From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Standardisation of Schatz bearings for gearbox 1st and 3rd motion shafts.
| Identifier | ExFiles\Box 171\5\ img086 | |
| Date | 17th February 1939 | |
| RR 755A (10H) (49868) 19/10/37 C.E.Co. COMPLETED 8.7.39. 25/50HP.x STANDARDISATION OF PARTS Date Issued: 17.2.39. Sheet No.: W.28. Drg. No.: L.O.P.S. Description: SCHATZ BEARINGS FOR GEARBOX 1st. AND 3rd. MOTION SHAFTS. Purpose: To reduce "chunking". Brief Report and Remarks: Satisfactory on dyno. test and light running rig test. Fitted to 25.G.VI. 27.G.VI. and Sg{Arthur F. Sidgreaves - MD}'s. car. Other tests, see report. Will have done 20,000 miles running before cars reach customers. In view of our recent gearbox troubles, we consider that this mod. should complete at least 15,000 miles on one car before it is brought on production. Rm.{William Robotham - Chief Engineer} When recommended for Introduction: "C" Report References: Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls}6/JH.16.2.39. By: Rm.{William Robotham - Chief Engineer} Da.{Bernard Day - Chassis Design} Mx.{John H Maddocks - Chief Proving Officer} Cost Table: Old Parts: Material £. s. d.{John DeLooze - Company Secretary} 9 3, Labour £. s. d.{John DeLooze - Company Secretary} B.Q., Total £. s. d.{John DeLooze - Company Secretary} 9. 3 New Parts: Material £. s. d.{John DeLooze - Company Secretary} 18 9, Total £. s. d.{John DeLooze - Company Secretary} 18 9 Increase in Cost: £0.9.6. G/Rb.{R. Bowen} 3.3.39. Cost of Tools & £10-0-0d. Production Position and Comments: Schatz Bearings for gearbox 1st. and 3rd. motion shafts, to prevent 'chunking' can be introduced at the 1st. chassis in 'D' series without scrap. No tool cost is involved but there is an increase in Factory cost of 9/6d. per chassis. It is intended that normal deep groove type bearings with reduced end clearance be used on 'C' series, but it is considered that further and more permanent improvement would be obtained by the use of Schatz bearings. RHC{R. H. Coverley - Production Engineer}/J.M.Reid. Authorisation to Proceed: To full works Introduce on the __________ Chassis in __________ Series. Sg.{Arthur F. Sidgreaves - MD} Signature: [Illegible Signature], Date: 6/6/39 Hs.{Lord Ernest Hives - Chair} Signature: [Illegible Signature], Date: 4/7/39 | ||