Rolls-Royce Archives
         « Prev  Box Series  Next »        

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 a turned finish of crankshaft webs in place of a ground finish.

Identifier  ExFiles\Box 171\5\  img051
Date  12th May 1938
  
RR 788B (10H) (49968) 19/10/37 C.E.Co.
COMPLETED 22.9.38.
BENTLEY STANDARDISATION OF PARTS
Date Issued 12.5.38
Sheet No. B.12.
Drg. No. EB.3376.
L.O.P.S.
Description: TURNED FINISH OF CRANKSHAFT WEBS IN PLACE OF GROUND FINISH.
Purpose: Reduction in production cost.
Brief Report and Remarks: Crankshaft with turned finish webs satisfactory after 40 hr. endurance under severe conditions.
When recommended for Introduction:
Report References:
By: BY.{R.W. Bailey - Chief Engineer}
Rm{William Robotham - Chief Engineer}: RM.{William Robotham - Chief Engineer}
Da{Bernard Day - Chassis Design}: DA.{Bernard Day - Chassis Design}
Mx{John H Maddocks - Chief Proving Officer}: MX.{John H Maddocks - Chief Proving Officer}
Production Position and Comments:
Old Parts: Material -, Labour £0.1.0., Burden £0.1.9., Total £0.2.9.
New Parts: Material -, Labour -, Burden -, Total -.
Decrease in Cost: £ 0.2.9. G/R/H 30/9/38
Cost of Tools & NIL.
Turned finish on faces of crankshaft webs instead of former ground finish provides a saving of 2/9d. per chassis, due to deletion of grinding operations and involves no tool cost.
All crankshafts from approximately the 46th chassis in 'M' series will be machined in this manner.
RHC.{R. H. Coverley - Production Engineer}
Authorisation to Proceed.
Introduce on the 46 Chassis in M Series.
Sg.{Arthur F. Sidgreaves - MD} Signature Date 20/9/38
Hs.{Lord Ernest Hives - Chair} Signature Date 20/9/38
  
  


Copyright Sustain 2025, All Rights Reserved.    whatever is rightly done, however humble, is noble
An unhandled error has occurred. Reload 🗙