085 DIA AT BOTTOM OF TAPER ±1 OTHER DIMENSIONS SEE EX7877 NEEDLE VALVE (A1) EXPD'G ROLLS-ROYCE, LTD. PRINT ROOM AUG 24 1977 DLR Y 24-8-77 | ||
| 04-page030 | Blueprint detailing modifications to a diffuser for an experimental carburettor. | ||
| View original record | V1407 .800 4 HOLES DRILL .055 DIA 2-.055 DIA HOLES AND FLUTINGS SHOWN ON E83321 TO BE DELETED .725 4 HOLES DRILL .039 DIA MODN TO DIFFUSER (AT EXP CARB) OTHER DIMENSIONS SEE E83321 ROLLS-ROYCE, LTD.… | ||
| 04-page031 | Blueprint of a modification to a carburettor diffuser body assembly. | ||
| View original record | V1405, DIFFUSER BODY (V1407), JET EXTENSION 1.00, SLOW RUNNING FEED HOLE DRILL .125 DIA, MODN TO LEC 3026 (PT EXPG CARB), ROLLS-ROYCE LTD, PRINT ROOM, AUG 23 1932, DERBY., WAF, 22-8-32 | ||
| 04-page032 | The design of a separate starting carburetter for the Phantom II model. | ||
| View original record | BY. c. Hs. ----- X7280. E/JNR.3/HP.6.9.32. ------------------- Phantom II with semi-expanding carburetter. ------------------------------------------ Controls. We send you herewith LeC.3188 Starting… | ||
| 04-page033 | Standardisation sheet and introduction of a new semi-expanding carburettor for the Continental type chassis. | ||
| View original record | X7080 HS To H.R., from Sg. Copy to Hs. re NewType Semi-Expanding Carburetter. Sg1/E7.9.32 The position at the conference last week was, as you will remember, that Hs. would issue a standardisation… | ||
| 04-page034 | Instructions for the adjustment of the Phantom II semi-expanding carburetter. | ||
| View original record | X7080 BY. from Hs/Swdl. C. Sft. C. MX. EP. Hs/Swdl.12/KT. 21.9.32. ADJUSTMENT OF PHANTOM II. SEMI-EXPANDING CARBURETTER (Lec.3026). In the assembly of this carburetter and the setting of the jets, the… | ||
| 04-page035 | Instructions for mixture control, low speed jet setting, and slow running unit assembly. | ||
| View original record | -2- HS/Swd1.12/KT.21.9.32. (2) Mixture Control. The control is arranged for full strong to be the starting position and acceleration with a cold engine. When the engine is thoroughly hot the control… | ||
| 04-page036 | Instructions for carburettor mixture control, starting procedures, and high-speed jet settings. | ||
| View original record | -3- Hs/Swdl.12/KT.21.9.32. described, the mixture control must be in the "full strong" or starting position. The throttle should be then opened very slightly and when the engine fires the throttle… | ||
| 04-page037 | Specifications for carburetor components including the suction piston, taper needle valve, and diffuser. | ||
| View original record | -4- Hs/Swdl.12/KT.21.9.32. (8) Suction piston & chamber. The diametrical clearance between the suction piston and chamber is .003 to .004, or circumferential clearance of .0015 to .002, throughout the… | ||
| 04-page038 | Description of the general construction and petrol flow within the carburetter. | ||
| View original record | -5- Hs/Swdl.12/KT.21.9.32. General Construction of the Carburetter. Petrol is fed from the floatchamber via .255 diameter hole in the carburetter casting, into a well below the main jet mechanism,… | ||
| 04-page039 | Cold starting issues with the R.R. Phantom II Semi Expanding Carburetter, detailing modifications made to improve performance. | ||
| View original record | X7080. E. from Hs/CTS. c. to BY. Hs/CTS.1/KT.28.9.32. R.R. P.II. SEMI EXPANDING CARBURETTER. Starting Up (Cold). On Experimental cars fitted with the Semi Expanding carburetter, trouble has been… | ||
| 04-page040 | Drawing of the Body (Slow Running Jet) for a Semi-Expanding Carburettor. | ||
| View original record | V1414 ALL OTHER DIMENSIONS THE SAME. EXCEPT THAT. THIS END IS NOT DRILLED SEE E.82875. 2.725 2.375 .250 DIA. RAD TO SUIT ROLLS-ROYCE, LTD. PRINT ROOM SEP 28 1932 DERBY. 2.175 1.575 .350 .300 .068 .405… | ||
| 04-page041 | Confirming parts and modifications for a semi-expanding carburetter. | ||
| View original record | BY. from Hs/Rm. c. RHC. XJ 080. Hs/Rm.1/KT.30.9.32. SEMI EXPANDING CARBURETTER. This is to confirm various conversations on the subject that the parts requiring detailing and issuing are to LeC.3210… | ||
| 04-page042 | The need for sketch Hs.719 on production carburetters, pending cold weather for testing. | ||
| View original record | X7080. BY/SS. from Hs/Rm. Hs/Rm.10/KT.3.10.32. We anticipate that we shall want sketch Hs.719 on production carburetters. We are really waiting for some cold weather to give us starting conditions… | ||
| 04-page043 | Confirming the deletion of the small gauze filter for the low speed jet on the Phantom II Carburetter. | ||
| View original record | To BY. from E. c. Wor. Hs. x7080. E.1/HP.4.10.32 re Phantom II Carburetter. This is to confirm that we agree to deleting the small gauze filter that services the low speed jet. This filter is likely… | ||
| 04-page044 | Confirming a new taper needle (V.1438) following road tests for the Phantom II Semi-Expanding carburettor. | ||
| View original record | 87080. To By. From Hs/Swdl. c. to RHC. Hs/Swdl.1/MA.26.10.32. Recent road tests carried out by G.W.H. have shown that taper needle to (V.1438) gives the most satisfactory results. Accordingly, this… | ||
| 04-page045 | Blueprint of a taper needle for a semi-experimental carburettor. | ||
| View original record | 'V1438 .145 DIA AT TOP OF TAPER 1.075 (3°-28') ANGLE TAPER .080 DIA AT BOTTOM OF TAPER OTHER DIMENSIONS SEE Ex7897 TAPER NEEDLE (PH. SEMI-EXP CARB) ROLLS-ROYCE, LTD PRINT ROOM NOV 2 1942 DERBY.… | ||
| 04-page046 | Weakness and proposed spring-based fix for the Phantom semi-expanding carburetter's acceleration metering. | ||
| View original record | x7080 From Hs/GWH. c. to [illegible crossed out] Hs/GWH.10/KT.17.10.32. x7120 Re. PHANTOM SEMI-EXPANDING CARBURETTER. We have had during our tests with the semi-expanding carburetter a weakness in the… | ||
| 04-page047 | Consumption and acceleration tests on a semi-expanding carburetter. | ||
| View original record | 87080. For Files. 7.11.32. X1725 19-EX. CONSUMPTION TESTS WITH SEMI-EXPANDING CARBURETTER. We have been carrying out consumption tests along with acceleration tests to obtain the best compromise with… | ||
| 04-page048 | Modifications to the air valve, needle, and diffuser to improve fuel mixture and consumption. | ||
| View original record | -2- The air valve and needle having been drawn upwards at these speeds the needle is working on a very slow taper. At low speeds when the air valve is at the bottom the .050" movement of the jet is… | ||
| 04-page049 | The development and starting difficulties of the new R.R. Semi Expanding Carburetter. | ||
| View original record | x 7080 To R. From Hs. c. to Sg. Wor. c. to E. Da. c. to By. Hdy. Hs.7/MJ.8.11.32. R.R. SEMI EXPANDING CARBURETTER. These carburetters are now in production on the Phantom and we expect to be… | ||
| 04-page050 | Improving carburettor efficiency, control, and starting procedures. | ||
| View original record | -2- Hs.7/MT.8.11.32. Cont'd. EFFICIENCY.- It will be seen from some of our curves that we can still obtain more power from the T.U. than we can from the R.A. semi expanding carburetter. There is no… | ||
| 04-page051 | Decision to retain the standard starter carburetter for the Phantom II vehicle following testing. | ||
| View original record | To Sg. From Hs. c. to Wor. c. to E. c. to By. 7080 X7280 PHANTOM 11 SEMI EXPANDING CARBURETTER. As the result of further tests on the starting of the semi expanding carburetter we have come to the… | ||
