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).
Rough drawing and experiment for torsionally free pinions on a 4-speed gearbox for India.
| Identifier | ExFiles\Box 6\4\ 04-page075 | |
| Date | 21th February 1925 | |
| To W. from AJS. c. to C.I. c. to HY.{Tom Haldenby - Plant Engineer} c. to HS.{Lord Ernest Hives - Chair} c. to HOY. c. to RMC. Y5310 AJS1/DB.{Donald Bastow - Suspensions}21.2.25. SECRET. INDIA - 4 SPEED GEAR BOX. We attach to R's copy of this memo a print of a rough drawing, which is our interpretation of your telegram for torsionally free pinions on the reverse. In order to get this job instructed quickly (the experimental department had it in hand 2 1/2 hours after sight of your telegram), we found a broach which seemed fairly suitable, and which has determined to some extent the size of the splines, of which there are 10 in number. We expect to have this experiment on test by midday tomorrow (Sunday). We anticipate this scheme will get over all our troubles, and hope so, particularly in view of the fact that it will save considerable time in assembling, the parts are less expensive to make and one cover can be eliminated from the box with this. AJS. | ||