Rolls-Royce Archives

Rolls-Royce Experimental Archives: Box ExFiles\Box 110\1\        Box Selection

IdentifierEntry
scan0001 Martindale's recommendations for 'Myth' brakes, specifically the hand brake placement.
View original record To Ev. from Rm. 1033 706 Rm's policy Rm.6/JH.9.10.39. Herewith Martindale's recommendations with regard to Myth brakes which I will discuss with you. The hand brake must go on the dash. We cannot…

scan0002 Suggested specification for a 28 cwt. car's braking system.
View original record COPY. As from - 11, Manor Place, Oxford. My suggested specification for your 28 cwt. car is as follows :- Brake Drums - 10 1/4" internal dia. Linings - 1/4" thick 2 1/4 wide. Front brakes - Girling 2…

scan0003 Brake design, comparing internal vs external wheel cylinders and outlining reasons against a hydraulic system.
View original record -2- "Sufficient for the day", however and we can deal with this problem later. But design for 2 1/4 wide, the narrower one will easily go in. What I mean about surface temperature is that we have…

scan0004 Effectiveness, potential issues, and leverage ratios of a brake design.
View original record -3- I advise using the standard set up and change to this after development. I don't think the cost difference is material. I think these brakes will be about 2/3 as effective as those on B.V. The big…

scan0005 Secret memorandum discussing the requirements and specifications for hydraulic brakes on the 'Myth' project.
View original record SECRET. 706 Rm/Rigby from Ev. c. to Rm. c. to Rm/FJH. c. to Rm/EAG. c. to Ev/DB. Ev.2/JH.3.9.40. re Hydraulic brakes - Myth. As requested by Rm. we are contacting you on the question of hydraulic…

scan0006 Secret internal memorandum regarding the hydraulic brake specifications for the 'Myth' project.
View original record SECRET. Rm/Rigby from Ev. c. to Rm. c. to Rm/FJH. c. to Rm/EAG. c. to Ev/DB. re Hydraulic brakes - Myth. As requested by Rm. we are contacting you on the question of hydraulic brakes for Myth. It is…

scan0007 Calculations and specifications for 'Myth' hydraulic brakes.
View original record 706 To Ev. from Rm/MHR. Rm/MHR.2/ET.6.9.40. MYTH HYDRAULIC BRAKES. ==================== With regard to shoe dimensions, the projected sizes of 10.0 ins. diameter and 1.5 ins. wide, assuming a lining…

scan0008 File note referencing correspondence with Automotive Products Coy about Rippletto and Myth Cars.
View original record 1030 706 For correspondence with the AUTOMOTIVE PRODUCTS Coy re Rippletto and Myth Cars, see File 1029, re "Brakes". ****** Oct. 1940

scan0009 Extract detailing calculations for drum and shoe sizes for Lockheed Hydraulic Brakes on the MYTH vehicle.
View original record 1030 706 EXTRACT FROM Ev4/JH.13.9.40 re Lockheed Hydraulic Brakes. .................. .................. MYTH. It was agreed that MYTH should have the same hydraulic equipment as Rippletto and the…

scan0010 Cover note for an attached letter from Mr. Parnell of Lockheed's.
View original record Ev. from Rm/ML. Rm/ML.1/19.9.40. file 1029 put note for reference in Myth file Rm. has requested me to send you a copy of a letter we have received from Mr. Parnell, of Lockheed's. This is attached.…

scan0011 Copy of a letter from Lockheed's (Automotive Products Company Ltd.) regarding modifications to a brake system.
View original record COPY OF A LETTER RECEIVED FROM LOCKHEED'S. PS/FGP/HMR. 16th. September. 1940. Messrs Rolls Royce Ltd., DERBY. For the attention of Mr. W.A.Robotham. Dear Sirs, In reply to your two letters of the…

scan0012 Specifications and calculations for Myth Lockheed hydraulic brakes.
View original record 1030 706 To Rm. Ev.1/JH.25.9.40. re Myth Lockheed Hydraulic Brakes. Many thanks for Rm.10/ML.21.9.40. The figures quoted for the Myth hydraulic brakes in Ev.4/JH.13.9.40. assume a line pressure of 915…

