Rolls-Royce Archives
| Identifier | Entry | ||
| 11-page001 | The Wraith gearbox, discussing associated drawings, servo drive comparisons, and high ratio gears for Bentley. | ||
| View original record | To BY. from HDY. c. Wer E. Ha. De. RHC. [Handwritten, crossed out text] XXXX [Handwritten] 628 HDY.3/HP.5.9.34. Wraith Gearbox. ----------------- Herewith are N. Sch's 4171 and 4172 which show the… | ||
| 11-page002 | Design differences between the Wraith and Spectre gearboxes, referencing specific schematics. | ||
| View original record | x4209 628 To [redacted] from HDY. HDY.1/HP.20.9.34. c.c. [redacted] Wraith Gearbox. ---------------- Herewith are N. Sch's 4162 and 4163 which show the actuating mechanism, casing and suspension of… | ||
| 11-page003 | Design and specifications of the Wraith Gearbox. | ||
| View original record | To BY. from HDY. HDY.2/HP.27.8.34. c.c. Wor. E. Hs. Wa. HNC. FEv. Wraith Gearbox. We send herewith N. Sch.4161 which shows the gears shafts and bearings for this box. The box is in most respects the… | ||
| 11-page004 | Requesting to alter instructions for the Wraith Gearbox special bearings. | ||
| View original record | 44709 GRY 628 To Bfr from HDY. HDY.3/HP.18.10.34. c.c. Wor-E. Hs. Sar-Lns. Wraith Gearbox - Special Bearings. We see that on our N. Sch.4161 we indicate that the layshaft centre bearing should be a… | ||
| 11-page005 | Modifications to the Wraith Gearbox regarding spline grinding clearance. | ||
| View original record | To EY. from HDY. c: Wor. E Hs. De. FHC. Wraith Gearbox. With regard to the point raised by your G. Department about the clearance for the grinding wheel when grinding the splines on the front end of… | ||
| 11-page006 | Lightening holes and anti-rattle features for the Wraith Gearbox, noting its use on the Bentley. | ||
| View original record | X704 628 HDY.4/MN. 4/10/34. To BY. Copy to Wer.M. Ms. Der.RHO. GRY Wraith Gearbox. Herewith are N.Schs. 4199 and 4200 which show the lightening holes in the T.and 3rd. and 2nd. speed S.M. sliding… | ||
| 11-page007 | Proposal to modify the Wraith Gearbox by rotating cam pins to prevent interference between slots and spring plungers. | ||
| View original record | 628 x4709 KGR4 To Dr. from HDY. HDY.3/HP.5.10.34. c. Hs HHG Wraith Gearbox. -------------- We find that as drawn on N. Sch.4161 the slots milled in the S.M. sleeve for the extensions on the actuating… | ||
| 11-page008 | The specifications of the 1st speed pinion for the Wraith Gearbox. | ||
| View original record | 628 13 To Mr. From HDY. HDY.2/MP.12.10.34. C. for. Mr. Hs. Mr. Cft. GRY Wraith Gearbox. N. Sch.4165 herewith gives particulars of the 1st speed pinion for this box. We have not stated the radius at… | ||
| 11-page009 | Modification to the Wraith Gearbox selector lock housing. | ||
| View original record | 46709 628 To BF. from HDY. c. Wer.H. Ms. Ba. HHG. HDY.7/HP.25.10.34. Wraith Gearbox. With regard to the selector lock housing for this box, will you kindly bring this into agreement with N. Sch.4234… | ||
| 11-page010 | The interchangeability of a gearbox part for the Wraith model with one from the Spectre. | ||
| View original record | To BY. from HDY. c.c. Messrs. E. Hs. Da. RHC. HDY.1/HP.25.10.34. Handwritten: 4109/628 Wraith Gearbox. Will you kindly note that this box can have the same fulcrum pin and adjustment washer for the… | ||
| 11-page011 | Alternative design for the Wraith Gearbox 2nd speed synchromesh. | ||
| View original record | To BY. Copy to wor.F. HS. DA. RHO. [Handwritten: 628] HDY.1/WN.1/11/34. [Handwritten signature: GRY] Wraith Gearbox. Herewith is N Sch.4247 which shows a sliding piece for the 2nd. speed synchromesh… | ||
| 11-page012 | Scheme for plain spherically mounted bearings on the second speed selector shaft for the Wraith Gearbox. | ||
| View original record | 46709 628 To EY. from HDY. HDY.3/HP.21.11.34. c. Wor.E. Hs. Ba. RHC. Wraith Gearbox. N. Sch.4254 herewith shows plain spherically mounted bearings applied to the 2nd speed selector shaft. We are not… | ||
| 11-page013 | Modifications to the servo and speedometer drive for the Wraith Gearbox. | ||
| View original record | 4109 628 To BY from HDY. c. Wor. E. Hs. Da, REC, Hs/Wst. Wraith Gearbox. N. Sch.4268 herewith shows modifications to the servo and speedometer drive, to reduce the speed of the servo in accordance… | ||
| 11-page014 | Modifications to the Wraith gearbox casing to accommodate a larger servo. | ||
| View original record | #709 628 To BY. Copy to Mr. R.L. HS. BG. HDY.1/MN.19/12/34. WRAITH GEARBOX. N.Sch. 4304 herewith shows the modifications to the gearbox casing necessary to accommodate a larger servo. HDY. Att:… | ||
| 11-page015 | Cost-reduction modifications for the Wraith Gearbox rocking shaft. | ||
| View original record | x4709 628 To BY. from HDY. c. Hor. E. Hs. Ba. RHO. Sft. (Struck through) HDY.1/HP.8.5.35. Wraith Gearbox. (Underlined) N. Sch.4294 herewith shows modifications to reduce the cost of manufacture of the… | ||
| 11-page016 | Secret memo detailing modifications to the Wraith gearbox based on schematics 4488 and 4494. | ||
| View original record | GRY Light 6.28 To EY. from HDY. SECRET. HDY.2/HP.17.5.35. C. Wor. E. Hs. Da. PHO. RM Wraith Gearbox. Herewith are N. Sch's 4488 and 4494 which bring this gearbox into line with what has been recently… | ||
| 11-page017 | Requesting the modification of a servo drive shaft for a Wraith Gearbox to reduce weight. | ||
| View original record | SECRET [Handwritten crossed out] 1004 [Handwritten] 628 To HY. from DY. HDY.2/HP.22.5.35. c. WEP. E. Hs. Ber. RHC. Wraith Gearbox. Will you kindly modify the servo drive shaft for this box to reduce… | ||
| 11-page018 | Revision of the Wraith Gearbox design for cost savings and the synchromesh mechanism. | ||
| View original record | Hs/Rm. c. E. Da. [Handwritten:] GRY [Handwritten:] 4044 628 E/HDY.2/HP.24.2.36. Wraith Gearbox. We are revising this gearbox design to suit unit construction, and are making whatever savings in cost… | ||
| 11-page019 | Suggesting a cost reduction for the Wraith gearbox by abolishing the grinding of gears and instead using a lapping finishing process. | ||
| View original record | To RHC. c. to Hdy. [Handwritten Note] X1044 e 2/b Wraith Gearbox. We have been asked for suggestions to reduce the cost of this gearbox. We think the greatest advantage can be got from abolishing… | ||
| 11-page020 | Production methods and potential issues for the Wraith Gear Box. | ||
| View original record | To E/Edy. from RHC/RH. c. Hs/Gry. RHC/RH.1/EHM23.3.36. Wraith Gear Box. 27.2.36. to cheapen the production of Gear Boxes would not be favourable. The introduction of double cutting in opposition to… | ||
| 11-page021 | Use of ball bearings with spring rings for the Wraith Gearbox to reduce machining costs. | ||
| View original record | Handwritten: Grylls Any comments Rm- Handwritten: 628 X1041 ROY. C.E. Des. Dept. Hs/fm. P/HDY.2/HP.23.4.36. Wraith Gearbox - Ball Bearings with spring rings to retain outer race. With regard to the… | ||
| 11-page022 | Continuation sheet of a document regarding a price enquiry. | ||