| 04-page052 | Starting reliability issues with the semi-expanding carburetter on the Phantom II. | ||
| View original record | x7080 S/W. To Hs. from Sg. Copy to Wor. " E. " DV. Sg5/D11.11.32 Re: Phantom II with Semi-Expanding Carburetter I am in receipt of Hs2/MJ.10.11.32 and have also seen Hs7/MJ.8.11.32. Personally, I am… | ||
| 04-page053 | Starting difficulties with the Phantom II semi-expanding carburetter and proposing an experimental modification. | ||
| View original record | 87080 To R. from E. E.3/HP.12.11.32. c. Sg. Wor. Hs. By. PN. RECEIVED re Starting with Phantom II Semi-expanding carburetter. We have always recognized that starting would be more difficult with the… | ||
| 04-page054 | Instruction regarding the semi-expanding carburetter and slow running device for the 40/50 HP O.2 series. | ||
| View original record | BY/CS. c.Hs. X7080 BY/SS14/J.23.11.32. 40/50 HP. O.2 Series - Semi Expanding Carburetter Throttle Edge Slow Running. In the continental type chassis in the first 50 of O.2 series, will you please… | ||
| 04-page055 | Requesting instructions for tests on a Phantom II carburetter to understand the effects of the low-speed jet on a starting carburettor. | ||
| View original record | X7080. RHC. From Hs/Rm. 66 Hs/Rm.14/MA.14.11.32. P.II CARBURETTER. (test Bed.) It is desirable to carry out tests on this carburetter so that the effects of the low speed jet on a starting carb. may… | ||
| 04-page056 | Power loss tests conducted on resonance air silencers for a Phantom II semi-expanding carburettor. | ||
| View original record | X7080. 25.11.32. POWER LOSS TO RESONANCE AIR SILENCERS. P.II SEMI-EXPANDING CARBURETTER. Unit P.II. 25. Comp. Ratio 5.25:1 Camshaft E.62443 (1149) Three silencers have been tested for power loss in… | ||
| 04-page057 | Tests conducted on Phantom II Semi Expanding Carburettor air silencers. | ||
| View original record | To Hs/Rn. From H.Whyman. e. Hs/Lid. 22.11.32. TESTS ON P.II SEMI)EXPANDING CARBS. (Cont'd.) Continuing our report of 3.11.32., the 3 air silencers in question have now been tested on the Unit Bed for… | ||
| 04-page058 | Drawing of a telescopic experimental air silencer. | ||
| View original record | TELESCOPIC EXPERIMENTAL AIR SILENCER. FILLED WITH CLEANER SMITH'S AIR WIRE. TO CARB. | ||
| 04-page059 | Report page detailing experiments on an air intake system with a sketch of two tuning chambers. | ||
| View original record | -2- lower speed roars, keeping the small chamber as the second tuning chamber. By this we mean that the larger of the tuning chambers should be the first one to deal with the air intake as per sketch.… | ||
| 04-page060 | Hand-drawn diagram illustrating modifications to a pipe, likely an air intake, with specified dimensions and hole patterns. | ||
| View original record | 6.5 4.00" 15.00" 1 ROW OF 12 - 1/2" HOLES. 5.00" 2 ROWS OF 12 - 1/2" HOLES To CARB. [Faint text in background appears to be part of a report] ...to the carburettor...silencer- ...tested on the… | ||
| 04-page061 | Testing twin S.U. carburettors and silencers on model 19.G.IV. | ||
| View original record | To Hs/Rm. From H. Whyman. TWIN S.U. CARBS. ON 19.G.IV. The first carburetters we tested were the H.V.5 type with inlet poet size of 1¾". This pair of carbs roar very badly, considerably worse than the… | ||
| 04-page062 | Performance graph comparing engine output with and without an AC Air Silencer for a J.3 Head unit. | ||
| View original record | UNIT C.D. 20/25 J.3 HEAD A.C. AIR SILENCER 6.3:1 COMP. RATIO E6777 (No. 12) CAMSHAFT 2 - 1.625 S.U. CARBS. ① WITH A.C. SILENCER ② SILENCER REMOVED | ||
| 04-page063 | Tests conducted on a Phantom II semi-expanding carburetter, focusing on intake silencer design and efficiency. | ||
| View original record | To Hs/Rn. " Hc/Lid. 3.11.32. TESTS ON P.II. SEMI-EXPANDING CARB. (Cont'd). Continuing our tests on Phantom II semi-expanding carburetter on 19-EX, we fitted a large air intake alongside the induction… | ||
| 04-page064 | Tests to cure air intake roar on a Phantom II using a de-tuner with a semi-expanding carburetter. | ||
| View original record | Hs/Rm. from G.H. Whyman. C. to Hs/Ltd. C. hs/32/14/10 Tests to cure Air Intake Roar on Phantom II. with Semi Expanding Carburetter fitted. The first tests were carried out on 22-EX. This was… | ||
| 04-page065 | Report page detailing tests on plunger position and a sketch of an air silencer and de-tuning chamber. | ||
| View original record | -2- We then carried out a series of tests on the road and found that the best position of plunger 'C' in chamber 'B' was 3.5" to 4" from No.3 aperture in A. This position was then confirmed by running… | ||
| 04-page066 | Road and dynamometer tests of an air silencer on experimental cars (20-EX, 22-EX). | ||
| View original record | -3- This air silencer appeared very satisfactory on the dynamometer, and so we again tested the car on the road with the result that the 57 - 63 m.p.h. roar was as good as cured, and from 63 m.p.h.… | ||
| 04-page067 | The decision to retain the standard starter carburetter for the Phantom II following tests on a semi-expanding carburetter. | ||
| View original record | To Sg. From Hs. c. to Wor. c. to E. c. to By. X7-80. Hs.2/WJ.10.11.32. X7080. PHANTOM II SEMI EXPANDING CARBURETTER. As the result of further tests on the starting of the semi expanding carburetter we… | ||
| 04-page068 | The development and testing of carburetter intake silencers, including comparisons with American designs. | ||
| View original record | To R. from Hs/Rm. c. Sg. Wor. c. E. By. c. Da. Hdy. Hs/Rml/BE.28.11.32. K5080 X441 CARBURETTER INTAKE SILENCERS - GENERAL We have done now sufficient work on intake silencers to be able to say that we… | ||
| 04-page069 | The design and development of an A.C. Silencer for a 5-litre engine. | ||
| View original record | -2- Hs/Rml/BE28.11.32. The A.C. Silencer was designed for a 5-litre engine i.e. 35% smaller than the Phantom. In spite of this its capacity is greater than all except one, of the silencers that we… | ||
| 04-page070 | Test report on alternative designs and fitments for a semi-expanding carburetter air intake silencer. | ||
| View original record | -3- Hs/Rml/BE28.11.32. P.II. SEMI-EXPANDING CARBURETTER AIR INTAKE SILENCER. Tests on the Phantom semi-expanding carburetter have demonstrated that we require a certain minimum length of intake pipe… | ||
| 04-page071 | Intake silencer tests, comparing efficiency, power loss, and weight for various designs. | ||
| View original record | -4- Scheme 2. Tests shewed that to get the best results it was necessary to have a certain length of intake. Also that the efficiency depended not only on the capacity of the chambers and the point of… | ||
| 04-page072 | Recommendation for an intermediate-sized air intake silencer, illustrated with a photograph of it fitted to an engine. | ||
| View original record | -5- Hs/Rm.1/BE.28.11.32. Cont'd. Summarising the results, we should recommend the intermediate size of silencer of the type above the induction pipe as being a good compromise and attach a photograph… | ||
| 04-page073 | Blueprint detailing designs for resonance silencers for a semi-expanding carburettor. | ||
| View original record | B P II RESONANCE SILENCERS FOR SEMI EXPANDING CARBURETTER. HS 780 ③ 3.5" 10.25 2.813 5.875 HOLES AS ① & ② CAPACITY OF RESONANCE PORTION OF SILENCER: 300 CU. INS. POWER LOSS: NIL ON P II ④ 15.0" 7.0"… | ||
