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).
Proposed standardization of chassis parts to use ground straight pitch gears for the constant mesh pinion and gear.
| Identifier | ExFiles\Box 81\2\ scan0120 | |
| Date | 22th February 1924 | |
| R.R.A.160-1 16M-2-1-23 45625 ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. PROPOSED STANDARDIZATION OF CHASSIS PARTS Alteration No. 4252/A Date February 22, 1924. To Mr. Belnap The following is proposed: No. 50 PIECE NOS. AFFECTED: A-2850, 2851 SECTION NO.: 6040, 6058 NAME OF PARTS: Const. Mesh Pinion, Const. Mesh Gear DESCRIPTION of Alteration: To use ground straight pitch gears of 7s pitch 20° angle, full depth, 26T and 44T. PURPOSE of Alteration: To obtain more silent side-shaft gears, more silent speeds (in conjunction with other ground gears), and eliminate all use of abrasive on any gears. Signatures implying agreement with the alteration: NAME, INITIALS, DATE Mr. Olley, OY, 11/16/23 Mr. Nadin, Na{Mr Nadin}, " Mr. Bagnall, Ba Mr. Hulley, WHH Mr. Southern, JS{Mr Johnson's Secretary} Mr. Caswell, EHC Mr. Ross, ACR Mr. Beaver, HCB Mr. Belnap Mr. Harkness, THH Mr. Royce Mr. Johnson [Stamped Text] We propose to continue in manufacture unless we hear from Mr.J. and Mr.R. to the contrary. [Typed text below stamped text] unless we hear from Mr. Johnson and Mr. Royce to the contrary. Tested: 40 sets Estimated cost: Saves at least 50% fitting time over helical un-ground gears. Proposed Chassis at which alteration should start: 801 on Cost of parts scrapped, if any: none. Increase in weight, if any: none. | ||