| View original record | (sheet 2) E/HDY.2/HP.22.4.36. and it may be thought worth while to make the same enquiry as to price from them. /HDY. | ||
| 11-page023 | Letter from The Hoffmann Manufacturing Co. Ltd. confirming their willingness to supply bearings. | ||
| View original record | COPY THE HOFFMANN MANUFACTURING CO.LD. CHELMSFORD. 3rd April 1936. E/HDY.1/HP. CP/F. Messrs. Rolls-Royce Ltd., DERBY. Dear Sirs, Referring again to your favour of the 24th ultimo, our reply of March… | ||
| 11-page024 | Letter from a supplier discussing the standardization and cost of bearings with recessed outer races. | ||
| View original record | COPY. THE HOFFMANN MANUFACTURING CO.LTD. CHELMSFORD, ESSEX. 27th March 1936. E/HDY.1/HP. TT/F. Messrs. Rolls-Royce Ltd. D E R B Y. We are in receipt of your letter of the 24th instant. and in reply… | ||
| 11-page025 | Letter from Ransome & Marles Bearing Co. Ltd. discussing the supply and specifications of bearings with spring rings. | ||
| View original record | COPY. RANSOME & MARLES BEARING CO.LTD. NEWARK-ON-TRENT. E/HDY.1/HP. Tech.Dept. FOH/MB. Messrs. Rolls-Royce Limited. D E R B Y. Dear Sirs, With reference to your valued communication of the 27th… | ||
| 11-page026 | The concluding page of a letter from Ransome & Marles Bearing Co. Ltd. | ||
| View original record | (sheet 2) should not be equally satisfactory as the type at present in use, and we trust this information will fully cover your requirements. Yours faithfully, RANSOME & MARLES BEARING CO.LTD. (Sgd)… | ||
| 11-page027 | Proposed modification to the Wraith gearbox gear lever, suggesting a trial on a Bentley. | ||
| View original record | Hs/Rm. GRY 628 C. E. Da. RHC. BY. E/HDY.1/HP.8.5.36. Gearbox - Wraith. The suggestion has been made by E/EV that the isolated gear lever may work satisfactorily without any universal joint between the… | ||
| 11-page028 | The actuation gear, servo, and speedometer drive for the Wraith II gearbox, comparing it to Phantom models and specifying ratios. | ||
| View original record | r1044 628 HY. C. E. Da. Hs. RHo. Hs/Rm. E/IDY.3/HP.29.6.36. Wraith II Gearbox. Actuation Gear, Servo and Speedometer Drive. We send herewith N.Sch.4840 which shows the above and some sections of the… | ||
| 11-page029 | Design proposals and specifications for the Wraith II gearbox. | ||
| View original record | GRY XTOFF 628 30 C. [REDACTED] He/Em. /HDY.1/HP.26.6.36. Wraith II Gearbox. We send herewith N.Sch.4838 which shows the gears, synchromesh pieces, shafts and bearings for this box. The shaft centre… | ||
| 11-page030 | Specifications and comparisons for gearbox components, particularly in relation to the Phantom III. | ||
| View original record | (sheet 2) An extension is provided at the rear end of the box to shorten the propeller shaft. A Gits oil seal is used at the rearmost bearing as oil cannot be prevented from running down the extension… | ||
| 11-page031 | Schedule N.Sch.4849, detailing the lightening holes in the Wraith II gearbox's top and third speed sliding piece. | ||
| View original record | K1044 628 C. C. to. Mr. HS. RWD. Hg/Dm. Wraith II Gearbox. E/HDY.1/HP.8.7.36. We send herewith N.Sch.4849 which shows the lightening holes in the top and third speed sliding piece. E/HDY. | ||
| 11-page032 | Drawing H.Sch.4848, showing lightening holes in the top and third speed sliding piece for the Wraith II Gearbox. | ||
| View original record | GRY x101/11 628 H.S.S. C. H.S.S. H.H. A.H.E. HS/rm. E/HDY.1/RP.8.7.36. Wraith II Gearbox. We send herewith H.Sch.4848 which shows the lightening holes in the top and third speed sliding piece. E/HDY. | ||
| 11-page033 | Drawings for the Wraith II gearbox casing and actuating mechanism. | ||
| View original record | To-HY. Copy to S. Ds. Hs. RHO. He/Rm. ******************** Xintt 628 E/HDY.2/MW.13.7.36. Wraith II. ============== Gearbox Casing. ============== We send herewith N.Sch.4841,4842, and 4843, which give… | ||
| 11-page034 | Drawings for the Wraith II gearbox casing. | ||
| View original record | To. HY. Copy to Sp.Dev.Hs., HBP, Hs/Ru. E/HDY.2/HT.13.7.36. 628 Wraith II. ************ Gearbox Casing. **************** We send herewith N.Sch.4841,4842, and 4843, which give the remaining… | ||
| 11-page035 | Design and dismantling procedure for the Wraith II gearbox. | ||
| View original record | 628. To: BY Copy to E. Da. Hs. NHC Hs/Rm. GRY- WRAITH II GEARBOX. We send herewith N.Sch:-4862 showing the gearbox extension and rear unit support on the frame. A Silentbloc rubber bush is used and… | ||
| 11-page036 | Wraith II gearbox extension, rear unit support, and the use of a Silentbloc rubber bush. | ||
| View original record | X1044 628. To:-BY E/Hdy.1/JH. 17-7-36. Copy to Ev. Da. MS. RMC. HS/RM WYMAN. File WRAITH II GEARBOX. We send herewith N.Sch:-4862 showing the gearbox extension and rear unit support on the frame. A… | ||
| 11-page037 | Instruction regarding hardened and unhardened surfaces for the Wraith II gearbox splines and shafts. | ||
| View original record | Handwritten: 4044, 628, Rm Typed: O.C. to Mr. RHC. Hs/Rm. Derby E/HDY.3/HP.8.8.36. Wraith II - Gearbox. With reference to the splines on the shafts and in the gears and synchromesh pieces, will you… | ||
| 11-page038 | Frame stiffeners and modifications for the Wraith II Gearbox. | ||
| View original record | DI. C.E. HS/Rm.Da. To R.Mc. GRYLLS 628 E/HDY.4/HP.8.8.36. Wraith II Gearbox. We send herewith N.Sch.4867 showing a stiffener for the frame at the point of attachment of the engine and gearbox rear… | ||
| 11-page039 | Rearrangement of studs for the Wraith II Gearbox rear top cover. | ||
| View original record | GRY. x1044 Rm 628 Dr. C.E.De. Hs. RHS E/HDY.2/HP.10.8.36. Wraith II Gearbox. We send herewith N.Sch.4871 showing a slight rearrangement of the studs for the rear top cover to improve the spacing.… | ||
| 11-page040 | Oil communication within the Wraith II gearbox and the potential solution of using a cork. | ||
| View original record | X1044 GRYLLS 628 DFT c.c. F.R.B., R.W.C. Hs/Rm. E/HDY.2/HP.13.8.36. Wraith II. Gearbox. We send herewith N.Sch.4873 showing the oil return from the front end bearing. It will be seen that there is… | ||
| 11-page041 | Modifications to the Wraith II gearbox, specifically the gear gate and lever. | ||
| View original record | X1044 628 GRY c. F.R.R. RMC. Hs/Rm. E/HDY.1/HP.17.8.36. Wraith II Gearbox. We send herewith LeC.5212 showing the change gear gate and gear lever. There is, with this scheme, only one universal joint… | ||
| 11-page042 | Spring rings and bearing grooves for the Wraith II gearbox. | ||
| View original record | GRYLLS 628 BY. c.c. S. Day. F.W.C. Hs/Rm. E/HDY.1/HP.24.8.36. Wraith II Gearbox. We send herewith N.Sch.4885 giving particulars of the spring rings and bearing grooves for endwise location to be used… | ||
| 11-page043 | New design for the Wraith II gearbox and the modification of splines on the 2nd motion shaft. | ||
| View original record | Handwritten: X10048 62 GRY C.E. De.Ws. Hs/Rm. E/HDY.2/HP.13.10.36. Wraith II Gearbox. We shall shortly be sending a design for a 2nd speed coupling on the lines of N.Sch.4824 for the Phantom III. We… | ||
