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).
Strengthening the gearbox 3rd motion shaft after a failure.
| Identifier | ExFiles\Box 15\5\ Scan349 | |
| Date | 2nd November 1932 | |
| X7310 BY.{R.W. Bailey - Chief Engineer} FROM HDY.{William Hardy} HDY{William Hardy}1/M2.11.32. C. to SG.{Arthur F. Sidgreaves - MD} WOR.{Arthur Wormald - General Works Manager} HS.{Lord Ernest Hives - Chair} E.{Mr Elliott - Chief Engineer} DA.{Bernard Day - Chassis Design} P.2. GEARBOX, STRENGTHENED 3rd. MOTION SHAFT. With regard to the failure of the 3rd. motion shaft on 19-EX. after 23,000 miles, in addition to the increased radius suggested in HS{Lord Ernest Hives - Chair}/GRY{Shadwell Grylls}12/KT311032., we think that new shafts should be strengthened by the modifications shewn on N. scn. 3557. herewith, the principle feature of which is increased size of spline. With the increase of shaft we shew the stress is reduced 26%. HDY.{William Hardy} | ||