| 04-page074 | Blueprint comparing two designs of Phantom II intake resonance silencers for a semi-expanding carburetter. | ||
| View original record | HS 781 P.II INTAKE RESONANCE SILENCERS FOR SEMI - EXPANDING CARBURETTER. DESIGN 1: 20 .250 DIA HOLES 20 - .5 DIA. HOLES CAPACITY OF RE PORTION OF SILENCER: 139 CU. INS. POWER LOSS: 6 B.H.P. ON 160… | ||
| 04-page075 | Blueprint showing two types of American intake silencers for Chrysler and Nash vehicles. | ||
| View original record | Hs 782 C TYPES OF AMERICAN INTAKE SILENCER A. C. BURGESS AIR SILENCER 32 HP CHRYSLER 24.5" 19.0" PERFORATED SHEET .0625 DIA HOLES .250 PITCH 4.250 2.250 5.250 2.250 WT OF SILENCER 5 LBS 14 OZ WT OF… | ||
| 04-page076 | Blueprint showing a typical A.C. silencer for a 5-litre car. | ||
| View original record | TYPICAL A.C. SILENCER 5 LITRE CAR SEC: HS.782. HS 783 | ||
| 04-page077 | Modifications to be carried out on a Phantom II semi expanding carburetter from car 58-GN. | ||
| View original record | x7080 To RHC. From Hs/Swdl. Hs/Swdl.10/MJ.29.11.32. Will you please carry out the following on P.II semi expanding carburetter off 58-GN. (1) Suction piston sticking in chamber. (2) Throttle edge plug… | ||
| 04-page078 | Modifications to the Phantom II Semi-Expanding Carburetter. | ||
| View original record | X5080 E/JNR.1/HP.30.11.32 To BY. from E/JNR. c. Wor. Hs. RHC. Hs/Swdl. re Phantom II Semi-Expanding Carburetter. Please receive herewith: LeC.3294 - Modifications to the slow speed runner. (1) We have… | ||
| 04-page079 | Modifications to the Phantom II Semi-Expanding Carburetter. | ||
| View original record | x7080 To DY. from E/JNR. c.c. Mr. Hs. RHC. Hs/Smdl. re Phantom II Semi-Expanding Carburetter. Please receive herewith: LeC.3294 - Modifications to the slow speed runner. (1) We have provided a finger… | ||
| 04-page080 | Reduction in clearance for the Semi Expanding Carburetter's Air Valve Centre Spindle and bush. | ||
| View original record | [Stamp: RECEIVED DEC 7 1932] [Stamp: P. Dept. (struck through)] [Handwritten: c.RHC.] c.Hs/Swdl. [Handwritten: Y7080] BY/SS2/J.7.12.32 P.2 - Semi Expanding Carburetter. We are informed by the… | ||
| 04-page081 | Photograph and the design of a vertical silencer for a semi-expanding carburetter. | ||
| View original record | To R. From Hs/Rm. c. to Sg. Wor. c. to E. By. c. to Da. Hdy. 7080 Hs/Rm.7/MJ.19.12.32. x442 We send you herewith a photograph of the vertical silencer fitted to the R.R. semi-expanding carburetter. It… | ||
| 04-page082 | Photograph of an installed inline-six engine, showing the carburettor, air intake, and distributor. | ||
| View original record | 13 JS | ||
| 04-page083 | Excessive suction noise from a new type of carburetter for the Phantom II 'O' Series. | ||
| View original record | Hs. [Redacted] X7080. EP13/H23.12.32. re. PHANTOM II. "O" SERIES. NEW TYPE CARBURETTERS. I have now tested and accepted two of the above chassis for delivery, and as discussed with you today, I… | ||
| 04-page084 | Increased suction noise of a new carburetter for the Phantom II 'O' Series. | ||
| View original record | To EP. From Hs. c. to Wor. c. to E. 87080. Hs.1/MJ.28.12.32. Re. PHANTOM II "O" SERIES. NEW TYPE CARBURETTER. Replying to EP.13/H23.12.32. 19-EX. car which ran 10,000 miles in France and which you… | ||
| 04-page085 | Requesting an experiment on a semi-expanding carburetter to resolve a weakening off issue. | ||
| View original record | L. Swindell. 67080 Hs/Rm.3/KT.31.12.32. SEMI EXPANDING CARBURETTER. E. wishes us to carry out an experiment on this carburetter drilling a hole from the floatchamber, above the level of the fuel, to… | ||
| 04-page086 | Additional feature for Semi-Expanding Carburetters on J.2 and Phantom II models. | ||
| View original record | To BY. from E. c. to Hs. re Semi-Expanding Carburetters. Please receive herewith. Lec.3334 - showing an additional feature to be added to the J.2 and Phantom 2 carburettors. The object of this is to… | ||
| 04-page087 | Modifications to resolve hesitation issues on Phantom II carburetters. | ||
| View original record | from G.H. Whyman. Y7080 6.1.33. HESITATION ON P.II. CARBURETTERS. We have now completed a series of tests on chassis'. 19-EX, 58-GN, and a production chassis No. 24-MY, to overcome the hesitation spot… | ||
| 04-page088 | Test results for a Semi-Expanding Carburetter P.II, detailing efforts to prevent air leaks and balance float chamber depression. | ||
| View original record | E. from Hs/Swdl. C. to Hy. 87080 Hs/Swdl.12/KT.9.1.33. SEMI-EXPANDING CARBURETTER P.II. We have tested the scheme to Lec.3334, the object being to prevent air leaking past the mixture control into the… | ||
| 04-page089 | Recommendation for assembling a control spindle to prevent leaks in the float chamber. | ||
| View original record | -2- Hs/Swd1.12/KT.9.1.33. feed, to compensate for a slack fitting taper needle, it is important that the depression in the floatchamber should be unaltered by any leak externally, such as leak down… | ||
| 04-page090 | Request to produce a further set of parts for the large air valve of a 40/50 carburetter. | ||
| View original record | RHC. from Hs/Rn. 87080. Hs/Rn. 2/KT.12.1.33. LARGE AIR VALVE. 40/50 CARBURETTER. 3137* Will you please put in hand a further set of parts to LeC. 3277*, the large air valve, 40/50 carburetter, LOP.E.… | ||
| 04-page091 | The re-issue of a document on semi-expanding carburettors and refinements to increase jet spring pressure. | ||
| View original record | X7080 To BT. from E/JNR. c. Hs. re Semi-Expanding Carburetters. We re-issue to you: LeC.3334 - dealing with the prevention of air leaks down through the mixture control of the instrument.… | ||
| 04-page092 | Redesigned throttle edge adjustment for semi-expanding carburetters on Phantom II and J.2 models. | ||
| View original record | x7080 To BY. from E/JNR. E/JNR.4/HP.16.1.33. c. Hs. re Semi-Expanding Carburetters - Phantom 2 and J.2. Please receive herewith: LeC.3349 - Re-designed R.R. Throttle Edge Adjustment. E/JNR. x7080… | ||
| 04-page093 | Design of a resonance air silencer for the Phantom II Semi-Expanding Carburetter. | ||
| View original record | YMN x2080. see me HS To BY from E/JNR. E/JNR.1/HP.21.1.33. RECEIVED 21 JAN 1933 c.c. to Mr. Hs. Phantom 2 Semi-Expanding Carburetter. We send you herewith - LeC.3354. This is a complete design of a… | ||
| 04-page094 | Requesting two larger air valve Phantom II carburetters with modifications. | ||
| View original record | 87080. RHC. from Hs/Rm. Hs/Rm.17/KT. 25.1.33. P.II. CARBURETTERS. We require two more larger air valve P.II carburetters. We attach a list showing the modifications required to the original design.… | ||
| 04-page095 | Tester's report on rectifying a 'luffing up' issue with a Phantom II semi-expanding carburettor. | ||
| View original record | 87080 E. From Hs. c. to Ry. c. to Wor. c. to Mx. c. to EP. Hs.3/MA. 31.1.33. Copy Of Our Tester's Report Re. SEMI-EXPANDING CARB. P.II. Tests have been carried out in respect of the "Luffing up"… | ||
| 04-page096 | And recommending modifications to a standard carburetter. | ||
| View original record | -2- HS.3/MA.31.1.33. Cont'd. Rm. tried the car with the carburetter in its standard condition, and with our modifications fitted, and agreed to the standardization of our fitments. The modifications… | ||