| 11-page044 | Confirming the task of fitting a Wraith gearbox to an independent suspension Bentley. | ||
| View original record | To E. Hs/Rm.19/KW.16.10.36. [Handwritten annotations] KW [crossed out] 628 This is to confirm that you will look into the question of fitting the Wraith gearbox to the independent suspension Bentley,… | ||
| 11-page045 | The Simplified Speedo Drive for the Wraith II gearbox, discussing savings and design objections. | ||
| View original record | Handwritten: E/Hdy. (crossed out) Eg (crossed out) Baq (crossed out) By. (crossed out) Hs. Rm 1044. GRY. 628 Typed: Sft1/BH.24.10.36. WRAITH II. GEARBOX. Simplified Speedo Drive. N.Sch.4922. In reply… | ||
| 11-page046 | Design of the Wraith II gearbox and its 2nd speed coupling. | ||
| View original record | 1026 628 GRY BY. c.c.E.Exp.RHC.Rm. E/HDY.2/HP.5.11.36. Wraith II Gearbox. We send herewith N.Sch.4995 showing the universal 2nd speed coupling for this car. This is the same as N.Sch.4824 for the… | ||
| 11-page047 | Request to modify the 3rd speed bush and oil hole placement for the Wraith TT Gearbox. | ||
| View original record | DY [crossed out] c. Mr. Rm. [Handwritten signature: GRY] [Handwritten: Lough 62] E/HDY.1/HP.9.11.36. Wraith TT Gearbox. Will you kindly modify the 3rd speed bush for this box on the lines of that for… | ||
| 11-page048 | Retaining plate for the Wraith II gearbox change gear gate. | ||
| View original record | BY C. E. Da. Rm. RHC/HPS. 104G 628 E/HDY.2/HP.23.11.36. Wraith II - Gearbox. We send herewith M.Sch.4960 showing a retaining plate for the four bolts which secure the change gear gate to the frame.… | ||
| 11-page049 | Production hold-up on the Wraith II gearbox and the introduction of new parts to resolve it. | ||
| View original record | HGTG C28 GRY See By & make sure details are going forward. Rm E. c. Rm. E/HDY. RHC/HPS. Da.2/HP.26.11.36. Wraith II Gear Box. Referring to the holdup of Wraith II gearbox, in order to incorporate the… | ||
| 11-page050 | Alterations to the Wraith II Gearbox spline design for cost reduction and manufacturing practice. | ||
| View original record | 1044 628 SECRET. BY. C.E. Da. RHC. Rm. Ws.HPS? E/HDY.1/HP.30.12.36. Wraith II Gearbox. We send herewith N.Sch. 4988 showing six splines for the 1st speed wheel instead of ten as shown by N.Sch. 4838.… | ||
| 11-page051 | Suggesting a change from forging to die-casting for the Wraith II Gearbox selector plunger housing to reduce costs. | ||
| View original record | SECRET. 1044. 628. BY. C.E.L. Rm. HPS. E/HDY.3/HP.31.12.36. Wraith II Gearbox. With reference to the selector plunger housing GW.608 which in accordance with our N.Sch.4840 has been instructed as a… | ||
| 11-page052 | Cost-reducing modification to the Wraith II Gearbox reverse shaft bearing. | ||
| View original record | SECRET. 1034. 628 EH. C. E. Dr. Rm. HPS. E/HDY.3/HP.11.1.37. Wraith II Gearbox. We send herewith N.Sch.4994 showing a modification to the rear bearing of the reverse shaft suggested by the… | ||
| 11-page053 | The material change of plugs for the Wraith II gearbox. | ||
| View original record | SECRET. 1049 628 BY. c. Ds. Rm. HPS. W/Lid. E/HDY.3/HP.14.1.37. Wraith II Gearbox. With reference to the two special plugs on this car GW.583 and 616, the filling plug and the drain and observation… | ||
| 11-page054 | Modification to the Wraith TT Gearbox's central diaphragm to improve oil flow. | ||
| View original record | SECRET. GRY toly 628 BY. C. E. Da. Rm. HPS. E/HDY.3/HP.19.1.37. Wraith TT Gearbox. We send herewith N.Sch.5007 showing a modification to the central diaphragm of this box to improve the oil flow… | ||
| 11-page055 | Secret memo regarding drawing N.Sch.5006, which shows the centralised lubrication pipes for the Wraith II gearbox and clutch unit. | ||
| View original record | SECRET. Gry- 628 1044 BY. c. E. Da. Rm. HPS. E/HDY.4/HP.19.1.37. Wraith II Gearbox. We send herewith N.Sch.5006 showing the centralised lubrication pipes to the drip plugs on the gearbox and clutch… | ||
| 11-page056 | Modification to the Wraith II gearbox, using an aluminium die-cast cover. | ||
| View original record | SECRET. BY. c. E. Ba. Rm. HPS. 628 E/HDY.2/HP.21.1.37. Wraith II - Gearbox. We send herewith N.Sch.4983 showing the use of an aluminium die casting for the 2nd and 3rd motion shaft rear bearing… | ||
| 11-page057 | Modification to the first speed selector lever on the Wraith II Gearbox. | ||
| View original record | 628 1044 HY: [text crossed out] c.c. E. Da. Rm. HPS. [text crossed out] SECRET. E/HDY.1/HP.21.1.37. Wraith II Gearbox. We send herewith N.Sch.5012 showing a modification to the first speed selector… | ||
| 11-page058 | Secret memorandum discussing the procurement and manufacturing process for the Wraith gearbox. | ||
| View original record | 105G 628 SECRET. Rm/FJH. from Rm. Rm22/R.28.1.37. WRAITH GEAR BOX. We want to get some unground gears for the Wraith box. As far as we can ascertain the most satisfactory unground gears are made from… | ||
| 11-page059 | Trial of double helical gears for potential gearbox economies. | ||
| View original record | -2- doing, so that he will be in a position to carry on with the work when it is through the experimental stage. RHC. may also be able to render you some assistance. If we can get them we should also… | ||
| 11-page060 | Secret memo confirming the fitting of a second Wraith gearbox to vehicle 18.G.1V for dynamometer and road testing. | ||
| View original record | SECRET 628 1044 HPS. from Rm/Gry. Rm/Gry.3/AP.2.2.37. WRAITH GEARBOX. This is to confirm that you will fit the second Wraith box to 18.G.1V. for dynamometer work. If you can arrange that the brakes… | ||
| 11-page061 | Cost-reduction modifications for the Wraith II Gearbox. | ||
| View original record | 628 SECRET 1044 QRY BL. c.c. E. Da. Am. HPS. E/HDY.2/HP.2.2.37. Wraith II Gearbox. The following modifications have been suggested by the Experimental Department to reduce cost. Will you kindly… | ||
| 11-page062 | Investigation into a complaint that the Wraith II gearbox cannot be removed due to a temporary, oversized propeller shaft being fitted. | ||
| View original record | Rm E. 628. E/HDY./HP.5.2.37. Wraith II Gearbox. We have investigated the complaint that the gearbox cannot be removed without removing the extension and find that the temporary propeller shaft is the… | ||
| 11-page063 | Modification to the Wraith II gearbox second motion shaft, referencing drawing N.Sch.5035. | ||
| View original record | SECRET. COPY top 628. BY: C.R.E. Da. Rm. MRS. Wraith II Gearbox. We send herewith N.Sch.5035 showing a modification to the second motion shaft to provide more depth of shoulder for the location of the… | ||
| 11-page064 | Modifications to the Wraith II gearbox, specifically a detachable reverse gear fork. | ||
| View original record | 1044 6 28 MESSRS. C. L. Pa. By. Fm. E/HDY.1/HP.15.2.37. Wraith II - Gearbox. We send herewith a print of N.Sch.5042 which shows a detachable reverse gear fork to facilitate assembling the box. We… | ||