scan0013 Letter from Automotive Products Company Ltd regarding a proposed Tandem Master Cylinder for Repletto and Myth cars.
View original record THE BRITISH MADE LOCKHEED HYDRAULIC BRAKING SYSTEM Controllers of European Rights Automotive Products Company Ltd Tachbrook Road, Leamington Spa. DIRECTORS: E. B. BOUGHTON W. EMMOTT D. T. BROCK…

scan0014 Drawing of a 1 inch Tandem Master Cylinder, 'C.B' type.
View original record FORM D.41 F = GOOD FINISH O = ROUGH G = GROUND. ⊕ = MACHINE ALL OVER. LIMITS UNLESS OTHERWISE STATED. CASTINGS & STEEL STAMPINGS ± 1/32 BRASS STAMPINGS ± .010" SOFT ALLOY DIE CASTINGS ± .005" PRESSING…

scan0015 Letter to Automotive Products Ltd. regarding the 'Rippletto and Myth' cars, acknowledging receipt of a letter and drawing.
View original record 1030 See also 1027 File Myth - Brakes notes in and Rippletto 706 Rm.11/ML. 2.10.40. F.G.Parnell,Esq., Automotive Products Ltd., Tachbrook Road, LEAMINGTON SPA. Dear Mr. Parnell, RIPPLETTO AND MYTH…

scan0016 Cover note for a letter to Lockheed, its answer, and a lent drawing.
View original record Rm 11/ML 2.10.40 Letter to Lockheed and answer with drawing lent to EV/DB 7069

scan0017 Analysis and proposal for the brake system on the 'Myth' class vehicle.
View original record 1030 To Rm. from Ev. c.c. to Rm/FJH. c.c. to Rm/MHR. c.c. to Ev/DB. Ev.1/JH.25.10.40. H/A 706 re Brakes for Myth. The question of the brakes for Myth has been analysed by Ev. and Ev/DB. It is accepted…

scan0018 Analysis of braking system modifications for the 'Myth' model, discussing servos and cylinder sizes.
View original record -2- Ev.1/JH.25.10.40. wrapping shoe is not possible and the two non-wrapping shoes are prohibited with existing master and wheel cylinders. The pipe line pressure fixed could be restored by using an…

scan0019 Schematic diagram of a servo-assisted hydraulic brake system.
View original record TO FRONT BRAKES MASTER CYLINDER TO REAR BRAKES R-R. SERVO-ASSISTED HYDRAULIC BRAKES 29/10/40

scan0020 Brake system options for the 'Myth' class vehicle, including Lockheed hydraulics and a proposed servo system.
View original record To Rm. from Ev. c. to Rm/PJH. c. to Rm/MHR. c. to Ev/DB. re Brakes for Myth. The question of the brakes for Myth has been analysed by Ev. and Ev/DB. It is accepted that we shall have Lockheed…

scan0021 Analysis of brake system options, including servos and cylinder sizes, for the 'Myth' model car.
View original record -2- Ev.1/JH.25.10.40. wrapping shoe is not possible and the two non-wrapping shoes are prohibited with existing master and wheel cylinders. The pipe line pressure fixed could be restored by using an…

scan0022 Hand-drawn diagram illustrating a servo-assisted hydraulic braking system.
View original record To FRONT BRAKES MASTER CYLINDER TO REAR BRAKES R-R. SERVO-ASSISTED HYDRAULIC BRAKES 24/10/40

scan0023 Weight of 'Myth' brake components and comparing them with Lockheed parts.
View original record 1030 To Rm/GB. c. to Rm. c. to Ev. Ev/DB.2/JH.28.10.40. 706 Weight of Myth Brakes. The weight of the carrier plates, cylinder and shoe assemblies quoted in Rm/GB.1/ET.20.10.40. and referred to in…

scan0024 Typed memorandum concluding with a statement on a water exclusion system and the accuracy of provided figures.
View original record -2- Ev/DB.2/JH.28.10.40. addition they have a better system of water exclusion. These figures in the table given above are approximate only but can be regarded as fairly accurate. Ev/DB.

