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).
Cost comparison memo regarding the 25/30 HP and Wraith III engine suspensions.
| Identifier | ExFiles\Box 148\5\ scan0309 | |
| Date | 14th March 1938 | |
| To Rm{William Robotham - Chief Engineer}/Mr. Whyman from G/Rb.{R. Bowen} 1260. G/Rb.{R. Bowen}12/K/71/R.14.3.38 25/30 HP. & Wraith III Engine Suspension SECS.5000/5001/7000 At the request of Mr. Whyman we have broadly considered the difference in cost of the 25/30 HP and Wraith Engine Suspension. We have compared the 25/30HP Front Engine Suspension, Gear box support cross member and Torque reaction dampers as against the Wraith type front and rear engine suspension and Torque reaction dampers and estimate the latter shows a saving in factory cost of over £2. G/Rb.{R. Bowen} | ||