| 11-page065 | Modifications to the Wraith II Gearbox, including increased clearances and the deletion of a retaining plate. | ||
| View original record | 1044 (628) DY. SECRET. E/HDY.2/HP.17.2.37. c. E. Da. Rm. HPS. Wraith II Gearbox. We send herewith N.Sch.5045 which shows increased clearance for assembling the 1st and 2nd speed selector levers. We… | ||
| 11-page066 | Suggesting the synchromesh gear actuating stirrups for the Wraith II gearbox be made from cast iron instead of mild steel. | ||
| View original record | 1096 (628) SECRET S.Y. c.c. E.Da. Rm. HPS. E/HDY.2/HP.19.2.37. Wraith II Gearbox. Further to E/HDY.2/HP.2.2.37, the suggestion has been made by E/Psn. that the synchromesh gear actuating stirrups… | ||
| 11-page067 | With remarks on suggestions for cost reduction on the Wraith Gearbox. | ||
| View original record | SECRET. c.c. Mr.Rm.Ws.By/Cgh. E/HDY.1/HP.24.2.37. Wraith Gearbox. With reference to By/CGH.7/W.22.2.37 in which a number of suggestions are made to reduce cost, we do not agree that in all cases no… | ||
| 11-page068 | Point-by-point response to suggestions regarding alterations for components like shafts and plungers. | ||
| View original record | (sheet 2) alteration may be of importance. As far as we are concerned the question can be determined as best suits production. (5) A slight reduction to the thickness under the thread is made, but we… | ||
| 11-page069 | The use of Wraith plungers on the Phantom and discussing anti-rattle control springs. | ||
| View original record | - sheet 3 - the outer member. This reduces the clearance allowance of .050 for the engagement of the teeth to .025, which is too little. Our suggestion is that we try the Wraith plungers on the… | ||
| 11-page070 | Modifications to the Wraith gearbox casing. | ||
| View original record | x628. DI. C.E. De. Rm. MPW. SECRET. E/IDY.2/HP.25.2.37. Wraith Gearbox. We send herewith N.Sch.5050 and 5056 shewing modifications to the gearbox casing. The former shows increased clearance for the… | ||
| 11-page071 | The failure of the Wraith II No. 1 gearbox's second motion shaft during a dynamometer test. | ||
| View original record | To Rm. from HPS/RH. c. to E/De. c. to E/Hsy. c. to HPS. 628. HPS/RH.1/CB.3.3.37. WRAITH II No. 1 GEARBOX. Failure of 2nd Motion Shaft on Dynomemeter Test. Conditions of Test. 2 hours in 1st gear. 5½ "… | ||
| 11-page072 | Diagram illustrating the failure of a gearbox after a dynamometer test, showing a broken 2nd motion shaft. | ||
| View original record | Ex I 132 REAR END OF 2ND MOTION SHAFT BROKEN AS SHOWN CONDITIONS OF DYNAMOMETER TEST 2 HRS IN 1ST GEAR 5 1/2 " " 2ND " 10 " " 3RD " 2 " " TOP ROLLS-ROYCE LTD. PRINT ROOM 27 FEB 1937 DERBY FAILURE OF… | ||
| 11-page073 | Cost-saving modifications to the Wraith II gearbox. | ||
| View original record | 628. SECRET *BY. c. E. Pa. RM. HRS. E/HDY.2/HP.16.3.37. Wraith II - Gearbox. We send herewith N.Sch.5055 showing a rocking shaft for the top and 3rd speed actuation modified to reduce cost. There is… | ||
| 11-page074 | New gearbox design for the Wraith III model, comparing it to the Wraith II. | ||
| View original record | 628 BY. and Rm. SECRET. E/HDY.1/HP.16.3.37. c. E. Da. HPS. Wraith III Gearbox. We send herewith N.Sch.5064 showing constant mesh, third and second speed gears with a smaller helical angle and,… | ||
| 11-page075 | Technical memorandum detailing design changes and considerations for gearbox components including oil scoops, synchromesh cones, and actuating rings. | ||
| View original record | (2) supplied by the scoop. Similar holes are shown in the 3rd speed driven gear. We should like tests made to determine whether these holes supply oil under all speed conditions. We know that the… | ||
| 11-page076 | Secret memo regarding a modification to the Wraith III Gearbox, specifically deleting plugs for selector rods. | ||
| View original record | Smith 628 BY. SECRET. C. F. B. Ba. Rm. LPS. E/HDY.6/MP.22.3.37. Wraith III Gearbox. We send herewith N.Sch.5095 showing a modification to the diaphragm which deletes the plugs for the holes for the… | ||
| 11-page077 | Modifications to the Wraith III gearbox assembly. | ||
| View original record | SECRET. 628 BY. C. E. Da. Rm. HPS. E/HDY.1/HP.31.3.37. Wraith III Gearbox. We send herewith N.Sch.5100 showing a modification to the servo drive shaft to enable the worm wheel and adjacent pieces to… | ||
| 11-page078 | Specification change for the Wraith III gearbox concerning oil holes. | ||
| View original record | 628. BY. c.c. E. Da. Rm. SECRET E/HDY.1/HP.12.4.37. Wraith III Gearbox. With reference to N.Sch.5064, we understand that none of the items shewn and referred to in E/HDY.1/HP.16.3.37 are to be… | ||
| 11-page079 | Modifications to the Wraith III Gearbox to make gear wheel bosses flush with the rims. | ||
| View original record | SECRET. c.c. Bx. BA. RHC. Rm. HPS. 628 Wraith III Gearbox. FLUSH. We have been requested by RHC to make gear wheel bosses with the rims where it is possible to do so, in order to improve the location… | ||
| 11-page080 | Positioning of the reverse driving gear on the layshaft. | ||
| View original record | (sheet 2) Reverse Driving Gear on Layshaft. Is already flush on the front face or if not exactly so it should be altered accordingly. E/HDY. | ||
| 11-page081 | Modification to the Wraith III gearbox casing to facilitate the machining of bearings for the 1st speed actuating rod. | ||
| View original record | BT. c.c. E.F. Des. Rm. ERS. SECRET. 628 E/HDY.2/HP.6.5.37. Wraith III Gearbox. We send herewith:- M.Sch.5140 showing a modification to the gearbox casing to facilitate the machining of the bearings… | ||
| 11-page082 | Manufacturing tolerances and material hardness for the Wraith III gearbox 2nd speed coupling. | ||
| View original record | SECRET. 628 Copy to Mr. [REDACTED] Mr. [REDACTED] Rm. HPS. Mr. [REDACTED] E/HDY.1/M.21.5.37. WRAITH III. GEARBOX. Referring to the 2nd speed coupling, we have been asked by the Operation Planning… | ||
| 11-page083 | The Wraith gearbox, discussing a trial for the toothed coupling comparing 'V' serrations with Fellows involute teeth. | ||
| View original record | SECRET. Copy to Mr. [redacted] Mr. [redacted] Rm. [redacted] Hcp. [redacted] Je/Th. [redacted] Mr. Goodall. 628 WRAITH GEARBOX. Referring to the toothed coupling of the extension shaft at the back end… | ||
| 11-page084 | Modification to the speedometer drive for the Wraith III gearbox, replacing an open ended bearing. | ||
| View original record | SECRET. 628 Copy to Der. Im. HPC. E/HDY.4/M.10.6.37. WRAITH III. GEARBOX. We send herewith N.Sch.5168 showing a modification to the speedometer drive made at the request of the Experimental… | ||
| 11-page085 | Modifications to the Wraith III Gearbox rocking shaft to improve the ease of forging. | ||
| View original record | 62 T SECRET. DF. C. P. Ba. RDC. Fm.HFS. E/HDY.1/HP.21.6.37. Wraith III Gearbox. We send herewith N.Sch.5177 showing further modifications to the top and 3rd speed rocking shaft to improve the ease of… | ||