scan0025 Letter to Automotive Products Company Ltd. regarding two leading shoe brakes and the supply of a proposed drum.
View original record 1030 Copy in 1029 Brake EXPERIMENTAL DEPARTMENT. Rm.8/ET. 5th November, 1940. 706 Automotive Products Company Ltd., Tachbrook Road, LEAMINGTON SPA. For the attention of Mr. F.G. Parnell. Dear Sirs, We…

scan0026 Letter to Stainless Spinning Works regarding experimental spring plates and a request for design specifications.
View original record 1030 EXPERIMENTAL DEPARTMENT. Rm/MHR.2/ET. 5th November, 1940. 706 STAINLESS SPINNING WORKS, 182, Miller Street, BIRMINGHAM. For the attention of Mr. Blake. Dear Sirs, We thank you for the twelve…

scan0027 Letter to Automotive Products Co. regarding a dimensional change on a brake component and its subsequent impact on other parts.
View original record 1090 9th December, 1940. 706 Ev./DB.2/ET. Automotive Products Co., Ltd., Tachbrook Road, LEAMINGTON SPA, Warwickshire. Attention of Mr. F.G. Parnell. Dear Sirs, We have just noticed that on the latest…

scan0028 Letter to Stainless Spinning Works regarding a cost increase on experimental spring plates and seeking alternative manufacturing advice.
View original record 1030 NOT MYTH! 706 Rm/MHR.3/ST. EXPERIMENTAL DEPARTMENT. 3rd December, 1940. STAINLESS SPINNING WORKS, 182, Miller Street, BIRMINGHAM. For the attention of Mr. Blake. Dear Sirs, In our letter of 5th…

scan0029 Design and components of the hand brake linkage for the 'Myth' project.
View original record To Rm. from Ev/DB. Copy to Rm/HH. & Ev. myth 706 EV/DB.3/ET.4.1.41. 1080 MYTH HAND BRAKE LINKAGE. ----------------------- PL.439 attached shows the rear part of the hand brake linkage on Myth, i.e.…

scan0030 Design and function of the Myth hand brake linkage, specifically the rear idler lever and equaliser.
View original record 1030 706 To Rm: from Ev/DB. Copy to Rm/HH. & Ev. Ev/DB.3/ET.4.1.41. MYTH HAND BRAKE LINKAGE. ------------------------- PL.439 attached shows the rear part of the hand brake linkage on Myth, i.e. the…

scan0031 Design of the brake and clutch pedals for the Myth chassis.
View original record To Rm. from Ev/JD. c. to Ev. c. to Rm/HH. c. to Rm/EAG. 706 1080 Ev/JD.4/SW.24.1.41. MYTH. P E D A L S. PL.445 - Pedals, Brake & Clutch. We attach to Rm/HH's copy the original of the above scheme…

scan0032 Letter to Automotive Products Co. regarding prints of schemes for a master cylinder and handbrake operation for Myth brakes.
View original record 706 1030 c. Hr. c. Rm. EV/DB.1/RH. 11th February, 1941. Automotive Products Co., Ltd., Tachbrook Road, LEAMINGTON SPA. For the Attention of Mr. F.G. Parnell. Dear Sirs, As arranged some time ago, I am…

scan0033 The addition of a brake pedal pull-off spring and modification of the clutch operating spring to commonise them.
View original record 706 1030 To Rm. from Ev/JD. c. to Ev. c. to Rm/HH. Ev/JD.7/SW.28.2.41. MYTH. P E D A L S. We attach to Rm/HH's copy the original of :- PL.510 - Brake Pedal Pull-off spring. At Lockheed's request, we…

scan0034 Drawings for brake drum liners and brake drums for the Experimental Car Senior Range.
View original record To Rm. from Rm/HH. c.c. to Rm/MHR. [Handwritten] NOT MYTH Z06 [Handwritten] 1030 Rm/HH.1/SW.5.3.41. Experimental Car. Senior Range. Front Hubs - Sec.7044. Rear Hubs - Sec.6170. Further to our memo…

scan0035 Letter to Automotive Products Co., Ltd. regarding the supply of drawings for 'Myth' brakes and a pull-off spring for the brake pedal.
View original record 1030 7406 Copy to Rm. & Ev. 6th March, 1941. Ev/DB.5/ET. Automotive Products Co., Ltd., Tachbrook Road, LEAMINGTON SPA, Warwickshire. For the attention of Mr. F.G. Farrell. Dear Sirs, We thank you for…

