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).
Proposal to strengthen the gearbox's 3rd motion shaft following a failure, detailing modifications.
| Identifier | ExFiles\Box 179b\1\ img135 | |
| Date | 2nd November 1932 | |
| P/ FROM HDY{William Hardy} C. to SG.{Arthur F. Sidgreaves - MD} WGE. HS.{Lord Ernest Hives - Chair} E-B HDY{William Hardy}1/W2.11.32. 5573 V 7310. 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}/GKY12/KT311032, we think that new shafts should be strengthened by the modifications shown on R.{Sir Henry Royce} sch. 3557. herewith, the principal feature of which is increased size of spline. With the increase of shaft we show the stress is reduced 26%. HDY.{William Hardy} Similar to P.R.S.ch.216 WDF 9-11-32. | ||