| 11-page086 | Modification to the oil holes in the Wraith III gearbox constant mesh pinion and bush. | ||
| View original record | SECRET 627 BY. C. E. Da. Fm. HPS. E/HDY.1/HP.24.6.37. Wraith III Gearbox. We send herewith N.Sch. 5182 showing a modification to the oil holes in the constant mesh pinion and bush. The modification is… | ||
| 11-page087 | Use of a common gearbox and divided propeller shaft for Bentley, Phantom, and Wraith models. | ||
| View original record | C. Da. Rm. RHC. E/HDY.2/HP.24.6.37. Common Gearbox. We are not proposing to provide an extension (as provided on Wraith III) at the rear end of this box. As the Bentley is having a divided propeller… | ||
| 11-page088 | Permanent design for the Wraith III gearbox rear suspension and stay. | ||
| View original record | 628 Wyman Any comments? Pm BY. c.c. Ba. Ba. Em. HPS. RHC/TVT. SECRET. File Lycun E/HDY.1/HP.1.7.37. WRAITH III Gearbox Rear Suspension and Stay. We send herewith N.Sch.5187 showing the permanent… | ||
| 11-page089 | Instruction to make and fit parts for the Wraith III gearbox rear suspension and stay for a 10,000-mile test in France. | ||
| View original record | To HPS. Rm/Wym.8/JH.7.7.37. 628 Wraith III Gearbox Rear Suspension and Stay. Will you please instruct for all the parts to be made for the above to "N" scheme 5187 and when completed fit to 26-G-VI… | ||
| 11-page090 | Analysis of a spongy gear change feel on the Wraith model, proposing an increased diameter shaft to improve stiffness. | ||
| View original record | 628. By. from Rm/Gry. c. Hdy. Rm/Gry1/R.16.7.37. CHANGE SPEED MECHANISM - WRAITH. There is a considerable feeling of sponge when changing gear on a Wraith car, particularly if the synchro-mesh cones… | ||
| 11-page091 | Request for experimental details of a new shaft for the Wraith's change speed mechanism to match the stiffness of the 25/30 HP chassis. | ||
| View original record | BY/TWD c. Rm/Gry. c. Hdy. GRY 628 BY/21/N.30.7.37. (Dict. 29.7.37) Change Speed Mechanism - Wraith. We attach hereto ( BY/TWD. only) copy of memo Rm/Gry.1/R.16.7.37, relating to the shaft between the… | ||
| 11-page092 | Proposed design changes to the Wraith III gearbox to simplify production. | ||
| View original record | BY. from RHC. c.c. to Rm. 638 GRY RHC.1/LS.23.8.37. WRAITH III. GEARBOX. In view of the fact that a considerable quantity of the existing type Wraith III. Gear Box will probably be produced, we should… | ||
| 11-page093 | Overdrive gearboxes on the Wraith model. | ||
| View original record | Sg. from Gry. 628 also 115'3 Rm/Gry2/R.9.9.37. OVERDRIVE GEARBOXES. Herewith copy of memo concerning over- drive on Wraith. Rm/Gry. | ||
| 11-page094 | Rationale for fitting overdrive gearboxes to Phantom III and Wraith models. | ||
| View original record | OVERDRIVE GEARBOXES. The primary object in fitting an overdrive on the P.III is to increase the life of the big-end bearings. The fitting of such a gearbox to a car immediately demonstrated the… | ||
| 11-page095 | Modifying the Wraith's change speed mechanism to a fully-isolated type to eliminate gear lever rattles. | ||
| View original record | 628 Hy. from Rm/Gry. c. Da. c. Hdy. Rm. absent. Rm/Gry1/R.11.9.37. CHANGE SPEED MECHANISM - WRAITH. Judging by the gear leverrattles which we have on both 24 and 27 G.VI, we think it will be necessary… | ||
| 11-page096 | Secret memorandum detailing the deletion of adjustment washers on the Wraith III gearbox. | ||
| View original record | 628. To BY. from HPS/RH. c. to Rm. c. to Dev. HPS/RH.1/VS.13.9.37. S E C R E T . WRAITH III GEARBOX. Deletion of Adjustment Washers. At present eight Adjustment Washers are used on Wraith III train of… | ||
| 11-page097 | Two alternative manufacturing schemes for the Wraith III gearbox distance piece. | ||
| View original record | C. Dept. C. Rm. C. H.S. 628 DA.6/G.15.9.37. WRAITH III - GEARBOX. Referring to HPS/RH.1/VS.13.9.37. (copy attached) would you please delete the adjustment washers, and one distance piece, referred to,… | ||
| 11-page098 | The deletion of adjustment washers on the Wraith III gearbox to save assembly time. | ||
| View original record | COPY. To BY. from HPS/RH. c. to Rm. c. to Da. HPS./RH.1/VS.13.9.37. S E C R E T. WRAITH III GEARBOX. Deletion of Adjustment Washers. At present eight Adjustment Washers are used on Wraith III train of… | ||
| 11-page099 | The fully isolated gear lever modification for the Wraith III. | ||
| View original record | G. Dept. (2 Prints) Er. Dept. P. Dept. O. Rm. (1 Print) C. Rm./Insp. (1 Print) DA.1/G.11.10.37. 628 ? WRAITH 111 - GEAR LEVER. Herewith is G.CD.125 shewing the fully isolated gear lever on Wraith 111.… | ||
| 11-page100 | Modifications to gearbox bearings for the Wraith III model to facilitate diamond boring. | ||
| View original record | 628 C. Dept. (2 Prints). P. Dept. (Struck through) E. Dept. (Struck through) D. Dept. (Struck through) G. RM. c. RRG/CAN. (Struck through) DA.15/S.29.10.37. WRAITH III. SECTIONS 6030/6040, 6070.… | ||
| 11-page101 | Accompanying blueprints for a modified Gearbox Oil Filler Plug for the Wraith III model. | ||
| View original record | ST/RS C. Rm. 628 DA.9/C.5.12.38 A H F.J. HARDY WRAITH III. SECTION 6030. R.SCH. 5075. Please receive herewith the following blueprints :- G.CD.272 Oil Filler Plug - Gearbox. Wraith III. The above… | ||
| 11-page102 | New gearbox layshaft drawing (PD.82) for Bentley and Wraith models, discussing the grinding process. | ||
| View original record | COPY FOR FILES. Hs. c. Da. c. BY. c. Rm. Handwritten: 628 also 228 1044 Da/Hdy.2/G.22.12.37. BENTLEY, BENTLEY 50 AND WRAITH GEARBOX. We send herewith a print of PD.82 which shows the layshafts for… | ||
| 11-page103 | Blueprints for the modified position of the interlocking mechanism for Wraith III gearbox selector shafts. | ||
| View original record | DY/NS. (struck through) c. Rm. e. De/May (struck through) 628 DA.7/G.24.12.37. FPH (handwritten) WRAITH III. GEARBOX. Please receive herewith blueprints of G.CD.307 Modified Position of Interlocking… | ||
| 11-page104 | Modifications to the Rear End of the Gear Box for the Wraith III Chassis. | ||
| View original record | BT/NOT c. Rm. 628 DA.15/G.30.12.37. WRAITH III. CHASSIS. Please receive herewith blueprints of G.CD.323 Modifications to Rear End of Gear Box. This scheme should be detailed in conjunction with… | ||
| 11-page105 | Technical note outlining two methods for implementing an overdrive in the Wraith gearbox. | ||
| View original record | FILES 628 To get an overdrive in Wraith Gearbox. (a) 3rd. speed becomes overdrive. (1) Assuming Bentley type cone attachment on overdrive gear the pitch radius of this pair cannot be less than 1.462.… | ||
| 11-page106 | Parts required for modifications to the Wraith III chassis gearbox and motion shafts. | ||
| View original record | To. [Redacted] c. Rm/Gry. 628 BT/CRL.4/E.6.1.38. WRAITH III. CHASSIS. GEAR BOX & ACTUATING MECHANISM. SECTION 6030. 1st. & 3rd. MOTION SHAFTS. SECTION 6040. 2nd. MOTION SHAFT. SECTION 6050. In… | ||
| 11-page107 | Modifications to the Wraith III gear change mechanism. | ||