scan0036 Letter to Automotive Products Co., Ltd. regarding the supply of brake drums and enclosing drawings for 'Myth' brakes.
View original record Handwritten Note Top Left: Rm Can anything be done about getting these drums made? If we could supply drums complete with wheel bolts & nuts, these could be used to drive the drums & test on Copy to…

scan0037 Listing parts required for one front and rear drum assembly.
View original record Pin Parts required for 1 front & rear drum are: RG 2212 Front drum hub. 1 off. RG 2207 Rear drum hub. 1 off. RG 2210 Bolt, RH. 10 off. RG 2211 Nut, RH. 10 off. The bolts are the wheel securing bolts &…

scan0038 Handbrake position and lever design for the 'Myth' model.
View original record To Rm. from Ev/DB. Copy to Rm/HH. (crossed out) Ev. (crossed out) Rm/EAG. (crossed out) 706 1030 Ev/DB.4/ET.28.3.41. HANDBRAKE - MYTH PL.504, theoriginal of which is attached to Rm/HH's copy, shows…

scan0039 Handbrake design and position for the 'Myth' project, referencing drawings PL.450 and PL.504.
View original record To Rm. from Ev/DB. Copy to Rm/HH. Ev. 706. 1030 Ev/DB.3/ET.28.3.41. HANDBRAKE - MYTH ---------------- PL.450, the original of which is attached to Rm/HH's copy, shows the forward position of handbrake…

scan0040 Handbrake position for the 'Myth' vehicle.
View original record To Rm. from Ev/LB. Copy to Rm/Hil. Ev. Rm/EAG. 706 1080 Ev/LB.4/MT.28.3.41. HANDBRAKE - MYTH FL.504, the original of which is attached to Rm/HH's copy, shows the handbrake for Myth in the position…

scan0041 Handbrake position for the 'Myth' project, referencing drawing PL.430.
View original record 706 1030 To Em. from Ev/DB. Copy to Rm/HH. Ev. Ev/DB.3/ET.28.3.41. HANDBRAKE - MYTH -------------- PL.430, the original of which is attached to Rm/HH's copy, shows the forward position of handbrake…

scan0042 List of parts and drawing numbers for the M.40 Test Rig, focusing on the pedal assemblies and frame fittings.
View original record 406 To Rm. from Rm/HH. c.c. [struck through] EB/NV. c.c. [struck through] -SW/WB. Rm/HH.6/SW.16.4.41. M.40 Test Rig. PL.445 - Brake & Clutch Pedals PL.510 - Brake Pedal Pull-off Spring PL.516 -…

scan0043 Parts list for brake and accelerator pedals, and associated components, continuing section 7100.
View original record -cont'd- - 2 - Rm/HH.6/SW.16.4.41. Sec.7100 (cont). RF.2281 Brake Pedal Spring 1 Off RF.2335 Pedal Holder - brake 1 " RF.2336 Assembly of Pedal Plate - brake 1 " RF.2353 Accelerator Pedal Lever 1 "…

scan0044 New parts and required standard parts for the M.40 Test Rig, focusing on the handbrake lever and frame fittings.
View original record To Rm. from Rm/HH. c. To EV/JD. 706 Rm/HH.8/SW.18.4.41. M.40 Test Rig. PL.504 - Handbrake Lever & Mechanism PL.521 - R.H. Centre Gusset. PL.526 - L.H. Centre Gusset. Sec.7000 - Frame & Fittings. The…

scan0045 Parts list for the M.40 Test Rig, detailing the Handbrake Lever & Mechanism.
View original record 406 To Rm. from Rm/HH. c. to Ev. c. to Ev/JD. Rm/HH.5/SW.28.6.41. M.40 Test Rig. PL.504 - Handbrake Lever & Mechanism. Section 6081. The following pieces have been detailed in accordance with the…

scan0046 List of parts, including those supplied by Bowden Engineering Co., with instructions for a work scheme.
View original record -cont'd- - 2 - RG.2470 Bearing Bush 2 Off * RG.2471 Spring - Handbrake Pawl 1 " RG.2473 Dist. Piece - Brake Rack 2 " RG.2475 Brake Rod 1 " RG.2605 Dist. Tube - Brake Lever 1 " RG.2606 Stiffening Plate…