| 04-page097 | Blueprint showing a modification to a diffuser component. | ||
| View original record | V1504 .062 DIA. 3 Holes 120° SECTION AA .275 .275 .032 +.10 60° 1.00 DIA CUTTER MODIFICATION TO DIFFUSER - OTHER DIMENSIONS SEE (E 83430) ROLLS-ROYCE, LTD PRINT ROOM FEB 1 1933 DERBY SECTION CC 120°… | ||
| 04-page098 | Starting carburetter controls and extra cylinder lubrication for the Phantom II. | ||
| View original record | To DY. from E/JNR. c. Hs. RHO. re Phantom II We send you herewith: LeC.3362 - Starting Carburetter Controls and controls for extra cylinder lubrication. This scheme is to be used with the resonance… | ||
| 04-page099 | Test report on the Large Phantom II Semi Expanding Carburetter, detailing modifications and performance. | ||
| View original record | E. From Hs/Swdl. c. to BY. X7080 Hs/Swdl.5/MA.6.2.33. LARGE PHANTOM II SEMI EXPANDING CARBURETTER. Preliminary tests have been carried out with the larger carburetter (Lec.3137) and shows a reduced… | ||
| 04-page100 | Resolving excessive fuel consumption by modifying the carburetter's stand pipe and float chamber. | ||
| View original record | -2- Hs/Swdl.5/MA.6.2.33. Cont'd. Satisfactory diametrical clearance between the piston and its chamber was found to be (.004). Metering. In original form the consumption at high speeds was excessive… | ||
| 04-page101 | Carburetter modifications, alterations, and subsequent performance during slow running and road tests. | ||
| View original record | -3- Hs/Swdl.5/MA.6.2.33. Cont'd. trouble and at the same time the .9 H2O higher stand pipe depression over that of the float chamber being sufficient to ensure that petrol remains in the stand pipe.… | ||
| 04-page102 | Resolving a 'luffing up' issue in a carburetter caused by a low diffuser level and proposed modifications. | ||
| View original record | -4- lis/SWdl.5/MA.6.2.33. Cont'd. "Luffing up" due to a low diffuser level was experienced if after full opening the throttle was gently eased off at speed 10-30 M.P.H. Numerous experiments concerning… | ||
| 04-page103 | Blueprint for a PII carburettor needle, showing taper diameters. | ||
| View original record | V1509 .167 DIA AT TOP OF TAPER .095 DIA AT BOTTOM TAPER FOR OTHER DIMENSIONS SEE E83378 NEEDLE PII CARB ROLLS-ROYCE, LTD. PRINT ROOM FEB 7 1933 DERBY VR | ||
| 04-page104 | Blueprint detailing a modification to a float chamber vent position. | ||
| View original record | V1507 90° .250 DIA TUBE BLANKED END VENT EXTENSION 4 HOLES .062 DIA 2 ROWS OF 2 AT RT ANGLES 1.250 FLOATCHAMBER VENT HOLE MOD'N FLOATCHAMBER VENT POSITION. PH.II. EXPANDING CARB LCC 3137. ROLLS-ROYCE,… | ||
| 04-page105 | Performance graph showing Power Output, BMEP, and RPM for a Phantom II engine with an open exhaust. | ||
| View original record | V1508 POWER OUTPUT (PHANTOM II)(OPEN EXHAUST) LARGE SEMI-EXPANDING CARBURETTOR (LEC 3137) 5.25:1 COMPRESSION RATIO 114° CAMSHAFT (E59444.S) PISTON STONED ROLLS-ROYCE LTD PRINT ROOM FEB 7 1935 DERBY… | ||
| 04-page106 | Standardisation of a Semi-Expanding Carburetter to increase engine efficiency. | ||
| View original record | RR 755 (10H) (30405. 21-4-32) BM. S/6362/4. X.7080. COMPLETED 8.2.33. STANDARDISATION of CHASSIS PARTS. Date 6.9.32. Description of Parts. SEMI-EXPANDING CARBURETTER. Origin. To increase efficiency of… | ||
| 04-page107 | Standardisation form for a new chassis part to be fitted to the 'J' Series Continental Chassis. | ||
| View original record | STANDARDISATION of CHASSIS PARTS The number of the first chassis on which the new part will be fitted......... 'J' Series (Continental Chassis Only.) Date when chassis will be handed to test.... 19th.… | ||
| 04-page108 | Proposed modifications to the Large Phantom II Semi-Expanding Carburetter. | ||
| View original record | X7080 To Hs. from E. E.12/HP.16.2.33. c. By. Hs/Swdl. RECEIVED 17 MAR 1933 Large Phantom 2 Semi-Expanding Carburetter. Referring to your report Hs/Swd15/MA6.2.33, we propose to increase the throttle… | ||
| 04-page109 | Test report on a Phantom II 'O' Series Continental Model with a semi-expanding carburettor. | ||
| View original record | Wor. c. Hs. E. BY X7080 EP3/H20.2.33. re.PHANTOM II. "O" SERIES. CONTINENTAL MODEL. SEMI-EXPANDING CARB. We were able to test the first complete car "Production" of the above - Barker close coupled… | ||
| 04-page110 | Inquiring about the experimental fitting of carburettor air silencers to 20/25 and Phantom II chassis. | ||
| View original record | YJ5080 Copy. To Hs. from E. E.4/HP.24.2.33. re Carburetter Air Silencers. We should be glad to know if you have any idea yet when an air silencer to LeC.3363 will be fitted to a 20/25 chassis… | ||
| 04-page111 | Query regarding the experimental fitting of carburetter air silencers to a 20/25 and a Phantom II chassis. | ||
| View original record | S W WYMAN X7080 To Hs. from E. E.4/HP.24.2.33 re Carburetter Air Silencers. X7080 X7080 We should be glad to know if you have any idea yet when an air silencer to LeC.3363 will be fitted to a 20/25… | ||
| 04-page112 | Fitting carburetter air silencers to specific chassis. | ||
| View original record | Hs. From Whymann. Hs/Whymann. 7/MA. 27.2.33. Re. CARBURETTER AIR SILENCERS. An air silencer to LeC.3363, and another one to LeC.3354, will be fitted to 18.G.4 and 20-EX. respectively by the end of… | ||
| 04-page113 | Experiments to locate a restriction point in Phantom II large air valve carburettors. | ||
| View original record | X7080 To E. from Hs/Rn. c. to By. Hs/Rn.1/KT.28.2.33. P.II CARBURETTERS. The attached report shews that we have not yet located the main point of restriction in the P.II large air valve carburetter.… | ||
| 04-page114 | The fitting of carburetter air silencers. | ||
| View original record | Hs. From Whymann. Hs/Whymann. 7/MA. 27.2.33. Re. CARBURETTER AIR SILENCERS. An air silencer to LeC.3363, and another one to LeC.3354, will be fitted to 18.G.4 and 20-EX. respectively by the end of… | ||
| 04-page115 | Test report on a semi-expanding carburetter, detailing modifications to the throttle bore and their effect on induction pipe depression. | ||
| View original record | E. from Hs/Swdl. c. to By. Hs/Swdl.2/KT.28.2.33. SEMI EXPANDING CARBURETTER (LEC.3137). Further to our preliminary report on this carburetter, we have tested a throttle bore of 2.375 this being… | ||
| 04-page116 | Test data sheet showing induction pipe depression and necessary piston lift under various engine configurations at 3000 rpm. | ||
| View original record | -2- Hs/Swdl.2/KT.28.2.33. All tests taken at 3000 r.p.m. (Open exhaust). Condition of test (Intake body-E.83324-only). | Induction Pipe depn. Ins. Hg. --- | --- Standard 2.25 dia. throttle body (std.… | ||
| 04-page117 | The performance gain from a semi-expanding carburetter on the Phantom II. | ||
| View original record | V7080 R. From Hs/Swdl. c. Sg. WoR. c. E. Da. c. Hy. Hdy. Hs/Swdl.1/KT.4.5.33. P.II. SEMI EXPANDING CARBURETTER. Attached is a curve showing that the total gain, due to the large air valve semi… | ||
| 04-page118 | Performance graph comparing the power output of a Phantom II engine with a standard versus a larger expanding carburettor. | ||
| View original record | RM P54 V1525 POWER OUTPUT (PHANTOM II) OPEN EXHAUST. COMPARISON BETWEEN STD EXPANDING CARB. (E.83441) AND LARGER EXPANDING CARB. (LEC. 3137) (INTAKE BODY (E.83924)) 5.25:1 COMPRESSION RATIO 114°… | ||