| View original record | G. Rm. 628 Auee DA.15/G.10.1.38. WRAITH III. GEAR CHANGE MECHANISM. Please receive herewith :- G.CD.331 Modifications to Change Gear Mechanism. The control spring washers, nuts and bushes have been… | ||
| 11-page108 | Fault where the Wraith gearbox jumps out of 3rd gear and recommending the fitting of a concertina type coupling. | ||
| View original record | By. from Rm/Gry. c. Da. c. Hdy. 628 Rm/Gry.2/AP.12.1.38. WRAITH GEARBOX. Two cases have now occurred in which 3rd. speed jumps out of gear on Wraith cars on the over-run. On 26.G.V1. the gear jumps… | ||
| 11-page109 | Proposal to change the orientation of the Wraith gearbox drain plugs from horizontal to vertical. | ||
| View original record | BT/NS. c. Rm. 628 DA.1/G.15.1.38. WRAITH GEAR BOX DRAIN PLUGS. With the high engine mounting and the rear mounting under the gearbox, the question of drain plugs on the gear box absorbing ground… | ||
| 11-page110 | The Wraith III gear change mechanism, specifically scheme GCD.331. | ||
| View original record | To BY/NS. c. to HPS. 628? Rm/Wym.11/JH.20.1.38. WRAITH III - GEAR CHANGE MECHANISM TO SCHEME GCD.331. Considering the modifications at present being made to the fully isolated change speed lever,… | ||
| 11-page111 | Replacement of a steel thrust washer with a bronze one in the Wraith gearbox. | ||
| View original record | 628 By/Mtn. from Rm/Gry. Rm/Gry.2/AP.22.1.38 WRAITH GEARBOX Owing to the seizure of a 2nd. speed pinion steel thrust washer, it has been decided to fit bronze on 3rd. and 2nd.speeds. This has been… | ||
| 11-page112 | Modification to the Wraith gear box sliding piece for top and 3rd speed to prevent disengagement on over-run. | ||
| View original record | NY/MS. c. Rm. a. De/Hdy. 628 DA.8/G.25.1.38 DAH FH CAEH WRAITH GEAR BOX. Herewith is FD.101 shewing the sliding piece for top and 3rd speed, modified to provide the concertina form to prevent the 3rd… | ||
| 11-page113 | Requesting a new transmission shaft for the Wraith Gearbox based on a previous experiment. | ||
| View original record | 628 To HPS. from Rm/Gry. c. Wym. Rm/Gry.6/AP.2.2.38 WRAITH GEARBOX In view of the success of the experiment of fitting a more flexible transmission shaft on 24.G.Vl. and its stiffer subsequent… | ||
| 11-page114 | Urgent request for the manufacture of a specific Wraith transmission shaft. | ||
| View original record | To HPS. from Rm/Wym. 628 Rm/Wym.2/AP.11.2.38 WRAITH TRANSMISSION Will you please make up for us as soon as possible a GW.779 Tranmission shaft, the shaft itself to be solid and .875" in diameter with… | ||
| 11-page115 | The measured deflections on the Wraith gearbox transmission shaft when tightening a nut. | ||
| View original record | To Da. from Rm/Gry. c. By. c. Da/Hdy. 628 Rm/Gry.3/AP.11.2.38 WRAITH GEARBOX. As requested by Da., we have measured the deflections that take place when tightening the nut at the rear end of the… | ||
| 11-page116 | Incorrectly marked dipsticks on the Wraith gearbox and the correct oil level. | ||
| View original record | To Rm/IMW. (Chateauroux) Rm/Gry.5/AP.22.2.38 628 also 600a WRAITH GEARBOX. We have discovered that all the dip-sticks in Wraith gearboxes are incorrectly marked. The correct level is 6 1/4" below the… | ||
| 11-page117 | Request for a one-off stiffened gearbox extension shaft for a Wraith experimental car to eliminate a period. | ||
| View original record | EY/NS c. Rm. 628. DA.1/G.22.3.38. WRAITH GEAR BOX. Herewith is FD.133 shewing a stiffened gearbox extension shaft, which it is desired to try with a view to eliminating a period. A rough detail of the… | ||
| 11-page118 | Confirming a request for three more fully isolated change speed mechanisms for the Wraith III model. | ||
| View original record | To HPS. X. 628c Rm/Wym.10/JH.28.3.38. WRAITH III -> FULLY ISOLATED CHANGE SPEED LEVER. Confirming our conversation of this morning, will you please put in hand 3 more fully isolated change speed… | ||
| 11-page119 | The deletion of an oil scoop from the Wraith gear box due to assembly difficulties. | ||
| View original record | To. Dy & Rm.....From RHC. 62-8. A.H. WRAITH GEAR BOX The second speed driver gear GW.773 incorporates an oil scoop GW.1356, which is not present on the Bentley or 25/30-HP., although these units are… | ||
| 11-page120 | Covering memo for a drawing detailing a modification to the rubber buffers for the gearbox tie rod. | ||
| View original record | 6287 c. Rm. DA.S/G.20.4.36. File WRAITH III - G.OD.477 and 487. Please receive herewith drawing of G.CD.611 Modification to Rubber Buffers for Gearbox Tie Rod. The above scheme has been produced to… | ||
| 11-page121 | Disagreeing with the omission of the oil scoop from the Wraith gear box. | ||
| View original record | To RHC. from Rm/FJH. c. By. 628. Rm/FJH.6/MH.27.4.38. WRAITH GEAR BOX. Re your memo RHC.2/MC.13.4.38. We do not agree to the omission of the oil scoop from the Wraith gear box. We would point out that… | ||
| 11-page122 | Impracticality of installing the B.50 gearbox into the existing Wraith III chassis. | ||
| View original record | BY C. Rm. C. De/Rdy. C. De/Ldy. 628 DA.16/G.28.4.38. WRAITH III - GEARBOX INSTALLATION. F.H.K. Please receive herewith :- G.CD.639 Layout showing the impossibility of installing the B.50 gearbox in… | ||
| 11-page123 | Proposed omission of an oil scoop from the Wraith gearbox. | ||
| View original record | Secret To. Rm.... From RHC. By. RHC.1/MC.7.5.38. WRAITH GEARBOX It is observed from Rm/FJH.6/MH.27.4.38., that the proposed omission of the oil scoop from Wraith 3rd Motion Shaft is not agreed to. The… | ||
| 11-page124 | Cover note for drawing FD.174 showing overdrive ratios for the Wraith III gearbox, which was deemed unnecessary and sent for filing. | ||
| View original record | ET/HC. [struck through] c. Rm. c. P.P.D. [struck through] 628 DA.4/G.17.5.38. WRAITH III - GEARBOX. Please receive herewith FD.174 shewing Overdrive ratios in the standard Wraith III gearbox. This was… | ||
| 11-page125 | Request for a sketch and detailed drawing of the experimental Wraith change gear mechanism. | ||
| View original record | 628 also 600a To By/Ald. Rm/IMW.18/JH.24.6.38. WRAITH CHANGE GEAR MECHANISM. Will you please make a sketch of the experimental change gear mechanism fitted to 26.G.VI. for the purpose of illustrating… | ||
| 11-page126 | Request for figures regarding the efficiency of an Acme oil thread on a Wraith first motion shaft. | ||
| View original record | 628 To HPS/W.Bell. from Rm/Gry. Rm/Gry.8/MH.28.6.38. OIL RETURN THREADS. Confirming our conversation with you we should like figures to show whether the efficiency of the Acme oil thread such as on a… | ||
| 11-page127 | Suggested modification to the 25/30 (Wraith) gearbox synchromesh operating gear. | ||
| View original record | DI/ms. c. Rm. c. De/may. DA.12/G.27.8.38. 628 25/30 (WRAITH) GEAR BOX. Herewith is PD.247 shewing a modification to the synchromesh operating gear suggested by Works, for economy. Details for an… | ||
| 11-page128 | Modification to synchro-mesh operating cams for a 25/30 HP vehicle. | ||