scan0047 Parts and instructions for the M.40 Test Rig, section 6170, concerning the Rear Hub.
View original record To HPS. from Rm/HH. c. Rm. Ev. Ev/JD. Rm/HH.1/RH.2.7.41. 706 M.40 Test Rig - Section 6170. PL.372 Rear Brakes and Axle. PL.378 Front Brakes and Pivot Rear Hub. Please find herewith two prints of…

scan0048 Letter from Bowden (Engineers) Ltd. regarding supply difficulties for assemblies due to wartime production priorities.
View original record ORIGINAL PATENTEES AND MANUFACTURERS OF BOWDEN WIRE MECHANISM AND FITTINGS. TELEPHONE: WILLESDEN 2400, THREE LINES. CODES: A.B.C. 5TH EDITION, MASTER, BENTLEYS. CONTRACTORS TO H. M. ADMIRALTY, H. M.…

scan0049 Letter from Automotive Products Company regarding the development of a Master Cylinder and brake parts.
View original record Brake File 706 AUTOMOTIVE PRODUCTS COMPANY LTD European Distributors & Spares Depots for: HERCULES ENGINES TIMKEN AXLES "LOCKHEED" HYDRAULIC BRAKES FULLER TRANSMISSIONS BORG & BECK CLUTCHES…

scan0050 Page 2 of a letter from Automotive Products Company Limited discussing a 1' Tandem Master Cylinder.
View original record Messrs. Rolls-Royce, Ltd., -2- 9th July, 1941. We have also made up a 1" Tandem Master Cylinder required on this job and have carried out very extensive stroking tests with satisfactory results. The…

scan0051 Request to Automotive Products, Ltd. for drawings of brake shoes, pull-off springs, and liners for the 'Myth' project.
View original record Copies to :- Rm. Ev. Rm/HH. 706 Ev/DB.11/SW. 10th July, 1941. Automotive Products, Ltd., Tachbrook Road, Leamington Spa. For the attention of Mr. F.G. Parnell. Dear Sirs, We should be obliged if you…

scan0052 Requesting the expediting of parts for 'Myth Brakes' assemblies sent to Lockheed's for testing.
View original record 706 To Rm/HH. from Rm/MHR. c. to Rm. Rm/MHR.14/SW.10.7.41. Myth Brakes. As we are anxious to sent two brake drum assemblies, one front and one rear, to Lockheed's for testing, could the following…

scan0053 Parts required for a Test Rig, specifically the Front Hub assembly and associated components.
View original record To HS. from Rm/HH. c.c. to Rm. c.c. to SW. c.c. to Ev/JD. c.c. to Rm/GB. 706 Rm/HH.7/SW.11.7.41. M.40 - Test Rig. PL.378 - Front Brakes and Axle Pivots Front Hub - Section 7044. Please receive…

scan0054 Production of M.40 Test Rig handbrake parts due to supply issues from Bowden Engineering Co.
View original record To H.S. from Rm/HH. c. to Rm. 706 Rm/HH.1/SW.15.7.41. M.40. Test Rig. Hand Brake - Sec. 6081. Further to our memo reference Rm/HH.3/RH.30.6.41., in view of our being unable to obtain the following…

scan0055 Letter to the Lockheed Hydraulic Brake Co. regarding an order for 'Myth Brakes' and discussion on lining materials.
View original record 706 EXPERIMENTAL DEPARTMENT 22nd August, 1941. Rm/MHR.2/RH. The Lockheed Hydraulic Brake Co., Ltd., Tachbrook Road, LEAMINGTON SPA. Attention of Mr.F.Parnell. Dear Sirs, We have today instructed our…

scan0056 Letter from Automotive Products Company concerning an order for brake equipment for the 'Myth' car and advising against a specific brake spider design.
View original record 706 Brake File AUTOMOTIVE PRODUCTS COMPANY LTD European Distributors & Spares Depots for: HERCULES ENGINES TIMKEN AXLES "LOCKHEED" HYDRAULIC BRAKES FULLER TRANSMISSIONS BORG & BECK CLUTCHES…

scan0057 Letter discussing brake lining performance, testing procedures, and the supply of aluminium castings.
View original record W. A. Robotham, Esq., -2- 29th August, 1941. I should also like to refer to Mr. Rigby's letter of the 22nd August, in which he suggests fitting a Lining having a co-efficient of about .26. I feel sure…