| 04-page119 | Performance of a semi-expanding carburetter silencer during London Trials on car 20-MY. | ||
| View original record | X7080 S/W. Hs...from PN. Copy to Cx. PN.1/WT6.3.33. 40/50 H.P. Semi-expanding carburetter silencer. When testing 20-MY (London Trials) to-day I found the car nice to handle and the performance quite… | ||
| 04-page120 | Fitting of an air silencer to the 40/50 semi-expanding carburetter. | ||
| View original record | To PN. From Hs. c. to Cx. Hs.5/MJ.7.3.33. 40/50 SEMI EXPANDING CARBURETTER. Replying to FN.1/WT.6.3.33. The question of fitting an air silencer to the semi-expanding carburetter was recommended by us… | ||
| 04-page121 | List of modifications for the large Phantom II carburetter. | ||
| View original record | X7080 RHC. from Hs/Swdl. Hs/Swdl.18/KT.9.3.33. Will you please incorporate the following modifications in the large Phantom II carburetter (Lec.3137) at present being built. (1) (V.1494) modification… | ||
| 04-page122 | Request to manufacture six throttle spindle bushes in BZ/PC for a Phantom II carburetter due to issues with the original Duralumin material. | ||
| View original record | X 7080 RHC. from Hs/CTS. Hs/CTS.4/KT.14.3.33. PHANTOM II CARBURETTER. We have been notified by the Test Dept. of trouble encountered through the fitting of throttle spindle bushes in material… | ||
| 04-page123 | Urgent inquiry about the development and fitting history of a new air silencer for car models 19-EX and 58-GN. | ||
| View original record | S/W. Hs. URGENT. re: 19-EX. About the beginning of November last 19-EX came to London for certain of us to try in connection with certain features that had been added to the engine and chassis… | ||
| 04-page124 | Tests on a semi-expanding carburettor and a resonance-type air silencer for cars 19-EX and 58-GN. | ||
| View original record | To Cx. From Hs. 87080 Hs.4/MJ.15.3.33. Re. 19-EX. Replying to Cx.11/KW.14.3.33. The original tests on the semi-expanding carburetter were run on 19-EX. This car ran 10,000 miles in France and was run… | ||
| 04-page125 | Throttle sticking issues and potential solutions for the Phantom II Semi Expanding Carburetter. | ||
| View original record | X7080 E.) from Hs/CTS. BY.) c. to Mx. Hs/CTS.9/KT.15.3.33. PHANTOM II SEMI EXPANDING CARBURETTER. Trouble has been experienced on production cars with throttle sticking. This was brought about by the… | ||
| 04-page126 | Confusion over the introduction schedule of new air silencers for Phantom II cars. | ||
| View original record | Hs To Wor. from Sg. Copy to Hs.BY.E. Cx.PN. re P.II Cars and Air Silencers. I attach copy of note from Cx. and, if the information given therein is correct, I cannot understand what has happened about… | ||
| 04-page127 | Mistake and revised plan for introducing an air silencer to the O2 series chassis. | ||
| View original record | COPY. Sg. re - Air Silencer as on your Car. Cx4/KW15.3.33 I have ascertained from BY on the telephone this morning that he made a mistake yesterday in telling me that it was proposed to introduce… | ||
| 04-page128 | The delays in introducing an air silencer for the Phantom II Cars. | ||
| View original record | from Wor. Copy to Hs. E. H. Gr. Dr. X7686 Wor5/T16.3.33. sent out 17.3.33. Re P.11 Cars and Air Silencer. Thank you for your Sgll/E15.3.33 on this matter. It is clear that everybody was aiming at… | ||
| 04-page129 | Cutaway diagram illustrating depression tests on a Semi-Expanding Carburettor Phase II. | ||
| View original record | V1530 SEMI-EXPANDING CARB. PH.II L.E.C.3137. (DEPRESSION TESTS.) A B C D ROLLS-ROYCE, LTD PRINT ROOM APR 20 1933 DERBY. 20.3.33 L.H.S | ||
| 04-page130 | Production of new silencers and their impact on existing Phantom 0.2 models and induction pipes. | ||
| View original record | Contd:-2- Wor5/T16.3.33. We decided at our conference to-day that a really special effort should be made, and I have instructed, subject to your agreement, that we make a number of these silencers in… | ||
| 04-page131 | Modified spring and attachment for the Phantom II throttle valve. | ||
| View original record | To BY. from E/JNR. c. Hs. E/JNR.5/HP.17.3.33. Phantom 2 Throttle Valve. We send you herewith: LeC.3412 showing a modified spring and attachment to the throttle. This is to overcome the complaint… | ||
| 04-page132 | Carburetter silencer noise and steering concerns on the Phantom II Continental cars. | ||
| View original record | Hs. C.BY. Silencer. [strikethrough] x7090 EP6/H18.3.33. re. PHANTOM II. NEW TYPE CARBURETTER SILENCERS. Further to ours EP13/H23.12.32. and yours Hs1/MJ.28.12.32, Sales are complaining of the suction… | ||
| 04-page133 | Proposing modifications to the semi-expanding carburetter before production. | ||
| View original record | E. from Hs/Rn. x 9790 c. to By. Hs/Rn.2/KT.21.3.33. SEMI-EXPANDING CARBURETTER - Hs/Swdl.10/KT.20.3.33. Before we go into production, we think that the large air valve carburetter could with advantage… | ||
| 04-page134 | Test report on modifications to a Large Phantom II expanding carburetter to reduce induction pipe depression. | ||
| View original record | To E. from Hs/Swdl. c. to Ey. LARGE PHANTOM II EXPANDING CARBURETTER LEC.3137. Tests have been carried out with the object of reducing the induction pipe depression from its present figure of 2.5… | ||
| 04-page135 | Carburetter modifications, airflow, and induction pipe depression tests. | ||
| View original record | -2- We do not see any reason why the air valve and throttle body should not be more centrally situated in the passage from the air valve to the choke. At present the air valve port appears to be in a… | ||
| 04-page136 | Blueprint for the proposed layout of an expanding carburettor's intake flange and air ports. | ||
| View original record | V1829 INTAKE FLANGE 2.000 6.000 CENTRES 2.750 DIA - AIR PORT 2.00 RAD PROPOSED LAYOUT IN P.II EXPANDING CARB. LEC 3137 ROLLS-ROYCE, LTD. PRINT ROOM NO 1938 20 1938 | ||
| 04-page137 | Two new designs of copper gauze air cleaners for the 20-HP and Phantom II models. | ||
| View original record | X7080 To BY. from E/JNR. E/JNR.3/HP.28.3.33. c. Wor. Hs. RHC. 20-HP. and Phantom 2 Air Cleaners. Please receive herewith: LeC.3429 - Two designs of the air cleaners made up in copper gauze, to be… | ||
| 04-page138 | Reasons for a modification to the throttle spring for the Phantom II. | ||
| View original record | To Hs. from E. c.c. by Mx. +2080 Modified Throttle Spring. Phantom 2. --------------------------------- We wish to point out that our reasons for issuing LeC.3412 - 17.3.33 are that the load thrown on… | ||
| 04-page139 | Explaining the reasoning for a modified throttle spring design for the Phantom II. | ||
| View original record | x7080 COPY. to Hs/Mr Whyman. To Hs. from E. E.6/HP.29.3.33. c.c. By. Mx. Modified Throttle Spring. Phantom 2. We wish to point out that our reasons for issuing LeC.3412 - 17.3.33 are that the load… | ||
| 04-page140 | Series of tests to resolve excessive oil consumption on 25 HP & Phantom II cars after fitting new air silencers. | ||
| View original record | x7080 30.3.33. AIR SILENCERS ON 25 HP. & P.II. CARS. Y/570 Further to our report of 16.3.33, re excessive oil consumption since fitting the new air silencers, we have now run a series of tests with… | ||
| 04-page141 | Instructions to address oil consumption on Phantom II cars by fitting a new pipe and resolving an oil breather issue. | ||