| View original record | PD 247 PIN .248-1 DIA PIN .4365-5 DIA. PIN .3745-1/4 DIA. REMOVE SHARP EDGES PIN .437-1/4 DIA. 94° CONTACT 104° CONTACT .4375 +.010 -.0 47° 45° ANGLE OF CONTACT (WORN) SCALE 10/1 3RD & 4TH SPEEDS… | ||
| 11-page129 | Failure of a Wraith speedometer drive due to seizure, corrosion, and lack of lubrication. | ||
| View original record | 628 To By & Rm...from RHC. c. HS. c. IA. c. HFB. RHC.2/MD.15.10.38. SPEEDOMETER DRIVE - WRAITH. We are informed by JLE. that a Wraith Speedometer drive has failed, due, it is understood to seizure… | ||
| 11-page130 | Modifications to a Wraith gearbox to make it suitable for use on a Bentley lll. | ||
| View original record | c. Rm. 628 DA.11/G.9.11.38. FJH GRY WRAITH GEAR BOX ON BENTLEY lll. RAH Herewith is PD.301 shewing the arrangement of overdrive ratios, so as to make the Wraith gear box suitable for use on Bentley… | ||
| 11-page131 | Modification to the Speedometer Drive for the Wraith model to improve lubrication. | ||
| View original record | 628 To By..... from Mx. CORY c. Rm. c. RHC. c. LA. FJH Mx.23/N.9.11.38. Speedometer Drive - Wraith. H.H. The modification to ensure positive lubrication of bearings by drilling a .0468 diameter hole… | ||
| 11-page132 | Failure of a Wraith first motion shaft and the fitting of replacement parts. | ||
| View original record | 628 also 200a To HPS. from Rm/Gry. Rm/Gry.2/MH.18.11.38. FAILURE OF WRAITH FIRST MOTION SHAFT. 5.B.IV is now in the Fitting Shop for a new production Wraith gearbox to be fitted. We are letting you… | ||
| 11-page133 | Wraith gearbox failure at 35,000 miles and the proposed design modification. | ||
| View original record | To Hy..from Rm/Ory. c. Sg. c. Hs. c. Da. c. RHC. c. Hdy. WRAITH GEARBOX. In order to run the most possible miles on a Wraith gearbox we used the box that did the first 7,000 miles run in France for… | ||
| 11-page134 | Trial of a new, cost-reduced change gear shaft for the Wraith model. | ||
| View original record | Rm. [redacted] 628 BY/NS.2/G.19.11.38. F.J.H. See me. RMJ WRAITH. CHANGE GEAR MECHANISM. Under cover of memo BY/NS.8/G.24.8.38. we asked HPS. to produce a change gear shaft similar to GW.1794 but in… | ||
| 11-page135 | Production change for the Wraith change gear mechanism, specifically the GW.1794 gear lever shaft. | ||
| View original record | COPY. G. Dept. c. RHC. c. HPS. BY/NS.8/G.24.8.38. WRAITH. CHANGE GEAR MECHANISM. GW.1794 SHAFT - GEAR LEVER. This piece is at present produced in S/ZN.2072 and has the 1.200 diameter sphere and .3995… | ||
| 11-page136 | Responding to a query about the durability of a Wraith change gear shaft. | ||
| View original record | 628 By/NS. from Rm/FJH. c. HPS. Rm/FJH.23.11.38. WRAITH CHANGE GEAR MECHANISM. Re your memo By/NS.2/G.19.11.38., as the change gear shaft in S/N has only completed 983 miles, we are quite unable to… | ||
| 11-page137 | Standardisation of the Wraith Gear Box 1st Motion Shaft. | ||
| View original record | FJH not for use unless seen mbg 6281 c. Rm. DA.8/G.25.11.38. WRAITH GEAR BOX - 1st. MOTION SHAFT. Herewith is PD.311, shewing the straightened form of 1st. Motion Shaft intended to be standardised,… | ||
| 11-page138 | Notification regarding the re-issue of a temporarily strengthened 1st motion shaft for the Wraith gearbox. | ||
| View original record | BI/NS. (struck through) c. Rm. 628 DA.10/G.25.11.38. WRAITH GEAR BOX. 1ST. MOTION SHAFT. Herewith is PD.310 Temporary Strengthened Shaft, which is now re-issued because of an undercut added to the end… | ||
| 11-page139 | To cancel work on gearbox and motion shaft components for the 25/30-HP chassis. | ||
| View original record | To. RHC. c. RHC/Mr. Pritchard. c. RHC/Mr. Turner. c. LA. c. BY/NS. c. C/Rb. c. Roy/Ms. c. RHC/JMW. c. Rm/Gry. BY/CRL.4/E.26.11.38. 628 25/30-HP. CHASSIS. GEAR BOX & ACTUATING GEAR. SECTION 6030. 1st.… | ||
| 11-page140 | 'B' series replacement parts and blueprints for the 25/30-HP chassis gearbox. | ||
| View original record | 628 To. RHC. c. RHC/Mr. Pritchard. c. RHC/Mr. Turner. c. LA. c. BY/NS. c. O/Rb. c. Roy/Ms. c. RHC/JMW. c. Rm/Gry. track 25/30-HP. CHASSIS. "B" SERIES REPLACEMENTS. GEAR BOX & ACTUATING GEAR. SECTION… | ||
| 11-page141 | Modification to the Constant Mesh Wheel for the 'B' Series Chassis. | ||
| View original record | (Cont'd). -2- BY/CRL.1/E.29.11.38. The diameter of the recess on the Constant Mesh Wheel has been reduced from 3.225 to 3.125, this means a slight modification to the Dies, but Mr. Kitching informs us… | ||
| 11-page142 | Instructions and queries for durability testing on a Wraith Dyno gearbox. | ||
| View original record | 628 To Rm/FJH. from Rm/Gry. c. Rm. c. Rm/Wym. (text has been struck through) Rm/Gry.2/MH.5.12.38. WRAITH DYNO GEARBOX. (1) How much longer will 45° helix stronger 1st. motion shaft continue running.… | ||
| 11-page143 | The rebuild of a 25.G.VI gearbox with a new main shaft and bearings. | ||
| View original record | 628 To HPS. from Rm/FJH. c. Rm/Wym. Rm/FJH.1/MH.6.12.38. 25.G.VI GEARBOX. The above gearbox is at present removed from the car and in the shop for examination of the 1st. M. shaft. Will you please… | ||
| 11-page144 | The order of replacement parts for the 25/30 HP chassis. | ||
| View original record | 628 To Hoy. (2 copies). c. RRC. c. RHC/Hd. (O.P.Dept.). c. RHC/CL (1 copies). c. C/Eb. c. BA/Ekn. c. Hd. c. G/Rts c. S/Mt. c. Rm/Grys. c. RHC/Mr. Turner. FJH BY/CRL.7/B.6.12.38. 25/30 HP. CHASSIS.… | ||
| 11-page145 | Parts list for a constant mesh wheel, propeller shaft, and driving flange, with an instruction to issue a tracing. | ||
| View original record | -2- BY/CRL.7/B.6.12.38. Sec.6050. GW. 2206. Constant Mesh Wheel. 1 off. Sec.6110. GW. 2189. Propeller Shaft. 1 off. D.54141. Bolt - Coupling Flanges. 8 off. K.4319. .4375 Dia; Lock Nut. 8 off. K.4311.… | ||
| 11-page146 | Suggested changes and test results for the Wraith 'C' Series Gear Box. | ||
| View original record | [strikethrough]c. Rm.[/strikethrough] [strikethrough]c. Da/hdy.[/strikethrough] Handwritten: 628. WRAITH - 'C' SERIES GEAR BOX. Handwritten Signature: AHH The following is what is suggested for 'C'… | ||
| 11-page147 | Dynamometer test results for the Wraith gearbox, detailing failures and endurance of shafts and bearings. | ||
| View original record | 628 To By. c. to Da. c. to Da/Hdy. Rm/PJH.1/JH.12.12.38. WRAITH GEARBOX. We give below the results to date of dynamometer testing on the Wraith gearbox following the failure of a 1st. motion shaft on… | ||
| 11-page148 | Gearbox component failures, with recommendations for strengthening parts and further testing of a new helix design. | ||
| View original record | -2- Rm/FJH.1/JH.12.12.38. 3rd. Speed Floating Bush & Washers. Bush Cracked slightly 84 1/2 hrs. Flange of same bush broken off and loose washer broken. 94 1/2 hrs. 2nd. Motion shaft rear bearings.… | ||
| 11-page149 | Wraith gearbox lubrication tests and suggestions for improvement. | ||
| View original record | 628 GRY Some design assistance for you Rm To BY. From RHC/G.Mc. C. Rm. WRAITH GEARBOX. Although the oiling system should give good results for hard road use, the tests now being carried out on the… | ||