scan0058 Letter to Automotive Products Co., Ltd. regarding equipment sets, a back plate design, and arranging a visit.
View original record CAR 706 31st August, 1931. Rm.2/ST. Automotive Products Co., Ltd., Tachbrook Road, LEAMINGTON SPA. Attention of Mr. Parnell. Dear Mr. Parnell, Thank you for your letter of 29th August. With regard to…

scan0059 Letter from Parnell of Lockheed's and the subsequent reply.
View original record To Rm/MHR. from Rm. Copy to Ev. [Handwritten in red pencil]: Chassis [Handwritten in pencil]: 1029 [crossed out] 706 Rm.3/ST.31.8.41. Here is a letter from Parnell of Lockheed's. Please discuss it…

scan0060 Letter to Automotive Products Co. Ltd. regarding 'Myth' brakes and a brake carrier plate.
View original record c. to Rm. Ev. Rm/MHR. BQR 706 Ev/DB.14/JH. 1st. September, 1941. Automotive Products Co.Ltd., Tachbrook Road, Leamington Spa. For the attention of Mr. F.G. Parnell. Dear Sirs, Further to your letter…

scan0061 Stiffened front brake carrier plate for the 'Myth' project, discussing test failures and supply arrangements with Lockheed.
View original record 706. To Rm. from Ev/DB. c. to Ev. [Struck through] c. to Rm/HH. [Struck through] Ev/DB.1/JH.15.9.41. Stiffened front brake carrier plate. Myth. PL.836, the original of which is attached to Rm/HH's.…

scan0062 Letter to Automotive Products Co. Ltd. discussing drawings and requesting details for brake drums and other components.
View original record c. to Rm. Ev. CAR 706. EV/DB.2/JH. 15th. September, 1941. Automotive Products Co.Ltd., Tachbrook Road, Leamington Spa. For the attention of Mr. F.G. Parnell. Dear Sirs, Enclosed are some notes…

scan0063 Confirming telephoned instructions to the Iron Foundry regarding the production of cast iron rings for brake drums.
View original record To: Mr.Knagg, Iron Foundry. c. Mr.Wheeler. Mr. Peak. Rm/MHR.2/RH.22.9.41. 706. This is to confirm that the original 12 cast iron rings RG.2599 for use with the wider type of alum. brake drum RG.2598,…

scan0064 Change to the brake drums for the 'Myth' project to use standard Lockheed carrier plates.
View original record To Rm. from Ev/DB. (Struck through: o/c to Rm/HH. Ev.) 706 Ev/DB.10/JH.15.10.41. Brake Drums - Myth. It was arranged with Mr. Parnell of Lockheeds a short time ago that the first Myth should have…

scan0065 Delay in receiving M.40 test rig parts from Lockheeds.
View original record To Roy/AES. from Rm/MHR. 706 10000 Rm/MHR.2/ET.24.3.42. M.40 - TEST RIG. ----------------- We have not yet received the first set of M.40 parts from Lockheeds, and as we are not in a position to use…

scan0066 Carburettor options for the Myth engine, induction systems, and the procurement of a by-pass filter.
View original record Rm/CTS. from Rm. File my Chs Rm.5/JMS/24.7.40. 108 Will you please look into the question of a carburetter for the Myth engine. For everything except consumption I favour a horizontal S.U. and maybe…

scan0067 Drawings for the Crank & Camshaft Layout.
View original record 1030 To Rm. from Rm/HH. C.C. EH. C.C. Rm/DHS. Rm/HH.2/SW.13.11.40. 707 Myth M.40. Camshaft - Sec.5090. PL.316 Crank & Camshaft Layout. The following drawings have been detailed from the above scheme…

scan0068 Use of cast-iron camshafts on the 'Myth' project based on information in the I.A.E. Journal.
View original record 100H myth Jnr. Rm.6/ML.5.3.40. 707 I see in the last month's issue of the I.A.E. Journal, there is a considerable amount of information on gears on cast-iron camshafts. If possible, we do want to be…

scan0069 Confirming the agreed specifications for the 'Myth' camshaft.
View original record Rm/TAS. from Rm. c. Rm/CTS. 7.07 1030 Rm.9/ML.8.3.41. MYTH CAMSHAFT. Confirming our conversation re the first camshaft for the Myth. We have agreed that the first inlet cam shall have a duration of…

