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).
Comparative data table of stiffness, inertia, and dimensional properties for various engines.
| Identifier | ExFiles\Box 6\1\ 01-page044 | |
| Date | 22th April 1927 guessed | |
| A.{Mr Adams} B. C. D.{John DeLooze - Company Secretary} E.{Mr Elliott - Chief Engineer} F.{Mr Friese} G.{Mr Griffiths - Chief Accountant / Mr Gnapp} H.{Arthur M. Hanbury - Head Complaints} I. J.{Mr Johnson W.M.} K.{Mr Kilner} G-1 14,750 31.650" .03395 .794" 1.995" 1.250" 1.33 2.93% .0153 38,300 G-11 16,220 30.975" .0419 .8084" 1.995" 1.250" 1.33 3.15% .01795 41,600 Phantom. 43,500 40.600" .147 1.107" 2.6245" 1.50" 4.165 3.52% .0356 147,000 Lorraine. 28,350 24.295" .0575 .875" 1.890" .80" 1.211 4.75% .0320 57,500 Column. Heading. A.{Mr Adams} Engine. B. Stiffness : lbs/ft/radian. C. length : ins. D.{John DeLooze - Company Secretary} Polar M.{Mr Moon / Mr Moore} of I. calc. from B : ins4 E.{Mr Elliott - Chief Engineer} Min. of plain shaft having same stiffness : ins. F.{Mr Friese} Dia. of journal : ins. G.{Mr Griffiths - Chief Accountant / Mr Gnapp} Bore of journals : ins. H.{Arthur M. Hanbury - Head Complaints} Polar M.{Mr Moon / Mr Moore} of I. of journals - ins4 I. D.{John DeLooze - Company Secretary} expressed as %age of H.{Arthur M. Hanbury - Head Complaints} J.{Mr Johnson W.M.} Distributed inertia per ft. Slugs/ft2. K.{Mr Kilner} Stiffness per ft. lbs/ft/radian. Ha/Ten. V/5010 | ||