| 11-page150 | Instructions for producing oversize taper pins for gearboxes on 25/30-HP chassis. | ||
| View original record | 628 To:- Roy. (2 copies). c. RHC. c. RHC/wld. (O.T. Dept). c. RHC/Cls. (4 copies):- c. C/S. c. LA/Skn. c. Hd. c. C/Rts. c. C/Mt. c. Kn/Grys. c. RHC/Mr. Turner. c. RHC/SS. BY/CRL.2/E.13.12.38.… | ||
| 11-page151 | Instruction to release the 3rd Motion Shaft with increased collar for the Wraith 'C' Series Gearbox. | ||
| View original record | 628 FJH BY/CRL. c. Da. c. Rm. GRY HH BY/11/N.14.12.38. Wraith - 'C' Series Gearbox. Will you please instruct for 'C' series the 3rd. Motion Shaft with increased collar to PD.328. This releases the… | ||
| 11-page152 | List of modifications for the Wraith III gearbox to overcome faults discovered during testing. | ||
| View original record | PY/HS. c. Rm. 628 DA.12/G.14.12.38. WRAITH 111 - GEARBOX. GRY Herewith is PD.328 which shews the remaining modifications to the Wraith Gear Box to overcome faults so far discovered in testing :- (1).… | ||
| 11-page153 | Blueprints for the actuation of overdrive gears in the Wraith gearbox when fitted to a Bentley V chassis. | ||
| View original record | 628 C. Rm. DA.9/G.14.1.39. FJH WRAITH GEAR WITH OVERDRIVE. Please receive herewith blueprints of FD.353 shewing the actuation for the overdrive gears in the Wraith gear box when fitted into the… | ||
| 11-page154 | Dynamometer test report on a Wraith gearbox, detailing component failures at different running times and speeds. | ||
| View original record | 628 To By. From Rm/Gry. c. DA. c. Da/Hdy. c. RHC. c. HS. WRAITH GEARBOX. We have now completed our dynamometer running on this gearbox. The total running time is 149 1/2 hours. During this time there… | ||
| 11-page155 | Wraith gearbox 'chunking' issues and experiments with Schatz bearings. | ||
| View original record | 628 TO Dy. c. to Hs. c. to Da. c. to Hdy. c. to 'S'. Rm/Gry.6/JH.16.2.39. WRAITH GEARBOX. L.A. is having great difficulty in getting gearboxes tolerably free from 'chunking'. Because of an experiment… | ||
| 11-page156 | Identifying replacement part numbers for specific bearings. | ||
| View original record | -2- Rm/Gry.6/JH.16.2.39. The bearings in question are R. & M. DMJT40JO and DMJT1JO replacing OM.768/9. Rm/Gry. | ||
| 11-page157 | The rejection of Wraith gearboxes due to 'Clonking' caused by end float in ball bearings and recommending an improved bearing type. | ||
| View original record | 628 To BY. & Rm. From RHC. c. Hs. c. LA. RHC.3/FH.18.2.39. BALL BEARINGS - WRAITH GEARBOX. The Test Department are rejecting a considerable number of Wraith Gearboxes which are undergoing 1st. Motion… | ||
| 11-page158 | Ball bearing issues, production difficulties, and mileage testing for the Wraith gearbox. | ||
| View original record | 628 To RHC. from Rm/ c. By. c. Hs. c. LA. Rm./MH.20.2.39. BALL BEARINGS - WRAITH GEARBOX. With reference to RHC.3/FH.18.2.39, this subject has already been dealt with in Rm/Gry.o/JH.16.2.39. Whilst we… | ||
| 11-page159 | Use of Schatz versus Hoffman ball bearings to solve a 'clonking' issue in the Wraith gearbox. | ||
| View original record | c RHO c Rm c EY c Hc. 628 LA4/T21.2.39 BALL BEARINGS - WRAITH GEARBOX With reference to Rm's memo Rm3/MH20.2.39. We quite agree with Rm. that it would be unwise to fit to gear boxes pieces which have… | ||
| 11-page160 | Trial and procurement of gearbox bearings with reduced clearance for motion shafts. | ||
| View original record | 628? BY/CRL. [struck through] c. Rm. c. RHC. [struck through] c. LA. [struck through] BY.3/N.28.2.39. Bearings for 1st. & 3rd. Motion Shafts. LA. has tried a gearbox fitted with bearings having… | ||
| 11-page161 | Requesting an order for 30 additional sets of gearbox bearings for the Wraith model. | ||
| View original record | 628 BY. & Rm. LR. Roy/Dn. RHC/SB.4/FH.7.3.39. GEARBOX BEARINGS - WRAITH. With reference to memo' Roy/Dn7/ME.3.3.39. will you please arrange to order a further 30 sets of Bearings GW. 788/9 with… | ||
| 11-page162 | Complaints of gear change mechanism failures on the Wraith model, proposing a new torque reaction control. | ||
| View original record | 628 To By. from Rm/Gry. c.c. Da. from By Rm/Gry.10/MH.13.4.39. WRAITH GEARBOX. There have already been three complaints of failure of the gear change mechanism on Wraith due to excessive engine… | ||
| 11-page163 | Instruction to add notes to the drawing for the Wraith III 2nd motion shaft, GW.1884. | ||
| View original record | 628. BY/ORN. c. Rm/Gry. c. RWS/RR (Inspection) BY/NS.20/G.28.4.39. WRAITH III. GW.1884 - 2ND. MOTION SHAFT. Please add the following note to the tracing GW.1884 :- "Face of all keys to be in line, and… | ||
| 11-page164 | Letter from 'The Motor' magazine requesting artist facilities to draw the 'Wraith' model gearbox for a technical review. | ||
| View original record | 628 The Motor PROPRIETORS: TEMPLE PRESS LIMITED. MANAGING DIRECTOR: ROLAND E. DANGERFIELD. DIRECTOR AND GENERAL MANAGER: ROBERT ASHWORTH. LONDON: 5-17 ROSEBERY AVENUE E.C.1. TELEPHONE TERMINUS 3636… | ||
| 11-page165 | Letter to 'The Motor' magazine offering facilities for an artist to draw the Wraith synchromesh gearbox. | ||
| View original record | 628. RmS/R. 29th April, 1939. L. Pomeroy, Esq., Technical Editor, "The Motor", 5/17, Rosebery Avenue, LONDON. E.C.1. Dear Pomeroy, We should be only too pleased to afford your Artist any facilities he… | ||
| 11-page166 | Letter from 'The Motor' magazine arranging for their artist, Mr. Lord, to visit the works. | ||
| View original record | The Motor PROPRIETORS: TEMPLE PRESS LIMITED. MANAGING DIRECTOR: ROLAND E. DANGERFIELD. DIRECTOR AND GENERAL MANAGER: ROBERT ASHWORTH. LONDON: 5-17 ROSEBERY AVENUE E.C.I. TELEPHONE TERMINUS 3636… | ||
| 11-page167 | Ball race thrust tests for the Wraith Gear Box 1st Motion Shaft Bearings. | ||
| View original record | 628 To Rm. from HPS/Bl. c. to Rm/Gry. c. to Da. c. to Hdy. c. to Ey. HPS/Bl.1/CB.24.5.39. BALL RACE THRUST TESTS. With particular reference to Wraith Gear Box 1st Motion Shaft Bearings. In connection… | ||
| 11-page168 | Thrust tests on a Hoffmann Ball Race No. 325 with a No. R325 as a secondary bearing under a 500 LBS static load. | ||
| View original record | BALL RACE THRUST TESTS HOFFMANN BALL RACE N° 325 ooo WITH " " N° R325 ooo AS SECONDARY BEARING. THRUST APPLIED AND READINGS TAKEN HORIZONTALLY. STATIC LOAD 500 LBS. N°325 N°R325 CLOCK THRUST STATIC… | ||
| 11-page169 | Graph showing the results of thrust tests on Hoffmann ball race bearings. | ||
| View original record | BALL RACE THRUST TESTS HOFFMANN BALL RACE Nº 325 000 WITH " " " Nº R325 000 AS SECONDARY BEARING. THRUST APPLIED AND READINGS TAKEN HORIZONTALLY. STATIC LOAD NIL. THRUST - INS - THRUST LOAD - LBS -… | ||
| 11-page170 | Graph of thrust tests on Hoffmann ball race bearings. | ||
| View original record | BALL RACE THRUST TESTS HOFFMANN BALL RACE Nº 325 000 WITH " " " Nº R325 000 AS SECONDARY BEARING THRUST APPLIED AND READINGS TAKEN HORIZONTALLY STATIC LOAD 500 LBS. +.001 THRUST - INS - THRUST LOAD -… | ||