scan0070 Specifications and design of 'Myth' cam forms, PL.534 and PL.535.
View original record 1080 707 To Rm. from Ev/JD. c. to Ev. c. to Rm/HH. c. to Rm/OTS. Ev/JD.1/SW.22.4.41. Myth Cam Forms. We attach to Rm/HH's copy the originals of the Myth cam forms, PL.534 and PL.535. PL.534 shows an…

scan0071 Camshaft specifications, materials, and supplier issues.
View original record -cont'd- - 2 - Ev/JD.1/SW.22.4.41. acceleration and the different inlet toe this gives a slightly greater overlap leakage between the valves at running clearance than 18½° on the B.60 camshaft…

scan0072 Camshaft prints for the M.40 Test Rig, discussing the preference for Monikrom material over S/ZN.
View original record 707 To. Mr. Knegg (Iron Fdry) c.c. to HPS. c.c. to Rm. Rm/HH.1/SW.19.5.41. M.40. Test Rig. We are attaching herewith the following prints of camshafts in connection with the above project :- RE.2422…

scan0073 General information on camshafts, including acceleration, deceleration, and tappet velocity data for various engines.
View original record To Rm. from Rm/TAS. Copy to Jnr. Rm/CTS. Myth file GENERAL INFORMATION ON CAMSHAFTS 707 A - MAX. ACCELERATION AND DECELERATION. DIVIDE ALL ACCELERATIONS BY 4 in feet/sec² @ 1000 R.P.M. Engine Unit |…

scan0074 Analysis of cam loading and valve gear performance for various engine designs.
View original record Rm/TAS.6/ET.26.5.41. 2. A. If the acceleration figures illustrated are to be thought of in terms of maximum loading of the cam, they do not mean very much without an accurate analysis of the valve…

scan0075 Investigation into the effect of a clutch disc on transmission rattle for chassis B.22.AW.
View original record To Rm. From Rm/GB. Copy to Rm/wym. Hs/PJH. EFFECT OF CLUTCH DISC ON TRANSMISSION RATTLE ON LP.'s B.V (Chassis No. B.22.AW) -------------------------------- This car suffered from transmission rattle…

scan0076 Design of the clutch actuation mechanism for the 'Myth' model, comparing it to the Senior Range.
View original record 1030 To Rm. from Ev/JD. c. to Mr. c. to Rm/HH. Ev/JD.3/SW.4.2.41. 712 MYTH. Clutch Actuation. We attach to Rm/HH's copy the original of :- PL.503 - Clutch Actuation. The above scheme shows the clutch…

scan0077 Clutch modification involving a print for the bottom cover and felt seal, which modifies a previous scheme.
View original record To Rm. from Rm/HH. c. to Ev. c. to Ev/JD. 712. Rm/HH.7/SW.28.3.41. M.40. CLUTCH. Herewith print of PL.520 showing modification to Bottom Cover and Felt Seal. Above scheme modifies PL.355. Rm/HH.…

scan0078 List of parts for the Flywheel & Clutch section of the M.40 Test Rig.
View original record 712 To Rm. from Rm/HH. c. to Ev. c. to Ev/JD. Rm/HH.2/SW.9.4.41. M.40 Test Rig. Flywheel & Clutch - Sec.6000. The following pieces have been detailed in accordance with PL.335 and PL.503, and an LOP.…

scan0079 Parts list and instruction for the M.40 Test Rig, detailing components for the PL.355 Flywheel Clutch and PL.503 Clutch Actuation.
View original record To. HFS. c. Rm. c. Rm/OTS c. Ev. c. Ev/JD. 712 1030 Rm/HH.4/WLL. 30. 4. 41. M.40 Test Rig. PL.355 Flywheel Clutch & Clutch Casing. PL.503 Clutch Actuation. Please receive herewith 2 blueprints of each…

scan0080 Parts and prints for the M.40 Test Rig Flywheel and Clutch assembly.
View original record 712 To H.S. from Rm/HH. c. to Rm. Rm/HH.11/SW.27.6.41. M.40 Test Rig. Sec.6000 - Flywheel & Clutch. PL.355 - Flywheel, Clutch and Clutch Casing. PL.503 - Clutch Actuation. We confirm having sent you…