| View original record | -2- have been asked to instruct the works to fit LeC.3420 with .250" pipe replacing .500" pipe on all cars fitted with the new resonant air silencer. We are now carrying out further experiments on… | ||
| 04-page142 | Modification to the breather connection on a Phantom II crankcase. | ||
| View original record | LEC3420 REFER TO LEC3354 FOR DESIGN OF BREATHER CONNECTION. TO CARBURETTER. SECTION THRO A.A. ¢ OF Nᵒ 4 CYL: CRANK WEB .500 %D 20SWG(.036) REPLACED WITH .625 %D .5625 %D - 21SWG(.032) SWEAT IN SOCKET… | ||
| 04-page143 | Test report on depressions in the latest type Phantom Air Silencer. | ||
| View original record | X7D80 To E. from Hs/Std. c. to By. Hs/Std.4/KT.11.4.33. DEPRESSIONS IN LATEST TYPE PHANTOM AIR SILENCER. The silencer was fitted to engine P.II. No.7 and the uptake was fitted with search tubes - (a)… | ||
| 04-page144 | Requesting updates to the Peregrine and J.III carburetter drawings to incorporate improvements and fix an air lock fault. | ||
| View original record | X7080 E. } from Hs/Rm. Hs/Rm.14/KT.10.4.33. BY. } SEMI EXPANDING CARBURETTERS. From time to time we have introduced various improvements which have been incorporated on standard production cars. At… | ||
| 04-page145 | Instruction to include modification (V.1541) into the existing carburetter body (E.83047) for the Phantom II expanding carburetter. | ||
| View original record | X7580 BY. from Hs/Swdl. Hs/Swdl.11/KT.10.4.33. PHANTOM II EXPANDING CARBURETTER. Will you please instruct that details of the modification (V.1541) be included in the existing carburetter body… | ||
| 04-page146 | Sketch showing the position for a 1' spring lever on the Phantom II throttle. | ||
| View original record | To Mr from E. c. Hs/Rm. BP. x7080 E.8/HP.26.4.33. Phantom 2 Throttle. We send you herewith sketch showing the position for 1" spring lever on the Phantom 2 throttle, as agreed, and shall be interested… | ||
| 04-page147 | Analysis of throttle spring direction and its effect on bearing loads and throttle spindle wear. | ||
| View original record | x7080 To E. From Hs/Rn. c. to BY. c. to MX. Hs/Rn.1/KT. 29.4.33. THROTTLE SPRING. P.II. Referring to E.6/HP.29.3.33. The geometry shewn on Lec.3412 is without question what is desirable. The point as… | ||
| 04-page148 | Carburetter disposition and a recommendation to increase the spring load for production part Lec.3412. | ||
| View original record | -2- Hs/Rn.1/KT.29.4.33. cont'd. tends to be heavy in consequence, but for a single carburetter, convenience of disposition would seem to be the deciding factor as there is so little in the bearing… | ||
| 04-page149 | Tests conducted on the Phantom II throttle spring. | ||
| View original record | -1- TESTS ON PHANTOM II THROTTLE SPRING. These tests were carried out on Ph.II. No.25. (large bore engine), fitted with large air valve S.S. carburetter. The throttle body of this carburetter was… | ||
| 04-page150 | Test results and calculations for a throttle mechanism, comparing torque and load under different schemes. | ||
| View original record | Tests were then repeated with this scheme modified as originally suggested, i.e. spring arm was rotated 180° on throttle spindle and fixed in position with spring on opposite side of spindle (i.e.… | ||
| 04-page151 | Calculations for bearing loads and spring torque on a mechanical component under different force conditions. | ||
| View original record | -3- [Diagram of a beam with points A and B. Dimensions from left to right: 2 3/4", 5/8", 1.2". A force of 3 1/4 lbs acts upwards at a point 5/8" to the right of B. A force of 3.4 lbs acts downwards at… | ||
| 04-page152 | Design of a 2 3/8' semi-expanding carburetter for the 8 litre Phantom II. | ||
| View original record | To BY. from E/JNR. c. Mr. Hs. X7080 E/JNR.1/HP.2.5.33. re 8 litre Phantom 2. We send you herewith complete design - Lec.3432 of a 2 3/8" semi-expanding carburetter for the above car. E/JNR. | ||
| 04-page153 | Standardisation of a carburetter air silencer for a 40/50 model to reduce noise. | ||
| View original record | RR 755 (10H) (30405. 21-4-32) BM. S/6382/4. STANDARDISATION of CHASSIS PARTS. COMPLETED 9.5.33. Date 3.2.33. X No.7080 Drawing No. Part List Description of Parts. CARBURETTER AIR SILENCER 40/50… | ||
| 04-page154 | Costs and implementation schedule for a new part on the 'P' Series chassis. | ||
| View original record | STANDARDISATION OF CHASSIS PARTS The number of the first chassis on which the new part will be fitted......... 'P' Series. Date when chassis will be handed to test.. July 8th 1933. Cost of scrapped… | ||
| 04-page155 | Standardisation sheet for the deletion of the governor throttle control on the carburettor. | ||
| View original record | RR 755 (10H) (30405. 21-4-32) BM. 3/5382/4. x7080 COMPLETED 9.5.33. STANDARDISATION of CHASSIS PARTS. Date 22.4.33. X No. 7080 Drawing No. Part List Description of Parts. GOVERNOR THROTTLE CONTROL ON… | ||
| 04-page156 | Tests and modifications to a Phantom II throttle spring arrangement to resolve sluggish movement. | ||
| View original record | X7680 c. Es/Rm from Mx. Mx10/T9.5.33. THROTTLE SPRING P.II Referring to EB/HP26.4.33 and Hs/Rm1/ET29.4.33. With regard to the occasional trouble on Production Test of throttle movement being sluggish… | ||
| 04-page157 | Spring lengths and loads for a throttle and accelerator pedal assembly, part L.E.C.3412. | ||
| View original record | -2- Mx10/T9.5.33. (3) L.E.C.3412. as fitted up by Exp.Dept. with 1" lever. Spring length throttle closed 3.67" = 5½ lbs. " " open 5" = 12 lbs. This spring takes a permanent set if extended more than… | ||
| 04-page158 | Request to the No.1 Erecting Shop to loan a complete petrol supply system for a Phantom II to the Experimental Department. | ||
| View original record | x 7080 To Mr. Scott, (No.1 Erecting Shop). Hs/Std.3/KT.17.5.33. PHANTOM II. Will you please loan to the Experimental Dept., one complete petrol supply system as fitted to the latest production… | ||
| 04-page159 | Request to manufacture an adjustable air silencer for an 8 litre Phantom for experimental tests. | ||
| View original record | To RHC. from Hs/Rm. x 7080 Hs/Rm.3/KT.20.5.33. Attached is a drawing LeC.3494 showing the larger air silencer for the 8 litre Phantom. Will you please make one for test purposes. For our expl. tests… | ||
| 04-page160 | The inadequacy of the petrol supply for the 8-litre engine. | ||
| View original record | Y 7080 To E. from Hs/Rm. c.c. to Wor. c.c. to By. Hs/Rm.5/KT. 20.5.33. 8 LITRE ENGINE PETROL SUPPLY. We find that with the improved power output we are getting from the 8 litre engine, our petrol… | ||
| 04-page161 | Provisional specification document concerning resonance air silencers. | ||
| View original record | X 7080. To BY/NW. from ns/Rm. c. to E. Hs/Rn.2/KT.8.6.33. PROVISIONAL SPECIFICATION FOR RESONANCE AIR SILENCERS. We agree with the correction pointed out in E.1/HP.27.5.33. Hs/Rm. | ||
| 04-page162 | To slow the production of floats for semi-expanding Phantom carburetters due to a discovered issue. | ||
| View original record | x7080 To By. from Hs/Rm. Hs/Rm.4/KT.13.6.33. P.II. SEMI EXPANDING CARBURETTERS. Will you please go slow as far as possible with the production of floats for the semi expanding Phantom carburetters. We… | ||
| 04-page163 | Flooding issue with production carburetters and an urgent request for different floats for testing. | ||
