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).
Requesting the ordering of crank forgings and rear axle gears made from Nitralloy steel.
| Identifier | ExFiles\Box 154a\1\ scan0148 | |
| Date | 21th March 1929 | |
| ROY.{Sir Henry Royce} e.{Mr Elliott - Chief Engineer} MAC.{Mr Macintosh} c. HS.{Lord Ernest Hives - Chair} X4469 BY1/G.21.3.29. NITRALLOY STEEL. ----------------- Please note that we require two India 4 crank forgings in nitralloy steel, and two SS.{S. Smith} Will you kindly instruct Messrs. Firth-Derihons to produce the steel and hand same on to Vickers to be forged in our dies under a similar arrangement to that carried out on the 'F' type crankshaft. In addition we should order two sets of rear axle gears for the SS.{S. Smith}, also for the 20 HP. BY.{R.W. Bailey - Chief Engineer} | ||