scan0081 Parts list for a clutch assembly and its associated components.
View original record _cont'd_ - 2 - Rm/HH.11/SW.27.6.41. RG.2312 Retaining Ring. RG.2314 Dowel. RG.2316 7¼ A3-G Clutch (Yellow Springs) Note RG.2316 - Clutch unit is in the Stores at Derby. This completes the instructions…

scan0082 Sending a preliminary print of the crankshaft detail RE.1648 for approval or criticism.
View original record 1030 file myth 717 To Jas. from Rm/HH. c. Rm. Rm/HH.5/SW.30.9.40. Myth. Sec.5010 - Crankshaft. For your approval or criticism, we are sending herewith a preliminary print of the crankshaft detail…

scan0083 Schemes and drawings for the Myth M.40 Crankshaft, section 5010.
View original record To Rm. from Rm/HH. c.c. Hives. c.c. Rm/GBS. Rm/HH.1/SW.13.11.40. Myth M.40. Crankshaft Sec.5010. PL.334 Wheelcase & Triangular Drive. PL.335 Fan & Gear Drive - Camshaft. PL.316 Crankshaft Layout. The…

scan0084 Revised prints for an M.40 Test Rig Cylinder.
View original record 719 To HPS. from Rm/HH. c. to Rm. c. to Rm/OTS. Rm/HH.2/SW.12.5.41. M.40 Test Rig. Cylinder - Sec.5050. In accordance with HPS/WCS.1/AW. 1.5.41., we send you herewith three revised prints of RE.1928…

scan0085 Transmittal memo listing new and altered blueprints for the M.40 Test Rig, specifically for the crankcase and cylinders.
View original record To HPS. from Rm/HH. c. to Rm. c. to Rm/GTS. c. to RV. c. to RV/JD. 3 719 Rm/HH.4/SW.21.4.41. M.40 Test Rig. Sec.5000 - C'case & Cylinders. Please receive herewith blueprints of the following new…

scan0086 List of engine components with part numbers, marking the completion of Section 5000.
View original record -cont'd- - 2 - Rm/HH.4/SW.21.4.41. RE.1875 Valve Guide (Exhaust) 304/RE. RE.1815 Cap - water gallery 262/RE. RE.1633 Joint - exhaust manifold 300/RE. RE.1900 Valve Guide Pin 285/RE. RE.1817 Water…

scan0087 Alternative cylinder head design for the Myth engine, proposing tests and modifications.
View original record 719 To HPS. from Rm. Rm.5/ET.23.6.41. ALTERNATIVE MYTH CYLINDERHEAD -------------------------- We are sending you herewith detail drawings for an alternative cylinderhead for the Myth engine. This…

scan0088 Modifying the gastight seal on the steering column to suit a Borman Douglas design.
View original record To Rm. from Ev/JD. Copy to Ev. Rm/AH. Rm/EAG. 120 Ev/JD.6/ST.29.4.41. WITH Dashboard. ------------- We attach to Rm/AH's copy the original of PL.563 - Modified Position of Gastight Seal on Steering…

scan0089 Instructions for mounting a Lucas coil and starter switch on the dashboard.
View original record To Rm/ from Ev/JD. Copy to Ev. Rm/HH. Rm/SAG. 720 MYTH Dashboard. We attach to Rm/HH's copy the original of PL.650 - Mounting of Lucas Coil & Starter Switch on Dashboard. The above scheme shews the…

scan0090 Mounting of a Lucas Coil and Starter Switch for the MYTH model dashboard.
View original record To Rm/ from Ev/JD. Copy to Ev. Rm/HH. Rm/EAG. Ev/JD.8/ET.29.4.41. 720 1080 MYTH Dashboard. We attach to Rm/HH's copy the original of PL.650 - Mounting of Lucas Coil & Starter Switch on Dashboard. The…

scan0091 'MYTH Starter Switch' and the associated Lucas Starter Switch drawing PL.549.
View original record 720 To Rm. from Ev/JD. Copy to Ev. Rm/HH. Rm/AAG. Ev/JD.7/SP.29.4.41. MYTH Starter Switch ------------- We attach to Rm/HH's copy the original of PL.549 - Lucas Starter Switch. The above scheme shows…

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