| View original record | To RHC. from Hs/Rm. Hs/Rm.3/KT.13.6.33. We have discovered that production carburetters are liable to serious flooding. This can be overcome by lowering the level and fitting a lighter float. To… | ||
| 04-page164 | Production plans for carburettors, air silencers, and a new breather scheme for the Bentley. | ||
| View original record | x7080 To BY. from Hs/Rm. Hs/Rm. 2/KT.15.6.33. With reference to Sft.9/BH.12.6.33. We do not think it is necessary to hold up carburettors and air silencers any further with regard to working hand to… | ||
| 04-page165 | Modification to the Phantom II semi-expanding carburetter to prevent flooding on inclines. | ||
| View original record | X 7080 To E.) from Hs/Wyman " BY) & Hs/Swdl. c. to Slt. c. to EP. c. to Mx. Hs/Wymn.2/KT.30.6.33. PHANTOM II SEMI-EXPANDING CARBURRETTER. Trouble has been experienced on this type of carburetter with… | ||
| 04-page166 | Comparative test results for a new light float versus a standard float in a carburetter on Shardlow Road. | ||
| View original record | -3- Ha/Wynn.2/KT.30.6.33. COMPARATIVE TESTS WITH NEW LIGHT FLOAT IN CARBURETTER. SHARDLOW ROAD. STANDARD FLOAT 1.050" LEVEL. LIGHT FLOAT 1.375" LEVEL. 10-30 MPH. IN. OUT. 3.0 secs 3.5 secs 3.0 3.6 3.0… | ||
| 04-page167 | Power curve data for a Phantom II No.7 large bore unit with a semi-expanding carburettor at different float levels. | ||
| View original record | POWER CURVES ON P.II. NO.7 LARGE BORE UNI. WITH SEMI-EXPANDING CARB. Standard Float 1.050" Level - Barom. 753. R.P.M. | LOAD. | C/LOAD. | B.H.P. | B.M.E.P. | CONS. Pts/Hr. | Pts/BHP/Hr | Air Temp. |… | ||
| 04-page168 | Requesting a detail drawing for the air intake of a Large Phantom II Semi-Expanding Carburetter. | ||
| View original record | X7080 To BY. from E/JNR. E/JNR.2/HP.12.9.33. c. Hs. re Large Phantom 2 Semi-Expanding Carburetter. We send you herewith drawing: LeC.3494 shewing the air intake silencer for the large carburetter.… | ||
| 04-page169 | Request for parts to test a large Phantom carburettor and an urgent need for an air intake for the 27-EX French test. | ||
| View original record | X7050 RHC. From Hs/Swdl. Hs/Swdl.5/MA.14.9.33. Will you please have the following parts made in order to carry out tests on the large Phantom carburetter LeC.3432. V.1633 range of needle valves.… | ||
| 04-page170 | Requesting tests on a worm and wheel controlled throttle edge adjustment for a carburetter before production. | ||
| View original record | To RHC. From Hs/Swdl. Hs/Swdl.3/KT.19.9.33. In order to confirm its successful operation before going into production, we should like for test purposes a worm and wheel controlled throttle edge… | ||
| 04-page171 | Instructional memo for a new worm and wheel controlled throttle adjustment for a carburetter. | ||
| View original record | To Bf. From Hs/Swdl. Hs/Swdl.4/MJ.22.9.33. We have issued instructions to RHC. to make a worm and wheel controlled adjustment of the throttle edge slow runner, as shewn in the R.H.Scheme 1639 (Sch.2)… | ||
| 04-page172 | Instructions for a modified slow running adjustment scheme for a Phantom II carburetter. | ||
| View original record | x7080 To RIC c. Hs/Swdl. BY/CS6/EH.26.9.33. Re Phantom II Chassis - Carburetter - Section 5080. Modified Slow Running Adjustment Scheme 1639(Sch.2) for 2.3/8" Semi-Expanding Carburetter LeC.3432.… | ||
| 04-page173 | Blueprint alteration for the Phantom II Semi-Expanding Carburetter. | ||
| View original record | TOP-RMC c. Hs/Swdl. X7080. BY/CS2/N.27.9.33. Re: Phantom II - Semi-Expanding Carburetters - Sec:5080. Please receive herewith blueprints of the following drawing :- E.84062 - Barrel - Slow Running… | ||
| 04-page174 | Comparison curve for an old type carburetter and camshaft versus a new type, at the same compression ratio. | ||
| View original record | FILES. ------ 17080 6.11.33. ------ 17711 Curve Hs.1196 represents a comparison of the old type carburetter with old camshaft and the new type carburetter with new camshaft brought to the same… | ||
| 04-page175 | Development and testing report on the Phantom semi-expanding carburetter. | ||
| View original record | X 7080 TO Sg. From Hs/Dwdl. C. Hor. G.F. Hy. F.H. Ma. Hs/Dwdl.17/MT.6.11.32. X 7771 PHANTOM SEMI-EXPANDING CARBURETTER (Lec.3432). Development of this carburetter has been carried out on the 8 litre… | ||
| 04-page176 | Modifications and testing of a carburettor and air silencer system. | ||
| View original record | -2- He/Bwdl.17/KT.6.11.33. Running with the complete air silencer fitted it was found that the depression at the jet base was .4" H2O higher than in the stand pipe, so that other than there being no… | ||
| 04-page177 | Test results for a silencer under various configurations measuring BHP loss and back pressure at 3000 R.P.M. | ||
| View original record | -o- HE/Rmdl.17/KT.6.11.33. Loss. At 3000 R.P.M. Complete Silencer with gauze. 3.5 BHP - 2.6"Hg. " " " " with Vokes .050 3 BHP.- 2.6 " " " " " " " .075 4 BHP.- 2.65" " " " End cover removed. 3 BHP.-… | ||
| 04-page178 | Blueprint graph comparing power outputs for the 7.67 Litre Phantom II engine with an open exhaust. | ||
| View original record | 7.67 LITRE PHANTOM ② POWER COMPARISONS (OPEN EXHAUST) H.S. 1196 OLD TYPE IRON SYSTEM & 2 HORIZONTAL CARB WEIR MANIFOLD STD. 116° CAMSHAFT I.O. 13° PTDC E.O. 48° BBDC I.C. 46° PBDC E.C. 3° PTDC R.R.… | ||
| 04-page179 | Blueprint for a modification to a main jet sleeve. | ||
| View original record | V1650 4 HOLES DRILL .1719 DIA OTHER DIMENSIONS SEE (E83982) MOD'N TO MAIN JET SLEEVE (PH LEC 3432) ROLLS-ROYCE, LTD PRINT ROOM 7 NOV 1933 DERBY. 7-11-33 | ||
| 04-page180 | Blueprint detailing a modification to a Needle Valve for a Phantom Lec 31.32. | ||
| View original record | V1651 Dia at Large End .168 -1/2 TAPER 5°-12' INCLUDED Dia at Small End .070 -1 MOD'N TO NEEDLE VALVE (PHANTOM Lec 31.32) OTHER DIMENSIONS SEE (E.83974) ROLLS-ROYCE, LTD. PRINT ROOM 7 NOV 1933 DERBY.… | ||
| 04-page181 | Blueprint showing a modification to a carburetor body for a Phantom Legacy 3432. | ||
| View original record | V1652 MOD'N TO CARB BODY (PHANTOM LEG 3432) ALL OTHER DIMENSIONS SEE (E83947)(SECTION DD) .1378 DIA +2 1.300 ±10 ROLLS-ROYCE, LTD PRINT ROOM 7 NOV 1933 DERBY. 2-11-33 | ||
| 04-page182 | Performance graph from power tests of an 8.1 Litre Phantom engine, comparing various carburetor and component setups. | ||
| View original record | H.S. 1191 8.1 LITRE PHANTOM POWER TESTS (PH. NO. 2B) STANDARD CYLINDER HEAD (E.88758) - COMP. RATIO 5.6:1 CAMSHAFT (E.82448) - R.R. LEAD BRONZE BEARINGS LARGE SEMI-EXPANDING CARB (LEC 3922) (NO… | ||
| 04-page183 | Patent infringement with the Phantom II chassis carburetter's slow running device and the need to standardise a new design. | ||
| View original record | Rm Hg. M080 BY/Cgh.10/G.7.11.33. PHANTOM 11. CHASSIS - CARBURETTERS. With reference to the slow running device used on present production Phantom 11. chassis carburetters, which infringes the… | ||
| 04-page184 | Investigation and rectification of a valve gear and tappet noise complaint on a customer's car. | ||
| View original record | To Hs. 30.11.33. x2660 r6117 Re. 15-MY. JOLL ESQ. The above car was collected by me from Cricklewood on 20.11.33. and brought to Derby for investigation of valve gear noise, this apparently being a… | ||
| 04-page185 | Troubleshooting and rectifying issues with valve gear, tappets, and carburettor settings on a car. | ||
