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).
Modifications to the Maybach jaws on an epicyclic 3rd speed gearbox following experience driving the 14-EX.
| Identifier | ExFiles\Box 128\2\ scan0056 | |
| Date | 3rd March 1931 | |
| R.{Sir Henry Royce} FROM DA{Bernard Day - Chassis Design} X2200 DA{Bernard Day - Chassis Design}4/M3. 3. 31. C. to SG.{Arthur F. Sidgreaves - MD} WOR.{Arthur Wormald - General Works Manager} P. 2. EPICYCLIC 3rd X.7310. C. to HS.{Lord Ernest Hives - Chair} BY.{R.W. Bailey - Chief Engineer} HY.{Tom Haldenby - Plant Engineer} SPEED GEARBOX. X.2200. After our experience in driving 14-EX. with the experimental Maybach dogs we think it will be necessary to modify to some extent the Maybach jaws on the epicyclic 3rd. speed box. The angle as instructed is 7º and 6º respectively on the vacuum and hand controlled dogs. Clicking seems certain to occur. We send herewith a print of N. sch. 3230. shewing the suggested modifications which we have sent to Derby, as the box is being built up rapidly. DA.{Bernard Day - Chassis Design} | ||