| View original record | -2- I told him that we had fitted a new set of valves, valve guides and rockers (we do not consider it advisable to inform him that we have fitted a new cyl. head complete) and that we were carrying… | ||
| 04-page186 | Modifications for Phantom II semi-expanding carburettors to resolve performance issues. | ||
| View original record | To Hd. From Hs/Wym. Hs/Wym.9/KT.1.12.33. P.II. SEMI EXPANDING CARBURETTERS. We would like you to issue a Depot Sheet to all concerned making clear the modifications necessary to cure the "flat spot"… | ||
| 04-page187 | Customer complaint regarding noisy valve gear and intermittent valve sticking on car 16-MY. | ||
| View original record | To C. from Hs. C. Sg. Wor. C. BY. EP. C. MX. Hd. C. Br. H. Hs.18/KT.1.12.33. Attached herewith is a report on 16-MY. This car has been returned to N. four times by the customer for noisy valve gear.… | ||
| 04-page188 | Investigation and rectification of a persistent valve gear noise in a customer's car, No. 10-MX. | ||
| View original record | To C, From Hx/Sym C.C. MS Ry. Ev. Br. H. RG/L MS/a RDT.* Hx* H.* Hs/Sym.15/K.1.12.35. No. 10-MX. JOLL. Esq. The above car was collected by me from Grimsdyewood on 26.11.35. and brought to Derby for… | ||
| 04-page189 | Diagnosing and rectifying engine trouble related to valves, tappets, and carburetter modifications. | ||
| View original record | -2- let us know the trouble had been cured. I told him that we had fitted a new set of valves, valve guides, and rockers (we do not consider it advisable to inform him that we have fitted a mother… | ||
| 04-page190 | Request to modify the carburetter from chassis 22-EX to the existing standard specification. | ||
| View original record | Mr. Rushwood From Hs/Whym. X2080 Hs/Whym.2/MA.10.1.34. Will you please modify carburetter off 22-EX. chassis and bring same up to existing standard specification. Order No. 54102. and oblige.… | ||
| 04-page191 | New throttle edge carburation scheme for the Phantom II. | ||
| View original record | Hs. X7080 Hs/Swdl.3/KW17.1.34. Throttle Edge Carburation (Phantom II). We have tested out the scheme whereby the throttle edge plug is controlled by worm and wheel adjustment, to details… | ||
| 04-page192 | Testing a new worm and wheel adjustment for throttle edge carburation on a 22-EX Car. | ||
| View original record | Hs: Hs/Wym.2/KW17.1.34. P.II. Throttle Edge Carburation. We have now tested out on 22-EX Car, the new type of worm and wheel adjustment for operating the slow running plug, to details… | ||
| 04-page193 | Faulty slow running in the Phantom II carburation after a hard run and potential solutions. | ||
| View original record | X7080 Hs C.L. BY Wor re PHANTOM II CARBURATION ----------------------- In our acceptance tests of Phantom II chassis we have raised objections to the faulty slow running when pulling up after a hard… | ||
| 04-page194 | Issue and subsequent modification for the Phantom II Starting Carburetter Control. | ||
| View original record | To E. from Hs/Wym. c. to BY. X72802 Hs/Wym. 4/KW. 31.1.34. P.II Starting Carburetter Control. We have recently had cause to complain of the starting carburetter control on the instrument board not… | ||
| 04-page195 | Modification to the starting carburetter control to prevent unwanted movement from its closed position. | ||
| View original record | #iles E.By / #WYNN Hs/Wym.12/KW.27.1.34. P.II Starting Carburetter Control. We have recently had cause to complain of the starting carburetter control on the instrument board not remaining in its… | ||
| 04-page196 | Blueprint detailing an external oil control linkage mechanism. | ||
| View original record | EXTN OIL CONTROL, HS 1290, ROLLS-ROYCE LTD, PRINT ROOM, JAN 31 1934, DERBY, CLOSES, OPEN, 87.5° CRS, G.S. Brown | ||
| 04-page197 | Complaint and modifications for the starting carburetter control on Phantom II cars. | ||
| View original record | X7280 To BY. from E/Lid. c. Hs. E/Lid.1/HP.31.1.34. P.II - Starting Carburetter Control. With reference to Hs/Wym.4/KW.31.1.34 dealing with the complaint of the starting carburetter control working… | ||
| 04-page198 | Modification to the Phantom II Starting Carburetter Control. | ||
| View original record | To E. from Hs/Wym. c. to By. c. to Wor. X 7280 Hs/Wym.10/KW.1.3.34. Re. Ph.II Starting Carburetter Control. We have now fitted up on 22-EX a scheme to LEC.3775 for preventing the starting carburetter… | ||
| 04-page199 | Standardisation of parts for a Phantom II starting carburetter control. | ||
| View original record | RR 755 (SH) (52674, 16-10-33) BM. S/262/c. COMPLETED 10.4.34. 4Q/50 STANDARDISATION of PARTS. Date 1.3.34. Description of Parts. P.II STARTING CARBURETTER CONTROL. SCHEME TO LEC:3775. Origin. Scheme… | ||
| 04-page200 | List of modifications required for the Phantom II Semi-Expanding Carburetter to make it suitable for production. | ||
| View original record | By: X7080 Hs/Swdl.24/KW.25.7.34. Phantom II Semi-Expanding Carburetter, LeC.3432. In order to bring this carburetter (LOP.84000) up to date and suitable for production, the following modifications are… | ||
| 04-page201 | Standardisation of an enlarged semi-expanding carburetter. | ||
| View original record | RR 755 (SH) (57312. 29-12-33) BM 3/640/2 COMPLETED 18.10.34. 40/50 STANDARDISATION of PARTS. Date: 27-9-34 X No. 7080. Drawing No. Part List. Description of Parts: SEMI-EXPANDING CARBURETTER ENLARGED.… | ||
| 04-page202 | Cost estimate for extra jigs, tools, and equipment for the 'T' series chassis. | ||
| View original record | STANDARDISATION OF PARTS Est. cost of extra jigs, tools and equipment (Sft/Ws.3.9.34) £227.0.0. Already instructed for 51st chassis in "T" series. | ||
| 04-page203 | Oil intake issue on the Phantom II carburetter and a proposed rocker cover replacement. | ||
| View original record | To E. c. to By. Phantom II. In conjunction with the large semi-expanding carburetter (LOP.E.84480) trouble has been experienced in that oil is drawn from the rocker cover (E.84131) into the air… | ||
| 04-page204 | On two unsatisfactory features of a larger choke carburetter fitted to a Phantom II 'T2' series chassis. | ||
| View original record | [Handwritten: x7080] [Handwritten: Rm] c.Hs. from Mx Mx17/T5.2.35. PHANTOM II. 51st. CHASSIS IN "T2" SERIES. LARGER CHOKE CARBURETTER. There are two features in connection with the above which are… | ||
| 04-page205 | Request to fit a rocker cover with a breather to chassis 28-EX for a Phantom II. | ||
| View original record | To RHC. +7050. Hs/GWH.16/KW.14.2.35. Phantom II - Larger Choke Carburetter. Will you please fit up a rocker cover with breather, to RR.Sch.S25, for fitting to 28-EX. Hs/G.W.Hancock. Att: Copy of… | ||
| 04-page206 | Modifications for the Phantom II larger choke carburetter, including the rocker cover baffle and throttle closing spring. | ||
| View original record | Rm c. Hs. c. EY/CS. 4308D BY/Cgh.9/G.8.2.35. PHANTOM 11 - LARGER CHOKE CARBURETTER. With reference to Mx.17/T.5.2.35. the modified rocker cover with improved type of baffle has been instructed for… | ||
| 04-page207 | Investigations into carburetter flat spots on the 40/50 HP model. | ||
| View original record | S/W. Rem x708 H14/H29.4.35. RE: 40/50 H.P. Carburetters and flat spots. After reading your Hs/Wyn16/KW24.4.35. - C. has asked me to advise you how greatly interested we are to learn of the… | ||